5503fea1b9
* emultempl/hppaelf.em (hppaelf_create_output_section_statements): Likewise. * emultempl/ppc64elf.em (ppc_create_output_section_statements): Likewise. * emultempl/ppc32elf.em (is_ppc_elf32_vec): Delete. Replace all uses with.. (is_ppc_elf): ..this new macro.
383 lines
10 KiB
Plaintext
383 lines
10 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
|
|
# Copyright 1991, 1993, 1994, 1997, 1999, 2000, 2001, 2002, 2003, 2004,
|
|
# 2005, 2007, 2008 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 hppa-elf
|
|
# specific routines.
|
|
#
|
|
fragment <<EOF
|
|
|
|
#include "ldctor.h"
|
|
#include "elf32-hppa.h"
|
|
|
|
|
|
/* Fake input file for stubs. */
|
|
static lang_input_statement_type *stub_file;
|
|
|
|
/* Type of import/export stubs to build. For a single sub-space model,
|
|
we can build smaller import stubs and there is no need for export
|
|
stubs. */
|
|
static int multi_subspace = 0;
|
|
|
|
/* Whether we need to call hppa_layout_sections_again. */
|
|
static int need_laying_out = 0;
|
|
|
|
/* Maximum size of a group of input sections that can be handled by
|
|
one stub section. A value of +/-1 indicates the bfd back-end
|
|
should use a suitable default size. */
|
|
static bfd_signed_vma group_size = 1;
|
|
|
|
/* Stops the linker merging .text sections on a relocatable link,
|
|
and adds millicode library to the list of input files. */
|
|
|
|
static void
|
|
hppaelf_after_parse (void)
|
|
{
|
|
if (link_info.relocatable)
|
|
lang_add_unique (".text");
|
|
|
|
/* Enable this once we split millicode stuff from libgcc:
|
|
lang_add_input_file ("milli",
|
|
lang_input_file_is_l_enum,
|
|
NULL);
|
|
*/
|
|
}
|
|
|
|
/* This is called before the input files are opened. We create a new
|
|
fake input file to hold the stub sections. */
|
|
|
|
static void
|
|
hppaelf_create_output_section_statements (void)
|
|
{
|
|
if (!(bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
|
|
&& elf_object_id (link_info.output_bfd) == HPPA_ELF_TDATA))
|
|
return;
|
|
|
|
stub_file = lang_add_input_file ("linker stubs",
|
|
lang_input_file_is_fake_enum,
|
|
NULL);
|
|
stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd);
|
|
if (stub_file->the_bfd == NULL
|
|
|| ! bfd_set_arch_mach (stub_file->the_bfd,
|
|
bfd_get_arch (link_info.output_bfd),
|
|
bfd_get_mach (link_info.output_bfd)))
|
|
{
|
|
einfo ("%X%P: can not create BFD %E\n");
|
|
return;
|
|
}
|
|
|
|
stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
|
|
ldlang_add_file (stub_file);
|
|
}
|
|
|
|
|
|
struct hook_stub_info
|
|
{
|
|
lang_statement_list_type add;
|
|
asection *input_section;
|
|
};
|
|
|
|
/* Traverse the linker tree to find the spot where the stub goes. */
|
|
|
|
static bfd_boolean
|
|
hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp)
|
|
{
|
|
lang_statement_union_type *l;
|
|
bfd_boolean ret;
|
|
|
|
for (; (l = *lp) != NULL; lp = &l->header.next)
|
|
{
|
|
switch (l->header.type)
|
|
{
|
|
case lang_constructors_statement_enum:
|
|
ret = hook_in_stub (info, &constructor_list.head);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
|
|
case lang_output_section_statement_enum:
|
|
ret = hook_in_stub (info,
|
|
&l->output_section_statement.children.head);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
|
|
case lang_wild_statement_enum:
|
|
ret = hook_in_stub (info, &l->wild_statement.children.head);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
|
|
case lang_group_statement_enum:
|
|
ret = hook_in_stub (info, &l->group_statement.children.head);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
|
|
case lang_input_section_enum:
|
|
if (l->input_section.section == info->input_section)
|
|
{
|
|
/* We've found our section. Insert the stub immediately
|
|
before its associated input section. */
|
|
*lp = info->add.head;
|
|
*(info->add.tail) = l;
|
|
return TRUE;
|
|
}
|
|
break;
|
|
|
|
case lang_data_statement_enum:
|
|
case lang_reloc_statement_enum:
|
|
case lang_object_symbols_statement_enum:
|
|
case lang_output_statement_enum:
|
|
case lang_target_statement_enum:
|
|
case lang_input_statement_enum:
|
|
case lang_assignment_statement_enum:
|
|
case lang_padding_statement_enum:
|
|
case lang_address_statement_enum:
|
|
case lang_fill_statement_enum:
|
|
break;
|
|
|
|
default:
|
|
FAIL ();
|
|
break;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/* Call-back for elf32_hppa_size_stubs. */
|
|
|
|
/* Create a new stub section, and arrange for it to be linked
|
|
immediately before INPUT_SECTION. */
|
|
|
|
static asection *
|
|
hppaelf_add_stub_section (const char *stub_sec_name, asection *input_section)
|
|
{
|
|
asection *stub_sec;
|
|
flagword flags;
|
|
asection *output_section;
|
|
const char *secname;
|
|
lang_output_section_statement_type *os;
|
|
struct hook_stub_info info;
|
|
|
|
stub_sec = bfd_make_section_anyway (stub_file->the_bfd, stub_sec_name);
|
|
if (stub_sec == NULL)
|
|
goto err_ret;
|
|
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
|
|
| SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP);
|
|
if (!bfd_set_section_flags (stub_file->the_bfd, stub_sec, flags))
|
|
goto err_ret;
|
|
|
|
output_section = input_section->output_section;
|
|
secname = bfd_get_section_name (output_section->owner, output_section);
|
|
os = lang_output_section_find (secname);
|
|
|
|
info.input_section = input_section;
|
|
lang_list_init (&info.add);
|
|
lang_add_section (&info.add, stub_sec, os);
|
|
|
|
if (info.add.head == NULL)
|
|
goto err_ret;
|
|
|
|
if (hook_in_stub (&info, &os->children.head))
|
|
return stub_sec;
|
|
|
|
err_ret:
|
|
einfo ("%X%P: can not make stub section: %E\n");
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* Another call-back for elf32_hppa_size_stubs. */
|
|
|
|
static void
|
|
hppaelf_layout_sections_again (void)
|
|
{
|
|
/* If we have changed sizes of the stub sections, then we need
|
|
to recalculate all the section offsets. This may mean we need to
|
|
add even more stubs. */
|
|
gld${EMULATION_NAME}_map_segments (TRUE);
|
|
need_laying_out = -1;
|
|
}
|
|
|
|
|
|
static void
|
|
build_section_lists (lang_statement_union_type *statement)
|
|
{
|
|
if (statement->header.type == lang_input_section_enum)
|
|
{
|
|
asection *i = statement->input_section.section;
|
|
|
|
if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
|
|
&& (i->flags & SEC_EXCLUDE) == 0
|
|
&& i->output_section != NULL
|
|
&& i->output_section->owner == link_info.output_bfd)
|
|
{
|
|
elf32_hppa_next_input_section (&link_info, i);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Final emulation specific call. For the PA we use this opportunity
|
|
to build linker stubs. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_finish (void)
|
|
{
|
|
/* bfd_elf_discard_info just plays with debugging sections,
|
|
ie. doesn't affect any code, so we can delay resizing the
|
|
sections. It's likely we'll resize everything in the process of
|
|
adding stubs. */
|
|
if (bfd_elf_discard_info (link_info.output_bfd, &link_info))
|
|
need_laying_out = 1;
|
|
|
|
/* If generating a relocatable output file, then we don't
|
|
have to examine the relocs. */
|
|
if (stub_file != NULL && !link_info.relocatable)
|
|
{
|
|
int ret = elf32_hppa_setup_section_lists (link_info.output_bfd,
|
|
&link_info);
|
|
|
|
if (ret != 0)
|
|
{
|
|
if (ret < 0)
|
|
{
|
|
einfo ("%X%P: can not size stub section: %E\n");
|
|
return;
|
|
}
|
|
|
|
lang_for_each_statement (build_section_lists);
|
|
|
|
/* Call into the BFD backend to do the real work. */
|
|
if (! elf32_hppa_size_stubs (link_info.output_bfd,
|
|
stub_file->the_bfd,
|
|
&link_info,
|
|
multi_subspace,
|
|
group_size,
|
|
&hppaelf_add_stub_section,
|
|
&hppaelf_layout_sections_again))
|
|
{
|
|
einfo ("%X%P: can not size stub section: %E\n");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (need_laying_out != -1)
|
|
gld${EMULATION_NAME}_map_segments (need_laying_out);
|
|
|
|
if (! link_info.relocatable)
|
|
{
|
|
/* Set the global data pointer. */
|
|
if (! elf32_hppa_set_gp (link_info.output_bfd, &link_info))
|
|
{
|
|
einfo ("%X%P: can not set gp\n");
|
|
return;
|
|
}
|
|
|
|
/* Now build the linker stubs. */
|
|
if (stub_file != NULL && stub_file->the_bfd->sections != NULL)
|
|
{
|
|
if (! elf32_hppa_build_stubs (&link_info))
|
|
einfo ("%X%P: can not build stubs: %E\n");
|
|
}
|
|
}
|
|
|
|
finish_default ();
|
|
}
|
|
|
|
|
|
/* Avoid processing the fake stub_file in vercheck, stat_needed and
|
|
check_needed routines. */
|
|
|
|
static void (*real_func) (lang_input_statement_type *);
|
|
|
|
static void hppa_for_each_input_file_wrapper (lang_input_statement_type *l)
|
|
{
|
|
if (l != stub_file)
|
|
(*real_func) (l);
|
|
}
|
|
|
|
static void
|
|
hppa_lang_for_each_input_file (void (*func) (lang_input_statement_type *))
|
|
{
|
|
real_func = func;
|
|
lang_for_each_input_file (&hppa_for_each_input_file_wrapper);
|
|
}
|
|
|
|
#define lang_for_each_input_file hppa_lang_for_each_input_file
|
|
|
|
EOF
|
|
|
|
# Define some shell vars to insert bits of code into the standard elf
|
|
# parse_args and list_options functions.
|
|
#
|
|
PARSE_AND_LIST_PROLOGUE='
|
|
#define OPTION_MULTI_SUBSPACE 301
|
|
#define OPTION_STUBGROUP_SIZE (OPTION_MULTI_SUBSPACE + 1)
|
|
'
|
|
|
|
PARSE_AND_LIST_LONGOPTS='
|
|
{ "multi-subspace", no_argument, NULL, OPTION_MULTI_SUBSPACE },
|
|
{ "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE },
|
|
'
|
|
|
|
PARSE_AND_LIST_OPTIONS='
|
|
fprintf (file, _("\
|
|
--multi-subspace Generate import and export stubs to support\n\
|
|
multiple sub-space shared libraries\n"
|
|
));
|
|
fprintf (file, _("\
|
|
--stub-group-size=N Maximum size of a group of input sections that\n\
|
|
can be handled by one stub section. A negative\n\
|
|
value locates all stubs before their branches\n\
|
|
(with a group size of -N), while a positive\n\
|
|
value allows two groups of input sections, one\n\
|
|
before, and one after each stub section.\n\
|
|
Values of +/-1 indicate the linker should\n\
|
|
choose suitable defaults.\n"
|
|
));
|
|
'
|
|
|
|
PARSE_AND_LIST_ARGS_CASES='
|
|
case OPTION_MULTI_SUBSPACE:
|
|
multi_subspace = 1;
|
|
break;
|
|
|
|
case OPTION_STUBGROUP_SIZE:
|
|
{
|
|
const char *end;
|
|
group_size = bfd_scan_vma (optarg, &end, 0);
|
|
if (*end)
|
|
einfo (_("%P%F: invalid number `%s'\''\n"), optarg);
|
|
}
|
|
break;
|
|
'
|
|
|
|
# Put these extra hppaelf routines in ld_${EMULATION_NAME}_emulation
|
|
#
|
|
LDEMUL_AFTER_PARSE=hppaelf_after_parse
|
|
LDEMUL_FINISH=gld${EMULATION_NAME}_finish
|
|
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=hppaelf_create_output_section_statements
|