PERF_REG_CSKY_EXREGS0
[PERF_REG_CSKY_EXREGS0] = {-ENOENT, 16},
if (id >= PERF_REG_CSKY_EXREGS0 && (e_flags & EF_CSKY_ABIMASK) == EF_CSKY_ABIV2)
case PERF_REG_CSKY_EXREGS0: