extra/scripts/gen_bits_syscall_h.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (C) 2001 Manuel Novoa III <mjn3@uclibc.org>
   4 # Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
   5 #
   6 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   7 #
   8
   9 # June 27, 2001         Manuel Novoa III
  10 #
  11 # This script expects  CC (as used in the Makefiles) to be set
  12 # in the environment, and outputs the appropriate bits/sysnum.h #
  13 # corresponding to asm/unistd.h to stdout.
  14 #
  15 # Warning!!! This does _no_ error checking!!!
  16
  17 if [ "${KERNEL_HEADERS:-/}" != "/" ] ; then
  18   INCLUDE_OPTS="-nostdinc -I${KERNEL_HEADERS}"
  19 else
  20   # Let the toolchain use its configure paths.
  21   INCLUDE_OPTS=
  22 fi
  23
  24 case $CC in
  25 *icc*) CC_SYSNUM_ARGS="-dM" ;;
  26 *clang*) CC_SYSNUM_ARGS="-dM" ;;
  27 *)     CC_SYSNUM_ARGS="-dN" ;;
  28 esac
  29
  30 ( echo "#include <asm/unistd.h>";
  31   echo "#include <asm/unistd.h>" |
  32   $CC -E $CC_SYSNUM_ARGS $INCLUDE_OPTS - |
  33   sed -n -r \
  34       -e 's/^[ ]*#define[ ]*(__ARM_NR_|__NR_)([A-Za-z0-9_]*).*/UCLIBC\1\2 \1\2/gp' \
  35       -e 's/^[ ]*#undef[ ]*(__ARM_NR_|__NR_)([A-Za-z0-9_]*).*/UNDEFUCLIBC\1\2 \1\2/gp' # needed to strip out any kernel-internal defines
  36 ) |
  37 $CC -E $INCLUDE_OPTS - |
  38 (
  39   cat <<-EOF
  40 /* WARNING!!! AUTO-GENERATED FILE!!! DO NOT EDIT!!! */
  41 /* See $0 for more information. */
  42
  43 #ifndef _BITS_SYSNUM_H
  44 #define _BITS_SYSNUM_H
  45
  46 #ifndef _SYSCALL_H
  47 # error "Never use <bits/sysnum.h> directly; include <sys/syscall.h> instead."
  48 #endif
  49
  50 EOF
  51   sed -n -r -e 's/^UCLIBC(__ARM_NR_|__NR_)([A-Za-z0-9_]*) *(.*)/#undef \1\2\
  52 #define \1\2 \3\
  53 #define SYS_\2 \1\2/gp' \
  54      -e 's/^UNDEFUCLIBC(__ARM_NR_|__NR_)([A-Za-z0-9_]*).*/#undef \1\2\
  55 #undef SYS_\2/gp'
  56   cat <<-EOF
  57
  58 #endif
  59 EOF
  60 )