ld/emultempl/spuelf.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is part of the GNU Binutils.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20 # MA 02110-1301, USA.
  21 #
  22
  23 # This file is sourced from elf32.em, and defines extra spu specific
  24 # features.
  25 #
  26 fragment <<EOF
  27 #include "ldctor.h"
  28 #include "elf32-spu.h"
  29
  30 static void spu_place_special_section (asection *, asection *, const char *);
  31 static bfd_size_type spu_elf_load_ovl_mgr (void);
  32 static FILE *spu_elf_open_overlay_script (void);
  33 static void spu_elf_relink (void);
  34
  35 static struct spu_elf_params params =
  36 {
  37   &spu_place_special_section,
  38   &spu_elf_load_ovl_mgr,
  39   &spu_elf_open_overlay_script,
  40   &spu_elf_relink,
  41   0, ovly_normal, 0, 0, 0, 0, 0, 0, 0, 0,
  42   0, 0x3ffff,
  43   1, 0, 16, 0, 0, 2000
  44 };
  45
  46 static unsigned int no_overlays = 0;
  47 static unsigned int num_lines_set = 0;
  48 static unsigned int line_size_set = 0;
  49 static char *auto_overlay_file = 0;
  50 int my_argc;
  51 char **my_argv;
  52
  53 static const char ovl_mgr[] = {
  54 EOF
  55
  56 if ! cat ${srcdir}/emultempl/spu_ovl.o_c >> e${EMULATION_NAME}.c
  57 then
  58   echo >&2 "Missing ${srcdir}/emultempl/spu_ovl.o_c"
  59   echo >&2 "You must build gas/as-new with --target=spu"
  60   exit 1
  61 fi
  62
  63 fragment <<EOF
  64 };
  65
  66 static const char icache_mgr[] = {
  67 EOF
  68
  69 if ! cat ${srcdir}/emultempl/spu_icache.o_c >> e${EMULATION_NAME}.c
  70 then
  71   echo >&2 "Missing ${srcdir}/emultempl/spu_icache.o_c"
  72   echo >&2 "You must build gas/as-new with --target=spu"
  73   exit 1
  74 fi
  75
  76 fragment <<EOF
  77 };
  78
  79 static const struct _ovl_stream ovl_mgr_stream = {
  80   ovl_mgr,
  81   ovl_mgr + sizeof (ovl_mgr)
  82 };
  83
  84 static const struct _ovl_stream icache_mgr_stream = {
  85   icache_mgr,
  86   icache_mgr + sizeof (icache_mgr)
  87 };
  88
  89
  90 static int
  91 is_spu_target (void)
  92 {
  93   extern const bfd_target bfd_elf32_spu_vec;
  94
  95   return link_info.output_bfd->xvec == &bfd_elf32_spu_vec;
  96 }
  97
  98 /* Create our note section.  */
  99
 100 static void
 101 spu_after_open (void)
 102 {
 103   if (is_spu_target ())
 104     {
 105       /* Pass params to backend.  */
 106       if ((params.auto_overlay & AUTO_OVERLAY) == 0)
 107         params.auto_overlay = 0;
 108       params.emit_stub_syms |= link_info.emitrelocations;
 109       spu_elf_setup (&link_info, &params);
 110
 111       if (link_info.relocatable)
 112         lang_add_unique (".text.ia.*");
 113
 114       if (!link_info.relocatable
 115           && link_info.input_bfds != NULL
 116           && !spu_elf_create_sections (&link_info))
 117         einfo ("%X%P: can not create note section: %E\n");
 118     }
 119
 120   gld${EMULATION_NAME}_after_open ();
 121 }
 122
 123 /* If O is NULL, add section S at the end of output section OUTPUT_NAME.
 124    If O is not NULL, add section S at the beginning of output section O,
 125    except for soft-icache which adds to the end.
 126
 127    Really, we should be duplicating ldlang.c map_input_to_output_sections
 128    logic here, ie. using the linker script to find where the section
 129    goes.  That's rather a lot of code, and we don't want to run
 130    map_input_to_output_sections again because most sections are already
 131    mapped.  So cheat, and put the section in a fixed place, ignoring any
 132    attempt via a linker script to put .stub, .ovtab, and built-in
 133    overlay manager code somewhere else.  */
 134
 135 static void
 136 spu_place_special_section (asection *s, asection *o, const char *output_name)
 137 {
 138   lang_output_section_statement_type *os;
 139
 140   if (o != NULL)
 141     os = lang_output_section_get (o);
 142   else
 143     os = lang_output_section_find (output_name);
 144   if (os == NULL)
 145     {
 146       os = gld${EMULATION_NAME}_place_orphan (s, output_name, 0);
 147       os->addr_tree = NULL;
 148     }
 149   else if (params.ovly_flavour != ovly_soft_icache
 150            && o != NULL && os->children.head != NULL)
 151     {
 152       lang_statement_list_type add;
 153
 154       lang_list_init (&add);
 155       lang_add_section (&add, s, NULL, os);
 156       *add.tail = os->children.head;
 157       os->children.head = add.head;
 158     }
 159   else
 160     {
 161       if (params.ovly_flavour == ovly_soft_icache && o != NULL)
 162         {
 163           /* Pad this stub section so that it finishes at the
 164              end of the icache line.  */
 165           etree_type *e_size;
 166
 167           push_stat_ptr (&os->children);
 168           e_size = exp_intop (params.line_size - s->size);
 169           lang_add_assignment (exp_assign (".", e_size, FALSE));
 170           pop_stat_ptr ();
 171         }
 172       lang_add_section (&os->children, s, NULL, os);
 173     }
 174
 175   s->output_section->size += s->size;
 176 }
 177
 178 /* Load built-in overlay manager.  */
 179
 180 static bfd_size_type
 181 spu_elf_load_ovl_mgr (void)
 182 {
 183   struct elf_link_hash_entry *h;
 184   const char *ovly_mgr_entry;
 185   const struct _ovl_stream *mgr_stream;
 186   bfd_size_type total = 0;
 187
 188   ovly_mgr_entry = "__ovly_load";
 189   mgr_stream = &ovl_mgr_stream;
 190   if (params.ovly_flavour == ovly_soft_icache)
 191     {
 192       ovly_mgr_entry = "__icache_br_handler";
 193       mgr_stream = &icache_mgr_stream;
 194     }
 195   h = elf_link_hash_lookup (elf_hash_table (&link_info),
 196                             ovly_mgr_entry, FALSE, FALSE, FALSE);
 197
 198   if (h != NULL
 199       && (h->root.type == bfd_link_hash_defined
 200           || h->root.type == bfd_link_hash_defweak)
 201       && h->def_regular)
 202     {
 203       /* User supplied __ovly_load.  */
 204     }
 205   else if (mgr_stream->start == mgr_stream->end)
 206     einfo ("%F%P: no built-in overlay manager\n");
 207   else
 208     {
 209       lang_input_statement_type *ovl_is;
 210
 211       ovl_is = lang_add_input_file ("builtin ovl_mgr",
 212                                     lang_input_file_is_file_enum,
 213                                     NULL);
 214
 215       if (!spu_elf_open_builtin_lib (&ovl_is->the_bfd, mgr_stream))
 216         einfo ("%X%P: can not open built-in overlay manager: %E\n");
 217       else
 218         {
 219           asection *in;
 220
 221           if (!load_symbols (ovl_is, NULL))
 222             einfo ("%X%P: can not load built-in overlay manager: %E\n");
 223
 224           /* Map overlay manager sections to output sections.
 225              First try for a matching output section name, if that
 226              fails then try mapping .abc.xyz to .abc, otherwise map
 227              to .text.  */
 228           for (in = ovl_is->the_bfd->sections; in != NULL; in = in->next)
 229             if ((in->flags & (SEC_ALLOC | SEC_LOAD))
 230                 == (SEC_ALLOC | SEC_LOAD))
 231               {
 232                 const char *oname = in->name;
 233                 if (strncmp (in->name, ".ovl.init", 9) != 0)
 234                   {
 235                     total += in->size;
 236                     if (!lang_output_section_find (oname))
 237                       {
 238                         lang_output_section_statement_type *os = NULL;
 239                         char *p = strchr (oname + 1, '.');
 240                         if (p != NULL)
 241                           {
 242                             size_t len = p - oname;
 243                             p = memcpy (xmalloc (len + 1), oname, len);
 244                             p[len] = '\0';
 245                             os = lang_output_section_find (p);
 246                             free (p);
 247                           }
 248                         if (os != NULL)
 249                           oname = os->name;
 250                         else
 251                           oname = ".text";
 252                       }
 253                   }
 254
 255                 spu_place_special_section (in, NULL, oname);
 256               }
 257         }
 258     }
 259   return total;
 260 }
 261
 262 /* Go find if we need to do anything special for overlays.  */
 263
 264 static void
 265 spu_before_allocation (void)
 266 {
 267   if (is_spu_target ()
 268       && !link_info.relocatable
 269       && !no_overlays)
 270     {
 271       int ret;
 272
 273       /* Size the sections.  This is premature, but we need to know the
 274          rough layout so that overlays can be found.  */
 275       expld.phase = lang_mark_phase_enum;
 276       expld.dataseg.phase = exp_dataseg_none;
 277       one_lang_size_sections_pass (NULL, TRUE);
 278
 279       /* Find overlays by inspecting section vmas.  */
 280       ret = spu_elf_find_overlays (&link_info);
 281       if (ret == 0)
 282         einfo ("%X%P: can not find overlays: %E\n");
 283       else if (ret == 2)
 284         {
 285           lang_output_section_statement_type *os;
 286
 287           if (params.auto_overlay != 0)
 288             {
 289               einfo ("%P: --auto-overlay ignored with user overlay script\n");
 290               params.auto_overlay = 0;
 291             }
 292
 293           /* Ensure alignment of overlay sections is sufficient.  */
 294           for (os = &lang_output_section_statement.head->output_section_statement;
 295                os != NULL;
 296                os = os->next)
 297             if (os->bfd_section != NULL
 298                 && spu_elf_section_data (os->bfd_section) != NULL
 299                 && spu_elf_section_data (os->bfd_section)->u.o.ovl_index != 0)
 300               {
 301                 if (os->bfd_section->alignment_power < 4)
 302                   os->bfd_section->alignment_power = 4;
 303
 304                 /* Also ensure size rounds up.  */
 305                 os->block_value = 16;
 306               }
 307
 308           ret = spu_elf_size_stubs (&link_info);
 309           if (ret == 0)
 310             einfo ("%X%P: can not size overlay stubs: %E\n");
 311           else if (ret == 2)
 312             spu_elf_load_ovl_mgr ();
 313
 314           spu_elf_place_overlay_data (&link_info);
 315         }
 316
 317       /* We must not cache anything from the preliminary sizing.  */
 318       lang_reset_memory_regions ();
 319     }
 320
 321   if (is_spu_target ()
 322       && !link_info.relocatable)
 323     spu_elf_size_sections (link_info.output_bfd, &link_info);
 324
 325   gld${EMULATION_NAME}_before_allocation ();
 326 }
 327
 328 struct tflist {
 329   struct tflist *next;
 330   char name[9];
 331 };
 332
 333 static struct tflist *tmp_file_list;
 334
 335 static void clean_tmp (void)
 336 {
 337   for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
 338     unlink (tmp_file_list->name);
 339 }
 340
 341 static int
 342 new_tmp_file (char **fname)
 343 {
 344   struct tflist *tf;
 345   int fd;
 346
 347   if (tmp_file_list == NULL)
 348     atexit (clean_tmp);
 349   tf = xmalloc (sizeof (*tf));
 350   tf->next = tmp_file_list;
 351   tmp_file_list = tf;
 352   memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
 353   *fname = tf->name;
 354 #ifdef HAVE_MKSTEMP
 355   fd = mkstemp (*fname);
 356 #else
 357   *fname = mktemp (*fname);
 358   if (*fname == NULL)
 359     return -1;
 360   fd = open (*fname, O_RDWR | O_CREAT | O_EXCL, 0600);
 361 #endif
 362   return fd;
 363 }
 364
 365 static FILE *
 366 spu_elf_open_overlay_script (void)
 367 {
 368   FILE *script = NULL;
 369
 370   if (auto_overlay_file == NULL)
 371     {
 372       int fd = new_tmp_file (&auto_overlay_file);
 373       if (fd == -1)
 374         goto file_err;
 375       script = fdopen (fd, "w");
 376     }
 377   else
 378     script = fopen (auto_overlay_file, "w");
 379
 380   if (script == NULL)
 381     {
 382     file_err:
 383       einfo ("%F%P: can not open script: %E\n");
 384     }
 385   return script;
 386 }
 387
 388 #include <errno.h>
 389
 390 static void
 391 spu_elf_relink (void)
 392 {
 393   const char *pex_return;
 394   int status;
 395   char **argv = xmalloc ((my_argc + 4) * sizeof (*argv));
 396
 397   memcpy (argv, my_argv, my_argc * sizeof (*argv));
 398   argv[my_argc++] = "--no-auto-overlay";
 399   if (tmp_file_list->name == auto_overlay_file)
 400     argv[my_argc - 1] = concat (argv[my_argc - 1], "=",
 401                                 auto_overlay_file, (const char *) NULL);
 402   argv[my_argc++] = "-T";
 403   argv[my_argc++] = auto_overlay_file;
 404   argv[my_argc] = 0;
 405
 406   pex_return = pex_one (PEX_SEARCH | PEX_LAST, (const char *) argv[0],
 407                         (char * const *) argv, (const char *) argv[0],
 408                         NULL, NULL, & status, & errno);
 409   if (pex_return != NULL)
 410     {
 411       perror (pex_return);
 412       _exit (127);
 413     }
 414   exit (status);
 415 }
 416
 417 /* Final emulation specific call.  */
 418
 419 static void
 420 gld${EMULATION_NAME}_finish (void)
 421 {
 422   if (is_spu_target ())
 423     {
 424       if (params.local_store_lo < params.local_store_hi)
 425         {
 426           asection *s;
 427
 428           s = spu_elf_check_vma (&link_info);
 429           if (s != NULL && !params.auto_overlay)
 430             einfo ("%X%P: %A exceeds local store range\n", s);
 431         }
 432       else if (params.auto_overlay)
 433         einfo ("%P: --auto-overlay ignored with zero local store range\n");
 434     }
 435
 436   finish_default ();
 437 }
 438
 439 static char *
 440 gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
 441 {
 442   my_argc = argc;
 443   my_argv = argv;
 444   return ldemul_default_target (argc, argv);
 445 }
 446
 447 EOF
 448
 449 if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
 450   fragment <<EOF
 451 #include <errno.h>
 452 #include "filenames.h"
 453 #include "libiberty.h"
 454
 455 static const char *
 456 base_name (const char *path)
 457 {
 458   const char *file = strrchr (path, '/');
 459 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 460   {
 461     char *bslash = strrchr (path, '\\\\');
 462
 463     if (file == NULL || (bslash != NULL && bslash > file))
 464       file = bslash;
 465     if (file == NULL
 466         && path[0] != '\0'
 467         && path[1] == ':')
 468       file = path + 1;
 469   }
 470 #endif
 471   if (file == NULL)
 472     file = path;
 473   else
 474     ++file;
 475   return file;
 476 }
 477
 478 /* This function is called when building a ppc32 or ppc64 executable
 479    to handle embedded spu images.  */
 480 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 481
 482 bfd_boolean
 483 embedded_spu_file (lang_input_statement_type *entry, const char *flags)
 484 {
 485   const char *cmd[6];
 486   const char *pex_return;
 487   const char *sym;
 488   char *handle, *p;
 489   char *oname;
 490   int fd;
 491   int status;
 492   union lang_statement_union **old_stat_tail;
 493   union lang_statement_union **old_file_tail;
 494   union lang_statement_union *new_ent;
 495   lang_input_statement_type *search;
 496
 497   if (entry->the_bfd->format != bfd_object
 498       || strcmp (entry->the_bfd->xvec->name, "elf32-spu") != 0
 499       || (entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_EXEC
 500           && entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_DYN))
 501     return FALSE;
 502
 503   /* Use the filename as the symbol marking the program handle struct.  */
 504   sym = base_name (entry->the_bfd->filename);
 505
 506   handle = xstrdup (sym);
 507   for (p = handle; *p; ++p)
 508     if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
 509       *p = '_';
 510
 511   fd = new_tmp_file (&oname);
 512   if (fd == -1)
 513     return FALSE;
 514   close (fd);
 515
 516   for (search = (lang_input_statement_type *) input_file_chain.head;
 517        search != NULL;
 518        search = (lang_input_statement_type *) search->next_real_file)
 519     if (search->filename != NULL)
 520       {
 521         const char *infile = base_name (search->filename);
 522
 523         if (strncmp (infile, "crtbegin", 8) == 0)
 524           {
 525             if (infile[8] == 'S')
 526               flags = concat (flags, " -fPIC", (const char *) NULL);
 527             else if (infile[8] == 'T')
 528               flags = concat (flags, " -fpie", (const char *) NULL);
 529             break;
 530           }
 531       }
 532
 533   cmd[0] = EMBEDSPU;
 534   cmd[1] = flags;
 535   cmd[2] = handle;
 536   cmd[3] = entry->the_bfd->filename;
 537   cmd[4] = oname;
 538   cmd[5] = NULL;
 539   if (verbose)
 540     {
 541       info_msg (_("running: %s \"%s\" \"%s\" \"%s\" \"%s\"\n"),
 542                 cmd[0], cmd[1], cmd[2], cmd[3], cmd[4]);
 543       fflush (stdout);
 544     }
 545
 546   pex_return = pex_one (PEX_SEARCH | PEX_LAST, cmd[0], (char *const *) cmd,
 547                         cmd[0], NULL, NULL, &status, &errno);
 548   if (NULL != pex_return) {
 549       if (strcmp ("embedspu", EMBEDSPU) != 0)
 550         {
 551           cmd[0] = "embedspu";
 552           pex_return = pex_one (PEX_SEARCH | PEX_LAST, cmd[0], (char *const *) cmd,
 553                                 cmd[0], NULL, NULL, &status, &errno);
 554         }
 555       if (NULL != pex_return) {
 556         perror (pex_return);
 557         _exit (127);
 558       }
 559   }
 560   if (status)
 561     return FALSE;
 562
 563
 564   old_stat_tail = stat_ptr->tail;
 565   old_file_tail = input_file_chain.tail;
 566   if (lang_add_input_file (oname, lang_input_file_is_file_enum, NULL) == NULL)
 567     return FALSE;
 568
 569   /* lang_add_input_file puts the new list entry at the end of the statement
 570      and input file lists.  Move it to just after the current entry.  */
 571   new_ent = *old_stat_tail;
 572   *old_stat_tail = NULL;
 573   stat_ptr->tail = old_stat_tail;
 574   *old_file_tail = NULL;
 575   input_file_chain.tail = old_file_tail;
 576   new_ent->header.next = entry->header.next;
 577   entry->header.next = new_ent;
 578   new_ent->input_statement.next_real_file = entry->next_real_file;
 579   entry->next_real_file = new_ent;
 580
 581   /* Ensure bfd sections are excluded from the output.  */
 582   bfd_section_list_clear (entry->the_bfd);
 583   entry->flags.loaded = TRUE;
 584   return TRUE;
 585 }
 586
 587 EOF
 588 fi
 589
 590 # Define some shell vars to insert bits of code into the standard elf
 591 # parse_args and list_options functions.
 592 #
 593 PARSE_AND_LIST_PROLOGUE='
 594 #define OPTION_SPU_PLUGIN               301
 595 #define OPTION_SPU_NO_OVERLAYS          (OPTION_SPU_PLUGIN + 1)
 596 #define OPTION_SPU_COMPACT_STUBS        (OPTION_SPU_NO_OVERLAYS + 1)
 597 #define OPTION_SPU_STUB_SYMS            (OPTION_SPU_COMPACT_STUBS + 1)
 598 #define OPTION_SPU_NON_OVERLAY_STUBS    (OPTION_SPU_STUB_SYMS + 1)
 599 #define OPTION_SPU_LOCAL_STORE          (OPTION_SPU_NON_OVERLAY_STUBS + 1)
 600 #define OPTION_SPU_STACK_ANALYSIS       (OPTION_SPU_LOCAL_STORE + 1)
 601 #define OPTION_SPU_STACK_SYMS           (OPTION_SPU_STACK_ANALYSIS + 1)
 602 #define OPTION_SPU_AUTO_OVERLAY         (OPTION_SPU_STACK_SYMS + 1)
 603 #define OPTION_SPU_AUTO_RELINK          (OPTION_SPU_AUTO_OVERLAY + 1)
 604 #define OPTION_SPU_OVERLAY_RODATA       (OPTION_SPU_AUTO_RELINK + 1)
 605 #define OPTION_SPU_SOFT_ICACHE          (OPTION_SPU_OVERLAY_RODATA + 1)
 606 #define OPTION_SPU_LINE_SIZE            (OPTION_SPU_SOFT_ICACHE + 1)
 607 #define OPTION_SPU_NUM_LINES            (OPTION_SPU_LINE_SIZE + 1)
 608 #define OPTION_SPU_LRLIVE               (OPTION_SPU_NUM_LINES + 1)
 609 #define OPTION_SPU_NON_IA_TEXT          (OPTION_SPU_LRLIVE + 1)
 610 #define OPTION_SPU_FIXED_SPACE          (OPTION_SPU_NON_IA_TEXT + 1)
 611 #define OPTION_SPU_RESERVED_SPACE       (OPTION_SPU_FIXED_SPACE + 1)
 612 #define OPTION_SPU_EXTRA_STACK          (OPTION_SPU_RESERVED_SPACE + 1)
 613 #define OPTION_SPU_NO_AUTO_OVERLAY      (OPTION_SPU_EXTRA_STACK + 1)
 614 #define OPTION_SPU_EMIT_FIXUPS          (OPTION_SPU_NO_AUTO_OVERLAY + 1)
 615 '
 616
 617 PARSE_AND_LIST_LONGOPTS='
 618   { "plugin", no_argument, NULL, OPTION_SPU_PLUGIN },
 619   { "soft-icache", no_argument, NULL, OPTION_SPU_SOFT_ICACHE },
 620   { "lrlive-analysis", no_argument, NULL, OPTION_SPU_LRLIVE },
 621   { "num-lines", required_argument, NULL, OPTION_SPU_NUM_LINES },
 622   { "line-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 623   { "non-ia-text", no_argument, NULL, OPTION_SPU_NON_IA_TEXT },
 624   { "no-overlays", no_argument, NULL, OPTION_SPU_NO_OVERLAYS },
 625   { "compact-stubs", no_argument, NULL, OPTION_SPU_COMPACT_STUBS },
 626   { "emit-stub-syms", no_argument, NULL, OPTION_SPU_STUB_SYMS },
 627   { "extra-overlay-stubs", no_argument, NULL, OPTION_SPU_NON_OVERLAY_STUBS },
 628   { "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
 629   { "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
 630   { "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
 631   { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
 632   { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
 633   { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
 634   { "num-regions", required_argument, NULL, OPTION_SPU_NUM_LINES },
 635   { "region-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 636   { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
 637   { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
 638   { "extra-stack-space", required_argument, NULL, OPTION_SPU_EXTRA_STACK },
 639   { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
 640   { "emit-fixups", optional_argument, NULL, OPTION_SPU_EMIT_FIXUPS },
 641 '
 642
 643 PARSE_AND_LIST_OPTIONS='
 644   fprintf (file, _("\
 645   --plugin                    Make SPU plugin.\n\
 646   --no-overlays               No overlay handling.\n\
 647   --compact-stubs             Use smaller and possibly slower call stubs.\n\
 648   --emit-stub-syms            Add symbols on overlay call stubs.\n\
 649   --extra-overlay-stubs       Add stubs on all calls out of overlay regions.\n\
 650   --local-store=lo:hi         Valid address range.\n\
 651   --stack-analysis            Estimate maximum stack requirement.\n\
 652   --emit-stack-syms           Add sym giving stack needed for each func.\n\
 653   --auto-overlay [=filename]  Create an overlay script in filename if\n\
 654                               executable does not fit in local store.\n\
 655   --auto-relink               Rerun linker using auto-overlay script.\n\
 656   --overlay-rodata            Place read-only data with associated function\n\
 657                               code in overlays.\n\
 658   --num-regions               Number of overlay buffers (default 1).\n\
 659   --region-size               Size of overlay buffers (default 0, auto).\n\
 660   --fixed-space=bytes         Local store for non-overlay code and data.\n\
 661   --reserved-space=bytes      Local store for stack and heap.  If not specified\n\
 662                               ld will estimate stack size and assume no heap.\n\
 663   --extra-stack-space=bytes   Space for negative sp access (default 2000) if\n\
 664                               --reserved-space not given.\n\
 665   --soft-icache               Generate software icache overlays.\n\
 666   --num-lines                 Number of soft-icache lines (default 32).\n\
 667   --line-size                 Size of soft-icache lines (default 1k).\n\
 668   --non-ia-text               Allow non-icache code in icache lines.\n\
 669   --lrlive-analysis           Scan function prologue for lr liveness.\n"
 670                    ));
 671 '
 672
 673 PARSE_AND_LIST_ARGS_CASES='
 674     case OPTION_SPU_PLUGIN:
 675       spu_elf_plugin (1);
 676       break;
 677
 678     case OPTION_SPU_NO_OVERLAYS:
 679       no_overlays = 1;
 680       break;
 681
 682     case OPTION_SPU_COMPACT_STUBS:
 683       params.compact_stub = 1;
 684       break;
 685
 686     case OPTION_SPU_STUB_SYMS:
 687       params.emit_stub_syms = 1;
 688       break;
 689
 690     case OPTION_SPU_NON_OVERLAY_STUBS:
 691       params.non_overlay_stubs = 1;
 692       break;
 693
 694     case OPTION_SPU_LOCAL_STORE:
 695       {
 696         char *end;
 697         params.local_store_lo = strtoul (optarg, &end, 0);
 698         if (*end == '\'':'\'')
 699           {
 700             params.local_store_hi = strtoul (end + 1, &end, 0);
 701             if (*end == 0)
 702               break;
 703           }
 704         einfo (_("%P%F: invalid --local-store address range `%s'\''\n"), optarg);
 705       }
 706       break;
 707
 708     case OPTION_SPU_STACK_ANALYSIS:
 709       params.stack_analysis = 1;
 710       break;
 711
 712     case OPTION_SPU_STACK_SYMS:
 713       params.emit_stack_syms = 1;
 714       break;
 715
 716     case OPTION_SPU_AUTO_OVERLAY:
 717       params.auto_overlay |= 1;
 718       if (optarg != NULL)
 719         {
 720           auto_overlay_file = optarg;
 721           break;
 722         }
 723       /* Fall thru */
 724
 725     case OPTION_SPU_AUTO_RELINK:
 726       params.auto_overlay |= 2;
 727       break;
 728
 729     case OPTION_SPU_OVERLAY_RODATA:
 730       params.auto_overlay |= 4;
 731       break;
 732
 733     case OPTION_SPU_SOFT_ICACHE:
 734       params.ovly_flavour = ovly_soft_icache;
 735       /* Software i-cache stubs are always "compact".  */
 736       params.compact_stub = 1;
 737       if (!num_lines_set)
 738         params.num_lines = 32;
 739       else if ((params.num_lines & -params.num_lines) != params.num_lines)
 740         einfo (_("%P%F: invalid --num-lines/--num-regions `%u'\''\n"),
 741                params.num_lines);
 742       if (!line_size_set)
 743         params.line_size = 1024;
 744       else if ((params.line_size & -params.line_size) != params.line_size)
 745         einfo (_("%P%F: invalid --line-size/--region-size `%u'\''\n"),
 746                params.line_size);
 747       break;
 748
 749     case OPTION_SPU_LRLIVE:
 750       params.lrlive_analysis = 1;
 751       break;
 752
 753     case OPTION_SPU_NON_IA_TEXT:
 754       params.non_ia_text = 1;
 755       break;
 756
 757     case OPTION_SPU_NUM_LINES:
 758       {
 759         char *end;
 760         params.num_lines = strtoul (optarg, &end, 0);
 761         num_lines_set = 1;
 762         if (*end == 0
 763             && (params.ovly_flavour != ovly_soft_icache
 764                 || (params.num_lines & -params.num_lines) == params.num_lines))
 765           break;
 766         einfo (_("%P%F: invalid --num-lines/--num-regions `%s'\''\n"), optarg);
 767       }
 768       break;
 769
 770     case OPTION_SPU_LINE_SIZE:
 771       {
 772         char *end;
 773         params.line_size = strtoul (optarg, &end, 0);
 774         line_size_set = 1;
 775         if (*end == 0
 776             && (params.ovly_flavour != ovly_soft_icache
 777                 || (params.line_size & -params.line_size) == params.line_size))
 778           break;
 779         einfo (_("%P%F: invalid --line-size/--region-size `%s'\''\n"), optarg);
 780       }
 781       break;
 782
 783     case OPTION_SPU_FIXED_SPACE:
 784       {
 785         char *end;
 786         params.auto_overlay_fixed = strtoul (optarg, &end, 0);
 787         if (*end != 0)
 788           einfo (_("%P%F: invalid --fixed-space value `%s'\''\n"), optarg);
 789       }
 790       break;
 791
 792     case OPTION_SPU_RESERVED_SPACE:
 793       {
 794         char *end;
 795         params.auto_overlay_reserved = strtoul (optarg, &end, 0);
 796         if (*end != 0)
 797           einfo (_("%P%F: invalid --reserved-space value `%s'\''\n"), optarg);
 798       }
 799       break;
 800
 801     case OPTION_SPU_EXTRA_STACK:
 802       {
 803         char *end;
 804         params.extra_stack_space = strtol (optarg, &end, 0);
 805         if (*end != 0)
 806           einfo (_("%P%F: invalid --extra-stack-space value `%s'\''\n"), optarg);
 807       }
 808       break;
 809
 810     case OPTION_SPU_NO_AUTO_OVERLAY:
 811       params.auto_overlay = 0;
 812       if (optarg != NULL)
 813         {
 814           struct tflist *tf;
 815           size_t len;
 816
 817           if (tmp_file_list == NULL)
 818             atexit (clean_tmp);
 819
 820           len = strlen (optarg) + 1;
 821           tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
 822           memcpy (tf->name, optarg, len);
 823           tf->next = tmp_file_list;
 824           tmp_file_list = tf;
 825           break;
 826         }
 827       break;
 828
 829     case OPTION_SPU_EMIT_FIXUPS:
 830       params.emit_fixups = 1;
 831       break;
 832 '
 833
 834 LDEMUL_AFTER_OPEN=spu_after_open
 835 LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
 836 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
 837 LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target