ld/emultempl/ppc32elf.em - third_party/binutils-gdb - Git at Google

 # This shell script emits a C file. -*- C -*-
 #   Copyright (C) 2003-2016 Free Software Foundation, Inc.
 #
 # This file is part of the GNU Binutils.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
 # MA 02110-1301, USA.
 #

 # This file is sourced from elf32.em, and defines extra powerpc32-elf
 # specific routines.
 #
 fragment <<EOF

 #include "libbfd.h"
 #include "elf32-ppc.h"
 #include "ldlex.h"
 #include "ldlang.h"

 #define is_ppc_elf(bfd) \
   (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
    && elf_object_id (bfd) == PPC32_ELF_DATA)

 /* Whether to run tls optimization.  */
 static int notlsopt = 0;

 /* Choose the correct place for .got.  */
 static int old_got = 0;

 static bfd_vma pagesize = 0;

 static struct ppc_elf_params params = { PLT_UNSET, -1, 0, 0, 0, 0, 0 };

 static void
 ppc_after_open_output (void)
 {
   if (params.emit_stub_syms < 0)
     params.emit_stub_syms = (link_info.emitrelocations
 			     || bfd_link_pic (&link_info));
   if (pagesize == 0)
     pagesize = config.commonpagesize;
   params.pagesize_p2 = bfd_log2 (pagesize);
   ppc_elf_link_params (&link_info, &params);
 }

 EOF

 # No --secure-plt, --bss-plt, or --sdata-got for vxworks.
 if test -z "$VXWORKS_BASE_EM_FILE" ; then
   fragment <<EOF
 static void
 ppc_after_open (void)
 {
   if (is_ppc_elf (link_info.output_bfd))
     {
       int new_plt;
       int keep_new;
       unsigned int num_plt;
       unsigned int num_got;
       lang_output_section_statement_type *os;
       lang_output_section_statement_type *plt_os[2];
       lang_output_section_statement_type *got_os[2];

       new_plt = ppc_elf_select_plt_layout (link_info.output_bfd, &link_info);
       if (new_plt < 0)
 	einfo ("%X%P: select_plt_layout problem %E\n");

       num_got = 0;
       num_plt = 0;
       for (os = &lang_output_section_statement.head->output_section_statement;
 	   os != NULL;
 	   os = os->next)
 	{
 	  if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0)
 	    {
 	      if (num_plt < 2)
 		plt_os[num_plt] = os;
 	      ++num_plt;
 	    }
 	  if (os->constraint == SPECIAL && strcmp (os->name, ".got") == 0)
 	    {
 	      if (num_got < 2)
 		got_os[num_got] = os;
 	      ++num_got;
 	    }
 	}

       keep_new = new_plt == 1 ? 0 : -1;
       if (num_plt == 2)
 	{
 	  plt_os[0]->constraint = keep_new;
 	  plt_os[1]->constraint = ~keep_new;
 	}
       if (num_got == 2)
 	{
 	  if (old_got)
 	    keep_new = -1;
 	  got_os[0]->constraint = keep_new;
 	  got_os[1]->constraint = ~keep_new;
 	}
     }

   gld${EMULATION_NAME}_after_open ();
 }

 EOF
 fi
 fragment <<EOF
 static void
 ppc_before_allocation (void)
 {
   if (is_ppc_elf (link_info.output_bfd))
     {
       if (ppc_elf_tls_setup (link_info.output_bfd, &link_info)
 	  && !notlsopt)
 	{
 	  if (!ppc_elf_tls_optimize (link_info.output_bfd, &link_info))
 	    {
 	      einfo ("%X%P: TLS problem %E\n");
 	      return;
 	    }
 	}
     }

   gld${EMULATION_NAME}_before_allocation ();

   ppc_elf_maybe_strip_sdata_syms (&link_info);

   if (RELAXATION_ENABLED)
     params.branch_trampolines = 1;

   /* Turn on relaxation if executable sections have addresses that
      might make branches overflow.  */
   else if (!RELAXATION_DISABLED_BY_USER)
     {
       bfd_vma low = (bfd_vma) -1;
       bfd_vma high = 0;
       asection *o;

       /* Run lang_size_sections (if not already done).  */
       if (expld.phase != lang_mark_phase_enum)
 	{
 	  expld.phase = lang_mark_phase_enum;
 	  expld.dataseg.phase = exp_dataseg_none;
 	  one_lang_size_sections_pass (NULL, FALSE);
 	  lang_reset_memory_regions ();
 	}

       for (o = link_info.output_bfd->sections; o != NULL; o = o->next)
 	{
 	  if ((o->flags & (SEC_ALLOC | SEC_CODE)) != (SEC_ALLOC | SEC_CODE))
 	    continue;
 	  if (o->rawsize == 0)
 	    continue;
 	  if (low > o->vma)
 	    low = o->vma;
 	  if (high < o->vma + o->rawsize - 1)
 	    high = o->vma + o->rawsize - 1;
 	}
       if (high > low && high - low > (1 << 25) - 1)
 	params.branch_trampolines = 1;
     }

   if (params.branch_trampolines
       || params.ppc476_workaround
       || params.pic_fixup > 0)
     ENABLE_RELAXATION;
 }

 /* Replaces default zero fill padding in executable sections with
    "ba 0" instructions.  This works around the ppc476 icache bug if we
    have a function pointer tail call near the end of a page, some
    small amount of padding, then the function called at the beginning
    of the next page.  If the "ba 0" is ever executed we should hit a
    segv, so it's almost as good as an illegal instruction (zero).  */

 static void
 no_zero_padding (lang_statement_union_type *l)
 {
   if (l->header.type == lang_padding_statement_enum
       && l->padding_statement.size != 0
       && l->padding_statement.output_section != NULL
       && (l->padding_statement.output_section->flags & SEC_CODE) != 0
       && l->padding_statement.fill->size == 0)
     {
       struct _ppc_fill_type
       {
 	size_t size;
 	unsigned char data[4];
       };
       static struct _ppc_fill_type fill_be = { 4, {0x48, 0, 0, 2} };
       static struct _ppc_fill_type fill_le = { 4, {2, 0, 0, 0x48} };

       if (bfd_big_endian (link_info.output_bfd))
 	l->padding_statement.fill = (struct _fill_type *) &fill_be;
       else
 	l->padding_statement.fill = (struct _fill_type *) &fill_le;
     }
 }

 static void
 ppc_finish (void)
 {
   if (params.ppc476_workaround)
     lang_for_each_statement (no_zero_padding);
   finish_default ();
 }

 EOF

 if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
   fragment <<EOF
 /* Special handling for embedded SPU executables.  */
 extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
 static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);

 static bfd_boolean
 ppc_recognized_file (lang_input_statement_type *entry)
 {
   if (embedded_spu_file (entry, "-m32"))
     return TRUE;

   return gld${EMULATION_NAME}_load_symbols (entry);
 }

 EOF
 LDEMUL_RECOGNIZED_FILE=ppc_recognized_file
 fi

 # Define some shell vars to insert bits of code into the standard elf
 # parse_args and list_options functions.
 #
 PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}'
 #define OPTION_NO_TLS_OPT		321
 #define OPTION_NO_TLS_GET_ADDR_OPT	(OPTION_NO_TLS_OPT + 1)
 #define OPTION_NEW_PLT			(OPTION_NO_TLS_GET_ADDR_OPT + 1)
 #define OPTION_OLD_PLT			(OPTION_NEW_PLT + 1)
 #define OPTION_OLD_GOT			(OPTION_OLD_PLT + 1)
 #define OPTION_STUBSYMS			(OPTION_OLD_GOT + 1)
 #define OPTION_NO_STUBSYMS		(OPTION_STUBSYMS + 1)
 #define OPTION_PPC476_WORKAROUND	(OPTION_NO_STUBSYMS + 1)
 #define OPTION_NO_PPC476_WORKAROUND	(OPTION_PPC476_WORKAROUND + 1)
 #define OPTION_NO_PICFIXUP		(OPTION_NO_PPC476_WORKAROUND + 1)
 '

 PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
   { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
   { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
   { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
   { "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },'
 if test -z "$VXWORKS_BASE_EM_FILE" ; then
   PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
   { "secure-plt", no_argument, NULL, OPTION_NEW_PLT },
   { "bss-plt", no_argument, NULL, OPTION_OLD_PLT },
   { "sdata-got", no_argument, NULL, OPTION_OLD_GOT },'
 fi
 PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
   { "ppc476-workaround", optional_argument, NULL, OPTION_PPC476_WORKAROUND },
   { "no-ppc476-workaround", no_argument, NULL, OPTION_NO_PPC476_WORKAROUND },
   { "no-pic-fixup", no_argument, NULL, OPTION_NO_PICFIXUP },
 '

 PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'
   fprintf (file, _("\
   --emit-stub-syms            Label linker stubs with a symbol.\n\
   --no-emit-stub-syms         Don'\''t label linker stubs with a symbol.\n\
   --no-tls-optimize           Don'\''t try to optimize TLS accesses.\n\
   --no-tls-get-addr-optimize  Don'\''t use a special __tls_get_addr call.\n'
 if test -z "$VXWORKS_BASE_EM_FILE" ; then
   PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'\
   --secure-plt                Use new-style PLT if possible.\n\
   --bss-plt                   Force old-style BSS PLT.\n\
   --sdata-got                 Force GOT location just before .sdata.\n'
 fi
 PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'\
   --ppc476-workaround [=pagesize]\n\
                               Avoid a cache bug on ppc476.\n\
   --no-ppc476-workaround      Disable workaround.\n\
   --no-pic-fixup              Don'\''t edit non-pic to pic.\n"
 		   ));
 '

 PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}'
     case OPTION_STUBSYMS:
       params.emit_stub_syms = 1;
       break;

     case OPTION_NO_STUBSYMS:
       params.emit_stub_syms = 0;
       break;

     case OPTION_NO_TLS_OPT:
       notlsopt = 1;
       break;

     case OPTION_NO_TLS_GET_ADDR_OPT:
       params.no_tls_get_addr_opt = 1;
       break;

     case OPTION_NEW_PLT:
       params.plt_style = PLT_NEW;
       break;

     case OPTION_OLD_PLT:
       params.plt_style = PLT_OLD;
       break;

     case OPTION_OLD_GOT:
       old_got = 1;
       break;

     case OPTION_TRADITIONAL_FORMAT:
       notlsopt = 1;
       params.no_tls_get_addr_opt = 1;
       return FALSE;

     case OPTION_PPC476_WORKAROUND:
       params.ppc476_workaround = 1;
       if (optarg != NULL)
 	{
 	  char *end;
 	  pagesize = strtoul (optarg, &end, 0);
 	  if (*end
 	      || (pagesize < 4096 && pagesize != 0)
 	      || pagesize != (pagesize & -pagesize))
 	    einfo (_("%P%F: invalid pagesize `%s'\''\n"), optarg);
 	}
       break;

     case OPTION_NO_PPC476_WORKAROUND:
       params.ppc476_workaround = 0;
       break;

     case OPTION_NO_PICFIXUP:
       params.pic_fixup = -1;
       break;
 '

 # Put these extra ppc32elf routines in ld_${EMULATION_NAME}_emulation
 #
 LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_after_open_output
 if test -z "$VXWORKS_BASE_EM_FILE" ; then
   LDEMUL_AFTER_OPEN=ppc_after_open
 fi
 LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
 LDEMUL_FINISH=ppc_finish
	# This shell script emits a C file. -- C --
	# Copyright (C) 2003-2016 Free Software Foundation, Inc.
	#
	# This file is part of the GNU Binutils.
	#
	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 3 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program; if not, write to the Free Software
	# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	# MA 02110-1301, USA.
	#

	# This file is sourced from elf32.em, and defines extra powerpc32-elf
	# specific routines.
	#
	fragment <<EOF

	#include "libbfd.h"
	#include "elf32-ppc.h"
	#include "ldlex.h"
	#include "ldlang.h"

	#define is_ppc_elf(bfd) \
	(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
	&& elf_object_id (bfd) == PPC32_ELF_DATA)

	/* Whether to run tls optimization. */
	static int notlsopt = 0;

	/* Choose the correct place for .got. */
	static int old_got = 0;

	static bfd_vma pagesize = 0;

	static struct ppc_elf_params params = { PLT_UNSET, -1, 0, 0, 0, 0, 0 };

	static void
	ppc_after_open_output (void)
	{
	if (params.emit_stub_syms < 0)
	params.emit_stub_syms = (link_info.emitrelocations
	\|\| bfd_link_pic (&link_info));
	if (pagesize == 0)
	pagesize = config.commonpagesize;
	params.pagesize_p2 = bfd_log2 (pagesize);
	ppc_elf_link_params (&link_info, &params);
	}

	EOF

	# No --secure-plt, --bss-plt, or --sdata-got for vxworks.
	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	fragment <<EOF
	static void
	ppc_after_open (void)
	{
	if (is_ppc_elf (link_info.output_bfd))
	{
	int new_plt;
	int keep_new;
	unsigned int num_plt;
	unsigned int num_got;
	lang_output_section_statement_type *os;
	lang_output_section_statement_type *plt_os[2];
	lang_output_section_statement_type *got_os[2];

	new_plt = ppc_elf_select_plt_layout (link_info.output_bfd, &link_info);
	if (new_plt < 0)
	einfo ("%X%P: select_plt_layout problem %E\n");

	num_got = 0;
	num_plt = 0;
	for (os = &lang_output_section_statement.head->output_section_statement;
	os != NULL;
	os = os->next)
	{
	if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0)
	{
	if (num_plt < 2)
	plt_os[num_plt] = os;
	++num_plt;
	}
	if (os->constraint == SPECIAL && strcmp (os->name, ".got") == 0)
	{
	if (num_got < 2)
	got_os[num_got] = os;
	++num_got;
	}
	}

	keep_new = new_plt == 1 ? 0 : -1;
	if (num_plt == 2)
	{
	plt_os[0]->constraint = keep_new;
	plt_os[1]->constraint = ~keep_new;
	}
	if (num_got == 2)
	{
	if (old_got)
	keep_new = -1;
	got_os[0]->constraint = keep_new;
	got_os[1]->constraint = ~keep_new;
	}
	}

	gld${EMULATION_NAME}_after_open ();
	}

	EOF
	fi
	fragment <<EOF
	static void
	ppc_before_allocation (void)
	{
	if (is_ppc_elf (link_info.output_bfd))
	{
	if (ppc_elf_tls_setup (link_info.output_bfd, &link_info)
	&& !notlsopt)
	{
	if (!ppc_elf_tls_optimize (link_info.output_bfd, &link_info))
	{
	einfo ("%X%P: TLS problem %E\n");
	return;
	}
	}
	}

	gld${EMULATION_NAME}_before_allocation ();

	ppc_elf_maybe_strip_sdata_syms (&link_info);

	if (RELAXATION_ENABLED)
	params.branch_trampolines = 1;

	/* Turn on relaxation if executable sections have addresses that
	might make branches overflow. */
	else if (!RELAXATION_DISABLED_BY_USER)
	{
	bfd_vma low = (bfd_vma) -1;
	bfd_vma high = 0;
	asection *o;

	/* Run lang_size_sections (if not already done). */
	if (expld.phase != lang_mark_phase_enum)
	{
	expld.phase = lang_mark_phase_enum;
	expld.dataseg.phase = exp_dataseg_none;
	one_lang_size_sections_pass (NULL, FALSE);
	lang_reset_memory_regions ();
	}

	for (o = link_info.output_bfd->sections; o != NULL; o = o->next)
	{
	if ((o->flags & (SEC_ALLOC \| SEC_CODE)) != (SEC_ALLOC \| SEC_CODE))
	continue;
	if (o->rawsize == 0)
	continue;
	if (low > o->vma)
	low = o->vma;
	if (high < o->vma + o->rawsize - 1)
	high = o->vma + o->rawsize - 1;
	}
	if (high > low && high - low > (1 << 25) - 1)
	params.branch_trampolines = 1;
	}

	if (params.branch_trampolines
	\|\| params.ppc476_workaround
	\|\| params.pic_fixup > 0)
	ENABLE_RELAXATION;
	}

	/* Replaces default zero fill padding in executable sections with
	"ba 0" instructions. This works around the ppc476 icache bug if we
	have a function pointer tail call near the end of a page, some
	small amount of padding, then the function called at the beginning
	of the next page. If the "ba 0" is ever executed we should hit a
	segv, so it's almost as good as an illegal instruction (zero). */

	static void
	no_zero_padding (lang_statement_union_type *l)
	{
	if (l->header.type == lang_padding_statement_enum
	&& l->padding_statement.size != 0
	&& l->padding_statement.output_section != NULL
	&& (l->padding_statement.output_section->flags & SEC_CODE) != 0
	&& l->padding_statement.fill->size == 0)
	{
	struct _ppc_fill_type
	{
	size_t size;
	unsigned char data[4];
	};
	static struct _ppc_fill_type fill_be = { 4, {0x48, 0, 0, 2} };
	static struct _ppc_fill_type fill_le = { 4, {2, 0, 0, 0x48} };

	if (bfd_big_endian (link_info.output_bfd))
	l->padding_statement.fill = (struct _fill_type *) &fill_be;
	else
	l->padding_statement.fill = (struct _fill_type *) &fill_le;
	}
	}

	static void
	ppc_finish (void)
	{
	if (params.ppc476_workaround)
	lang_for_each_statement (no_zero_padding);
	finish_default ();
	}

	EOF

	if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
	fragment <<EOF
	/* Special handling for embedded SPU executables. */
	extern bfd_boolean embedded_spu_file (lang_input_statement_type , const char );
	static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);

	static bfd_boolean
	ppc_recognized_file (lang_input_statement_type *entry)
	{
	if (embedded_spu_file (entry, "-m32"))
	return TRUE;

	return gld${EMULATION_NAME}_load_symbols (entry);
	}

	EOF
	LDEMUL_RECOGNIZED_FILE=ppc_recognized_file
	fi

	# Define some shell vars to insert bits of code into the standard elf
	# parse_args and list_options functions.
	#
	PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}'
	#define OPTION_NO_TLS_OPT 321
	#define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1)
	#define OPTION_NEW_PLT (OPTION_NO_TLS_GET_ADDR_OPT + 1)
	#define OPTION_OLD_PLT (OPTION_NEW_PLT + 1)
	#define OPTION_OLD_GOT (OPTION_OLD_PLT + 1)
	#define OPTION_STUBSYMS (OPTION_OLD_GOT + 1)
	#define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1)
	#define OPTION_PPC476_WORKAROUND (OPTION_NO_STUBSYMS + 1)
	#define OPTION_NO_PPC476_WORKAROUND (OPTION_PPC476_WORKAROUND + 1)
	#define OPTION_NO_PICFIXUP (OPTION_NO_PPC476_WORKAROUND + 1)
	'

	PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
	{ "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
	{ "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
	{ "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
	{ "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },'
	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
	{ "secure-plt", no_argument, NULL, OPTION_NEW_PLT },
	{ "bss-plt", no_argument, NULL, OPTION_OLD_PLT },
	{ "sdata-got", no_argument, NULL, OPTION_OLD_GOT },'
	fi
	PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
	{ "ppc476-workaround", optional_argument, NULL, OPTION_PPC476_WORKAROUND },
	{ "no-ppc476-workaround", no_argument, NULL, OPTION_NO_PPC476_WORKAROUND },
	{ "no-pic-fixup", no_argument, NULL, OPTION_NO_PICFIXUP },
	'

	PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'
	fprintf (file, _("\
	--emit-stub-syms Label linker stubs with a symbol.\n\
	--no-emit-stub-syms Don'\''t label linker stubs with a symbol.\n\
	--no-tls-optimize Don'\''t try to optimize TLS accesses.\n\
	--no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n'
	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'\
	--secure-plt Use new-style PLT if possible.\n\
	--bss-plt Force old-style BSS PLT.\n\
	--sdata-got Force GOT location just before .sdata.\n'
	fi
	PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'\
	--ppc476-workaround [=pagesize]\n\
	Avoid a cache bug on ppc476.\n\
	--no-ppc476-workaround Disable workaround.\n\
	--no-pic-fixup Don'\''t edit non-pic to pic.\n"
	));
	'

	PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}'
	case OPTION_STUBSYMS:
	params.emit_stub_syms = 1;
	break;

	case OPTION_NO_STUBSYMS:
	params.emit_stub_syms = 0;
	break;

	case OPTION_NO_TLS_OPT:
	notlsopt = 1;
	break;

	case OPTION_NO_TLS_GET_ADDR_OPT:
	params.no_tls_get_addr_opt = 1;
	break;

	case OPTION_NEW_PLT:
	params.plt_style = PLT_NEW;
	break;

	case OPTION_OLD_PLT:
	params.plt_style = PLT_OLD;
	break;

	case OPTION_OLD_GOT:
	old_got = 1;
	break;

	case OPTION_TRADITIONAL_FORMAT:
	notlsopt = 1;
	params.no_tls_get_addr_opt = 1;
	return FALSE;

	case OPTION_PPC476_WORKAROUND:
	params.ppc476_workaround = 1;
	if (optarg != NULL)
	{
	char *end;
	pagesize = strtoul (optarg, &end, 0);
	if (*end
	\|\| (pagesize < 4096 && pagesize != 0)
	\|\| pagesize != (pagesize & -pagesize))
	einfo (_("%P%F: invalid pagesize `%s'\''\n"), optarg);
	}
	break;

	case OPTION_NO_PPC476_WORKAROUND:
	params.ppc476_workaround = 0;
	break;

	case OPTION_NO_PICFIXUP:
	params.pic_fixup = -1;
	break;
	'

	# Put these extra ppc32elf routines in ld_${EMULATION_NAME}_emulation
	#
	LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_after_open_output
	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	LDEMUL_AFTER_OPEN=ppc_after_open
	fi
	LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
	LDEMUL_FINISH=ppc_finish