You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.7 KiB
52 lines
1.7 KiB
// +build go1.16,!go1.17
|
|
|
|
// Copyright 2023 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 encoder
|
|
|
|
import (
|
|
`strconv`
|
|
|
|
`github.com/bytedance/sonic/internal/jit`
|
|
`github.com/twitchyliquid64/golang-asm/obj`
|
|
`github.com/twitchyliquid64/golang-asm/obj/x86`
|
|
)
|
|
|
|
var (
|
|
_V_writeBarrier = jit.Imm(int64(_runtime_writeBarrier))
|
|
|
|
_F_gcWriteBarrierAX = jit.Func(gcWriteBarrierAX)
|
|
)
|
|
|
|
func (self *_Assembler) WritePtr(i int, ptr obj.Addr, rec obj.Addr) {
|
|
if rec.Reg == x86.REG_AX || rec.Index == x86.REG_AX {
|
|
panic("rec contains AX!")
|
|
}
|
|
self.Emit("MOVQ", _V_writeBarrier, _R10)
|
|
self.Emit("CMPL", jit.Ptr(_R10, 0), jit.Imm(0))
|
|
self.Sjmp("JE", "_no_writeBarrier" + strconv.Itoa(i) + "_{n}")
|
|
self.Emit("MOVQ", ptr, _AX)
|
|
self.xsave(_DI)
|
|
self.Emit("LEAQ", rec, _DI)
|
|
self.Emit("MOVQ", _F_gcWriteBarrierAX, _R10) // MOVQ ${fn}, AX
|
|
self.Rjmp("CALL", _R10)
|
|
self.xload(_DI)
|
|
self.Sjmp("JMP", "_end_writeBarrier" + strconv.Itoa(i) + "_{n}")
|
|
self.Link("_no_writeBarrier" + strconv.Itoa(i) + "_{n}")
|
|
self.Emit("MOVQ", ptr, rec)
|
|
self.Link("_end_writeBarrier" + strconv.Itoa(i) + "_{n}")
|
|
}
|
|
|