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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [ld/] [emultempl/] [ppc64elf.em] - Blame information for rev 158

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1 145 khays
# This shell script emits a C file. -*- C -*-
2
# Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
3
# Free Software Foundation, Inc.
4
#
5
# This file is part of the GNU Binutils.
6
#
7
# This program is free software; you can redistribute it and/or modify
8
# it under the terms of the GNU General Public License as published by
9
# the Free Software Foundation; either version 3 of the License, or
10
# (at your option) any later version.
11
#
12
# This program is distributed in the hope that it will be useful,
13
# but WITHOUT ANY WARRANTY; without even the implied warranty of
14
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
# GNU General Public License for more details.
16
#
17
# You should have received a copy of the GNU General Public License
18
# along with this program; if not, write to the Free Software
19
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20
# MA 02110-1301, USA.
21
#
22
 
23
# This file is sourced from elf32.em, and defines extra powerpc64-elf
24
# specific routines.
25
#
26
fragment <
27
 
28
#include "ldctor.h"
29
#include "libbfd.h"
30
#include "elf-bfd.h"
31
#include "elf64-ppc.h"
32
 
33
/* Fake input file for stubs.  */
34
static lang_input_statement_type *stub_file;
35
static int stub_added = 0;
36
 
37
/* Whether we need to call ppc_layout_sections_again.  */
38
static int need_laying_out = 0;
39
 
40
/* Maximum size of a group of input sections that can be handled by
41
   one stub section.  A value of +/-1 indicates the bfd back-end
42
   should use a suitable default size.  */
43
static bfd_signed_vma group_size = 1;
44
 
45
/* Whether to add ".foo" entries for each "foo" in a version script.  */
46
static int dotsyms = 1;
47
 
48
/* Whether to run tls optimization.  */
49
static int no_tls_opt = 0;
50
static int no_tls_get_addr_opt = 0;
51
 
52
/* Whether to run opd optimization.  */
53
static int no_opd_opt = 0;
54
 
55
/* Whether to run toc optimization.  */
56
static int no_toc_opt = 0;
57
 
58
/* Whether to allow multiple toc sections.  */
59
static int no_multi_toc = 0;
60
 
61
/* Whether to sort input toc and got sections.  */
62
static int no_toc_sort = 0;
63
 
64 157 khays
/* Set if PLT call stubs should load r11.  */
65
static int plt_static_chain = 0;
66
 
67 145 khays
/* Whether to emit symbols for stubs.  */
68
static int emit_stub_syms = -1;
69
 
70
static asection *toc_section = 0;
71
 
72
/* Whether to canonicalize .opd so that there are no overlapping
73
   .opd entries.  */
74
static int non_overlapping_opd = 0;
75
 
76
/* This is called before the input files are opened.  We create a new
77
   fake input file to hold the stub sections.  */
78
 
79
static void
80
ppc_create_output_section_statements (void)
81
{
82
  if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
83
        && elf_object_id (link_info.output_bfd) == PPC64_ELF_DATA))
84
    return;
85
 
86
  link_info.wrap_char = '.';
87
 
88
  stub_file = lang_add_input_file ("linker stubs",
89
                                   lang_input_file_is_fake_enum,
90
                                   NULL);
91
  stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd);
92
  if (stub_file->the_bfd == NULL
93
      || !bfd_set_arch_mach (stub_file->the_bfd,
94
                             bfd_get_arch (link_info.output_bfd),
95
                             bfd_get_mach (link_info.output_bfd)))
96
    {
97
      einfo ("%F%P: can not create BFD %E\n");
98
      return;
99
    }
100
 
101
  stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
102
  ldlang_add_file (stub_file);
103
  ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info);
104
}
105
 
106
/* Move the input section statement at *U which happens to be on LIST
107
   to be just before *TO.  */
108
 
109
static void
110
move_input_section (lang_statement_list_type *list,
111
                    lang_statement_union_type **u,
112
                    lang_statement_union_type **to)
113
{
114
  lang_statement_union_type *s = *u;
115
  asection *i = s->input_section.section;
116
  asection *p, *n;
117
 
118
  /* Snip the input section from the statement list.  If it was the
119
     last statement, fix the list tail pointer.  */
120
  *u = s->header.next;
121
  if (*u == NULL)
122
    list->tail = u;
123
  /* Add it back in the new position.  */
124
  s->header.next = *to;
125
  *to = s;
126
  if (list->tail == to)
127
    list->tail = &s->header.next;
128
 
129
  /* Trim I off the bfd map_head/map_tail doubly linked lists.  */
130
  n = i->map_head.s;
131
  p = i->map_tail.s;
132
  (p != NULL ? p : i->output_section)->map_head.s = n;
133
  (n != NULL ? n : i->output_section)->map_tail.s = p;
134
 
135
  /* Add I back on in its new position.  */
136
  if (s->header.next->header.type == lang_input_section_enum)
137
    {
138
      n = s->header.next->input_section.section;
139
      p = n->map_tail.s;
140
    }
141
  else
142
    {
143
      /* If the next statement is not an input section statement then
144
         TO must point at the previous input section statement
145
         header.next field.  */
146
      lang_input_section_type *prev = (lang_input_section_type *)
147
        ((char *) to - offsetof (lang_statement_union_type, header.next));
148
 
149
      ASSERT (prev->header.type == lang_input_section_enum);
150
      p = prev->section;
151
      n = p->map_head.s;
152
    }
153
  i->map_head.s = n;
154
  i->map_tail.s = p;
155
  (p != NULL ? p : i->output_section)->map_head.s = i;
156
  (n != NULL ? n : i->output_section)->map_tail.s = i;
157
}
158
 
159
/* Sort input section statements in the linker script tree rooted at
160
   LIST so that those whose owning bfd happens to have a section
161
   called .init or .fini are placed first.  Place any TOC sections
162
   referenced by small TOC relocs next, with TOC sections referenced
163
   only by bigtoc relocs last.  */
164
 
165
static void
166
sort_toc_sections (lang_statement_list_type *list,
167
                   lang_statement_union_type **ini,
168
                   lang_statement_union_type **small)
169
{
170
  lang_statement_union_type *s, **u;
171
  asection *i;
172
 
173
  u = &list->head;
174
  while ((s = *u) != NULL)
175
    {
176
      switch (s->header.type)
177
        {
178
        case lang_wild_statement_enum:
179
          sort_toc_sections (&s->wild_statement.children, ini, small);
180
          break;
181
 
182
        case lang_group_statement_enum:
183
          sort_toc_sections (&s->group_statement.children, ini, small);
184
          break;
185
 
186
        case lang_input_section_enum:
187
          i = s->input_section.section;
188
          /* Leave the stub_file .got where it is.  We put the .got
189
             header there.  */
190
          if (i->owner == stub_file->the_bfd)
191
            break;
192
          if (bfd_get_section_by_name (i->owner, ".init") != NULL
193
              || bfd_get_section_by_name (i->owner, ".fini") != NULL)
194
            {
195
              if (ini != NULL && *ini != s)
196
                {
197
                  move_input_section (list, u, ini);
198
                  if (small == ini)
199
                    small = &s->header.next;
200
                  ini = &s->header.next;
201
                  continue;
202
                }
203
              if (small == ini)
204
                small = &s->header.next;
205
              ini = &s->header.next;
206
              break;
207
            }
208
          else if (ini == NULL)
209
            ini = u;
210
 
211
          if (ppc64_elf_has_small_toc_reloc (i))
212
            {
213
              if (small != NULL && *small != s)
214
                {
215
                  move_input_section (list, u, small);
216
                  small = &s->header.next;
217
                  continue;
218
                }
219
              small = &s->header.next;
220
            }
221
          else if (small == NULL)
222
            small = u;
223
          break;
224
 
225
        default:
226
          break;
227
        }
228
      u = &s->header.next;
229
    }
230
}
231
 
232
static void
233
prelim_size_sections (void)
234
{
235
  if (expld.phase != lang_mark_phase_enum)
236
    {
237
      expld.phase = lang_mark_phase_enum;
238
      expld.dataseg.phase = exp_dataseg_none;
239
      one_lang_size_sections_pass (NULL, FALSE);
240
      /* We must not cache anything from the preliminary sizing.  */
241
      lang_reset_memory_regions ();
242
    }
243
}
244
 
245
static void
246
ppc_before_allocation (void)
247
{
248
  if (stub_file != NULL)
249
    {
250
      if (!no_opd_opt
251
          && !ppc64_elf_edit_opd (&link_info, non_overlapping_opd))
252
        einfo ("%X%P: can not edit %s %E\n", "opd");
253
 
254
      if (ppc64_elf_tls_setup (&link_info, no_tls_get_addr_opt, &no_multi_toc)
255
          && !no_tls_opt)
256
        {
257
          /* Size the sections.  This is premature, but we want to know the
258
             TLS segment layout so that certain optimizations can be done.  */
259
          prelim_size_sections ();
260
 
261
          if (!ppc64_elf_tls_optimize (&link_info))
262
            einfo ("%X%P: TLS problem %E\n");
263
        }
264
 
265
      if (!no_toc_opt
266
          && !link_info.relocatable)
267
        {
268
          prelim_size_sections ();
269
 
270
          if (!ppc64_elf_edit_toc (&link_info))
271
            einfo ("%X%P: can not edit %s %E\n", "toc");
272
        }
273
 
274
      if (!no_toc_sort)
275
        {
276
          lang_output_section_statement_type *toc_os;
277
 
278
          toc_os = lang_output_section_find (".got");
279
          if (toc_os != NULL)
280
            sort_toc_sections (&toc_os->children, NULL, NULL);
281
        }
282
    }
283
 
284
  gld${EMULATION_NAME}_before_allocation ();
285
}
286
 
287
struct hook_stub_info
288
{
289
  lang_statement_list_type add;
290
  asection *input_section;
291
};
292
 
293
/* Traverse the linker tree to find the spot where the stub goes.  */
294
 
295
static bfd_boolean
296
hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp)
297
{
298
  lang_statement_union_type *l;
299
  bfd_boolean ret;
300
 
301
  for (; (l = *lp) != NULL; lp = &l->header.next)
302
    {
303
      switch (l->header.type)
304
        {
305
        case lang_constructors_statement_enum:
306
          ret = hook_in_stub (info, &constructor_list.head);
307
          if (ret)
308
            return ret;
309
          break;
310
 
311
        case lang_output_section_statement_enum:
312
          ret = hook_in_stub (info,
313
                              &l->output_section_statement.children.head);
314
          if (ret)
315
            return ret;
316
          break;
317
 
318
        case lang_wild_statement_enum:
319
          ret = hook_in_stub (info, &l->wild_statement.children.head);
320
          if (ret)
321
            return ret;
322
          break;
323
 
324
        case lang_group_statement_enum:
325
          ret = hook_in_stub (info, &l->group_statement.children.head);
326
          if (ret)
327
            return ret;
328
          break;
329
 
330
        case lang_input_section_enum:
331
          if (l->input_section.section == info->input_section)
332
            {
333
              /* We've found our section.  Insert the stub immediately
334
                 before its associated input section.  */
335
              *lp = info->add.head;
336
              *(info->add.tail) = l;
337
              return TRUE;
338
            }
339
          break;
340
 
341
        case lang_data_statement_enum:
342
        case lang_reloc_statement_enum:
343
        case lang_object_symbols_statement_enum:
344
        case lang_output_statement_enum:
345
        case lang_target_statement_enum:
346
        case lang_input_statement_enum:
347
        case lang_assignment_statement_enum:
348
        case lang_padding_statement_enum:
349
        case lang_address_statement_enum:
350
        case lang_fill_statement_enum:
351
          break;
352
 
353
        default:
354
          FAIL ();
355
          break;
356
        }
357
    }
358
  return FALSE;
359
}
360
 
361
 
362
/* Call-back for ppc64_elf_size_stubs.  */
363
 
364
/* Create a new stub section, and arrange for it to be linked
365
   immediately before INPUT_SECTION.  */
366
 
367
static asection *
368
ppc_add_stub_section (const char *stub_sec_name, asection *input_section)
369
{
370
  asection *stub_sec;
371
  flagword flags;
372
  asection *output_section;
373
  const char *secname;
374
  lang_output_section_statement_type *os;
375
  struct hook_stub_info info;
376
 
377
  flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
378
           | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP);
379
  stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd,
380
                                                 stub_sec_name, flags);
381
  if (stub_sec == NULL)
382
    goto err_ret;
383
 
384
  output_section = input_section->output_section;
385
  secname = bfd_get_section_name (output_section->owner, output_section);
386
  os = lang_output_section_find (secname);
387
 
388
  info.input_section = input_section;
389
  lang_list_init (&info.add);
390
  lang_add_section (&info.add, stub_sec, os);
391
 
392
  if (info.add.head == NULL)
393
    goto err_ret;
394
 
395
  stub_added = 1;
396
  if (hook_in_stub (&info, &os->children.head))
397
    return stub_sec;
398
 
399
 err_ret:
400
  einfo ("%X%P: can not make stub section: %E\n");
401
  return NULL;
402
}
403
 
404
 
405
/* Another call-back for ppc64_elf_size_stubs.  */
406
 
407
static void
408
ppc_layout_sections_again (void)
409
{
410
  /* If we have changed sizes of the stub sections, then we need
411
     to recalculate all the section offsets.  This may mean we need to
412
     add even more stubs.  */
413
  gld${EMULATION_NAME}_map_segments (TRUE);
414
 
415
  if (!link_info.relocatable)
416
    _bfd_set_gp_value (link_info.output_bfd,
417
                       ppc64_elf_toc (link_info.output_bfd));
418
 
419
  need_laying_out = -1;
420
}
421
 
422
 
423
static void
424
build_toc_list (lang_statement_union_type *statement)
425
{
426
  if (statement->header.type == lang_input_section_enum)
427
    {
428
      asection *i = statement->input_section.section;
429
 
430
      if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
431
          && (i->flags & SEC_EXCLUDE) == 0
432
          && i->output_section == toc_section)
433
        {
434
          if (!ppc64_elf_next_toc_section (&link_info, i))
435
            einfo ("%X%P: linker script separates .got and .toc\n");
436
        }
437
    }
438
}
439
 
440
 
441
static void
442
build_section_lists (lang_statement_union_type *statement)
443
{
444
  if (statement->header.type == lang_input_section_enum)
445
    {
446
      asection *i = statement->input_section.section;
447
 
448
      if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
449
          && (i->flags & SEC_EXCLUDE) == 0
450
          && i->output_section != NULL
451
          && i->output_section->owner == link_info.output_bfd)
452
        {
453
          if (!ppc64_elf_next_input_section (&link_info, i))
454
            einfo ("%X%P: can not size stub section: %E\n");
455
        }
456
    }
457
}
458
 
459
 
460
/* Call the back-end function to set TOC base after we have placed all
461
   the sections.  */
462
static void
463
gld${EMULATION_NAME}_after_allocation (void)
464
{
465
  /* bfd_elf_discard_info just plays with data and debugging sections,
466
     ie. doesn't affect code size, so we can delay resizing the
467
     sections.  It's likely we'll resize everything in the process of
468
     adding stubs.  */
469
  if (bfd_elf_discard_info (link_info.output_bfd, &link_info))
470
    need_laying_out = 1;
471
 
472
  /* If generating a relocatable output file, then we don't have any
473
     stubs.  */
474
  if (stub_file != NULL && !link_info.relocatable)
475
    {
476
      int ret = ppc64_elf_setup_section_lists (&link_info,
477
                                               &ppc_add_stub_section,
478
                                               &ppc_layout_sections_again);
479
      if (ret < 0)
480
        einfo ("%X%P: can not size stub section: %E\n");
481
      else if (ret > 0)
482
        {
483
          ppc64_elf_start_multitoc_partition (&link_info);
484
 
485
          if (!no_multi_toc)
486
            {
487
              toc_section = bfd_get_section_by_name (link_info.output_bfd,
488
                                                     ".got");
489
              if (toc_section != NULL)
490
                lang_for_each_statement (build_toc_list);
491
            }
492
 
493
          if (ppc64_elf_layout_multitoc (&link_info)
494
              && !no_multi_toc
495
              && toc_section != NULL)
496
            lang_for_each_statement (build_toc_list);
497
 
498
          ppc64_elf_finish_multitoc_partition (&link_info);
499
 
500
          lang_for_each_statement (build_section_lists);
501
 
502
          if (!ppc64_elf_check_init_fini (&link_info))
503
            einfo ("%P: .init/.fini fragments use differing TOC pointers\n");
504
 
505
          /* Call into the BFD backend to do the real work.  */
506 157 khays
          if (!ppc64_elf_size_stubs (&link_info, group_size, plt_static_chain))
507 145 khays
            einfo ("%X%P: can not size stub section: %E\n");
508
        }
509
    }
510
 
511
  if (need_laying_out != -1)
512
    {
513
      gld${EMULATION_NAME}_map_segments (need_laying_out);
514
 
515
      if (!link_info.relocatable)
516
        _bfd_set_gp_value (link_info.output_bfd,
517
                           ppc64_elf_toc (link_info.output_bfd));
518
    }
519
}
520
 
521
 
522
/* Final emulation specific call.  */
523
 
524
static void
525
gld${EMULATION_NAME}_finish (void)
526
{
527
  /* e_entry on PowerPC64 points to the function descriptor for
528
     _start.  If _start is missing, default to the first function
529
     descriptor in the .opd section.  */
530
  entry_section = ".opd";
531
 
532
  if (link_info.relocatable)
533
    {
534
      asection *toc = bfd_get_section_by_name (link_info.output_bfd, ".toc");
535
      if (toc != NULL
536
          && bfd_section_size (link_info.output_bfd, toc) > 0x10000)
537
        einfo ("%X%P: TOC section size exceeds 64k\n");
538
    }
539
 
540
  if (stub_added)
541
    {
542
      char *msg = NULL;
543
      char *line, *endline;
544
 
545
      if (emit_stub_syms < 0)
546
        emit_stub_syms = 1;
547
      if (!ppc64_elf_build_stubs (emit_stub_syms, &link_info,
548
                                  config.stats ? &msg : NULL))
549
        einfo ("%X%P: can not build stubs: %E\n");
550
 
551
      fflush (stdout);
552
      for (line = msg; line != NULL; line = endline)
553
        {
554
          endline = strchr (line, '\n');
555
          if (endline != NULL)
556
            *endline++ = '\0';
557
          fprintf (stderr, "%s: %s\n", program_name, line);
558
        }
559
      fflush (stderr);
560
      if (msg != NULL)
561
        free (msg);
562
    }
563
 
564
  ppc64_elf_restore_symbols (&link_info);
565
  finish_default ();
566
}
567
 
568
 
569
/* Add a pattern matching ".foo" for every "foo" in a version script.
570
 
571
   The reason for doing this is that many shared library version
572
   scripts export a selected set of functions or data symbols, forcing
573
   others local.  eg.
574
 
575
   . VERS_1 {
576
   .       global:
577
   .               this; that; some; thing;
578
   .       local:
579
   .               *;
580
   .   };
581
 
582
   To make the above work for PowerPC64, we need to export ".this",
583
   ".that" and so on, otherwise only the function descriptor syms are
584
   exported.  Lack of an exported function code sym may cause a
585
   definition to be pulled in from a static library.  */
586
 
587
static struct bfd_elf_version_expr *
588
gld${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry)
589
{
590
  struct bfd_elf_version_expr *dot_entry;
591
  unsigned int len;
592
  char *dot_pat;
593
 
594
  if (!dotsyms
595
      || entry->pattern[0] == '.'
596
      || (!entry->literal && entry->pattern[0] == '*'))
597
    return entry;
598
 
599
  dot_entry = xmalloc (sizeof *dot_entry);
600
  *dot_entry = *entry;
601
  dot_entry->next = entry;
602
  len = strlen (entry->pattern) + 2;
603
  dot_pat = xmalloc (len);
604
  dot_pat[0] = '.';
605
  memcpy (dot_pat + 1, entry->pattern, len - 1);
606
  dot_entry->pattern = dot_pat;
607
  dot_entry->script = 1;
608
  return dot_entry;
609
}
610
 
611
 
612
/* Avoid processing the fake stub_file in vercheck, stat_needed and
613
   check_needed routines.  */
614
 
615
static void (*real_func) (lang_input_statement_type *);
616
 
617
static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l)
618
{
619
  if (l != stub_file)
620
    (*real_func) (l);
621
}
622
 
623
static void
624
ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *))
625
{
626
  real_func = func;
627
  lang_for_each_input_file (&ppc_for_each_input_file_wrapper);
628
}
629
 
630
#define lang_for_each_input_file ppc_lang_for_each_input_file
631
 
632
EOF
633
 
634
if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
635
  fragment <
636
/* Special handling for embedded SPU executables.  */
637
extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
638
static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);
639
 
640
static bfd_boolean
641
ppc64_recognized_file (lang_input_statement_type *entry)
642
{
643
  if (embedded_spu_file (entry, "-m64"))
644
    return TRUE;
645
 
646
  return gld${EMULATION_NAME}_load_symbols (entry);
647
}
648
EOF
649
LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file
650
fi
651
 
652
# Define some shell vars to insert bits of code into the standard elf
653
# parse_args and list_options functions.
654
#
655 157 khays
PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}'
656
#define OPTION_STUBGROUP_SIZE           321
657
#define OPTION_PLT_STATIC_CHAIN         (OPTION_STUBGROUP_SIZE + 1)
658
#define OPTION_NO_PLT_STATIC_CHAIN      (OPTION_PLT_STATIC_CHAIN + 1)
659
#define OPTION_STUBSYMS                 (OPTION_NO_PLT_STATIC_CHAIN + 1)
660 145 khays
#define OPTION_NO_STUBSYMS              (OPTION_STUBSYMS + 1)
661
#define OPTION_DOTSYMS                  (OPTION_NO_STUBSYMS + 1)
662
#define OPTION_NO_DOTSYMS               (OPTION_DOTSYMS + 1)
663
#define OPTION_NO_TLS_OPT               (OPTION_NO_DOTSYMS + 1)
664
#define OPTION_NO_TLS_GET_ADDR_OPT      (OPTION_NO_TLS_OPT + 1)
665
#define OPTION_NO_OPD_OPT               (OPTION_NO_TLS_GET_ADDR_OPT + 1)
666
#define OPTION_NO_TOC_OPT               (OPTION_NO_OPD_OPT + 1)
667
#define OPTION_NO_MULTI_TOC             (OPTION_NO_TOC_OPT + 1)
668
#define OPTION_NO_TOC_SORT              (OPTION_NO_MULTI_TOC + 1)
669
#define OPTION_NON_OVERLAPPING_OPD      (OPTION_NO_TOC_SORT + 1)
670
'
671
 
672 157 khays
PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
673 145 khays
  { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE },
674 157 khays
  { "plt-static-chain", no_argument, NULL, OPTION_PLT_STATIC_CHAIN },
675
  { "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN },
676 145 khays
  { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
677
  { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
678
  { "dotsyms", no_argument, NULL, OPTION_DOTSYMS },
679
  { "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS },
680
  { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
681
  { "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },
682
  { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT },
683
  { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT },
684
  { "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC },
685
  { "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT },
686
  { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD },
687
'
688
 
689 157 khays
PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'
690 145 khays
  fprintf (file, _("\
691
  --stub-group-size=N         Maximum size of a group of input sections that\n\
692
                                can be handled by one stub section.  A negative\n\
693
                                value locates all stubs before their branches\n\
694
                                (with a group size of -N), while a positive\n\
695
                                value allows two groups of input sections, one\n\
696
                                before, and one after each stub section.\n\
697
                                Values of +/-1 indicate the linker should\n\
698
                                choose suitable defaults.\n"
699
                   ));
700
  fprintf (file, _("\
701 157 khays
  --plt-static-chain          PLT call stubs should load r11.\n"
702
                   ));
703
  fprintf (file, _("\
704
  --no-plt-static-chain       PLT call stubs should not load r11. (default)\n"
705
                   ));
706
  fprintf (file, _("\
707 145 khays
  --emit-stub-syms            Label linker stubs with a symbol.\n"
708
                   ));
709
  fprintf (file, _("\
710
  --no-emit-stub-syms         Don'\''t label linker stubs with a symbol.\n"
711
                   ));
712
  fprintf (file, _("\
713
  --dotsyms                   For every version pattern \"foo\" in a version\n\
714
                                script, add \".foo\" so that function code\n\
715
                                symbols are treated the same as function\n\
716
                                descriptor symbols.  Defaults to on.\n"
717
                   ));
718
  fprintf (file, _("\
719
  --no-dotsyms                Don'\''t do anything special in version scripts.\n"
720
                   ));
721
  fprintf (file, _("\
722
  --no-tls-optimize           Don'\''t try to optimize TLS accesses.\n"
723
                   ));
724
  fprintf (file, _("\
725
  --no-tls-get-addr-optimize  Don'\''t use a special __tls_get_addr call.\n"
726
                   ));
727
  fprintf (file, _("\
728
  --no-opd-optimize           Don'\''t optimize the OPD section.\n"
729
                   ));
730
  fprintf (file, _("\
731
  --no-toc-optimize           Don'\''t optimize the TOC section.\n"
732
                   ));
733
  fprintf (file, _("\
734
  --no-multi-toc              Disallow automatic multiple toc sections.\n"
735
                   ));
736
  fprintf (file, _("\
737
  --no-toc-sort               Don'\''t sort TOC and GOT sections.\n"
738
                   ));
739
  fprintf (file, _("\
740
  --non-overlapping-opd       Canonicalize .opd, so that there are no\n\
741
                                overlapping .opd entries.\n"
742
                   ));
743
'
744
 
745 157 khays
PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}'
746 145 khays
    case OPTION_STUBGROUP_SIZE:
747
      {
748
        const char *end;
749
        group_size = bfd_scan_vma (optarg, &end, 0);
750
        if (*end)
751
          einfo (_("%P%F: invalid number `%s'\''\n"), optarg);
752
      }
753
      break;
754
 
755 157 khays
    case OPTION_PLT_STATIC_CHAIN:
756
      plt_static_chain = 1;
757
      break;
758
 
759
    case OPTION_NO_PLT_STATIC_CHAIN:
760
      plt_static_chain = 0;
761
      break;
762
 
763 145 khays
    case OPTION_STUBSYMS:
764
      emit_stub_syms = 1;
765
      break;
766
 
767
    case OPTION_NO_STUBSYMS:
768
      emit_stub_syms = 0;
769
      break;
770
 
771
    case OPTION_DOTSYMS:
772
      dotsyms = 1;
773
      break;
774
 
775
    case OPTION_NO_DOTSYMS:
776
      dotsyms = 0;
777
      break;
778
 
779
    case OPTION_NO_TLS_OPT:
780
      no_tls_opt = 1;
781
      break;
782
 
783
    case OPTION_NO_TLS_GET_ADDR_OPT:
784
      no_tls_get_addr_opt = 1;
785
      break;
786
 
787
    case OPTION_NO_OPD_OPT:
788
      no_opd_opt = 1;
789
      break;
790
 
791
    case OPTION_NO_TOC_OPT:
792
      no_toc_opt = 1;
793
      break;
794
 
795
    case OPTION_NO_MULTI_TOC:
796
      no_multi_toc = 1;
797
      break;
798
 
799
    case OPTION_NO_TOC_SORT:
800
      no_toc_sort = 1;
801
      break;
802
 
803
    case OPTION_NON_OVERLAPPING_OPD:
804
      non_overlapping_opd = 1;
805
      break;
806
'
807
 
808
# Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation
809
#
810
LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
811
LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
812
LDEMUL_FINISH=gld${EMULATION_NAME}_finish
813
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements
814
LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern

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