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- #!/bin/sh
- #
- # This file is part of mbed TLS (https://tls.mbed.org)
- #
- # Copyright (c) 2015-2016, ARM Limited, All Rights Reserved
- #
- # Purpose
- #
- # This script determines ROM size (or code size) for the standard mbed TLS
- # configurations, when built for a Cortex M3/M4 target.
- #
- # Configurations included:
- # default include/mbedtls/config.h
- # thread configs/config-thread.h
- # suite-b configs/config-suite-b.h
- # psk configs/config-ccm-psk-tls1_2.h
- #
- # Usage: footprint.sh
- #
- set -eu
- CONFIG_H='include/mbedtls/config.h'
- if [ -r $CONFIG_H ]; then :; else
- echo "$CONFIG_H not found" >&2
- echo "This script needs to be run from the root of" >&2
- echo "a git checkout or uncompressed tarball" >&2
- exit 1
- fi
- if grep -i cmake Makefile >/dev/null; then
- echo "Not compatible with CMake" >&2
- exit 1
- fi
- if which arm-none-eabi-gcc >/dev/null 2>&1; then :; else
- echo "You need the ARM-GCC toolchain in your path" >&2
- echo "See https://launchpad.net/gcc-arm-embedded/" >&2
- exit 1
- fi
- ARMGCC_FLAGS='-Os -march=armv7-m -mthumb'
- OUTFILE='00-footprint-summary.txt'
- log()
- {
- echo "$@"
- echo "$@" >> "$OUTFILE"
- }
- doit()
- {
- NAME="$1"
- FILE="$2"
- log ""
- log "$NAME ($FILE):"
- cp $CONFIG_H ${CONFIG_H}.bak
- if [ "$FILE" != $CONFIG_H ]; then
- cp "$FILE" $CONFIG_H
- fi
- {
- scripts/config.pl unset MBEDTLS_NET_C || true
- scripts/config.pl unset MBEDTLS_TIMING_C || true
- scripts/config.pl unset MBEDTLS_FS_IO || true
- scripts/config.pl --force set MBEDTLS_NO_PLATFORM_ENTROPY || true
- } >/dev/null 2>&1
- make clean >/dev/null
- CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld \
- CFLAGS="$ARMGCC_FLAGS" make lib >/dev/null
- OUT="size-${NAME}.txt"
- arm-none-eabi-size -t library/libmbed*.a > "$OUT"
- log "$( head -n1 "$OUT" )"
- log "$( tail -n1 "$OUT" )"
- cp ${CONFIG_H}.bak $CONFIG_H
- }
- # truncate the file just this time
- echo "(generated by $0)" > "$OUTFILE"
- echo "" >> "$OUTFILE"
- log "Footprint of standard configurations (minus net_sockets.c, timing.c, fs_io)"
- log "for bare-metal ARM Cortex-M3/M4 microcontrollers."
- VERSION_H="include/mbedtls/version.h"
- MBEDTLS_VERSION=$( sed -n 's/.*VERSION_STRING *"\(.*\)"/\1/p' $VERSION_H )
- if git rev-parse HEAD >/dev/null; then
- GIT_HEAD=$( git rev-parse HEAD | head -c 10 )
- GIT_VERSION=" (git head: $GIT_HEAD)"
- else
- GIT_VERSION=""
- fi
- log ""
- log "mbed TLS $MBEDTLS_VERSION$GIT_VERSION"
- log "$( arm-none-eabi-gcc --version | head -n1 )"
- log "CFLAGS=$ARMGCC_FLAGS"
- doit default include/mbedtls/config.h
- doit thread configs/config-thread.h
- doit suite-b configs/config-suite-b.h
- doit psk configs/config-ccm-psk-tls1_2.h
- zip mbedtls-footprint.zip "$OUTFILE" size-*.txt >/dev/null
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