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#!/bin/bash
# NOTE: changes to the arch_syscall_table struct in syscalls.h will affect
# this script/gperf - BEWARE!
###
# helper functions
function exit_usage() {
echo "usage: $0 <syscall_csv_file> <gperf_template>"
exit 1
}
###
# main
# sanity check
[[ ! -r "$1" || ! -r "$2" ]] && exit_usage
sys_csv=$1
gperf_tmpl=$2
sys_csv_tmp=$(mktemp -t generate_syscalls_XXXXXX)
# filter and prepare the syscall csv file
cat $sys_csv | grep -v '^#' | nl -ba -s, -v0 | \
sed -e '{s|^[[:space:]]\+\([0-9]\+\),\([^,]\+\),\(.*\)|\2,\1,\3|;};' \
-e '{:r1; {s|\([^,]\+\)\(.*\)[^_]PNR|\1\2,__PNR_\1|g;}; t r1};' \
-e '{s|,KV_|,SCMP_KV_|g;};' \
> $sys_csv_tmp
[[ $? -ne 0 ]] && exit 1
# create the gperf file
sed -e "/@@SYSCALLS_TABLE@@/r $sys_csv_tmp" \
-e '/@@SYSCALLS_TABLE@@/d' \
$gperf_tmpl > syscalls.perf
[[ $? -ne 0 ]] && exit 1
# cleanup
rm -f $sys_csv_tmp
exit 0
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