S_SYS_NUM_CPUS
#define M_SYS_NUM_CPUS _SB_MAKEMASK(4, S_SYS_NUM_CPUS)
#define V_SYS_NUM_CPUS(x) _SB_MAKEVALUE(x, S_SYS_NUM_CPUS)
#define G_SYS_NUM_CPUS(x) _SB_GETVALUE(x, S_SYS_NUM_CPUS, M_SYS_NUM_CPUS)