ld/emultempl/spuelf.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright 2006, 2007, 2008, 2009 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 static void spu_place_special_section (asection *, asection *, const char *);
  30 static bfd_size_type spu_elf_load_ovl_mgr (void);
  31 static FILE *spu_elf_open_overlay_script (void);
  32 static void spu_elf_relink (void);
  33
  34 static struct spu_elf_params params =
  35 {
  36   &spu_place_special_section,
  37   &spu_elf_load_ovl_mgr,
  38   &spu_elf_open_overlay_script,
  39   &spu_elf_relink,
  40   0, ovly_normal, 0, 0, 0, 0, 0, 0,
  41   0, 0x3ffff,
  42   1, 0, 16, 0, 0, 2000
  43 };
  44
  45 static unsigned int num_lines_set = 0;
  46 static unsigned int line_size_set = 0;
  47 static char *auto_overlay_file = 0;
  48 int my_argc;
  49 char **my_argv;
  50
  51 static const char ovl_mgr[] = {
  52 EOF
  53
  54 if ! cat ${srcdir}/emultempl/spu_ovl.o_c >> e${EMULATION_NAME}.c
  55 then
  56   echo >&2 "Missing ${srcdir}/emultempl/spu_ovl.o_c"
  57   echo >&2 "You must build gas/as-new with --target=spu"
  58   exit 1
  59 fi
  60
  61 fragment <<EOF
  62 };
  63
  64 static const char icache_mgr[] = {
  65 EOF
  66
  67 if ! cat ${srcdir}/emultempl/spu_icache.o_c >> e${EMULATION_NAME}.c
  68 then
  69   echo >&2 "Missing ${srcdir}/emultempl/spu_icache.o_c"
  70   echo >&2 "You must build gas/as-new with --target=spu"
  71   exit 1
  72 fi
  73
  74 fragment <<EOF
  75 };
  76
  77 static const struct _ovl_stream ovl_mgr_stream = {
  78   ovl_mgr,
  79   ovl_mgr + sizeof (ovl_mgr)
  80 };
  81
  82 static const struct _ovl_stream icache_mgr_stream = {
  83   icache_mgr,
  84   icache_mgr + sizeof (icache_mgr)
  85 };
  86
  87
  88 static int
  89 is_spu_target (void)
  90 {
  91   extern const bfd_target bfd_elf32_spu_vec;
  92
  93   return link_info.output_bfd->xvec == &bfd_elf32_spu_vec;
  94 }
  95
  96 /* Create our note section.  */
  97
  98 static void
  99 spu_after_open (void)
 100 {
 101   if (is_spu_target ())
 102     {
 103       /* Pass params to backend.  */
 104       if ((params.auto_overlay & AUTO_OVERLAY) == 0)
 105         params.auto_overlay = 0;
 106       params.emit_stub_syms |= link_info.emitrelocations;
 107       spu_elf_setup (&link_info, &params);
 108
 109       if (link_info.relocatable)
 110         lang_add_unique (".text.ia.*");
 111
 112       if (!link_info.relocatable
 113           && link_info.input_bfds != NULL
 114           && !spu_elf_create_sections (&link_info))
 115         einfo ("%X%P: can not create note section: %E\n");
 116     }
 117
 118   gld${EMULATION_NAME}_after_open ();
 119 }
 120
 121 /* If O is NULL, add section S at the end of output section OUTPUT_NAME.
 122    If O is not NULL, add section S at the beginning of output section O,
 123    except for soft-icache which adds to the end.
 124
 125    Really, we should be duplicating ldlang.c map_input_to_output_sections
 126    logic here, ie. using the linker script to find where the section
 127    goes.  That's rather a lot of code, and we don't want to run
 128    map_input_to_output_sections again because most sections are already
 129    mapped.  So cheat, and put the section in a fixed place, ignoring any
 130    attempt via a linker script to put .stub, .ovtab, and built-in
 131    overlay manager code somewhere else.  */
 132
 133 static void
 134 spu_place_special_section (asection *s, asection *o, const char *output_name)
 135 {
 136   lang_output_section_statement_type *os;
 137
 138   if (o != NULL)
 139     output_name = o->name;
 140   os = lang_output_section_find (output_name);
 141   if (os == NULL)
 142     {
 143       os = gld${EMULATION_NAME}_place_orphan (s, output_name, 0);
 144       os->addr_tree = NULL;
 145     }
 146   else if (params.ovly_flavour != ovly_soft_icache
 147            && o != NULL && os->children.head != NULL)
 148     {
 149       lang_statement_list_type add;
 150
 151       lang_list_init (&add);
 152       lang_add_section (&add, s, os);
 153       *add.tail = os->children.head;
 154       os->children.head = add.head;
 155     }
 156   else
 157     {
 158       if (params.ovly_flavour == ovly_soft_icache && o != NULL)
 159         {
 160           /* Pad this stub section so that it finishes at the
 161              end of the icache line.  */
 162           etree_type *e_size;
 163
 164           push_stat_ptr (&os->children);
 165           e_size = exp_intop (params.line_size - s->size);
 166           lang_add_assignment (exp_assop ('=', ".", e_size));
 167           pop_stat_ptr ();
 168         }
 169       lang_add_section (&os->children, s, os);
 170     }
 171
 172   s->output_section->size += s->size;
 173 }
 174
 175 /* Load built-in overlay manager.  */
 176
 177 static bfd_size_type
 178 spu_elf_load_ovl_mgr (void)
 179 {
 180   struct elf_link_hash_entry *h;
 181   const char *ovly_mgr_entry;
 182   const struct _ovl_stream *mgr_stream;
 183   bfd_size_type total = 0;
 184
 185   ovly_mgr_entry = "__ovly_load";
 186   mgr_stream = &ovl_mgr_stream;
 187   if (params.ovly_flavour == ovly_soft_icache)
 188     {
 189       ovly_mgr_entry = "__icache_br_handler";
 190       mgr_stream = &icache_mgr_stream;
 191     }
 192   h = elf_link_hash_lookup (elf_hash_table (&link_info),
 193                             ovly_mgr_entry, FALSE, FALSE, FALSE);
 194
 195   if (h != NULL
 196       && (h->root.type == bfd_link_hash_defined
 197           || h->root.type == bfd_link_hash_defweak)
 198       && h->def_regular)
 199     {
 200       /* User supplied __ovly_load.  */
 201     }
 202   else if (mgr_stream->start == mgr_stream->end)
 203     einfo ("%F%P: no built-in overlay manager\n");
 204   else
 205     {
 206       lang_input_statement_type *ovl_is;
 207
 208       ovl_is = lang_add_input_file ("builtin ovl_mgr",
 209                                     lang_input_file_is_file_enum,
 210                                     NULL);
 211
 212       if (!spu_elf_open_builtin_lib (&ovl_is->the_bfd, mgr_stream))
 213         einfo ("%X%P: can not open built-in overlay manager: %E\n");
 214       else
 215         {
 216           asection *in;
 217
 218           if (!load_symbols (ovl_is, NULL))
 219             einfo ("%X%P: can not load built-in overlay manager: %E\n");
 220
 221           /* Map overlay manager sections to output sections.
 222              First try for a matching output section name, if that
 223              fails then try mapping .abc.xyz to .abc, otherwise map
 224              to .text.  */
 225           for (in = ovl_is->the_bfd->sections; in != NULL; in = in->next)
 226             if ((in->flags & (SEC_ALLOC | SEC_LOAD))
 227                 == (SEC_ALLOC | SEC_LOAD))
 228               {
 229                 const char *oname = in->name;
 230                 if (strncmp (in->name, ".ovl.init", 9) != 0)
 231                   {
 232                     total += in->size;
 233                     if (!lang_output_section_find (oname))
 234                       {
 235                         lang_output_section_statement_type *os = NULL;
 236                         char *p = strchr (oname + 1, '.');
 237                         if (p != NULL)
 238                           {
 239                             size_t len = p - oname;
 240                             p = memcpy (xmalloc (len + 1), oname, len);
 241                             p[len] = '\0';
 242                             os = lang_output_section_find (p);
 243                             free (p);
 244                           }
 245                         if (os != NULL)
 246                           oname = os->name;
 247                         else
 248                           oname = ".text";
 249                       }
 250                   }
 251
 252                 spu_place_special_section (in, NULL, oname);
 253               }
 254         }
 255     }
 256   return total;
 257 }
 258
 259 /* Go find if we need to do anything special for overlays.  */
 260
 261 static void
 262 spu_before_allocation (void)
 263 {
 264   if (is_spu_target ()
 265       && !link_info.relocatable
 266       && params.ovly_flavour != ovly_none)
 267     {
 268       /* Size the sections.  This is premature, but we need to know the
 269          rough layout so that overlays can be found.  */
 270       expld.phase = lang_mark_phase_enum;
 271       expld.dataseg.phase = exp_dataseg_none;
 272       one_lang_size_sections_pass (NULL, TRUE);
 273
 274       /* Find overlays by inspecting section vmas.  */
 275       if (spu_elf_find_overlays (&link_info))
 276         {
 277           int ret;
 278           lang_output_section_statement_type *os;
 279
 280           if (params.auto_overlay != 0)
 281             {
 282               einfo ("%P: --auto-overlay ignored with user overlay script\n");
 283               params.auto_overlay = 0;
 284             }
 285
 286           /* Ensure alignment of overlay sections is sufficient.  */
 287           for (os = &lang_output_section_statement.head->output_section_statement;
 288                os != NULL;
 289                os = os->next)
 290             if (os->bfd_section != NULL
 291                 && spu_elf_section_data (os->bfd_section) != NULL
 292                 && spu_elf_section_data (os->bfd_section)->u.o.ovl_index != 0)
 293               {
 294                 if (os->bfd_section->alignment_power < 4)
 295                   os->bfd_section->alignment_power = 4;
 296
 297                 /* Also ensure size rounds up.  */
 298                 os->block_value = 16;
 299               }
 300
 301           ret = spu_elf_size_stubs (&link_info);
 302           if (ret == 0)
 303             einfo ("%X%P: can not size overlay stubs: %E\n");
 304           else if (ret == 2)
 305             spu_elf_load_ovl_mgr ();
 306         }
 307
 308       /* We must not cache anything from the preliminary sizing.  */
 309       lang_reset_memory_regions ();
 310     }
 311
 312   gld${EMULATION_NAME}_before_allocation ();
 313 }
 314
 315 struct tflist {
 316   struct tflist *next;
 317   char name[9];
 318 };
 319
 320 static struct tflist *tmp_file_list;
 321
 322 static void clean_tmp (void)
 323 {
 324   for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
 325     unlink (tmp_file_list->name);
 326 }
 327
 328 static int
 329 new_tmp_file (char **fname)
 330 {
 331   struct tflist *tf;
 332   int fd;
 333
 334   if (tmp_file_list == NULL)
 335     atexit (clean_tmp);
 336   tf = xmalloc (sizeof (*tf));
 337   tf->next = tmp_file_list;
 338   tmp_file_list = tf;
 339   memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
 340   *fname = tf->name;
 341 #ifdef HAVE_MKSTEMP
 342   fd = mkstemp (*fname);
 343 #else
 344   *fname = mktemp (*fname);
 345   if (*fname == NULL)
 346     return -1;
 347   fd = open (fname, O_RDWR | O_CREAT | O_EXCL, 0600);
 348 #endif
 349   return fd;
 350 }
 351
 352 static FILE *
 353 spu_elf_open_overlay_script (void)
 354 {
 355   FILE *script = NULL;
 356
 357   if (auto_overlay_file == NULL)
 358     {
 359       int fd = new_tmp_file (&auto_overlay_file);
 360       if (fd == -1)
 361         goto file_err;
 362       script = fdopen (fd, "w");
 363     }
 364   else
 365     script = fopen (auto_overlay_file, "w");
 366
 367   if (script == NULL)
 368     {
 369     file_err:
 370       einfo ("%F%P: can not open script: %E\n");
 371     }
 372   return script;
 373 }
 374
 375 static void
 376 spu_elf_relink (void)
 377 {
 378   char **argv = xmalloc ((my_argc + 4) * sizeof (*argv));
 379
 380   memcpy (argv, my_argv, my_argc * sizeof (*argv));
 381   argv[my_argc++] = "--no-auto-overlay";
 382   if (tmp_file_list->name == auto_overlay_file)
 383     argv[my_argc - 1] = concat (argv[my_argc - 1], "=",
 384                                 auto_overlay_file, (const char *) NULL);
 385   argv[my_argc++] = "-T";
 386   argv[my_argc++] = auto_overlay_file;
 387   argv[my_argc] = 0;
 388   execvp (argv[0], (char *const *) argv);
 389   perror (argv[0]);
 390   _exit (127);
 391 }
 392
 393 /* Final emulation specific call.  */
 394
 395 static void
 396 gld${EMULATION_NAME}_finish (void)
 397 {
 398   int need_laying_out;
 399
 400   need_laying_out = bfd_elf_discard_info (link_info.output_bfd, &link_info);
 401
 402   gld${EMULATION_NAME}_map_segments (need_laying_out);
 403
 404   if (is_spu_target ())
 405     {
 406       if (params.local_store_lo < params.local_store_hi)
 407         {
 408           asection *s;
 409
 410           s = spu_elf_check_vma (&link_info);
 411           if (s != NULL && !params.auto_overlay)
 412             einfo ("%X%P: %A exceeds local store range\n", s);
 413         }
 414       else if (params.auto_overlay)
 415         einfo ("%P: --auto-overlay ignored with zero local store range\n");
 416     }
 417
 418   finish_default ();
 419 }
 420
 421 static char *
 422 gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
 423 {
 424   my_argc = argc;
 425   my_argv = argv;
 426   return ldemul_default_target (argc, argv);
 427 }
 428
 429 EOF
 430
 431 if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
 432   fragment <<EOF
 433 #include "filenames.h"
 434 #include <fcntl.h>
 435 #include <sys/wait.h>
 436
 437 static const char *
 438 base_name (const char *path)
 439 {
 440   const char *file = strrchr (path, '/');
 441 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 442   {
 443     char *bslash = strrchr (path, '\\\\');
 444
 445     if (file == NULL || (bslash != NULL && bslash > file))
 446       file = bslash;
 447     if (file == NULL
 448         && path[0] != '\0'
 449         && path[1] == ':')
 450       file = path + 1;
 451   }
 452 #endif
 453   if (file == NULL)
 454     file = path;
 455   else
 456     ++file;
 457   return file;
 458 }
 459
 460 /* This function is called when building a ppc32 or ppc64 executable
 461    to handle embedded spu images.  */
 462 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 463
 464 bfd_boolean
 465 embedded_spu_file (lang_input_statement_type *entry, const char *flags)
 466 {
 467   const char *cmd[6];
 468   const char *sym;
 469   char *handle, *p;
 470   char *oname;
 471   int fd;
 472   pid_t pid;
 473   int status;
 474   union lang_statement_union **old_stat_tail;
 475   union lang_statement_union **old_file_tail;
 476   union lang_statement_union *new_ent;
 477   lang_input_statement_type *search;
 478
 479   if (entry->the_bfd->format != bfd_object
 480       || strcmp (entry->the_bfd->xvec->name, "elf32-spu") != 0
 481       || (entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_EXEC
 482           && entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_DYN))
 483     return FALSE;
 484
 485   /* Use the filename as the symbol marking the program handle struct.  */
 486   sym = base_name (entry->the_bfd->filename);
 487
 488   handle = xstrdup (sym);
 489   for (p = handle; *p; ++p)
 490     if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
 491       *p = '_';
 492
 493   fd = new_tmp_file (&oname);
 494   if (fd == -1)
 495     return FALSE;
 496   close (fd);
 497
 498   for (search = (lang_input_statement_type *) input_file_chain.head;
 499        search != NULL;
 500        search = (lang_input_statement_type *) search->next_real_file)
 501     if (search->filename != NULL)
 502       {
 503         const char *infile = base_name (search->filename);
 504
 505         if (strncmp (infile, "crtbegin", 8) == 0)
 506           {
 507             if (infile[8] == 'S')
 508               flags = concat (flags, " -fPIC", (const char *) NULL);
 509             else if (infile[8] == 'T')
 510               flags = concat (flags, " -fpie", (const char *) NULL);
 511             break;
 512           }
 513       }
 514
 515   /* Use fork() and exec() rather than system() so that we don't
 516      need to worry about quoting args.  */
 517   cmd[0] = EMBEDSPU;
 518   cmd[1] = flags;
 519   cmd[2] = handle;
 520   cmd[3] = entry->the_bfd->filename;
 521   cmd[4] = oname;
 522   cmd[5] = NULL;
 523   if (trace_file_tries)
 524     {
 525       info_msg (_("running: %s \"%s\" \"%s\" \"%s\" \"%s\"\n"),
 526                 cmd[0], cmd[1], cmd[2], cmd[3], cmd[4]);
 527       fflush (stdout);
 528     }
 529
 530   pid = fork ();
 531   if (pid == -1)
 532     return FALSE;
 533   if (pid == 0)
 534     {
 535       execvp (cmd[0], (char *const *) cmd);
 536       if (strcmp ("embedspu", EMBEDSPU) != 0)
 537         {
 538           cmd[0] = "embedspu";
 539           execvp (cmd[0], (char *const *) cmd);
 540         }
 541       perror (cmd[0]);
 542       _exit (127);
 543     }
 544 #ifdef HAVE_WAITPID
 545 #define WAITFOR(PID, STAT) waitpid (PID, STAT, 0)
 546 #else
 547 #define WAITFOR(PID, STAT) wait (STAT)
 548 #endif
 549   if (WAITFOR (pid, &status) != pid
 550       || !WIFEXITED (status)
 551       || WEXITSTATUS (status) != 0)
 552     return FALSE;
 553 #undef WAITFOR
 554
 555   old_stat_tail = stat_ptr->tail;
 556   old_file_tail = input_file_chain.tail;
 557   if (lang_add_input_file (oname, lang_input_file_is_file_enum, NULL) == NULL)
 558     return FALSE;
 559
 560   /* lang_add_input_file puts the new list entry at the end of the statement
 561      and input file lists.  Move it to just after the current entry.  */
 562   new_ent = *old_stat_tail;
 563   *old_stat_tail = NULL;
 564   stat_ptr->tail = old_stat_tail;
 565   *old_file_tail = NULL;
 566   input_file_chain.tail = old_file_tail;
 567   new_ent->header.next = entry->header.next;
 568   entry->header.next = new_ent;
 569   new_ent->input_statement.next_real_file = entry->next_real_file;
 570   entry->next_real_file = new_ent;
 571
 572   /* Ensure bfd sections are excluded from the output.  */
 573   bfd_section_list_clear (entry->the_bfd);
 574   entry->loaded = TRUE;
 575   return TRUE;
 576 }
 577
 578 EOF
 579 fi
 580
 581 # Define some shell vars to insert bits of code into the standard elf
 582 # parse_args and list_options functions.
 583 #
 584 PARSE_AND_LIST_PROLOGUE='
 585 #define OPTION_SPU_PLUGIN               301
 586 #define OPTION_SPU_NO_OVERLAYS          (OPTION_SPU_PLUGIN + 1)
 587 #define OPTION_SPU_STUB_SYMS            (OPTION_SPU_NO_OVERLAYS + 1)
 588 #define OPTION_SPU_NON_OVERLAY_STUBS    (OPTION_SPU_STUB_SYMS + 1)
 589 #define OPTION_SPU_LOCAL_STORE          (OPTION_SPU_NON_OVERLAY_STUBS + 1)
 590 #define OPTION_SPU_STACK_ANALYSIS       (OPTION_SPU_LOCAL_STORE + 1)
 591 #define OPTION_SPU_STACK_SYMS           (OPTION_SPU_STACK_ANALYSIS + 1)
 592 #define OPTION_SPU_AUTO_OVERLAY         (OPTION_SPU_STACK_SYMS + 1)
 593 #define OPTION_SPU_AUTO_RELINK          (OPTION_SPU_AUTO_OVERLAY + 1)
 594 #define OPTION_SPU_OVERLAY_RODATA       (OPTION_SPU_AUTO_RELINK + 1)
 595 #define OPTION_SPU_SOFT_ICACHE          (OPTION_SPU_OVERLAY_RODATA + 1)
 596 #define OPTION_SPU_LINE_SIZE            (OPTION_SPU_SOFT_ICACHE + 1)
 597 #define OPTION_SPU_NUM_LINES            (OPTION_SPU_LINE_SIZE + 1)
 598 #define OPTION_SPU_LRLIVE               (OPTION_SPU_NUM_LINES + 1)
 599 #define OPTION_SPU_NON_IA_TEXT          (OPTION_SPU_LRLIVE + 1)
 600 #define OPTION_SPU_FIXED_SPACE          (OPTION_SPU_NON_IA_TEXT + 1)
 601 #define OPTION_SPU_RESERVED_SPACE       (OPTION_SPU_FIXED_SPACE + 1)
 602 #define OPTION_SPU_EXTRA_STACK          (OPTION_SPU_RESERVED_SPACE + 1)
 603 #define OPTION_SPU_NO_AUTO_OVERLAY      (OPTION_SPU_EXTRA_STACK + 1)
 604 '
 605
 606 PARSE_AND_LIST_LONGOPTS='
 607   { "plugin", no_argument, NULL, OPTION_SPU_PLUGIN },
 608   { "soft-icache", no_argument, NULL, OPTION_SPU_SOFT_ICACHE },
 609   { "lrlive-analysis", no_argument, NULL, OPTION_SPU_LRLIVE },
 610   { "num-lines", required_argument, NULL, OPTION_SPU_NUM_LINES },
 611   { "line-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 612   { "non-ia-text", no_argument, NULL, OPTION_SPU_NON_IA_TEXT },
 613   { "no-overlays", no_argument, NULL, OPTION_SPU_NO_OVERLAYS },
 614   { "emit-stub-syms", no_argument, NULL, OPTION_SPU_STUB_SYMS },
 615   { "extra-overlay-stubs", no_argument, NULL, OPTION_SPU_NON_OVERLAY_STUBS },
 616   { "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
 617   { "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
 618   { "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
 619   { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
 620   { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
 621   { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
 622   { "num-regions", required_argument, NULL, OPTION_SPU_NUM_LINES },
 623   { "region-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 624   { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
 625   { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
 626   { "extra-stack-space", required_argument, NULL, OPTION_SPU_EXTRA_STACK },
 627   { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
 628 '
 629
 630 PARSE_AND_LIST_OPTIONS='
 631   fprintf (file, _("\
 632   --plugin                    Make SPU plugin.\n\
 633   --no-overlays               No overlay handling.\n\
 634   --emit-stub-syms            Add symbols on overlay call stubs.\n\
 635   --extra-overlay-stubs       Add stubs on all calls out of overlay regions.\n\
 636   --local-store=lo:hi         Valid address range.\n\
 637   --stack-analysis            Estimate maximum stack requirement.\n\
 638   --emit-stack-syms           Add sym giving stack needed for each func.\n\
 639   --auto-overlay [=filename]  Create an overlay script in filename if\n\
 640                               executable does not fit in local store.\n\
 641   --auto-relink               Rerun linker using auto-overlay script.\n\
 642   --overlay-rodata            Place read-only data with associated function\n\
 643                               code in overlays.\n\
 644   --num-regions               Number of overlay buffers (default 1).\n\
 645   --region-size               Size of overlay buffers (default 0, auto).\n\
 646   --fixed-space=bytes         Local store for non-overlay code and data.\n\
 647   --reserved-space=bytes      Local store for stack and heap.  If not specified\n\
 648                               ld will estimate stack size and assume no heap.\n\
 649   --extra-stack-space=bytes   Space for negative sp access (default 2000) if\n\
 650                               --reserved-space not given.\n\
 651   --soft-icache               Generate software icache overlays.\n\
 652   --num-lines                 Number of soft-icache lines (default 32).\n\
 653   --line-size                 Size of soft-icache lines (default 1k).\n\
 654   --non-ia-text               Allow non-icache code in icache lines.\n\
 655   --lrlive-analysis           Scan function prologue for lr liveness.\n"
 656                    ));
 657 '
 658
 659 PARSE_AND_LIST_ARGS_CASES='
 660     case OPTION_SPU_PLUGIN:
 661       spu_elf_plugin (1);
 662       break;
 663
 664     case OPTION_SPU_NO_OVERLAYS:
 665       params.ovly_flavour = ovly_none;
 666       break;
 667
 668     case OPTION_SPU_STUB_SYMS:
 669       params.emit_stub_syms = 1;
 670       break;
 671
 672     case OPTION_SPU_NON_OVERLAY_STUBS:
 673       params.non_overlay_stubs = 1;
 674       break;
 675
 676     case OPTION_SPU_LOCAL_STORE:
 677       {
 678         char *end;
 679         params.local_store_lo = strtoul (optarg, &end, 0);
 680         if (*end == '\'':'\'')
 681           {
 682             params.local_store_hi = strtoul (end + 1, &end, 0);
 683             if (*end == 0)
 684               break;
 685           }
 686         einfo (_("%P%F: invalid --local-store address range `%s'\''\n"), optarg);
 687       }
 688       break;
 689
 690     case OPTION_SPU_STACK_ANALYSIS:
 691       params.stack_analysis = 1;
 692       break;
 693
 694     case OPTION_SPU_STACK_SYMS:
 695       params.emit_stack_syms = 1;
 696       break;
 697
 698     case OPTION_SPU_AUTO_OVERLAY:
 699       params.auto_overlay |= 1;
 700       if (optarg != NULL)
 701         {
 702           auto_overlay_file = optarg;
 703           break;
 704         }
 705       /* Fall thru */
 706
 707     case OPTION_SPU_AUTO_RELINK:
 708       params.auto_overlay |= 2;
 709       break;
 710
 711     case OPTION_SPU_OVERLAY_RODATA:
 712       params.auto_overlay |= 4;
 713       break;
 714
 715     case OPTION_SPU_SOFT_ICACHE:
 716       params.ovly_flavour = ovly_soft_icache;
 717       if (!num_lines_set)
 718         params.num_lines = 32;
 719       else if ((params.num_lines & -params.num_lines) != params.num_lines)
 720         einfo (_("%P%F: invalid --num-lines/--num-regions `%u'\''\n"),
 721                params.num_lines);
 722       if (!line_size_set)
 723         params.line_size = 1024;
 724       else if ((params.line_size & -params.line_size) != params.line_size)
 725         einfo (_("%P%F: invalid --line-size/--region-size `%u'\''\n"),
 726                params.line_size);
 727       break;
 728
 729     case OPTION_SPU_LRLIVE:
 730       params.lrlive_analysis = 1;
 731       break;
 732
 733     case OPTION_SPU_NON_IA_TEXT:
 734       params.non_ia_text = 1;
 735       break;
 736
 737     case OPTION_SPU_NUM_LINES:
 738       {
 739         char *end;
 740         params.num_lines = strtoul (optarg, &end, 0);
 741         num_lines_set = 1;
 742         if (*end == 0
 743             && (params.ovly_flavour != ovly_soft_icache
 744                 || (params.num_lines & -params.num_lines) == params.num_lines))
 745           break;
 746         einfo (_("%P%F: invalid --num-lines/--num-regions `%s'\''\n"), optarg);
 747       }
 748       break;
 749
 750     case OPTION_SPU_LINE_SIZE:
 751       {
 752         char *end;
 753         params.line_size = strtoul (optarg, &end, 0);
 754         line_size_set = 1;
 755         if (*end == 0
 756             && (params.ovly_flavour != ovly_soft_icache
 757                 || (params.line_size & -params.line_size) == params.line_size))
 758           break;
 759         einfo (_("%P%F: invalid --line-size/--region-size `%s'\''\n"), optarg);
 760       }
 761       break;
 762
 763     case OPTION_SPU_FIXED_SPACE:
 764       {
 765         char *end;
 766         params.auto_overlay_fixed = strtoul (optarg, &end, 0);
 767         if (*end != 0)
 768           einfo (_("%P%F: invalid --fixed-space value `%s'\''\n"), optarg);
 769       }
 770       break;
 771
 772     case OPTION_SPU_RESERVED_SPACE:
 773       {
 774         char *end;
 775         params.auto_overlay_reserved = strtoul (optarg, &end, 0);
 776         if (*end != 0)
 777           einfo (_("%P%F: invalid --reserved-space value `%s'\''\n"), optarg);
 778       }
 779       break;
 780
 781     case OPTION_SPU_EXTRA_STACK:
 782       {
 783         char *end;
 784         params.extra_stack_space = strtol (optarg, &end, 0);
 785         if (*end != 0)
 786           einfo (_("%P%F: invalid --extra-stack-space value `%s'\''\n"), optarg);
 787       }
 788       break;
 789
 790     case OPTION_SPU_NO_AUTO_OVERLAY:
 791       params.auto_overlay = 0;
 792       if (optarg != NULL)
 793         {
 794           struct tflist *tf;
 795           size_t len;
 796
 797           if (tmp_file_list == NULL)
 798             atexit (clean_tmp);
 799
 800           len = strlen (optarg) + 1;
 801           tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
 802           memcpy (tf->name, optarg, len);
 803           tf->next = tmp_file_list;
 804           tmp_file_list = tf;
 805           break;
 806         }
 807       break;
 808 '
 809
 810 LDEMUL_AFTER_OPEN=spu_after_open
 811 LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
 812 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
 813 LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target