- get_cpu was very broken; it didn't return anything, was static, and had   the wrong return type. - be sure to return something even after a bx_panic. compiler doesn't   know bx_panic is fatal.
- get_cpu was very broken; it didn't return anything, was static, and had
  the wrong return type.
- be sure to return something even after a bx_panic. compiler doesn't
  know bx_panic is fatal.

marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet