csdr/detect_params.sh

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#!/bin/sh
# This software is part of libcsdr, a set of simple DSP routines for
# Software Defined Radio.
#
# Copyright (c) 2014, Andras Retzler <randras@sdr.hu>
# Copyright (c) 2019, MeFisto94
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the copyright holder nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# This file will try to detect the correct GCC optimization parameters, especially when running on ARM Platforms such as the Raspberry Pi
# Desktop Processors
if grep -q sse /proc/cpuinfo; then
if grep -q sse /proc/cpuinfo; then
PARAMS_SSE="$PARAMS_SSE-msse"
fi
if grep -q sse2 /proc/cpuinfo; then
PARAMS_SSE="$PARAMS_SSE -msse2"
fi
if grep -q sse3 /proc/cpuinfo; then
PARAMS_SSE="$PARAMS_SSE -msse3"
fi
if grep -q sse4a /proc/cpuinfo; then
PARAMS_SSE="$PARAMS_SSE -msse4a"
fi
if grep -q sse4_1 /proc/cpuinfo; then
PARAMS_SSE="$PARAMS_SSE -msse4.1"
fi
# TODO: Is this "-msse4" only for sse4_2 intended?
if grep -q sse4_2 /proc/cpuinfo; then
PARAMS_SSE="$PARAMS_SSE -msse4.2 -msse4"
fi
echo "$PARAMS_SSE -mfpmath=sse"
return 0
else
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ARCH=$(uname -m)
# Detect Raspberry Pi
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if grep -q 'Raspberry' /proc/device-tree/model; then
if [ "$ARCH" = "aarch64" ]; then # Probably RPi 3+ on 64bit
# Float ABI is always hard on AARCH64. TODO: Does RPi 1 or 2 also have aarch64?
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PARAMS_PI="-mcpu=cortex-a53 -mtune=cortex-a53"
else # note -mcpu replaces -march
# See https://gist.github.com/fm4dd/c663217935dc17f0fc73c9c81b0aa845
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if grep -q 3 /proc/device-tree/model; then
PARAMS_PI="-mcpu=cortex-a53 -mfloat-abi=hard -mfpu=neon-fp-armv8 -mneon-for-64bits"
elif grep -q 2 /proc/device-tree/model; then
PARAMS_PI="-mcpu=cortex-a7 -mfloat-abi=hard -mfpu=neon-vfpv4"
elif grep -q 1 /proc/device-tree/model; then
PARAMS_PI="-mcpu=arm1176jzf-s -mfloat-abi=hard -mfpu=vfp"
fi
fi
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PARAMS_ARM="$PARAMS_PI -funsafe-math-optimizations -Wformat=0"
else # Generic ARM Device
# Most likely mtune is incorrect here
PARAMS_ARM = "-mfloat-abi=hard -march=`uname -m` -mtune=cortex-a8 -mfpu=neon -mvectorize-with-neon-quad -funsafe-math-optimizations -Wformat=0 -DNEON_OPTS"
fi
echo $PARAMS_ARM
return 0
fi