tb: implement coverage reports

1 files changed, 16 insertions, 2 deletions

diff --git a/sim/sim.py b/sim/sim.py
index 5f64d43..e1dbd41 100755
--- a/sim/sim.py
+++ b/sim/sim.py
@@ -1,8 +1,19 @@
 #!/usr/bin/env python3
 
-import importlib.util, io, os, pathlib, random, selectors, signal, socket, subprocess, sys
+import argparse, importlib.util, io, os, pathlib, random, selectors, signal, socket, subprocess, sys
+
+parser = argparse.ArgumentParser()
+parser.add_argument('module_path')
+parser.add_argument('verilated')
+parser.add_argument('image')
+parser.add_argument('coverage_out', nargs='?')
+args = parser.parse_args()
+
+module_path = args.module_path
+verilated = args.verilated
+image = args.image
+coverage_out = args.coverage_out
 
-module_path, verilated, image = sys.argv[1:]
 test_name = pathlib.Path(module_path).stem
 module = None
 
@@ -390,6 +401,9 @@ exec_args.extend(['--control-fd', str(target_fd)])
 init_regs = None
 exec_args.append(image)
 
+if coverage_out:
+    exec_args.append(coverage_out)
+
 exec_args.append(f'+verilator+seed+{seed}')
 if not os.getenv('SIM_PULLX', 0):
     exec_args.append('+verilator+rand+reset+2')