1#!/bin/bash
2
3# Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without modification,
6# are permitted provided that the following conditions are met:
7#
8# 1. Redistributions of source code must retain the above copyright notice, this list of
9#    conditions and the following disclaimer.
10#
11# 2. Redistributions in binary form must reproduce the above copyright notice, this list
12#    of conditions and the following disclaimer in the documentation and/or other materials
13#    provided with the distribution.
14#
15# 3. Neither the name of the copyright holder nor the names of its contributors may be used
16#    to endorse or promote products derived from this software without specific prior written
17#    permission.
18#
19# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31# Description: The script is used to calculate the memory size that the specified shared library
32# will occupy when loading to the RAM.
33
34READELF=readelf
35RM=rm
36SIZE=0x0
37SIZE_ALL=0x0
38SIZE_MAX=0
39TMP_FILE=tmp.txt
40
41if [ $# -lt 1 ]; then
42    echo "Usage: ./so_parse lib.so"
43    exit 1
44fi
45
46parse_line()
47{
48    MEM_SIZE=$(echo $1 | awk '{print $6}')
49    echo ${MEM_SIZE}
50}
51
52${READELF} -l $1 | while read line; do
53    HEAD_STRING=$(echo ${line} | awk '{print $1}')
54    if [[ "${HEAD_STRING}" == *"LOAD"* ]]; then
55        SIZE=`parse_line "${line}"`
56        SIZE=`echo ${SIZE}`
57        SIZE_ALL=$((SIZE_ALL+SIZE))
58    fi
59    echo ${SIZE_ALL} >> ${TMP_FILE}
60done
61
62NEED_SIZE=`tail -n 1 ${TMP_FILE}`
63echo "${NEED_SIZE} bytes memory to reserve for $1!"
64${RM} -f ${TMP_FILE}
65
66