forked from Imagelibrary/rtems
* shared/start/start.S, shared/start/preload.S: Make sure stack is 16-byte aligned and the TOS is tagged with a NULL pointer (used as a terminator when printing stack traces).
* shared/start/start.S, shared/start/preload.S: Make sure stack is 16-byte aligned and the TOS is tagged with a NULL pointer (used as a terminator when printing stack traces).