tester/tftp: Fix recovery of timed out TFTP sessions

- Add support to retry the tftp session if the target has not
  started

- Add target handlers for the test directives to allow recovery
  on error

1 files changed, 12 insertions, 0 deletions

diff --git a/tester/rt/gdb.py b/tester/rt/gdb.py
index 4abbca5..674c706 100644
--- a/tester/rt/gdb.py
+++ b/tester/rt/gdb.py
@@ -284,6 +284,18 @@ class gdb(object):
         finally:
             self._unlock('_kill')
 
+    def target_restart(self, started):
+        pass
+
+    def target_reset(self, started):
+        pass
+
+    def target_start(self):
+        pass
+
+    def target_end(self):
+        pass
+
     def gdb_expect(self):
         if self.trace:
             print('}}} gdb-expect')