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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:
- # CLANG_BIN: path to the clang bin directory
- # Arguments:
- # -i ${file}: input file (required)
- # -o ${file}: output file (required)
- # -d ${file}: deps file (required)
- # --elf | --macho | --pe: format (required)
- OPTSTRING=d:i:o:-:
- usage() {
- cat <<EOF
- Usage: toc.sh [options] -i in-file -o out-file -d deps-file
- Options:
- EOF
- exit 1
- }
- do_elf() {
- ("${CLANG_BIN}/llvm-readelf" -d "${infile}" | grep SONAME || echo "No SONAME for ${infile}") > "${outfile}.tmp"
- "${CLANG_BIN}/llvm-readelf" --dyn-syms "${infile}" | awk '{$2=""; $3=""; print}' >> "${outfile}.tmp"
- cat <<EOF > "${depsfile}"
- ${outfile}: \\
- ${CLANG_BIN}/llvm-readelf \\
- EOF
- }
- do_macho() {
- "${CLANG_BIN}/llvm-objdump" -p "${infile}" | grep LC_ID_DYLIB -A 5 > "${outfile}.tmp"
- "${CLANG_BIN}/llvm-nm" -gP "${infile}" | cut -f1-2 -d" " | (grep -v 'U$' >> "${outfile}.tmp" || true)
- cat <<EOF > "${depsfile}"
- ${outfile}: \\
- ${CLANG_BIN}/llvm-objdump \\
- ${CLANG_BIN}/llvm-nm \\
- EOF
- }
- do_pe() {
- "${CLANG_BIN}/llvm-objdump" -x "${infile}" | grep "^Name" | cut -f3 -d" " > "${outfile}.tmp"
- "${CLANG_BIN}/llvm-nm" -gP "${infile}" | cut -f1-2 -d" " >> "${outfile}.tmp"
- cat <<EOF > "${depsfile}"
- ${outfile}: \\
- ${CLANG_BIN}/llvm-objdump \\
- ${CLANG_BIN}/llvm-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 "${CLANG_BIN:-}" ]; then
- echo "CLANG_BIN environment variable must be set"
- usage
- fi
- rm -f "${outfile}.tmp"
- cat <<EOF > "${depsfile}"
- ${outfile}: \\
- ${CLANG_BIN}/llvm-readelf \\
- EOF
- if [ -n "${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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