#!/bin/sh -e
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#
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# Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
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# Copyright (c) 2015-2018 The strace developers.
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# All rights reserved.
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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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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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export LC_ALL=C
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MPERS_AWK="${0%/*}/mpers.awk"
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ARCH_FLAG=$1
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CC_ARCH_FLAG=$2
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PARSER_FILE=$3
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READELF="${READELF:-readelf}"
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CC="${CC-gcc}"
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CFLAGS="$CFLAGS -gdwarf-2 -c"
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CPP="${CPP-$CC -E}"
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CPPFLAGS="$CPPFLAGS -MM -MG"
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VAR_NAME='mpers_target_var'
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BITS_DIR="mpers-${ARCH_FLAG}"
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mkdir -p ${BITS_DIR}
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set -- $(sed -r -n \
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's/^#[[:space:]]*include[[:space:]]+DEF_MPERS_TYPE\(([^)[:space:]]*)\)$/\1/p' \
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"${PARSER_FILE}")
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for m_type; do
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f_h="${BITS_DIR}/${m_type}.h"
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f_c="${BITS_DIR}/${m_type}.c"
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f_i="${BITS_DIR}/${m_type}.i"
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f_o="${BITS_DIR}/${m_type}.o"
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f_d1="${BITS_DIR}/${m_type}.d1"
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f_d2="${BITS_DIR}/${m_type}.d2"
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sed -e '
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/DEF_MPERS_TYPE('"${m_type}"')$/n
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/DEF_MPERS_TYPE/d
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/^[[:space:]]*#[[:space:]]*include[[:space:]]*"xlat\//d
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/^#[[:space:]]*include[[:space:]][[:space:]]*MPERS_DEFS$/ {s//'"${m_type} ${VAR_NAME}"';/;q}
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' "${PARSER_FILE}" > "${f_c}"
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$CPP $CPPFLAGS "${f_c}" > "${f_i}"
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grep -F -q "${m_type}.h" "${f_i}" ||
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continue
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sed -i -e '/DEF_MPERS_TYPE/d' "${f_c}"
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$CC $CFLAGS $CC_ARCH_FLAG "${f_c}" -o "${f_o}"
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$READELF --debug-dump=info "${f_o}" > "${f_d1}"
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sed -r -n '
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/^[[:space:]]*<1>/,/^[[:space:]]*<1><[^>]+>: Abbrev Number: 0/!d
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/^[[:space:]]*<[^>]*><[^>]*>: Abbrev Number: 0/d
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s/^[[:space:]]*<[[:xdigit:]]+>[[:space:]]+//
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s/^[[:space:]]*((<[[:xdigit:]]+>){2}):[[:space:]]+/\1\n/
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s/[[:space:]]+$//
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p' "${f_d1}" > "${f_d2}"
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gawk -v VAR_NAME="$VAR_NAME" -v ARCH_FLAG="${ARCH_FLAG}" \
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-f "$MPERS_AWK" "${f_d2}" > "${f_h}"
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done
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