XCHAL_NCP_SA_LIST  121 arch/xtensa/include/asm/coprocessor.h typedef struct { XCHAL_NCP_SA_LIST(0) } xtregs_opt_t
XCHAL_NCP_SA_LIST  123 arch/xtensa/include/asm/coprocessor.h typedef struct { XCHAL_NCP_SA_LIST(1) } xtregs_user_t