No, RMXP and the GBA format are very different, and it took alot of work to make an RMXP format version of pokemon. So there is no current program to turn an RMXP file into a GBA file
could you quickly help me i am wondering is there some software that i can use to convert the file that RPG maker xp uses for the game that is created before or after compression that i can use to convert the file so that it can be used with a emulation device or something i.e. a GBA emulation?