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#!/bin/sh
#
# Returns properties of the native system.
# best architecture as supported by the CPU
# filename of the best binary uploaded as an artifact during CI
#
# Check if all the given flags are present in the CPU flags list
check_flags() {
for flag; do
printf '%s\n' "$flags" | grep -q -w "$flag" || return 1
done
}
# Set the CPU flags list
# remove underscores and points from flags, e.g. gcc uses avx512vnni, while some cpuinfo can have avx512_vnni, some systems use sse4_1 others sse4.1
get_flags() {
flags=$(awk '/^flags[ \t]*:|^Features[ \t]*:/{gsub(/^flags[ \t]*:[ \t]*|^Features[ \t]*:[ \t]*|[_.]/, ""); line=$0} END{print line}' /proc/cpuinfo)
}
# Check for gcc march "znver1" or "znver2" https://en.wikichip.org/wiki/amd/cpuid
check_znver_1_2() {
vendor_id=$(awk '/^vendor_id/{print $3; exit}' /proc/cpuinfo)
cpu_family=$(awk '/^cpu family/{print $4; exit}' /proc/cpuinfo)
[ "$vendor_id" = "AuthenticAMD" ] && [ "$cpu_family" = "23" ] && znver_1_2=true
}
# Set the file CPU loongarch64 architecture
set_arch_loongarch64() {
if check_flags 'lasx'; then
true_arch='loongarch64-lasx'
elif check_flags 'lsx'; then
true_arch='lonngarch64-lsx'
else
true_arch='loongarch64'
fi
}
# Set the file CPU x86_64 architecture
set_arch_x86_64() {
if check_flags 'avx512vnni' 'avx512dq' 'avx512f' 'avx512bw' 'avx512vl'; then
true_arch='x86-64-vnni256'
elif check_flags 'avx512f' 'avx512bw'; then
true_arch='x86-64-avx512'
elif [ -z "${znver_1_2+1}" ] && check_flags 'bmi2'; then
true_arch='x86-64-bmi2'
elif check_flags 'avx2'; then
true_arch='x86-64-avx2'
elif check_flags 'sse41' && check_flags 'popcnt'; then
true_arch='x86-64-sse41-popcnt'
else
true_arch='x86-64'
fi
}
set_arch_ppc_64() {
if $(grep -q -w "altivec" /proc/cpuinfo); then
power=$(grep -oP -m 1 'cpu\t+: POWER\K\d+' /proc/cpuinfo)
if [ "0$power" -gt 7 ]; then
# VSX started with POWER8
true_arch='ppc-64-vsx'
else
true_arch='ppc-64-altivec'
fi
else
true_arch='ppc-64'
fi
}
# Check the system type
uname_s=$(uname -s)
uname_m=$(uname -m)
case $uname_s in
'Darwin') # Mac OSX system
case $uname_m in
'arm64')
true_arch='apple-silicon'
file_arch='m1-apple-silicon'
;;
'x86_64')
flags=$(sysctl -n machdep.cpu.features machdep.cpu.leaf7_features | tr '\n' ' ' | tr '[:upper:]' '[:lower:]' | tr -d '_.')
set_arch_x86_64
if [ "$true_arch" = 'x86-64-vnni256' ] || [ "$true_arch" = 'x86-64-avx512' ]; then
file_arch='x86-64-bmi2'
fi
;;
esac
file_os='macos'
file_ext='tar'
;;
'Linux') # Linux system
get_flags
case $uname_m in
'x86_64')
file_os='ubuntu'
check_znver_1_2
set_arch_x86_64
;;
'i686')
file_os='ubuntu'
true_arch='x86-32'
;;
'ppc64'*)
file_os='ubuntu'
set_arch_ppc_64
;;
'aarch64')
file_os='android'
true_arch='armv8'
if check_flags 'asimddp'; then
true_arch="$true_arch-dotprod"
fi
;;
'armv7'*)
file_os='android'
true_arch='armv7'
if check_flags 'neon'; then
true_arch="$true_arch-neon"
fi
;;
'loongarch64'*)
file_os='linux'
set_arch_loongarch64
;;
*) # Unsupported machine type, exit with error
printf 'Unsupported machine type: %s\n' "$uname_m"
exit 1
;;
esac
file_ext='tar'
;;
'CYGWIN'*|'MINGW'*|'MSYS'*) # Windows system with POSIX compatibility layer
get_flags
check_znver_1_2
set_arch_x86_64
file_os='windows'
file_ext='zip'
;;
*)
# Unknown system type, exit with error
printf 'Unsupported system type: %s\n' "$uname_s"
exit 1
;;
esac
if [ -z "$file_arch" ]; then
file_arch=$true_arch
fi
file_name="stockfish-$file_os-$file_arch.$file_ext"
printf '%s %s\n' "$true_arch" "$file_name"
|
