ld/emultempl/beos.em

   1 # This shell script emits a C file. -*- C -*-
   2 # It does some substitutions.
   3 if [ -z "$MACHINE" ]; then
   4   OUTPUT_ARCH=${ARCH}
   5 else
   6   OUTPUT_ARCH=${ARCH}:${MACHINE}
   7 fi
   8 fragment <<EOF
   9 /* This file is part of GLD, the Gnu Linker.
  10    Copyright (C) 1995-2016 Free Software Foundation, Inc.
  11
  12    This file is part of the GNU Binutils.
  13
  14    This program is free software; you can redistribute it and/or modify
  15    it under the terms of the GNU General Public License as published by
  16    the Free Software Foundation; either version 3 of the License, or
  17    (at your option) any later version.
  18
  19    This program is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22    GNU General Public License for more details.
  23
  24    You should have received a copy of the GNU General Public License
  25    along with this program; if not, write to the Free Software
  26    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  27    MA 02110-1301, USA.  */
  28
  29
  30 /* For WINDOWS_NT */
  31 /* The original file generated returned different default scripts depending
  32    on whether certain switches were set, but these switches pertain to the
  33    Linux system and that particular version of coff.  In the NT case, we
  34    only determine if the subsystem is console or windows in order to select
  35    the correct entry point by default. */
  36
  37 #include "sysdep.h"
  38 #include "bfd.h"
  39 #include "bfdlink.h"
  40 #include "getopt.h"
  41 #include "libiberty.h"
  42 #include "filenames.h"
  43 #include "ld.h"
  44 #include "ldmain.h"
  45 #include "ldexp.h"
  46 #include "ldlang.h"
  47 #include "ldfile.h"
  48 #include "ldemul.h"
  49 #include <ldgram.h>
  50 #include "ldlex.h"
  51 #include "ldmisc.h"
  52 #include "ldctor.h"
  53 #include "coff/internal.h"
  54 #include "../bfd/libcoff.h"
  55
  56 #define TARGET_IS_${EMULATION_NAME}
  57
  58 static struct internal_extra_pe_aouthdr pe;
  59 static int dll;
  60
  61 extern const char *output_filename;
  62
  63 static void
  64 gld_${EMULATION_NAME}_before_parse (void)
  65 {
  66   ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
  67   output_filename = "a.exe";
  68 }
  69 \f
  70 /* PE format extra command line options.  */
  71
  72 /* Used for setting flags in the PE header. */
  73 #define OPTION_BASE_FILE                (300  + 1)
  74 #define OPTION_DLL                      (OPTION_BASE_FILE + 1)
  75 #define OPTION_FILE_ALIGNMENT           (OPTION_DLL + 1)
  76 #define OPTION_IMAGE_BASE               (OPTION_FILE_ALIGNMENT + 1)
  77 #define OPTION_MAJOR_IMAGE_VERSION      (OPTION_IMAGE_BASE + 1)
  78 #define OPTION_MAJOR_OS_VERSION         (OPTION_MAJOR_IMAGE_VERSION + 1)
  79 #define OPTION_MAJOR_SUBSYSTEM_VERSION  (OPTION_MAJOR_OS_VERSION + 1)
  80 #define OPTION_MINOR_IMAGE_VERSION      (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
  81 #define OPTION_MINOR_OS_VERSION         (OPTION_MINOR_IMAGE_VERSION + 1)
  82 #define OPTION_MINOR_SUBSYSTEM_VERSION  (OPTION_MINOR_OS_VERSION + 1)
  83 #define OPTION_SECTION_ALIGNMENT        (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
  84 #define OPTION_STACK                    (OPTION_SECTION_ALIGNMENT + 1)
  85 #define OPTION_SUBSYSTEM                (OPTION_STACK + 1)
  86 #define OPTION_HEAP                     (OPTION_SUBSYSTEM + 1)
  87
  88 static void
  89 gld${EMULATION_NAME}_add_options
  90   (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
  91    struct option **longopts, int nrl ATTRIBUTE_UNUSED,
  92    struct option **really_longopts ATTRIBUTE_UNUSED)
  93 {
  94   static const struct option xtra_long[] = {
  95     /* PE options */
  96     {"base-file", required_argument, NULL, OPTION_BASE_FILE},
  97     {"dll", no_argument, NULL, OPTION_DLL},
  98     {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
  99     {"heap", required_argument, NULL, OPTION_HEAP},
 100     {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
 101     {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
 102     {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
 103     {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
 104     {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
 105     {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
 106     {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
 107     {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
 108     {"stack", required_argument, NULL, OPTION_STACK},
 109     {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
 110     {NULL, no_argument, NULL, 0}
 111   };
 112
 113   *longopts = (struct option *)
 114     xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
 115   memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
 116 }
 117
 118
 119 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
 120    parameters which may be input from the command line */
 121
 122 typedef struct {
 123   void *ptr;
 124   int size;
 125   int value;
 126   char *symbol;
 127   int inited;
 128 } definfo;
 129
 130 #define D(field,symbol,def)  {&pe.field,sizeof(pe.field), def, symbol,0}
 131
 132 static definfo init[] =
 133 {
 134   /* imagebase must be first */
 135 #define IMAGEBASEOFF 0
 136   D(ImageBase,"__image_base__", BEOS_EXE_IMAGE_BASE),
 137 #define DLLOFF 1
 138   {&dll, sizeof(dll), 0, "__dll__", 0},
 139   D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
 140   D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
 141   D(MajorOperatingSystemVersion,"__major_os_version__", 4),
 142   D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
 143   D(MajorImageVersion,"__major_image_version__", 1),
 144   D(MinorImageVersion,"__minor_image_version__", 0),
 145   D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
 146   D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
 147   D(Subsystem,"__subsystem__", 3),
 148   D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000),
 149   D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
 150   D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
 151   D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
 152   D(LoaderFlags,"__loader_flags__", 0x0),
 153   { NULL, 0, 0, NULL, 0 }
 154 };
 155
 156
 157 static void
 158 set_pe_name (char *name, long val)
 159 {
 160   int i;
 161   /* Find the name and set it. */
 162   for (i = 0; init[i].ptr; i++)
 163     {
 164       if (strcmp (name, init[i].symbol) == 0)
 165         {
 166           init[i].value = val;
 167           init[i].inited = 1;
 168           return;
 169         }
 170     }
 171   abort();
 172 }
 173
 174
 175 static void
 176 set_pe_subsystem (void)
 177 {
 178   const char *sver;
 179   int len;
 180   int i;
 181   static const struct
 182     {
 183       const char *name;
 184       const int value;
 185       const char *entry;
 186     }
 187   v[] =
 188     {
 189       { "native", 1, "_NtProcessStartup" },
 190       { "windows", 2, "_WinMainCRTStartup" },
 191       { "wwindows", 2, "_wWinMainCRTStartup" },
 192       { "console", 3, "_mainCRTStartup" },
 193       { "wconsole", 3, "_wmainCRTStartup" },
 194       { "posix", 7, "___PosixProcessStartup"},
 195       { 0, 0, 0 }
 196     };
 197
 198   sver = strchr (optarg, ':');
 199   if (sver == NULL)
 200     len = strlen (optarg);
 201   else
 202     {
 203       char *end;
 204
 205       len = sver - optarg;
 206       set_pe_name ("__major_subsystem_version__",
 207                    strtoul (sver + 1, &end, 0));
 208       if (*end == '.')
 209         set_pe_name ("__minor_subsystem_version__",
 210                      strtoul (end + 1, &end, 0));
 211       if (*end != '\0')
 212         einfo ("%P: warning: bad version number in -subsystem option\n");
 213     }
 214
 215   for (i = 0; v[i].name; i++)
 216     {
 217       if (strncmp (optarg, v[i].name, len) == 0
 218           && v[i].name[len] == '\0')
 219         {
 220           set_pe_name ("__subsystem__", v[i].value);
 221
 222           /* If the subsystem is windows, we use a different entry
 223              point.  */
 224           lang_default_entry (v[i].entry);
 225
 226           return;
 227         }
 228     }
 229   einfo ("%P%F: invalid subsystem type %s\n", optarg);
 230 }
 231
 232
 233 static void
 234 set_pe_value (char *name)
 235 {
 236   char *end;
 237   set_pe_name (name,  strtoul (optarg, &end, 0));
 238   if (end == optarg)
 239     {
 240       einfo ("%P%F: invalid hex number for PE parameter '%s'\n", optarg);
 241     }
 242
 243   optarg = end;
 244 }
 245
 246 static void
 247 set_pe_stack_heap (char *resname, char *comname)
 248 {
 249   set_pe_value (resname);
 250   if (*optarg == ',')
 251     {
 252       optarg++;
 253       set_pe_value (comname);
 254     }
 255   else if (*optarg)
 256     {
 257       einfo ("%P%F: strange hex info for PE parameter '%s'\n", optarg);
 258     }
 259 }
 260
 261
 262 static bfd_boolean
 263 gld${EMULATION_NAME}_handle_option (int optc)
 264 {
 265   switch (optc)
 266     {
 267     default:
 268       return FALSE;
 269
 270     case OPTION_BASE_FILE:
 271       link_info.base_file = fopen (optarg, FOPEN_WB);
 272       if (link_info.base_file == NULL)
 273         einfo (_("%F%P: cannot open base file %s\n"), optarg);
 274       break;
 275
 276       /* PE options */
 277     case OPTION_HEAP:
 278       set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
 279       break;
 280     case OPTION_STACK:
 281       set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
 282       break;
 283     case OPTION_SUBSYSTEM:
 284       set_pe_subsystem ();
 285       break;
 286     case OPTION_MAJOR_OS_VERSION:
 287       set_pe_value ("__major_os_version__");
 288       break;
 289     case OPTION_MINOR_OS_VERSION:
 290       set_pe_value ("__minor_os_version__");
 291       break;
 292     case OPTION_MAJOR_SUBSYSTEM_VERSION:
 293       set_pe_value ("__major_subsystem_version__");
 294       break;
 295     case OPTION_MINOR_SUBSYSTEM_VERSION:
 296       set_pe_value ("__minor_subsystem_version__");
 297       break;
 298     case OPTION_MAJOR_IMAGE_VERSION:
 299       set_pe_value ("__major_image_version__");
 300       break;
 301     case OPTION_MINOR_IMAGE_VERSION:
 302       set_pe_value ("__minor_image_version__");
 303       break;
 304     case OPTION_FILE_ALIGNMENT:
 305       set_pe_value ("__file_alignment__");
 306       break;
 307     case OPTION_SECTION_ALIGNMENT:
 308       set_pe_value ("__section_alignment__");
 309       break;
 310     case OPTION_DLL:
 311       set_pe_name ("__dll__", 1);
 312       break;
 313     case OPTION_IMAGE_BASE:
 314       set_pe_value ("__image_base__");
 315       break;
 316     }
 317   return TRUE;
 318 }
 319 \f
 320 /* Assign values to the special symbols before the linker script is
 321    read.  */
 322
 323 static void
 324 gld_${EMULATION_NAME}_set_symbols (void)
 325 {
 326   /* Run through and invent symbols for all the
 327      names and insert the defaults. */
 328   int j;
 329
 330   if (!init[IMAGEBASEOFF].inited)
 331     {
 332       if (bfd_link_relocatable (&link_info))
 333         init[IMAGEBASEOFF].value = 0;
 334       else if (init[DLLOFF].value)
 335         init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE;
 336       else
 337         init[IMAGEBASEOFF].value = BEOS_EXE_IMAGE_BASE;
 338     }
 339
 340   /* Don't do any symbol assignments if this is a relocatable link.  */
 341   if (bfd_link_relocatable (&link_info))
 342     return;
 343
 344   /* Glue the assignments into the abs section */
 345   push_stat_ptr (&abs_output_section->children);
 346
 347   for (j = 0; init[j].ptr; j++)
 348     {
 349       long val = init[j].value;
 350       lang_add_assignment (exp_assign (init[j].symbol, exp_intop (val),
 351                                        FALSE));
 352       if (init[j].size == sizeof(short))
 353         *(short *)init[j].ptr = val;
 354       else if (init[j].size == sizeof(int))
 355         *(int *)init[j].ptr = val;
 356       else if (init[j].size == sizeof(long))
 357         *(long *)init[j].ptr = val;
 358       /* This might be a long long or other special type.  */
 359       else if (init[j].size == sizeof(bfd_vma))
 360         *(bfd_vma *)init[j].ptr = val;
 361       else      abort();
 362     }
 363   /* Restore the pointer. */
 364   pop_stat_ptr ();
 365
 366   if (pe.FileAlignment >
 367       pe.SectionAlignment)
 368     {
 369       einfo ("%P: warning, file alignment > section alignment.\n");
 370     }
 371 }
 372
 373 static void
 374 gld_${EMULATION_NAME}_after_open (void)
 375 {
 376   after_open_default ();
 377
 378   /* Pass the wacky PE command line options into the output bfd.
 379      FIXME: This should be done via a function, rather than by
 380      including an internal BFD header.  */
 381   if (!coff_data(link_info.output_bfd)->pe)
 382     {
 383       einfo ("%F%P: PE operations on non PE file.\n");
 384     }
 385
 386   pe_data(link_info.output_bfd)->pe_opthdr = pe;
 387   pe_data(link_info.output_bfd)->dll = init[DLLOFF].value;
 388
 389 }
 390 \f
 391 /* Callback functions for qsort in sort_sections. */
 392
 393 static int
 394 sort_by_file_name (const void *a, const void *b)
 395 {
 396   const lang_statement_union_type *const *ra = a;
 397   const lang_statement_union_type *const *rb = b;
 398   int i, a_sec, b_sec;
 399
 400   i = filename_cmp ((*ra)->input_section.section->owner->my_archive->filename,
 401                     (*rb)->input_section.section->owner->my_archive->filename);
 402   if (i != 0)
 403     return i;
 404
 405   i = filename_cmp ((*ra)->input_section.section->owner->filename,
 406                     (*rb)->input_section.section->owner->filename);
 407   if (i != 0)
 408     return i;
 409   /* the tail idata4/5 are the only ones without relocs to an
 410      idata$6 section unless we are importing by ordinal,
 411      so sort them to last to terminate the IAT
 412      and HNT properly. if no reloc this one is import by ordinal
 413      so we have to sort by section contents */
 414
 415   if ( ((*ra)->input_section.section->reloc_count + (*rb)->input_section.section->reloc_count) )
 416     {
 417        i =  (((*ra)->input_section.section->reloc_count >
 418                  (*rb)->input_section.section->reloc_count) ? -1 : 0);
 419        if ( i != 0)
 420          return i;
 421
 422         return  (((*ra)->input_section.section->reloc_count >
 423                  (*rb)->input_section.section->reloc_count) ? 0 : 1);
 424     }
 425   else
 426     {
 427        if ( (strcmp( (*ra)->input_section.section->name, ".idata$6") == 0) )
 428           return 0; /* don't sort .idata$6 or .idata$7 FIXME dlltool eliminate .idata$7 */
 429
 430        if (! bfd_get_section_contents ((*ra)->input_section.section->owner,
 431          (*ra)->input_section.section, &a_sec, (file_ptr) 0, (bfd_size_type)sizeof(a_sec)))
 432             einfo ("%F%B: Can't read contents of section .idata: %E\n",
 433                  (*ra)->input_section.section->owner);
 434
 435        if (! bfd_get_section_contents ((*rb)->input_section.section->owner,
 436         (*rb)->input_section.section, &b_sec, (file_ptr) 0, (bfd_size_type)sizeof(b_sec) ))
 437            einfo ("%F%B: Can't read contents of section .idata: %E\n",
 438                 (*rb)->input_section.section->owner);
 439
 440       i =  ((a_sec < b_sec) ? -1 : 0);
 441       if ( i != 0)
 442         return i;
 443       return  ((a_sec < b_sec) ? 0 : 1);
 444    }
 445 return 0;
 446 }
 447
 448 static int
 449 sort_by_section_name (const void *a, const void *b)
 450 {
 451   const lang_statement_union_type *const *ra = a;
 452   const lang_statement_union_type *const *rb = b;
 453   int i;
 454   i = strcmp ((*ra)->input_section.section->name,
 455               (*rb)->input_section.section->name);
 456   /* This is a hack to make .stab and .stabstr last, so we don't have
 457      to fix strip/objcopy for .reloc sections.
 458      FIXME stripping images with a .rsrc section still needs to be fixed.  */
 459   if (i != 0)
 460     {
 461       if ((CONST_STRNEQ ((*ra)->input_section.section->name, ".stab"))
 462            && (! CONST_STRNEQ ((*rb)->input_section.section->name, ".stab")))
 463          return 1;
 464     }
 465   return i;
 466 }
 467
 468 /* Subroutine of sort_sections to a contiguous subset of a list of sections.
 469    NEXT_AFTER is the element after the last one to sort.
 470    The result is a pointer to the last element's "next" pointer.  */
 471
 472 static lang_statement_union_type **
 473 sort_sections_1 (lang_statement_union_type **startptr,
 474                  lang_statement_union_type *next_after,
 475                  int count,
 476                  int (*sort_func) (const void *, const void *))
 477 {
 478   lang_statement_union_type **vec;
 479   lang_statement_union_type *p;
 480   int i;
 481   lang_statement_union_type **ret;
 482
 483   if (count == 0)
 484     return startptr;
 485
 486   vec = ((lang_statement_union_type **)
 487          xmalloc (count * sizeof (lang_statement_union_type *)));
 488
 489   for (p = *startptr, i = 0; i < count; i++, p = p->header.next)
 490     vec[i] = p;
 491
 492   qsort (vec, count, sizeof (vec[0]), sort_func);
 493
 494   /* Fill in the next pointers again. */
 495   *startptr = vec[0];
 496   for (i = 0; i < count - 1; i++)
 497     vec[i]->header.next = vec[i + 1];
 498   vec[i]->header.next = next_after;
 499   ret = &vec[i]->header.next;
 500   free (vec);
 501   return ret;
 502 }
 503
 504 /* Sort the .idata\$foo input sections of archives into filename order.
 505    The reason is so dlltool can arrange to have the pe dll import information
 506    generated correctly - the head of the list goes into dh.o, the tail into
 507    dt.o, and the guts into ds[nnnn].o.  Note that this is only needed for the
 508    .idata section.
 509    FIXME: This may no longer be necessary with grouped sections.  Instead of
 510    sorting on dh.o, ds[nnnn].o, dt.o, one could, for example, have dh.o use
 511    .idata\$4h, have ds[nnnn].o use .idata\$4s[nnnn], and have dt.o use .idata\$4t.
 512    This would have to be elaborated upon to handle multiple dll's
 513    [assuming such an eloboration is possible of course].
 514
 515    We also sort sections in '\$' wild statements.  These are created by the
 516    place_orphans routine to implement grouped sections.  */
 517
 518 static void
 519 sort_sections (lang_statement_union_type *s)
 520 {
 521   for (; s ; s = s->header.next)
 522     switch (s->header.type)
 523       {
 524       case lang_output_section_statement_enum:
 525         sort_sections (s->output_section_statement.children.head);
 526         break;
 527       case lang_wild_statement_enum:
 528         {
 529           lang_statement_union_type **p = &s->wild_statement.children.head;
 530           struct wildcard_list *sec;
 531
 532           for (sec = s->wild_statement.section_list; sec; sec = sec->next)
 533             {
 534               /* Is this the .idata section?  */
 535               if (sec->spec.name != NULL
 536                   && CONST_STRNEQ (sec->spec.name, ".idata"))
 537                 {
 538                   /* Sort the children.  We want to sort any objects in
 539                      the same archive.  In order to handle the case of
 540                      including a single archive multiple times, we sort
 541                      all the children by archive name and then by object
 542                      name.  After sorting them, we re-thread the pointer
 543                      chain.  */
 544
 545                   while (*p)
 546                     {
 547                       lang_statement_union_type *start = *p;
 548                       if (start->header.type != lang_input_section_enum
 549                           || !start->input_section.section->owner->my_archive)
 550                         p = &(start->header.next);
 551                       else
 552                         {
 553                           lang_statement_union_type *end;
 554                           int count;
 555
 556                           for (end = start, count = 0;
 557                                end && (end->header.type
 558                                        == lang_input_section_enum);
 559                                end = end->header.next)
 560                             count++;
 561
 562                           p = sort_sections_1 (p, end, count,
 563                                                sort_by_file_name);
 564                         }
 565                     }
 566                   break;
 567                 }
 568
 569               /* If this is a collection of grouped sections, sort them.
 570                  The linker script must explicitly mention "*(.foo\$)" or
 571                  "*(.foo\$*)".  Don't sort them if \$ is not the last
 572                  character (not sure if this is really useful, but it
 573                  allows explicitly mentioning some \$ sections and letting
 574                  the linker handle the rest).  */
 575               if (sec->spec.name != NULL)
 576                 {
 577                   char *q = strchr (sec->spec.name, '\$');
 578
 579                   if (q != NULL
 580                       && (q[1] == '\0'
 581                           || (q[1] == '*' && q[2] == '\0')))
 582                     {
 583                       lang_statement_union_type *end;
 584                       int count;
 585
 586                       for (end = *p, count = 0; end; end = end->header.next)
 587                         {
 588                           if (end->header.type != lang_input_section_enum)
 589                             abort ();
 590                           count++;
 591                         }
 592                       (void) sort_sections_1 (p, end, count,
 593                                               sort_by_section_name);
 594                     }
 595                   break;
 596                 }
 597             }
 598         }
 599         break;
 600       default:
 601         break;
 602       }
 603 }
 604
 605 static void
 606 gld_${EMULATION_NAME}_before_allocation (void)
 607 {
 608 #ifdef TARGET_IS_ppcpe
 609   /* Here we rummage through the found bfds to collect toc information */
 610   {
 611     LANG_FOR_EACH_INPUT_STATEMENT (is)
 612       {
 613         if (!ppc_process_before_allocation(is->the_bfd, &link_info))
 614           {
 615             einfo("Errors encountered processing file %s\n", is->filename);
 616           }
 617       }
 618   }
 619
 620   /* We have seen it all. Allocate it, and carry on */
 621   ppc_allocate_toc_section (&link_info);
 622 #else
 623 #ifdef TARGET_IS_armpe
 624   /* FIXME: we should be able to set the size of the interworking stub
 625      section.
 626
 627      Here we rummage through the found bfds to collect glue
 628      information.  FIXME: should this be based on a command line
 629      option?  krk@cygnus.com */
 630   {
 631     LANG_FOR_EACH_INPUT_STATEMENT (is)
 632       {
 633         if (!arm_process_before_allocation (is->the_bfd, & link_info))
 634           {
 635             einfo ("Errors encountered processing file %s", is->filename);
 636           }
 637       }
 638   }
 639
 640   /* We have seen it all. Allocate it, and carry on */
 641   arm_allocate_interworking_sections (& link_info);
 642 #endif /* TARGET_IS_armpe */
 643 #endif /* TARGET_IS_ppcpe */
 644
 645   sort_sections (stat_ptr->head);
 646
 647   before_allocation_default ();
 648 }
 649 \f
 650 /* Place an orphan section.  We use this to put sections with a '\$' in them
 651    into the right place.  Any section with a '\$' in them (e.g. .text\$foo)
 652    gets mapped to the output section with everything from the '\$' on stripped
 653    (e.g. .text).
 654    See the Microsoft Portable Executable and Common Object File Format
 655    Specification 4.1, section 4.2, Grouped Sections.
 656
 657    FIXME: This is now handled by the linker script using wildcards,
 658    but I'm leaving this here in case we want to enable it for sections
 659    which are not mentioned in the linker script.  */
 660
 661 static lang_output_section_statement_type *
 662 gld${EMULATION_NAME}_place_orphan (asection *s,
 663                                    const char *secname,
 664                                    int constraint)
 665 {
 666   char *output_secname, *ps;
 667   lang_output_section_statement_type *os;
 668   lang_statement_union_type *l;
 669
 670   if ((s->flags & SEC_ALLOC) == 0)
 671     return NULL;
 672
 673   /* Don't process grouped sections unless doing a final link.
 674      If they're marked as COMDAT sections, we don't want .text\$foo to
 675      end up in .text and then have .text disappear because it's marked
 676      link-once-discard.  */
 677   if (bfd_link_relocatable (&link_info))
 678     return NULL;
 679
 680   /* Everything from the '\$' on gets deleted so don't allow '\$' as the
 681      first character.  */
 682   if (*secname == '\$')
 683     einfo ("%P%F: section %s has '\$' as first character\n", secname);
 684   if (strchr (secname + 1, '\$') == NULL)
 685     return NULL;
 686
 687   /* Look up the output section.  The Microsoft specs say sections names in
 688      image files never contain a '\$'.  Fortunately, lang_..._lookup creates
 689      the section if it doesn't exist.  */
 690   output_secname = xstrdup (secname);
 691   ps = strchr (output_secname + 1, '\$');
 692   *ps = 0;
 693   os = lang_output_section_statement_lookup (output_secname, constraint, TRUE);
 694
 695   /* Find the '\$' wild statement for this section.  We currently require the
 696      linker script to explicitly mention "*(.foo\$)".
 697      FIXME: ppcpe.sc has .CRT\$foo in the .rdata section.  According to the
 698      Microsoft docs this isn't correct so it's not (currently) handled.  */
 699
 700   ps[0] = '\$';
 701   ps[1] = 0;
 702   for (l = os->children.head; l; l = l->header.next)
 703     if (l->header.type == lang_wild_statement_enum)
 704       {
 705         struct wildcard_list *sec;
 706
 707         for (sec = l->wild_statement.section_list; sec; sec = sec->next)
 708           if (sec->spec.name && strcmp (sec->spec.name, output_secname) == 0)
 709             break;
 710         if (sec)
 711           break;
 712       }
 713   ps[0] = 0;
 714   if (l == NULL)
 715     einfo ("%P%F: *(%s\$) missing from linker script\n", output_secname);
 716
 717   /* Link the input section in and we're done for now.
 718      The sections still have to be sorted, but that has to wait until
 719      all such sections have been processed by us.  The sorting is done by
 720      sort_sections.  */
 721   lang_add_section (&l->wild_statement.children, s, NULL, os);
 722
 723   return os;
 724 }
 725 \f
 726 static char *
 727 gld_${EMULATION_NAME}_get_script (int *isfile)
 728 EOF
 729 # Scripts compiled in.
 730 # sed commands to quote an ld script as a C string.
 731 sc="-f stringify.sed"
 732
 733 fragment <<EOF
 734 {
 735   *isfile = 0;
 736
 737   if (bfd_link_relocatable (&link_info) && config.build_constructors)
 738     return
 739 EOF
 740 sed $sc ldscripts/${EMULATION_NAME}.xu                 >> e${EMULATION_NAME}.c
 741 echo '  ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
 742 sed $sc ldscripts/${EMULATION_NAME}.xr                 >> e${EMULATION_NAME}.c
 743 echo '  ; else if (!config.text_read_only) return'     >> e${EMULATION_NAME}.c
 744 sed $sc ldscripts/${EMULATION_NAME}.xbn                >> e${EMULATION_NAME}.c
 745 echo '  ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
 746 sed $sc ldscripts/${EMULATION_NAME}.xn                 >> e${EMULATION_NAME}.c
 747 echo '  ; else return'                                 >> e${EMULATION_NAME}.c
 748 sed $sc ldscripts/${EMULATION_NAME}.x                  >> e${EMULATION_NAME}.c
 749 echo '; }'                                             >> e${EMULATION_NAME}.c
 750
 751 fragment <<EOF
 752
 753
 754 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
 755 {
 756   gld_${EMULATION_NAME}_before_parse,
 757   syslib_default,
 758   hll_default,
 759   after_parse_default,
 760   gld_${EMULATION_NAME}_after_open,
 761   after_allocation_default,
 762   set_output_arch_default,
 763   ldemul_default_target,
 764   gld_${EMULATION_NAME}_before_allocation,
 765   gld_${EMULATION_NAME}_get_script,
 766   "${EMULATION_NAME}",
 767   "${OUTPUT_FORMAT}",
 768   finish_default,
 769   NULL, /* create output section statements */
 770   NULL, /* open dynamic archive */
 771   gld${EMULATION_NAME}_place_orphan,
 772   gld_${EMULATION_NAME}_set_symbols,
 773   NULL, /* parse_args */
 774   gld${EMULATION_NAME}_add_options,
 775   gld${EMULATION_NAME}_handle_option,
 776   NULL, /* unrecognized file */
 777   NULL, /* list options */
 778   NULL, /* recognized file */
 779   NULL, /* find_potential_libraries */
 780   NULL, /* new_vers_pattern */
 781   NULL  /* extra_map_file_text */
 782 };
 783 EOF