aboutsummaryrefslogtreecommitdiff
path: root/scripts/syscalltbl.sh
blob: aa6ab156301c1bda009d5081507827dc29620a2c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only
#
# Generate a syscall table 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] 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)"
	exit 1
}

# default unless specified by options
abis=

while [ $# -gt 0 ]
do
	case $1 in
	--abis)
		abis=$(echo "($2)" | tr ',' '|')
		shift 2;;
	-*)
		echo "$1: unknown option" >&2
		usage;;
	*)
		break;;
	esac
done

if [ $# -ne 2 ]; then
	usage
fi

infile="$1"
outfile="$2"

nxt=0

grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n | {

	while read nr abi name native compat ; do

		while [ $nxt -lt $nr ]; do
			echo "__SYSCALL($nxt, sys_ni_syscall)"
			nxt=$((nxt + 1))
		done

		if [ -n "$compat" ]; then
			echo "__SYSCALL_WITH_COMPAT($nr, $native, $compat)"
		elif [ -n "$native" ]; then
			echo "__SYSCALL($nr, $native)"
		else
			echo "__SYSCALL($nr, sys_ni_syscall)"
		fi
		nxt=$((nr + 1))
	done
} > "$outfile"