sim/m4/sim_ac_option_endian.m4

   1 dnl   Copyright (C) 1997-2021 Free Software Foundation, Inc.
   2 dnl
   3 dnl This program is free software; you can redistribute it and/or modify
   4 dnl it under the terms of the GNU General Public License as published by
   5 dnl the Free Software Foundation; either version 3 of the License, or
   6 dnl (at your option) any later version.
   7 dnl
   8 dnl This program is distributed in the hope that it will be useful,
   9 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 dnl GNU General Public License for more details.
  12 dnl
  13 dnl You should have received a copy of the GNU General Public License
  14 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 dnl
  16 dnl --enable-sim-endian={yes,no,big,little} is for simulators
  17 dnl that support both big and little endian targets.
  18 dnl arg[1] is hardwired target endianness.
  19 dnl arg[2] is default target endianness.
  20 AC_DEFUN([SIM_AC_OPTION_ENDIAN],
  21 [
  22 wire_endian="[$1]"
  23 default_endian="[$2]"
  24 AC_ARG_ENABLE(sim-endian,
  25 [AS_HELP_STRING([--enable-sim-endian=endian],
  26                 [Specify target byte endian orientation])],
  27 [case "${enableval}" in
  28   b*|B*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_BIG";;
  29   l*|L*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_LITTLE";;
  30   yes)   if test x"$wire_endian" != x; then
  31            sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
  32          else
  33           if test x"$default_endian" != x; then
  34              sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
  35            else
  36              echo "No hard-wired endian for target $target" 1>&6
  37              sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_UNKNOWN"
  38            fi
  39          fi;;
  40   no)    if test x"$default_endian" != x; then
  41            sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
  42          else
  43            if test x"$wire_endian" != x; then
  44              sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
  45            else
  46              echo "No default endian for target $target" 1>&6
  47              sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_UNKNOWN"
  48            fi
  49          fi;;
  50   *)     AC_MSG_ERROR("Unknown value $enableval for --enable-sim-endian"); sim_endian="";;
  51 esac
  52 if test x"$silent" != x"yes" && test x"$sim_endian" != x""; then
  53   echo "Setting endian flags = $sim_endian" 6>&1
  54 fi],
  55 [if test x"$default_endian" != x; then
  56   sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
  57 else
  58   if test x"$wire_endian" != x; then
  59     sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
  60   else
  61     sim_endian=
  62   fi
  63 fi])dnl
  64 ])
  65 AC_SUBST(sim_endian)