ld/emultempl/spuelf.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright (C) 2006-2021 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 elf.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 ${srcdir}/emultempl/spu_icache.o_c"
  71   echo >&2 "You must build gas/as-new with --target=spu"
  72   exit 1
  73 fi
  74
  75 fragment <<EOF
  76 };
  77
  78 static const struct _ovl_stream ovl_mgr_stream = {
  79   ovl_mgr,
  80   ovl_mgr + sizeof (ovl_mgr)
  81 };
  82
  83 static const struct _ovl_stream icache_mgr_stream = {
  84   icache_mgr,
  85   icache_mgr + sizeof (icache_mgr)
  86 };
  87
  88
  89 static int
  90 is_spu_target (void)
  91 {
  92   extern const bfd_target spu_elf32_vec;
  93
  94   return link_info.output_bfd->xvec == &spu_elf32_vec;
  95 }
  96
  97 /* Create our note section.  */
  98
  99 static void
 100 spu_after_open (void)
 101 {
 102   if (is_spu_target ())
 103     {
 104       /* Pass params to backend.  */
 105       if ((params.auto_overlay & AUTO_OVERLAY) == 0)
 106         params.auto_overlay = 0;
 107       params.emit_stub_syms |= link_info.emitrelocations;
 108       spu_elf_setup (&link_info, &params);
 109
 110       if (bfd_link_relocatable (&link_info))
 111         lang_add_unique (".text.ia.*");
 112
 113       if (!bfd_link_relocatable (&link_info)
 114           && link_info.input_bfds != NULL
 115           && !spu_elf_create_sections (&link_info))
 116         einfo (_("%X%P: can not create note section: %E\n"));
 117     }
 118
 119   gld${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     os = lang_output_section_get (o);
 141   else
 142     os = lang_output_section_find (output_name);
 143   if (os == NULL)
 144     {
 145       os = ldelf_place_orphan (s, output_name, 0);
 146       os->addr_tree = NULL;
 147     }
 148   else if (params.ovly_flavour != ovly_soft_icache
 149            && o != NULL && os->children.head != NULL)
 150     {
 151       lang_statement_list_type add;
 152
 153       lang_list_init (&add);
 154       lang_add_section (&add, s, NULL, os);
 155       *add.tail = os->children.head;
 156       os->children.head = add.head;
 157     }
 158   else
 159     {
 160       if (params.ovly_flavour == ovly_soft_icache && o != NULL)
 161         {
 162           /* Pad this stub section so that it finishes at the
 163              end of the icache line.  */
 164           etree_type *e_size;
 165
 166           push_stat_ptr (&os->children);
 167           e_size = exp_intop (params.line_size - s->size);
 168           lang_add_assignment (exp_assign (".", e_size, FALSE));
 169           pop_stat_ptr ();
 170         }
 171       lang_add_section (&os->children, s, NULL, os);
 172     }
 173
 174   s->output_section->size += s->size;
 175 }
 176
 177 /* Load built-in overlay manager.  */
 178
 179 static bfd_size_type
 180 spu_elf_load_ovl_mgr (void)
 181 {
 182   struct elf_link_hash_entry *h;
 183   const char *ovly_mgr_entry;
 184   const struct _ovl_stream *mgr_stream;
 185   bfd_size_type total = 0;
 186
 187   ovly_mgr_entry = "__ovly_load";
 188   mgr_stream = &ovl_mgr_stream;
 189   if (params.ovly_flavour == ovly_soft_icache)
 190     {
 191       ovly_mgr_entry = "__icache_br_handler";
 192       mgr_stream = &icache_mgr_stream;
 193     }
 194   h = elf_link_hash_lookup (elf_hash_table (&link_info),
 195                             ovly_mgr_entry, FALSE, FALSE, FALSE);
 196
 197   if (h != NULL
 198       && (h->root.type == bfd_link_hash_defined
 199           || h->root.type == bfd_link_hash_defweak)
 200       && h->def_regular)
 201     {
 202       /* User supplied __ovly_load.  */
 203     }
 204   else if (mgr_stream->start == mgr_stream->end)
 205     einfo (_("%F%P: no built-in overlay manager\n"));
 206   else
 207     {
 208       lang_input_statement_type *ovl_is;
 209
 210       ovl_is = lang_add_input_file ("builtin ovl_mgr",
 211                                     lang_input_file_is_file_enum,
 212                                     NULL);
 213
 214       if (!spu_elf_open_builtin_lib (&ovl_is->the_bfd, mgr_stream))
 215         einfo (_("%X%P: can not open built-in overlay manager: %E\n"));
 216       else
 217         {
 218           asection *in;
 219
 220           if (!load_symbols (ovl_is, NULL))
 221             einfo (_("%X%P: can not load built-in overlay manager: %E\n"));
 222
 223           /* Map overlay manager sections to output sections.
 224              First try for a matching output section name, if that
 225              fails then try mapping .abc.xyz to .abc, otherwise map
 226              to .text.  */
 227           for (in = ovl_is->the_bfd->sections; in != NULL; in = in->next)
 228             if ((in->flags & (SEC_ALLOC | SEC_LOAD))
 229                 == (SEC_ALLOC | SEC_LOAD))
 230               {
 231                 const char *oname = in->name;
 232                 if (strncmp (in->name, ".ovl.init", 9) != 0)
 233                   {
 234                     total += in->size;
 235                     if (!lang_output_section_find (oname))
 236                       {
 237                         lang_output_section_statement_type *os = NULL;
 238                         char *p = strchr (oname + 1, '.');
 239                         if (p != NULL)
 240                           {
 241                             size_t len = p - oname;
 242                             p = memcpy (xmalloc (len + 1), oname, len);
 243                             p[len] = '\0';
 244                             os = lang_output_section_find (p);
 245                             free (p);
 246                           }
 247                         if (os != NULL)
 248                           oname = os->name;
 249                         else
 250                           oname = ".text";
 251                       }
 252                   }
 253
 254                 spu_place_special_section (in, NULL, oname);
 255               }
 256         }
 257     }
 258   return total;
 259 }
 260
 261 /* Go find if we need to do anything special for overlays.  */
 262
 263 static void
 264 spu_before_allocation (void)
 265 {
 266   if (is_spu_target ()
 267       && !bfd_link_relocatable (&link_info)
 268       && !no_overlays)
 269     {
 270       int ret;
 271
 272       /* Size the sections.  This is premature, but we need to know the
 273          rough layout so that overlays can be found.  */
 274       expld.phase = lang_mark_phase_enum;
 275       expld.dataseg.phase = exp_seg_none;
 276       one_lang_size_sections_pass (NULL, TRUE);
 277
 278       /* Find overlays by inspecting section vmas.  */
 279       ret = spu_elf_find_overlays (&link_info);
 280       if (ret == 0)
 281         einfo (_("%X%P: can not find overlays: %E\n"));
 282       else if (ret == 2)
 283         {
 284           lang_output_section_statement_type *os;
 285
 286           if (params.auto_overlay != 0)
 287             {
 288               einfo (_("%P: --auto-overlay ignored with user overlay script\n"));
 289               params.auto_overlay = 0;
 290             }
 291
 292           /* Ensure alignment of overlay sections is sufficient.  */
 293           for (os = (void *) lang_os_list.head;
 294                os != NULL;
 295                os = os->next)
 296             if (os->bfd_section != NULL
 297                 && spu_elf_section_data (os->bfd_section) != NULL
 298                 && spu_elf_section_data (os->bfd_section)->u.o.ovl_index != 0)
 299               {
 300                 if (os->bfd_section->alignment_power < 4)
 301                   os->bfd_section->alignment_power = 4;
 302
 303                 /* Also ensure size rounds up.  */
 304                 os->block_value = 16;
 305               }
 306
 307           ret = spu_elf_size_stubs (&link_info);
 308           if (ret == 0)
 309             einfo (_("%X%P: can not size overlay stubs: %E\n"));
 310           else if (ret == 2)
 311             spu_elf_load_ovl_mgr ();
 312
 313           spu_elf_place_overlay_data (&link_info);
 314         }
 315
 316       /* We must not cache anything from the preliminary sizing.  */
 317       lang_reset_memory_regions ();
 318     }
 319
 320   if (is_spu_target ()
 321       && !bfd_link_relocatable (&link_info))
 322     spu_elf_size_sections (link_info.output_bfd, &link_info);
 323
 324   gld${EMULATION_NAME}_before_allocation ();
 325 }
 326
 327 struct tflist {
 328   struct tflist *next;
 329   char name[9];
 330 };
 331
 332 static struct tflist *tmp_file_list;
 333
 334 static void clean_tmp (void)
 335 {
 336   for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
 337     unlink (tmp_file_list->name);
 338 }
 339
 340 static int
 341 new_tmp_file (char **fname)
 342 {
 343   struct tflist *tf;
 344   int fd;
 345
 346   if (tmp_file_list == NULL)
 347     atexit (clean_tmp);
 348   tf = xmalloc (sizeof (*tf));
 349   tf->next = tmp_file_list;
 350   tmp_file_list = tf;
 351   memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
 352   *fname = tf->name;
 353 #ifdef HAVE_MKSTEMP
 354   fd = mkstemp (*fname);
 355 #else
 356   *fname = mktemp (*fname);
 357   if (*fname == NULL)
 358     return -1;
 359   fd = open (*fname, O_RDWR | O_CREAT | O_EXCL, 0600);
 360 #endif
 361   return fd;
 362 }
 363
 364 static FILE *
 365 spu_elf_open_overlay_script (void)
 366 {
 367   FILE *script = NULL;
 368
 369   if (auto_overlay_file == NULL)
 370     {
 371       int fd = new_tmp_file (&auto_overlay_file);
 372       if (fd == -1)
 373         goto file_err;
 374       script = fdopen (fd, "w");
 375     }
 376   else
 377     script = fopen (auto_overlay_file, "w");
 378
 379   if (script == NULL)
 380     {
 381     file_err:
 382       einfo (_("%F%P: can not open script: %E\n"));
 383     }
 384   return script;
 385 }
 386
 387 #include <errno.h>
 388
 389 static void
 390 spu_elf_relink (void)
 391 {
 392   const char *pex_return;
 393   int status;
 394   char **argv = xmalloc ((my_argc + 4) * sizeof (*argv));
 395
 396   memcpy (argv, my_argv, my_argc * sizeof (*argv));
 397   argv[my_argc++] = "--no-auto-overlay";
 398   if (tmp_file_list != NULL && tmp_file_list->name == auto_overlay_file)
 399     argv[my_argc - 1] = concat (argv[my_argc - 1], "=",
 400                                 auto_overlay_file, (const char *) NULL);
 401   argv[my_argc++] = "-T";
 402   argv[my_argc++] = auto_overlay_file;
 403   argv[my_argc] = 0;
 404
 405   pex_return = pex_one (PEX_SEARCH | PEX_LAST, (const char *) argv[0],
 406                         (char * const *) argv, (const char *) argv[0],
 407                         NULL, NULL, & status, & errno);
 408   if (pex_return != NULL)
 409     {
 410       perror (pex_return);
 411       _exit (127);
 412     }
 413   exit (status);
 414 }
 415
 416 /* Final emulation specific call.  */
 417
 418 static void
 419 gld${EMULATION_NAME}_finish (void)
 420 {
 421   if (is_spu_target ())
 422     {
 423       if (params.local_store_lo < params.local_store_hi)
 424         {
 425           asection *s;
 426
 427           s = spu_elf_check_vma (&link_info);
 428           if (s != NULL && !params.auto_overlay)
 429             einfo (_("%X%P: %pA exceeds local store range\n"), s);
 430         }
 431       else if (params.auto_overlay)
 432         einfo (_("%P: --auto-overlay ignored with zero local store range\n"));
 433     }
 434
 435   finish_default ();
 436 }
 437
 438 static char *
 439 gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
 440 {
 441   my_argc = argc;
 442   my_argv = argv;
 443   return ldemul_default_target (argc, argv);
 444 }
 445
 446 EOF
 447
 448 if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
 449   fragment <<EOF
 450 #include "safe-ctype.h"
 451 #include "filenames.h"
 452 #include "libiberty.h"
 453
 454 static const char *
 455 base_name (const char *path)
 456 {
 457   const char *file = strrchr (path, '/');
 458 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 459   {
 460     char *bslash = strrchr (path, '\\\\');
 461
 462     if (file == NULL || (bslash != NULL && bslash > file))
 463       file = bslash;
 464     if (file == NULL
 465         && path[0] != '\0'
 466         && path[1] == ':')
 467       file = path + 1;
 468   }
 469 #endif
 470   if (file == NULL)
 471     file = path;
 472   else
 473     ++file;
 474   return file;
 475 }
 476
 477 /* This function is called when building a ppc32 or ppc64 executable
 478    to handle embedded spu images.  */
 479 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 480
 481 bfd_boolean
 482 embedded_spu_file (lang_input_statement_type *entry, const char *flags)
 483 {
 484   const char *cmd[6];
 485   const char *pex_return;
 486   const char *sym;
 487   char *handle, *p;
 488   char *oname;
 489   int fd;
 490   int status;
 491   union lang_statement_union **old_stat_tail;
 492   union lang_statement_union **old_file_tail;
 493   union lang_statement_union *new_ent;
 494   lang_input_statement_type *search;
 495
 496   if (entry->the_bfd->format != bfd_object
 497       || strcmp (entry->the_bfd->xvec->name, "elf32-spu") != 0
 498       || (entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_EXEC
 499           && entry->the_bfd->tdata.elf_obj_data->elf_header->e_type != ET_DYN))
 500     return FALSE;
 501
 502   /* Use the filename as the symbol marking the program handle struct.  */
 503   sym = base_name (bfd_get_filename (entry->the_bfd));
 504
 505   handle = xstrdup (sym);
 506   for (p = handle; *p; ++p)
 507     if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
 508       *p = '_';
 509
 510   fd = new_tmp_file (&oname);
 511   if (fd == -1)
 512     return FALSE;
 513   close (fd);
 514
 515   for (search = (void *) input_file_chain.head;
 516        search != NULL;
 517        search = search->next_real_file)
 518     if (search->filename != NULL)
 519       {
 520         const char *infile = base_name (search->filename);
 521
 522         if (strncmp (infile, "crtbegin", 8) == 0)
 523           {
 524             if (infile[8] == 'S')
 525               flags = concat (flags, " -fPIC", (const char *) NULL);
 526             else if (infile[8] == 'T')
 527               flags = concat (flags, " -fpie", (const char *) NULL);
 528             break;
 529           }
 530       }
 531
 532   cmd[0] = EMBEDSPU;
 533   cmd[1] = flags;
 534   cmd[2] = handle;
 535   cmd[3] = bfd_get_filename (entry->the_bfd);
 536   cmd[4] = oname;
 537   cmd[5] = NULL;
 538   if (verbose)
 539     {
 540       info_msg (_("running: %s \"%s\" \"%s\" \"%s\" \"%s\"\n"),
 541                 cmd[0], cmd[1], cmd[2], cmd[3], cmd[4]);
 542       fflush (stdout);
 543     }
 544
 545   pex_return = pex_one (PEX_SEARCH | PEX_LAST, cmd[0], (char *const *) cmd,
 546                         cmd[0], NULL, NULL, &status, &errno);
 547   if (NULL != pex_return) {
 548       if (strcmp ("embedspu", EMBEDSPU) != 0)
 549         {
 550           cmd[0] = "embedspu";
 551           pex_return = pex_one (PEX_SEARCH | PEX_LAST, cmd[0], (char *const *) cmd,
 552                                 cmd[0], NULL, NULL, &status, &errno);
 553         }
 554       if (NULL != pex_return) {
 555         perror (pex_return);
 556         _exit (127);
 557       }
 558   }
 559   if (status)
 560     return FALSE;
 561
 562
 563   old_stat_tail = stat_ptr->tail;
 564   old_file_tail = input_file_chain.tail;
 565   if (lang_add_input_file (oname, lang_input_file_is_file_enum, NULL) == NULL)
 566     return FALSE;
 567
 568   /* lang_add_input_file puts the new list entry at the end of the statement
 569      and input file lists.  Move it to just after the current entry.  */
 570   new_ent = *old_stat_tail;
 571   *old_stat_tail = NULL;
 572   stat_ptr->tail = old_stat_tail;
 573   *old_file_tail = NULL;
 574   input_file_chain.tail = old_file_tail;
 575   new_ent->header.next = entry->header.next;
 576   entry->header.next = new_ent;
 577   new_ent->input_statement.next_real_file = entry->next_real_file;
 578   entry->next_real_file = &new_ent->input_statement;
 579
 580   /* Ensure bfd sections are excluded from the output.  */
 581   bfd_section_list_clear (entry->the_bfd);
 582   entry->flags.loaded = TRUE;
 583   return TRUE;
 584 }
 585
 586 EOF
 587 fi
 588
 589 # Define some shell vars to insert bits of code into the standard elf
 590 # parse_args and list_options functions.
 591 #
 592 PARSE_AND_LIST_PROLOGUE='
 593 #define OPTION_SPU_PLUGIN               301
 594 #define OPTION_SPU_NO_OVERLAYS          (OPTION_SPU_PLUGIN + 1)
 595 #define OPTION_SPU_COMPACT_STUBS        (OPTION_SPU_NO_OVERLAYS + 1)
 596 #define OPTION_SPU_STUB_SYMS            (OPTION_SPU_COMPACT_STUBS + 1)
 597 #define OPTION_SPU_NON_OVERLAY_STUBS    (OPTION_SPU_STUB_SYMS + 1)
 598 #define OPTION_SPU_LOCAL_STORE          (OPTION_SPU_NON_OVERLAY_STUBS + 1)
 599 #define OPTION_SPU_STACK_ANALYSIS       (OPTION_SPU_LOCAL_STORE + 1)
 600 #define OPTION_SPU_STACK_SYMS           (OPTION_SPU_STACK_ANALYSIS + 1)
 601 #define OPTION_SPU_AUTO_OVERLAY         (OPTION_SPU_STACK_SYMS + 1)
 602 #define OPTION_SPU_AUTO_RELINK          (OPTION_SPU_AUTO_OVERLAY + 1)
 603 #define OPTION_SPU_OVERLAY_RODATA       (OPTION_SPU_AUTO_RELINK + 1)
 604 #define OPTION_SPU_SOFT_ICACHE          (OPTION_SPU_OVERLAY_RODATA + 1)
 605 #define OPTION_SPU_LINE_SIZE            (OPTION_SPU_SOFT_ICACHE + 1)
 606 #define OPTION_SPU_NUM_LINES            (OPTION_SPU_LINE_SIZE + 1)
 607 #define OPTION_SPU_LRLIVE               (OPTION_SPU_NUM_LINES + 1)
 608 #define OPTION_SPU_NON_IA_TEXT          (OPTION_SPU_LRLIVE + 1)
 609 #define OPTION_SPU_FIXED_SPACE          (OPTION_SPU_NON_IA_TEXT + 1)
 610 #define OPTION_SPU_RESERVED_SPACE       (OPTION_SPU_FIXED_SPACE + 1)
 611 #define OPTION_SPU_EXTRA_STACK          (OPTION_SPU_RESERVED_SPACE + 1)
 612 #define OPTION_SPU_NO_AUTO_OVERLAY      (OPTION_SPU_EXTRA_STACK + 1)
 613 #define OPTION_SPU_EMIT_FIXUPS          (OPTION_SPU_NO_AUTO_OVERLAY + 1)
 614 '
 615
 616 PARSE_AND_LIST_LONGOPTS='
 617   { "plugin", no_argument, NULL, OPTION_SPU_PLUGIN },
 618   { "soft-icache", no_argument, NULL, OPTION_SPU_SOFT_ICACHE },
 619   { "lrlive-analysis", no_argument, NULL, OPTION_SPU_LRLIVE },
 620   { "num-lines", required_argument, NULL, OPTION_SPU_NUM_LINES },
 621   { "line-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 622   { "non-ia-text", no_argument, NULL, OPTION_SPU_NON_IA_TEXT },
 623   { "no-overlays", no_argument, NULL, OPTION_SPU_NO_OVERLAYS },
 624   { "compact-stubs", no_argument, NULL, OPTION_SPU_COMPACT_STUBS },
 625   { "emit-stub-syms", no_argument, NULL, OPTION_SPU_STUB_SYMS },
 626   { "extra-overlay-stubs", no_argument, NULL, OPTION_SPU_NON_OVERLAY_STUBS },
 627   { "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
 628   { "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
 629   { "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
 630   { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
 631   { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
 632   { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
 633   { "num-regions", required_argument, NULL, OPTION_SPU_NUM_LINES },
 634   { "region-size", required_argument, NULL, OPTION_SPU_LINE_SIZE },
 635   { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
 636   { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
 637   { "extra-stack-space", required_argument, NULL, OPTION_SPU_EXTRA_STACK },
 638   { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
 639   { "emit-fixups", optional_argument, NULL, OPTION_SPU_EMIT_FIXUPS },
 640 '
 641
 642 PARSE_AND_LIST_OPTIONS='
 643   fprintf (file, _("\
 644   --plugin                    Make SPU plugin\n"));
 645   fprintf (file, _("\
 646   --no-overlays               No overlay handling\n"));
 647   fprintf (file, _("\
 648   --compact-stubs             Use smaller and possibly slower call stubs\n"));
 649   fprintf (file, _("\
 650   --emit-stub-syms            Add symbols on overlay call stubs\n"));
 651   fprintf (file, _("\
 652   --extra-overlay-stubs       Add stubs on all calls out of overlay regions\n"));
 653   fprintf (file, _("\
 654   --local-store=lo:hi         Valid address range\n"));
 655   fprintf (file, _("\
 656   --stack-analysis            Estimate maximum stack requirement\n"));
 657   fprintf (file, _("\
 658   --emit-stack-syms           Add sym giving stack needed for each func\n"));
 659   fprintf (file, _("\
 660   --auto-overlay [=filename]  Create an overlay script in filename if\n\
 661                                 executable does not fit in local store\n"));
 662   fprintf (file, _("\
 663   --auto-relink               Rerun linker using auto-overlay script\n"));
 664   fprintf (file, _("\
 665   --overlay-rodata            Place read-only data with associated function\n\
 666                                 code in overlays\n"));
 667   fprintf (file, _("\
 668   --num-regions               Number of overlay buffers (default 1)\n"));
 669   fprintf (file, _("\
 670   --region-size               Size of overlay buffers (default 0, auto)\n"));
 671   fprintf (file, _("\
 672   --fixed-space=bytes         Local store for non-overlay code and data\n"));
 673   fprintf (file, _("\
 674   --reserved-space=bytes      Local store for stack and heap.  If not specified\n\
 675                                 ld will estimate stack size and assume no heap\n"));
 676   fprintf (file, _("\
 677   --extra-stack-space=bytes   Space for negative sp access (default 2000) if\n\
 678                                 --reserved-space not given\n"));
 679   fprintf (file, _("\
 680   --soft-icache               Generate software icache overlays\n"));
 681   fprintf (file, _("\
 682   --num-lines                 Number of soft-icache lines (default 32)\n"));
 683   fprintf (file, _("\
 684   --line-size                 Size of soft-icache lines (default 1k)\n"));
 685   fprintf (file, _("\
 686   --non-ia-text               Allow non-icache code in icache lines\n"));
 687   fprintf (file, _("\
 688   --lrlive-analysis           Scan function prologue for lr liveness\n"));
 689 '
 690
 691 PARSE_AND_LIST_ARGS_CASES='
 692     case OPTION_SPU_PLUGIN:
 693       spu_elf_plugin (1);
 694       break;
 695
 696     case OPTION_SPU_NO_OVERLAYS:
 697       no_overlays = 1;
 698       break;
 699
 700     case OPTION_SPU_COMPACT_STUBS:
 701       params.compact_stub = 1;
 702       break;
 703
 704     case OPTION_SPU_STUB_SYMS:
 705       params.emit_stub_syms = 1;
 706       break;
 707
 708     case OPTION_SPU_NON_OVERLAY_STUBS:
 709       params.non_overlay_stubs = 1;
 710       break;
 711
 712     case OPTION_SPU_LOCAL_STORE:
 713       {
 714         char *end;
 715         params.local_store_lo = strtoul (optarg, &end, 0);
 716         if (*end == '\'':'\'')
 717           {
 718             params.local_store_hi = strtoul (end + 1, &end, 0);
 719             if (*end == 0)
 720               break;
 721           }
 722         einfo (_("%F%P: invalid --local-store address range `%s'\''\n"), optarg);
 723       }
 724       break;
 725
 726     case OPTION_SPU_STACK_ANALYSIS:
 727       params.stack_analysis = 1;
 728       break;
 729
 730     case OPTION_SPU_STACK_SYMS:
 731       params.emit_stack_syms = 1;
 732       break;
 733
 734     case OPTION_SPU_AUTO_OVERLAY:
 735       params.auto_overlay |= 1;
 736       if (optarg != NULL)
 737         {
 738           auto_overlay_file = optarg;
 739           break;
 740         }
 741       /* Fallthru */
 742
 743     case OPTION_SPU_AUTO_RELINK:
 744       params.auto_overlay |= 2;
 745       break;
 746
 747     case OPTION_SPU_OVERLAY_RODATA:
 748       params.auto_overlay |= 4;
 749       break;
 750
 751     case OPTION_SPU_SOFT_ICACHE:
 752       params.ovly_flavour = ovly_soft_icache;
 753       /* Software i-cache stubs are always "compact".  */
 754       params.compact_stub = 1;
 755       if (!num_lines_set)
 756         params.num_lines = 32;
 757       else if ((params.num_lines & -params.num_lines) != params.num_lines)
 758         einfo (_("%F%P: invalid --num-lines/--num-regions `%u'\''\n"),
 759                params.num_lines);
 760       if (!line_size_set)
 761         params.line_size = 1024;
 762       else if ((params.line_size & -params.line_size) != params.line_size)
 763         einfo (_("%F%P: invalid --line-size/--region-size `%u'\''\n"),
 764                params.line_size);
 765       break;
 766
 767     case OPTION_SPU_LRLIVE:
 768       params.lrlive_analysis = 1;
 769       break;
 770
 771     case OPTION_SPU_NON_IA_TEXT:
 772       params.non_ia_text = 1;
 773       break;
 774
 775     case OPTION_SPU_NUM_LINES:
 776       {
 777         char *end;
 778         params.num_lines = strtoul (optarg, &end, 0);
 779         num_lines_set = 1;
 780         if (*end == 0
 781             && (params.ovly_flavour != ovly_soft_icache
 782                 || (params.num_lines & -params.num_lines) == params.num_lines))
 783           break;
 784         einfo (_("%F%P: invalid --num-lines/--num-regions `%s'\''\n"), optarg);
 785       }
 786       break;
 787
 788     case OPTION_SPU_LINE_SIZE:
 789       {
 790         char *end;
 791         params.line_size = strtoul (optarg, &end, 0);
 792         line_size_set = 1;
 793         if (*end == 0
 794             && (params.ovly_flavour != ovly_soft_icache
 795                 || (params.line_size & -params.line_size) == params.line_size))
 796           break;
 797         einfo (_("%F%P: invalid --line-size/--region-size `%s'\''\n"), optarg);
 798       }
 799       break;
 800
 801     case OPTION_SPU_FIXED_SPACE:
 802       {
 803         char *end;
 804         params.auto_overlay_fixed = strtoul (optarg, &end, 0);
 805         if (*end != 0)
 806           einfo (_("%F%P: invalid --fixed-space value `%s'\''\n"), optarg);
 807       }
 808       break;
 809
 810     case OPTION_SPU_RESERVED_SPACE:
 811       {
 812         char *end;
 813         params.auto_overlay_reserved = strtoul (optarg, &end, 0);
 814         if (*end != 0)
 815           einfo (_("%F%P: invalid --reserved-space value `%s'\''\n"), optarg);
 816       }
 817       break;
 818
 819     case OPTION_SPU_EXTRA_STACK:
 820       {
 821         char *end;
 822         params.extra_stack_space = strtol (optarg, &end, 0);
 823         if (*end != 0)
 824           einfo (_("%F%P: invalid --extra-stack-space value `%s'\''\n"), optarg);
 825       }
 826       break;
 827
 828     case OPTION_SPU_NO_AUTO_OVERLAY:
 829       params.auto_overlay = 0;
 830       if (optarg != NULL)
 831         {
 832           struct tflist *tf;
 833           size_t len;
 834
 835           if (tmp_file_list == NULL)
 836             atexit (clean_tmp);
 837
 838           len = strlen (optarg) + 1;
 839           tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
 840           memcpy (tf->name, optarg, len);
 841           tf->next = tmp_file_list;
 842           tmp_file_list = tf;
 843           break;
 844         }
 845       break;
 846
 847     case OPTION_SPU_EMIT_FIXUPS:
 848       params.emit_fixups = 1;
 849       break;
 850 '
 851
 852 LDEMUL_AFTER_OPEN=spu_after_open
 853 LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
 854 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
 855 LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target