)

const (
	// TODO (khr, drchase) why aren't these in TFlag?  Investigate, fix if possible.
	KindDirectIface Kind = 1 << 5
	KindGCProg      Kind = 1 << 6 // Type.gc points to GC program
	KindMask        Kind = (1 << 5) - 1
)

// TFlag is used by a Type to signal what extra type information is
// available in the memory directly following the Type value.
type TFlag uint8

const (

// 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 TFlagOff(ptrSize int) int { return 2*ptrSize + 4 }

// ITabTypeOff returns the offset of ITab.Type for a compilation target with a given ptrSize

// Type.commonType.ptrdata
func decodetypePtrdata(arch *sys.Arch, p []byte) int64 {
	return int64(decodeInuxi(arch, p[arch.PtrSize:], arch.PtrSize)) // 0x8 / 0x10
}

// Type.commonType.tflag
func decodetypeHasUncommon(arch *sys.Arch, p []byte) bool {
	return abi.TFlag(p[abi.TFlagOff(arch.PtrSize)])&abi.TFlagUncommon != 0
}

// Type.FuncType.dotdotdot
func decodetypeFuncDotdotdot(arch *sys.Arch, p []byte) bool {

}

func (t rtype) string() string {
	s := t.nameOff(t.Str).Name()
	if t.TFlag&abi.TFlagExtraStar != 0 {
		return s[1:]
	}
	return s
}

func (t rtype) uncommon() *uncommontype {
	return t.Uncommon()
}

func (t rtype) name() string {
	if t.TFlag&abi.TFlagNamed == 0 {
		return ""
	}
	s := t.string()
	i := len(s) - 1
	sqBrackets := 0

			// as the 'u uncommonType' field won't be accessed except when
			// tflag&abi.TFlagUncommon is set.
			return addToCache(toType(t))
		}
	}

	typ.Str = resolveReflectName(newName(str, "", false, false))
	if isRegularMemory(toType(&typ.Type)) {
		typ.TFlag = abi.TFlagRegularMemory
	} else {
		typ.TFlag = 0
	}
	typ.Hash = hash
	typ.Size_ = size
	typ.PtrBytes = typeptrdata(&typ.Type)

//   - github.com/puzpuzpuz/xsync/v3
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname typehash
func typehash(t *_type, p unsafe.Pointer, h uintptr) uintptr {
	if t.TFlag&abi.TFlagRegularMemory != 0 {
		// Handle ptr sizes specially, see issue 37086.
		switch t.Size_ {
		case 4:
			return memhash32(p, h)
		case 8:
			return memhash64(p, h)
		default:

}

func (t rtype) uncommon() *uncommonType {
	return t.Uncommon()
}

func (t rtype) String() string {
	s := t.nameOff(t.Str).Name()
	if t.TFlag&abi.TFlagExtraStar != 0 {
		return s[1:]
	}
	return s
}

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

func (t rtype) exportedMethods() []abi.Method {
	ut := t.uncommon()
	if ut == nil {

		// current version of the importing package.
		tFlag := ""
		if e.importerIsTest {
			tFlag = " -t"
		}
		version := ""
		if e.importerVersion != "" {
			version = "@" + e.importerVersion
		}
		hint = fmt.Sprintf("; to add:\n\tgo get%s %s%s", tFlag, e.importer, version)
	}
	return message + hint
}

//
//go:linkname getitab
func getitab(inter *interfacetype, typ *_type, canfail bool) *itab {
	if len(inter.Methods) == 0 {
		throw("internal error - misuse of itab")
	}

	// easy case
	if typ.TFlag&abi.TFlagUncommon == 0 {
		if canfail {
			return nil
		}
		name := toRType(&inter.Type).nameOff(inter.Methods[0].Name)
		panic(&TypeAssertionError{nil, typ, &inter.Type, name.Name()})
	}

	var m *itab

			if debug.efence > 0 {
				s.limit = 0 // prevent mlookup from finding this span
				sysFault(unsafe.Pointer(s.base()), size)
			} else {
				mheap_.freeSpan(s)
			}
			if s.largeType != nil && s.largeType.TFlag&abi.TFlagUnrolledBitmap != 0 {
				// The unrolled GCProg bitmap is allocated separately.
				// Free the space for the unrolled bitmap.
				systemstack(func() {
					s := spanOf(uintptr(unsafe.Pointer(s.largeType)))