github.com/bytedance/sonic@v1.11.7-0.20240517092252-d2edb31b167b/internal/encoder/asm_stubs_amd64_go116.go (about) 1 // +build go1.16,!go1.17 2 3 // Copyright 2023 CloudWeGo Authors 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 17 package encoder 18 19 import ( 20 `strconv` 21 22 `github.com/bytedance/sonic/internal/jit` 23 `github.com/twitchyliquid64/golang-asm/obj` 24 `github.com/twitchyliquid64/golang-asm/obj/x86` 25 ) 26 27 var ( 28 _V_writeBarrier = jit.Imm(int64(_runtime_writeBarrier)) 29 30 _F_gcWriteBarrierAX = jit.Func(gcWriteBarrierAX) 31 ) 32 33 func (self *_Assembler) WritePtr(i int, ptr obj.Addr, rec obj.Addr) { 34 if rec.Reg == x86.REG_AX || rec.Index == x86.REG_AX { 35 panic("rec contains AX!") 36 } 37 self.Emit("MOVQ", _V_writeBarrier, _R10) 38 self.Emit("CMPL", jit.Ptr(_R10, 0), jit.Imm(0)) 39 self.Sjmp("JE", "_no_writeBarrier" + strconv.Itoa(i) + "_{n}") 40 self.Emit("MOVQ", ptr, _AX) 41 self.xsave(_DI) 42 self.Emit("LEAQ", rec, _DI) 43 self.Emit("MOVQ", _F_gcWriteBarrierAX, _R10) // MOVQ ${fn}, AX 44 self.Rjmp("CALL", _R10) 45 self.xload(_DI) 46 self.Sjmp("JMP", "_end_writeBarrier" + strconv.Itoa(i) + "_{n}") 47 self.Link("_no_writeBarrier" + strconv.Itoa(i) + "_{n}") 48 self.Emit("MOVQ", ptr, rec) 49 self.Link("_end_writeBarrier" + strconv.Itoa(i) + "_{n}") 50 } 51