west: runner: native_sim: add debugserver support

Support starting a gdb server on port 3333 for remote debugging.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

scripts/west_commands/runners/native_sim.py

@@ -6,16 +6,28 @@
 import argparse
 from runners.core import ZephyrBinaryRunner, RunnerCaps, RunnerConfig
 
+DEFAULT_GDB_PORT = 3333
+
 class NativeSimBinaryRunner(ZephyrBinaryRunner):
     """Runs the ELF binary under GDB."""
 
+    def __init__(self, cfg,
+                 tui=False,
+                 gdb_port=DEFAULT_GDB_PORT):
+        super().__init__(cfg)
+        if cfg.gdb is None:
+            self.gdb_cmd = None
+        else:
+            self.gdb_cmd = [cfg.gdb] + (['-tui'] if tui else [])
+        self.gdb_port = gdb_port
+
     @classmethod
     def name(cls):
         return 'native_sim'
 
     @classmethod
     def capabilities(cls):
-        return RunnerCaps(commands={'debug', 'flash'})
+        return RunnerCaps(commands={'debug', 'debugserver', 'flash'})
 
     @classmethod
     def do_add_parser(cls, parser: argparse.ArgumentParser):
@@ -30,6 +42,8 @@ def do_run(self, command: str, **kwargs):
             self.do_flash(**kwargs)
         elif command == 'debug':
             self.do_debug(**kwargs)
+        elif command == 'debugserver':
+            self.do_debugserver(**kwargs)
         else:
             assert False
 
@@ -49,8 +63,10 @@ def do_debug(self, **kwargs):
         if self.cfg.exe_file is None:
             raise ValueError("The provided RunnerConfig is missing the required field 'exe_file'.")
 
-        self.call([
-            self.cfg.gdb,
-            '--quiet',
-            self.cfg.exe_file,
-        ])
+        cmd = ([self.cfg.gdb, '--quiet', self.cfg.exe_file])
+        self.check_call(cmd)
+
+    def do_debugserver(self, **kwargs):
+        cmd = (['gdbserver', ':{}'.format(self.gdb_port), self.cfg.exe_file])
+
+        self.check_call(cmd)