debug: Add --debug_server arg to open gdb on OpenOCD

Not as useful as I'd like because we don't connect until after examine()
has completed, and the test is likely to time out while debugging. But
good to have, and maybe I'll expand on it one day.

1 files changed, 9 insertions, 2 deletions

diff --git a/debug/testlib.py b/debug/testlib.py
index bbca9fe..67f2e5b 100644
--- a/debug/testlib.py
+++ b/debug/testlib.py
@@ -293,8 +293,9 @@ class Openocd:
     logname = logfile.name
 
     def __init__(self, server_cmd=None, config=None, debug=False, timeout=60,
-                 freertos=False):
+                 freertos=False, debug_openocd=False):
         self.timeout = timeout
+        self.debug_openocd = debug_openocd
 
         if server_cmd:
             cmd = shlex.split(server_cmd)
@@ -387,7 +388,7 @@ class Openocd:
                         self.gdb_ports.append(int(m.group(1)))
 
                     if "telnet server disabled" in line:
-                        return process
+                        break
 
                     if not messaged and time.time() - start > 1:
                         messaged = True
@@ -396,6 +397,12 @@ class Openocd:
                         raise Exception("Timed out waiting for OpenOCD to "
                                 "listen for gdb")
 
+            if self.debug_openocd:
+                # pylint: disable=consider-using-with
+                self.debugger = subprocess.Popen(["gnome-terminal", "-e",
+                                                  f"gdb --pid={process.pid}"])
+            return process
+
         except Exception:
             print_log(Openocd.logname)
             raise