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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899#!/bin/sh# SPDX-License-Identifier: GPL-2.0-only## Generate a syscall number header.## Each line of the syscall table should have the following format:## NR ABI NAME [NATIVE] [COMPAT]## NR syscall number# ABI ABI name# NAME syscall name# NATIVE native entry point (optional)# COMPAT compat entry point (optional)
set -e
usage() { echo >&2 "usage: $0 [--abis ABIS] [--emit-nr] [--offset OFFSET] [--prefix PREFIX] INFILE OUTFILE" >&2 echo >&2 echo >&2 " INFILE input syscall table" echo >&2 " OUTFILE output header file" echo >&2 echo >&2 "options:" echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)" echo >&2 " --emit-nr Emit the macro of the number of syscalls (__NR_syscalls)" echo >&2 " --offset OFFSET The offset of syscall numbers" echo >&2 " --prefix PREFIX The prefix to the macro like __NR_<PREFIX><NAME>" exit 1}
# default unless specified by optionsabis=emit_nr=offset=prefix=
while [ $# -gt 0 ]do case $1 in --abis) abis=$(echo "($2)" | tr ',' '|') shift 2;; --emit-nr) emit_nr=1 shift 1;; --offset) offset=$2 shift 2;; --prefix) prefix=$2 shift 2;; -*) echo "$1: unknown option" >&2 usage;; *) break;; esacdone
if [ $# -ne 2 ]; then usagefi
infile="$1"outfile="$2"
guard=_UAPI_ASM_$(basename "$outfile" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \ -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g')
grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | { echo "#ifndef $guard" echo "#define $guard" echo
max=0 while read nr abi name native compat ; do
max=$nr
if [ -n "$offset" ]; then nr="($offset + $nr)" fi
echo "#define __NR_$prefix$name $nr" done
if [ -n "$emit_nr" ]; then echo echo "#ifdef __KERNEL__" echo "#define __NR_${prefix}syscalls $(($max + 1))" echo "#endif" fi
echo echo "#endif /* $guard */"} > "$outfile"