#   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/>.
#
TOP_LEVEL_SOURCE=system.v
SOURCES=processor.v memory.v registers.v alu.v decoder.v general.v biu.v execute.v
EVENT_SIM_TESTBENCH=testbench.v
VERILATOR_TESTBENCH=testbench.cpp
INCLUDES=exec_state_def.v alu_header.v config.v ucode_header.v error_header.v
SYSTEM_VVP=system.vvp
VERILATOR_BIN=obj_dir/Vsystem
BOOT_CODE=boot_code.txt
GTKWSAVE=../gtkwave_savefile.gtkw
MICROCODE=ucode.txt

NO_ASM=0
include ../common.mk

#build options
VERILATOR_OPTS += --cc --exe

#binary options
VERILATOR_OPTS += --trace-fst --threads 1 --autoflush

#linter options
VERILATOR_OPTS += -Wall --Wno-DECLFILENAME -Wno-SYNCASYNCNET  -Wno-MULTIDRIVEN

#optimisation options
VERILATOR_OPTS += -x-assign fast --x-initial fast
#For testing use:
#VERILATOR_OPTS += -x-assign unique --x-initial unique

# COMPILING
${SYSTEM_VVP} : ${TOP_LEVEL_SOURCE} ${SOURCES} ${INCLUDES} ${EVENT_SIM_TESTBENCH}
	${QUIET_IVERILOG}
	${Q}iverilog -g2012 -D CALCULATE_IPC -D OTUPUT_JSON_STATISTICS -o "$@" ${TOP_LEVEL_SOURCE} ${SOURCES} ${EVENT_SIM_TESTBENCH}

${VERILATOR_BIN}: ${VERILATOR_BIN}.mk
	${Q}make ${MAKEOPTS} OPT_FAST="-O2 -march=native -mtune=native" -C obj_dir -f ../verilator_makefile Vsystem

${VERILATOR_BIN}.mk: ${VERILATOR_TESTBENCH} ${TOP_LEVEL_SOURCE} ${SOURCES} ${INCLUDES}
	${QUIET_VERILATOR}
	${Q}verilator -DCALCULATE_IPC -DOTUPUT_JSON_STATISTICS ${VERILATOR_OPTS} $^

.PHONY: clean
clean:
	$(call QUIET_CLEAN,system)
	${Q}rm -rf ${SYSTEM_VVP} *.fst boot_code.txt boot_code.bin *memdump *memdumptxt obj_dir *json