1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0-only 2 # SPDX-License-Identifier: GPL-2.0-only
3 # 3 #
4 # Generate a syscall table header. 4 # Generate a syscall table header.
5 # 5 #
6 # Each line of the syscall table should have t 6 # Each line of the syscall table should have the following format:
7 # 7 #
8 # NR ABI NAME [NATIVE] [COMPAT] 8 # NR ABI NAME [NATIVE] [COMPAT]
9 # 9 #
10 # NR syscall number 10 # NR syscall number
11 # ABI ABI name 11 # ABI ABI name
12 # NAME syscall name 12 # NAME syscall name
13 # NATIVE native entry point (optional) 13 # NATIVE native entry point (optional)
14 # COMPAT compat entry point (optional) 14 # COMPAT compat entry point (optional)
15 15
16 set -e 16 set -e
17 17
18 usage() { 18 usage() {
19 echo >&2 "usage: $0 [--abis ABIS] INFI 19 echo >&2 "usage: $0 [--abis ABIS] INFILE OUTFILE" >&2
20 echo >&2 20 echo >&2
21 echo >&2 " INFILE input syscall ta 21 echo >&2 " INFILE input syscall table"
22 echo >&2 " OUTFILE output header fi 22 echo >&2 " OUTFILE output header file"
23 echo >&2 23 echo >&2
24 echo >&2 "options:" 24 echo >&2 "options:"
25 echo >&2 " --abis ABIS ABI(s) 25 echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)"
26 exit 1 26 exit 1
27 } 27 }
28 28
29 # default unless specified by options 29 # default unless specified by options
30 abis= 30 abis=
31 31
32 while [ $# -gt 0 ] 32 while [ $# -gt 0 ]
33 do 33 do
34 case $1 in 34 case $1 in
35 --abis) 35 --abis)
36 abis=$(echo "($2)" | tr ',' '| 36 abis=$(echo "($2)" | tr ',' '|')
37 shift 2;; 37 shift 2;;
38 -*) 38 -*)
39 echo "$1: unknown option" >&2 39 echo "$1: unknown option" >&2
40 usage;; 40 usage;;
41 *) 41 *)
42 break;; 42 break;;
43 esac 43 esac
44 done 44 done
45 45
46 if [ $# -ne 2 ]; then 46 if [ $# -ne 2 ]; then
47 usage 47 usage
48 fi 48 fi
49 49
50 infile="$1" 50 infile="$1"
51 outfile="$2" 51 outfile="$2"
52 52
53 nxt=0 53 nxt=0
54 54
55 grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | 55 grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | {
56 56
57 while read nr abi name native compat n !! 57 while read nr abi name native compat ; do
58 58
59 if [ $nxt -gt $nr ]; then 59 if [ $nxt -gt $nr ]; then
60 echo "error: $infile: 60 echo "error: $infile: syscall table is not sorted or duplicates the same syscall number" >&2
61 exit 1 61 exit 1
62 fi 62 fi
63 63
64 while [ $nxt -lt $nr ]; do 64 while [ $nxt -lt $nr ]; do
65 echo "__SYSCALL($nxt, 65 echo "__SYSCALL($nxt, sys_ni_syscall)"
66 nxt=$((nxt + 1)) 66 nxt=$((nxt + 1))
67 done 67 done
68 68
69 if [ "$compat" = "-" ]; then !! 69 if [ -n "$compat" ]; then
70 unset compat <<
71 fi <<
72 <<
73 if [ -n "$noreturn" ]; then <<
74 if [ "$noreturn" != "n <<
75 echo "error: $ <<
76 exit 1 <<
77 fi <<
78 if [ -n "$compat" ]; t <<
79 echo "__SYSCAL <<
80 else <<
81 echo "__SYSCAL <<
82 fi <<
83 elif [ -n "$compat" ]; then <<
84 echo "__SYSCALL_WITH_C 70 echo "__SYSCALL_WITH_COMPAT($nr, $native, $compat)"
85 elif [ -n "$native" ]; then 71 elif [ -n "$native" ]; then
86 echo "__SYSCALL($nr, $ 72 echo "__SYSCALL($nr, $native)"
87 else 73 else
88 echo "__SYSCALL($nr, s 74 echo "__SYSCALL($nr, sys_ni_syscall)"
89 fi 75 fi
90 nxt=$((nr + 1)) 76 nxt=$((nr + 1))
91 done 77 done
92 } > "$outfile" 78 } > "$outfile"
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