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,
  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
 313       /* We must not cache anything from the preliminary sizing.  */
 314       lang_reset_memory_regions ();
 315     }
 316
 317   gld${EMULATION_NAME}_before_allocation ();
 318 }
 319
 320 struct tflist {
 321   struct tflist *next;
 322   char name[9];
 323 };
 324
 325 static struct tflist *tmp_file_list;
 326
 327 static void clean_tmp (void)
 328 {
 329   for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
 330     unlink (tmp_file_list->name);
 331 }
 332
 333 static int
 334 new_tmp_file (char **fname)
 335 {
 336   struct tflist *tf;
 337   int fd;
 338
 339   if (tmp_file_list == NULL)
 340     atexit (clean_tmp);
 341   tf = xmalloc (sizeof (*tf));
 342   tf->next = tmp_file_list;
 343   tmp_file_list = tf;
 344   memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
 345   *fname = tf->name;
 346 #ifdef HAVE_MKSTEMP
 347   fd = mkstemp (*fname);
 348 #else
 349   *fname = mktemp (*fname);
 350   if (*fname == NULL)
 351     return -1;
 352   fd = open (fname, O_RDWR | O_CREAT | O_EXCL, 0600);
 353 #endif
 354   return fd;
 355 }
 356
 357 static FILE *
 358 spu_elf_open_overlay_script (void)
 359 {
 360   FILE *script = NULL;
 361
 362   if (auto_overlay_file == NULL)
 363     {
 364       int fd = new_tmp_file (&auto_overlay_file);
 365       if (fd == -1)
 366         goto file_err;
 367       script = fdopen (fd, "w");
 368     }
 369   else
 370     script = fopen (auto_overlay_file, "w");
 371
 372   if (script == NULL)
 373     {
 374     file_err:
 375       einfo ("%F%P: can not open script: %E\n");
 376     }
 377   return script;
 378 }
 379
 380 static void
 381 spu_elf_relink (void)
 382 {
 383   char **argv = xmalloc ((my_argc + 4) * sizeof (*argv));
 384
 385   memcpy (argv, my_argv, my_argc * sizeof (*argv));
 386   argv[my_argc++] = "--no-auto-overlay";
 387   if (tmp_file_list->name == auto_overlay_file)
 388     argv[my_argc - 1] = concat (argv[my_argc - 1], "=",
 389                                 auto_overlay_file, (const char *) NULL);
 390   argv[my_argc++] = "-T";
 391   argv[my_argc++] = auto_overlay_file;
 392   argv[my_argc] = 0;
 393   execvp (argv[0], (char *const *) argv);
 394   perror (argv[0]);
 395   _exit (127);
 396 }
 397
 398 /* Final emulation specific call.  */
 399
 400 static void
 401 gld${EMULATION_NAME}_finish (void)
 402 {
 403   int need_laying_out;
 404
 405   need_laying_out = bfd_elf_discard_info (link_info.output_bfd, &link_info);
 406
 407   gld${EMULATION_NAME}_map_segments (need_laying_out);
 408
 409   if (is_spu_target ())
 410     {
 411       if (params.local_store_lo < params.local_store_hi)
 412         {
 413           asection *s;
 414
 415           s = spu_elf_check_vma (&link_info);
 416           if (s != NULL && !params.auto_overlay)
 417             einfo ("%X%P: %A exceeds local store range\n", s);
 418         }
 419       else if (params.auto_overlay)
 420         einfo ("%P: --auto-overlay ignored with zero local store range\n");
 421     }
 422
 423   finish_default ();
 424 }
 425
 426 static char *
 427 gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
 428 {
 429   my_argc = argc;
 430   my_argv = argv;
 431   return ldemul_default_target (argc, argv);
 432 }
 433
 434 EOF
 435
 436 if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
 437   fragment <<EOF
 438 #include "filenames.h"
 439 #include <fcntl.h>
 440 #include <sys/wait.h>
 441
 442 static const char *
 443 base_name (const char *path)
 444 {
 445   const char *file = strrchr (path, '/');
 446 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 447   {
 448     char *bslash = strrchr (path, '\\\\');
 449
 450     if (file == NULL || (bslash != NULL && bslash > file))
 451       file = bslash;
 452     if (file == NULL
 453         && path[0] != '\0'
 454         && path[1] == ':')
 455       file = path + 1;
 456   }
 457 #endif
 458   if (file == NULL)
 459     file = path;
 460   else
 461     ++file;
 462   return file;
 463 }
 464
 465 /* This function is called when building a ppc32 or ppc64 executable
 466    to handle embedded spu images.  */
 467 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 468
 469 bfd_boolean
 470 embedded_spu_file (lang_input_statement_type *entry, const char *flags)
 471 {
 472   const char *cmd[6];
 473   const char *sym;
 474   char *handle, *p;
 475   char *oname;
 476   int fd;
 477   pid_t pid;
 478   int status;
 479   union lang_statement_union **old_stat_tail;
 480   union lang_statement_union **old_file_tail;
 481   union lang_statement_union *new_ent;
 482   lang_input_statement_type *search;
 483
 484   if (entry->the_bfd->format != bfd_object
 485       || strcmp (entry->the_bfd->xvec->name, "elf32-spu") != 0
 486       || (entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_EXEC
 487           && entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_DYN))
 488     return FALSE;
 489
 490   /* Use the filename as the symbol marking the program handle struct.  */
 491   sym = base_name (entry->the_bfd->filename);
 492
 493   handle = xstrdup (sym);
 494   for (p = handle; *p; ++p)
 495     if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
 496       *p = '_';
 497
 498   fd = new_tmp_file (&oname);
 499   if (fd == -1)
 500     return FALSE;
 501   close (fd);
 502
 503   for (search = (lang_input_statement_type *) input_file_chain.head;
 504        search != NULL;
 505        search = (lang_input_statement_type *) search->next_real_file)
 506     if (search->filename != NULL)
 507       {
 508         const char *infile = base_name (search->filename);
 509
 510         if (strncmp (infile, "crtbegin", 8) == 0)
 511           {
 512             if (infile[8] == 'S')
 513               flags = concat (flags, " -fPIC", (const char *) NULL);
 514             else if (infile[8] == 'T')
 515               flags = concat (flags, " -fpie", (const char *) NULL);
 516             break;
 517           }
 518       }
 519
 520   /* Use fork() and exec() rather than system() so that we don't
 521      need to worry about quoting args.  */
 522   cmd[0] = EMBEDSPU;
 523   cmd[1] = flags;
 524   cmd[2] = handle;
 525   cmd[3] = entry->the_bfd->filename;
 526   cmd[4] = oname;
 527   cmd[5] = NULL;
 528   if (trace_file_tries)
 529     {
 530       info_msg (_("running: %s \"%s\" \"%s\" \"%s\" \"%s\"\n"),
 531                 cmd[0], cmd[1], cmd[2], cmd[3], cmd[4]);
 532       fflush (stdout);
 533     }
 534
 535   pid = fork ();
 536   if (pid == -1)
 537     return FALSE;
 538   if (pid == 0)
 539     {
 540       execvp (cmd[0], (char *const *) cmd);
 541       if (strcmp ("embedspu", EMBEDSPU) != 0)
 542         {
 543           cmd[0] = "embedspu";
 544           execvp (cmd[0], (char *const *) cmd);
 545         }
 546       perror (cmd[0]);
 547       _exit (127);
 548     }
 549 #ifdef HAVE_WAITPID
 550 #define WAITFOR(PID, STAT) waitpid (PID, STAT, 0)
 551 #else
 552 #define WAITFOR(PID, STAT) wait (STAT)
 553 #endif
 554   if (WAITFOR (pid, &status) != pid
 555       || !WIFEXITED (status)
 556       || WEXITSTATUS (status) != 0)
 557     return FALSE;
 558 #undef WAITFOR
 559
 560   old_stat_tail = stat_ptr->tail;
 561   old_file_tail = input_file_chain.tail;
 562   if (lang_add_input_file (oname, lang_input_file_is_file_enum, NULL) == NULL)
 563     return FALSE;
 564
 565   /* lang_add_input_file puts the new list entry at the end of the statement
 566      and input file lists.  Move it to just after the current entry.  */
 567   new_ent = *old_stat_tail;
 568   *old_stat_tail = NULL;
 569   stat_ptr->tail = old_stat_tail;
 570   *old_file_tail = NULL;
 571   input_file_chain.tail = old_file_tail;
 572   new_ent->header.next = entry->header.next;
 573   entry->header.next = new_ent;
 574   new_ent->input_statement.next_real_file = entry->next_real_file;
 575   entry->next_real_file = new_ent;
 576
 577   /* Ensure bfd sections are excluded from the output.  */
 578   bfd_section_list_clear (entry->the_bfd);
 579   entry->loaded = TRUE;
 580   return TRUE;
 581 }
 582
 583 EOF
 584 fi
 585
 586 # Define some shell vars to insert bits of code into the standard elf
 587 # parse_args and list_options functions.
 588 #
 589 PARSE_AND_LIST_PROLOGUE='
 590 #define OPTION_SPU_PLUGIN               301
 591 #define OPTION_SPU_NO_OVERLAYS          (OPTION_SPU_PLUGIN + 1)
 592 #define OPTION_SPU_COMPACT_STUBS        (OPTION_SPU_NO_OVERLAYS + 1)
 593 #define OPTION_SPU_STUB_SYMS            (OPTION_SPU_COMPACT_STUBS + 1)
 594 #define OPTION_SPU_NON_OVERLAY_STUBS    (OPTION_SPU_STUB_SYMS + 1)
 595 #define OPTION_SPU_LOCAL_STORE          (OPTION_SPU_NON_OVERLAY_STUBS + 1)
 596 #define OPTION_SPU_STACK_ANALYSIS       (OPTION_SPU_LOCAL_STORE + 1)
 597 #define OPTION_SPU_STACK_SYMS           (OPTION_SPU_STACK_ANALYSIS + 1)
 598 #define OPTION_SPU_AUTO_OVERLAY         (OPTION_SPU_STACK_SYMS + 1)
 599 #define OPTION_SPU_AUTO_RELINK          (OPTION_SPU_AUTO_OVERLAY + 1)
 600 #define OPTION_SPU_OVERLAY_RODATA       (OPTION_SPU_AUTO_RELINK + 1)
 601 #define OPTION_SPU_SOFT_ICACHE          (OPTION_SPU_OVERLAY_RODATA + 1)
 602 #define OPTION_SPU_LINE_SIZE            (OPTION_SPU_SOFT_ICACHE + 1)
 603 #define OPTION_SPU_NUM_LINES            (OPTION_SPU_LINE_SIZE + 1)
 604 #define OPTION_SPU_LRLIVE               (OPTION_SPU_NUM_LINES + 1)
 605 #define OPTION_SPU_NON_IA_TEXT          (OPTION_SPU_LRLIVE + 1)
 606 #define OPTION_SPU_FIXED_SPACE          (OPTION_SPU_NON_IA_TEXT + 1)
 607 #define OPTION_SPU_RESERVED_SPACE       (OPTION_SPU_FIXED_SPACE + 1)
 608 #define OPTION_SPU_EXTRA_STACK          (OPTION_SPU_RESERVED_SPACE + 1)
 609 #define OPTION_SPU_NO_AUTO_OVERLAY      (OPTION_SPU_EXTRA_STACK + 1)
 610 '
 611
 612 PARSE_AND_LIST_LONGOPTS='
 613   { "plugin", no_argument, NULL, OPTION_SPU_PLUGIN },
 614   { "soft-icache", no_argument, NULL, OPTION_SPU_SOFT_ICACHE },
 615   { "lrlive-analysis", no_argument, NULL, OPTION_SPU_LRLIVE },
 616   { "num-lines", required_argument, NULL, OPTION_SPU_NUM_LINES },
 617   { "line-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 618   { "non-ia-text", no_argument, NULL, OPTION_SPU_NON_IA_TEXT },
 619   { "no-overlays", no_argument, NULL, OPTION_SPU_NO_OVERLAYS },
 620   { "compact-stubs", no_argument, NULL, OPTION_SPU_COMPACT_STUBS },
 621   { "emit-stub-syms", no_argument, NULL, OPTION_SPU_STUB_SYMS },
 622   { "extra-overlay-stubs", no_argument, NULL, OPTION_SPU_NON_OVERLAY_STUBS },
 623   { "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
 624   { "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
 625   { "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
 626   { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
 627   { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
 628   { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
 629   { "num-regions", required_argument, NULL, OPTION_SPU_NUM_LINES },
 630   { "region-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 631   { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
 632   { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
 633   { "extra-stack-space", required_argument, NULL, OPTION_SPU_EXTRA_STACK },
 634   { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
 635 '
 636
 637 PARSE_AND_LIST_OPTIONS='
 638   fprintf (file, _("\
 639   --plugin                    Make SPU plugin.\n\
 640   --no-overlays               No overlay handling.\n\
 641   --compact-stubs             Use smaller and possibly slower call stubs.\n\
 642   --emit-stub-syms            Add symbols on overlay call stubs.\n\
 643   --extra-overlay-stubs       Add stubs on all calls out of overlay regions.\n\
 644   --local-store=lo:hi         Valid address range.\n\
 645   --stack-analysis            Estimate maximum stack requirement.\n\
 646   --emit-stack-syms           Add sym giving stack needed for each func.\n\
 647   --auto-overlay [=filename]  Create an overlay script in filename if\n\
 648                               executable does not fit in local store.\n\
 649   --auto-relink               Rerun linker using auto-overlay script.\n\
 650   --overlay-rodata            Place read-only data with associated function\n\
 651                               code in overlays.\n\
 652   --num-regions               Number of overlay buffers (default 1).\n\
 653   --region-size               Size of overlay buffers (default 0, auto).\n\
 654   --fixed-space=bytes         Local store for non-overlay code and data.\n\
 655   --reserved-space=bytes      Local store for stack and heap.  If not specified\n\
 656                               ld will estimate stack size and assume no heap.\n\
 657   --extra-stack-space=bytes   Space for negative sp access (default 2000) if\n\
 658                               --reserved-space not given.\n\
 659   --soft-icache               Generate software icache overlays.\n\
 660   --num-lines                 Number of soft-icache lines (default 32).\n\
 661   --line-size                 Size of soft-icache lines (default 1k).\n\
 662   --non-ia-text               Allow non-icache code in icache lines.\n\
 663   --lrlive-analysis           Scan function prologue for lr liveness.\n"
 664                    ));
 665 '
 666
 667 PARSE_AND_LIST_ARGS_CASES='
 668     case OPTION_SPU_PLUGIN:
 669       spu_elf_plugin (1);
 670       break;
 671
 672     case OPTION_SPU_NO_OVERLAYS:
 673       no_overlays = 1;
 674       break;
 675
 676     case OPTION_SPU_COMPACT_STUBS:
 677       params.compact_stub = 1;
 678       break;
 679
 680     case OPTION_SPU_STUB_SYMS:
 681       params.emit_stub_syms = 1;
 682       break;
 683
 684     case OPTION_SPU_NON_OVERLAY_STUBS:
 685       params.non_overlay_stubs = 1;
 686       break;
 687
 688     case OPTION_SPU_LOCAL_STORE:
 689       {
 690         char *end;
 691         params.local_store_lo = strtoul (optarg, &end, 0);
 692         if (*end == '\'':'\'')
 693           {
 694             params.local_store_hi = strtoul (end + 1, &end, 0);
 695             if (*end == 0)
 696               break;
 697           }
 698         einfo (_("%P%F: invalid --local-store address range `%s'\''\n"), optarg);
 699       }
 700       break;
 701
 702     case OPTION_SPU_STACK_ANALYSIS:
 703       params.stack_analysis = 1;
 704       break;
 705
 706     case OPTION_SPU_STACK_SYMS:
 707       params.emit_stack_syms = 1;
 708       break;
 709
 710     case OPTION_SPU_AUTO_OVERLAY:
 711       params.auto_overlay |= 1;
 712       if (optarg != NULL)
 713         {
 714           auto_overlay_file = optarg;
 715           break;
 716         }
 717       /* Fall thru */
 718
 719     case OPTION_SPU_AUTO_RELINK:
 720       params.auto_overlay |= 2;
 721       break;
 722
 723     case OPTION_SPU_OVERLAY_RODATA:
 724       params.auto_overlay |= 4;
 725       break;
 726
 727     case OPTION_SPU_SOFT_ICACHE:
 728       params.ovly_flavour = ovly_soft_icache;
 729       if (!num_lines_set)
 730         params.num_lines = 32;
 731       else if ((params.num_lines & -params.num_lines) != params.num_lines)
 732         einfo (_("%P%F: invalid --num-lines/--num-regions `%u'\''\n"),
 733                params.num_lines);
 734       if (!line_size_set)
 735         params.line_size = 1024;
 736       else if ((params.line_size & -params.line_size) != params.line_size)
 737         einfo (_("%P%F: invalid --line-size/--region-size `%u'\''\n"),
 738                params.line_size);
 739       break;
 740
 741     case OPTION_SPU_LRLIVE:
 742       params.lrlive_analysis = 1;
 743       break;
 744
 745     case OPTION_SPU_NON_IA_TEXT:
 746       params.non_ia_text = 1;
 747       break;
 748
 749     case OPTION_SPU_NUM_LINES:
 750       {
 751         char *end;
 752         params.num_lines = strtoul (optarg, &end, 0);
 753         num_lines_set = 1;
 754         if (*end == 0
 755             && (params.ovly_flavour != ovly_soft_icache
 756                 || (params.num_lines & -params.num_lines) == params.num_lines))
 757           break;
 758         einfo (_("%P%F: invalid --num-lines/--num-regions `%s'\''\n"), optarg);
 759       }
 760       break;
 761
 762     case OPTION_SPU_LINE_SIZE:
 763       {
 764         char *end;
 765         params.line_size = strtoul (optarg, &end, 0);
 766         line_size_set = 1;
 767         if (*end == 0
 768             && (params.ovly_flavour != ovly_soft_icache
 769                 || (params.line_size & -params.line_size) == params.line_size))
 770           break;
 771         einfo (_("%P%F: invalid --line-size/--region-size `%s'\''\n"), optarg);
 772       }
 773       break;
 774
 775     case OPTION_SPU_FIXED_SPACE:
 776       {
 777         char *end;
 778         params.auto_overlay_fixed = strtoul (optarg, &end, 0);
 779         if (*end != 0)
 780           einfo (_("%P%F: invalid --fixed-space value `%s'\''\n"), optarg);
 781       }
 782       break;
 783
 784     case OPTION_SPU_RESERVED_SPACE:
 785       {
 786         char *end;
 787         params.auto_overlay_reserved = strtoul (optarg, &end, 0);
 788         if (*end != 0)
 789           einfo (_("%P%F: invalid --reserved-space value `%s'\''\n"), optarg);
 790       }
 791       break;
 792
 793     case OPTION_SPU_EXTRA_STACK:
 794       {
 795         char *end;
 796         params.extra_stack_space = strtol (optarg, &end, 0);
 797         if (*end != 0)
 798           einfo (_("%P%F: invalid --extra-stack-space value `%s'\''\n"), optarg);
 799       }
 800       break;
 801
 802     case OPTION_SPU_NO_AUTO_OVERLAY:
 803       params.auto_overlay = 0;
 804       if (optarg != NULL)
 805         {
 806           struct tflist *tf;
 807           size_t len;
 808
 809           if (tmp_file_list == NULL)
 810             atexit (clean_tmp);
 811
 812           len = strlen (optarg) + 1;
 813           tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
 814           memcpy (tf->name, optarg, len);
 815           tf->next = tmp_file_list;
 816           tmp_file_list = tf;
 817           break;
 818         }
 819       break;
 820 '
 821
 822 LDEMUL_AFTER_OPEN=spu_after_open
 823 LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
 824 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
 825 LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target