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