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binutils-gdb/ld/emultempl/elf.em
Benjamin Drung b0cc81e870 ld: Support percent-encoded JSON in --package-metadata 
Specifying the compiler flag `-Wl,--package-metadata=<JSON>` will not
work in case the JSON contains a comma, because compiler drivers eat
commas. Example:

```
$ echo "void main() { }" > test.c
$ gcc '-Wl,--package-metadata={"type":"deb","os":"ubuntu"}' test.c
/usr/bin/ld: cannot find "os":"ubuntu"}: No such file or directory
collect2: error: ld returned 1 exit status
```

The quotation marks in the JSON value do not work well with shell nor
make. Specifying the `--package-metadata` linker flag in a `LDFLAGS`
environment variable might loose its quotation marks when it hits the
final compiler call.

So support percent-encoded and %[string] encoded JSON data in the
`--package-metadata` linker flag. Percent-encoding is used because it is
a standard, simple to implement, and does take too many additional
characters. %[string] encoding is supported for having a more readable
encoding.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=32003
Bug-Ubutru: https://bugs.launchpad.net/bugs/2071468
Signed-off-by: Benjamin Drung <benjamin.drung@canonical.com>
2024-11-18 11:38:25 +01:00

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# This shell script emits a C file. -*- C -*-
# It does some substitutions.
test -z "${ELFSIZE}" && ELFSIZE=32
if [ -z "$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! */
/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
Copyright (C) 1991-2024 Free Software Foundation, Inc.
Written by Steve Chamberlain <sac@cygnus.com>
ELF support by Ian Lance Taylor <ian@cygnus.com>
This file is part of the GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#define TARGET_IS_${EMULATION_NAME}
#include "sysdep.h"
#include "bfd.h"
#include "libiberty.h"
#include "getopt.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 "ldlex.h"
#include "ldemul.h"
#include <ldgram.h>
#include "elf-bfd.h"
#include "ldelf.h"
#include "ldelfgen.h"
/* Declare functions used by various EXTRA_EM_FILEs. */
static void gld${EMULATION_NAME}_before_parse (void);
static void gld${EMULATION_NAME}_before_plugin_all_symbols_read
(void);
static void gld${EMULATION_NAME}_after_open (void);
static void gld${EMULATION_NAME}_before_allocation (void);
static void gld${EMULATION_NAME}_after_allocation (void);
EOF
# Import any needed special functions and/or overrides.
#
source_em ${srcdir}/emultempl/elf-generic.em
if test -n "$EXTRA_EM_FILE" ; then
source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
fi
# Functions in this file can be overridden by setting the LDEMUL_* shell
# variables. If the name of the overriding function is the same as is
# defined in this file, then don't output this file's version.
# If a different overriding name is given then output the standard function
# as presumably it is called from the overriding function.
#
if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
fragment <<EOF
static void
gld${EMULATION_NAME}_before_parse (void)
{
ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
input_flags.dynamic = ${DYNAMIC_LINK-true};
config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`;
config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo true ; else echo false ; fi`;
link_info.check_relocs_after_open_input = true;
EOF
if test -n "$COMMONPAGESIZE"; then
fragment <<EOF
link_info.relro = DEFAULT_LD_Z_RELRO;
EOF
fi
fragment <<EOF
link_info.separate_code = DEFAULT_LD_Z_SEPARATE_CODE;
link_info.one_rosegment = DEFAULT_LD_ROSEGMENT;
link_info.warn_execstack = DEFAULT_LD_WARN_EXECSTACK;
link_info.no_warn_rwx_segments = ! DEFAULT_LD_WARN_RWX_SEGMENTS;
link_info.default_execstack = DEFAULT_LD_EXECSTACK;
link_info.error_execstack = DEFAULT_LD_ERROR_EXECSTACK;
link_info.warn_is_error_for_rwx_segments = DEFAULT_LD_ERROR_RWX_SEGMENTS;
}
EOF
fi
fragment <<EOF
/* These variables are used to implement target options */
static char *audit; /* colon (typically) separated list of libs */
static char *depaudit; /* colon (typically) separated list of libs */
EOF
if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
IS_LINUX_TARGET=false
IS_FREEBSD_TARGET=false
case ${target} in
*-*-linux-* | *-*-k*bsd*-* | *-*-gnu*)
IS_LINUX_TARGET=true ;;
*-*-freebsd* | *-*-dragonfly*)
IS_FREEBSD_TARGET=true ;;
esac
IS_LIBPATH=false
if test "x${USE_LIBPATH}" = xyes; then
IS_LIBPATH=true
fi
IS_NATIVE=false
if test "x${NATIVE}" = xyes; then
IS_NATIVE=true
fi
fragment <<EOF
/* This is called before calling plugin 'all symbols read' hook. */
static void
gld${EMULATION_NAME}_before_plugin_all_symbols_read (void)
{
ldelf_before_plugin_all_symbols_read ($IS_LIBPATH, $IS_NATIVE,
$IS_LINUX_TARGET,
$IS_FREEBSD_TARGET,
$ELFSIZE, "$prefix");
}
/* This is called after all the input files have been opened. */
static void
gld${EMULATION_NAME}_after_open (void)
{
ldelf_after_open ($IS_LIBPATH, $IS_NATIVE,
$IS_LINUX_TARGET, $IS_FREEBSD_TARGET, $ELFSIZE, "$prefix");
}
EOF
fi
if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
if test x"${ELF_INTERPRETER_NAME}" = x; then
ELF_INTERPRETER_NAME=NULL
fi
fragment <<EOF
/* This is called after the sections have been attached to output
sections, but before any sizes or addresses have been set. */
static void
gld${EMULATION_NAME}_before_allocation (void)
{
ldelf_before_allocation (audit, depaudit, ${ELF_INTERPRETER_NAME});
}
EOF
fi
if test x"$LDEMUL_AFTER_ALLOCATION" != xgld"$EMULATION_NAME"_after_allocation; then
fragment <<EOF
static void
gld${EMULATION_NAME}_after_allocation (void)
{
int need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
if (need_layout < 0)
einfo (_("%X%P: .eh_frame/.stab edit: %E\n"));
else
ldelf_map_segments (need_layout);
}
EOF
fi
if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
fragment <<EOF
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 ${srcdir}/emultempl/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${EMULATION_NAME}.c
if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
fi
if test -n "$GENERATE_PIE_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdwer >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdwe >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.relro' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdceor >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdceo >> e${EMULATION_NAME}.c
fi
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdcer >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdce >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdco >> e${EMULATION_NAME}.c
fi
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdeor >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdeo >> e${EMULATION_NAME}.c
fi
fi
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xder >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xde >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_pie (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdo >> e${EMULATION_NAME}.c
fi
echo ' ; else if (bfd_link_pie (&link_info)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
fi
if test -n "$GENERATE_SHLIB_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xswer >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xswe >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.relro' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xsceor >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xsceo >> e${EMULATION_NAME}.c
fi
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xscer >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xsce >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xsco >> e${EMULATION_NAME}.c
fi
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.combreloc) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xseor >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xseo >> e${EMULATION_NAME}.c
fi
fi
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xser >> e${EMULATION_NAME}.c
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xse >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (bfd_link_dll (&link_info)' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xso >> e${EMULATION_NAME}.c
fi
echo ' ; else if (bfd_link_dll (&link_info)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
fi
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xwe >> e${EMULATION_NAME}.c
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xwer >> e${EMULATION_NAME}.c
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.relro' >> e${EMULATION_NAME}.c
echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xceor >> e${EMULATION_NAME}.c
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xceo >> e${EMULATION_NAME}.c
fi
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xcer >> e${EMULATION_NAME}.c
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xce >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (link_info.combreloc' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xco >> e${EMULATION_NAME}.c
fi
echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
fi
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xeor >> e${EMULATION_NAME}.c
echo ' ; else if (link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xeo >> e${EMULATION_NAME}.c
fi
echo ' ; else if (link_info.separate_code' >> e${EMULATION_NAME}.c
echo ' && link_info.one_rosegment) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xer >> e${EMULATION_NAME}.c
echo ' ; else if (link_info.separate_code) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xe >> e${EMULATION_NAME}.c
if test -n "$GENERATE_RELRO_SCRIPT" ; then
echo ' ; else if (link_info.relro) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xo >> e${EMULATION_NAME}.c
fi
echo ' ; else return' >> e${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/${EMULATION_NAME}.xbn";
EOF
if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
else
fragment <<EOF
else if (!config.magic_demand_paged)
return "ldscripts/${EMULATION_NAME}.xn";
EOF
fi
if test -n "$GENERATE_PIE_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
fragment <<EOF
else if (bfd_link_pie (&link_info)
&& link_info.combreloc
&& link_info.relro
&& (link_info.flags & DF_BIND_NOW))
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xdwer";
else
return "ldscripts/${EMULATION_NAME}.xdwe";
}
else
return "ldscripts/${EMULATION_NAME}.xdw";
}
EOF
if test -n "$GENERATE_RELRO_SCRIPT" ; then
fragment <<EOF
else if (bfd_link_pie (&link_info)
&& link_info.combreloc
&& link_info.relro)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xdceor";
else
return "ldscripts/${EMULATION_NAME}.xdceo";
}
else
return "ldscripts/${EMULATION_NAME}.xdco";
}
EOF
fi
fragment <<EOF
else if (bfd_link_pie (&link_info)
&& link_info.combreloc)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xdcer";
else
return "ldscripts/${EMULATION_NAME}.xdce";
}
else
return "ldscripts/${EMULATION_NAME}.xdc";
}
EOF
fi
if test -n "$GENERATE_RELRO_SCRIPT" ; then
fragment <<EOF
else if (bfd_link_pie (&link_info)
&& link_info.relro)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xdeor";
else
return "ldscripts/${EMULATION_NAME}.xdeo";
}
else
return "ldscripts/${EMULATION_NAME}.xdo";
}
EOF
fi
fragment <<EOF
else if (bfd_link_pie (&link_info))
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xder";
else
return "ldscripts/${EMULATION_NAME}.xde";
}
else
return "ldscripts/${EMULATION_NAME}.xd";
}
EOF
fi
if test -n "$GENERATE_SHLIB_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
fragment <<EOF
else if (bfd_link_dll (&link_info) && link_info.combreloc
&& link_info.relro && (link_info.flags & DF_BIND_NOW))
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xswer";
else
return "ldscripts/${EMULATION_NAME}.xswe";
}
else
return "ldscripts/${EMULATION_NAME}.xsw";
}
EOF
if test -n "$GENERATE_RELRO_SCRIPT" ; then
fragment <<EOF
else if (bfd_link_dll (&link_info)
&& link_info.combreloc
&& link_info.relro)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xsceor";
else
return "ldscripts/${EMULATION_NAME}.xsceo";
}
else
return "ldscripts/${EMULATION_NAME}.xsco";
}
EOF
fi
fragment <<EOF
else if (bfd_link_dll (&link_info) && link_info.combreloc)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xscer";
else
return "ldscripts/${EMULATION_NAME}.xsce";
}
else
return "ldscripts/${EMULATION_NAME}.xsc";
}
EOF
fi
if test -n "$GENERATE_RELRO_SCRIPT" ; then
fragment <<EOF
else if (bfd_link_dll (&link_info)
&& link_info.relro)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xseor";
else
return "ldscripts/${EMULATION_NAME}.xseo";
}
else
return "ldscripts/${EMULATION_NAME}.xso";
}
EOF
fi
fragment <<EOF
else if (bfd_link_dll (&link_info))
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xser";
else
return "ldscripts/${EMULATION_NAME}.xse";
}
else
return "ldscripts/${EMULATION_NAME}.xs";
}
EOF
fi
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
fragment <<EOF
else if (link_info.combreloc && link_info.relro
&& (link_info.flags & DF_BIND_NOW))
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xwer";
else
return "ldscripts/${EMULATION_NAME}.xwe";
}
else
return "ldscripts/${EMULATION_NAME}.xw";
}
EOF
if test -n "$GENERATE_RELRO_SCRIPT" ; then
fragment <<EOF
else if (link_info.combreloc
&& link_info.relro)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xceor";
else
return "ldscripts/${EMULATION_NAME}.xceo";
}
else
return "ldscripts/${EMULATION_NAME}.xco";
}
EOF
fi
fragment <<EOF
else if (link_info.combreloc)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xcer";
else
return "ldscripts/${EMULATION_NAME}.xce";
}
else
return "ldscripts/${EMULATION_NAME}.xc";
}
EOF
fi
if test -n "$GENERATE_RELRO_SCRIPT" ; then
fragment <<EOF
else if (link_info.relro)
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xeor";
else
return "ldscripts/${EMULATION_NAME}.xeo";
}
else
return "ldscripts/${EMULATION_NAME}.xo";
}
EOF
fi
fragment <<EOF
else
{
if (link_info.separate_code)
{
if (link_info.one_rosegment)
return "ldscripts/${EMULATION_NAME}.xer";
else
return "ldscripts/${EMULATION_NAME}.xe";
}
else
return "ldscripts/${EMULATION_NAME}.x";
}
}
EOF
fi
fi
fragment <<EOF
static void
gld${EMULATION_NAME}_add_options
(int ns, char **shortopts, int nl, struct option **longopts,
int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
{
EOF
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
fragment <<EOF
static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:P:";
EOF
else
fragment <<EOF
static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
EOF
fi
fragment <<EOF
static const struct option xtra_long[] = {
EOF
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
fragment <<EOF
{"audit", required_argument, NULL, OPTION_AUDIT},
{"Bgroup", no_argument, NULL, OPTION_GROUP},
EOF
fi
fragment <<EOF
{"build-id", optional_argument, NULL, OPTION_BUILD_ID},
{"package-metadata", optional_argument, NULL, OPTION_PACKAGE_METADATA},
{"compress-debug-sections", required_argument, NULL, OPTION_COMPRESS_DEBUG},
{"rosegment", no_argument, NULL, OPTION_ROSEGMENT},
{"no-rosegment", no_argument, NULL, OPTION_NO_ROSEGMENT},
EOF
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
fragment <<EOF
{"depaudit", required_argument, NULL, 'P'},
{"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
{"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
{"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
{"no-eh-frame-hdr", no_argument, NULL, OPTION_NO_EH_FRAME_HDR},
{"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
{"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
EOF
fi
if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
fragment <<EOF
$PARSE_AND_LIST_LONGOPTS
EOF
fi
fragment <<EOF
{NULL, no_argument, NULL, 0}
};
*shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
*longopts = (struct option *)
xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
}
#define DEFAULT_BUILD_ID_STYLE "sha1"
static bool
gld${EMULATION_NAME}_handle_option (int optc)
{
switch (optc)
{
default:
return false;
case OPTION_BUILD_ID:
free ((char *) ldelf_emit_note_gnu_build_id);
ldelf_emit_note_gnu_build_id = NULL;
if (optarg == NULL)
optarg = DEFAULT_BUILD_ID_STYLE;
if (strcmp (optarg, "none"))
ldelf_emit_note_gnu_build_id = xstrdup (optarg);
break;
case OPTION_PACKAGE_METADATA:
free ((char *) ldelf_emit_note_fdo_package_metadata);
ldelf_emit_note_fdo_package_metadata = NULL;
if (optarg != NULL)
{
size_t len = strlen (optarg);
if (len > 0)
{
char *package_metadata = xmalloc (len + 1);
percent_decode (optarg, package_metadata);
ldelf_emit_note_fdo_package_metadata = package_metadata;
}
}
break;
case OPTION_COMPRESS_DEBUG:
config.compress_debug = bfd_get_compression_algorithm (optarg);
if (strcasecmp (optarg, "zstd") == 0)
{
#ifndef HAVE_ZSTD
if (config.compress_debug == COMPRESS_DEBUG_ZSTD)
einfo (_ ("%F%P: --compress-debug-sections=zstd: ld is not built "
"with zstd support\n"));
#endif
}
if (config.compress_debug == COMPRESS_UNKNOWN)
einfo (_("%F%P: invalid --compress-debug-sections option: \`%s'\n"),
optarg);
break;
case OPTION_ROSEGMENT:
link_info.one_rosegment = true;
break;
case OPTION_NO_ROSEGMENT:
link_info.one_rosegment = false;
break;
EOF
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
fragment <<EOF
case OPTION_AUDIT:
ldelf_append_to_separated_string (&audit, optarg);
break;
case 'P':
ldelf_append_to_separated_string (&depaudit, optarg);
break;
case OPTION_DISABLE_NEW_DTAGS:
link_info.new_dtags = false;
break;
case OPTION_ENABLE_NEW_DTAGS:
link_info.new_dtags = true;
break;
case OPTION_EH_FRAME_HDR:
link_info.eh_frame_hdr_type = DWARF2_EH_HDR;
break;
case OPTION_NO_EH_FRAME_HDR:
link_info.eh_frame_hdr_type = 0;
break;
case OPTION_GROUP:
link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
/* Groups must be self-contained. */
link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
break;
case OPTION_EXCLUDE_LIBS:
add_excluded_libs (optarg);
break;
case OPTION_HASH_STYLE:
link_info.emit_hash = false;
link_info.emit_gnu_hash = false;
if (strcmp (optarg, "sysv") == 0)
link_info.emit_hash = true;
else if (strcmp (optarg, "gnu") == 0)
link_info.emit_gnu_hash = true;
else if (strcmp (optarg, "both") == 0)
{
link_info.emit_hash = true;
link_info.emit_gnu_hash = true;
}
else
einfo (_("%F%P: invalid hash style \`%s'\n"), optarg);
break;
EOF
fi
fragment <<EOF
case 'z':
if (strcmp (optarg, "defs") == 0)
link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
else if (strcmp (optarg, "undefs") == 0)
link_info.unresolved_syms_in_objects = RM_IGNORE;
else if (strcmp (optarg, "muldefs") == 0)
link_info.allow_multiple_definition = true;
else if (startswith (optarg, "max-page-size="))
{
char *end;
link_info.maxpagesize = strtoul (optarg + 14, &end, 0);
if (*end
|| (link_info.maxpagesize & (link_info.maxpagesize - 1)) != 0)
einfo (_("%F%P: invalid maximum page size \`%s'\n"),
optarg + 14);
link_info.maxpagesize_is_set = true;
}
else if (startswith (optarg, "common-page-size="))
{
char *end;
link_info.commonpagesize = strtoul (optarg + 17, &end, 0);
if (*end
|| (link_info.commonpagesize & (link_info.commonpagesize - 1)) != 0)
einfo (_("%F%P: invalid common page size \`%s'\n"),
optarg + 17);
link_info.commonpagesize_is_set = true;
}
else if (startswith (optarg, "stack-size="))
{
char *end;
link_info.stacksize = strtoul (optarg + 11, &end, 0);
if (*end || link_info.stacksize < 0)
einfo (_("%F%P: invalid stack size \`%s'\n"), optarg + 11);
if (!link_info.stacksize)
/* Use -1 for explicit no-stack, because zero means
'default'. */
link_info.stacksize = -1;
}
else if (strcmp (optarg, "execstack") == 0)
{
link_info.execstack = true;
link_info.noexecstack = false;
}
else if (strcmp (optarg, "noexecstack") == 0)
{
link_info.noexecstack = true;
link_info.execstack = false;
}
else if (strcmp (optarg, "unique-symbol") == 0)
link_info.unique_symbol = true;
else if (strcmp (optarg, "nounique-symbol") == 0)
link_info.unique_symbol = false;
else if (strcmp (optarg, "globalaudit") == 0)
{
link_info.flags_1 |= DF_1_GLOBAUDIT;
}
else if (startswith (optarg, "start-stop-gc"))
link_info.start_stop_gc = true;
else if (startswith (optarg, "nostart-stop-gc"))
link_info.start_stop_gc = false;
else if (startswith (optarg, "start-stop-visibility="))
{
if (strcmp (optarg, "start-stop-visibility=default") == 0)
link_info.start_stop_visibility = STV_DEFAULT;
else if (strcmp (optarg, "start-stop-visibility=internal") == 0)
link_info.start_stop_visibility = STV_INTERNAL;
else if (strcmp (optarg, "start-stop-visibility=hidden") == 0)
link_info.start_stop_visibility = STV_HIDDEN;
else if (strcmp (optarg, "start-stop-visibility=protected") == 0)
link_info.start_stop_visibility = STV_PROTECTED;
else
einfo (_("%F%P: invalid visibility in \`-z %s'; "
"must be default, internal, hidden, or protected"),
optarg);
}
else if (strcmp (optarg, "sectionheader") == 0)
config.no_section_header = false;
else if (strcmp (optarg, "nosectionheader") == 0)
config.no_section_header = true;
EOF
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
fragment <<EOF
else if (strcmp (optarg, "global") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_GLOBAL;
else if (strcmp (optarg, "initfirst") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
else if (strcmp (optarg, "interpose") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
else if (strcmp (optarg, "loadfltr") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
else if (strcmp (optarg, "nodefaultlib") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
else if (strcmp (optarg, "nodelete") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
else if (strcmp (optarg, "nodlopen") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
else if (strcmp (optarg, "nodump") == 0)
link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
else if (strcmp (optarg, "now") == 0)
{
link_info.flags |= (bfd_vma) DF_BIND_NOW;
link_info.flags_1 |= (bfd_vma) DF_1_NOW;
}
else if (strcmp (optarg, "lazy") == 0)
{
link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
}
else if (strcmp (optarg, "origin") == 0)
{
link_info.flags |= (bfd_vma) DF_ORIGIN;
link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
}
else if (strcmp (optarg, "unique") == 0)
link_info.gnu_flags_1 |= (bfd_vma) DF_GNU_1_UNIQUE;
else if (strcmp (optarg, "nounique") == 0)
link_info.gnu_flags_1 &= ~(bfd_vma) DF_GNU_1_UNIQUE;
else if (strcmp (optarg, "combreloc") == 0)
link_info.combreloc = true;
else if (strcmp (optarg, "nocombreloc") == 0)
link_info.combreloc = false;
else if (strcmp (optarg, "nocopyreloc") == 0)
link_info.nocopyreloc = true;
EOF
if test -n "$COMMONPAGESIZE"; then
fragment <<EOF
else if (strcmp (optarg, "relro") == 0)
link_info.relro = true;
else if (strcmp (optarg, "norelro") == 0)
link_info.relro = false;
EOF
fi
fi
fragment <<EOF
else if (strcmp (optarg, "separate-code") == 0)
link_info.separate_code = true;
else if (strcmp (optarg, "noseparate-code") == 0)
link_info.separate_code = false;
else if (strcmp (optarg, "common") == 0)
link_info.elf_stt_common = elf_stt_common;
else if (strcmp (optarg, "nocommon") == 0)
link_info.elf_stt_common = no_elf_stt_common;
else if (strcmp (optarg, "text") == 0)
link_info.textrel_check = textrel_check_error;
else if (strcmp (optarg, "notext") == 0)
link_info.textrel_check = textrel_check_none;
else if (strcmp (optarg, "textoff") == 0)
link_info.textrel_check = textrel_check_none;
EOF
if test -n "$PARSE_AND_LIST_ARGS_CASE_Z" ; then
fragment <<EOF
$PARSE_AND_LIST_ARGS_CASE_Z
EOF
fi
fragment <<EOF
else
queue_unknown_cmdline_warning ("-z %s", optarg);
break;
EOF
if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
fragment <<EOF
$PARSE_AND_LIST_ARGS_CASES
EOF
fi
fragment <<EOF
}
return true;
}
EOF
if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
gld_list_options="gld${EMULATION_NAME}_list_options"
if test -n "$PARSE_AND_LIST_OPTIONS"; then
fragment <<EOF
static void
gld${EMULATION_NAME}_list_options (FILE * file)
{
EOF
if test -n "$PARSE_AND_LIST_OPTIONS" ; then
fragment <<EOF
$PARSE_AND_LIST_OPTIONS
EOF
fi
fragment <<EOF
}
EOF
else
gld_list_options="NULL"
fi
if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
fragment <<EOF
$PARSE_AND_LIST_EPILOGUE
EOF
fi
fi
LDEMUL_AFTER_PARSE=${LDEMUL_AFTER_PARSE-ldelf_after_parse}
LDEMUL_BEFORE_PLUGIN_ALL_SYMBOLS_READ=${LDEMUL_BEFORE_PLUGIN_ALL_SYMBOLS_READ-gld${EMULATION_NAME}_before_plugin_all_symbols_read}
LDEMUL_AFTER_OPEN=${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open}
LDEMUL_BEFORE_PLACE_ORPHANS=${LDEMUL_BEFORE_PLACE_ORPHANS-ldelf_before_place_orphans}
LDEMUL_AFTER_ALLOCATION=${LDEMUL_AFTER_ALLOCATION-gld${EMULATION_NAME}_after_allocation}
LDEMUL_SET_OUTPUT_ARCH=${LDEMUL_SET_OUTPUT_ARCH-ldelf_set_output_arch}
LDEMUL_BEFORE_ALLOCATION=${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation}
LDEMUL_OPEN_DYNAMIC_ARCHIVE=${LDEMUL_OPEN_DYNAMIC_ARCHIVE-ldelf_open_dynamic_archive}
LDEMUL_PLACE_ORPHAN=${LDEMUL_PLACE_ORPHAN-ldelf_place_orphan}
LDEMUL_ADD_OPTIONS=gld${EMULATION_NAME}_add_options
LDEMUL_HANDLE_OPTION=gld${EMULATION_NAME}_handle_option
LDEMUL_LIST_OPTIONS=${LDEMUL_LIST_OPTIONS-${gld_list_options}}
LDEMUL_RECOGNIZED_FILE=${LDEMUL_RECOGNIZED_FILE-ldelf_load_symbols}
source_em ${srcdir}/emultempl/emulation.em
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