gtsocial-umbx

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runtime.go (1483B)

      1 /*
      2  * Copyright 2021 ByteDance Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package jit
     18 
     19 import (
     20     `reflect`
     21     `unsafe`
     22 
     23     `github.com/bytedance/sonic/internal/rt`
     24     `github.com/twitchyliquid64/golang-asm/obj`
     25 )
     26 
     27 //go:noescape
     28 //go:linkname getitab runtime.getitab
     29 //goland:noinspection ALL
     30 func getitab(inter *rt.GoType, typ *rt.GoType, canfail bool) *rt.GoItab
     31 
     32 func Func(f interface{}) obj.Addr {
     33     if p := rt.UnpackEface(f); p.Type.Kind() != reflect.Func {
     34         panic("f is not a function")
     35     } else {
     36         return Imm(*(*int64)(p.Value))
     37     }
     38 }
     39 
     40 func Type(t reflect.Type) obj.Addr {
     41     return Gtype(rt.UnpackType(t))
     42 }
     43 
     44 func Itab(i *rt.GoType, t reflect.Type) obj.Addr {
     45     return Imm(int64(uintptr(unsafe.Pointer(getitab(i, rt.UnpackType(t), false)))))
     46 }
     47 
     48 func Gitab(i *rt.GoItab) obj.Addr {
     49     return Imm(int64(uintptr(unsafe.Pointer(i))))
     50 }
     51 
     52 func Gtype(t *rt.GoType) obj.Addr {
     53     return Imm(int64(uintptr(unsafe.Pointer(t))))
     54 }