[deliverable/binutils-gdb.git] / ld / emultempl / ppc32elf.em

# 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
Commit	Line	Data
	1	# This shell script emits a C file. -- C --
	2	# Copyright (C) 2003-2016 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 powerpc32-elf
	23	# specific routines.
	24	#
	25	fragment <<EOF
	26
	27	#include "libbfd.h"
	28	#include "elf32-ppc.h"
	29	#include "ldlex.h"
	30	#include "ldlang.h"
	31
	32	#define is_ppc_elf(bfd) \
	33	(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
	34	&& elf_object_id (bfd) == PPC32_ELF_DATA)
	35
	36	/* Whether to run tls optimization. */
	37	static int notlsopt = 0;
	38
	39	/* Choose the correct place for .got. */
	40	static int old_got = 0;
	41
	42	static bfd_vma pagesize = 0;
	43
	44	static struct ppc_elf_params params = { PLT_UNSET, -1, 0, 0, 0, 0, 0 };
	45
	46	static void
	47	ppc_after_open_output (void)
	48	{
	49	if (params.emit_stub_syms < 0)
	50	params.emit_stub_syms = (link_info.emitrelocations
	51	\|\| bfd_link_pic (&link_info));
	52	if (pagesize == 0)
	53	pagesize = config.commonpagesize;
	54	params.pagesize_p2 = bfd_log2 (pagesize);
	55	ppc_elf_link_params (&link_info, &params);
	56	}
	57
	58	EOF
	59
	60	# No --secure-plt, --bss-plt, or --sdata-got for vxworks.
	61	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	62	fragment <<EOF
	63	static void
	64	ppc_after_open (void)
	65	{
	66	if (is_ppc_elf (link_info.output_bfd))
	67	{
	68	int new_plt;
	69	int keep_new;
	70	unsigned int num_plt;
	71	unsigned int num_got;
	72	lang_output_section_statement_type *os;
	73	lang_output_section_statement_type *plt_os[2];
	74	lang_output_section_statement_type *got_os[2];
	75
	76	new_plt = ppc_elf_select_plt_layout (link_info.output_bfd, &link_info);
	77	if (new_plt < 0)
	78	einfo ("%X%P: select_plt_layout problem %E\n");
	79
	80	num_got = 0;
	81	num_plt = 0;
	82	for (os = &lang_output_section_statement.head->output_section_statement;
	83	os != NULL;
	84	os = os->next)
	85	{
	86	if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0)
	87	{
	88	if (num_plt < 2)
	89	plt_os[num_plt] = os;
	90	++num_plt;
	91	}
	92	if (os->constraint == SPECIAL && strcmp (os->name, ".got") == 0)
	93	{
	94	if (num_got < 2)
	95	got_os[num_got] = os;
	96	++num_got;
	97	}
	98	}
	99
	100	keep_new = new_plt == 1 ? 0 : -1;
	101	if (num_plt == 2)
	102	{
	103	plt_os[0]->constraint = keep_new;
	104	plt_os[1]->constraint = ~keep_new;
	105	}
	106	if (num_got == 2)
	107	{
	108	if (old_got)
	109	keep_new = -1;
	110	got_os[0]->constraint = keep_new;
	111	got_os[1]->constraint = ~keep_new;
	112	}
	113	}
	114
	115	gld${EMULATION_NAME}_after_open ();
	116	}
	117
	118	EOF
	119	fi
	120	fragment <<EOF
	121	static void
	122	ppc_before_allocation (void)
	123	{
	124	if (is_ppc_elf (link_info.output_bfd))
	125	{
	126	if (ppc_elf_tls_setup (link_info.output_bfd, &link_info)
	127	&& !notlsopt)
	128	{
	129	if (!ppc_elf_tls_optimize (link_info.output_bfd, &link_info))
	130	{
	131	einfo ("%X%P: TLS problem %E\n");
	132	return;
	133	}
	134	}
	135	}
	136
	137	gld${EMULATION_NAME}_before_allocation ();
	138
	139	ppc_elf_maybe_strip_sdata_syms (&link_info);
	140
	141	if (RELAXATION_ENABLED)
	142	params.branch_trampolines = 1;
	143
	144	/* Turn on relaxation if executable sections have addresses that
	145	might make branches overflow. */
	146	else if (!RELAXATION_DISABLED_BY_USER)
	147	{
	148	bfd_vma low = (bfd_vma) -1;
	149	bfd_vma high = 0;
	150	asection *o;
	151
	152	/* Run lang_size_sections (if not already done). */
	153	if (expld.phase != lang_mark_phase_enum)
	154	{
	155	expld.phase = lang_mark_phase_enum;
	156	expld.dataseg.phase = exp_dataseg_none;
	157	one_lang_size_sections_pass (NULL, FALSE);
	158	lang_reset_memory_regions ();
	159	}
	160
	161	for (o = link_info.output_bfd->sections; o != NULL; o = o->next)
	162	{
	163	if ((o->flags & (SEC_ALLOC \| SEC_CODE)) != (SEC_ALLOC \| SEC_CODE))
	164	continue;
	165	if (o->rawsize == 0)
	166	continue;
	167	if (low > o->vma)
	168	low = o->vma;
	169	if (high < o->vma + o->rawsize - 1)
	170	high = o->vma + o->rawsize - 1;
	171	}
	172	if (high > low && high - low > (1 << 25) - 1)
	173	params.branch_trampolines = 1;
	174	}
	175
	176	if (params.branch_trampolines
	177	\|\| params.ppc476_workaround
	178	\|\| params.pic_fixup > 0)
	179	ENABLE_RELAXATION;
	180	}
	181
	182	/* Replaces default zero fill padding in executable sections with
	183	"ba 0" instructions. This works around the ppc476 icache bug if we
	184	have a function pointer tail call near the end of a page, some
	185	small amount of padding, then the function called at the beginning
	186	of the next page. If the "ba 0" is ever executed we should hit a
	187	segv, so it's almost as good as an illegal instruction (zero). */
	188
	189	static void
	190	no_zero_padding (lang_statement_union_type *l)
	191	{
	192	if (l->header.type == lang_padding_statement_enum
	193	&& l->padding_statement.size != 0
	194	&& l->padding_statement.output_section != NULL
	195	&& (l->padding_statement.output_section->flags & SEC_CODE) != 0
	196	&& l->padding_statement.fill->size == 0)
	197	{
	198	struct _ppc_fill_type
	199	{
	200	size_t size;
	201	unsigned char data[4];
	202	};
	203	static struct _ppc_fill_type fill_be = { 4, {0x48, 0, 0, 2} };
	204	static struct _ppc_fill_type fill_le = { 4, {2, 0, 0, 0x48} };
	205
	206	if (bfd_big_endian (link_info.output_bfd))
	207	l->padding_statement.fill = (struct _fill_type *) &fill_be;
	208	else
	209	l->padding_statement.fill = (struct _fill_type *) &fill_le;
	210	}
	211	}
	212
	213	static void
	214	ppc_finish (void)
	215	{
	216	if (params.ppc476_workaround)
	217	lang_for_each_statement (no_zero_padding);
	218	finish_default ();
	219	}
	220
	221	EOF
	222
	223	if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
	224	fragment <<EOF
	225	/* Special handling for embedded SPU executables. */
	226	extern bfd_boolean embedded_spu_file (lang_input_statement_type , const char );
	227	static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);
	228
	229	static bfd_boolean
	230	ppc_recognized_file (lang_input_statement_type *entry)
	231	{
	232	if (embedded_spu_file (entry, "-m32"))
	233	return TRUE;
	234
	235	return gld${EMULATION_NAME}_load_symbols (entry);
	236	}
	237
	238	EOF
	239	LDEMUL_RECOGNIZED_FILE=ppc_recognized_file
	240	fi
	241
	242	# Define some shell vars to insert bits of code into the standard elf
	243	# parse_args and list_options functions.
	244	#
	245	PARSE_AND_LIST_PROLOGUE=${PARSE_AND_LIST_PROLOGUE}'
	246	#define OPTION_NO_TLS_OPT 321
	247	#define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1)
	248	#define OPTION_NEW_PLT (OPTION_NO_TLS_GET_ADDR_OPT + 1)
	249	#define OPTION_OLD_PLT (OPTION_NEW_PLT + 1)
	250	#define OPTION_OLD_GOT (OPTION_OLD_PLT + 1)
	251	#define OPTION_STUBSYMS (OPTION_OLD_GOT + 1)
	252	#define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1)
	253	#define OPTION_PPC476_WORKAROUND (OPTION_NO_STUBSYMS + 1)
	254	#define OPTION_NO_PPC476_WORKAROUND (OPTION_PPC476_WORKAROUND + 1)
	255	#define OPTION_NO_PICFIXUP (OPTION_NO_PPC476_WORKAROUND + 1)
	256	'
	257
	258	PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
	259	{ "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
	260	{ "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
	261	{ "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
	262	{ "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },'
	263	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	264	PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
	265	{ "secure-plt", no_argument, NULL, OPTION_NEW_PLT },
	266	{ "bss-plt", no_argument, NULL, OPTION_OLD_PLT },
	267	{ "sdata-got", no_argument, NULL, OPTION_OLD_GOT },'
	268	fi
	269	PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
	270	{ "ppc476-workaround", optional_argument, NULL, OPTION_PPC476_WORKAROUND },
	271	{ "no-ppc476-workaround", no_argument, NULL, OPTION_NO_PPC476_WORKAROUND },
	272	{ "no-pic-fixup", no_argument, NULL, OPTION_NO_PICFIXUP },
	273	'
	274
	275	PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'
	276	fprintf (file, _("\
	277	--emit-stub-syms Label linker stubs with a symbol.\n\
	278	--no-emit-stub-syms Don'\''t label linker stubs with a symbol.\n\
	279	--no-tls-optimize Don'\''t try to optimize TLS accesses.\n\
	280	--no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n'
	281	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	282	PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'\
	283	--secure-plt Use new-style PLT if possible.\n\
	284	--bss-plt Force old-style BSS PLT.\n\
	285	--sdata-got Force GOT location just before .sdata.\n'
	286	fi
	287	PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}'\
	288	--ppc476-workaround [=pagesize]\n\
	289	Avoid a cache bug on ppc476.\n\
	290	--no-ppc476-workaround Disable workaround.\n\
	291	--no-pic-fixup Don'\''t edit non-pic to pic.\n"
	292	));
	293	'
	294
	295	PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}'
	296	case OPTION_STUBSYMS:
	297	params.emit_stub_syms = 1;
	298	break;
	299
	300	case OPTION_NO_STUBSYMS:
	301	params.emit_stub_syms = 0;
	302	break;
	303
	304	case OPTION_NO_TLS_OPT:
	305	notlsopt = 1;
	306	break;
	307
	308	case OPTION_NO_TLS_GET_ADDR_OPT:
	309	params.no_tls_get_addr_opt = 1;
	310	break;
	311
	312	case OPTION_NEW_PLT:
	313	params.plt_style = PLT_NEW;
	314	break;
	315
	316	case OPTION_OLD_PLT:
	317	params.plt_style = PLT_OLD;
	318	break;
	319
	320	case OPTION_OLD_GOT:
	321	old_got = 1;
	322	break;
	323
	324	case OPTION_TRADITIONAL_FORMAT:
	325	notlsopt = 1;
	326	params.no_tls_get_addr_opt = 1;
	327	return FALSE;
	328
	329	case OPTION_PPC476_WORKAROUND:
	330	params.ppc476_workaround = 1;
	331	if (optarg != NULL)
	332	{
	333	char *end;
	334	pagesize = strtoul (optarg, &end, 0);
	335	if (*end
	336	\|\| (pagesize < 4096 && pagesize != 0)
	337	\|\| pagesize != (pagesize & -pagesize))
	338	einfo (_("%P%F: invalid pagesize `%s'\''\n"), optarg);
	339	}
	340	break;
	341
	342	case OPTION_NO_PPC476_WORKAROUND:
	343	params.ppc476_workaround = 0;
	344	break;
	345
	346	case OPTION_NO_PICFIXUP:
	347	params.pic_fixup = -1;
	348	break;
	349	'
	350
	351	# Put these extra ppc32elf routines in ld_${EMULATION_NAME}_emulation
	352	#
	353	LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_after_open_output
	354	if test -z "$VXWORKS_BASE_EM_FILE" ; then
	355	LDEMUL_AFTER_OPEN=ppc_after_open
	356	fi
	357	LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
	358	LDEMUL_FINISH=ppc_finish