run: generalize with main(), start porting trace-boot and qemu-trace2txt

qemu-trace2txt

@@ -1,14 +1,27 @@
-#!/usr/bin/env bash
-. "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/common"
-while getopts "${common_getopts_flags}" OPT; do
-  case "$OPT" in
-    ?)
-      common_getopts_case "$OPT"
-      ;;
-  esac
-done
-common_setup
-./qemu/scripts/simpletrace.py \
-  "${common_build_dir}/host-qemu-custom/trace-events-all" \
-  "${common_qemu_run_dir}/trace.bin" \
-> "${common_trace_txt_file}"
+#!/usr/bin/env python3
+
+import os
+import subprocess
+import sys
+
+import common
+
+def main():
+    cmd = [
+        os.path.join(common.qemu_src_dir, 'scripts/simpletrace.py'),
+        os.path.join(common.qemu_build_dir, 'trace-events-all'),
+        os.path.join(common.qemu_trace_file),
+    ]
+    return common.run_cmd(
+        cmd,
+        cmd_file=os.path.join(common.run_dir, 'qemu-trace2txt'),
+        out_file=common.qemu_trace_txt_file,
+        show_stdout=False,
+    )
+
+if __name__ == '__main__':
+    parser = common.get_argparse(argparse_args={
+        'description': 'Convert a QEMU `-trace exec_tb` to text form.'
+    })
+    args = common.setup(parser)
+    sys.exit(main())