SR_KSU_USER
#define CLKF_USERMODE(framep) ((framep)->sr & SR_KSU_USER)
#ifndef SR_KSU_USER
register_t protosr = SR_FR_32 | SR_XX | SR_UX | SR_KSU_USER | SR_EXL |
#define USERMODE(ps) (((ps) & SR_KSU_MASK) == SR_KSU_USER)