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Diffstat (limited to 'sim/m4/sim_ac_option_float.m4')
-rw-r--r-- | sim/m4/sim_ac_option_float.m4 | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sim/m4/sim_ac_option_float.m4 b/sim/m4/sim_ac_option_float.m4 new file mode 100644 index 0000000..a38678c --- /dev/null +++ b/sim/m4/sim_ac_option_float.m4 @@ -0,0 +1,47 @@ +dnl Copyright (C) 1997-2021 Free Software Foundation, Inc. +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 3 of the License, or +dnl (at your option) any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program. If not, see <http://www.gnu.org/licenses/>. +dnl +dnl --enable-sim-float is for developers of the simulator +dnl It specifies the presence of hardware floating point +dnl And optionally the bitsize of the floating point register. +dnl arg[1] specifies the presence (or absence) of floating point hardware +dnl arg[2] specifies the number of bits in a floating point register +AC_DEFUN([SIM_AC_OPTION_FLOAT], +[ +default_sim_float="[$1]" +default_sim_float_bitsize="[$2]" +AC_ARG_ENABLE(sim-float, +[AS_HELP_STRING([--enable-sim-float], + [Specify that the target processor has floating point hardware])], +[case "${enableval}" in + yes | hard) sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT";; + no | soft) sim_float="-DWITH_FLOATING_POINT=SOFT_FLOATING_POINT";; + 32) sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT -DWITH_TARGET_FLOATING_POINT_BITSIZE=32";; + 64) sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT -DWITH_TARGET_FLOATING_POINT_BITSIZE=64";; + *) AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-float"); sim_float="";; +esac +if test x"$silent" != x"yes" && test x"$sim_float" != x""; then + echo "Setting float flags = $sim_float" 6>&1 +fi],[ +sim_float= +if test x"${default_sim_float}" != x""; then + sim_float="-DWITH_FLOATING_POINT=${default_sim_float}" +fi +if test x"${default_sim_float_bitsize}" != x""; then + sim_float="$sim_float -DWITH_TARGET_FLOATING_POINT_BITSIZE=${default_sim_float_bitsize}" +fi +])dnl +]) +AC_SUBST(sim_float) |