sysdeps/unix/sysv/linux/filter-nr-syscalls.awk

   1 # Filter preprocessor __NR_* macros and extract system call names.
   2 # Copyright (C) 2017-2021 Free Software Foundation, Inc.
   3 # This file is part of the GNU C Library.
   4 #
   5 # The GNU C Library is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU Lesser General Public
   7 # License as published by the Free Software Foundation; either
   8 # version 2.1 of the License, or (at your option) any later version.
   9 #
  10 # The GNU C Library is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # Lesser General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU Lesser General Public
  16 # License along with the GNU C Library; if not, see
  17 # <https://www.gnu.org/licenses/>.
  18
  19 # Skip reserved system calls.
  20 /^#define __NR_(unused|reserved)[0-9]+ / {
  21     next;
  22 }
  23
  24 # Skip pseudo-system calls which describe ranges.
  25 /^#define __NR_(syscalls|arch_specific_syscall|(OABI_)?SYSCALL_BASE) / {
  26     next;
  27 }
  28 /^#define __NR_(|64_|[NO]32_)Linux(_syscalls)? / {
  29     next;
  30 }
  31
  32 # Print the remaining _NR_* macros as system call names.
  33 /^#define __NR_/ {
  34     print substr($2, 6);
  35 }