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/*
* Copyright 2021 ByteDance Inc.
*
* 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 encoder
import (
"errors"
"reflect"
"unsafe"
"github.com/bytedance/sonic/internal/encoder/vars"
"github.com/bytedance/sonic/internal/encoder/x86"
"github.com/bytedance/sonic/internal/rt"
"github.com/bytedance/sonic/option"
)
func ForceUseJit() {
x86.SetCompiler(makeEncoderX86)
pretouchType = pretouchTypeX86
encodeTypedPointer = x86.EncodeTypedPointer
vars.UseVM = false
}
func init() {
if vars.UseVM {
ForceUseVM()
} else {
ForceUseJit()
}
}
var _KeepAlive struct {
rb *[]byte
vp unsafe.Pointer
sb *vars.Stack
fv uint64
err error
frame [x86.FP_offs]byte
}
var errCallShadow = errors.New("DON'T CALL THIS!")
// Faker func of _Encoder, used to export its stackmap as _Encoder's
func _Encoder_Shadow(rb *[]byte, vp unsafe.Pointer, sb *vars.Stack, fv uint64) (err error) {
// align to assembler_amd64.go: x86.FP_offs
var frame [x86.FP_offs]byte
// must keep all args and frames noticeable to GC
_KeepAlive.rb = rb
_KeepAlive.vp = vp
_KeepAlive.sb = sb
_KeepAlive.fv = fv
_KeepAlive.err = err
_KeepAlive.frame = frame
return errCallShadow
}
func makeEncoderX86(vt *rt.GoType, ex ...interface{}) (interface{}, error) {
pp, err := NewCompiler().Compile(vt.Pack(), ex[0].(bool))
if err != nil {
return nil, err
}
as := x86.NewAssembler(pp)
as.Name = vt.String()
return as.Load(), nil
}
func pretouchTypeX86(_vt reflect.Type, opts option.CompileOptions, v uint8) (map[reflect.Type]uint8, error) {
/* compile function */
compiler := NewCompiler().apply(opts)
/* find or compile */
vt := rt.UnpackType(_vt)
if val := vars.GetProgram(vt); val != nil {
return nil, nil
} else if _, err := vars.ComputeProgram(vt, makeEncoderX86, v == 1); err == nil {
return compiler.rec, nil
} else {
return nil, err
}
}
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