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sys/tools/amd64_ia32_vdso.sh
- This file was added.
#!/bin/sh | |||||
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
# | |||||
# Copyright (c) 2021 The FreeBSD Foundation | |||||
# All rights reserved. | |||||
# | |||||
# This software was developed by Konstantin Belousov <kib@FreeBSD.org> | |||||
# under sponsorship from the FreeBSD Foundation. | |||||
# | |||||
# Redistribution and use in source and binary forms, with or without | |||||
# modification, are permitted provided that the following conditions | |||||
# are met: | |||||
# 1. Redistributions of source code must retain the above copyright | |||||
# notice, this list of conditions and the following disclaimer. | |||||
# 2. Redistributions in binary form must reproduce the above copyright | |||||
# notice, this list of conditions and the following disclaimer in the | |||||
# documentation and/or other materials provided with the distribution. | |||||
# | |||||
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
# SUCH DAMAGE. | |||||
set -e | |||||
${CC} -x assembler-with-cpp -DLOCORE -fPIC -nostdinc -c -m32 \ | |||||
-o ia32_sigtramp.pico -I. -I"${S}" -include opt_global.h \ | |||||
"${S}"/amd64/ia32/ia32_sigtramp.S | |||||
${LD} --shared -Bsymbolic -soname="elf-vdso32.so.1" \ | |||||
-T "${S}"/conf/vdso_amd64_ia32.ldscript \ | |||||
--eh-frame-hdr --no-undefined -z rodynamic -z norelro -nmagic \ | |||||
--hash-style=sysv --fatal-warnings --strip-all \ | |||||
-o elf-vdso32.so.1 ia32_sigtramp.pico | |||||
if [ "$(wc -c elf-vdso32.so.1 | ${AWK} '{print $1}')" -gt 2048 ] | |||||
then | |||||
echo "elf-vdso32.so.1 too large" 1>&2 | |||||
exit 1 | |||||
fi | |||||
if [ -n "$(${ELFDUMP} -d elf-vdso32.so.1 | \ | |||||
${AWK} '/DT_REL.*SZ/{print "RELOCS"}')" ] | |||||
then | |||||
echo "elf-vdso32.so.1 contains runtime relocations" 1>&2 | |||||
exit 1 | |||||
fi | |||||
${CC} -x assembler-with-cpp -DLOCORE -fPIC -nostdinc -c \ | |||||
-o elf-vdso32.so.o -I. -I"${S}" -include opt_global.h \ | |||||
-DVDSO_NAME=elf_vdso32_so_1 -DVDSO_FILE=elf-vdso32.so.1 \ | |||||
"${S}"/tools/vdso_wrap.S | |||||
${NM} -D elf-vdso32.so.1 | ${AWK} \ | |||||
'/__vdso_ia32_sigcode/{printf "#define VDSO_IA32_SIGCODE_OFFSET 0x%s\n",$1} | |||||
/__vdso_freebsd4_ia32_sigcode/{printf "#define VDSO_FREEBSD4_IA32_SIGCODE_OFFSET 0x%s\n",$1} | |||||
/__vdso_ia32_osigcode/{printf "#define VDSO_IA32_OSIGCODE_OFFSET 0x%s\n",$1} | |||||
/__vdso_lcall_tramp/{printf "#define VDSO_LCALL_TRAMP_OFFSET 0x%s\n",$1}' \ | |||||
>vdso_ia32_offsets.h |