+prefix=$7
+archfile=$8
+opcfile=$9
+shift ; options=$9
+
+# List of extra files to build.
+# Values: opinst (only 1 extra file at present)
+shift ; extrafiles=$9
+
+rootdir=${srcdir}/..
+
+# $arch is $6, as passed on the command line.
+# $ARCH is the same argument but in all uppercase.
+# Both forms are used in this script.
+
+lowercase='abcdefghijklmnopqrstuvwxyz'
+uppercase='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+ARCH=`echo ${arch} | tr "${lowercase}" "${uppercase}"`
+
+# Allow parallel makes to run multiple cgen's without colliding.
+tmp=tmp-$$
+
+extrafile_args=""
+for ef in .. $extrafiles
+do
+ case $ef in
+ ..) ;;
+ opinst) extrafile_args="-Q ${tmp}-opinst.c1 $extrafile_args" ;;
+ esac
+done
+
+header="/* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */"
+
+case $action in
+opcodes)
+ # Remove residual working files.
+ rm -f ${tmp}-desc.h ${tmp}-desc.h1
+ rm -f ${tmp}-desc.c ${tmp}-desc.c1
+ rm -f ${tmp}-opc.h ${tmp}-opc.h1
+ rm -f ${tmp}-opc.c ${tmp}-opc.c1
+ rm -f ${tmp}-opinst.c ${tmp}-opinst.c1
+ rm -f ${tmp}-ibld.h ${tmp}-ibld.h1
+ rm -f ${tmp}-ibld.c ${tmp}-ibld.in1
+ rm -f ${tmp}-asm.c ${tmp}-asm.in1
+ rm -f ${tmp}-dis.c ${tmp}-dis.in1
+
+ # Run CGEN.
+ ${cgen} ${cgendir}/cgen-opc.scm \
+ -s ${cgendir} \
+ ${cgenflags} \
+ -f "${options}" \
+ -m all \
+ -a ${archfile} \
+ -OPC ${opcfile} \
+ -H ${tmp}-desc.h1 \
+ -C ${tmp}-desc.c1 \
+ -O ${tmp}-opc.h1 \
+ -P ${tmp}-opc.c1 \
+ -L ${tmp}-ibld.in1 \
+ -A ${tmp}-asm.in1 \
+ -D ${tmp}-dis.in1 \
+ ${extrafile_args}
+
+ # Customise generated files for the particular architecture.
+ sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e 's/[ ][ ]*$//' < ${tmp}-desc.h1 > ${tmp}-desc.h
+ ${rootdir}/move-if-change ${tmp}-desc.h ${srcdir}/${prefix}-desc.h
+
+ sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e "s/@prefix@/${prefix}/" -e 's/[ ][ ]*$//' \
+ < ${tmp}-desc.c1 > ${tmp}-desc.c
+ ${rootdir}/move-if-change ${tmp}-desc.c ${srcdir}/${prefix}-desc.c
+
+ sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e 's/[ ][ ]*$//' < ${tmp}-opc.h1 > ${tmp}-opc.h
+ ${rootdir}/move-if-change ${tmp}-opc.h ${srcdir}/${prefix}-opc.h
+
+ sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e "s/@prefix@/${prefix}/" -e 's/[ ][ ]*$//' \
+ < ${tmp}-opc.c1 > ${tmp}-opc.c
+ ${rootdir}/move-if-change ${tmp}-opc.c ${srcdir}/${prefix}-opc.c
+
+ case $extrafiles in
+ *opinst*)
+ sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e "s/@prefix@/${prefix}/" -e 's/[ ][ ]*$//' \
+ < ${tmp}-opinst.c1 >${tmp}-opinst.c
+ ${rootdir}/move-if-change ${tmp}-opinst.c ${srcdir}/${prefix}-opinst.c
+ ;;
+ esac
+
+ cat ${srcdir}/cgen-ibld.in ${tmp}-ibld.in1 | \
+ sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e "s/@prefix@/${prefix}/" -e 's/[ ][ ]*$//' > ${tmp}-ibld.c
+ ${rootdir}/move-if-change ${tmp}-ibld.c ${srcdir}/${prefix}-ibld.c
+
+ sed -e "/ -- assembler routines/ r ${tmp}-asm.in1" ${srcdir}/cgen-asm.in \
+ | sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e "s/@prefix@/${prefix}/" -e 's/[ ][ ]*$//' \
+ > ${tmp}-asm.c
+ ${rootdir}/move-if-change ${tmp}-asm.c ${srcdir}/${prefix}-asm.c
+
+ sed -e "/ -- disassembler routines/ r ${tmp}-dis.in1" ${srcdir}/cgen-dis.in \
+ | sed -e "1i$header" \
+ -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+ -e "s/@prefix@/${prefix}/" -e 's/[ ][ ]*$//' \
+ > ${tmp}-dis.c
+ ${rootdir}/move-if-change ${tmp}-dis.c ${srcdir}/${prefix}-dis.c
+
+ # Remove temporary files.
+ rm -f ${tmp}-desc.h1 ${tmp}-desc.c1
+ rm -f ${tmp}-opc.h1 ${tmp}-opc.c1
+ rm -f ${tmp}-opinst.c1
+ rm -f ${tmp}-ibld.h1 ${tmp}-ibld.in1
+ rm -f ${tmp}-asm.in1 ${tmp}-dis.in1
+ ;;
+
+*)
+ echo "$0: bad action: ${action}" >&2
+ exit 1
+ ;;
+
+esac