ld/emultempl/ppc64elf.em

   1 # This shell script emits a C file. -*- C -*-
   2 # Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   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 <<EOF
  27
  28 #include "ldctor.h"
  29 #include "libbfd.h"
  30 #include "elf-bfd.h"
  31 #include "elf64-ppc.h"
  32 #include "ldlex.h"
  33
  34 /* Fake input file for stubs.  */
  35 static lang_input_statement_type *stub_file;
  36 static int stub_added = 0;
  37
  38 /* Whether we need to call ppc_layout_sections_again.  */
  39 static int need_laying_out = 0;
  40
  41 /* Maximum size of a group of input sections that can be handled by
  42    one stub section.  A value of +/-1 indicates the bfd back-end
  43    should use a suitable default size.  */
  44 static bfd_signed_vma group_size = 1;
  45
  46 /* Whether to add ".foo" entries for each "foo" in a version script.  */
  47 static int dotsyms = 1;
  48
  49 /* Whether to run tls optimization.  */
  50 static int no_tls_opt = 0;
  51 static int no_tls_get_addr_opt = 0;
  52
  53 /* Whether to run opd optimization.  */
  54 static int no_opd_opt = 0;
  55
  56 /* Whether to run toc optimization.  */
  57 static int no_toc_opt = 0;
  58
  59 /* Whether to allow multiple toc sections.  */
  60 static int no_multi_toc = 0;
  61
  62 /* Whether to sort input toc and got sections.  */
  63 static int no_toc_sort = 0;
  64
  65 /* Set if PLT call stubs should load r11.  */
  66 static int plt_static_chain = ${DEFAULT_PLT_STATIC_CHAIN-0};
  67
  68 /* Set if PLT call stubs need to be thread safe on power7+.  */
  69 static int plt_thread_safe = -1;
  70
  71 /* Set if individual PLT call stubs should be aligned.  */
  72 static int plt_stub_align = 0;
  73
  74 /* Whether to emit symbols for stubs.  */
  75 static int emit_stub_syms = -1;
  76
  77 static asection *toc_section = 0;
  78
  79 /* Whether to canonicalize .opd so that there are no overlapping
  80    .opd entries.  */
  81 static int non_overlapping_opd = 0;
  82
  83 /* This is called before the input files are opened.  We create a new
  84    fake input file to hold the stub sections.  */
  85
  86 static void
  87 ppc_create_output_section_statements (void)
  88 {
  89   if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
  90         && elf_object_id (link_info.output_bfd) == PPC64_ELF_DATA))
  91     return;
  92
  93   link_info.wrap_char = '.';
  94
  95   stub_file = lang_add_input_file ("linker stubs",
  96                                    lang_input_file_is_fake_enum,
  97                                    NULL);
  98   stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd);
  99   if (stub_file->the_bfd == NULL
 100       || !bfd_set_arch_mach (stub_file->the_bfd,
 101                              bfd_get_arch (link_info.output_bfd),
 102                              bfd_get_mach (link_info.output_bfd)))
 103     {
 104       einfo ("%F%P: can not create BFD: %E\n");
 105       return;
 106     }
 107
 108   stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
 109   ldlang_add_file (stub_file);
 110   if (!ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info))
 111     einfo ("%F%P: can not init BFD: %E\n");
 112 }
 113
 114 /* Move the input section statement at *U which happens to be on LIST
 115    to be just before *TO.  */
 116
 117 static void
 118 move_input_section (lang_statement_list_type *list,
 119                     lang_statement_union_type **u,
 120                     lang_statement_union_type **to)
 121 {
 122   lang_statement_union_type *s = *u;
 123   asection *i = s->input_section.section;
 124   asection *p, *n;
 125
 126   /* Snip the input section from the statement list.  If it was the
 127      last statement, fix the list tail pointer.  */
 128   *u = s->header.next;
 129   if (*u == NULL)
 130     list->tail = u;
 131   /* Add it back in the new position.  */
 132   s->header.next = *to;
 133   *to = s;
 134   if (list->tail == to)
 135     list->tail = &s->header.next;
 136
 137   /* Trim I off the bfd map_head/map_tail doubly linked lists.  */
 138   n = i->map_head.s;
 139   p = i->map_tail.s;
 140   (p != NULL ? p : i->output_section)->map_head.s = n;
 141   (n != NULL ? n : i->output_section)->map_tail.s = p;
 142
 143   /* Add I back on in its new position.  */
 144   if (s->header.next->header.type == lang_input_section_enum)
 145     {
 146       n = s->header.next->input_section.section;
 147       p = n->map_tail.s;
 148     }
 149   else
 150     {
 151       /* If the next statement is not an input section statement then
 152          TO must point at the previous input section statement
 153          header.next field.  */
 154       lang_input_section_type *prev = (lang_input_section_type *)
 155         ((char *) to - offsetof (lang_statement_union_type, header.next));
 156
 157       ASSERT (prev->header.type == lang_input_section_enum);
 158       p = prev->section;
 159       n = p->map_head.s;
 160     }
 161   i->map_head.s = n;
 162   i->map_tail.s = p;
 163   (p != NULL ? p : i->output_section)->map_head.s = i;
 164   (n != NULL ? n : i->output_section)->map_tail.s = i;
 165 }
 166
 167 /* Sort input section statements in the linker script tree rooted at
 168    LIST so that those whose owning bfd happens to have a section
 169    called .init or .fini are placed first.  Place any TOC sections
 170    referenced by small TOC relocs next, with TOC sections referenced
 171    only by bigtoc relocs last.  */
 172
 173 static void
 174 sort_toc_sections (lang_statement_list_type *list,
 175                    lang_statement_union_type **ini,
 176                    lang_statement_union_type **small)
 177 {
 178   lang_statement_union_type *s, **u;
 179   asection *i;
 180
 181   u = &list->head;
 182   while ((s = *u) != NULL)
 183     {
 184       switch (s->header.type)
 185         {
 186         case lang_wild_statement_enum:
 187           sort_toc_sections (&s->wild_statement.children, ini, small);
 188           break;
 189
 190         case lang_group_statement_enum:
 191           sort_toc_sections (&s->group_statement.children, ini, small);
 192           break;
 193
 194         case lang_input_section_enum:
 195           i = s->input_section.section;
 196           /* Leave the stub_file .got where it is.  We put the .got
 197              header there.  */
 198           if (i->owner == stub_file->the_bfd)
 199             break;
 200           if (bfd_get_section_by_name (i->owner, ".init") != NULL
 201               || bfd_get_section_by_name (i->owner, ".fini") != NULL)
 202             {
 203               if (ini != NULL && *ini != s)
 204                 {
 205                   move_input_section (list, u, ini);
 206                   if (small == ini)
 207                     small = &s->header.next;
 208                   ini = &s->header.next;
 209                   continue;
 210                 }
 211               if (small == ini)
 212                 small = &s->header.next;
 213               ini = &s->header.next;
 214               break;
 215             }
 216           else if (ini == NULL)
 217             ini = u;
 218
 219           if (ppc64_elf_has_small_toc_reloc (i))
 220             {
 221               if (small != NULL && *small != s)
 222                 {
 223                   move_input_section (list, u, small);
 224                   small = &s->header.next;
 225                   continue;
 226                 }
 227               small = &s->header.next;
 228             }
 229           else if (small == NULL)
 230             small = u;
 231           break;
 232
 233         default:
 234           break;
 235         }
 236       u = &s->header.next;
 237     }
 238 }
 239
 240 static void
 241 prelim_size_sections (void)
 242 {
 243   if (expld.phase != lang_mark_phase_enum)
 244     {
 245       expld.phase = lang_mark_phase_enum;
 246       expld.dataseg.phase = exp_dataseg_none;
 247       one_lang_size_sections_pass (NULL, FALSE);
 248       /* We must not cache anything from the preliminary sizing.  */
 249       lang_reset_memory_regions ();
 250     }
 251 }
 252
 253 static void
 254 ppc_before_allocation (void)
 255 {
 256   if (stub_file != NULL)
 257     {
 258       if (!no_opd_opt
 259           && !ppc64_elf_edit_opd (&link_info, non_overlapping_opd))
 260         einfo ("%X%P: can not edit %s: %E\n", "opd");
 261
 262       if (ppc64_elf_tls_setup (&link_info, no_tls_get_addr_opt, &no_multi_toc)
 263           && !no_tls_opt)
 264         {
 265           /* Size the sections.  This is premature, but we want to know the
 266              TLS segment layout so that certain optimizations can be done.  */
 267           prelim_size_sections ();
 268
 269           if (!ppc64_elf_tls_optimize (&link_info))
 270             einfo ("%X%P: TLS problem %E\n");
 271         }
 272
 273       if (!no_toc_opt
 274           && !link_info.relocatable)
 275         {
 276           prelim_size_sections ();
 277
 278           if (!ppc64_elf_edit_toc (&link_info))
 279             einfo ("%X%P: can not edit %s: %E\n", "toc");
 280         }
 281
 282       if (!no_toc_sort)
 283         {
 284           lang_output_section_statement_type *toc_os;
 285
 286           toc_os = lang_output_section_find (".got");
 287           if (toc_os != NULL)
 288             sort_toc_sections (&toc_os->children, NULL, NULL);
 289         }
 290     }
 291
 292   gld${EMULATION_NAME}_before_allocation ();
 293 }
 294
 295 struct hook_stub_info
 296 {
 297   lang_statement_list_type add;
 298   asection *input_section;
 299 };
 300
 301 /* Traverse the linker tree to find the spot where the stub goes.  */
 302
 303 static bfd_boolean
 304 hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp)
 305 {
 306   lang_statement_union_type *l;
 307   bfd_boolean ret;
 308
 309   for (; (l = *lp) != NULL; lp = &l->header.next)
 310     {
 311       switch (l->header.type)
 312         {
 313         case lang_constructors_statement_enum:
 314           ret = hook_in_stub (info, &constructor_list.head);
 315           if (ret)
 316             return ret;
 317           break;
 318
 319         case lang_output_section_statement_enum:
 320           ret = hook_in_stub (info,
 321                               &l->output_section_statement.children.head);
 322           if (ret)
 323             return ret;
 324           break;
 325
 326         case lang_wild_statement_enum:
 327           ret = hook_in_stub (info, &l->wild_statement.children.head);
 328           if (ret)
 329             return ret;
 330           break;
 331
 332         case lang_group_statement_enum:
 333           ret = hook_in_stub (info, &l->group_statement.children.head);
 334           if (ret)
 335             return ret;
 336           break;
 337
 338         case lang_input_section_enum:
 339           if (l->input_section.section == info->input_section)
 340             {
 341               /* We've found our section.  Insert the stub immediately
 342                  before its associated input section.  */
 343               *lp = info->add.head;
 344               *(info->add.tail) = l;
 345               return TRUE;
 346             }
 347           break;
 348
 349         case lang_data_statement_enum:
 350         case lang_reloc_statement_enum:
 351         case lang_object_symbols_statement_enum:
 352         case lang_output_statement_enum:
 353         case lang_target_statement_enum:
 354         case lang_input_statement_enum:
 355         case lang_assignment_statement_enum:
 356         case lang_padding_statement_enum:
 357         case lang_address_statement_enum:
 358         case lang_fill_statement_enum:
 359           break;
 360
 361         default:
 362           FAIL ();
 363           break;
 364         }
 365     }
 366   return FALSE;
 367 }
 368
 369
 370 /* Call-back for ppc64_elf_size_stubs.  */
 371
 372 /* Create a new stub section, and arrange for it to be linked
 373    immediately before INPUT_SECTION.  */
 374
 375 static asection *
 376 ppc_add_stub_section (const char *stub_sec_name, asection *input_section)
 377 {
 378   asection *stub_sec;
 379   flagword flags;
 380   asection *output_section;
 381   lang_output_section_statement_type *os;
 382   struct hook_stub_info info;
 383
 384   flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
 385            | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP);
 386   stub_sec = bfd_make_section_anyway_with_flags (stub_file->the_bfd,
 387                                                  stub_sec_name, flags);
 388   if (stub_sec == NULL
 389       || !bfd_set_section_alignment (stub_file->the_bfd, stub_sec,
 390                                      plt_stub_align > 5 ? plt_stub_align : 5))
 391     goto err_ret;
 392
 393   output_section = input_section->output_section;
 394   os = lang_output_section_get (output_section);
 395
 396   info.input_section = input_section;
 397   lang_list_init (&info.add);
 398   lang_add_section (&info.add, stub_sec, NULL, os);
 399
 400   if (info.add.head == NULL)
 401     goto err_ret;
 402
 403   stub_added = 1;
 404   if (hook_in_stub (&info, &os->children.head))
 405     return stub_sec;
 406
 407  err_ret:
 408   einfo ("%X%P: can not make stub section: %E\n");
 409   return NULL;
 410 }
 411
 412
 413 /* Another call-back for ppc64_elf_size_stubs.  */
 414
 415 static void
 416 ppc_layout_sections_again (void)
 417 {
 418   /* If we have changed sizes of the stub sections, then we need
 419      to recalculate all the section offsets.  This may mean we need to
 420      add even more stubs.  */
 421   gld${EMULATION_NAME}_map_segments (TRUE);
 422
 423   if (!link_info.relocatable)
 424     ppc64_elf_set_toc (&link_info, link_info.output_bfd);
 425
 426   need_laying_out = -1;
 427 }
 428
 429
 430 static void
 431 build_toc_list (lang_statement_union_type *statement)
 432 {
 433   if (statement->header.type == lang_input_section_enum)
 434     {
 435       asection *i = statement->input_section.section;
 436
 437       if (i->sec_info_type != SEC_INFO_TYPE_JUST_SYMS
 438           && (i->flags & SEC_EXCLUDE) == 0
 439           && i->output_section == toc_section)
 440         {
 441           if (!ppc64_elf_next_toc_section (&link_info, i))
 442             einfo ("%X%P: linker script separates .got and .toc\n");
 443         }
 444     }
 445 }
 446
 447
 448 static void
 449 build_section_lists (lang_statement_union_type *statement)
 450 {
 451   if (statement->header.type == lang_input_section_enum)
 452     {
 453       asection *i = statement->input_section.section;
 454
 455       if (!((lang_input_statement_type *) i->owner->usrdata)->flags.just_syms
 456           && (i->flags & SEC_EXCLUDE) == 0
 457           && i->output_section != NULL
 458           && i->output_section->owner == link_info.output_bfd)
 459         {
 460           if (!ppc64_elf_next_input_section (&link_info, i))
 461             einfo ("%X%P: can not size stub section: %E\n");
 462         }
 463     }
 464 }
 465
 466
 467 /* Call the back-end function to set TOC base after we have placed all
 468    the sections.  */
 469 static void
 470 gld${EMULATION_NAME}_after_allocation (void)
 471 {
 472   /* bfd_elf_discard_info just plays with data and debugging sections,
 473      ie. doesn't affect code size, so we can delay resizing the
 474      sections.  It's likely we'll resize everything in the process of
 475      adding stubs.  */
 476   if (bfd_elf_discard_info (link_info.output_bfd, &link_info))
 477     need_laying_out = 1;
 478
 479   /* If generating a relocatable output file, then we don't have any
 480      stubs.  */
 481   if (stub_file != NULL && !link_info.relocatable)
 482     {
 483       int ret = ppc64_elf_setup_section_lists (&link_info,
 484                                                &ppc_add_stub_section,
 485                                                &ppc_layout_sections_again);
 486       if (ret < 0)
 487         einfo ("%X%P: can not size stub section: %E\n");
 488       else if (ret > 0)
 489         {
 490           ppc64_elf_start_multitoc_partition (&link_info);
 491
 492           if (!no_multi_toc)
 493             {
 494               toc_section = bfd_get_section_by_name (link_info.output_bfd,
 495                                                      ".got");
 496               if (toc_section != NULL)
 497                 lang_for_each_statement (build_toc_list);
 498             }
 499
 500           if (ppc64_elf_layout_multitoc (&link_info)
 501               && !no_multi_toc
 502               && toc_section != NULL)
 503             lang_for_each_statement (build_toc_list);
 504
 505           ppc64_elf_finish_multitoc_partition (&link_info);
 506
 507           lang_for_each_statement (build_section_lists);
 508
 509           if (!ppc64_elf_check_init_fini (&link_info))
 510             einfo ("%P: .init/.fini fragments use differing TOC pointers\n");
 511
 512           /* Call into the BFD backend to do the real work.  */
 513           if (!ppc64_elf_size_stubs (&link_info, group_size,
 514                                      plt_static_chain, plt_thread_safe,
 515                                      plt_stub_align))
 516             einfo ("%X%P: can not size stub section: %E\n");
 517         }
 518     }
 519
 520   if (need_laying_out != -1)
 521     {
 522       gld${EMULATION_NAME}_map_segments (need_laying_out);
 523
 524       if (!link_info.relocatable)
 525         ppc64_elf_set_toc (&link_info, link_info.output_bfd);
 526     }
 527 }
 528
 529
 530 /* Final emulation specific call.  */
 531
 532 static void
 533 gld${EMULATION_NAME}_finish (void)
 534 {
 535   /* e_entry on PowerPC64 points to the function descriptor for
 536      _start.  If _start is missing, default to the first function
 537      descriptor in the .opd section.  */
 538   entry_section = ".opd";
 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${EMULATION_NAME}_new_vers_pattern (struct bfd_elf_version_expr *entry)
 589 {
 590   struct bfd_elf_version_expr *dot_entry;
 591   unsigned int len;
 592   char *dot_pat;
 593
 594   if (!dotsyms
 595       || entry->pattern[0] == '.'
 596       || (!entry->literal && entry->pattern[0] == '*'))
 597     return entry;
 598
 599   dot_entry = xmalloc (sizeof *dot_entry);
 600   *dot_entry = *entry;
 601   dot_entry->next = entry;
 602   len = strlen (entry->pattern) + 2;
 603   dot_pat = xmalloc (len);
 604   dot_pat[0] = '.';
 605   memcpy (dot_pat + 1, entry->pattern, len - 1);
 606   dot_entry->pattern = dot_pat;
 607   dot_entry->script = 1;
 608   return dot_entry;
 609 }
 610
 611
 612 /* Avoid processing the fake stub_file in vercheck, stat_needed and
 613    check_needed routines.  */
 614
 615 static void (*real_func) (lang_input_statement_type *);
 616
 617 static void ppc_for_each_input_file_wrapper (lang_input_statement_type *l)
 618 {
 619   if (l != stub_file)
 620     (*real_func) (l);
 621 }
 622
 623 static void
 624 ppc_lang_for_each_input_file (void (*func) (lang_input_statement_type *))
 625 {
 626   real_func = func;
 627   lang_for_each_input_file (&ppc_for_each_input_file_wrapper);
 628 }
 629
 630 #define lang_for_each_input_file ppc_lang_for_each_input_file
 631
 632 EOF
 633
 634 if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
 635   fragment <<EOF
 636 /* Special handling for embedded SPU executables.  */
 637 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 638 static bfd_boolean gld${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${EMULATION_NAME}_load_symbols (entry);
 647 }
 648 EOF
 649 LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file
 650 fi
 651
 652 # Define some shell vars to insert bits of code into the standard elf
 653 # parse_args and list_options functions.
 654 #
 655 PARSE_AND_LIST_PROLOGUE=${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_PLT_THREAD_SAFE          (OPTION_NO_PLT_STATIC_CHAIN + 1)
 660 #define OPTION_NO_PLT_THREAD_SAFE       (OPTION_PLT_THREAD_SAFE + 1)
 661 #define OPTION_PLT_ALIGN                (OPTION_NO_PLT_THREAD_SAFE + 1)
 662 #define OPTION_NO_PLT_ALIGN             (OPTION_PLT_ALIGN + 1)
 663 #define OPTION_STUBSYMS                 (OPTION_NO_PLT_ALIGN + 1)
 664 #define OPTION_NO_STUBSYMS              (OPTION_STUBSYMS + 1)
 665 #define OPTION_DOTSYMS                  (OPTION_NO_STUBSYMS + 1)
 666 #define OPTION_NO_DOTSYMS               (OPTION_DOTSYMS + 1)
 667 #define OPTION_NO_TLS_OPT               (OPTION_NO_DOTSYMS + 1)
 668 #define OPTION_NO_TLS_GET_ADDR_OPT      (OPTION_NO_TLS_OPT + 1)
 669 #define OPTION_NO_OPD_OPT               (OPTION_NO_TLS_GET_ADDR_OPT + 1)
 670 #define OPTION_NO_TOC_OPT               (OPTION_NO_OPD_OPT + 1)
 671 #define OPTION_NO_MULTI_TOC             (OPTION_NO_TOC_OPT + 1)
 672 #define OPTION_NO_TOC_SORT              (OPTION_NO_MULTI_TOC + 1)
 673 #define OPTION_NON_OVERLAPPING_OPD      (OPTION_NO_TOC_SORT + 1)
 674 '
 675
 676 PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
 677   { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE },
 678   { "plt-static-chain", no_argument, NULL, OPTION_PLT_STATIC_CHAIN },
 679   { "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN },
 680   { "plt-thread-safe", no_argument, NULL, OPTION_PLT_THREAD_SAFE },
 681   { "no-plt-thread-safe", no_argument, NULL, OPTION_NO_PLT_THREAD_SAFE },
 682   { "plt-align", optional_argument, NULL, OPTION_PLT_ALIGN },
 683   { "no-plt-align", no_argument, NULL, OPTION_NO_PLT_ALIGN },
 684   { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
 685   { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
 686   { "dotsyms", no_argument, NULL, OPTION_DOTSYMS },
 687   { "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS },
 688   { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
 689   { "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },
 690   { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT },
 691   { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT },
 692   { "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC },
 693   { "no-toc-sort", no_argument, NULL, OPTION_NO_TOC_SORT },
 694   { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD },
 695 '
 696
 697 PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'
 698   fprintf (file, _("\
 699   --stub-group-size=N         Maximum size of a group of input sections that\n\
 700                                 can be handled by one stub section.  A negative\n\
 701                                 value locates all stubs before their branches\n\
 702                                 (with a group size of -N), while a positive\n\
 703                                 value allows two groups of input sections, one\n\
 704                                 before, and one after each stub section.\n\
 705                                 Values of +/-1 indicate the linker should\n\
 706                                 choose suitable defaults.\n"
 707                    ));
 708   fprintf (file, _("\
 709   --plt-static-chain          PLT call stubs should load r11.${DEFAULT_PLT_STATIC_CHAIN- (default)}\n"
 710                    ));
 711   fprintf (file, _("\
 712   --no-plt-static-chain       PLT call stubs should not load r11.${DEFAULT_PLT_STATIC_CHAIN+ (default)}\n"
 713                    ));
 714   fprintf (file, _("\
 715   --plt-thread-safe           PLT call stubs with load-load barrier.\n"
 716                    ));
 717   fprintf (file, _("\
 718   --no-plt-thread-safe        PLT call stubs without barrier.\n"
 719                    ));
 720   fprintf (file, _("\
 721   --plt-align [=<align>]      Align PLT call stubs to fit cache lines.\n"
 722                    ));
 723   fprintf (file, _("\
 724   --no-plt-align              Dont'\''t align individual PLT call stubs.\n"
 725                    ));
 726   fprintf (file, _("\
 727   --emit-stub-syms            Label linker stubs with a symbol.\n"
 728                    ));
 729   fprintf (file, _("\
 730   --no-emit-stub-syms         Don'\''t label linker stubs with a symbol.\n"
 731                    ));
 732   fprintf (file, _("\
 733   --dotsyms                   For every version pattern \"foo\" in a version\n\
 734                                 script, add \".foo\" so that function code\n\
 735                                 symbols are treated the same as function\n\
 736                                 descriptor symbols.  Defaults to on.\n"
 737                    ));
 738   fprintf (file, _("\
 739   --no-dotsyms                Don'\''t do anything special in version scripts.\n"
 740                    ));
 741   fprintf (file, _("\
 742   --no-tls-optimize           Don'\''t try to optimize TLS accesses.\n"
 743                    ));
 744   fprintf (file, _("\
 745   --no-tls-get-addr-optimize  Don'\''t use a special __tls_get_addr call.\n"
 746                    ));
 747   fprintf (file, _("\
 748   --no-opd-optimize           Don'\''t optimize the OPD section.\n"
 749                    ));
 750   fprintf (file, _("\
 751   --no-toc-optimize           Don'\''t optimize the TOC section.\n"
 752                    ));
 753   fprintf (file, _("\
 754   --no-multi-toc              Disallow automatic multiple toc sections.\n"
 755                    ));
 756   fprintf (file, _("\
 757   --no-toc-sort               Don'\''t sort TOC and GOT sections.\n"
 758                    ));
 759   fprintf (file, _("\
 760   --non-overlapping-opd       Canonicalize .opd, so that there are no\n\
 761                                 overlapping .opd entries.\n"
 762                    ));
 763 '
 764
 765 PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}'
 766     case OPTION_STUBGROUP_SIZE:
 767       {
 768         const char *end;
 769         group_size = bfd_scan_vma (optarg, &end, 0);
 770         if (*end)
 771           einfo (_("%P%F: invalid number `%s'\''\n"), optarg);
 772       }
 773       break;
 774
 775     case OPTION_PLT_STATIC_CHAIN:
 776       plt_static_chain = 1;
 777       break;
 778
 779     case OPTION_NO_PLT_STATIC_CHAIN:
 780       plt_static_chain = 0;
 781       break;
 782
 783     case OPTION_PLT_THREAD_SAFE:
 784       plt_thread_safe = 1;
 785       break;
 786
 787     case OPTION_NO_PLT_THREAD_SAFE:
 788       plt_thread_safe = 0;
 789       break;
 790
 791     case OPTION_PLT_ALIGN:
 792       if (optarg != NULL)
 793         {
 794           char *end;
 795           unsigned long val = strtoul (optarg, &end, 0);
 796           if (*end || val > 8)
 797             einfo (_("%P%F: invalid --plt-align `%s'\''\n"), optarg);
 798           plt_stub_align = val;
 799         }
 800       else
 801         plt_stub_align = 5;
 802       break;
 803
 804     case OPTION_NO_PLT_ALIGN:
 805       plt_stub_align = 0;
 806       break;
 807
 808     case OPTION_STUBSYMS:
 809       emit_stub_syms = 1;
 810       break;
 811
 812     case OPTION_NO_STUBSYMS:
 813       emit_stub_syms = 0;
 814       break;
 815
 816     case OPTION_DOTSYMS:
 817       dotsyms = 1;
 818       break;
 819
 820     case OPTION_NO_DOTSYMS:
 821       dotsyms = 0;
 822       break;
 823
 824     case OPTION_NO_TLS_OPT:
 825       no_tls_opt = 1;
 826       break;
 827
 828     case OPTION_NO_TLS_GET_ADDR_OPT:
 829       no_tls_get_addr_opt = 1;
 830       break;
 831
 832     case OPTION_NO_OPD_OPT:
 833       no_opd_opt = 1;
 834       break;
 835
 836     case OPTION_NO_TOC_OPT:
 837       no_toc_opt = 1;
 838       break;
 839
 840     case OPTION_NO_MULTI_TOC:
 841       no_multi_toc = 1;
 842       break;
 843
 844     case OPTION_NO_TOC_SORT:
 845       no_toc_sort = 1;
 846       break;
 847
 848     case OPTION_NON_OVERLAPPING_OPD:
 849       non_overlapping_opd = 1;
 850       break;
 851
 852     case OPTION_TRADITIONAL_FORMAT:
 853       no_tls_opt = 1;
 854       no_tls_get_addr_opt = 1;
 855       no_opd_opt = 1;
 856       no_toc_opt = 1;
 857       no_multi_toc = 1;
 858       no_toc_sort = 1;
 859       plt_static_chain = 1;
 860       return FALSE;
 861 '
 862
 863 # Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation
 864 #
 865 LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
 866 LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
 867 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
 868 LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements
 869 LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern