ld/emultempl/spuelf.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
   3 #
   4 # This file is part of the GNU Binutils.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19 # MA 02110-1301, USA.
  20 #
  21
  22 # This file is sourced from elf32.em, and defines extra spu specific
  23 # features.
  24 #
  25 fragment <<EOF
  26 #include "ldctor.h"
  27 #include "elf32-spu.h"
  28
  29 /* Non-zero if no overlay processing should be done.  */
  30 static int no_overlays = 0;
  31
  32 /* Non-zero if we want stubs on all calls out of overlay regions.  */
  33 static int non_overlay_stubs = 0;
  34
  35 /* Whether to emit symbols for stubs.  */
  36 static int emit_stub_syms = 0;
  37
  38 /* Non-zero to perform stack space analysis.  */
  39 static int stack_analysis = 0;
  40
  41 /* Whether to emit symbols with stack requirements for each function.  */
  42 static int emit_stack_syms = 0;
  43
  44 /* Range of valid addresses for loadable sections.  */
  45 static bfd_vma local_store_lo = 0;
  46 static bfd_vma local_store_hi = 0x3ffff;
  47
  48 /* Control --auto-overlay feature.  */
  49 static int auto_overlay = 0;
  50 static char *auto_overlay_file = 0;
  51 static unsigned int auto_overlay_fixed = 0;
  52 static unsigned int auto_overlay_reserved = 0;
  53 static int extra_stack_space = 2000;
  54 int my_argc;
  55 char **my_argv;
  56
  57 static const char ovl_mgr[] = {
  58 EOF
  59
  60 if ! ../binutils/bin2c < ${srcdir}/emultempl/spu_ovl.o >> e${EMULATION_NAME}.c
  61 then
  62   echo >&2 "Missing ${srcdir}/emultempl/spu_ovl.o"
  63   echo >&2 "You must build gas/as-new with --target=spu to build spu_ovl.o"
  64   exit 1
  65 fi
  66
  67 fragment <<EOF
  68 };
  69
  70 static const struct _ovl_stream ovl_mgr_stream = {
  71   ovl_mgr,
  72   ovl_mgr + sizeof (ovl_mgr)
  73 };
  74
  75
  76 static int
  77 is_spu_target (void)
  78 {
  79   extern const bfd_target bfd_elf32_spu_vec;
  80
  81   return link_info.output_bfd->xvec == &bfd_elf32_spu_vec;
  82 }
  83
  84 /* Create our note section.  */
  85
  86 static void
  87 spu_after_open (void)
  88 {
  89   if (is_spu_target ()
  90       && !link_info.relocatable
  91       && link_info.input_bfds != NULL
  92       && !spu_elf_create_sections (&link_info,
  93                                    stack_analysis, emit_stack_syms))
  94     einfo ("%X%P: can not create note section: %E\n");
  95
  96   gld${EMULATION_NAME}_after_open ();
  97 }
  98
  99 /* If O is NULL, add section S at the end of output section OUTPUT_NAME.
 100    If O is not NULL, add section S at the beginning of output section O.
 101
 102    Really, we should be duplicating ldlang.c map_input_to_output_sections
 103    logic here, ie. using the linker script to find where the section
 104    goes.  That's rather a lot of code, and we don't want to run
 105    map_input_to_output_sections again because most sections are already
 106    mapped.  So cheat, and put the section in a fixed place, ignoring any
 107    attempt via a linker script to put .stub, .ovtab, and built-in
 108    overlay manager code somewhere else.  */
 109
 110 static void
 111 spu_place_special_section (asection *s, asection *o, const char *output_name)
 112 {
 113   lang_output_section_statement_type *os;
 114
 115   os = lang_output_section_find (o != NULL ? o->name : output_name);
 116   if (os == NULL)
 117     {
 118       const char *save = s->name;
 119       s->name = output_name;
 120       gld${EMULATION_NAME}_place_orphan (s);
 121       s->name = save;
 122     }
 123   else if (o != NULL && os->children.head != NULL)
 124     {
 125       lang_statement_list_type add;
 126
 127       lang_list_init (&add);
 128       lang_add_section (&add, s, os);
 129       *add.tail = os->children.head;
 130       os->children.head = add.head;
 131     }
 132   else
 133     lang_add_section (&os->children, s, os);
 134
 135   s->output_section->size += s->size;
 136 }
 137
 138 /* Load built-in overlay manager, and tweak overlay section alignment.  */
 139
 140 static void
 141 spu_elf_load_ovl_mgr (void)
 142 {
 143   lang_output_section_statement_type *os;
 144   struct elf_link_hash_entry *h;
 145
 146   h = elf_link_hash_lookup (elf_hash_table (&link_info),
 147                             "__ovly_load", FALSE, FALSE, FALSE);
 148
 149   if (h != NULL
 150       && (h->root.type == bfd_link_hash_defined
 151           || h->root.type == bfd_link_hash_defweak)
 152       && h->def_regular)
 153     {
 154       /* User supplied __ovly_load.  */
 155     }
 156   else if (ovl_mgr_stream.start == ovl_mgr_stream.end)
 157     einfo ("%F%P: no built-in overlay manager\n");
 158   else
 159     {
 160       lang_input_statement_type *ovl_is;
 161
 162       ovl_is = lang_add_input_file ("builtin ovl_mgr",
 163                                     lang_input_file_is_file_enum,
 164                                     NULL);
 165
 166       if (!spu_elf_open_builtin_lib (&ovl_is->the_bfd, &ovl_mgr_stream))
 167         einfo ("%X%P: can not open built-in overlay manager: %E\n");
 168       else
 169         {
 170           asection *in;
 171
 172           if (!load_symbols (ovl_is, NULL))
 173             einfo ("%X%P: can not load built-in overlay manager: %E\n");
 174
 175           /* Map overlay manager sections to output sections.  */
 176           for (in = ovl_is->the_bfd->sections; in != NULL; in = in->next)
 177             if ((in->flags & (SEC_ALLOC | SEC_LOAD))
 178                 == (SEC_ALLOC | SEC_LOAD))
 179               spu_place_special_section (in, NULL, ".text");
 180         }
 181     }
 182
 183   /* Ensure alignment of overlay sections is sufficient.  */
 184   for (os = &lang_output_section_statement.head->output_section_statement;
 185        os != NULL;
 186        os = os->next)
 187     if (os->bfd_section != NULL
 188         && spu_elf_section_data (os->bfd_section) != NULL
 189         && spu_elf_section_data (os->bfd_section)->u.o.ovl_index != 0)
 190       {
 191         if (os->bfd_section->alignment_power < 4)
 192           os->bfd_section->alignment_power = 4;
 193
 194         /* Also ensure size rounds up.  */
 195         os->block_value = 16;
 196       }
 197 }
 198
 199 /* Go find if we need to do anything special for overlays.  */
 200
 201 static void
 202 spu_before_allocation (void)
 203 {
 204   if (is_spu_target ()
 205       && !link_info.relocatable
 206       && !no_overlays)
 207     {
 208       /* Size the sections.  This is premature, but we need to know the
 209          rough layout so that overlays can be found.  */
 210       expld.phase = lang_mark_phase_enum;
 211       expld.dataseg.phase = exp_dataseg_none;
 212       one_lang_size_sections_pass (NULL, TRUE);
 213
 214       /* Find overlays by inspecting section vmas.  */
 215       if (spu_elf_find_overlays (&link_info))
 216         {
 217           int ret;
 218
 219           if (auto_overlay != 0)
 220             {
 221               einfo ("%P: --auto-overlay ignored with user overlay script\n");
 222               auto_overlay = 0;
 223             }
 224
 225           ret = spu_elf_size_stubs (&link_info,
 226                                     spu_place_special_section,
 227                                     non_overlay_stubs);
 228           if (ret == 0)
 229             einfo ("%X%P: can not size overlay stubs: %E\n");
 230           else if (ret == 2)
 231             spu_elf_load_ovl_mgr ();
 232         }
 233
 234       /* We must not cache anything from the preliminary sizing.  */
 235       lang_reset_memory_regions ();
 236     }
 237
 238   gld${EMULATION_NAME}_before_allocation ();
 239 }
 240
 241 struct tflist {
 242   struct tflist *next;
 243   char name[9];
 244 };
 245
 246 static struct tflist *tmp_file_list;
 247
 248 static void clean_tmp (void)
 249 {
 250   for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
 251     unlink (tmp_file_list->name);
 252 }
 253
 254 static int
 255 new_tmp_file (char **fname)
 256 {
 257   struct tflist *tf;
 258   int fd;
 259
 260   if (tmp_file_list == NULL)
 261     atexit (clean_tmp);
 262   tf = xmalloc (sizeof (*tf));
 263   tf->next = tmp_file_list;
 264   tmp_file_list = tf;
 265   memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
 266   *fname = tf->name;
 267 #ifdef HAVE_MKSTEMP
 268   fd = mkstemp (*fname);
 269 #else
 270   *fname = mktemp (*fname);
 271   if (*fname == NULL)
 272     return -1;
 273   fd = open (fname, O_RDWR | O_CREAT | O_EXCL, 0600);
 274 #endif
 275   return fd;
 276 }
 277
 278 static FILE *
 279 spu_elf_open_overlay_script (void)
 280 {
 281   FILE *script = NULL;
 282
 283   if (auto_overlay_file == NULL)
 284     {
 285       int fd = new_tmp_file (&auto_overlay_file);
 286       if (fd == -1)
 287         goto file_err;
 288       script = fdopen (fd, "w");
 289     }
 290   else
 291     script = fopen (auto_overlay_file, "w");
 292
 293   if (script == NULL)
 294     {
 295     file_err:
 296       einfo ("%F%P: can not open script: %E\n");
 297     }
 298   return script;
 299 }
 300
 301 static void
 302 spu_elf_relink (void)
 303 {
 304   char **argv = xmalloc ((my_argc + 4) * sizeof (*argv));
 305
 306   memcpy (argv, my_argv, my_argc * sizeof (*argv));
 307   argv[my_argc++] = "--no-auto-overlay";
 308   if (tmp_file_list->name == auto_overlay_file)
 309     argv[my_argc - 1] = concat (argv[my_argc - 1], "=",
 310                                 auto_overlay_file, (const char *) NULL);
 311   argv[my_argc++] = "-T";
 312   argv[my_argc++] = auto_overlay_file;
 313   argv[my_argc] = 0;
 314   execvp (argv[0], (char *const *) argv);
 315   perror (argv[0]);
 316   _exit (127);
 317 }
 318
 319 /* Final emulation specific call.  */
 320
 321 static void
 322 gld${EMULATION_NAME}_finish (void)
 323 {
 324   int need_laying_out;
 325
 326   need_laying_out = bfd_elf_discard_info (link_info.output_bfd, &link_info);
 327
 328   gld${EMULATION_NAME}_map_segments (need_laying_out);
 329
 330   if (is_spu_target ())
 331     {
 332       if (local_store_lo < local_store_hi)
 333         {
 334           asection *s;
 335
 336           s = spu_elf_check_vma (&link_info, auto_overlay,
 337                                  local_store_lo, local_store_hi,
 338                                  auto_overlay_fixed, auto_overlay_reserved,
 339                                  extra_stack_space,
 340                                  spu_elf_load_ovl_mgr,
 341                                  spu_elf_open_overlay_script,
 342                                  spu_elf_relink);
 343           if (s != NULL && !auto_overlay)
 344             einfo ("%X%P: %A exceeds local store range\n", s);
 345         }
 346       else if (auto_overlay)
 347         einfo ("%P: --auto-overlay ignored with zero local store range\n");
 348
 349       if (!spu_elf_build_stubs (&link_info,
 350                                 emit_stub_syms || link_info.emitrelocations))
 351         einfo ("%F%P: can not build overlay stubs: %E\n");
 352     }
 353
 354   finish_default ();
 355 }
 356
 357 static char *
 358 gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
 359 {
 360   my_argc = argc;
 361   my_argv = argv;
 362   return ldemul_default_target (argc, argv);
 363 }
 364
 365 EOF
 366
 367 if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
 368   fragment <<EOF
 369 #include "filenames.h"
 370 #include <fcntl.h>
 371 #include <sys/wait.h>
 372
 373 static const char *
 374 base_name (const char *path)
 375 {
 376   const char *file = strrchr (path, '/');
 377 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 378   {
 379     char *bslash = strrchr (path, '\\\\');
 380
 381     if (file == NULL || (bslash != NULL && bslash > file))
 382       file = bslash;
 383     if (file == NULL
 384         && path[0] != '\0'
 385         && path[1] == ':')
 386       file = path + 1;
 387   }
 388 #endif
 389   if (file == NULL)
 390     file = path;
 391   else
 392     ++file;
 393   return file;
 394 }
 395
 396 /* This function is called when building a ppc32 or ppc64 executable
 397    to handle embedded spu images.  */
 398 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 399
 400 bfd_boolean
 401 embedded_spu_file (lang_input_statement_type *entry, const char *flags)
 402 {
 403   const char *cmd[6];
 404   const char *sym;
 405   char *handle, *p;
 406   char *oname;
 407   int fd;
 408   pid_t pid;
 409   int status;
 410   union lang_statement_union **old_stat_tail;
 411   union lang_statement_union **old_file_tail;
 412   union lang_statement_union *new_ent;
 413   lang_input_statement_type *search;
 414
 415   if (entry->the_bfd->format != bfd_object
 416       || strcmp (entry->the_bfd->xvec->name, "elf32-spu") != 0
 417       || (entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_EXEC
 418           && entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_DYN))
 419     return FALSE;
 420
 421   /* Use the filename as the symbol marking the program handle struct.  */
 422   sym = base_name (entry->the_bfd->filename);
 423
 424   handle = xstrdup (sym);
 425   for (p = handle; *p; ++p)
 426     if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
 427       *p = '_';
 428
 429   fd = new_tmp_file (&oname);
 430   if (fd == -1)
 431     return FALSE;
 432   close (fd);
 433
 434   for (search = (lang_input_statement_type *) input_file_chain.head;
 435        search != NULL;
 436        search = (lang_input_statement_type *) search->next_real_file)
 437     if (search->filename != NULL)
 438       {
 439         const char *infile = base_name (search->filename);
 440
 441         if (strncmp (infile, "crtbegin", 8) == 0)
 442           {
 443             if (infile[8] == 'S')
 444               flags = concat (flags, " -fPIC", (const char *) NULL);
 445             else if (infile[8] == 'T')
 446               flags = concat (flags, " -fpie", (const char *) NULL);
 447             break;
 448           }
 449       }
 450
 451   /* Use fork() and exec() rather than system() so that we don't
 452      need to worry about quoting args.  */
 453   cmd[0] = EMBEDSPU;
 454   cmd[1] = flags;
 455   cmd[2] = handle;
 456   cmd[3] = entry->the_bfd->filename;
 457   cmd[4] = oname;
 458   cmd[5] = NULL;
 459   if (trace_file_tries)
 460     {
 461       info_msg (_("running: %s \"%s\" \"%s\" \"%s\" \"%s\"\n"),
 462                 cmd[0], cmd[1], cmd[2], cmd[3], cmd[4]);
 463       fflush (stdout);
 464     }
 465
 466   pid = fork ();
 467   if (pid == -1)
 468     return FALSE;
 469   if (pid == 0)
 470     {
 471       execvp (cmd[0], (char *const *) cmd);
 472       if (strcmp ("embedspu", EMBEDSPU) != 0)
 473         {
 474           cmd[0] = "embedspu";
 475           execvp (cmd[0], (char *const *) cmd);
 476         }
 477       perror (cmd[0]);
 478       _exit (127);
 479     }
 480 #ifdef HAVE_WAITPID
 481 #define WAITFOR(PID, STAT) waitpid (PID, STAT, 0)
 482 #else
 483 #define WAITFOR(PID, STAT) wait (STAT)
 484 #endif
 485   if (WAITFOR (pid, &status) != pid
 486       || !WIFEXITED (status)
 487       || WEXITSTATUS (status) != 0)
 488     return FALSE;
 489 #undef WAITFOR
 490
 491   old_stat_tail = stat_ptr->tail;
 492   old_file_tail = input_file_chain.tail;
 493   if (lang_add_input_file (oname, lang_input_file_is_file_enum, NULL) == NULL)
 494     return FALSE;
 495
 496   /* lang_add_input_file put the new list entry at the end of the statement
 497      and input file lists.  Move it to just after the current entry.  */
 498   new_ent = *old_stat_tail;
 499   *old_stat_tail = NULL;
 500   stat_ptr->tail = old_stat_tail;
 501   *old_file_tail = NULL;
 502   input_file_chain.tail = old_file_tail;
 503   new_ent->header.next = entry->header.next;
 504   entry->header.next = new_ent;
 505   new_ent->input_statement.next_real_file = entry->next_real_file;
 506   entry->next_real_file = new_ent;
 507
 508   /* Ensure bfd sections are excluded from the output.  */
 509   bfd_section_list_clear (entry->the_bfd);
 510   entry->loaded = TRUE;
 511   return TRUE;
 512 }
 513
 514 EOF
 515 fi
 516
 517 # Define some shell vars to insert bits of code into the standard elf
 518 # parse_args and list_options functions.
 519 #
 520 PARSE_AND_LIST_PROLOGUE='
 521 #define OPTION_SPU_PLUGIN               301
 522 #define OPTION_SPU_NO_OVERLAYS          (OPTION_SPU_PLUGIN + 1)
 523 #define OPTION_SPU_STUB_SYMS            (OPTION_SPU_NO_OVERLAYS + 1)
 524 #define OPTION_SPU_NON_OVERLAY_STUBS    (OPTION_SPU_STUB_SYMS + 1)
 525 #define OPTION_SPU_LOCAL_STORE          (OPTION_SPU_NON_OVERLAY_STUBS + 1)
 526 #define OPTION_SPU_STACK_ANALYSIS       (OPTION_SPU_LOCAL_STORE + 1)
 527 #define OPTION_SPU_STACK_SYMS           (OPTION_SPU_STACK_ANALYSIS + 1)
 528 #define OPTION_SPU_AUTO_OVERLAY         (OPTION_SPU_STACK_SYMS + 1)
 529 #define OPTION_SPU_AUTO_RELINK          (OPTION_SPU_AUTO_OVERLAY + 1)
 530 #define OPTION_SPU_OVERLAY_RODATA       (OPTION_SPU_AUTO_RELINK + 1)
 531 #define OPTION_SPU_FIXED_SPACE          (OPTION_SPU_OVERLAY_RODATA + 1)
 532 #define OPTION_SPU_RESERVED_SPACE       (OPTION_SPU_FIXED_SPACE + 1)
 533 #define OPTION_SPU_EXTRA_STACK          (OPTION_SPU_RESERVED_SPACE + 1)
 534 #define OPTION_SPU_NO_AUTO_OVERLAY      (OPTION_SPU_EXTRA_STACK + 1)
 535 '
 536
 537 PARSE_AND_LIST_LONGOPTS='
 538   { "plugin", no_argument, NULL, OPTION_SPU_PLUGIN },
 539   { "no-overlays", no_argument, NULL, OPTION_SPU_NO_OVERLAYS },
 540   { "emit-stub-syms", no_argument, NULL, OPTION_SPU_STUB_SYMS },
 541   { "extra-overlay-stubs", no_argument, NULL, OPTION_SPU_NON_OVERLAY_STUBS },
 542   { "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
 543   { "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
 544   { "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
 545   { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
 546   { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
 547   { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
 548   { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
 549   { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
 550   { "extra-stack-space", required_argument, NULL, OPTION_SPU_EXTRA_STACK },
 551   { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
 552 '
 553
 554 PARSE_AND_LIST_OPTIONS='
 555   fprintf (file, _("\
 556   --plugin                    Make SPU plugin.\n\
 557   --no-overlays               No overlay handling.\n\
 558   --emit-stub-syms            Add symbols on overlay call stubs.\n\
 559   --extra-overlay-stubs       Add stubs on all calls out of overlay regions.\n\
 560   --local-store=lo:hi         Valid address range.\n\
 561   --stack-analysis            Estimate maximum stack requirement.\n\
 562   --emit-stack-syms           Add sym giving stack needed for each func.\n\
 563   --auto-overlay [=filename]  Create an overlay script in filename if\n\
 564                               executable does not fit in local store.\n\
 565   --auto-relink               Rerun linker using auto-overlay script.\n\
 566   --overlay-rodata            Place read-only data with associated function\n\
 567                               code in overlays.\n\
 568   --fixed-space=bytes         Local store for non-overlay code and data.\n\
 569   --reserved-space=bytes      Local store for stack and heap.  If not specified\n\
 570                               ld will estimate stack size and assume no heap.\n\
 571   --extra-stack-space=bytes   Space for negative sp access (default 2000) if\n\
 572                               --reserved-space not given.\n"
 573                    ));
 574 '
 575
 576 PARSE_AND_LIST_ARGS_CASES='
 577     case OPTION_SPU_PLUGIN:
 578       spu_elf_plugin (1);
 579       break;
 580
 581     case OPTION_SPU_NO_OVERLAYS:
 582       no_overlays = 1;
 583       break;
 584
 585     case OPTION_SPU_STUB_SYMS:
 586       emit_stub_syms = 1;
 587       break;
 588
 589     case OPTION_SPU_NON_OVERLAY_STUBS:
 590       non_overlay_stubs = 1;
 591       break;
 592
 593     case OPTION_SPU_LOCAL_STORE:
 594       {
 595         char *end;
 596         local_store_lo = strtoul (optarg, &end, 0);
 597         if (*end == '\'':'\'')
 598           {
 599             local_store_hi = strtoul (end + 1, &end, 0);
 600             if (*end == 0)
 601               break;
 602           }
 603         einfo (_("%P%F: invalid --local-store address range `%s'\''\n"), optarg);
 604       }
 605       break;
 606
 607     case OPTION_SPU_STACK_ANALYSIS:
 608       stack_analysis = 1;
 609       break;
 610
 611     case OPTION_SPU_STACK_SYMS:
 612       emit_stack_syms = 1;
 613       break;
 614
 615     case OPTION_SPU_AUTO_OVERLAY:
 616       auto_overlay |= 1;
 617       if (optarg != NULL)
 618         {
 619           auto_overlay_file = optarg;
 620           break;
 621         }
 622       /* Fall thru */
 623
 624     case OPTION_SPU_AUTO_RELINK:
 625       auto_overlay |= 2;
 626       break;
 627
 628     case OPTION_SPU_OVERLAY_RODATA:
 629       auto_overlay |= 4;
 630       break;
 631
 632     case OPTION_SPU_FIXED_SPACE:
 633       {
 634         char *end;
 635         auto_overlay_fixed = strtoul (optarg, &end, 0);
 636         if (*end != 0)
 637           einfo (_("%P%F: invalid --fixed-space value `%s'\''\n"), optarg);
 638       }
 639       break;
 640
 641     case OPTION_SPU_RESERVED_SPACE:
 642       {
 643         char *end;
 644         auto_overlay_reserved = strtoul (optarg, &end, 0);
 645         if (*end != 0)
 646           einfo (_("%P%F: invalid --reserved-space value `%s'\''\n"), optarg);
 647       }
 648       break;
 649
 650     case OPTION_SPU_EXTRA_STACK:
 651       {
 652         char *end;
 653         extra_stack_space = strtol (optarg, &end, 0);
 654         if (*end != 0)
 655           einfo (_("%P%F: invalid --extra-stack-space value `%s'\''\n"), optarg);
 656       }
 657       break;
 658
 659     case OPTION_SPU_NO_AUTO_OVERLAY:
 660       auto_overlay = 0;
 661       if (optarg != NULL)
 662         {
 663           struct tflist *tf;
 664           size_t len;
 665
 666           if (tmp_file_list == NULL)
 667             atexit (clean_tmp);
 668
 669           len = strlen (optarg) + 1;
 670           tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
 671           memcpy (tf->name, optarg, len);
 672           tf->next = tmp_file_list;
 673           tmp_file_list = tf;
 674           break;
 675         }
 676       break;
 677 '
 678
 679 LDEMUL_AFTER_OPEN=spu_after_open
 680 LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
 681 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
 682 LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target