mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 23:14:31 +08:00
99 lines
1.9 KiB
Bash
99 lines
1.9 KiB
Bash
|
#!/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 options
|
||
|
|
abis=
|
||
|
|
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;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
|
||
|
|
if [ $# -ne 2 ]; then
|
||
|
|
usage
|
||
|
|
fi
|
||
|
|
|
||
|
|
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" | sort -n | {
|
||
|
|
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"
|