projects/linux·blob v5.12-rc5 · refs

73 lines · 1.3 KiB

1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0-only
3#
4# Generate a syscall table header.
5#
6# Each line of the syscall table should have the following format:
7#
8# NR ABI NAME [NATIVE] [COMPAT]
9#
10# NR syscall number
11# ABI ABI name
12# NAME syscall name
13# NATIVE native entry point (optional)
14# COMPAT compat entry point (optional)
15
16set -e
17
18usage() {
19 echo >&2 "usage: $0 [--abis ABIS] INFILE OUTFILE" >&2
20 echo >&2
21 echo >&2 " INFILE input syscall table"
22 echo >&2 " OUTFILE output header file"
23 echo >&2
24 echo >&2 "options:"
25 echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)"
26 exit 1
27}
28
29# default unless specified by options
30abis=
31
32while [ $# -gt 0 ]
33do
34 case $1 in
35 --abis)
36 abis=$(echo "($2)" | tr ',' '|')
37 shift 2;;
38 -*)
39 echo "$1: unknown option" >&2
40 usage;;
41 *)
42 break;;
43 esac
44done
45
46if [ $# -ne 2 ]; then
47 usage
48fi
49
50infile="$1"
51outfile="$2"
52
53nxt=0
54
55grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n | {
56
57 while read nr abi name native compat ; do
58
59 while [ $nxt -lt $nr ]; do
60 echo "__SYSCALL($nxt, sys_ni_syscall)"
61 nxt=$((nxt + 1))
62 done
63
64 if [ -n "$compat" ]; then
65 echo "__SYSCALL_WITH_COMPAT($nr, $native, $compat)"
66 elif [ -n "$native" ]; then
67 echo "__SYSCALL($nr, $native)"
68 else
69 echo "__SYSCALL($nr, sys_ni_syscall)"
70 fi
71 nxt=$((nr + 1))
72 done
73} > "$outfile"