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, 0, 0,
  41   0, 0x3ffff,
  42   1, 0, 16, 0, 0, 2000
  43 };
  44
  45 static unsigned int no_overlays = 0;
  46 static unsigned int num_lines_set = 0;
  47 static unsigned int line_size_set = 0;
  48 static char *auto_overlay_file = 0;
  49 int my_argc;
  50 char **my_argv;
  51
  52 static const char ovl_mgr[] = {
  53 EOF
  54
  55 if ! cat ${srcdir}/emultempl/spu_ovl.o_c >> e${EMULATION_NAME}.c
  56 then
  57   echo >&2 "Missing ${srcdir}/emultempl/spu_ovl.o_c"
  58   echo >&2 "You must build gas/as-new with --target=spu"
  59   exit 1
  60 fi
  61
  62 fragment <<EOF
  63 };
  64
  65 static const char icache_mgr[] = {
  66 EOF
  67
  68 if ! cat ${srcdir}/emultempl/spu_icache.o_c >> e${EMULATION_NAME}.c
  69 then
  70   echo >&2 "Missing ${srcdir}/emultempl/spu_icache.o_c"
  71   echo >&2 "You must build gas/as-new with --target=spu"
  72   exit 1
  73 fi
  74
  75 fragment <<EOF
  76 };
  77
  78 static const struct _ovl_stream ovl_mgr_stream = {
  79   ovl_mgr,
  80   ovl_mgr + sizeof (ovl_mgr)
  81 };
  82
  83 static const struct _ovl_stream icache_mgr_stream = {
  84   icache_mgr,
  85   icache_mgr + sizeof (icache_mgr)
  86 };
  87
  88
  89 static int
  90 is_spu_target (void)
  91 {
  92   extern const bfd_target bfd_elf32_spu_vec;
  93
  94   return link_info.output_bfd->xvec == &bfd_elf32_spu_vec;
  95 }
  96
  97 /* Create our note section.  */
  98
  99 static void
 100 spu_after_open (void)
 101 {
 102   if (is_spu_target ())
 103     {
 104       /* Pass params to backend.  */
 105       if ((params.auto_overlay & AUTO_OVERLAY) == 0)
 106         params.auto_overlay = 0;
 107       params.emit_stub_syms |= link_info.emitrelocations;
 108       spu_elf_setup (&link_info, &params);
 109
 110       if (link_info.relocatable)
 111         lang_add_unique (".text.ia.*");
 112
 113       if (!link_info.relocatable
 114           && link_info.input_bfds != NULL
 115           && !spu_elf_create_sections (&link_info))
 116         einfo ("%X%P: can not create note section: %E\n");
 117     }
 118
 119   gld${EMULATION_NAME}_after_open ();
 120 }
 121
 122 /* If O is NULL, add section S at the end of output section OUTPUT_NAME.
 123    If O is not NULL, add section S at the beginning of output section O,
 124    except for soft-icache which adds to the end.
 125
 126    Really, we should be duplicating ldlang.c map_input_to_output_sections
 127    logic here, ie. using the linker script to find where the section
 128    goes.  That's rather a lot of code, and we don't want to run
 129    map_input_to_output_sections again because most sections are already
 130    mapped.  So cheat, and put the section in a fixed place, ignoring any
 131    attempt via a linker script to put .stub, .ovtab, and built-in
 132    overlay manager code somewhere else.  */
 133
 134 static void
 135 spu_place_special_section (asection *s, asection *o, const char *output_name)
 136 {
 137   lang_output_section_statement_type *os;
 138
 139   if (o != NULL)
 140     output_name = o->name;
 141   os = lang_output_section_find (output_name);
 142   if (os == NULL)
 143     {
 144       os = gld${EMULATION_NAME}_place_orphan (s, output_name, 0);
 145       os->addr_tree = NULL;
 146     }
 147   else if (params.ovly_flavour != ovly_soft_icache
 148            && o != NULL && os->children.head != NULL)
 149     {
 150       lang_statement_list_type add;
 151
 152       lang_list_init (&add);
 153       lang_add_section (&add, s, os);
 154       *add.tail = os->children.head;
 155       os->children.head = add.head;
 156     }
 157   else
 158     {
 159       if (params.ovly_flavour == ovly_soft_icache && o != NULL)
 160         {
 161           /* Pad this stub section so that it finishes at the
 162              end of the icache line.  */
 163           etree_type *e_size;
 164
 165           push_stat_ptr (&os->children);
 166           e_size = exp_intop (params.line_size - s->size);
 167           lang_add_assignment (exp_assop ('=', ".", e_size));
 168           pop_stat_ptr ();
 169         }
 170       lang_add_section (&os->children, s, os);
 171     }
 172
 173   s->output_section->size += s->size;
 174 }
 175
 176 /* Load built-in overlay manager.  */
 177
 178 static bfd_size_type
 179 spu_elf_load_ovl_mgr (void)
 180 {
 181   struct elf_link_hash_entry *h;
 182   const char *ovly_mgr_entry;
 183   const struct _ovl_stream *mgr_stream;
 184   bfd_size_type total = 0;
 185
 186   ovly_mgr_entry = "__ovly_load";
 187   mgr_stream = &ovl_mgr_stream;
 188   if (params.ovly_flavour == ovly_soft_icache)
 189     {
 190       ovly_mgr_entry = "__icache_br_handler";
 191       mgr_stream = &icache_mgr_stream;
 192     }
 193   h = elf_link_hash_lookup (elf_hash_table (&link_info),
 194                             ovly_mgr_entry, FALSE, FALSE, FALSE);
 195
 196   if (h != NULL
 197       && (h->root.type == bfd_link_hash_defined
 198           || h->root.type == bfd_link_hash_defweak)
 199       && h->def_regular)
 200     {
 201       /* User supplied __ovly_load.  */
 202     }
 203   else if (mgr_stream->start == mgr_stream->end)
 204     einfo ("%F%P: no built-in overlay manager\n");
 205   else
 206     {
 207       lang_input_statement_type *ovl_is;
 208
 209       ovl_is = lang_add_input_file ("builtin ovl_mgr",
 210                                     lang_input_file_is_file_enum,
 211                                     NULL);
 212
 213       if (!spu_elf_open_builtin_lib (&ovl_is->the_bfd, mgr_stream))
 214         einfo ("%X%P: can not open built-in overlay manager: %E\n");
 215       else
 216         {
 217           asection *in;
 218
 219           if (!load_symbols (ovl_is, NULL))
 220             einfo ("%X%P: can not load built-in overlay manager: %E\n");
 221
 222           /* Map overlay manager sections to output sections.
 223              First try for a matching output section name, if that
 224              fails then try mapping .abc.xyz to .abc, otherwise map
 225              to .text.  */
 226           for (in = ovl_is->the_bfd->sections; in != NULL; in = in->next)
 227             if ((in->flags & (SEC_ALLOC | SEC_LOAD))
 228                 == (SEC_ALLOC | SEC_LOAD))
 229               {
 230                 const char *oname = in->name;
 231                 if (strncmp (in->name, ".ovl.init", 9) != 0)
 232                   {
 233                     total += in->size;
 234                     if (!lang_output_section_find (oname))
 235                       {
 236                         lang_output_section_statement_type *os = NULL;
 237                         char *p = strchr (oname + 1, '.');
 238                         if (p != NULL)
 239                           {
 240                             size_t len = p - oname;
 241                             p = memcpy (xmalloc (len + 1), oname, len);
 242                             p[len] = '\0';
 243                             os = lang_output_section_find (p);
 244                             free (p);
 245                           }
 246                         if (os != NULL)
 247                           oname = os->name;
 248                         else
 249                           oname = ".text";
 250                       }
 251                   }
 252
 253                 spu_place_special_section (in, NULL, oname);
 254               }
 255         }
 256     }
 257   return total;
 258 }
 259
 260 /* Go find if we need to do anything special for overlays.  */
 261
 262 static void
 263 spu_before_allocation (void)
 264 {
 265   if (is_spu_target ()
 266       && !link_info.relocatable
 267       && !no_overlays)
 268     {
 269       int ret;
 270
 271       /* Size the sections.  This is premature, but we need to know the
 272          rough layout so that overlays can be found.  */
 273       expld.phase = lang_mark_phase_enum;
 274       expld.dataseg.phase = exp_dataseg_none;
 275       one_lang_size_sections_pass (NULL, TRUE);
 276
 277       /* Find overlays by inspecting section vmas.  */
 278       ret = spu_elf_find_overlays (&link_info);
 279       if (ret == 0)
 280         einfo ("%X%P: can not find overlays: %E\n");
 281       else if (ret == 2)
 282         {
 283           lang_output_section_statement_type *os;
 284
 285           if (params.auto_overlay != 0)
 286             {
 287               einfo ("%P: --auto-overlay ignored with user overlay script\n");
 288               params.auto_overlay = 0;
 289             }
 290
 291           /* Ensure alignment of overlay sections is sufficient.  */
 292           for (os = &lang_output_section_statement.head->output_section_statement;
 293                os != NULL;
 294                os = os->next)
 295             if (os->bfd_section != NULL
 296                 && spu_elf_section_data (os->bfd_section) != NULL
 297                 && spu_elf_section_data (os->bfd_section)->u.o.ovl_index != 0)
 298               {
 299                 if (os->bfd_section->alignment_power < 4)
 300                   os->bfd_section->alignment_power = 4;
 301
 302                 /* Also ensure size rounds up.  */
 303                 os->block_value = 16;
 304               }
 305
 306           ret = spu_elf_size_stubs (&link_info);
 307           if (ret == 0)
 308             einfo ("%X%P: can not size overlay stubs: %E\n");
 309           else if (ret == 2)
 310             spu_elf_load_ovl_mgr ();
 311
 312           spu_elf_place_overlay_data (&link_info);
 313         }
 314
 315       /* We must not cache anything from the preliminary sizing.  */
 316       lang_reset_memory_regions ();
 317     }
 318
 319   if (is_spu_target ()
 320       && !link_info.relocatable)
 321     spu_elf_size_sections (link_info.output_bfd, &link_info);
 322
 323   gld${EMULATION_NAME}_before_allocation ();
 324 }
 325
 326 struct tflist {
 327   struct tflist *next;
 328   char name[9];
 329 };
 330
 331 static struct tflist *tmp_file_list;
 332
 333 static void clean_tmp (void)
 334 {
 335   for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
 336     unlink (tmp_file_list->name);
 337 }
 338
 339 static int
 340 new_tmp_file (char **fname)
 341 {
 342   struct tflist *tf;
 343   int fd;
 344
 345   if (tmp_file_list == NULL)
 346     atexit (clean_tmp);
 347   tf = xmalloc (sizeof (*tf));
 348   tf->next = tmp_file_list;
 349   tmp_file_list = tf;
 350   memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
 351   *fname = tf->name;
 352 #ifdef HAVE_MKSTEMP
 353   fd = mkstemp (*fname);
 354 #else
 355   *fname = mktemp (*fname);
 356   if (*fname == NULL)
 357     return -1;
 358   fd = open (fname, O_RDWR | O_CREAT | O_EXCL, 0600);
 359 #endif
 360   return fd;
 361 }
 362
 363 static FILE *
 364 spu_elf_open_overlay_script (void)
 365 {
 366   FILE *script = NULL;
 367
 368   if (auto_overlay_file == NULL)
 369     {
 370       int fd = new_tmp_file (&auto_overlay_file);
 371       if (fd == -1)
 372         goto file_err;
 373       script = fdopen (fd, "w");
 374     }
 375   else
 376     script = fopen (auto_overlay_file, "w");
 377
 378   if (script == NULL)
 379     {
 380     file_err:
 381       einfo ("%F%P: can not open script: %E\n");
 382     }
 383   return script;
 384 }
 385
 386 static void
 387 spu_elf_relink (void)
 388 {
 389   char **argv = xmalloc ((my_argc + 4) * sizeof (*argv));
 390
 391   memcpy (argv, my_argv, my_argc * sizeof (*argv));
 392   argv[my_argc++] = "--no-auto-overlay";
 393   if (tmp_file_list->name == auto_overlay_file)
 394     argv[my_argc - 1] = concat (argv[my_argc - 1], "=",
 395                                 auto_overlay_file, (const char *) NULL);
 396   argv[my_argc++] = "-T";
 397   argv[my_argc++] = auto_overlay_file;
 398   argv[my_argc] = 0;
 399   execvp (argv[0], (char *const *) argv);
 400   perror (argv[0]);
 401   _exit (127);
 402 }
 403
 404 /* Final emulation specific call.  */
 405
 406 static void
 407 gld${EMULATION_NAME}_finish (void)
 408 {
 409   int need_laying_out;
 410
 411   need_laying_out = bfd_elf_discard_info (link_info.output_bfd, &link_info);
 412
 413   gld${EMULATION_NAME}_map_segments (need_laying_out);
 414
 415   if (is_spu_target ())
 416     {
 417       if (params.local_store_lo < params.local_store_hi)
 418         {
 419           asection *s;
 420
 421           s = spu_elf_check_vma (&link_info);
 422           if (s != NULL && !params.auto_overlay)
 423             einfo ("%X%P: %A exceeds local store range\n", s);
 424         }
 425       else if (params.auto_overlay)
 426         einfo ("%P: --auto-overlay ignored with zero local store range\n");
 427     }
 428
 429   finish_default ();
 430 }
 431
 432 static char *
 433 gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
 434 {
 435   my_argc = argc;
 436   my_argv = argv;
 437   return ldemul_default_target (argc, argv);
 438 }
 439
 440 EOF
 441
 442 if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
 443   fragment <<EOF
 444 #include <errno.h>
 445 #include "filenames.h"
 446 #include "libiberty.h"
 447
 448 static const char *
 449 base_name (const char *path)
 450 {
 451   const char *file = strrchr (path, '/');
 452 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 453   {
 454     char *bslash = strrchr (path, '\\\\');
 455
 456     if (file == NULL || (bslash != NULL && bslash > file))
 457       file = bslash;
 458     if (file == NULL
 459         && path[0] != '\0'
 460         && path[1] == ':')
 461       file = path + 1;
 462   }
 463 #endif
 464   if (file == NULL)
 465     file = path;
 466   else
 467     ++file;
 468   return file;
 469 }
 470
 471 /* This function is called when building a ppc32 or ppc64 executable
 472    to handle embedded spu images.  */
 473 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 474
 475 bfd_boolean
 476 embedded_spu_file (lang_input_statement_type *entry, const char *flags)
 477 {
 478   const char *cmd[6];
 479   const char *pex_return;
 480   const char *sym;
 481   char *handle, *p;
 482   char *oname;
 483   int fd;
 484   int status;
 485   union lang_statement_union **old_stat_tail;
 486   union lang_statement_union **old_file_tail;
 487   union lang_statement_union *new_ent;
 488   lang_input_statement_type *search;
 489
 490   if (entry->the_bfd->format != bfd_object
 491       || strcmp (entry->the_bfd->xvec->name, "elf32-spu") != 0
 492       || (entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_EXEC
 493           && entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_DYN))
 494     return FALSE;
 495
 496   /* Use the filename as the symbol marking the program handle struct.  */
 497   sym = base_name (entry->the_bfd->filename);
 498
 499   handle = xstrdup (sym);
 500   for (p = handle; *p; ++p)
 501     if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
 502       *p = '_';
 503
 504   fd = new_tmp_file (&oname);
 505   if (fd == -1)
 506     return FALSE;
 507   close (fd);
 508
 509   for (search = (lang_input_statement_type *) input_file_chain.head;
 510        search != NULL;
 511        search = (lang_input_statement_type *) search->next_real_file)
 512     if (search->filename != NULL)
 513       {
 514         const char *infile = base_name (search->filename);
 515
 516         if (strncmp (infile, "crtbegin", 8) == 0)
 517           {
 518             if (infile[8] == 'S')
 519               flags = concat (flags, " -fPIC", (const char *) NULL);
 520             else if (infile[8] == 'T')
 521               flags = concat (flags, " -fpie", (const char *) NULL);
 522             break;
 523           }
 524       }
 525
 526   cmd[0] = EMBEDSPU;
 527   cmd[1] = flags;
 528   cmd[2] = handle;
 529   cmd[3] = entry->the_bfd->filename;
 530   cmd[4] = oname;
 531   cmd[5] = NULL;
 532   if (trace_file_tries)
 533     {
 534       info_msg (_("running: %s \"%s\" \"%s\" \"%s\" \"%s\"\n"),
 535                 cmd[0], cmd[1], cmd[2], cmd[3], cmd[4]);
 536       fflush (stdout);
 537     }
 538
 539   pex_return = pex_one (PEX_SEARCH | PEX_LAST, cmd[0], (char *const *) cmd,
 540                         cmd[0], NULL, NULL, &status, &errno);
 541   if (NULL != pex_return) {
 542       if (strcmp ("embedspu", EMBEDSPU) != 0)
 543         {
 544           cmd[0] = "embedspu";
 545           pex_return = pex_one (PEX_SEARCH | PEX_LAST, cmd[0], (char *const *) cmd,
 546                                 cmd[0], NULL, NULL, &status, &errno);
 547         }
 548       if (NULL != pex_return) {
 549         perror (pex_return);
 550         _exit (127);
 551       }
 552   }
 553   if (status)
 554     return FALSE;
 555
 556
 557   old_stat_tail = stat_ptr->tail;
 558   old_file_tail = input_file_chain.tail;
 559   if (lang_add_input_file (oname, lang_input_file_is_file_enum, NULL) == NULL)
 560     return FALSE;
 561
 562   /* lang_add_input_file puts the new list entry at the end of the statement
 563      and input file lists.  Move it to just after the current entry.  */
 564   new_ent = *old_stat_tail;
 565   *old_stat_tail = NULL;
 566   stat_ptr->tail = old_stat_tail;
 567   *old_file_tail = NULL;
 568   input_file_chain.tail = old_file_tail;
 569   new_ent->header.next = entry->header.next;
 570   entry->header.next = new_ent;
 571   new_ent->input_statement.next_real_file = entry->next_real_file;
 572   entry->next_real_file = new_ent;
 573
 574   /* Ensure bfd sections are excluded from the output.  */
 575   bfd_section_list_clear (entry->the_bfd);
 576   entry->loaded = TRUE;
 577   return TRUE;
 578 }
 579
 580 EOF
 581 fi
 582
 583 # Define some shell vars to insert bits of code into the standard elf
 584 # parse_args and list_options functions.
 585 #
 586 PARSE_AND_LIST_PROLOGUE='
 587 #define OPTION_SPU_PLUGIN               301
 588 #define OPTION_SPU_NO_OVERLAYS          (OPTION_SPU_PLUGIN + 1)
 589 #define OPTION_SPU_COMPACT_STUBS        (OPTION_SPU_NO_OVERLAYS + 1)
 590 #define OPTION_SPU_STUB_SYMS            (OPTION_SPU_COMPACT_STUBS + 1)
 591 #define OPTION_SPU_NON_OVERLAY_STUBS    (OPTION_SPU_STUB_SYMS + 1)
 592 #define OPTION_SPU_LOCAL_STORE          (OPTION_SPU_NON_OVERLAY_STUBS + 1)
 593 #define OPTION_SPU_STACK_ANALYSIS       (OPTION_SPU_LOCAL_STORE + 1)
 594 #define OPTION_SPU_STACK_SYMS           (OPTION_SPU_STACK_ANALYSIS + 1)
 595 #define OPTION_SPU_AUTO_OVERLAY         (OPTION_SPU_STACK_SYMS + 1)
 596 #define OPTION_SPU_AUTO_RELINK          (OPTION_SPU_AUTO_OVERLAY + 1)
 597 #define OPTION_SPU_OVERLAY_RODATA       (OPTION_SPU_AUTO_RELINK + 1)
 598 #define OPTION_SPU_SOFT_ICACHE          (OPTION_SPU_OVERLAY_RODATA + 1)
 599 #define OPTION_SPU_LINE_SIZE            (OPTION_SPU_SOFT_ICACHE + 1)
 600 #define OPTION_SPU_NUM_LINES            (OPTION_SPU_LINE_SIZE + 1)
 601 #define OPTION_SPU_LRLIVE               (OPTION_SPU_NUM_LINES + 1)
 602 #define OPTION_SPU_NON_IA_TEXT          (OPTION_SPU_LRLIVE + 1)
 603 #define OPTION_SPU_FIXED_SPACE          (OPTION_SPU_NON_IA_TEXT + 1)
 604 #define OPTION_SPU_RESERVED_SPACE       (OPTION_SPU_FIXED_SPACE + 1)
 605 #define OPTION_SPU_EXTRA_STACK          (OPTION_SPU_RESERVED_SPACE + 1)
 606 #define OPTION_SPU_NO_AUTO_OVERLAY      (OPTION_SPU_EXTRA_STACK + 1)
 607 #define OPTION_SPU_EMIT_FIXUPS          (OPTION_SPU_NO_AUTO_OVERLAY + 1)
 608 '
 609
 610 PARSE_AND_LIST_LONGOPTS='
 611   { "plugin", no_argument, NULL, OPTION_SPU_PLUGIN },
 612   { "soft-icache", no_argument, NULL, OPTION_SPU_SOFT_ICACHE },
 613   { "lrlive-analysis", no_argument, NULL, OPTION_SPU_LRLIVE },
 614   { "num-lines", required_argument, NULL, OPTION_SPU_NUM_LINES },
 615   { "line-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 616   { "non-ia-text", no_argument, NULL, OPTION_SPU_NON_IA_TEXT },
 617   { "no-overlays", no_argument, NULL, OPTION_SPU_NO_OVERLAYS },
 618   { "compact-stubs", no_argument, NULL, OPTION_SPU_COMPACT_STUBS },
 619   { "emit-stub-syms", no_argument, NULL, OPTION_SPU_STUB_SYMS },
 620   { "extra-overlay-stubs", no_argument, NULL, OPTION_SPU_NON_OVERLAY_STUBS },
 621   { "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
 622   { "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
 623   { "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
 624   { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
 625   { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
 626   { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
 627   { "num-regions", required_argument, NULL, OPTION_SPU_NUM_LINES },
 628   { "region-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 629   { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
 630   { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
 631   { "extra-stack-space", required_argument, NULL, OPTION_SPU_EXTRA_STACK },
 632   { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
 633   { "emit-fixups", optional_argument, NULL, OPTION_SPU_EMIT_FIXUPS },
 634 '
 635
 636 PARSE_AND_LIST_OPTIONS='
 637   fprintf (file, _("\
 638   --plugin                    Make SPU plugin.\n\
 639   --no-overlays               No overlay handling.\n\
 640   --compact-stubs             Use smaller and possibly slower call stubs.\n\
 641   --emit-stub-syms            Add symbols on overlay call stubs.\n\
 642   --extra-overlay-stubs       Add stubs on all calls out of overlay regions.\n\
 643   --local-store=lo:hi         Valid address range.\n\
 644   --stack-analysis            Estimate maximum stack requirement.\n\
 645   --emit-stack-syms           Add sym giving stack needed for each func.\n\
 646   --auto-overlay [=filename]  Create an overlay script in filename if\n\
 647                               executable does not fit in local store.\n\
 648   --auto-relink               Rerun linker using auto-overlay script.\n\
 649   --overlay-rodata            Place read-only data with associated function\n\
 650                               code in overlays.\n\
 651   --num-regions               Number of overlay buffers (default 1).\n\
 652   --region-size               Size of overlay buffers (default 0, auto).\n\
 653   --fixed-space=bytes         Local store for non-overlay code and data.\n\
 654   --reserved-space=bytes      Local store for stack and heap.  If not specified\n\
 655                               ld will estimate stack size and assume no heap.\n\
 656   --extra-stack-space=bytes   Space for negative sp access (default 2000) if\n\
 657                               --reserved-space not given.\n\
 658   --soft-icache               Generate software icache overlays.\n\
 659   --num-lines                 Number of soft-icache lines (default 32).\n\
 660   --line-size                 Size of soft-icache lines (default 1k).\n\
 661   --non-ia-text               Allow non-icache code in icache lines.\n\
 662   --lrlive-analysis           Scan function prologue for lr liveness.\n"
 663                    ));
 664 '
 665
 666 PARSE_AND_LIST_ARGS_CASES='
 667     case OPTION_SPU_PLUGIN:
 668       spu_elf_plugin (1);
 669       break;
 670
 671     case OPTION_SPU_NO_OVERLAYS:
 672       no_overlays = 1;
 673       break;
 674
 675     case OPTION_SPU_COMPACT_STUBS:
 676       params.compact_stub = 1;
 677       break;
 678
 679     case OPTION_SPU_STUB_SYMS:
 680       params.emit_stub_syms = 1;
 681       break;
 682
 683     case OPTION_SPU_NON_OVERLAY_STUBS:
 684       params.non_overlay_stubs = 1;
 685       break;
 686
 687     case OPTION_SPU_LOCAL_STORE:
 688       {
 689         char *end;
 690         params.local_store_lo = strtoul (optarg, &end, 0);
 691         if (*end == '\'':'\'')
 692           {
 693             params.local_store_hi = strtoul (end + 1, &end, 0);
 694             if (*end == 0)
 695               break;
 696           }
 697         einfo (_("%P%F: invalid --local-store address range `%s'\''\n"), optarg);
 698       }
 699       break;
 700
 701     case OPTION_SPU_STACK_ANALYSIS:
 702       params.stack_analysis = 1;
 703       break;
 704
 705     case OPTION_SPU_STACK_SYMS:
 706       params.emit_stack_syms = 1;
 707       break;
 708
 709     case OPTION_SPU_AUTO_OVERLAY:
 710       params.auto_overlay |= 1;
 711       if (optarg != NULL)
 712         {
 713           auto_overlay_file = optarg;
 714           break;
 715         }
 716       /* Fall thru */
 717
 718     case OPTION_SPU_AUTO_RELINK:
 719       params.auto_overlay |= 2;
 720       break;
 721
 722     case OPTION_SPU_OVERLAY_RODATA:
 723       params.auto_overlay |= 4;
 724       break;
 725
 726     case OPTION_SPU_SOFT_ICACHE:
 727       params.ovly_flavour = ovly_soft_icache;
 728       /* Software i-cache stubs are always "compact".  */
 729       params.compact_stub = 1;
 730       if (!num_lines_set)
 731         params.num_lines = 32;
 732       else if ((params.num_lines & -params.num_lines) != params.num_lines)
 733         einfo (_("%P%F: invalid --num-lines/--num-regions `%u'\''\n"),
 734                params.num_lines);
 735       if (!line_size_set)
 736         params.line_size = 1024;
 737       else if ((params.line_size & -params.line_size) != params.line_size)
 738         einfo (_("%P%F: invalid --line-size/--region-size `%u'\''\n"),
 739                params.line_size);
 740       break;
 741
 742     case OPTION_SPU_LRLIVE:
 743       params.lrlive_analysis = 1;
 744       break;
 745
 746     case OPTION_SPU_NON_IA_TEXT:
 747       params.non_ia_text = 1;
 748       break;
 749
 750     case OPTION_SPU_NUM_LINES:
 751       {
 752         char *end;
 753         params.num_lines = strtoul (optarg, &end, 0);
 754         num_lines_set = 1;
 755         if (*end == 0
 756             && (params.ovly_flavour != ovly_soft_icache
 757                 || (params.num_lines & -params.num_lines) == params.num_lines))
 758           break;
 759         einfo (_("%P%F: invalid --num-lines/--num-regions `%s'\''\n"), optarg);
 760       }
 761       break;
 762
 763     case OPTION_SPU_LINE_SIZE:
 764       {
 765         char *end;
 766         params.line_size = strtoul (optarg, &end, 0);
 767         line_size_set = 1;
 768         if (*end == 0
 769             && (params.ovly_flavour != ovly_soft_icache
 770                 || (params.line_size & -params.line_size) == params.line_size))
 771           break;
 772         einfo (_("%P%F: invalid --line-size/--region-size `%s'\''\n"), optarg);
 773       }
 774       break;
 775
 776     case OPTION_SPU_FIXED_SPACE:
 777       {
 778         char *end;
 779         params.auto_overlay_fixed = strtoul (optarg, &end, 0);
 780         if (*end != 0)
 781           einfo (_("%P%F: invalid --fixed-space value `%s'\''\n"), optarg);
 782       }
 783       break;
 784
 785     case OPTION_SPU_RESERVED_SPACE:
 786       {
 787         char *end;
 788         params.auto_overlay_reserved = strtoul (optarg, &end, 0);
 789         if (*end != 0)
 790           einfo (_("%P%F: invalid --reserved-space value `%s'\''\n"), optarg);
 791       }
 792       break;
 793
 794     case OPTION_SPU_EXTRA_STACK:
 795       {
 796         char *end;
 797         params.extra_stack_space = strtol (optarg, &end, 0);
 798         if (*end != 0)
 799           einfo (_("%P%F: invalid --extra-stack-space value `%s'\''\n"), optarg);
 800       }
 801       break;
 802
 803     case OPTION_SPU_NO_AUTO_OVERLAY:
 804       params.auto_overlay = 0;
 805       if (optarg != NULL)
 806         {
 807           struct tflist *tf;
 808           size_t len;
 809
 810           if (tmp_file_list == NULL)
 811             atexit (clean_tmp);
 812
 813           len = strlen (optarg) + 1;
 814           tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
 815           memcpy (tf->name, optarg, len);
 816           tf->next = tmp_file_list;
 817           tmp_file_list = tf;
 818           break;
 819         }
 820       break;
 821
 822     case OPTION_SPU_EMIT_FIXUPS:
 823       params.emit_fixups = 1;
 824       break;
 825 '
 826
 827 LDEMUL_AFTER_OPEN=spu_after_open
 828 LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
 829 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
 830 LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target