Structs in mach/ppc

• ppc_exception_state mach/ppc/thread_status.h:173
• ppc_float_state mach/ppc/thread_status.h:89
• ppc_saved_state mach/ppc/thread_status.h:108
• ppc_thread_state mach/ppc/thread_status.h:39
• sloc mach/ppc/simple_lock.h:41