LXR linux/arch/arm/tools/syscallnr.sh

   1#!/bin/sh
   2# SPDX-License-Identifier: GPL-2.0
   3in="$1"
   4out="$2"
   5align=1
   6
   7fileguard=_ASM_ARM_`basename "$out" | sed \
   8    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
   9    -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
  10
  11grep -E "^[0-9A-Fa-fXx]+[[:space:]]+" "$in" | sort -n | tail -n1 | (
  12    echo "#ifndef ${fileguard}
  13#define ${fileguard} 1
  14
  15/*
  16 * This needs to be greater than __NR_last_syscall+1 in order to account
  17 * for the padding in the syscall table.
  18 */
  19"
  20
  21    while read nr abi name entry; do
  22        nr=$(($nr + 1))
  23        while [ "$(($nr / (256 * $align) ))" -gt 0 ]; do
  24            align=$(( $align * 4 ))
  25        done
  26        nr=$(( ($nr + $align - 1) & ~($align - 1) ))
  27        echo "/* aligned to $align */"
  28        echo "#define __NR_syscalls $nr"
  29    done
  30
  31    echo ""
  32    echo "#endif /* ${fileguard} */"
  33) > "$out"
  34