projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 27932b6a MY |
1 | #!/bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0-only | |
| 3 | # | |
| 4 | # Generate a syscall number 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 | set -e | |
| 16 | ||
| 17 | usage() { | |
| 18 | echo >&2 "usage: $0 [--abis ABIS] [--prefix PREFIX] INFILE OUTFILE" >&2 | |
| 19 | echo >&2 | |
| 20 | echo >&2 " INFILE input syscall table" | |
| 21 | echo >&2 " OUTFILE output header file" | |
| 22 | echo >&2 | |
| 23 | echo >&2 "options:" | |
| 24 | echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)" | |
| 25 | echo >&2 " --prefix PREFIX The prefix to the macro like __NR_<PREFIX><NAME>" | |
| 26 | exit 1 | |
| 27 | } | |
| 28 | ||
| 29 | # default unless specified by options | |
| 30 | abis= | |
| 31 | prefix= | |
| 32 | ||
| 33 | while [ $# -gt 0 ] | |
| 34 | do | |
| 35 | case $1 in | |
| 36 | --abis) | |
| 37 | abis=$(echo "($2)" | tr ',' '|') | |
| 38 | shift 2;; | |
| 39 | --prefix) | |
| 40 | prefix=$2 | |
| 41 | shift 2;; | |
| 42 | -*) | |
| 43 | echo "$1: unknown option" >&2 | |
| 44 | usage;; | |
| 45 | *) | |
| 46 | break;; | |
| 47 | esac | |
| 48 | done | |
| 49 | ||
| 50 | if [ $# -ne 2 ]; then | |
| 51 | usage | |
| 52 | fi | |
| 53 | ||
| 54 | infile="$1" | |
| 55 | outfile="$2" | |
| 56 | ||
| 57 | guard=_ASM_$(basename "$outfile" | | |
| 58 | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \ | |
| 59 | -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g') | |
| 60 | ||
| 61 | grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | sort -n | { | |
| 62 | echo "#ifndef $guard" | |
| 63 | echo "#define $guard" | |
| 64 | echo | |
| 65 | ||
| 66 | max=0 | |
| 67 | while read nr abi name native compat ; do | |
| 68 | max=$nr | |
| 69 | done | |
| 70 | ||
| 71 | echo "#define __NR_${prefix}syscalls $(($max + 1))" | |
| 72 | echo | |
| 73 | echo "#endif /* $guard */" | |
| 74 | } > "$outfile" |