#   This file is part of the 9086 project.
#
#   Copyright (c) 2023 Efthymios Kritikos
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
SOURCES=processor.v testbench.v memory.v registers.v alu.v
INCLUDES=proc_state_def.v alu_header.v config.v
VVP=processor.vvp

.PHONY: brainf
brainf: ${VVP} brainfuck.txt
	vvp ${VVP} +BOOT_CODE=brainfuck.txt
	grep -v '^//' memdump.txt | xxd -ps -c 2 -r > memdump.bin

.PHONY: run
run: ${VVP} boot_code.txt
	vvp ${VVP}

.PHONY: build
build: ${VVP}

.PHONY: wave
wave: ${VVP} brainfuck.txt
	vvp ${VVP} -lxt2  +BOOT_CODE=brainfuck.txt
	gtkwave test.lx2 gtkwave_savefile.gtkw
	grep -v '^//' memdump.txt | xxd -ps -c 2 -r > memdump.bin

${VVP} : ${SOURCES} ${INCLUDES}
	iverilog -g2012 ${SOURCES} -o $@

%.txt:%.bin
	dd if=/dev/zero bs=1 count=1200 of=$(subst .bin,.stage,$^) status=none
	dd if=$^ of=$(subst .bin,.stage,$^) conv=notrunc,nocreat status=none
	xxd -ps -c 2 $(subst .bin,.stage,$^) > $@
	rm $(subst .bin,.stage,$^)

%.bin:%.asm
	as86 -0 $< -b $@

.PHONY: disas
disas: brainfuck.bin
	objdump -D -b binary -m i8086 $^ | less

.PHONY: clean
clean:
	rm -f ${VVP} test.lx2 boot_code.txt boot_code.bin brainfuck.txt brainfuck.bin memdump.txt