218 lines
6.4 KiB
Plaintext
218 lines
6.4 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
|
|
# It does some substitutions.
|
|
if [ -z "$MACHINE" ]; then
|
|
OUTPUT_ARCH=${ARCH}
|
|
else
|
|
OUTPUT_ARCH=${ARCH}:${MACHINE}
|
|
fi
|
|
fragment <<EOF
|
|
/* This file is is generated by a shell script. DO NOT EDIT! */
|
|
|
|
/* Linux a.out emulation code for ${EMULATION_NAME}
|
|
Copyright (C) 1991-2020 Free Software Foundation, Inc.
|
|
Written by Steve Chamberlain <sac@cygnus.com>
|
|
Linux support by Eric Youngdale <ericy@cais.cais.com>
|
|
|
|
This file is part of the GNU Binutils.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#define TARGET_IS_${EMULATION_NAME}
|
|
|
|
#include "sysdep.h"
|
|
#include "bfd.h"
|
|
#include "bfdlink.h"
|
|
#include "ctf-api.h"
|
|
|
|
#include "ld.h"
|
|
#include "ldmain.h"
|
|
#include "ldmisc.h"
|
|
#include "ldexp.h"
|
|
#include "ldlang.h"
|
|
#include "ldfile.h"
|
|
#include "ldemul.h"
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_before_parse (void)
|
|
{
|
|
ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
|
|
input_flags.dynamic = TRUE;
|
|
config.has_shared = TRUE;
|
|
link_info.check_relocs_after_open_input = TRUE;
|
|
link_info.relro = DEFAULT_LD_Z_RELRO;
|
|
}
|
|
|
|
/* Try to open a dynamic archive. This is where we know that Linux
|
|
dynamic libraries have an extension of .sa. */
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_open_dynamic_archive
|
|
(const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
|
|
{
|
|
char *string;
|
|
|
|
if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
|
|
return FALSE;
|
|
|
|
string = (char *) xmalloc (strlen (search->name)
|
|
+ strlen (entry->filename)
|
|
+ strlen (arch)
|
|
+ sizeof "/lib.sa");
|
|
|
|
sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch);
|
|
|
|
if (! ldfile_try_open_bfd (string, entry))
|
|
{
|
|
free (string);
|
|
return FALSE;
|
|
}
|
|
|
|
entry->filename = string;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* This is called by the create_output_section_statements routine via
|
|
lang_for_each_statement. It locates any address assignment to
|
|
.text, and modifies it to include the size of the headers. This
|
|
causes -Ttext to mean the starting address of the header, rather
|
|
than the starting address of .text, which is compatible with other
|
|
Linux tools. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_find_address_statement (lang_statement_union_type *s)
|
|
{
|
|
if (s->header.type == lang_address_statement_enum
|
|
&& strcmp (s->address_statement.section_name, ".text") == 0)
|
|
{
|
|
ASSERT (s->address_statement.address->type.node_class == etree_value);
|
|
s->address_statement.address->value.value += 0x20;
|
|
}
|
|
}
|
|
|
|
/* This is called before opening the input BFD's. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_create_output_section_statements (void)
|
|
{
|
|
lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement);
|
|
}
|
|
|
|
/* This is called after the sections have been attached to output
|
|
sections, but before any sizes or addresses have been set. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_before_allocation (void)
|
|
{
|
|
if (bfd_link_relocatable (&link_info))
|
|
return;
|
|
|
|
/* Let the backend work out the sizes of any sections required by
|
|
dynamic linking. */
|
|
if (! bfd_${EMULATION_NAME}_size_dynamic_sections (link_info.output_bfd,
|
|
&link_info))
|
|
einfo (_("%F%P: failed to set dynamic section sizes: %E\n"));
|
|
|
|
before_allocation_default ();
|
|
}
|
|
|
|
static char *
|
|
gld${EMULATION_NAME}_get_script (int *isfile)
|
|
EOF
|
|
|
|
if test x"$COMPILE_IN" = xyes
|
|
then
|
|
# Scripts compiled in.
|
|
|
|
# sed commands to quote an ld script as a C string.
|
|
sc="-f stringify.sed"
|
|
|
|
fragment <<EOF
|
|
{
|
|
*isfile = 0;
|
|
|
|
if (bfd_link_relocatable (&link_info) && config.build_constructors)
|
|
return
|
|
EOF
|
|
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
|
|
echo ' ; else return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
|
|
echo '; }' >> e${EMULATION_NAME}.c
|
|
|
|
else
|
|
# Scripts read from the filesystem.
|
|
|
|
fragment <<EOF
|
|
{
|
|
*isfile = 1;
|
|
|
|
if (bfd_link_relocatable (&link_info) && config.build_constructors)
|
|
return "ldscripts/${EMULATION_NAME}.xu";
|
|
else if (bfd_link_relocatable (&link_info))
|
|
return "ldscripts/${EMULATION_NAME}.xr";
|
|
else if (!config.text_read_only)
|
|
return "ldscripts/${EMULATION_NAME}.xbn";
|
|
else if (!config.magic_demand_paged)
|
|
return "ldscripts/${EMULATION_NAME}.xn";
|
|
else
|
|
return "ldscripts/${EMULATION_NAME}.x";
|
|
}
|
|
EOF
|
|
|
|
fi
|
|
|
|
fragment <<EOF
|
|
|
|
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
|
{
|
|
gld${EMULATION_NAME}_before_parse,
|
|
syslib_default,
|
|
hll_default,
|
|
after_parse_default,
|
|
after_open_default,
|
|
after_check_relocs_default,
|
|
after_allocation_default,
|
|
set_output_arch_default,
|
|
ldemul_default_target,
|
|
gld${EMULATION_NAME}_before_allocation,
|
|
gld${EMULATION_NAME}_get_script,
|
|
"${EMULATION_NAME}",
|
|
"${OUTPUT_FORMAT}",
|
|
finish_default,
|
|
gld${EMULATION_NAME}_create_output_section_statements,
|
|
gld${EMULATION_NAME}_open_dynamic_archive,
|
|
NULL, /* place orphan */
|
|
NULL, /* set symbols */
|
|
NULL, /* parse args */
|
|
NULL, /* add_options */
|
|
NULL, /* handle_option */
|
|
NULL, /* unrecognized file */
|
|
NULL, /* list options */
|
|
NULL, /* recognized file */
|
|
NULL, /* find_potential_libraries */
|
|
NULL, /* new_vers_pattern */
|
|
NULL, /* extra_map_file_text */
|
|
${LDEMUL_EMIT_CTF_EARLY-NULL},
|
|
${LDEMUL_EXAMINE_STRTAB_FOR_CTF-NULL}
|
|
};
|
|
EOF
|