helper/command: add macro CMD

Accessing the variable "cmd" in a COMMAND_HANDLER is confusing
because the variable definition is not visible in the prototype,
thus "cmd" can be identified by the reader as a global variable
defined somewhere else.

Add the new macro CMD to make more evident it is a part of the
COMMAND_HANDLER.

Change-Id: I8f63da593a931045cc404323f143b88c5c80ab5e
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5047
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

diff --git a/src/helper/command.h b/src/helper/command.h
index f9c02e57383878392115268c83022f568cc2f4a5..9aed2827c3ad2746562eeea8fb10e782d3dad3ab 100644 (file)
--- a/src/helper/command.h
+++ b/src/helper/command.h
@@ -121,6 +121,11 @@ struct command_invocation {
  */
 #define COMMAND_HELPER(name, extra ...) __COMMAND_HANDLER(name, extra)
 
+/**
+ * Use this macro to access the command being handled,
+ * rather than accessing the variable directly.  It may be moved.
+ */
+#define CMD (cmd)
 /**
  * Use this macro to access the context of the command being handled,
  * rather than accessing the variable directly.  It may be moved.