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67 lines
2.6 KiB
Plaintext
67 lines
2.6 KiB
Plaintext
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dnl Copyright (C) 1997-2021 Free Software Foundation, Inc.
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dnl
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dnl This program is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl This program is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
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dnl
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dnl Specify the alignment restrictions of the target architecture.
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dnl Without this option all possible alignment restrictions are accommodated.
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dnl arg[1] is hardwired target alignment
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dnl arg[2] is default target alignment
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AC_DEFUN([SIM_AC_OPTION_ALIGNMENT],
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wire_alignment="[$1]"
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default_alignment="[$2]"
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[
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AC_ARG_ENABLE(sim-alignment,
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[AS_HELP_STRING([--enable-sim-alignment=align],
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[Specify strict, nonstrict or forced alignment of memory accesses])],
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[case "${enableval}" in
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strict | STRICT) sim_alignment="-DWITH_ALIGNMENT=STRICT_ALIGNMENT";;
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nonstrict | NONSTRICT) sim_alignment="-DWITH_ALIGNMENT=NONSTRICT_ALIGNMENT";;
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forced | FORCED) sim_alignment="-DWITH_ALIGNMENT=FORCED_ALIGNMENT";;
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yes) if test x"$wire_alignment" != x; then
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sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
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else
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if test x"$default_alignment" != x; then
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sim_alignment="-DWITH_ALIGNMENT=${default_alignment}"
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else
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echo "No hard-wired alignment for target $target" 1>&6
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sim_alignment="-DWITH_ALIGNMENT=0"
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fi
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fi;;
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no) if test x"$default_alignment" != x; then
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sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
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else
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if test x"$wire_alignment" != x; then
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sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${wire_alignment}"
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else
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echo "No default alignment for target $target" 1>&6
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sim_alignment="-DWITH_DEFAULT_ALIGNMENT=0"
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fi
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fi;;
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*) AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-alignment"); sim_alignment="";;
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esac
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if test x"$silent" != x"yes" && test x"$sim_alignment" != x""; then
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echo "Setting alignment flags = $sim_alignment" 6>&1
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fi],
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[if test x"$default_alignment" != x; then
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sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
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else
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if test x"$wire_alignment" != x; then
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sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
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else
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sim_alignment=
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fi
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fi])dnl
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])dnl
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AC_SUBST(sim_alignment)
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