| import subprocess |
| import os |
| import json |
| |
| |
| class VerilogParser: |
| def __init__(self, verilog_netlist, logger): |
| self.verilog_netlist = verilog_netlist |
| self.instances = {} |
| self.logger = logger |
| self.yosys_to_json() |
| |
| # self.instances[instance.name] = instance.module |
| |
| def yosys_to_json(self): |
| yosys_env = os.environ.copy() |
| script_path = os.path.dirname(os.path.abspath(__file__)) |
| yosys_env["YOSYS_VERILOG_IN"] = self.verilog_netlist |
| yosys_env["YOSYS_JSON_OUT"] = "./tmp.json" |
| self.logger.debug("running yosys ..") |
| process = subprocess.run( |
| f"yosys -c {script_path}/yosys/to-json.tcl".split(), |
| env=yosys_env, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| ) |
| if process.returncode: |
| self.logger.error(process.stdout.decode("utf-8")) |
| |
| self.logger.debug("reading json ..") |
| f = open("./tmp.json") |
| data = json.load(f) |
| f.close() |
| os.remove("./tmp.json") |
| module_name = os.path.basename(self.verilog_netlist) |
| module_name = os.path.splitext(module_name)[0] |
| self.logger.debug("parsing json ..") |
| full_cells = data["modules"][module_name]["cells"] |
| for cell in full_cells: |
| self.instances[cell] = full_cells[cell]["type"] |
