func StructFieldSize(ptrSize int) int { return 3 * ptrSize }

// UncommonSize returns sizeof(UncommonType).  This currently does not depend on ptrSize.
// This exported function is in an internal package, so it may change to depend on ptrSize in the future.
func UncommonSize() uint64 { return 4 + 2 + 2 + 4 + 4 }

// TFlagOff returns the offset of Type.TFlag for a compilation target with a given ptrSize

func structfieldSize(arch *sys.Arch) int { return abi.StructFieldSize(arch.PtrSize) } // runtime.structfield
func uncommonSize(arch *sys.Arch) int    { return int(abi.UncommonSize()) }           // runtime.uncommontype

// Type.commonType.kind
func decodetypeKind(arch *sys.Arch, p []byte) abi.Kind {
	return abi.Kind(p[2*arch.PtrSize+7]) & abi.KindMask //  0x13 / 0x1f
}