fixed kernel malfunction when loading a program with mem_size > os_base .
tree22b8078d0aef3c9f9f75742331e9f37921ed2dde
drwxr-xr-x - _tools
-rw-r--r-- 15079 build.txt
drwxr-xr-x - contrib
drwxr-xr-x - data
drwxr-xr-x - drivers
drwxr-xr-x - kernel
drwxr-xr-x - programs
drwxr-xr-x - skins
-rw-r--r-- 2222 tup.config.template