github.com/goshafaq/sonic@v0.0.0-20231026082336-871835fb94c6/internal/jit/runtime.go (about)

     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/goshafaq/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  }