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