.

vendor/github.com/cloudwego/iasm/x86_64/eface.go

@@ -0,0 +1,79 @@
+//
+// Copyright 2024 CloudWeGo Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package x86_64
+
+import (
+    `reflect`
+    `unsafe`
+)
+
+type _GoType struct {
+    size   uintptr
+    pdata  uintptr
+    hash   uint32
+    flags  uint8
+    align  uint8
+    falign uint8
+    kflags uint8
+    traits unsafe.Pointer
+    gcdata *byte
+    str    int32
+    ptrx   int32
+}
+
+const (
+    _KindMask = (1 << 5) - 1
+)
+
+func (self *_GoType) kind() reflect.Kind {
+    return reflect.Kind(self.kflags & _KindMask)
+}
+
+type _GoSlice struct {
+    ptr unsafe.Pointer
+    len int
+    cap int
+}
+
+type _GoEface struct {
+    vt  *_GoType
+    ptr unsafe.Pointer
+}
+
+func (self *_GoEface) kind() reflect.Kind {
+    if self.vt != nil {
+        return self.vt.kind()
+    } else {
+        return reflect.Invalid
+    }
+}
+
+func (self *_GoEface) toInt64() int64 {
+    if self.vt.size == 8 {
+        return *(*int64)(self.ptr)
+    } else if self.vt.size == 4 {
+        return int64(*(*int32)(self.ptr))
+    } else if self.vt.size == 2 {
+        return int64(*(*int16)(self.ptr))
+    } else {
+        return int64(*(*int8)(self.ptr))
+    }
+}
+
+func efaceOf(v interface{}) _GoEface {
+    return *(*_GoEface)(unsafe.Pointer(&v))
+}