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#!/bin/bash -eu
# Copyright 2017 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Script to handle generating a .toc file from a .so file
# Inputs:
# Environment:
# CROSS_COMPILE: prefix added to readelf tool
# Arguments:
# -i ${file}: input file (required)
# -o ${file}: output file (required)
# -d ${file}: deps file (required)
# --elf | --macho | --pe: format (required)
OPTSTRING=d:i:o:-:
usage() {
cat <<EOF
Usage: toc.sh [options] -i in-file -o out-file -d deps-file
Options:
EOF
exit 1
}
do_elf() {
("${CROSS_COMPILE}readelf" -d "${infile}" | grep SONAME || echo "No SONAME for ${infile}") > "${outfile}.tmp"
"${CROSS_COMPILE}readelf" --dyn-syms "${infile}" | awk '{$2=""; $3=""; print}' >> "${outfile}.tmp"
cat <<EOF > "${depsfile}"
${outfile}: \\
${CROSS_COMPILE}readelf \\
EOF
}
do_macho() {
"${CROSS_COMPILE}/otool" -l "${infile}" | grep LC_ID_DYLIB -A 5 > "${outfile}.tmp"
"${CROSS_COMPILE}/nm" -gP "${infile}" | cut -f1-2 -d" " | (grep -v 'U$' >> "${outfile}.tmp" || true)
cat <<EOF > "${depsfile}"
${outfile}: \\
${CROSS_COMPILE}/otool \\
${CROSS_COMPILE}/nm \\
EOF
}
do_pe() {
"${CROSS_COMPILE}objdump" -x "${infile}" | grep "^Name" | cut -f3 -d" " > "${outfile}.tmp"
"${CROSS_COMPILE}nm" -g -f p "${infile}" | cut -f1-2 -d" " >> "${outfile}.tmp"
cat <<EOF > "${depsfile}"
${outfile}: \\
${CROSS_COMPILE}objdump \\
${CROSS_COMPILE}nm \\
EOF
}
while getopts $OPTSTRING opt; do
case "$opt" in
d) depsfile="${OPTARG}" ;;
i) infile="${OPTARG}" ;;
o) outfile="${OPTARG}" ;;
-)
case "${OPTARG}" in
elf) elf=1 ;;
macho) macho=1 ;;
pe) pe=1 ;;
*) echo "Unknown option --${OPTARG}"; usage ;;
esac;;
?) usage ;;
*) echo "'${opt}' '${OPTARG}'"
esac
done
if [ -z "${infile:-}" ]; then
echo "-i argument is required"
usage
fi
if [ -z "${outfile:-}" ]; then
echo "-o argument is required"
usage
fi
if [ -z "${depsfile:-}" ]; then
echo "-d argument is required"
usage
fi
if [ -z "${CROSS_COMPILE:-}" ]; then
echo "CROSS_COMPILE environment variable must be set"
usage
fi
rm -f "${outfile}.tmp"
cat <<EOF > "${depsfile}"
${outfile}: \\
${CROSS_COMPILE}readelf \\
EOF
if [ -n "${elf:-}" ]; then
do_elf
elif [ -n "${macho:-}" ]; then
do_macho
elif [ -n "${pe:-}" ]; then
do_pe
else
echo "--elf, --macho or --pe is required"; usage
fi
if cmp "${outfile}" "${outfile}.tmp" > /dev/null 2> /dev/null; then
rm -f "${outfile}.tmp"
else
mv -f "${outfile}.tmp" "${outfile}"
fi
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