All symbols starting with `u' in osfmk/mach/i386

• uint32 osfmk/mach/i386/vm_types.h:151
• unsigned32 osfmk/mach/i386/machine_types.defs:63
• USER_CODE_SELECTOR osfmk/mach/i386/thread_status.h:421
• USER_DATA_SELECTOR osfmk/mach/i386/thread_status.h:422