projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b9da928a 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 | ||
| 16 | set -e | |
| 17 | ||
| 18 | usage() { | |
| 19 | echo >&2 "usage: $0 [--abis ABIS] [--emit-nr] [--offset OFFSET] [--prefix PREFIX] 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 | echo >&2 " --emit-nr Emit the macro of the number of syscalls (__NR_syscalls)" | |
| 27 | echo >&2 " --offset OFFSET The offset of syscall numbers" | |
| 28 | echo >&2 " --prefix PREFIX The prefix to the macro like __NR_<PREFIX><NAME>" | |
| 29 | exit 1 | |
| 30 | } | |
| 31 | ||
| 32 | # default unless specified by options | |
| 33 | abis= | |
| 34 | emit_nr= | |
| 35 | offset= | |
| 36 | prefix= | |
| 37 | ||
| 38 | while [ $# -gt 0 ] | |
| 39 | do | |
| 40 | case $1 in | |
| 41 | --abis) | |
| 42 | abis=$(echo "($2)" | tr ',' '|') | |
| 43 | shift 2;; | |
| 44 | --emit-nr) | |
| 45 | emit_nr=1 | |
| 46 | shift 1;; | |
| 47 | --offset) | |
| 48 | offset=$2 | |
| 49 | shift 2;; | |
| 50 | --prefix) | |
| 51 | prefix=$2 | |
| 52 | shift 2;; | |
| 53 | -*) | |
| 54 | echo "$1: unknown option" >&2 | |
| 55 | usage;; | |
| 56 | *) | |
| 57 | break;; | |
| 58 | esac | |
| 59 | done | |
| 60 | ||
| 61 | if [ $# -ne 2 ]; then | |
| 62 | usage | |
| 63 | fi | |
| 64 | ||
| 65 | infile="$1" | |
| 66 | outfile="$2" | |
| 67 | ||
| 68 | guard=_UAPI_ASM_$(basename "$outfile" | | |
| 69 | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \ | |
| 70 | -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g') | |
| 71 | ||
| c6a3a81d | 72 | grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | { |
| b9da928a MY |
73 | echo "#ifndef $guard" |
| 74 | echo "#define $guard" | |
| 75 | echo | |
| 76 | ||
| 77 | max=0 | |
| 78 | while read nr abi name native compat ; do | |
| 79 | ||
| 80 | max=$nr | |
| 81 | ||
| 82 | if [ -n "$offset" ]; then | |
| 83 | nr="($offset + $nr)" | |
| 84 | fi | |
| 85 | ||
| 86 | echo "#define __NR_$prefix$name $nr" | |
| 87 | done | |
| 88 | ||
| 89 | if [ -n "$emit_nr" ]; then | |
| 90 | echo | |
| 91 | echo "#ifdef __KERNEL__" | |
| 92 | echo "#define __NR_${prefix}syscalls $(($max + 1))" | |
| 93 | echo "#endif" | |
| 94 | fi | |
| 95 | ||
| 96 | echo | |
| 97 | echo "#endif /* $guard */" | |
| 98 | } > "$outfile" |