1#!/bin/sh 2# 3# Copyright The Mbed TLS Contributors 4# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later 5# 6# This file is provided under the Apache License 2.0, or the 7# GNU General Public License v2.0 or later. 8# 9# ********** 10# Apache License 2.0: 11# 12# Licensed under the Apache License, Version 2.0 (the "License"); you may 13# not use this file except in compliance with the License. 14# You may obtain a copy of the License at 15# 16# http://www.apache.org/licenses/LICENSE-2.0 17# 18# Unless required by applicable law or agreed to in writing, software 19# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 20# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 21# See the License for the specific language governing permissions and 22# limitations under the License. 23# 24# ********** 25# 26# ********** 27# GNU General Public License v2.0 or later: 28# 29# This program is free software; you can redistribute it and/or modify 30# it under the terms of the GNU General Public License as published by 31# the Free Software Foundation; either version 2 of the License, or 32# (at your option) any later version. 33# 34# This program is distributed in the hope that it will be useful, 35# but WITHOUT ANY WARRANTY; without even the implied warranty of 36# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 37# GNU General Public License for more details. 38# 39# You should have received a copy of the GNU General Public License along 40# with this program; if not, write to the Free Software Foundation, Inc., 41# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 42# 43# ********** 44# 45# Purpose 46# 47# This script determines ROM size (or code size) for the standard mbed TLS 48# configurations, when built for a Cortex M3/M4 target. 49# 50# Configurations included: 51# default include/mbedtls/config.h 52# thread configs/config-thread.h 53# suite-b configs/config-suite-b.h 54# psk configs/config-ccm-psk-tls1_2.h 55# 56# Usage: footprint.sh 57# 58set -eu 59 60CONFIG_H='include/mbedtls/config.h' 61 62if [ -r $CONFIG_H ]; then :; else 63 echo "$CONFIG_H not found" >&2 64 echo "This script needs to be run from the root of" >&2 65 echo "a git checkout or uncompressed tarball" >&2 66 exit 1 67fi 68 69if grep -i cmake Makefile >/dev/null; then 70 echo "Not compatible with CMake" >&2 71 exit 1 72fi 73 74if which arm-none-eabi-gcc >/dev/null 2>&1; then :; else 75 echo "You need the ARM-GCC toolchain in your path" >&2 76 echo "See https://launchpad.net/gcc-arm-embedded/" >&2 77 exit 1 78fi 79 80ARMGCC_FLAGS='-Os -march=armv7-m -mthumb' 81OUTFILE='00-footprint-summary.txt' 82 83log() 84{ 85 echo "$@" 86 echo "$@" >> "$OUTFILE" 87} 88 89doit() 90{ 91 NAME="$1" 92 FILE="$2" 93 94 log "" 95 log "$NAME ($FILE):" 96 97 cp $CONFIG_H ${CONFIG_H}.bak 98 if [ "$FILE" != $CONFIG_H ]; then 99 cp "$FILE" $CONFIG_H 100 fi 101 102 { 103 scripts/config.pl unset MBEDTLS_NET_C || true 104 scripts/config.pl unset MBEDTLS_TIMING_C || true 105 scripts/config.pl unset MBEDTLS_FS_IO || true 106 scripts/config.pl --force set MBEDTLS_NO_PLATFORM_ENTROPY || true 107 } >/dev/null 2>&1 108 109 make clean >/dev/null 110 CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld \ 111 CFLAGS="$ARMGCC_FLAGS" make lib >/dev/null 112 113 OUT="size-${NAME}.txt" 114 arm-none-eabi-size -t library/libmbed*.a > "$OUT" 115 log "$( head -n1 "$OUT" )" 116 log "$( tail -n1 "$OUT" )" 117 118 cp ${CONFIG_H}.bak $CONFIG_H 119} 120 121# truncate the file just this time 122echo "(generated by $0)" > "$OUTFILE" 123echo "" >> "$OUTFILE" 124 125log "Footprint of standard configurations (minus net_sockets.c, timing.c, fs_io)" 126log "for bare-metal ARM Cortex-M3/M4 microcontrollers." 127 128VERSION_H="include/mbedtls/version.h" 129MBEDTLS_VERSION=$( sed -n 's/.*VERSION_STRING *"\(.*\)"/\1/p' $VERSION_H ) 130if git rev-parse HEAD >/dev/null; then 131 GIT_HEAD=$( git rev-parse HEAD | head -c 10 ) 132 GIT_VERSION=" (git head: $GIT_HEAD)" 133else 134 GIT_VERSION="" 135fi 136 137log "" 138log "mbed TLS $MBEDTLS_VERSION$GIT_VERSION" 139log "$( arm-none-eabi-gcc --version | head -n1 )" 140log "CFLAGS=$ARMGCC_FLAGS" 141 142doit default include/mbedtls/config.h 143doit thread configs/config-thread.h 144doit suite-b configs/config-suite-b.h 145doit psk configs/config-ccm-psk-tls1_2.h 146 147zip mbedtls-footprint.zip "$OUTFILE" size-*.txt >/dev/null 148