//     type Alias struct {
//         Tag  byte // 'A'
//         Pos  Pos
//         Type typeOff
//     }
//
//     // "Automatic" declaration of each typeparam
//     type TypeParam struct {
//         Tag        byte // 'P'
//         Pos        Pos
//         Implicit   bool
//         Constraint typeOff
//     }
//
// typeOff means a uvarint that either indicates a predeclared type,

func add(p unsafe.Pointer, x uintptr, whySafe string) unsafe.Pointer {
	return unsafe.Pointer(uintptr(p) + x)
}

// TypeOf returns the reflection Type that represents the dynamic type of i.
// If i is a nil interface value, TypeOf returns nil.
func TypeOf(i any) Type {
	return toType(abi.TypeOf(i))
}

func (t rtype) Implements(u Type) bool {
	if u == nil {
		panic("reflect: nil type passed to Type.Implements")
	}

		return t
	}
	res := md.types + uintptr(off)
	if res > md.etypes {
		println("runtime: typeOff", hex(off), "out of range", hex(md.types), "-", hex(md.etypes))
		throw("runtime: type offset out of range")
	}
	return (*_type)(unsafe.Pointer(res))
}

func (t rtype) typeOff(off typeOff) *_type {
	return resolveTypeOff(unsafe.Pointer(t.Type), off)
}

	syms = make(map[string]any, len(md.ptab))
	for _, ptab := range md.ptab {
		symName := resolveNameOff(unsafe.Pointer(md.types), ptab.name)
		t := toRType((*_type)(unsafe.Pointer(md.types))).typeOff(ptab.typ) // TODO can this stack of conversions be simpler?
		var val any
		valp := (*[2]unsafe.Pointer)(unsafe.Pointer(&val))
		(*valp)[0] = unsafe.Pointer(t)

		name := symName.Name()

	TFlagUnrolledBitmap TFlag = 1 << 4
)

// NameOff is the offset to a name from moduledata.types.  See resolveNameOff in runtime.
type NameOff int32

// TypeOff is the offset to a type from moduledata.types.  See resolveTypeOff in runtime.
type TypeOff int32

// TextOff is an offset from the top of a text section.  See (rtype).textOff in runtime.
type TextOff int32

// String returns the name of k.

// See go.dev/issue/67401.
//
//go:linkname reflect_resolveTypeOff reflect.resolveTypeOff
func reflect_resolveTypeOff(rtype unsafe.Pointer, off int32) unsafe.Pointer {
	return unsafe.Pointer(toRType((*_type)(rtype)).typeOff(typeOff(off)))
}

// reflect_resolveTextOff resolves a function pointer offset from a base type.
//
// reflect_resolveTextOff is for package reflect,
// but widely used packages access it using linkname.

}

func nameOffFor(t *abi.Type, off aNameOff) abi.Name {
	return toRType(t).nameOff(off)
}

func typeOffFor(t *abi.Type, off aTypeOff) *abi.Type {
	return toRType(t).typeOff(off)
}

func (t *interfaceType) typeOff(off aTypeOff) *abi.Type {
	return toRType(&t.Type).typeOff(off)
}

func (t *interfaceType) common() *abi.Type {
	return &t.Type
}

func (t *interfaceType) uncommon() *abi.UncommonType {

	if !ok {
		rt.pages = append(rt.pages, page)
	}

	e := peBaseRelocEntry{
		typeOff: uint16(off & 0xFFF),
	}

	// Set entry type
	switch r.Siz() {
	default:
		Exitf("unsupported relocation size %d\n", r.Siz)
	case 4:
		e.typeOff |= uint16(IMAGE_REL_BASED_HIGHLOW << 12)
	case 8:
		e.typeOff |= uint16(IMAGE_REL_BASED_DIR64 << 12)
	}

	b.entries = append(b.entries, e)

}

// pinnedTypemaps are the map[typeOff]*_type from the moduledata objects.
//
// These typemap objects are allocated at run time on the heap, but the
// only direct reference to them is in the moduledata, created by the
// linker and marked SNOPTRDATA so it is ignored by the GC.
//
// To make sure the map isn't collected, we keep a second reference here.
var pinnedTypemaps []map[typeOff]*_type

		i := &inter.Methods[k]
		itype := toRType(&inter.Type).typeOff(i.Typ)
		name := toRType(&inter.Type).nameOff(i.Name)
		iname := name.Name()
		ipkg := pkgPath(name)
		if ipkg == "" {
			ipkg = inter.PkgPath.Name()
		}
		for ; j < nt; j++ {
			t := &xmhdr[j]
			rtyp := toRType(typ)
			tname := rtyp.nameOff(t.Name)
			if rtyp.typeOff(t.Mtyp) == itype && tname.Name() == iname {
				pkgPath := pkgPath(tname)