return ERROR_OK;
 }
 
+static const struct command_registration cortex_m3_exec_command_handlers[] = {
+       {
+               .name = "disassemble",
+               .handler = &handle_cortex_m3_disassemble_command,
+               .mode = COMMAND_EXEC,
+               .help = "disassemble Thumb2 instructions",
+               .usage = "<address> [<count>]",
+       },
+       {
+               .name = "maskisr",
+               .handler = &handle_cortex_m3_mask_interrupts_command,
+               .mode = COMMAND_EXEC,
+               .help = "mask cortex_m3 interrupts",
+               .usage = "['on'|'off']",
+       },
+       {
+               .name = "vector_catch",
+               .handler = &handle_cortex_m3_vector_catch_command,
+               .mode = COMMAND_EXEC,
+               .help = "catch hardware vectors",
+               .usage = "['all'|'none'|<list>]",
+       },
+       COMMAND_REGISTRATION_DONE
+};
+static const struct command_registration cortex_m3_command_handlers[] = {
+       {
+               .name = "cortex_m3",
+               .mode = COMMAND_ANY,
+               .help = "Cortex-M3 command group",
+               .chain = cortex_m3_exec_command_handlers,
+       },
+       COMMAND_REGISTRATION_DONE
+};
+
 static int cortex_m3_register_commands(struct command_context *cmd_ctx)
 {
-       int retval;
-       struct command *cortex_m3_cmd;
-
-       retval = armv7m_register_commands(cmd_ctx);
-
-       cortex_m3_cmd = COMMAND_REGISTER(cmd_ctx, NULL, "cortex_m3",
-                       NULL, COMMAND_ANY, "cortex_m3 specific commands");
-
-       COMMAND_REGISTER(cmd_ctx, cortex_m3_cmd, "disassemble",
-                       handle_cortex_m3_disassemble_command, COMMAND_EXEC,
-                       "disassemble Thumb2 instructions <address> [<count>]");
-       COMMAND_REGISTER(cmd_ctx, cortex_m3_cmd, "maskisr",
-                       handle_cortex_m3_mask_interrupts_command, COMMAND_EXEC,
-                       "mask cortex_m3 interrupts ['on'|'off']");
-       COMMAND_REGISTER(cmd_ctx, cortex_m3_cmd, "vector_catch",
-                       handle_cortex_m3_vector_catch_command, COMMAND_EXEC,
-                       "catch hardware vectors ['all'|'none'|<list>]");
-
-       return retval;
+       armv7m_register_commands(cmd_ctx);
+       return register_commands(cmd_ctx, NULL, cortex_m3_command_handlers);
 }
 
 struct target_type cortexm3_target =