#! /bin/sh
# Generate CGEN simulator files.
#
# Usage: /bin/sh cgen.sh {"arch"|"cpu"|"decode"|"defs"|"cpu-decode"} \
#	srcdir cgen cgendir cgenflags \
#	arch archflags cpu mach suffix archfile extrafiles opcfile
#
# We store the generated files in the source directory until we decide to
# ship a Scheme interpreter (or other implementation) with gdb/binutils.
# Maybe we never will.

# We want to behave like make, any error forces us to stop.
set -e

action=$1
srcdir=$2
cgen="$3"
cgendir=$4
cgenflags=$5
arch=$6
archflags=$7
cpu=$8
isa=$9
# portably bring parameters beyond $9 into view
shift ; mach=$9
shift ; suffix=$9
shift ; archfile=$9
shift ; extrafiles=$9
shift ; opcfile=$9

rootdir=${srcdir}/../..
move_if_change="${CONFIG_SHELL:-/bin/sh} ${rootdir}/move-if-change"

test -z "${opcfile}" && opcfile=/dev/null

if test -z "$isa" ; then
  isa=all
  prefix=$cpu
else
  prefix=${cpu}_$isa
fi

lowercase='abcdefghijklmnopqrstuvwxyz'
uppercase='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
ARCH=`echo ${arch} | tr "${lowercase}" "${uppercase}"`
CPU=`echo ${cpu} | tr "${lowercase}" "${uppercase}"`
PREFIX=`echo ${prefix} | tr "${lowercase}" "${uppercase}"`

sedscript="\
-e s/@ARCH@/${ARCH}/g -e s/@arch@/${arch}/g \
-e s/@CPU@/${CPU}/g -e s/@cpu@/${cpu}/g \
-e s/@PREFIX@/${PREFIX}/g -e s/@prefix@/${prefix}/g"

# avoid collisions in parallel makes
tmp=tmp-$$

case $action in
arch)
	rm -f ${tmp}-arch.h1 ${tmp}-arch.h
	rm -f ${tmp}-arch.c1 ${tmp}-arch.c
	rm -f ${tmp}-all.h1 ${tmp}-all.h

	${cgen} ${cgendir}/cgen-sim.scm \
		-s ${cgendir} \
		${cgenflags} \
		-f "${archflags}" \
		-m ${mach} \
		-a ${archfile} \
		-i ${isa} \
		-A ${tmp}-arch.h1 \
		-B ${tmp}-arch.c1 \
		-N ${tmp}-all.h1
	sed $sedscript < ${tmp}-arch.h1 > ${tmp}-arch.h
	${move_if_change} ${tmp}-arch.h ${srcdir}/arch.h
	sed $sedscript < ${tmp}-arch.c1 > ${tmp}-arch.c
	${move_if_change} ${tmp}-arch.c ${srcdir}/arch.c
	sed $sedscript < ${tmp}-all.h1 > ${tmp}-all.h
	${move_if_change} ${tmp}-all.h ${srcdir}/cpuall.h

	rm -f ${tmp}-arch.h1 ${tmp}-arch.c1 ${tmp}-all.h1
	;;

cpu | decode | cpu-decode)

	fileopts=""

	case $action in
	*cpu*)
		rm -f ${tmp}-cpu.h1 ${tmp}-cpu.c1
		rm -f ${tmp}-ext.c1 ${tmp}-read.c1 ${tmp}-write.c1
		rm -f ${tmp}-sem.c1 ${tmp}-semsw.c1
		rm -f ${tmp}-mod.c1
		rm -f ${tmp}-cpu.h ${tmp}-cpu.c
		rm -f ${tmp}-ext.c ${tmp}-read.c ${tmp}-write.c
		rm -f ${tmp}-sem.c ${tmp}-semsw.c ${tmp}-mod.c
		fileopts="$fileopts \
			-C ${tmp}-cpu.h1 \
			-U ${tmp}-cpu.c1 \
			-M ${tmp}-mod.c1"
		;;
	esac

	case $action in
	*decode*)
		rm -f ${tmp}-dec.h1 ${tmp}-dec.h ${tmp}-dec.c1 ${tmp}-dec.c
		fileopts="$fileopts \
			-T ${tmp}-dec.h1 \
			-D ${tmp}-dec.c1"
		;;
	esac

	case "$extrafiles" in
	*/extr/*) fileopts="${fileopts} -E ${tmp}-ext.c1" ;;
	esac
	case "$extrafiles" in
	*/read/*) fileopts="${fileopts} -R ${tmp}-read.c1" ;;
	esac
	case "$extrafiles" in
	*/write/*) fileopts="${fileopts} -W ${tmp}-write.c1" ;;
	esac
	case "$extrafiles" in
	*/sem/*) fileopts="${fileopts} -S ${tmp}-sem.c1" ;;
	esac
	case "$extrafiles" in
	*/semsw/*) fileopts="${fileopts} -X ${tmp}-semsw.c1" ;;
	esac

	${cgen} ${cgendir}/cgen-sim.scm \
		-s ${cgendir} \
		${cgenflags} \
		-f "${archflags}" \
		-m ${mach} \
		-a ${archfile} \
		-i ${isa} \
		${fileopts}

	case $action in
	*cpu*)
		sed $sedscript < ${tmp}-cpu.h1 > ${tmp}-cpu.h
		${move_if_change} ${tmp}-cpu.h ${srcdir}/cpu${suffix}.h
		sed $sedscript < ${tmp}-cpu.c1 > ${tmp}-cpu.c
		${move_if_change} ${tmp}-cpu.c ${srcdir}/cpu${suffix}.c
		sed $sedscript < ${tmp}-mod.c1 > ${tmp}-mod.c
		${move_if_change} ${tmp}-mod.c ${srcdir}/model${suffix}.c
		rm -f ${tmp}-cpu.h1 ${tmp}-cpu.c1 ${tmp}-mod.c1
		;;
	esac

	case $action in
	*decode*)
		sed $sedscript < ${tmp}-dec.h1 > ${tmp}-dec.h
		${move_if_change} ${tmp}-dec.h ${srcdir}/decode${suffix}.h
		sed $sedscript < ${tmp}-dec.c1 > ${tmp}-dec.c
		${move_if_change} ${tmp}-dec.c ${srcdir}/decode${suffix}.c
		rm -f ${tmp}-dec.h1 ${tmp}-dec.c1
		;;
	esac

	if test -f ${tmp}-ext.c1 ; then \
		sed $sedscript < ${tmp}-ext.c1 > ${tmp}-ext.c ; \
		${move_if_change} ${tmp}-ext.c ${srcdir}/extract${suffix}.c ; \
		rm -f ${tmp}-ext.c1
	fi
	if test -f ${tmp}-read.c1 ; then \
		sed $sedscript < ${tmp}-read.c1 > ${tmp}-read.c ; \
		${move_if_change} ${tmp}-read.c ${srcdir}/read${suffix}.c ; \
		rm -f ${tmp}-read.c1
	fi
	if test -f ${tmp}-write.c1 ; then \
		sed $sedscript < ${tmp}-write.c1 > ${tmp}-write.c ; \
		${move_if_change} ${tmp}-write.c ${srcdir}/write${suffix}.c ; \
		rm -f ${tmp}-write.c1
	fi
	if test -f ${tmp}-sem.c1 ; then \
		sed $sedscript < ${tmp}-sem.c1 > ${tmp}-sem.c ; \
		${move_if_change} ${tmp}-sem.c ${srcdir}/sem${suffix}.c ; \
		rm -f ${tmp}-sem.c1
	fi
	if test -f ${tmp}-semsw.c1 ; then \
		sed $sedscript < ${tmp}-semsw.c1 > ${tmp}-semsw.c ; \
		${move_if_change} ${tmp}-semsw.c ${srcdir}/sem${suffix}-switch.c ; \
		rm -f ${tmp}-semsw.c1
	fi

	;;

defs)
	rm -f ${tmp}-defs.h1 ${tmp}-defs.h
	
	${cgen} ${cgendir}/cgen-sim.scm \
		-s ${cgendir} \
		${cgenflags} \
		-f "${archflags}" \
		-m ${mach} \
		-a ${archfile} \
		-i ${isa} \
		-G ${tmp}-defs.h1
	sed $sedscript < ${tmp}-defs.h1 > ${tmp}-defs.h
	${move_if_change} ${tmp}-defs.h ${srcdir}/defs${suffix}.h
	rm -f ${tmp}-defs.h1
	;;

desc)
	rm -f ${tmp}-desc.h1 ${tmp}-desc.h
	rm -f ${tmp}-desc.c1 ${tmp}-desc.c
	rm -f ${tmp}-opc.h1 ${tmp}-opc.h

	${cgen} ${cgendir}/cgen-opc.scm \
		-s ${cgendir} \
		${cgenflags} \
		-OPC ${opcfile} \
		-f "${archflags}" \
		-m ${mach} \
		-a ${archfile} \
		-i ${isa} \
		-H ${tmp}-desc.h1 \
		-C ${tmp}-desc.c1 \
		-O ${tmp}-opc.h1
	sed $sedscript < ${tmp}-desc.h1 > ${tmp}-desc.h
	${move_if_change} ${tmp}-desc.h ${srcdir}/${arch}-desc.h
	sed $sedscript < ${tmp}-desc.c1 > ${tmp}-desc.c
	${move_if_change} ${tmp}-desc.c ${srcdir}/${arch}-desc.c
	sed $sedscript < ${tmp}-opc.h1 > ${tmp}-opc.h
	${move_if_change} ${tmp}-opc.h ${srcdir}/${arch}-opc.h

	rm -f ${tmp}-desc.h1 ${tmp}-desc.c1 ${tmp}-opc.h1
	;;

*)
	echo "`basename $0`: unknown action: ${action}" >&2
	exit 1
	;;

esac

exit 0