OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [bfd/] [sunos.c] - Blame information for rev 842

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 227 jeremybenn
/* BFD backend for SunOS binaries.
2
   Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3
   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4
   Free Software Foundation, Inc.
5
   Written by Cygnus Support.
6
 
7
   This file is part of BFD, the Binary File Descriptor library.
8
 
9
   This program is free software; you can redistribute it and/or modify
10
   it under the terms of the GNU General Public License as published by
11
   the Free Software Foundation; either version 3 of the License, or
12
   (at your option) any later version.
13
 
14
   This program is distributed in the hope that it will be useful,
15
   but WITHOUT ANY WARRANTY; without even the implied warranty of
16
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
   GNU General Public License for more details.
18
 
19
   You should have received a copy of the GNU General Public License
20
   along with this program; if not, write to the Free Software
21
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22
   MA 02110-1301, USA.  */
23
 
24
#define TARGETNAME "a.out-sunos-big"
25
 
26
/* Do not "beautify" the CONCAT* macro args.  Traditional C will not
27
   remove whitespace added here, and thus will fail to concatenate
28
   the tokens.  */
29
#define MY(OP) CONCAT2 (sunos_big_,OP)
30
 
31
#include "bfd.h"
32
#include "bfdlink.h"
33
#include "libaout.h"
34
 
35
/* ??? Where should this go?  */
36
#define MACHTYPE_OK(mtype) \
37
  (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \
38
   || ((mtype) == M_SPARCLET \
39
       && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \
40
   || ((mtype) == M_SPARCLITE_LE \
41
       && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \
42
   || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \
43
       && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL))
44
 
45
#define MY_get_dynamic_symtab_upper_bound  sunos_get_dynamic_symtab_upper_bound
46
#define MY_canonicalize_dynamic_symtab     sunos_canonicalize_dynamic_symtab
47
#define MY_get_synthetic_symtab            _bfd_nodynamic_get_synthetic_symtab
48
#define MY_get_dynamic_reloc_upper_bound   sunos_get_dynamic_reloc_upper_bound
49
#define MY_canonicalize_dynamic_reloc      sunos_canonicalize_dynamic_reloc
50
#define MY_bfd_link_hash_table_create      sunos_link_hash_table_create
51
#define MY_add_dynamic_symbols             sunos_add_dynamic_symbols
52
#define MY_add_one_symbol                  sunos_add_one_symbol
53
#define MY_link_dynamic_object             sunos_link_dynamic_object
54
#define MY_write_dynamic_symbol            sunos_write_dynamic_symbol
55
#define MY_check_dynamic_reloc             sunos_check_dynamic_reloc
56
#define MY_finish_dynamic_link             sunos_finish_dynamic_link
57
 
58
static bfd_boolean sunos_add_dynamic_symbols            (bfd *, struct bfd_link_info *, struct external_nlist **, bfd_size_type *, char **);
59
static 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 **);
60
static bfd_boolean sunos_link_dynamic_object            (struct bfd_link_info *, bfd *);
61
static bfd_boolean sunos_write_dynamic_symbol           (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
62
static bfd_boolean sunos_check_dynamic_reloc            (struct bfd_link_info *, bfd *, asection *, struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, bfd_vma *);
63
static bfd_boolean sunos_finish_dynamic_link            (bfd *, struct bfd_link_info *);
64
static struct bfd_link_hash_table *sunos_link_hash_table_create  (bfd *);
65
static long        sunos_get_dynamic_symtab_upper_bound (bfd *);
66
static long        sunos_canonicalize_dynamic_symtab    (bfd *, asymbol **);
67
static long        sunos_get_dynamic_reloc_upper_bound  (bfd *);
68
static long        sunos_canonicalize_dynamic_reloc     (bfd *, arelent **, asymbol **);
69
 
70
/* Include the usual a.out support.  */
71
#include "aoutf1.h"
72
 
73
/* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro.  */
74
#undef valid
75
 
76
/* SunOS shared library support.  We store a pointer to this structure
77
   in obj_aout_dynamic_info (abfd).  */
78
 
79
struct sunos_dynamic_info
80
{
81
  /* Whether we found any dynamic information.  */
82
  bfd_boolean valid;
83
  /* Dynamic information.  */
84
  struct internal_sun4_dynamic_link dyninfo;
85
  /* Number of dynamic symbols.  */
86
  unsigned long dynsym_count;
87
  /* Read in nlists for dynamic symbols.  */
88
  struct external_nlist *dynsym;
89
  /* asymbol structures for dynamic symbols.  */
90
  aout_symbol_type *canonical_dynsym;
91
  /* Read in dynamic string table.  */
92
  char *dynstr;
93
  /* Number of dynamic relocs.  */
94
  unsigned long dynrel_count;
95
  /* Read in dynamic relocs.  This may be reloc_std_external or
96
     reloc_ext_external.  */
97
  void * dynrel;
98
  /* arelent structures for dynamic relocs.  */
99
  arelent *canonical_dynrel;
100
};
101
 
102
/* The hash table of dynamic symbols is composed of two word entries.
103
   See include/aout/sun4.h for details.  */
104
 
105
#define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD)
106
 
107
/* Read in the basic dynamic information.  This locates the __DYNAMIC
108
   structure and uses it to find the dynamic_link structure.  It
109
   creates and saves a sunos_dynamic_info structure.  If it can't find
110
   __DYNAMIC, it sets the valid field of the sunos_dynamic_info
111
   structure to FALSE to avoid doing this work again.  */
112
 
113
static bfd_boolean
114
sunos_read_dynamic_info (bfd *abfd)
115
{
116
  struct sunos_dynamic_info *info;
117
  asection *dynsec;
118
  bfd_vma dynoff;
119
  struct external_sun4_dynamic dyninfo;
120
  unsigned long dynver;
121
  struct external_sun4_dynamic_link linkinfo;
122
  bfd_size_type amt;
123
 
124
  if (obj_aout_dynamic_info (abfd) != NULL)
125
    return TRUE;
126
 
127
  if ((abfd->flags & DYNAMIC) == 0)
128
    {
129
      bfd_set_error (bfd_error_invalid_operation);
130
      return FALSE;
131
    }
132
 
133
  amt = sizeof (struct sunos_dynamic_info);
134
  info = bfd_zalloc (abfd, amt);
135
  if (!info)
136
    return FALSE;
137
  info->valid = FALSE;
138
  info->dynsym = NULL;
139
  info->dynstr = NULL;
140
  info->canonical_dynsym = NULL;
141
  info->dynrel = NULL;
142
  info->canonical_dynrel = NULL;
143
  obj_aout_dynamic_info (abfd) = (void *) info;
144
 
145
  /* This code used to look for the __DYNAMIC symbol to locate the dynamic
146
     linking information.
147
     However this inhibits recovering the dynamic symbols from a
148
     stripped object file, so blindly assume that the dynamic linking
149
     information is located at the start of the data section.
150
     We could verify this assumption later by looking through the dynamic
151
     symbols for the __DYNAMIC symbol.  */
152
  if ((abfd->flags & DYNAMIC) == 0)
153
    return TRUE;
154
  if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (void *) &dyninfo,
155
                                  (file_ptr) 0,
156
                                  (bfd_size_type) sizeof dyninfo))
157
    return TRUE;
158
 
159
  dynver = GET_WORD (abfd, dyninfo.ld_version);
160
  if (dynver != 2 && dynver != 3)
161
    return TRUE;
162
 
163
  dynoff = GET_WORD (abfd, dyninfo.ld);
164
 
165
  /* dynoff is a virtual address.  It is probably always in the .data
166
     section, but this code should work even if it moves.  */
167
  if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd)))
168
    dynsec = obj_textsec (abfd);
169
  else
170
    dynsec = obj_datasec (abfd);
171
  dynoff -= bfd_get_section_vma (abfd, dynsec);
172
  if (dynoff > dynsec->size)
173
    return TRUE;
174
 
175
  /* This executable appears to be dynamically linked in a way that we
176
     can understand.  */
177
  if (! bfd_get_section_contents (abfd, dynsec, (void *) &linkinfo,
178
                                  (file_ptr) dynoff,
179
                                  (bfd_size_type) sizeof linkinfo))
180
    return TRUE;
181
 
182
  /* Swap in the dynamic link information.  */
183
  info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded);
184
  info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need);
185
  info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules);
186
  info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got);
187
  info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt);
188
  info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel);
189
  info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash);
190
  info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab);
191
  info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash);
192
  info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets);
193
  info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols);
194
  info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size);
195
  info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text);
196
  info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz);
197
 
198
  /* Reportedly the addresses need to be offset by the size of the
199
     exec header in an NMAGIC file.  */
200
  if (adata (abfd).magic == n_magic)
201
    {
202
      unsigned long exec_bytes_size = adata (abfd).exec_bytes_size;
203
 
204
      info->dyninfo.ld_need += exec_bytes_size;
205
      info->dyninfo.ld_rules += exec_bytes_size;
206
      info->dyninfo.ld_rel += exec_bytes_size;
207
      info->dyninfo.ld_hash += exec_bytes_size;
208
      info->dyninfo.ld_stab += exec_bytes_size;
209
      info->dyninfo.ld_symbols += exec_bytes_size;
210
    }
211
 
212
  /* The only way to get the size of the symbol information appears to
213
     be to determine the distance between it and the string table.  */
214
  info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab)
215
                        / EXTERNAL_NLIST_SIZE);
216
  BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE
217
              == (unsigned long) (info->dyninfo.ld_symbols
218
                                  - info->dyninfo.ld_stab));
219
 
220
  /* Similarly, the relocs end at the hash table.  */
221
  info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel)
222
                        / obj_reloc_entry_size (abfd));
223
  BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd)
224
              == (unsigned long) (info->dyninfo.ld_hash
225
                                  - info->dyninfo.ld_rel));
226
 
227
  info->valid = TRUE;
228
 
229
  return TRUE;
230
}
231
 
232
/* Return the amount of memory required for the dynamic symbols.  */
233
 
234
static long
235
sunos_get_dynamic_symtab_upper_bound (bfd *abfd)
236
{
237
  struct sunos_dynamic_info *info;
238
 
239
  if (! sunos_read_dynamic_info (abfd))
240
    return -1;
241
 
242
  info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
243
  if (! info->valid)
244
    {
245
      bfd_set_error (bfd_error_no_symbols);
246
      return -1;
247
    }
248
 
249
  return (info->dynsym_count + 1) * sizeof (asymbol *);
250
}
251
 
252
/* Read the external dynamic symbols.  */
253
 
254
static bfd_boolean
255
sunos_slurp_dynamic_symtab (bfd *abfd)
256
{
257
  struct sunos_dynamic_info *info;
258
  bfd_size_type amt;
259
 
260
  /* Get the general dynamic information.  */
261
  if (obj_aout_dynamic_info (abfd) == NULL)
262
    {
263
      if (! sunos_read_dynamic_info (abfd))
264
          return FALSE;
265
    }
266
 
267
  info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
268
  if (! info->valid)
269
    {
270
      bfd_set_error (bfd_error_no_symbols);
271
      return FALSE;
272
    }
273
 
274
  /* Get the dynamic nlist structures.  */
275
  if (info->dynsym == NULL)
276
    {
277
      amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE;
278
      info->dynsym = bfd_alloc (abfd, amt);
279
      if (info->dynsym == NULL && info->dynsym_count != 0)
280
        return FALSE;
281
      if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0
282
          || bfd_bread ((void *) info->dynsym, amt, abfd) != amt)
283
        {
284
          if (info->dynsym != NULL)
285
            {
286
              bfd_release (abfd, info->dynsym);
287
              info->dynsym = NULL;
288
            }
289
          return FALSE;
290
        }
291
    }
292
 
293
  /* Get the dynamic strings.  */
294
  if (info->dynstr == NULL)
295
    {
296
      amt = info->dyninfo.ld_symb_size;
297
      info->dynstr = bfd_alloc (abfd, amt);
298
      if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0)
299
        return FALSE;
300
      if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0
301
          || bfd_bread ((void *) info->dynstr, amt, abfd) != amt)
302
        {
303
          if (info->dynstr != NULL)
304
            {
305
              bfd_release (abfd, info->dynstr);
306
              info->dynstr = NULL;
307
            }
308
          return FALSE;
309
        }
310
    }
311
 
312
  return TRUE;
313
}
314
 
315
/* Read in the dynamic symbols.  */
316
 
317
static long
318
sunos_canonicalize_dynamic_symtab (bfd *abfd, asymbol **storage)
319
{
320
  struct sunos_dynamic_info *info;
321
  unsigned long i;
322
 
323
  if (! sunos_slurp_dynamic_symtab (abfd))
324
    return -1;
325
 
326
  info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
327
 
328
#ifdef CHECK_DYNAMIC_HASH
329
  /* Check my understanding of the dynamic hash table by making sure
330
     that each symbol can be located in the hash table.  */
331
  {
332
    bfd_size_type table_size;
333
    bfd_byte *table;
334
    bfd_size_type i;
335
 
336
    if (info->dyninfo.ld_buckets > info->dynsym_count)
337
      abort ();
338
    table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash;
339
    table = bfd_malloc (table_size);
340
    if (table == NULL && table_size != 0)
341
      abort ();
342
    if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0
343
        || bfd_bread ((void *) table, table_size, abfd) != table_size)
344
      abort ();
345
    for (i = 0; i < info->dynsym_count; i++)
346
      {
347
        unsigned char *name;
348
        unsigned long hash;
349
 
350
        name = ((unsigned char *) info->dynstr
351
                + GET_WORD (abfd, info->dynsym[i].e_strx));
352
        hash = 0;
353
        while (*name != '\0')
354
          hash = (hash << 1) + *name++;
355
        hash &= 0x7fffffff;
356
        hash %= info->dyninfo.ld_buckets;
357
        while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i)
358
          {
359
            hash = GET_WORD (abfd,
360
                             table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
361
            if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE)
362
              abort ();
363
          }
364
      }
365
    free (table);
366
  }
367
#endif /* CHECK_DYNAMIC_HASH */
368
 
369
  /* Get the asymbol structures corresponding to the dynamic nlist
370
     structures.  */
371
  if (info->canonical_dynsym == NULL)
372
    {
373
      bfd_size_type size;
374
      bfd_size_type strsize = info->dyninfo.ld_symb_size;
375
 
376
      size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type);
377
      info->canonical_dynsym = bfd_alloc (abfd, size);
378
      if (info->canonical_dynsym == NULL && info->dynsym_count != 0)
379
        return -1;
380
 
381
      if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym,
382
                                            info->dynsym,
383
                                            (bfd_size_type) info->dynsym_count,
384
                                            info->dynstr, strsize, TRUE))
385
        {
386
          if (info->canonical_dynsym != NULL)
387
            {
388
              bfd_release (abfd, info->canonical_dynsym);
389
              info->canonical_dynsym = NULL;
390
            }
391
          return -1;
392
        }
393
    }
394
 
395
  /* Return pointers to the dynamic asymbol structures.  */
396
  for (i = 0; i < info->dynsym_count; i++)
397
    *storage++ = (asymbol *) (info->canonical_dynsym + i);
398
  *storage = NULL;
399
 
400
  return info->dynsym_count;
401
}
402
 
403
/* Return the amount of memory required for the dynamic relocs.  */
404
 
405
static long
406
sunos_get_dynamic_reloc_upper_bound (bfd *abfd)
407
{
408
  struct sunos_dynamic_info *info;
409
 
410
  if (! sunos_read_dynamic_info (abfd))
411
    return -1;
412
 
413
  info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
414
  if (! info->valid)
415
    {
416
      bfd_set_error (bfd_error_no_symbols);
417
      return -1;
418
    }
419
 
420
  return (info->dynrel_count + 1) * sizeof (arelent *);
421
}
422
 
423
/* Read in the dynamic relocs.  */
424
 
425
static long
426
sunos_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, asymbol **syms)
427
{
428
  struct sunos_dynamic_info *info;
429
  unsigned long i;
430
  bfd_size_type size;
431
 
432
  /* Get the general dynamic information.  */
433
  if (obj_aout_dynamic_info (abfd) == NULL)
434
    {
435
      if (! sunos_read_dynamic_info (abfd))
436
        return -1;
437
    }
438
 
439
  info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
440
  if (! info->valid)
441
    {
442
      bfd_set_error (bfd_error_no_symbols);
443
      return -1;
444
    }
445
 
446
  /* Get the dynamic reloc information.  */
447
  if (info->dynrel == NULL)
448
    {
449
      size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd);
450
      info->dynrel = bfd_alloc (abfd, size);
451
      if (info->dynrel == NULL && size != 0)
452
        return -1;
453
      if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0
454
          || bfd_bread ((void *) info->dynrel, size, abfd) != size)
455
        {
456
          if (info->dynrel != NULL)
457
            {
458
              bfd_release (abfd, info->dynrel);
459
              info->dynrel = NULL;
460
            }
461
          return -1;
462
        }
463
    }
464
 
465
  /* Get the arelent structures corresponding to the dynamic reloc
466
     information.  */
467
  if (info->canonical_dynrel == NULL)
468
    {
469
      arelent *to;
470
 
471
      size = (bfd_size_type) info->dynrel_count * sizeof (arelent);
472
      info->canonical_dynrel = bfd_alloc (abfd, size);
473
      if (info->canonical_dynrel == NULL && info->dynrel_count != 0)
474
        return -1;
475
 
476
      to = info->canonical_dynrel;
477
 
478
      if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
479
        {
480
          struct reloc_ext_external *p;
481
          struct reloc_ext_external *pend;
482
 
483
          p = (struct reloc_ext_external *) info->dynrel;
484
          pend = p + info->dynrel_count;
485
          for (; p < pend; p++, to++)
486
            NAME (aout, swap_ext_reloc_in) (abfd, p, to, syms,
487
                                            (bfd_size_type) info->dynsym_count);
488
        }
489
      else
490
        {
491
          struct reloc_std_external *p;
492
          struct reloc_std_external *pend;
493
 
494
          p = (struct reloc_std_external *) info->dynrel;
495
          pend = p + info->dynrel_count;
496
          for (; p < pend; p++, to++)
497
            NAME (aout, swap_std_reloc_in) (abfd, p, to, syms,
498
                                            (bfd_size_type) info->dynsym_count);
499
        }
500
    }
501
 
502
  /* Return pointers to the dynamic arelent structures.  */
503
  for (i = 0; i < info->dynrel_count; i++)
504
    *storage++ = info->canonical_dynrel + i;
505
  *storage = NULL;
506
 
507
  return info->dynrel_count;
508
}
509
 
510
/* Code to handle linking of SunOS shared libraries.  */
511
 
512
/* A SPARC procedure linkage table entry is 12 bytes.  The first entry
513
   in the table is a jump which is filled in by the runtime linker.
514
   The remaining entries are branches back to the first entry,
515
   followed by an index into the relocation table encoded to look like
516
   a sethi of %g0.  */
517
 
518
#define SPARC_PLT_ENTRY_SIZE (12)
519
 
520
static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] =
521
{
522
  /* sethi %hi(0),%g1; address filled in by runtime linker.  */
523
  0x3, 0, 0, 0,
524
  /* jmp %g1; offset filled in by runtime linker.  */
525
  0x81, 0xc0, 0x60, 0,
526
  /* nop */
527
  0x1, 0, 0, 0
528
};
529
 
530
/* save %sp, -96, %sp */
531
#define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0)
532
/* call; address filled in later.  */
533
#define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000)
534
/* sethi; reloc index filled in later.  */
535
#define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000)
536
 
537
/* This sequence is used when for the jump table entry to a defined
538
   symbol in a complete executable.  It is used when linking PIC
539
   compiled code which is not being put into a shared library.  */
540
/* sethi <address to be filled in later>, %g1 */
541
#define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000)
542
/* jmp %g1 + <address to be filled in later> */
543
#define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000)
544
/* nop */
545
#define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000)
546
 
547
/* An m68k procedure linkage table entry is 8 bytes.  The first entry
548
   in the table is a jump which is filled in the by the runtime
549
   linker.  The remaining entries are branches back to the first
550
   entry, followed by a two byte index into the relocation table.  */
551
 
552
#define M68K_PLT_ENTRY_SIZE (8)
553
 
554
static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] =
555
{
556
  /* jmps @# */
557
  0x4e, 0xf9,
558
  /* Filled in by runtime linker with a magic address.  */
559
  0, 0, 0, 0,
560
  /* Not used?  */
561
  0, 0
562
};
563
 
564
/* bsrl */
565
#define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff)
566
/* Remaining words filled in later.  */
567
 
568
/* An entry in the SunOS linker hash table.  */
569
 
570
struct sunos_link_hash_entry
571
{
572
  struct aout_link_hash_entry root;
573
 
574
  /* If this is a dynamic symbol, this is its index into the dynamic
575
     symbol table.  This is initialized to -1.  As the linker looks at
576
     the input files, it changes this to -2 if it will be added to the
577
     dynamic symbol table.  After all the input files have been seen,
578
     the linker will know whether to build a dynamic symbol table; if
579
     it does build one, this becomes the index into the table.  */
580
  long dynindx;
581
 
582
  /* If this is a dynamic symbol, this is the index of the name in the
583
     dynamic symbol string table.  */
584
  long dynstr_index;
585
 
586
  /* The offset into the global offset table used for this symbol.  If
587
     the symbol does not require a GOT entry, this is 0.  */
588
  bfd_vma got_offset;
589
 
590
  /* The offset into the procedure linkage table used for this symbol.
591
     If the symbol does not require a PLT entry, this is 0.  */
592
  bfd_vma plt_offset;
593
 
594
  /* Some linker flags.  */
595
  unsigned char flags;
596
  /* Symbol is referenced by a regular object.  */
597
#define SUNOS_REF_REGULAR 01
598
  /* Symbol is defined by a regular object.  */
599
#define SUNOS_DEF_REGULAR 02
600
  /* Symbol is referenced by a dynamic object.  */
601
#define SUNOS_REF_DYNAMIC 04
602
  /* Symbol is defined by a dynamic object.  */
603
#define SUNOS_DEF_DYNAMIC 010
604
  /* Symbol is a constructor symbol in a regular object.  */
605
#define SUNOS_CONSTRUCTOR 020
606
};
607
 
608
/* The SunOS linker hash table.  */
609
 
610
struct sunos_link_hash_table
611
{
612
  struct aout_link_hash_table root;
613
 
614
  /* The object which holds the dynamic sections.  */
615
  bfd *dynobj;
616
 
617
  /* Whether we have created the dynamic sections.  */
618
  bfd_boolean dynamic_sections_created;
619
 
620
  /* Whether we need the dynamic sections.  */
621
  bfd_boolean dynamic_sections_needed;
622
 
623
  /* Whether we need the .got table.  */
624
  bfd_boolean got_needed;
625
 
626
  /* The number of dynamic symbols.  */
627
  size_t dynsymcount;
628
 
629
  /* The number of buckets in the hash table.  */
630
  size_t bucketcount;
631
 
632
  /* The list of dynamic objects needed by dynamic objects included in
633
     the link.  */
634
  struct bfd_link_needed_list *needed;
635
 
636
  /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section.  */
637
  bfd_vma got_base;
638
};
639
 
640
/* Routine to create an entry in an SunOS link hash table.  */
641
 
642
static struct bfd_hash_entry *
643
sunos_link_hash_newfunc (struct bfd_hash_entry *entry,
644
                         struct bfd_hash_table *table,
645
                         const char *string)
646
{
647
  struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry;
648
 
649
  /* Allocate the structure if it has not already been allocated by a
650
     subclass.  */
651
  if (ret ==  NULL)
652
    ret = bfd_hash_allocate (table, sizeof (* ret));
653
  if (ret == NULL)
654
    return NULL;
655
 
656
  /* Call the allocation method of the superclass.  */
657
  ret = ((struct sunos_link_hash_entry *)
658
         NAME (aout, link_hash_newfunc) ((struct bfd_hash_entry *) ret,
659
                                         table, string));
660
  if (ret != NULL)
661
    {
662
      /* Set local fields.  */
663
      ret->dynindx = -1;
664
      ret->dynstr_index = -1;
665
      ret->got_offset = 0;
666
      ret->plt_offset = 0;
667
      ret->flags = 0;
668
    }
669
 
670
  return (struct bfd_hash_entry *) ret;
671
}
672
 
673
/* Create a SunOS link hash table.  */
674
 
675
static struct bfd_link_hash_table *
676
sunos_link_hash_table_create (bfd *abfd)
677
{
678
  struct sunos_link_hash_table *ret;
679
  bfd_size_type amt = sizeof (struct sunos_link_hash_table);
680
 
681
  ret = bfd_malloc (amt);
682
  if (ret ==  NULL)
683
    return NULL;
684
  if (!NAME (aout, link_hash_table_init) (&ret->root, abfd,
685
                                          sunos_link_hash_newfunc,
686
                                          sizeof (struct sunos_link_hash_entry)))
687
    {
688
      free (ret);
689
      return NULL;
690
    }
691
 
692
  ret->dynobj = NULL;
693
  ret->dynamic_sections_created = FALSE;
694
  ret->dynamic_sections_needed = FALSE;
695
  ret->got_needed = FALSE;
696
  ret->dynsymcount = 0;
697
  ret->bucketcount = 0;
698
  ret->needed = NULL;
699
  ret->got_base = 0;
700
 
701
  return &ret->root.root;
702
}
703
 
704
/* Look up an entry in an SunOS link hash table.  */
705
 
706
#define sunos_link_hash_lookup(table, string, create, copy, follow) \
707
  ((struct sunos_link_hash_entry *) \
708
   aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\
709
                          (follow)))
710
 
711
/* Traverse a SunOS link hash table.  */
712
 
713
#define sunos_link_hash_traverse(table, func, info)                     \
714
  (aout_link_hash_traverse                                              \
715
   (&(table)->root,                                                     \
716
    (bfd_boolean (*) (struct aout_link_hash_entry *, void *)) (func),   \
717
    (info)))
718
 
719
/* Get the SunOS link hash table from the info structure.  This is
720
   just a cast.  */
721
 
722
#define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash))
723
 
724
/* Create the dynamic sections needed if we are linking against a
725
   dynamic object, or if we are linking PIC compiled code.  ABFD is a
726
   bfd we can attach the dynamic sections to.  The linker script will
727
   look for these special sections names and put them in the right
728
   place in the output file.  See include/aout/sun4.h for more details
729
   of the dynamic linking information.  */
730
 
731
static bfd_boolean
732
sunos_create_dynamic_sections (bfd *abfd,
733
                               struct bfd_link_info *info,
734
                               bfd_boolean needed)
735
{
736
  asection *s;
737
 
738
  if (! sunos_hash_table (info)->dynamic_sections_created)
739
    {
740
      flagword flags;
741
 
742
      sunos_hash_table (info)->dynobj = abfd;
743
 
744
      flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
745
               | SEC_LINKER_CREATED);
746
 
747
      /* The .dynamic section holds the basic dynamic information: the
748
         sun4_dynamic structure, the dynamic debugger information, and
749
         the sun4_dynamic_link structure.  */
750
      s = bfd_make_section_with_flags (abfd, ".dynamic", flags);
751
      if (s == NULL
752
          || ! bfd_set_section_alignment (abfd, s, 2))
753
        return FALSE;
754
 
755
      /* The .got section holds the global offset table.  The address
756
         is put in the ld_got field.  */
757
      s = bfd_make_section_with_flags (abfd, ".got", flags);
758
      if (s == NULL
759
          || ! bfd_set_section_alignment (abfd, s, 2))
760
        return FALSE;
761
 
762
      /* The .plt section holds the procedure linkage table.  The
763
         address is put in the ld_plt field.  */
764
      s = bfd_make_section_with_flags (abfd, ".plt", flags | SEC_CODE);
765
      if (s == NULL
766
          || ! bfd_set_section_alignment (abfd, s, 2))
767
        return FALSE;
768
 
769
      /* The .dynrel section holds the dynamic relocs.  The address is
770
         put in the ld_rel field.  */
771
      s = bfd_make_section_with_flags (abfd, ".dynrel", flags | SEC_READONLY);
772
      if (s == NULL
773
          || ! bfd_set_section_alignment (abfd, s, 2))
774
        return FALSE;
775
 
776
      /* The .hash section holds the dynamic hash table.  The address
777
         is put in the ld_hash field.  */
778
      s = bfd_make_section_with_flags (abfd, ".hash", flags | SEC_READONLY);
779
      if (s == NULL
780
          || ! bfd_set_section_alignment (abfd, s, 2))
781
        return FALSE;
782
 
783
      /* The .dynsym section holds the dynamic symbols.  The address
784
         is put in the ld_stab field.  */
785
      s = bfd_make_section_with_flags (abfd, ".dynsym", flags | SEC_READONLY);
786
      if (s == NULL
787
          || ! bfd_set_section_alignment (abfd, s, 2))
788
        return FALSE;
789
 
790
      /* The .dynstr section holds the dynamic symbol string table.
791
         The address is put in the ld_symbols field.  */
792
      s = bfd_make_section_with_flags (abfd, ".dynstr", flags | SEC_READONLY);
793
      if (s == NULL
794
          || ! bfd_set_section_alignment (abfd, s, 2))
795
        return FALSE;
796
 
797
      sunos_hash_table (info)->dynamic_sections_created = TRUE;
798
    }
799
 
800
  if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed)
801
      || info->shared)
802
    {
803
      bfd *dynobj;
804
 
805
      dynobj = sunos_hash_table (info)->dynobj;
806
 
807
      s = bfd_get_section_by_name (dynobj, ".got");
808
      if (s->size == 0)
809
        s->size = BYTES_IN_WORD;
810
 
811
      sunos_hash_table (info)->dynamic_sections_needed = TRUE;
812
      sunos_hash_table (info)->got_needed = TRUE;
813
    }
814
 
815
  return TRUE;
816
}
817
 
818
/* Add dynamic symbols during a link.  This is called by the a.out
819
   backend linker for each object it encounters.  */
820
 
821
static bfd_boolean
822
sunos_add_dynamic_symbols (bfd *abfd,
823
                           struct bfd_link_info *info,
824
                           struct external_nlist **symsp,
825
                           bfd_size_type *sym_countp,
826
                           char **stringsp)
827
{
828
  bfd *dynobj;
829
  struct sunos_dynamic_info *dinfo;
830
  unsigned long need;
831
 
832
  /* Make sure we have all the required sections.  */
833
  if (info->output_bfd->xvec == abfd->xvec)
834
    {
835
      if (! sunos_create_dynamic_sections (abfd, info,
836
                                           ((abfd->flags & DYNAMIC) != 0
837
                                            && !info->relocatable)))
838
        return FALSE;
839
    }
840
 
841
  /* There is nothing else to do for a normal object.  */
842
  if ((abfd->flags & DYNAMIC) == 0)
843
    return TRUE;
844
 
845
  dynobj = sunos_hash_table (info)->dynobj;
846
 
847
  /* We do not want to include the sections in a dynamic object in the
848
     output file.  We hack by simply clobbering the list of sections
849
     in the BFD.  This could be handled more cleanly by, say, a new
850
     section flag; the existing SEC_NEVER_LOAD flag is not the one we
851
     want, because that one still implies that the section takes up
852
     space in the output file.  If this is the first object we have
853
     seen, we must preserve the dynamic sections we just created.  */
854
  if (abfd != dynobj)
855
    abfd->sections = NULL;
856
  else
857
    {
858
      asection *s;
859
 
860
      for (s = abfd->sections; s != NULL; s = s->next)
861
        {
862
          if ((s->flags & SEC_LINKER_CREATED) == 0)
863
            bfd_section_list_remove (abfd, s);
864
        }
865
    }
866
 
867
  /* The native linker seems to just ignore dynamic objects when -r is
868
     used.  */
869
  if (info->relocatable)
870
    return TRUE;
871
 
872
  /* There's no hope of using a dynamic object which does not exactly
873
     match the format of the output file.  */
874
  if (info->output_bfd->xvec != abfd->xvec)
875
    {
876
      bfd_set_error (bfd_error_invalid_operation);
877
      return FALSE;
878
    }
879
 
880
  /* Make sure we have a .need and a .rules sections.  These are only
881
     needed if there really is a dynamic object in the link, so they
882
     are not added by sunos_create_dynamic_sections.  */
883
  if (bfd_get_section_by_name (dynobj, ".need") == NULL)
884
    {
885
      /* The .need section holds the list of names of shared objets
886
         which must be included at runtime.  The address of this
887
         section is put in the ld_need field.  */
888
      flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
889
                        | SEC_IN_MEMORY | SEC_READONLY);
890
      asection *s = bfd_make_section_with_flags (dynobj, ".need", flags);
891
      if (s == NULL
892
          || ! bfd_set_section_alignment (dynobj, s, 2))
893
        return FALSE;
894
    }
895
 
896
  if (bfd_get_section_by_name (dynobj, ".rules") == NULL)
897
    {
898
      /* The .rules section holds the path to search for shared
899
         objects.  The address of this section is put in the ld_rules
900
         field.  */
901
      flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
902
                        | SEC_IN_MEMORY | SEC_READONLY);
903
      asection *s = bfd_make_section_with_flags (dynobj, ".rules", flags);
904
      if (s == NULL
905
          || ! bfd_set_section_alignment (dynobj, s, 2))
906
        return FALSE;
907
    }
908
 
909
  /* Pick up the dynamic symbols and return them to the caller.  */
910
  if (! sunos_slurp_dynamic_symtab (abfd))
911
    return FALSE;
912
 
913
  dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
914
  *symsp = dinfo->dynsym;
915
  *sym_countp = dinfo->dynsym_count;
916
  *stringsp = dinfo->dynstr;
917
 
918
  /* Record information about any other objects needed by this one.  */
919
  need = dinfo->dyninfo.ld_need;
920
  while (need != 0)
921
    {
922
      bfd_byte buf[16];
923
      unsigned long name, flags;
924
      unsigned short major_vno, minor_vno;
925
      struct bfd_link_needed_list *needed, **pp;
926
      char *namebuf, *p;
927
      bfd_size_type alc;
928
      bfd_byte b;
929
      char *namecopy;
930
 
931
      if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0
932
          || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16)
933
        return FALSE;
934
 
935
      /* For the format of an ld_need entry, see aout/sun4.h.  We
936
         should probably define structs for this manipulation.  */
937
      name = bfd_get_32 (abfd, buf);
938
      flags = bfd_get_32 (abfd, buf + 4);
939
      major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8);
940
      minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10);
941
      need = bfd_get_32 (abfd, buf + 12);
942
 
943
      alc = sizeof (struct bfd_link_needed_list);
944
      needed = bfd_alloc (abfd, alc);
945
      if (needed == NULL)
946
        return FALSE;
947
      needed->by = abfd;
948
 
949
      /* We return the name as [-l]name[.maj][.min].  */
950
      alc = 30;
951
      namebuf = bfd_malloc (alc + 1);
952
      if (namebuf == NULL)
953
        return FALSE;
954
      p = namebuf;
955
 
956
      if ((flags & 0x80000000) != 0)
957
        {
958
          *p++ = '-';
959
          *p++ = 'l';
960
        }
961
      if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0)
962
        {
963
          free (namebuf);
964
          return FALSE;
965
        }
966
 
967
      do
968
        {
969
          if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1)
970
            {
971
              free (namebuf);
972
              return FALSE;
973
            }
974
 
975
          if ((bfd_size_type) (p - namebuf) >= alc)
976
            {
977
              char *n;
978
 
979
              alc *= 2;
980
              n = bfd_realloc (namebuf, alc + 1);
981
              if (n == NULL)
982
                {
983
                  free (namebuf);
984
                  return FALSE;
985
                }
986
              p = n + (p - namebuf);
987
              namebuf = n;
988
            }
989
 
990
          *p++ = b;
991
        }
992
      while (b != '\0');
993
 
994
      if (major_vno == 0)
995
        *p = '\0';
996
      else
997
        {
998
          char majbuf[30];
999
          char minbuf[30];
1000
 
1001
          sprintf (majbuf, ".%d", major_vno);
1002
          if (minor_vno == 0)
1003
            minbuf[0] = '\0';
1004
          else
1005
            sprintf (minbuf, ".%d", minor_vno);
1006
 
1007
          if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc)
1008
            {
1009
              char *n;
1010
 
1011
              alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf);
1012
              n = bfd_realloc (namebuf, alc + 1);
1013
              if (n == NULL)
1014
                {
1015
                  free (namebuf);
1016
                  return FALSE;
1017
                }
1018
              p = n + (p - namebuf);
1019
              namebuf = n;
1020
            }
1021
 
1022
          strcpy (p, majbuf);
1023
          strcat (p, minbuf);
1024
        }
1025
 
1026
      namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1);
1027
      if (namecopy == NULL)
1028
        {
1029
          free (namebuf);
1030
          return FALSE;
1031
        }
1032
      strcpy (namecopy, namebuf);
1033
      free (namebuf);
1034
      needed->name = namecopy;
1035
 
1036
      needed->next = NULL;
1037
 
1038
      for (pp = &sunos_hash_table (info)->needed;
1039
           *pp != NULL;
1040
           pp = &(*pp)->next)
1041
        ;
1042
      *pp = needed;
1043
    }
1044
 
1045
  return TRUE;
1046
}
1047
 
1048
/* Function to add a single symbol to the linker hash table.  This is
1049
   a wrapper around _bfd_generic_link_add_one_symbol which handles the
1050
   tweaking needed for dynamic linking support.  */
1051
 
1052
static bfd_boolean
1053
sunos_add_one_symbol (struct bfd_link_info *info,
1054
                      bfd *abfd,
1055
                      const char *name,
1056
                      flagword flags,
1057
                      asection *section,
1058
                      bfd_vma value,
1059
                      const char *string,
1060
                      bfd_boolean copy,
1061
                      bfd_boolean collect,
1062
                      struct bfd_link_hash_entry **hashp)
1063
{
1064
  struct sunos_link_hash_entry *h;
1065
  int new_flag;
1066
 
1067
  if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0
1068
      || ! bfd_is_und_section (section))
1069
    h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy,
1070
                                FALSE);
1071
  else
1072
    h = ((struct sunos_link_hash_entry *)
1073
         bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE));
1074
  if (h == NULL)
1075
    return FALSE;
1076
 
1077
  if (hashp != NULL)
1078
    *hashp = (struct bfd_link_hash_entry *) h;
1079
 
1080
  /* Treat a common symbol in a dynamic object as defined in the .bss
1081
     section of the dynamic object.  We don't want to allocate space
1082
     for it in our process image.  */
1083
  if ((abfd->flags & DYNAMIC) != 0
1084
      && bfd_is_com_section (section))
1085
    section = obj_bsssec (abfd);
1086
 
1087
  if (! bfd_is_und_section (section)
1088
      && h->root.root.type != bfd_link_hash_new
1089
      && h->root.root.type != bfd_link_hash_undefined
1090
      && h->root.root.type != bfd_link_hash_defweak)
1091
    {
1092
      /* We are defining the symbol, and it is already defined.  This
1093
         is a potential multiple definition error.  */
1094
      if ((abfd->flags & DYNAMIC) != 0)
1095
        {
1096
          /* The definition we are adding is from a dynamic object.
1097
             We do not want this new definition to override the
1098
             existing definition, so we pretend it is just a
1099
             reference.  */
1100
          section = bfd_und_section_ptr;
1101
        }
1102
      else if (h->root.root.type == bfd_link_hash_defined
1103
               && h->root.root.u.def.section->owner != NULL
1104
               && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1105
        {
1106
          /* The existing definition is from a dynamic object.  We
1107
             want to override it with the definition we just found.
1108
             Clobber the existing definition.  */
1109
          h->root.root.type = bfd_link_hash_undefined;
1110
          h->root.root.u.undef.abfd = h->root.root.u.def.section->owner;
1111
        }
1112
      else if (h->root.root.type == bfd_link_hash_common
1113
               && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0)
1114
        {
1115
          /* The existing definition is from a dynamic object.  We
1116
             want to override it with the definition we just found.
1117
             Clobber the existing definition.  We can't set it to new,
1118
             because it is on the undefined list.  */
1119
          h->root.root.type = bfd_link_hash_undefined;
1120
          h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner;
1121
        }
1122
    }
1123
 
1124
  if ((abfd->flags & DYNAMIC) != 0
1125
      && abfd->xvec == info->output_bfd->xvec
1126
      && (h->flags & SUNOS_CONSTRUCTOR) != 0)
1127
    /* The existing symbol is a constructor symbol, and this symbol
1128
       is from a dynamic object.  A constructor symbol is actually a
1129
       definition, although the type will be bfd_link_hash_undefined
1130
       at this point.  We want to ignore the definition from the
1131
       dynamic object.  */
1132
    section = bfd_und_section_ptr;
1133
  else if ((flags & BSF_CONSTRUCTOR) != 0
1134
           && (abfd->flags & DYNAMIC) == 0
1135
           && h->root.root.type == bfd_link_hash_defined
1136
           && h->root.root.u.def.section->owner != NULL
1137
           && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1138
    /* The existing symbol is defined by a dynamic object, and this
1139
       is a constructor symbol.  As above, we want to force the use
1140
       of the constructor symbol from the regular object.  */
1141
    h->root.root.type = bfd_link_hash_new;
1142
 
1143
  /* Do the usual procedure for adding a symbol.  */
1144
  if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section,
1145
                                          value, string, copy, collect,
1146
                                          hashp))
1147
    return FALSE;
1148
 
1149
  if (abfd->xvec == info->output_bfd->xvec)
1150
    {
1151
      /* Set a flag in the hash table entry indicating the type of
1152
         reference or definition we just found.  Keep a count of the
1153
         number of dynamic symbols we find.  A dynamic symbol is one
1154
         which is referenced or defined by both a regular object and a
1155
         shared object.  */
1156
      if ((abfd->flags & DYNAMIC) == 0)
1157
        {
1158
          if (bfd_is_und_section (section))
1159
            new_flag = SUNOS_REF_REGULAR;
1160
          else
1161
            new_flag = SUNOS_DEF_REGULAR;
1162
        }
1163
      else
1164
        {
1165
          if (bfd_is_und_section (section))
1166
            new_flag = SUNOS_REF_DYNAMIC;
1167
          else
1168
            new_flag = SUNOS_DEF_DYNAMIC;
1169
        }
1170
      h->flags |= new_flag;
1171
 
1172
      if (h->dynindx == -1
1173
          && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
1174
        {
1175
          ++sunos_hash_table (info)->dynsymcount;
1176
          h->dynindx = -2;
1177
        }
1178
 
1179
      if ((flags & BSF_CONSTRUCTOR) != 0
1180
          && (abfd->flags & DYNAMIC) == 0)
1181
        h->flags |= SUNOS_CONSTRUCTOR;
1182
    }
1183
 
1184
  return TRUE;
1185
}
1186
 
1187
extern const bfd_target MY (vec);
1188
 
1189
/* Return the list of objects needed by BFD.  */
1190
 
1191
struct bfd_link_needed_list *
1192
bfd_sunos_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED,
1193
                           struct bfd_link_info *info)
1194
{
1195
  if (info->output_bfd->xvec != &MY (vec))
1196
    return NULL;
1197
  return sunos_hash_table (info)->needed;
1198
}
1199
 
1200
/* Record an assignment made to a symbol by a linker script.  We need
1201
   this in case some dynamic object refers to this symbol.  */
1202
 
1203
bfd_boolean
1204
bfd_sunos_record_link_assignment (bfd *output_bfd,
1205
                                  struct bfd_link_info *info,
1206
                                  const char *name)
1207
{
1208
  struct sunos_link_hash_entry *h;
1209
 
1210
  if (output_bfd->xvec != &MY(vec))
1211
    return TRUE;
1212
 
1213
  /* This is called after we have examined all the input objects.  If
1214
     the symbol does not exist, it merely means that no object refers
1215
     to it, and we can just ignore it at this point.  */
1216
  h = sunos_link_hash_lookup (sunos_hash_table (info), name,
1217
                              FALSE, FALSE, FALSE);
1218
  if (h == NULL)
1219
    return TRUE;
1220
 
1221
  /* In a shared library, the __DYNAMIC symbol does not appear in the
1222
     dynamic symbol table.  */
1223
  if (! info->shared || strcmp (name, "__DYNAMIC") != 0)
1224
    {
1225
      h->flags |= SUNOS_DEF_REGULAR;
1226
 
1227
      if (h->dynindx == -1)
1228
        {
1229
          ++sunos_hash_table (info)->dynsymcount;
1230
          h->dynindx = -2;
1231
        }
1232
    }
1233
 
1234
  return TRUE;
1235
}
1236
 
1237
/* Scan the relocs for an input section using standard relocs.  We
1238
   need to figure out what to do for each reloc against a dynamic
1239
   symbol.  If the symbol is in the .text section, an entry is made in
1240
   the procedure linkage table.  Note that this will do the wrong
1241
   thing if the symbol is actually data; I don't think the Sun 3
1242
   native linker handles this case correctly either.  If the symbol is
1243
   not in the .text section, we must preserve the reloc as a dynamic
1244
   reloc.  FIXME: We should also handle the PIC relocs here by
1245
   building global offset table entries.  */
1246
 
1247
static bfd_boolean
1248
sunos_scan_std_relocs (struct bfd_link_info *info,
1249
                       bfd *abfd,
1250
                       asection *sec ATTRIBUTE_UNUSED,
1251
                       const struct reloc_std_external *relocs,
1252
                       bfd_size_type rel_size)
1253
{
1254
  bfd *dynobj;
1255
  asection *splt = NULL;
1256
  asection *srel = NULL;
1257
  struct sunos_link_hash_entry **sym_hashes;
1258
  const struct reloc_std_external *rel, *relend;
1259
 
1260
  /* We only know how to handle m68k plt entries.  */
1261
  if (bfd_get_arch (abfd) != bfd_arch_m68k)
1262
    {
1263
      bfd_set_error (bfd_error_invalid_target);
1264
      return FALSE;
1265
    }
1266
 
1267
  dynobj = NULL;
1268
 
1269
  sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
1270
 
1271
  relend = relocs + rel_size / RELOC_STD_SIZE;
1272
  for (rel = relocs; rel < relend; rel++)
1273
    {
1274
      int r_index;
1275
      struct sunos_link_hash_entry *h;
1276
 
1277
      /* We only want relocs against external symbols.  */
1278
      if (bfd_header_big_endian (abfd))
1279
        {
1280
          if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0)
1281
            continue;
1282
        }
1283
      else
1284
        {
1285
          if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0)
1286
            continue;
1287
        }
1288
 
1289
      /* Get the symbol index.  */
1290
      if (bfd_header_big_endian (abfd))
1291
        r_index = ((rel->r_index[0] << 16)
1292
                   | (rel->r_index[1] << 8)
1293
                   | rel->r_index[2]);
1294
      else
1295
        r_index = ((rel->r_index[2] << 16)
1296
                   | (rel->r_index[1] << 8)
1297
                   | rel->r_index[0]);
1298
 
1299
      /* Get the hash table entry.  */
1300
      h = sym_hashes[r_index];
1301
      if (h == NULL)
1302
        /* This should not normally happen, but it will in any case
1303
           be caught in the relocation phase.  */
1304
        continue;
1305
 
1306
      /* At this point common symbols have already been allocated, so
1307
         we don't have to worry about them.  We need to consider that
1308
         we may have already seen this symbol and marked it undefined;
1309
         if the symbol is really undefined, then SUNOS_DEF_DYNAMIC
1310
         will be zero.  */
1311
      if (h->root.root.type != bfd_link_hash_defined
1312
          && h->root.root.type != bfd_link_hash_defweak
1313
          && h->root.root.type != bfd_link_hash_undefined)
1314
        continue;
1315
 
1316
      if ((h->flags & SUNOS_DEF_DYNAMIC) == 0
1317
          || (h->flags & SUNOS_DEF_REGULAR) != 0)
1318
        continue;
1319
 
1320
      if (dynobj == NULL)
1321
        {
1322
          asection *sgot;
1323
 
1324
          if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1325
            return FALSE;
1326
          dynobj = sunos_hash_table (info)->dynobj;
1327
          splt = bfd_get_section_by_name (dynobj, ".plt");
1328
          srel = bfd_get_section_by_name (dynobj, ".dynrel");
1329
          BFD_ASSERT (splt != NULL && srel != NULL);
1330
 
1331
          sgot = bfd_get_section_by_name (dynobj, ".got");
1332
          BFD_ASSERT (sgot != NULL);
1333
          if (sgot->size == 0)
1334
            sgot->size = BYTES_IN_WORD;
1335
          sunos_hash_table (info)->got_needed = TRUE;
1336
        }
1337
 
1338
      BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0);
1339
      BFD_ASSERT (h->plt_offset != 0
1340
                  || ((h->root.root.type == bfd_link_hash_defined
1341
                       || h->root.root.type == bfd_link_hash_defweak)
1342
                      ? (h->root.root.u.def.section->owner->flags
1343
                         & DYNAMIC) != 0
1344
                      : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0));
1345
 
1346
      /* This reloc is against a symbol defined only by a dynamic
1347
         object.  */
1348
      if (h->root.root.type == bfd_link_hash_undefined)
1349
        /* Presumably this symbol was marked as being undefined by
1350
           an earlier reloc.  */
1351
        srel->size += RELOC_STD_SIZE;
1352
      else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0)
1353
        {
1354
          bfd *sub;
1355
 
1356
          /* This reloc is not in the .text section.  It must be
1357
             copied into the dynamic relocs.  We mark the symbol as
1358
             being undefined.  */
1359
          srel->size += RELOC_STD_SIZE;
1360
          sub = h->root.root.u.def.section->owner;
1361
          h->root.root.type = bfd_link_hash_undefined;
1362
          h->root.root.u.undef.abfd = sub;
1363
        }
1364
      else
1365
        {
1366
          /* This symbol is in the .text section.  We must give it an
1367
             entry in the procedure linkage table, if we have not
1368
             already done so.  We change the definition of the symbol
1369
             to the .plt section; this will cause relocs against it to
1370
             be handled correctly.  */
1371
          if (h->plt_offset == 0)
1372
            {
1373
              if (splt->size == 0)
1374
                splt->size = M68K_PLT_ENTRY_SIZE;
1375
              h->plt_offset = splt->size;
1376
 
1377
              if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1378
                {
1379
                  h->root.root.u.def.section = splt;
1380
                  h->root.root.u.def.value = splt->size;
1381
                }
1382
 
1383
              splt->size += M68K_PLT_ENTRY_SIZE;
1384
 
1385
              /* We may also need a dynamic reloc entry.  */
1386
              if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1387
                srel->size += RELOC_STD_SIZE;
1388
            }
1389
        }
1390
    }
1391
 
1392
  return TRUE;
1393
}
1394
 
1395
/* Scan the relocs for an input section using extended relocs.  We
1396
   need to figure out what to do for each reloc against a dynamic
1397
   symbol.  If the reloc is a WDISP30, and the symbol is in the .text
1398
   section, an entry is made in the procedure linkage table.
1399
   Otherwise, we must preserve the reloc as a dynamic reloc.  */
1400
 
1401
static bfd_boolean
1402
sunos_scan_ext_relocs (struct bfd_link_info *info,
1403
                       bfd *abfd,
1404
                       asection *sec ATTRIBUTE_UNUSED,
1405
                       const struct reloc_ext_external *relocs,
1406
                       bfd_size_type rel_size)
1407
{
1408
  bfd *dynobj;
1409
  struct sunos_link_hash_entry **sym_hashes;
1410
  const struct reloc_ext_external *rel, *relend;
1411
  asection *splt = NULL;
1412
  asection *sgot = NULL;
1413
  asection *srel = NULL;
1414
  bfd_size_type amt;
1415
 
1416
  /* We only know how to handle SPARC plt entries.  */
1417
  if (bfd_get_arch (abfd) != bfd_arch_sparc)
1418
    {
1419
      bfd_set_error (bfd_error_invalid_target);
1420
      return FALSE;
1421
    }
1422
 
1423
  dynobj = NULL;
1424
 
1425
  sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
1426
 
1427
  relend = relocs + rel_size / RELOC_EXT_SIZE;
1428
  for (rel = relocs; rel < relend; rel++)
1429
    {
1430
      unsigned int r_index;
1431
      int r_extern;
1432
      int r_type;
1433
      struct sunos_link_hash_entry *h = NULL;
1434
 
1435
      /* Swap in the reloc information.  */
1436
      if (bfd_header_big_endian (abfd))
1437
        {
1438
          r_index = ((rel->r_index[0] << 16)
1439
                     | (rel->r_index[1] << 8)
1440
                     | rel->r_index[2]);
1441
          r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
1442
          r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
1443
                    >> RELOC_EXT_BITS_TYPE_SH_BIG);
1444
        }
1445
      else
1446
        {
1447
          r_index = ((rel->r_index[2] << 16)
1448
                     | (rel->r_index[1] << 8)
1449
                     | rel->r_index[0]);
1450
          r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
1451
          r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
1452
                    >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
1453
        }
1454
 
1455
      if (r_extern)
1456
        {
1457
          h = sym_hashes[r_index];
1458
          if (h == NULL)
1459
            {
1460
              /* This should not normally happen, but it will in any
1461
                 case be caught in the relocation phase.  */
1462
              continue;
1463
            }
1464
        }
1465
 
1466
      /* If this is a base relative reloc, we need to make an entry in
1467
         the .got section.  */
1468
      if (r_type == RELOC_BASE10
1469
          || r_type == RELOC_BASE13
1470
          || r_type == RELOC_BASE22)
1471
        {
1472
          if (dynobj == NULL)
1473
            {
1474
              if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1475
                return FALSE;
1476
              dynobj = sunos_hash_table (info)->dynobj;
1477
              splt = bfd_get_section_by_name (dynobj, ".plt");
1478
              sgot = bfd_get_section_by_name (dynobj, ".got");
1479
              srel = bfd_get_section_by_name (dynobj, ".dynrel");
1480
              BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1481
 
1482
              /* Make sure we have an initial entry in the .got table.  */
1483
              if (sgot->size == 0)
1484
                sgot->size = BYTES_IN_WORD;
1485
              sunos_hash_table (info)->got_needed = TRUE;
1486
            }
1487
 
1488
          if (r_extern)
1489
            {
1490
              if (h->got_offset != 0)
1491
                continue;
1492
 
1493
              h->got_offset = sgot->size;
1494
            }
1495
          else
1496
            {
1497
              if (r_index >= bfd_get_symcount (abfd))
1498
                /* This is abnormal, but should be caught in the
1499
                   relocation phase.  */
1500
                continue;
1501
 
1502
              if (adata (abfd).local_got_offsets == NULL)
1503
                {
1504
                  amt = bfd_get_symcount (abfd);
1505
                  amt *= sizeof (bfd_vma);
1506
                  adata (abfd).local_got_offsets = bfd_zalloc (abfd, amt);
1507
                  if (adata (abfd).local_got_offsets == NULL)
1508
                    return FALSE;
1509
                }
1510
 
1511
              if (adata (abfd).local_got_offsets[r_index] != 0)
1512
                continue;
1513
 
1514
              adata (abfd).local_got_offsets[r_index] = sgot->size;
1515
            }
1516
 
1517
          sgot->size += BYTES_IN_WORD;
1518
 
1519
          /* If we are making a shared library, or if the symbol is
1520
             defined by a dynamic object, we will need a dynamic reloc
1521
             entry.  */
1522
          if (info->shared
1523
              || (h != NULL
1524
                  && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1525
                  && (h->flags & SUNOS_DEF_REGULAR) == 0))
1526
            srel->size += RELOC_EXT_SIZE;
1527
 
1528
          continue;
1529
        }
1530
 
1531
      /* Otherwise, we are only interested in relocs against symbols
1532
         defined in dynamic objects but not in regular objects.  We
1533
         only need to consider relocs against external symbols.  */
1534
      if (! r_extern)
1535
        {
1536
          /* But, if we are creating a shared library, we need to
1537
             generate an absolute reloc.  */
1538
          if (info->shared)
1539
            {
1540
              if (dynobj == NULL)
1541
                {
1542
                  if (! sunos_create_dynamic_sections (abfd, info, TRUE))
1543
                    return FALSE;
1544
                  dynobj = sunos_hash_table (info)->dynobj;
1545
                  splt = bfd_get_section_by_name (dynobj, ".plt");
1546
                  sgot = bfd_get_section_by_name (dynobj, ".got");
1547
                  srel = bfd_get_section_by_name (dynobj, ".dynrel");
1548
                  BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1549
                }
1550
 
1551
              srel->size += RELOC_EXT_SIZE;
1552
            }
1553
 
1554
          continue;
1555
        }
1556
 
1557
      /* At this point common symbols have already been allocated, so
1558
         we don't have to worry about them.  We need to consider that
1559
         we may have already seen this symbol and marked it undefined;
1560
         if the symbol is really undefined, then SUNOS_DEF_DYNAMIC
1561
         will be zero.  */
1562
      if (h->root.root.type != bfd_link_hash_defined
1563
          && h->root.root.type != bfd_link_hash_defweak
1564
          && h->root.root.type != bfd_link_hash_undefined)
1565
        continue;
1566
 
1567
      if (r_type != RELOC_JMP_TBL
1568
          && ! info->shared
1569
          && ((h->flags & SUNOS_DEF_DYNAMIC) == 0
1570
              || (h->flags & SUNOS_DEF_REGULAR) != 0))
1571
        continue;
1572
 
1573
      if (r_type == RELOC_JMP_TBL
1574
          && ! info->shared
1575
          && (h->flags & SUNOS_DEF_DYNAMIC) == 0
1576
          && (h->flags & SUNOS_DEF_REGULAR) == 0)
1577
        {
1578
          /* This symbol is apparently undefined.  Don't do anything
1579
             here; just let the relocation routine report an undefined
1580
             symbol.  */
1581
          continue;
1582
        }
1583
 
1584
      if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
1585
        continue;
1586
 
1587
      if (dynobj == NULL)
1588
        {
1589
          if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1590
            return FALSE;
1591
          dynobj = sunos_hash_table (info)->dynobj;
1592
          splt = bfd_get_section_by_name (dynobj, ".plt");
1593
          sgot = bfd_get_section_by_name (dynobj, ".got");
1594
          srel = bfd_get_section_by_name (dynobj, ".dynrel");
1595
          BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1596
 
1597
          /* Make sure we have an initial entry in the .got table.  */
1598
          if (sgot->size == 0)
1599
            sgot->size = BYTES_IN_WORD;
1600
          sunos_hash_table (info)->got_needed = TRUE;
1601
        }
1602
 
1603
      BFD_ASSERT (r_type == RELOC_JMP_TBL
1604
                  || info->shared
1605
                  || (h->flags & SUNOS_REF_REGULAR) != 0);
1606
      BFD_ASSERT (r_type == RELOC_JMP_TBL
1607
                  || info->shared
1608
                  || h->plt_offset != 0
1609
                  || ((h->root.root.type == bfd_link_hash_defined
1610
                       || h->root.root.type == bfd_link_hash_defweak)
1611
                      ? (h->root.root.u.def.section->owner->flags
1612
                         & DYNAMIC) != 0
1613
                      : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0));
1614
 
1615
      /* This reloc is against a symbol defined only by a dynamic
1616
         object, or it is a jump table reloc from PIC compiled code.  */
1617
 
1618
      if (r_type != RELOC_JMP_TBL
1619
          && h->root.root.type == bfd_link_hash_undefined)
1620
        /* Presumably this symbol was marked as being undefined by
1621
           an earlier reloc.  */
1622
        srel->size += RELOC_EXT_SIZE;
1623
 
1624
      else if (r_type != RELOC_JMP_TBL
1625
               && (h->root.root.u.def.section->flags & SEC_CODE) == 0)
1626
        {
1627
          bfd *sub;
1628
 
1629
          /* This reloc is not in the .text section.  It must be
1630
             copied into the dynamic relocs.  We mark the symbol as
1631
             being undefined.  */
1632
          srel->size += RELOC_EXT_SIZE;
1633
          if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1634
            {
1635
              sub = h->root.root.u.def.section->owner;
1636
              h->root.root.type = bfd_link_hash_undefined;
1637
              h->root.root.u.undef.abfd = sub;
1638
            }
1639
        }
1640
      else
1641
        {
1642
          /* This symbol is in the .text section.  We must give it an
1643
             entry in the procedure linkage table, if we have not
1644
             already done so.  We change the definition of the symbol
1645
             to the .plt section; this will cause relocs against it to
1646
             be handled correctly.  */
1647
          if (h->plt_offset == 0)
1648
            {
1649
              if (splt->size == 0)
1650
                splt->size = SPARC_PLT_ENTRY_SIZE;
1651
              h->plt_offset = splt->size;
1652
 
1653
              if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1654
                {
1655
                  if (h->root.root.type == bfd_link_hash_undefined)
1656
                    h->root.root.type = bfd_link_hash_defined;
1657
                  h->root.root.u.def.section = splt;
1658
                  h->root.root.u.def.value = splt->size;
1659
                }
1660
 
1661
              splt->size += SPARC_PLT_ENTRY_SIZE;
1662
 
1663
              /* We will also need a dynamic reloc entry, unless this
1664
                 is a JMP_TBL reloc produced by linking PIC compiled
1665
                 code, and we are not making a shared library.  */
1666
              if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
1667
                srel->size += RELOC_EXT_SIZE;
1668
            }
1669
 
1670
          /* If we are creating a shared library, we need to copy over
1671
             any reloc other than a jump table reloc.  */
1672
          if (info->shared && r_type != RELOC_JMP_TBL)
1673
            srel->size += RELOC_EXT_SIZE;
1674
        }
1675
    }
1676
 
1677
  return TRUE;
1678
}
1679
 
1680
/* Scan the relocs for an input section.  */
1681
 
1682
static bfd_boolean
1683
sunos_scan_relocs (struct bfd_link_info *info,
1684
                   bfd *abfd,
1685
                   asection *sec,
1686
                   bfd_size_type rel_size)
1687
{
1688
  void * relocs;
1689
  void * free_relocs = NULL;
1690
 
1691
  if (rel_size == 0)
1692
    return TRUE;
1693
 
1694
  if (! info->keep_memory)
1695
    relocs = free_relocs = bfd_malloc (rel_size);
1696
  else
1697
    {
1698
      struct aout_section_data_struct *n;
1699
      bfd_size_type amt = sizeof (struct aout_section_data_struct);
1700
 
1701
      n = bfd_alloc (abfd, amt);
1702
      if (n == NULL)
1703
        relocs = NULL;
1704
      else
1705
        {
1706
          set_aout_section_data (sec, n);
1707
          relocs = bfd_malloc (rel_size);
1708
          aout_section_data (sec)->relocs = relocs;
1709
        }
1710
    }
1711
  if (relocs == NULL)
1712
    return FALSE;
1713
 
1714
  if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
1715
      || bfd_bread (relocs, rel_size, abfd) != rel_size)
1716
    goto error_return;
1717
 
1718
  if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE)
1719
    {
1720
      if (! sunos_scan_std_relocs (info, abfd, sec,
1721
                                   (struct reloc_std_external *) relocs,
1722
                                   rel_size))
1723
        goto error_return;
1724
    }
1725
  else
1726
    {
1727
      if (! sunos_scan_ext_relocs (info, abfd, sec,
1728
                                   (struct reloc_ext_external *) relocs,
1729
                                   rel_size))
1730
        goto error_return;
1731
    }
1732
 
1733
  if (free_relocs != NULL)
1734
    free (free_relocs);
1735
 
1736
  return TRUE;
1737
 
1738
 error_return:
1739
  if (free_relocs != NULL)
1740
    free (free_relocs);
1741
  return FALSE;
1742
}
1743
 
1744
/* Build the hash table of dynamic symbols, and to mark as written all
1745
   symbols from dynamic objects which we do not plan to write out.  */
1746
 
1747
static bfd_boolean
1748
sunos_scan_dynamic_symbol (struct sunos_link_hash_entry *h, void * data)
1749
{
1750
  struct bfd_link_info *info = (struct bfd_link_info *) data;
1751
 
1752
  if (h->root.root.type == bfd_link_hash_warning)
1753
    h = (struct sunos_link_hash_entry *) h->root.root.u.i.link;
1754
 
1755
  /* Set the written flag for symbols we do not want to write out as
1756
     part of the regular symbol table.  This is all symbols which are
1757
     not defined in a regular object file.  For some reason symbols
1758
     which are referenced by a regular object and defined by a dynamic
1759
     object do not seem to show up in the regular symbol table.  It is
1760
     possible for a symbol to have only SUNOS_REF_REGULAR set here, it
1761
     is an undefined symbol which was turned into a common symbol
1762
     because it was found in an archive object which was not included
1763
     in the link.  */
1764
  if ((h->flags & SUNOS_DEF_REGULAR) == 0
1765
      && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1766
      && strcmp (h->root.root.root.string, "__DYNAMIC") != 0)
1767
    h->root.written = TRUE;
1768
 
1769
  /* If this symbol is defined by a dynamic object and referenced by a
1770
     regular object, see whether we gave it a reasonable value while
1771
     scanning the relocs.  */
1772
  if ((h->flags & SUNOS_DEF_REGULAR) == 0
1773
      && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1774
      && (h->flags & SUNOS_REF_REGULAR) != 0)
1775
    {
1776
      if ((h->root.root.type == bfd_link_hash_defined
1777
           || h->root.root.type == bfd_link_hash_defweak)
1778
          && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1779
          && h->root.root.u.def.section->output_section == NULL)
1780
        {
1781
          bfd *sub;
1782
 
1783
          /* This symbol is currently defined in a dynamic section
1784
             which is not being put into the output file.  This
1785
             implies that there is no reloc against the symbol.  I'm
1786
             not sure why this case would ever occur.  In any case, we
1787
             change the symbol to be undefined.  */
1788
          sub = h->root.root.u.def.section->owner;
1789
          h->root.root.type = bfd_link_hash_undefined;
1790
          h->root.root.u.undef.abfd = sub;
1791
        }
1792
    }
1793
 
1794
  /* If this symbol is defined or referenced by a regular file, add it
1795
     to the dynamic symbols.  */
1796
  if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
1797
    {
1798
      asection *s;
1799
      size_t len;
1800
      bfd_byte *contents;
1801
      unsigned char *name;
1802
      unsigned long hash;
1803
      bfd *dynobj;
1804
 
1805
      BFD_ASSERT (h->dynindx == -2);
1806
 
1807
      dynobj = sunos_hash_table (info)->dynobj;
1808
 
1809
      h->dynindx = sunos_hash_table (info)->dynsymcount;
1810
      ++sunos_hash_table (info)->dynsymcount;
1811
 
1812
      len = strlen (h->root.root.root.string);
1813
 
1814
      /* We don't bother to construct a BFD hash table for the strings
1815
         which are the names of the dynamic symbols.  Using a hash
1816
         table for the regular symbols is beneficial, because the
1817
         regular symbols includes the debugging symbols, which have
1818
         long names and are often duplicated in several object files.
1819
         There are no debugging symbols in the dynamic symbols.  */
1820
      s = bfd_get_section_by_name (dynobj, ".dynstr");
1821
      BFD_ASSERT (s != NULL);
1822
      contents = bfd_realloc (s->contents, s->size + len + 1);
1823
      if (contents == NULL)
1824
        return FALSE;
1825
      s->contents = contents;
1826
 
1827
      h->dynstr_index = s->size;
1828
      strcpy ((char *) contents + s->size, h->root.root.root.string);
1829
      s->size += len + 1;
1830
 
1831
      /* Add it to the dynamic hash table.  */
1832
      name = (unsigned char *) h->root.root.root.string;
1833
      hash = 0;
1834
      while (*name != '\0')
1835
        hash = (hash << 1) + *name++;
1836
      hash &= 0x7fffffff;
1837
      hash %= sunos_hash_table (info)->bucketcount;
1838
 
1839
      s = bfd_get_section_by_name (dynobj, ".hash");
1840
      BFD_ASSERT (s != NULL);
1841
 
1842
      if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1)
1843
        PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE);
1844
      else
1845
        {
1846
          bfd_vma next;
1847
 
1848
          next = GET_WORD (dynobj,
1849
                           (s->contents
1850
                            + hash * HASH_ENTRY_SIZE
1851
                            + BYTES_IN_WORD));
1852
          PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE,
1853
                    s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
1854
          PUT_WORD (dynobj, h->dynindx, s->contents + s->size);
1855
          PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD);
1856
          s->size += HASH_ENTRY_SIZE;
1857
        }
1858
    }
1859
 
1860
  return TRUE;
1861
}
1862
 
1863
/* Set up the sizes and contents of the dynamic sections created in
1864
   sunos_add_dynamic_symbols.  This is called by the SunOS linker
1865
   emulation before_allocation routine.  We must set the sizes of the
1866
   sections before the linker sets the addresses of the various
1867
   sections.  This unfortunately requires reading all the relocs so
1868
   that we can work out which ones need to become dynamic relocs.  If
1869
   info->keep_memory is TRUE, we keep the relocs in memory; otherwise,
1870
   we discard them, and will read them again later.  */
1871
 
1872
bfd_boolean
1873
bfd_sunos_size_dynamic_sections (bfd *output_bfd,
1874
                                 struct bfd_link_info *info,
1875
                                 asection **sdynptr,
1876
                                 asection **sneedptr,
1877
                                 asection **srulesptr)
1878
{
1879
  bfd *dynobj;
1880
  bfd_size_type dynsymcount;
1881
  struct sunos_link_hash_entry *h;
1882
  asection *s;
1883
  size_t bucketcount;
1884
  bfd_size_type hashalloc;
1885
  size_t i;
1886
  bfd *sub;
1887
 
1888
  *sdynptr = NULL;
1889
  *sneedptr = NULL;
1890
  *srulesptr = NULL;
1891
 
1892
  if (info->relocatable)
1893
    return TRUE;
1894
 
1895
  if (output_bfd->xvec != &MY(vec))
1896
    return TRUE;
1897
 
1898
  /* Look through all the input BFD's and read their relocs.  It would
1899
     be better if we didn't have to do this, but there is no other way
1900
     to determine the number of dynamic relocs we need, and, more
1901
     importantly, there is no other way to know which symbols should
1902
     get an entry in the procedure linkage table.  */
1903
  for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
1904
    {
1905
      if ((sub->flags & DYNAMIC) == 0
1906
          && sub->xvec == output_bfd->xvec)
1907
        {
1908
          if (! sunos_scan_relocs (info, sub, obj_textsec (sub),
1909
                                   exec_hdr (sub)->a_trsize)
1910
              || ! sunos_scan_relocs (info, sub, obj_datasec (sub),
1911
                                      exec_hdr (sub)->a_drsize))
1912
            return FALSE;
1913
        }
1914
    }
1915
 
1916
  dynobj = sunos_hash_table (info)->dynobj;
1917
  dynsymcount = sunos_hash_table (info)->dynsymcount;
1918
 
1919
  /* If there were no dynamic objects in the link, and we don't need
1920
     to build a global offset table, there is nothing to do here.  */
1921
  if (! sunos_hash_table (info)->dynamic_sections_needed
1922
      && ! sunos_hash_table (info)->got_needed)
1923
    return TRUE;
1924
 
1925
  /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it.  */
1926
  h = sunos_link_hash_lookup (sunos_hash_table (info),
1927
                              "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE);
1928
  if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0)
1929
    {
1930
      h->flags |= SUNOS_DEF_REGULAR;
1931
      if (h->dynindx == -1)
1932
        {
1933
          ++sunos_hash_table (info)->dynsymcount;
1934
          h->dynindx = -2;
1935
        }
1936
      h->root.root.type = bfd_link_hash_defined;
1937
      h->root.root.u.def.section = bfd_get_section_by_name (dynobj, ".got");
1938
 
1939
      /* If the .got section is more than 0x1000 bytes, we set
1940
         __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section,
1941
         so that 13 bit relocations have a greater chance of working.  */
1942
      s = bfd_get_section_by_name (dynobj, ".got");
1943
      BFD_ASSERT (s != NULL);
1944
      if (s->size >= 0x1000)
1945
        h->root.root.u.def.value = 0x1000;
1946
      else
1947
        h->root.root.u.def.value = 0;
1948
 
1949
      sunos_hash_table (info)->got_base = h->root.root.u.def.value;
1950
    }
1951
 
1952
  /* If there are any shared objects in the link, then we need to set
1953
     up the dynamic linking information.  */
1954
  if (sunos_hash_table (info)->dynamic_sections_needed)
1955
    {
1956
      *sdynptr = bfd_get_section_by_name (dynobj, ".dynamic");
1957
 
1958
      /* The .dynamic section is always the same size.  */
1959
      s = *sdynptr;
1960
      BFD_ASSERT (s != NULL);
1961
      s->size = (sizeof (struct external_sun4_dynamic)
1962
                      + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE
1963
                      + sizeof (struct external_sun4_dynamic_link));
1964
 
1965
      /* Set the size of the .dynsym and .hash sections.  We counted
1966
         the number of dynamic symbols as we read the input files.  We
1967
         will build the dynamic symbol table (.dynsym) and the hash
1968
         table (.hash) when we build the final symbol table, because
1969
         until then we do not know the correct value to give the
1970
         symbols.  We build the dynamic symbol string table (.dynstr)
1971
         in a traversal of the symbol table using
1972
         sunos_scan_dynamic_symbol.  */
1973
      s = bfd_get_section_by_name (dynobj, ".dynsym");
1974
      BFD_ASSERT (s != NULL);
1975
      s->size = dynsymcount * sizeof (struct external_nlist);
1976
      s->contents = bfd_alloc (output_bfd, s->size);
1977
      if (s->contents == NULL && s->size != 0)
1978
        return FALSE;
1979
 
1980
      /* The number of buckets is just the number of symbols divided
1981
         by four.  To compute the final size of the hash table, we
1982
         must actually compute the hash table.  Normally we need
1983
         exactly as many entries in the hash table as there are
1984
         dynamic symbols, but if some of the buckets are not used we
1985
         will need additional entries.  In the worst case, every
1986
         symbol will hash to the same bucket, and we will need
1987
         BUCKETCOUNT - 1 extra entries.  */
1988
      if (dynsymcount >= 4)
1989
        bucketcount = dynsymcount / 4;
1990
      else if (dynsymcount > 0)
1991
        bucketcount = dynsymcount;
1992
      else
1993
        bucketcount = 1;
1994
      s = bfd_get_section_by_name (dynobj, ".hash");
1995
      BFD_ASSERT (s != NULL);
1996
      hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE;
1997
      s->contents = bfd_zalloc (dynobj, hashalloc);
1998
      if (s->contents == NULL && dynsymcount > 0)
1999
        return FALSE;
2000
      for (i = 0; i < bucketcount; i++)
2001
        PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE);
2002
      s->size = bucketcount * HASH_ENTRY_SIZE;
2003
 
2004
      sunos_hash_table (info)->bucketcount = bucketcount;
2005
 
2006
      /* Scan all the symbols, place them in the dynamic symbol table,
2007
         and build the dynamic hash table.  We reuse dynsymcount as a
2008
         counter for the number of symbols we have added so far.  */
2009
      sunos_hash_table (info)->dynsymcount = 0;
2010
      sunos_link_hash_traverse (sunos_hash_table (info),
2011
                                sunos_scan_dynamic_symbol,
2012
                                (void *) info);
2013
      BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount);
2014
 
2015
      /* The SunOS native linker seems to align the total size of the
2016
         symbol strings to a multiple of 8.  I don't know if this is
2017
         important, but it can't hurt much.  */
2018
      s = bfd_get_section_by_name (dynobj, ".dynstr");
2019
      BFD_ASSERT (s != NULL);
2020
      if ((s->size & 7) != 0)
2021
        {
2022
          bfd_size_type add;
2023
          bfd_byte *contents;
2024
 
2025
          add = 8 - (s->size & 7);
2026
          contents = bfd_realloc (s->contents, s->size + add);
2027
          if (contents == NULL)
2028
            return FALSE;
2029
          memset (contents + s->size, 0, (size_t) add);
2030
          s->contents = contents;
2031
          s->size += add;
2032
        }
2033
    }
2034
 
2035
  /* Now that we have worked out the sizes of the procedure linkage
2036
     table and the dynamic relocs, allocate storage for them.  */
2037
  s = bfd_get_section_by_name (dynobj, ".plt");
2038
  BFD_ASSERT (s != NULL);
2039
  if (s->size != 0)
2040
    {
2041
      s->contents = bfd_alloc (dynobj, s->size);
2042
      if (s->contents == NULL)
2043
        return FALSE;
2044
 
2045
      /* Fill in the first entry in the table.  */
2046
      switch (bfd_get_arch (dynobj))
2047
        {
2048
        case bfd_arch_sparc:
2049
          memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE);
2050
          break;
2051
 
2052
        case bfd_arch_m68k:
2053
          memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE);
2054
          break;
2055
 
2056
        default:
2057
          abort ();
2058
        }
2059
    }
2060
 
2061
  s = bfd_get_section_by_name (dynobj, ".dynrel");
2062
  if (s->size != 0)
2063
    {
2064
      s->contents = bfd_alloc (dynobj, s->size);
2065
      if (s->contents == NULL)
2066
        return FALSE;
2067
    }
2068
  /* We use the reloc_count field to keep track of how many of the
2069
     relocs we have output so far.  */
2070
  s->reloc_count = 0;
2071
 
2072
  /* Make space for the global offset table.  */
2073
  s = bfd_get_section_by_name (dynobj, ".got");
2074
  s->contents = bfd_alloc (dynobj, s->size);
2075
  if (s->contents == NULL)
2076
    return FALSE;
2077
 
2078
  *sneedptr = bfd_get_section_by_name (dynobj, ".need");
2079
  *srulesptr = bfd_get_section_by_name (dynobj, ".rules");
2080
 
2081
  return TRUE;
2082
}
2083
 
2084
/* Link a dynamic object.  We actually don't have anything to do at
2085
   this point.  This entry point exists to prevent the regular linker
2086
   code from doing anything with the object.  */
2087
 
2088
static bfd_boolean
2089
sunos_link_dynamic_object (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2090
                           bfd *abfd ATTRIBUTE_UNUSED)
2091
{
2092
  return TRUE;
2093
}
2094
 
2095
/* Write out a dynamic symbol.  This is called by the final traversal
2096
   over the symbol table.  */
2097
 
2098
static bfd_boolean
2099
sunos_write_dynamic_symbol (bfd *output_bfd,
2100
                            struct bfd_link_info *info,
2101
                            struct aout_link_hash_entry *harg)
2102
{
2103
  struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
2104
  int type;
2105
  bfd_vma val;
2106
  asection *s;
2107
  struct external_nlist *outsym;
2108
 
2109
  /* If this symbol is in the procedure linkage table, fill in the
2110
     table entry.  */
2111
  if (h->plt_offset != 0)
2112
    {
2113
      bfd *dynobj;
2114
      asection *splt;
2115
      bfd_byte *p;
2116
      bfd_vma r_address;
2117
 
2118
      dynobj = sunos_hash_table (info)->dynobj;
2119
      splt = bfd_get_section_by_name (dynobj, ".plt");
2120
      p = splt->contents + h->plt_offset;
2121
 
2122
      s = bfd_get_section_by_name (dynobj, ".dynrel");
2123
 
2124
      r_address = (splt->output_section->vma
2125
                   + splt->output_offset
2126
                   + h->plt_offset);
2127
 
2128
      switch (bfd_get_arch (output_bfd))
2129
        {
2130
        case bfd_arch_sparc:
2131
          if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
2132
            {
2133
              bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p);
2134
              bfd_put_32 (output_bfd,
2135
                          (SPARC_PLT_ENTRY_WORD1
2136
                           + (((- (h->plt_offset + 4) >> 2)
2137
                               & 0x3fffffff))),
2138
                          p + 4);
2139
              bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count,
2140
                          p + 8);
2141
            }
2142
          else
2143
            {
2144
              val = (h->root.root.u.def.section->output_section->vma
2145
                     + h->root.root.u.def.section->output_offset
2146
                     + h->root.root.u.def.value);
2147
              bfd_put_32 (output_bfd,
2148
                          SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff),
2149
                          p);
2150
              bfd_put_32 (output_bfd,
2151
                          SPARC_PLT_PIC_WORD1 + (val & 0x3ff),
2152
                          p + 4);
2153
              bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8);
2154
            }
2155
          break;
2156
 
2157
        case bfd_arch_m68k:
2158
          if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0)
2159
            abort ();
2160
          bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p);
2161
          bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2);
2162
          bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6);
2163
          r_address += 2;
2164
          break;
2165
 
2166
        default:
2167
          abort ();
2168
        }
2169
 
2170
      /* We also need to add a jump table reloc, unless this is the
2171
         result of a JMP_TBL reloc from PIC compiled code.  */
2172
      if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
2173
        {
2174
          BFD_ASSERT (h->dynindx >= 0);
2175
          BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
2176
                      < s->size);
2177
          p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd);
2178
          if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE)
2179
            {
2180
              struct reloc_std_external *srel;
2181
 
2182
              srel = (struct reloc_std_external *) p;
2183
              PUT_WORD (output_bfd, r_address, srel->r_address);
2184
              if (bfd_header_big_endian (output_bfd))
2185
                {
2186
                  srel->r_index[0] = (bfd_byte) (h->dynindx >> 16);
2187
                  srel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2188
                  srel->r_index[2] = (bfd_byte) (h->dynindx);
2189
                  srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG
2190
                                     | RELOC_STD_BITS_JMPTABLE_BIG);
2191
                }
2192
              else
2193
                {
2194
                  srel->r_index[2] = (bfd_byte) (h->dynindx >> 16);
2195
                  srel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2196
                  srel->r_index[0] = (bfd_byte)h->dynindx;
2197
                  srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE
2198
                                     | RELOC_STD_BITS_JMPTABLE_LITTLE);
2199
                }
2200
            }
2201
          else
2202
            {
2203
              struct reloc_ext_external *erel;
2204
 
2205
              erel = (struct reloc_ext_external *) p;
2206
              PUT_WORD (output_bfd, r_address, erel->r_address);
2207
              if (bfd_header_big_endian (output_bfd))
2208
                {
2209
                  erel->r_index[0] = (bfd_byte) (h->dynindx >> 16);
2210
                  erel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2211
                  erel->r_index[2] = (bfd_byte)h->dynindx;
2212
                  erel->r_type[0] =
2213
                    (RELOC_EXT_BITS_EXTERN_BIG
2214
                     | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG));
2215
                }
2216
              else
2217
                {
2218
                  erel->r_index[2] = (bfd_byte) (h->dynindx >> 16);
2219
                  erel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2220
                  erel->r_index[0] = (bfd_byte)h->dynindx;
2221
                  erel->r_type[0] =
2222
                    (RELOC_EXT_BITS_EXTERN_LITTLE
2223
                     | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2224
                }
2225
              PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend);
2226
            }
2227
 
2228
          ++s->reloc_count;
2229
        }
2230
    }
2231
 
2232
  /* If this is not a dynamic symbol, we don't have to do anything
2233
     else.  We only check this after handling the PLT entry, because
2234
     we can have a PLT entry for a nondynamic symbol when linking PIC
2235
     compiled code from a regular object.  */
2236
  if (h->dynindx < 0)
2237
    return TRUE;
2238
 
2239
  switch (h->root.root.type)
2240
    {
2241
    default:
2242
    case bfd_link_hash_new:
2243
      abort ();
2244
      /* Avoid variable not initialized warnings.  */
2245
      return TRUE;
2246
    case bfd_link_hash_undefined:
2247
      type = N_UNDF | N_EXT;
2248
      val = 0;
2249
      break;
2250
    case bfd_link_hash_defined:
2251
    case bfd_link_hash_defweak:
2252
      {
2253
        asection *sec;
2254
        asection *output_section;
2255
 
2256
        sec = h->root.root.u.def.section;
2257
        output_section = sec->output_section;
2258
        BFD_ASSERT (bfd_is_abs_section (output_section)
2259
                    || output_section->owner == output_bfd);
2260
        if (h->plt_offset != 0
2261
            && (h->flags & SUNOS_DEF_REGULAR) == 0)
2262
          {
2263
            type = N_UNDF | N_EXT;
2264
            val = 0;
2265
          }
2266
        else
2267
          {
2268
            if (output_section == obj_textsec (output_bfd))
2269
              type = (h->root.root.type == bfd_link_hash_defined
2270
                      ? N_TEXT
2271
                      : N_WEAKT);
2272
            else if (output_section == obj_datasec (output_bfd))
2273
              type = (h->root.root.type == bfd_link_hash_defined
2274
                      ? N_DATA
2275
                      : N_WEAKD);
2276
            else if (output_section == obj_bsssec (output_bfd))
2277
              type = (h->root.root.type == bfd_link_hash_defined
2278
                      ? N_BSS
2279
                      : N_WEAKB);
2280
            else
2281
              type = (h->root.root.type == bfd_link_hash_defined
2282
                      ? N_ABS
2283
                      : N_WEAKA);
2284
            type |= N_EXT;
2285
            val = (h->root.root.u.def.value
2286
                   + output_section->vma
2287
                   + sec->output_offset);
2288
          }
2289
      }
2290
      break;
2291
    case bfd_link_hash_common:
2292
      type = N_UNDF | N_EXT;
2293
      val = h->root.root.u.c.size;
2294
      break;
2295
    case bfd_link_hash_undefweak:
2296
      type = N_WEAKU;
2297
      val = 0;
2298
      break;
2299
    case bfd_link_hash_indirect:
2300
    case bfd_link_hash_warning:
2301
      /* FIXME: Ignore these for now.  The circumstances under which
2302
         they should be written out are not clear to me.  */
2303
      return TRUE;
2304
    }
2305
 
2306
  s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynsym");
2307
  BFD_ASSERT (s != NULL);
2308
  outsym = ((struct external_nlist *)
2309
            (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE));
2310
 
2311
  H_PUT_8 (output_bfd, type, outsym->e_type);
2312
  H_PUT_8 (output_bfd, 0, outsym->e_other);
2313
 
2314
  /* FIXME: The native linker doesn't use 0 for desc.  It seems to use
2315
     one less than the desc value in the shared library, although that
2316
     seems unlikely.  */
2317
  H_PUT_16 (output_bfd, 0, outsym->e_desc);
2318
 
2319
  PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx);
2320
  PUT_WORD (output_bfd, val, outsym->e_value);
2321
 
2322
  return TRUE;
2323
}
2324
 
2325
/* This is called for each reloc against an external symbol.  If this
2326
   is a reloc which are are going to copy as a dynamic reloc, then
2327
   copy it over, and tell the caller to not bother processing this
2328
   reloc.  */
2329
 
2330
static bfd_boolean
2331
sunos_check_dynamic_reloc (struct bfd_link_info *info,
2332
                           bfd *input_bfd,
2333
                           asection *input_section,
2334
                           struct aout_link_hash_entry *harg,
2335
                           void * reloc,
2336
                           bfd_byte *contents ATTRIBUTE_UNUSED,
2337
                           bfd_boolean *skip,
2338
                           bfd_vma *relocationp)
2339
{
2340
  struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
2341
  bfd *dynobj;
2342
  bfd_boolean baserel;
2343
  bfd_boolean jmptbl;
2344
  bfd_boolean pcrel;
2345
  asection *s;
2346
  bfd_byte *p;
2347
  long indx;
2348
 
2349
  *skip = FALSE;
2350
 
2351
  dynobj = sunos_hash_table (info)->dynobj;
2352
 
2353
  if (h != NULL
2354
      && h->plt_offset != 0
2355
      && (info->shared
2356
          || (h->flags & SUNOS_DEF_REGULAR) == 0))
2357
    {
2358
      asection *splt;
2359
 
2360
      /* Redirect the relocation to the PLT entry.  */
2361
      splt = bfd_get_section_by_name (dynobj, ".plt");
2362
      *relocationp = (splt->output_section->vma
2363
                      + splt->output_offset
2364
                      + h->plt_offset);
2365
    }
2366
 
2367
  if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
2368
    {
2369
      struct reloc_std_external *srel;
2370
 
2371
      srel = (struct reloc_std_external *) reloc;
2372
      if (bfd_header_big_endian (input_bfd))
2373
        {
2374
          baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2375
          jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2376
          pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2377
        }
2378
      else
2379
        {
2380
          baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2381
          jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2382
          pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2383
        }
2384
    }
2385
  else
2386
    {
2387
      struct reloc_ext_external *erel;
2388
      int r_type;
2389
 
2390
      erel = (struct reloc_ext_external *) reloc;
2391
      if (bfd_header_big_endian (input_bfd))
2392
        r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2393
                  >> RELOC_EXT_BITS_TYPE_SH_BIG);
2394
      else
2395
        r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2396
                  >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2397
      baserel = (r_type == RELOC_BASE10
2398
                 || r_type == RELOC_BASE13
2399
                 || r_type == RELOC_BASE22);
2400
      jmptbl = r_type == RELOC_JMP_TBL;
2401
      pcrel = (r_type == RELOC_DISP8
2402
               || r_type == RELOC_DISP16
2403
               || r_type == RELOC_DISP32
2404
               || r_type == RELOC_WDISP30
2405
               || r_type == RELOC_WDISP22);
2406
      /* We don't consider the PC10 and PC22 types to be PC relative,
2407
         because they are pcrel_offset.  */
2408
    }
2409
 
2410
  if (baserel)
2411
    {
2412
      bfd_vma *got_offsetp;
2413
      asection *sgot;
2414
 
2415
      if (h != NULL)
2416
        got_offsetp = &h->got_offset;
2417
      else if (adata (input_bfd).local_got_offsets == NULL)
2418
        got_offsetp = NULL;
2419
      else
2420
        {
2421
          struct reloc_std_external *srel;
2422
          int r_index;
2423
 
2424
          srel = (struct reloc_std_external *) reloc;
2425
          if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
2426
            {
2427
              if (bfd_header_big_endian (input_bfd))
2428
                r_index = ((srel->r_index[0] << 16)
2429
                           | (srel->r_index[1] << 8)
2430
                           | srel->r_index[2]);
2431
              else
2432
                r_index = ((srel->r_index[2] << 16)
2433
                           | (srel->r_index[1] << 8)
2434
                           | srel->r_index[0]);
2435
            }
2436
          else
2437
            {
2438
              struct reloc_ext_external *erel;
2439
 
2440
              erel = (struct reloc_ext_external *) reloc;
2441
              if (bfd_header_big_endian (input_bfd))
2442
                r_index = ((erel->r_index[0] << 16)
2443
                           | (erel->r_index[1] << 8)
2444
                           | erel->r_index[2]);
2445
              else
2446
                r_index = ((erel->r_index[2] << 16)
2447
                           | (erel->r_index[1] << 8)
2448
                           | erel->r_index[0]);
2449
            }
2450
 
2451
          got_offsetp = adata (input_bfd).local_got_offsets + r_index;
2452
        }
2453
 
2454
      BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0);
2455
 
2456
      sgot = bfd_get_section_by_name (dynobj, ".got");
2457
 
2458
      /* We set the least significant bit to indicate whether we have
2459
         already initialized the GOT entry.  */
2460
      if ((*got_offsetp & 1) == 0)
2461
        {
2462
          if (h == NULL
2463
              || (! info->shared
2464
                  && ((h->flags & SUNOS_DEF_DYNAMIC) == 0
2465
                      || (h->flags & SUNOS_DEF_REGULAR) != 0)))
2466
            PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp);
2467
          else
2468
            PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp);
2469
 
2470
          if (info->shared
2471
              || (h != NULL
2472
                  && (h->flags & SUNOS_DEF_DYNAMIC) != 0
2473
                  && (h->flags & SUNOS_DEF_REGULAR) == 0))
2474
            {
2475
              /* We need to create a GLOB_DAT or 32 reloc to tell the
2476
                 dynamic linker to fill in this entry in the table.  */
2477
 
2478
              s = bfd_get_section_by_name (dynobj, ".dynrel");
2479
              BFD_ASSERT (s != NULL);
2480
              BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
2481
                          < s->size);
2482
 
2483
              p = (s->contents
2484
                   + s->reloc_count * obj_reloc_entry_size (dynobj));
2485
 
2486
              if (h != NULL)
2487
                indx = h->dynindx;
2488
              else
2489
                indx = 0;
2490
 
2491
              if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE)
2492
                {
2493
                  struct reloc_std_external *srel;
2494
 
2495
                  srel = (struct reloc_std_external *) p;
2496
                  PUT_WORD (dynobj,
2497
                            (*got_offsetp
2498
                             + sgot->output_section->vma
2499
                             + sgot->output_offset),
2500
                            srel->r_address);
2501
                  if (bfd_header_big_endian (dynobj))
2502
                    {
2503
                      srel->r_index[0] = (bfd_byte) (indx >> 16);
2504
                      srel->r_index[1] = (bfd_byte) (indx >> 8);
2505
                      srel->r_index[2] = (bfd_byte)indx;
2506
                      if (h == NULL)
2507
                        srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG;
2508
                      else
2509
                        srel->r_type[0] =
2510
                          (RELOC_STD_BITS_EXTERN_BIG
2511
                           | RELOC_STD_BITS_BASEREL_BIG
2512
                           | RELOC_STD_BITS_RELATIVE_BIG
2513
                           | (2 << RELOC_STD_BITS_LENGTH_SH_BIG));
2514
                    }
2515
                  else
2516
                    {
2517
                      srel->r_index[2] = (bfd_byte) (indx >> 16);
2518
                      srel->r_index[1] = (bfd_byte) (indx >> 8);
2519
                      srel->r_index[0] = (bfd_byte)indx;
2520
                      if (h == NULL)
2521
                        srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE;
2522
                      else
2523
                        srel->r_type[0] =
2524
                          (RELOC_STD_BITS_EXTERN_LITTLE
2525
                           | RELOC_STD_BITS_BASEREL_LITTLE
2526
                           | RELOC_STD_BITS_RELATIVE_LITTLE
2527
                           | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2528
                    }
2529
                }
2530
              else
2531
                {
2532
                  struct reloc_ext_external *erel;
2533
 
2534
                  erel = (struct reloc_ext_external *) p;
2535
                  PUT_WORD (dynobj,
2536
                            (*got_offsetp
2537
                             + sgot->output_section->vma
2538
                             + sgot->output_offset),
2539
                            erel->r_address);
2540
                  if (bfd_header_big_endian (dynobj))
2541
                    {
2542
                      erel->r_index[0] = (bfd_byte) (indx >> 16);
2543
                      erel->r_index[1] = (bfd_byte) (indx >> 8);
2544
                      erel->r_index[2] = (bfd_byte)indx;
2545
                      if (h == NULL)
2546
                        erel->r_type[0] =
2547
                          RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG;
2548
                      else
2549
                        erel->r_type[0] =
2550
                          (RELOC_EXT_BITS_EXTERN_BIG
2551
                           | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG));
2552
                    }
2553
                  else
2554
                    {
2555
                      erel->r_index[2] = (bfd_byte) (indx >> 16);
2556
                      erel->r_index[1] = (bfd_byte) (indx >> 8);
2557
                      erel->r_index[0] = (bfd_byte)indx;
2558
                      if (h == NULL)
2559
                        erel->r_type[0] =
2560
                          RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE;
2561
                      else
2562
                        erel->r_type[0] =
2563
                          (RELOC_EXT_BITS_EXTERN_LITTLE
2564
                           | (RELOC_GLOB_DAT
2565
                              << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2566
                    }
2567
                  PUT_WORD (dynobj, 0, erel->r_addend);
2568
                }
2569
 
2570
              ++s->reloc_count;
2571
            }
2572
 
2573
          *got_offsetp |= 1;
2574
        }
2575
 
2576
      *relocationp = (sgot->vma
2577
                      + (*got_offsetp &~ (bfd_vma) 1)
2578
                      - sunos_hash_table (info)->got_base);
2579
 
2580
      /* There is nothing else to do for a base relative reloc.  */
2581
      return TRUE;
2582
    }
2583
 
2584
  if (! sunos_hash_table (info)->dynamic_sections_needed)
2585
    return TRUE;
2586
  if (! info->shared)
2587
    {
2588
      if (h == NULL
2589
          || h->dynindx == -1
2590
          || h->root.root.type != bfd_link_hash_undefined
2591
          || (h->flags & SUNOS_DEF_REGULAR) != 0
2592
          || (h->flags & SUNOS_DEF_DYNAMIC) == 0
2593
          || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0)
2594
        return TRUE;
2595
    }
2596
  else
2597
    {
2598
      if (h != NULL
2599
          && (h->dynindx == -1
2600
              || jmptbl
2601
              || strcmp (h->root.root.root.string,
2602
                         "__GLOBAL_OFFSET_TABLE_") == 0))
2603
        return TRUE;
2604
    }
2605
 
2606
  /* It looks like this is a reloc we are supposed to copy.  */
2607
 
2608
  s = bfd_get_section_by_name (dynobj, ".dynrel");
2609
  BFD_ASSERT (s != NULL);
2610
  BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size);
2611
 
2612
  p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj);
2613
 
2614
  /* Copy the reloc over.  */
2615
  memcpy (p, reloc, obj_reloc_entry_size (dynobj));
2616
 
2617
  if (h != NULL)
2618
    indx = h->dynindx;
2619
  else
2620
    indx = 0;
2621
 
2622
  /* Adjust the address and symbol index.  */
2623
  if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE)
2624
    {
2625
      struct reloc_std_external *srel;
2626
 
2627
      srel = (struct reloc_std_external *) p;
2628
      PUT_WORD (dynobj,
2629
                (GET_WORD (dynobj, srel->r_address)
2630
                 + input_section->output_section->vma
2631
                 + input_section->output_offset),
2632
                srel->r_address);
2633
      if (bfd_header_big_endian (dynobj))
2634
        {
2635
          srel->r_index[0] = (bfd_byte) (indx >> 16);
2636
          srel->r_index[1] = (bfd_byte) (indx >> 8);
2637
          srel->r_index[2] = (bfd_byte)indx;
2638
        }
2639
      else
2640
        {
2641
          srel->r_index[2] = (bfd_byte) (indx >> 16);
2642
          srel->r_index[1] = (bfd_byte) (indx >> 8);
2643
          srel->r_index[0] = (bfd_byte)indx;
2644
        }
2645
      /* FIXME: We may have to change the addend for a PC relative
2646
         reloc.  */
2647
    }
2648
  else
2649
    {
2650
      struct reloc_ext_external *erel;
2651
 
2652
      erel = (struct reloc_ext_external *) p;
2653
      PUT_WORD (dynobj,
2654
                (GET_WORD (dynobj, erel->r_address)
2655
                 + input_section->output_section->vma
2656
                 + input_section->output_offset),
2657
                erel->r_address);
2658
      if (bfd_header_big_endian (dynobj))
2659
        {
2660
          erel->r_index[0] = (bfd_byte) (indx >> 16);
2661
          erel->r_index[1] = (bfd_byte) (indx >> 8);
2662
          erel->r_index[2] = (bfd_byte)indx;
2663
        }
2664
      else
2665
        {
2666
          erel->r_index[2] = (bfd_byte) (indx >> 16);
2667
          erel->r_index[1] = (bfd_byte) (indx >> 8);
2668
          erel->r_index[0] = (bfd_byte)indx;
2669
        }
2670
      if (pcrel && h != NULL)
2671
        {
2672
          /* Adjust the addend for the change in address.  */
2673
          PUT_WORD (dynobj,
2674
                    (GET_WORD (dynobj, erel->r_addend)
2675
                     - (input_section->output_section->vma
2676
                        + input_section->output_offset
2677
                        - input_section->vma)),
2678
                    erel->r_addend);
2679
        }
2680
    }
2681
 
2682
  ++s->reloc_count;
2683
 
2684
  if (h != NULL)
2685
    *skip = TRUE;
2686
 
2687
  return TRUE;
2688
}
2689
 
2690
/* Finish up the dynamic linking information.  */
2691
 
2692
static bfd_boolean
2693
sunos_finish_dynamic_link (bfd *abfd, struct bfd_link_info *info)
2694
{
2695
  bfd *dynobj;
2696
  asection *o;
2697
  asection *s;
2698
  asection *sdyn;
2699
 
2700
  if (! sunos_hash_table (info)->dynamic_sections_needed
2701
      && ! sunos_hash_table (info)->got_needed)
2702
    return TRUE;
2703
 
2704
  dynobj = sunos_hash_table (info)->dynobj;
2705
 
2706
  sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2707
  BFD_ASSERT (sdyn != NULL);
2708
 
2709
  /* Finish up the .need section.  The linker emulation code filled it
2710
     in, but with offsets from the start of the section instead of
2711
     real addresses.  Now that we know the section location, we can
2712
     fill in the final values.  */
2713
  s = bfd_get_section_by_name (dynobj, ".need");
2714
  if (s != NULL && s->size != 0)
2715
    {
2716
      file_ptr filepos;
2717
      bfd_byte *p;
2718
 
2719
      filepos = s->output_section->filepos + s->output_offset;
2720
      p = s->contents;
2721
      while (1)
2722
        {
2723
          bfd_vma val;
2724
 
2725
          PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p);
2726
          val = GET_WORD (dynobj, p + 12);
2727
          if (val == 0)
2728
            break;
2729
          PUT_WORD (dynobj, val + filepos, p + 12);
2730
          p += 16;
2731
        }
2732
    }
2733
 
2734
  /* The first entry in the .got section is the address of the
2735
     dynamic information, unless this is a shared library.  */
2736
  s = bfd_get_section_by_name (dynobj, ".got");
2737
  BFD_ASSERT (s != NULL);
2738
  if (info->shared || sdyn->size == 0)
2739
    PUT_WORD (dynobj, 0, s->contents);
2740
  else
2741
    PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset,
2742
              s->contents);
2743
 
2744
  for (o = dynobj->sections; o != NULL; o = o->next)
2745
    {
2746
      if ((o->flags & SEC_HAS_CONTENTS) != 0
2747
          && o->contents != NULL)
2748
        {
2749
          BFD_ASSERT (o->output_section != NULL
2750
                      && o->output_section->owner == abfd);
2751
          if (! bfd_set_section_contents (abfd, o->output_section,
2752
                                          o->contents,
2753
                                          (file_ptr) o->output_offset,
2754
                                          o->size))
2755
            return FALSE;
2756
        }
2757
    }
2758
 
2759
  if (sdyn->size > 0)
2760
    {
2761
      struct external_sun4_dynamic esd;
2762
      struct external_sun4_dynamic_link esdl;
2763
      file_ptr pos;
2764
 
2765
      /* Finish up the dynamic link information.  */
2766
      PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version);
2767
      PUT_WORD (dynobj,
2768
                sdyn->output_section->vma + sdyn->output_offset + sizeof esd,
2769
                esd.ldd);
2770
      PUT_WORD (dynobj,
2771
                (sdyn->output_section->vma
2772
                 + sdyn->output_offset
2773
                 + sizeof esd
2774
                 + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE),
2775
                esd.ld);
2776
 
2777
      if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd,
2778
                                      (file_ptr) sdyn->output_offset,
2779
                                      (bfd_size_type) sizeof esd))
2780
        return FALSE;
2781
 
2782
      PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded);
2783
 
2784
      s = bfd_get_section_by_name (dynobj, ".need");
2785
      if (s == NULL || s->size == 0)
2786
        PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need);
2787
      else
2788
        PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2789
                  esdl.ld_need);
2790
 
2791
      s = bfd_get_section_by_name (dynobj, ".rules");
2792
      if (s == NULL || s->size == 0)
2793
        PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules);
2794
      else
2795
        PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2796
                  esdl.ld_rules);
2797
 
2798
      s = bfd_get_section_by_name (dynobj, ".got");
2799
      BFD_ASSERT (s != NULL);
2800
      PUT_WORD (dynobj, s->output_section->vma + s->output_offset,
2801
                esdl.ld_got);
2802
 
2803
      s = bfd_get_section_by_name (dynobj, ".plt");
2804
      BFD_ASSERT (s != NULL);
2805
      PUT_WORD (dynobj, s->output_section->vma + s->output_offset,
2806
                esdl.ld_plt);
2807
      PUT_WORD (dynobj, s->size, esdl.ld_plt_sz);
2808
 
2809
      s = bfd_get_section_by_name (dynobj, ".dynrel");
2810
      BFD_ASSERT (s != NULL);
2811
      BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
2812
                  == s->size);
2813
      PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2814
                esdl.ld_rel);
2815
 
2816
      s = bfd_get_section_by_name (dynobj, ".hash");
2817
      BFD_ASSERT (s != NULL);
2818
      PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2819
                esdl.ld_hash);
2820
 
2821
      s = bfd_get_section_by_name (dynobj, ".dynsym");
2822
      BFD_ASSERT (s != NULL);
2823
      PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2824
                esdl.ld_stab);
2825
 
2826
      PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash);
2827
 
2828
      PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount,
2829
                esdl.ld_buckets);
2830
 
2831
      s = bfd_get_section_by_name (dynobj, ".dynstr");
2832
      BFD_ASSERT (s != NULL);
2833
      PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2834
                esdl.ld_symbols);
2835
      PUT_WORD (dynobj, s->size, esdl.ld_symb_size);
2836
 
2837
      /* The size of the text area is the size of the .text section
2838
         rounded up to a page boundary.  FIXME: Should the page size be
2839
         conditional on something?  */
2840
      PUT_WORD (dynobj,
2841
                BFD_ALIGN (obj_textsec (abfd)->size, 0x2000),
2842
                esdl.ld_text);
2843
 
2844
      pos = sdyn->output_offset;
2845
      pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE;
2846
      if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl,
2847
                                      pos, (bfd_size_type) sizeof esdl))
2848
        return FALSE;
2849
 
2850
      abfd->flags |= DYNAMIC;
2851
    }
2852
 
2853
  return TRUE;
2854
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.