mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-23 04:06:39 +00:00
777 lines
39 KiB
Go
777 lines
39 KiB
Go
// +build go1.15,!go1.17
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/*
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* Copyright 2021 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package decoder
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import (
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`encoding/json`
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`fmt`
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`reflect`
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`strconv`
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`github.com/bytedance/sonic/internal/jit`
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`github.com/bytedance/sonic/internal/native`
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`github.com/bytedance/sonic/internal/native/types`
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`github.com/twitchyliquid64/golang-asm/obj`
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`github.com/twitchyliquid64/golang-asm/obj/x86`
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)
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/** Crucial Registers:
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*
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* ST(BX) : ro, decoder stack
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* DF(R10) : ro, decoder flags
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* EP(R11) : wo, error pointer
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* IP(R12) : ro, input pointer
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* IL(R13) : ro, input length
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* IC(R14) : rw, input cursor
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* VP(R15) : ro, value pointer (to an interface{})
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*/
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const (
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_VD_args = 8 // 8 bytes for passing arguments to this functions
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_VD_fargs = 64 // 64 bytes for passing arguments to other Go functions
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_VD_saves = 40 // 40 bytes for saving the registers before CALL instructions
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_VD_locals = 88 // 88 bytes for local variables
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)
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const (
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_VD_offs = _VD_fargs + _VD_saves + _VD_locals
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_VD_size = _VD_offs + 8 // 8 bytes for the parent frame pointer
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)
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var (
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_VAR_ss = _VAR_ss_Vt
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_VAR_df = jit.Ptr(_SP, _VD_fargs + _VD_saves)
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)
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var (
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_VAR_ss_Vt = jit.Ptr(_SP, _VD_fargs + _VD_saves + 8)
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_VAR_ss_Dv = jit.Ptr(_SP, _VD_fargs + _VD_saves + 16)
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_VAR_ss_Iv = jit.Ptr(_SP, _VD_fargs + _VD_saves + 24)
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_VAR_ss_Ep = jit.Ptr(_SP, _VD_fargs + _VD_saves + 32)
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_VAR_ss_Db = jit.Ptr(_SP, _VD_fargs + _VD_saves + 40)
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_VAR_ss_Dc = jit.Ptr(_SP, _VD_fargs + _VD_saves + 48)
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)
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var (
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_VAR_cs_LR = jit.Ptr(_SP, _VD_fargs + _VD_saves + 56)
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_VAR_cs_p = jit.Ptr(_SP, _VD_fargs + _VD_saves + 64)
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_VAR_cs_n = jit.Ptr(_SP, _VD_fargs + _VD_saves + 72)
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_VAR_cs_d = jit.Ptr(_SP, _VD_fargs + _VD_saves + 80)
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)
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type _ValueDecoder struct {
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jit.BaseAssembler
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}
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func (self *_ValueDecoder) build() uintptr {
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self.Init(self.compile)
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return *(*uintptr)(self.Load("decode_value", _VD_size, _VD_args, argPtrs_generic, localPtrs_generic))
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}
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/** Function Calling Helpers **/
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func (self *_ValueDecoder) save(r ...obj.Addr) {
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for i, v := range r {
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if i > _VD_saves / 8 - 1 {
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panic("too many registers to save")
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} else {
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self.Emit("MOVQ", v, jit.Ptr(_SP, _VD_fargs + int64(i) * 8))
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}
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}
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}
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func (self *_ValueDecoder) load(r ...obj.Addr) {
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for i, v := range r {
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if i > _VD_saves / 8 - 1 {
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panic("too many registers to load")
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} else {
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self.Emit("MOVQ", jit.Ptr(_SP, _VD_fargs + int64(i) * 8), v)
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}
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}
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}
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func (self *_ValueDecoder) call(fn obj.Addr) {
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self.Emit("MOVQ", fn, _AX) // MOVQ ${fn}, AX
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self.Rjmp("CALL", _AX) // CALL AX
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}
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func (self *_ValueDecoder) call_go(fn obj.Addr) {
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self.save(_REG_go...) // SAVE $REG_go
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self.call(fn) // CALL ${fn}
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self.load(_REG_go...) // LOAD $REG_go
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}
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/** Decoder Assembler **/
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const (
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_S_val = iota + 1
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_S_arr
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_S_arr_0
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_S_obj
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_S_obj_0
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_S_obj_delim
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_S_obj_sep
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)
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const (
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_S_omask_key = (1 << _S_obj_0) | (1 << _S_obj_sep)
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_S_omask_end = (1 << _S_obj_0) | (1 << _S_obj)
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_S_vmask = (1 << _S_val) | (1 << _S_arr_0)
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)
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const (
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_A_init_len = 1
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_A_init_cap = 16
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)
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const (
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_ST_Sp = 0
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_ST_Vt = _PtrBytes
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_ST_Vp = _PtrBytes * (types.MAX_RECURSE + 1)
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)
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var (
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_V_true = jit.Imm(int64(pbool(true)))
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_V_false = jit.Imm(int64(pbool(false)))
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_F_value = jit.Imm(int64(native.S_value))
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)
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var (
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_V_max = jit.Imm(int64(types.V_MAX))
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_E_eof = jit.Imm(int64(types.ERR_EOF))
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_E_invalid = jit.Imm(int64(types.ERR_INVALID_CHAR))
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_E_recurse = jit.Imm(int64(types.ERR_RECURSE_EXCEED_MAX))
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)
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var (
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_F_convTslice = jit.Func(convTslice)
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_F_convTstring = jit.Func(convTstring)
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_F_invalid_vtype = jit.Func(invalid_vtype)
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)
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var (
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_T_map = jit.Type(reflect.TypeOf((map[string]interface{})(nil)))
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_T_bool = jit.Type(reflect.TypeOf(false))
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_T_int64 = jit.Type(reflect.TypeOf(int64(0)))
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_T_eface = jit.Type(reflect.TypeOf((*interface{})(nil)).Elem())
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_T_slice = jit.Type(reflect.TypeOf(([]interface{})(nil)))
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_T_string = jit.Type(reflect.TypeOf(""))
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_T_number = jit.Type(reflect.TypeOf(json.Number("")))
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_T_float64 = jit.Type(reflect.TypeOf(float64(0)))
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)
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var _R_tab = map[int]string {
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'[': "_decode_V_ARRAY",
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'{': "_decode_V_OBJECT",
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':': "_decode_V_KEY_SEP",
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',': "_decode_V_ELEM_SEP",
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']': "_decode_V_ARRAY_END",
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'}': "_decode_V_OBJECT_END",
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}
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func (self *_ValueDecoder) compile() {
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self.Emit("SUBQ", jit.Imm(_VD_size), _SP) // SUBQ $_VD_size, SP
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self.Emit("MOVQ", _BP, jit.Ptr(_SP, _VD_offs)) // MOVQ BP, _VD_offs(SP)
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self.Emit("LEAQ", jit.Ptr(_SP, _VD_offs), _BP) // LEAQ _VD_offs(SP), BP
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/* initialize the state machine */
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self.Emit("XORL", _CX, _CX) // XORL CX, CX
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self.Emit("MOVQ", _DF, _VAR_df) // MOVQ DF, df
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/* initialize digital buffer first */
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self.Emit("MOVQ", jit.Imm(_MaxDigitNums), _VAR_ss_Dc) // MOVQ $_MaxDigitNums, ss.Dcap
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self.Emit("LEAQ", jit.Ptr(_ST, _DbufOffset), _AX) // LEAQ _DbufOffset(ST), AX
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self.Emit("MOVQ", _AX, _VAR_ss_Db) // MOVQ AX, ss.Dbuf
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/* add ST offset */
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self.Emit("ADDQ", jit.Imm(_FsmOffset), _ST) // ADDQ _FsmOffset, _ST
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self.Emit("MOVQ", _CX, jit.Ptr(_ST, _ST_Sp)) // MOVQ CX, ST.Sp
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self.WriteRecNotAX(0, _VP, jit.Ptr(_ST, _ST_Vp), false) // MOVQ VP, ST.Vp[0]
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self.Emit("MOVQ", jit.Imm(_S_val), jit.Ptr(_ST, _ST_Vt)) // MOVQ _S_val, ST.Vt[0]
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self.Sjmp("JMP" , "_next") // JMP _next
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/* set the value from previous round */
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self.Link("_set_value") // _set_value:
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self.Emit("MOVL" , jit.Imm(_S_vmask), _DX) // MOVL _S_vmask, DX
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self.Emit("MOVQ" , jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
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self.Emit("MOVQ" , jit.Sib(_ST, _CX, 8, _ST_Vt), _AX) // MOVQ ST.Vt[CX], AX
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self.Emit("BTQ" , _AX, _DX) // BTQ AX, DX
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self.Sjmp("JNC" , "_vtype_error") // JNC _vtype_error
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self.Emit("XORL" , _SI, _SI) // XORL SI, SI
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self.Emit("SUBQ" , jit.Imm(1), jit.Ptr(_ST, _ST_Sp)) // SUBQ $1, ST.Sp
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self.Emit("XCHGQ", jit.Sib(_ST, _CX, 8, _ST_Vp), _SI) // XCHGQ ST.Vp[CX], SI
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self.Emit("MOVQ" , _R8, jit.Ptr(_SI, 0)) // MOVQ R8, (SI)
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self.WriteRecNotAX(1, _R9, jit.Ptr(_SI, 8), false) // MOVQ R9, 8(SI)
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/* check for value stack */
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self.Link("_next") // _next:
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self.Emit("MOVQ" , jit.Ptr(_ST, _ST_Sp), _AX) // MOVQ ST.Sp, AX
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self.Emit("TESTQ", _AX, _AX) // TESTQ AX, AX
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self.Sjmp("JS" , "_return") // JS _return
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/* fast path: test up to 4 characters manually */
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self.Emit("CMPQ" , _IC, _IL) // CMPQ IC, IL
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self.Sjmp("JAE" , "_decode_V_EOF") // JAE _decode_V_EOF
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self.Emit("MOVBQZX", jit.Sib(_IP, _IC, 1, 0), _AX) // MOVBQZX (IP)(IC), AX
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self.Emit("MOVQ" , jit.Imm(_BM_space), _DX) // MOVQ _BM_space, DX
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self.Emit("CMPQ" , _AX, jit.Imm(' ')) // CMPQ AX, $' '
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self.Sjmp("JA" , "_decode_fast") // JA _decode_fast
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self.Emit("BTQ" , _AX, _DX) // BTQ _AX, _DX
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self.Sjmp("JNC" , "_decode_fast") // JNC _decode_fast
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self.Emit("ADDQ" , jit.Imm(1), _IC) // ADDQ $1, IC
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/* at least 1 to 3 spaces */
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for i := 0; i < 3; i++ {
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self.Emit("CMPQ" , _IC, _IL) // CMPQ IC, IL
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self.Sjmp("JAE" , "_decode_V_EOF") // JAE _decode_V_EOF
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self.Emit("MOVBQZX", jit.Sib(_IP, _IC, 1, 0), _AX) // MOVBQZX (IP)(IC), AX
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self.Emit("CMPQ" , _AX, jit.Imm(' ')) // CMPQ AX, $' '
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self.Sjmp("JA" , "_decode_fast") // JA _decode_fast
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self.Emit("BTQ" , _AX, _DX) // BTQ _AX, _DX
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self.Sjmp("JNC" , "_decode_fast") // JNC _decode_fast
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self.Emit("ADDQ" , jit.Imm(1), _IC) // ADDQ $1, IC
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}
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/* at least 4 spaces */
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self.Emit("CMPQ" , _IC, _IL) // CMPQ IC, IL
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self.Sjmp("JAE" , "_decode_V_EOF") // JAE _decode_V_EOF
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self.Emit("MOVBQZX", jit.Sib(_IP, _IC, 1, 0), _AX) // MOVBQZX (IP)(IC), AX
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/* fast path: use lookup table to select decoder */
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self.Link("_decode_fast") // _decode_fast:
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self.Byte(0x48, 0x8d, 0x3d) // LEAQ ?(PC), DI
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self.Sref("_decode_tab", 4) // .... &_decode_tab
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self.Emit("MOVLQSX", jit.Sib(_DI, _AX, 4, 0), _AX) // MOVLQSX (DI)(AX*4), AX
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self.Emit("TESTQ" , _AX, _AX) // TESTQ AX, AX
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self.Sjmp("JZ" , "_decode_native") // JZ _decode_native
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self.Emit("ADDQ" , jit.Imm(1), _IC) // ADDQ $1, IC
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self.Emit("ADDQ" , _DI, _AX) // ADDQ DI, AX
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self.Rjmp("JMP" , _AX) // JMP AX
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/* decode with native decoder */
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self.Link("_decode_native") // _decode_native:
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self.Emit("MOVQ", _IP, _DI) // MOVQ IP, DI
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self.Emit("MOVQ", _IL, _SI) // MOVQ IL, SI
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self.Emit("MOVQ", _IC, _DX) // MOVQ IC, DX
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self.Emit("LEAQ", _VAR_ss, _CX) // LEAQ ss, CX
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self.Emit("MOVQ", _VAR_df, _R8) // MOVQ $df, R8
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self.Emit("BTSQ", jit.Imm(_F_allow_control), _R8) // ANDQ $1<<_F_allow_control, R8
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self.call(_F_value) // CALL value
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self.Emit("MOVQ", _AX, _IC) // MOVQ AX, IC
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/* check for errors */
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self.Emit("MOVQ" , _VAR_ss_Vt, _AX) // MOVQ ss.Vt, AX
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self.Emit("TESTQ", _AX, _AX) // TESTQ AX, AX
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self.Sjmp("JS" , "_parsing_error")
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self.Sjmp("JZ" , "_invalid_vtype") // JZ _invalid_vtype
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self.Emit("CMPQ" , _AX, _V_max) // CMPQ AX, _V_max
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self.Sjmp("JA" , "_invalid_vtype") // JA _invalid_vtype
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/* jump table selector */
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self.Byte(0x48, 0x8d, 0x3d) // LEAQ ?(PC), DI
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self.Sref("_switch_table", 4) // .... &_switch_table
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self.Emit("MOVLQSX", jit.Sib(_DI, _AX, 4, -4), _AX) // MOVLQSX -4(DI)(AX*4), AX
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self.Emit("ADDQ" , _DI, _AX) // ADDQ DI, AX
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self.Rjmp("JMP" , _AX) // JMP AX
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/** V_EOF **/
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self.Link("_decode_V_EOF") // _decode_V_EOF:
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self.Emit("MOVL", _E_eof, _EP) // MOVL _E_eof, EP
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self.Sjmp("JMP" , "_error") // JMP _error
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/** V_NULL **/
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self.Link("_decode_V_NULL") // _decode_V_NULL:
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self.Emit("XORL", _R8, _R8) // XORL R8, R8
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self.Emit("XORL", _R9, _R9) // XORL R9, R9
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self.Emit("LEAQ", jit.Ptr(_IC, -4), _DI) // LEAQ -4(IC), DI
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self.Sjmp("JMP" , "_set_value") // JMP _set_value
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/** V_TRUE **/
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self.Link("_decode_V_TRUE") // _decode_V_TRUE:
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self.Emit("MOVQ", _T_bool, _R8) // MOVQ _T_bool, R8
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// TODO: maybe modified by users?
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self.Emit("MOVQ", _V_true, _R9) // MOVQ _V_true, R9
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self.Emit("LEAQ", jit.Ptr(_IC, -4), _DI) // LEAQ -4(IC), DI
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self.Sjmp("JMP" , "_set_value") // JMP _set_value
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/** V_FALSE **/
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self.Link("_decode_V_FALSE") // _decode_V_FALSE:
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self.Emit("MOVQ", _T_bool, _R8) // MOVQ _T_bool, R8
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self.Emit("MOVQ", _V_false, _R9) // MOVQ _V_false, R9
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self.Emit("LEAQ", jit.Ptr(_IC, -5), _DI) // LEAQ -5(IC), DI
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self.Sjmp("JMP" , "_set_value") // JMP _set_value
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/** V_ARRAY **/
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self.Link("_decode_V_ARRAY") // _decode_V_ARRAY
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self.Emit("MOVL", jit.Imm(_S_vmask), _DX) // MOVL _S_vmask, DX
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self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
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self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vt), _AX) // MOVQ ST.Vt[CX], AX
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self.Emit("BTQ" , _AX, _DX) // BTQ AX, DX
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self.Sjmp("JNC" , "_invalid_char") // JNC _invalid_char
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/* create a new array */
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self.Emit("MOVQ", _T_eface, _AX) // MOVQ _T_eface, AX
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self.Emit("MOVQ", _AX, jit.Ptr(_SP, 0)) // MOVQ AX, (SP)
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self.Emit("MOVQ", jit.Imm(_A_init_len), jit.Ptr(_SP, 8)) // MOVQ _A_init_len, 8(SP)
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self.Emit("MOVQ", jit.Imm(_A_init_cap), jit.Ptr(_SP, 16)) // MOVQ _A_init_cap, 16(SP)
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self.call_go(_F_makeslice) // CALL_GO runtime.makeslice
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self.Emit("MOVQ", jit.Ptr(_SP, 24), _DX) // MOVQ 24(SP), DX
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/* pack into an interface */
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self.Emit("MOVQ", _DX, jit.Ptr(_SP, 0)) // MOVQ DX, (SP)
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self.Emit("MOVQ", jit.Imm(_A_init_len), jit.Ptr(_SP, 8)) // MOVQ _A_init_len, 8(SP)
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self.Emit("MOVQ", jit.Imm(_A_init_cap), jit.Ptr(_SP, 16)) // MOVQ _A_init_cap, 16(SP)
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self.call_go(_F_convTslice) // CALL_GO runtime.convTslice
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self.Emit("MOVQ", jit.Ptr(_SP, 24), _R8) // MOVQ 24(SP), R8
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/* replace current state with an array */
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self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
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self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vp), _SI) // MOVQ ST.Vp[CX], SI
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self.Emit("MOVQ", jit.Imm(_S_arr), jit.Sib(_ST, _CX, 8, _ST_Vt)) // MOVQ _S_arr, ST.Vt[CX]
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self.Emit("MOVQ", _T_slice, _AX) // MOVQ _T_slice, AX
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self.Emit("MOVQ", _AX, jit.Ptr(_SI, 0)) // MOVQ AX, (SI)
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self.WriteRecNotAX(2, _R8, jit.Ptr(_SI, 8), false) // MOVQ R8, 8(SI)
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/* add a new slot for the first element */
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self.Emit("ADDQ", jit.Imm(1), _CX) // ADDQ $1, CX
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self.Emit("CMPQ", _CX, jit.Imm(types.MAX_RECURSE)) // CMPQ CX, ${types.MAX_RECURSE}
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self.Sjmp("JAE" , "_stack_overflow") // JA _stack_overflow
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self.Emit("MOVQ", jit.Ptr(_R8, 0), _AX) // MOVQ (R8), AX
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self.Emit("MOVQ", _CX, jit.Ptr(_ST, _ST_Sp)) // MOVQ CX, ST.Sp
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self.WritePtrAX(3, jit.Sib(_ST, _CX, 8, _ST_Vp), false) // MOVQ AX, ST.Vp[CX]
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self.Emit("MOVQ", jit.Imm(_S_arr_0), jit.Sib(_ST, _CX, 8, _ST_Vt)) // MOVQ _S_arr_0, ST.Vt[CX]
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/** V_OBJECT **/
|
|
self.Link("_decode_V_OBJECT") // _decode_V_OBJECT:
|
|
self.Emit("MOVL", jit.Imm(_S_vmask), _DX) // MOVL _S_vmask, DX
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vt), _AX) // MOVQ ST.Vt[CX], AX
|
|
self.Emit("BTQ" , _AX, _DX) // BTQ AX, DX
|
|
self.Sjmp("JNC" , "_invalid_char") // JNC _invalid_char
|
|
self.call_go(_F_makemap_small) // CALL_GO runtime.makemap_small
|
|
self.Emit("MOVQ", jit.Ptr(_SP, 0), _AX) // MOVQ (SP), AX
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Imm(_S_obj_0), jit.Sib(_ST, _CX, 8, _ST_Vt)) // MOVQ _S_obj, ST.Vt[CX]
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vp), _SI) // MOVQ ST.Vp[CX], SI
|
|
self.Emit("MOVQ", _T_map, _DX) // MOVQ _T_map, DX
|
|
self.Emit("MOVQ", _DX, jit.Ptr(_SI, 0)) // MOVQ DX, (SI)
|
|
self.WritePtrAX(4, jit.Ptr(_SI, 8), false) // MOVQ AX, 8(SI)
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/** V_STRING **/
|
|
self.Link("_decode_V_STRING") // _decode_V_STRING:
|
|
self.Emit("MOVQ", _VAR_ss_Iv, _CX) // MOVQ ss.Iv, CX
|
|
self.Emit("MOVQ", _IC, _AX) // MOVQ IC, AX
|
|
self.Emit("SUBQ", _CX, _AX) // SUBQ CX, AX
|
|
|
|
/* check for escapes */
|
|
self.Emit("CMPQ", _VAR_ss_Ep, jit.Imm(-1)) // CMPQ ss.Ep, $-1
|
|
self.Sjmp("JNE" , "_unquote") // JNE _unquote
|
|
self.Emit("SUBQ", jit.Imm(1), _AX) // SUBQ $1, AX
|
|
self.Emit("LEAQ", jit.Sib(_IP, _CX, 1, 0), _R8) // LEAQ (IP)(CX), R8
|
|
self.Byte(0x48, 0x8d, 0x3d) // LEAQ (PC), DI
|
|
self.Sref("_copy_string_end", 4)
|
|
self.Emit("BTQ", jit.Imm(_F_copy_string), _VAR_df)
|
|
self.Sjmp("JC", "copy_string")
|
|
self.Link("_copy_string_end")
|
|
self.Emit("XORL", _DX, _DX) // XORL DX, DX
|
|
/* strings with no escape sequences */
|
|
self.Link("_noescape") // _noescape:
|
|
self.Emit("MOVL", jit.Imm(_S_omask_key), _DI) // MOVL _S_omask, DI
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vt), _SI) // MOVQ ST.Vt[CX], SI
|
|
self.Emit("BTQ" , _SI, _DI) // BTQ SI, DI
|
|
self.Sjmp("JC" , "_object_key") // JC _object_key
|
|
|
|
/* check for pre-packed strings, avoid 1 allocation */
|
|
self.Emit("TESTQ", _DX, _DX) // TESTQ DX, DX
|
|
self.Sjmp("JNZ" , "_packed_str") // JNZ _packed_str
|
|
self.Emit("MOVQ" , _R8, jit.Ptr(_SP, 0)) // MOVQ R8, (SP)
|
|
self.Emit("MOVQ" , _AX, jit.Ptr(_SP, 8)) // MOVQ AX, 8(SP)
|
|
self.call_go(_F_convTstring) // CALL_GO runtime.convTstring
|
|
self.Emit("MOVQ" , jit.Ptr(_SP, 16), _R9) // MOVQ 16(SP), R9
|
|
|
|
/* packed string already in R9 */
|
|
self.Link("_packed_str") // _packed_str:
|
|
self.Emit("MOVQ", _T_string, _R8) // MOVQ _T_string, R8
|
|
self.Emit("MOVQ", _VAR_ss_Iv, _DI) // MOVQ ss.Iv, DI
|
|
self.Emit("SUBQ", jit.Imm(1), _DI) // SUBQ $1, DI
|
|
self.Sjmp("JMP" , "_set_value") // JMP _set_value
|
|
|
|
/* the string is an object key, get the map */
|
|
self.Link("_object_key")
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vp), _SI) // MOVQ ST.Vp[CX], SI
|
|
self.Emit("MOVQ", jit.Ptr(_SI, 8), _SI) // MOVQ 8(SI), SI
|
|
|
|
/* add a new delimiter */
|
|
self.Emit("ADDQ", jit.Imm(1), _CX) // ADDQ $1, CX
|
|
self.Emit("CMPQ", _CX, jit.Imm(types.MAX_RECURSE)) // CMPQ CX, ${types.MAX_RECURSE}
|
|
self.Sjmp("JAE" , "_stack_overflow") // JA _stack_overflow
|
|
self.Emit("MOVQ", _CX, jit.Ptr(_ST, _ST_Sp)) // MOVQ CX, ST.Sp
|
|
self.Emit("MOVQ", jit.Imm(_S_obj_delim), jit.Sib(_ST, _CX, 8, _ST_Vt)) // MOVQ _S_obj_delim, ST.Vt[CX]
|
|
|
|
/* add a new slot int the map */
|
|
self.Emit("MOVQ", _T_map, _DX) // MOVQ _T_map, DX
|
|
self.Emit("MOVQ", _DX, jit.Ptr(_SP, 0)) // MOVQ DX, (SP)
|
|
self.Emit("MOVQ", _SI, jit.Ptr(_SP, 8)) // MOVQ SI, 8(SP)
|
|
self.Emit("MOVQ", _R8, jit.Ptr(_SP, 16)) // MOVQ R9, 16(SP)
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SP, 24)) // MOVQ AX, 24(SP)
|
|
self.call_go(_F_mapassign_faststr) // CALL_GO runtime.mapassign_faststr
|
|
self.Emit("MOVQ", jit.Ptr(_SP, 32), _AX) // MOVQ 32(SP), AX
|
|
|
|
/* add to the pointer stack */
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.WritePtrAX(6, jit.Sib(_ST, _CX, 8, _ST_Vp), false) // MOVQ AX, ST.Vp[CX]
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/* allocate memory to store the string header and unquoted result */
|
|
self.Link("_unquote") // _unquote:
|
|
self.Emit("ADDQ", jit.Imm(15), _AX) // ADDQ $15, AX
|
|
self.Emit("MOVQ", _T_byte, _CX) // MOVQ _T_byte, CX
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SP, 0)) // MOVQ AX, (SP)
|
|
self.Emit("MOVQ", _CX, jit.Ptr(_SP, 8)) // MOVQ CX, 8(SP)
|
|
self.Emit("MOVB", jit.Imm(0), jit.Ptr(_SP, 16)) // MOVB $0, 16(SP)
|
|
self.call_go(_F_mallocgc) // CALL_GO runtime.mallocgc
|
|
self.Emit("MOVQ", jit.Ptr(_SP, 24), _R9) // MOVQ 24(SP), R9
|
|
|
|
/* prepare the unquoting parameters */
|
|
self.Emit("MOVQ" , _VAR_ss_Iv, _CX) // MOVQ ss.Iv, CX
|
|
self.Emit("LEAQ" , jit.Sib(_IP, _CX, 1, 0), _DI) // LEAQ (IP)(CX), DI
|
|
self.Emit("NEGQ" , _CX) // NEGQ CX
|
|
self.Emit("LEAQ" , jit.Sib(_IC, _CX, 1, -1), _SI) // LEAQ -1(IC)(CX), SI
|
|
self.Emit("LEAQ" , jit.Ptr(_R9, 16), _DX) // LEAQ 16(R8), DX
|
|
self.Emit("LEAQ" , _VAR_ss_Ep, _CX) // LEAQ ss.Ep, CX
|
|
self.Emit("XORL" , _R8, _R8) // XORL R8, R8
|
|
self.Emit("BTQ" , jit.Imm(_F_disable_urc), _VAR_df) // BTQ ${_F_disable_urc}, fv
|
|
self.Emit("SETCC", _R8) // SETCC R8
|
|
self.Emit("SHLQ" , jit.Imm(types.B_UNICODE_REPLACE), _R8) // SHLQ ${types.B_UNICODE_REPLACE}, R8
|
|
|
|
/* unquote the string, with R9 been preserved */
|
|
self.save(_R9) // SAVE R9
|
|
self.call(_F_unquote) // CALL unquote
|
|
self.load(_R9) // LOAD R9
|
|
|
|
/* check for errors */
|
|
self.Emit("TESTQ", _AX, _AX) // TESTQ AX, AX
|
|
self.Sjmp("JS" , "_unquote_error") // JS _unquote_error
|
|
self.Emit("MOVL" , jit.Imm(1), _DX) // MOVL $1, DX
|
|
self.Emit("LEAQ" , jit.Ptr(_R9, 16), _R8) // ADDQ $16, R8
|
|
self.Emit("MOVQ" , _R8, jit.Ptr(_R9, 0)) // MOVQ R8, (R9)
|
|
self.Emit("MOVQ" , _AX, jit.Ptr(_R9, 8)) // MOVQ AX, 8(R9)
|
|
self.Sjmp("JMP" , "_noescape") // JMP _noescape
|
|
|
|
/** V_DOUBLE **/
|
|
self.Link("_decode_V_DOUBLE") // _decode_V_DOUBLE:
|
|
self.Emit("BTQ" , jit.Imm(_F_use_number), _VAR_df) // BTQ _F_use_number, df
|
|
self.Sjmp("JC" , "_use_number") // JC _use_number
|
|
self.Emit("MOVSD", _VAR_ss_Dv, _X0) // MOVSD ss.Dv, X0
|
|
self.Sjmp("JMP" , "_use_float64") // JMP _use_float64
|
|
|
|
/** V_INTEGER **/
|
|
self.Link("_decode_V_INTEGER") // _decode_V_INTEGER:
|
|
self.Emit("BTQ" , jit.Imm(_F_use_number), _VAR_df) // BTQ _F_use_number, df
|
|
self.Sjmp("JC" , "_use_number") // JC _use_number
|
|
self.Emit("BTQ" , jit.Imm(_F_use_int64), _VAR_df) // BTQ _F_use_int64, df
|
|
self.Sjmp("JC" , "_use_int64") // JC _use_int64
|
|
self.Emit("MOVQ" , _VAR_ss_Iv, _AX) // MOVQ ss.Iv, AX
|
|
self.Emit("CVTSQ2SD", _AX, _X0) // CVTSQ2SD AX, X0
|
|
|
|
/* represent numbers as `float64` */
|
|
self.Link("_use_float64") // _use_float64:
|
|
self.Emit("MOVSD", _X0, jit.Ptr(_SP, 0)) // MOVSD X0, (SP)
|
|
self.call_go(_F_convT64) // CALL_GO runtime.convT64
|
|
self.Emit("MOVQ" , _T_float64, _R8) // MOVQ _T_float64, R8
|
|
self.Emit("MOVQ" , jit.Ptr(_SP, 8), _R9) // MOVQ 8(SP), R9
|
|
self.Emit("MOVQ" , _VAR_ss_Ep, _DI) // MOVQ ss.Ep, DI
|
|
self.Sjmp("JMP" , "_set_value") // JMP _set_value
|
|
|
|
/* represent numbers as `json.Number` */
|
|
self.Link("_use_number") // _use_number
|
|
self.Emit("MOVQ", _VAR_ss_Ep, _AX) // MOVQ ss.Ep, AX
|
|
self.Emit("LEAQ", jit.Sib(_IP, _AX, 1, 0), _SI) // LEAQ (IP)(AX), SI
|
|
self.Emit("MOVQ", _IC, _CX) // MOVQ IC, CX
|
|
self.Emit("SUBQ", _AX, _CX) // SUBQ AX, CX
|
|
self.Emit("MOVQ", _SI, jit.Ptr(_SP, 0)) // MOVQ SI, (SP)
|
|
self.Emit("MOVQ", _CX, jit.Ptr(_SP, 8)) // MOVQ CX, 8(SP)
|
|
self.call_go(_F_convTstring) // CALL_GO runtime.convTstring
|
|
self.Emit("MOVQ", _T_number, _R8) // MOVQ _T_number, R8
|
|
self.Emit("MOVQ", jit.Ptr(_SP, 16), _R9) // MOVQ 16(SP), R9
|
|
self.Emit("MOVQ", _VAR_ss_Ep, _DI) // MOVQ ss.Ep, DI
|
|
self.Sjmp("JMP" , "_set_value") // JMP _set_value
|
|
|
|
/* represent numbers as `int64` */
|
|
self.Link("_use_int64") // _use_int64:
|
|
self.Emit("MOVQ", _VAR_ss_Iv, _AX) // MOVQ ss.Iv, AX
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SP, 0)) // MOVQ AX, (SP)
|
|
self.call_go(_F_convT64) // CALL_GO runtime.convT64
|
|
self.Emit("MOVQ", _T_int64, _R8) // MOVQ _T_int64, R8
|
|
self.Emit("MOVQ", jit.Ptr(_SP, 8), _R9) // MOVQ 8(SP), R9
|
|
self.Emit("MOVQ", _VAR_ss_Ep, _DI) // MOVQ ss.Ep, DI
|
|
self.Sjmp("JMP" , "_set_value") // JMP _set_value
|
|
|
|
/** V_KEY_SEP **/
|
|
self.Link("_decode_V_KEY_SEP") // _decode_V_KEY_SEP:
|
|
// self.Byte(0xcc)
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vt), _AX) // MOVQ ST.Vt[CX], AX
|
|
self.Emit("CMPQ", _AX, jit.Imm(_S_obj_delim)) // CMPQ AX, _S_obj_delim
|
|
self.Sjmp("JNE" , "_invalid_char") // JNE _invalid_char
|
|
self.Emit("MOVQ", jit.Imm(_S_val), jit.Sib(_ST, _CX, 8, _ST_Vt)) // MOVQ _S_val, ST.Vt[CX]
|
|
self.Emit("MOVQ", jit.Imm(_S_obj), jit.Sib(_ST, _CX, 8, _ST_Vt - 8)) // MOVQ _S_obj, ST.Vt[CX - 1]
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/** V_ELEM_SEP **/
|
|
self.Link("_decode_V_ELEM_SEP") // _decode_V_ELEM_SEP:
|
|
self.Emit("MOVQ" , jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ" , jit.Sib(_ST, _CX, 8, _ST_Vt), _AX) // MOVQ ST.Vt[CX], AX
|
|
self.Emit("CMPQ" , _AX, jit.Imm(_S_arr)) // CMPQ _AX, _S_arr
|
|
self.Sjmp("JE" , "_array_sep") // JZ _next
|
|
self.Emit("CMPQ" , _AX, jit.Imm(_S_obj)) // CMPQ _AX, _S_arr
|
|
self.Sjmp("JNE" , "_invalid_char") // JNE _invalid_char
|
|
self.Emit("MOVQ" , jit.Imm(_S_obj_sep), jit.Sib(_ST, _CX, 8, _ST_Vt))
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/* arrays */
|
|
self.Link("_array_sep")
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vp), _SI) // MOVQ ST.Vp[CX], SI
|
|
self.Emit("MOVQ", jit.Ptr(_SI, 8), _SI) // MOVQ 8(SI), SI
|
|
self.Emit("MOVQ", jit.Ptr(_SI, 8), _DX) // MOVQ 8(SI), DX
|
|
self.Emit("CMPQ", _DX, jit.Ptr(_SI, 16)) // CMPQ DX, 16(SI)
|
|
self.Sjmp("JAE" , "_array_more") // JAE _array_more
|
|
|
|
/* add a slot for the new element */
|
|
self.Link("_array_append") // _array_append:
|
|
self.Emit("ADDQ", jit.Imm(1), jit.Ptr(_SI, 8)) // ADDQ $1, 8(SI)
|
|
self.Emit("MOVQ", jit.Ptr(_SI, 0), _SI) // MOVQ (SI), SI
|
|
self.Emit("ADDQ", jit.Imm(1), _CX) // ADDQ $1, CX
|
|
self.Emit("CMPQ", _CX, jit.Imm(types.MAX_RECURSE)) // CMPQ CX, ${types.MAX_RECURSE}
|
|
self.Sjmp("JAE" , "_stack_overflow")
|
|
self.Emit("SHLQ", jit.Imm(1), _DX) // SHLQ $1, DX
|
|
self.Emit("LEAQ", jit.Sib(_SI, _DX, 8, 0), _SI) // LEAQ (SI)(DX*8), SI
|
|
self.Emit("MOVQ", _CX, jit.Ptr(_ST, _ST_Sp)) // MOVQ CX, ST.Sp
|
|
self.WriteRecNotAX(7 , _SI, jit.Sib(_ST, _CX, 8, _ST_Vp), false) // MOVQ SI, ST.Vp[CX]
|
|
self.Emit("MOVQ", jit.Imm(_S_val), jit.Sib(_ST, _CX, 8, _ST_Vt)) // MOVQ _S_val, ST.Vt[CX}
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/** V_ARRAY_END **/
|
|
self.Link("_decode_V_ARRAY_END") // _decode_V_ARRAY_END:
|
|
self.Emit("XORL", _DX, _DX) // XORL DX, DX
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vt), _AX) // MOVQ ST.Vt[CX], AX
|
|
self.Emit("CMPQ", _AX, jit.Imm(_S_arr_0)) // CMPQ AX, _S_arr_0
|
|
self.Sjmp("JE" , "_first_item") // JE _first_item
|
|
self.Emit("CMPQ", _AX, jit.Imm(_S_arr)) // CMPQ AX, _S_arr
|
|
self.Sjmp("JNE" , "_invalid_char") // JNE _invalid_char
|
|
self.Emit("SUBQ", jit.Imm(1), jit.Ptr(_ST, _ST_Sp)) // SUBQ $1, ST.Sp
|
|
self.Emit("MOVQ", _DX, jit.Sib(_ST, _CX, 8, _ST_Vp)) // MOVQ DX, ST.Vp[CX]
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/* first element of an array */
|
|
self.Link("_first_item") // _first_item:
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("SUBQ", jit.Imm(2), jit.Ptr(_ST, _ST_Sp)) // SUBQ $2, ST.Sp
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vp - 8), _SI) // MOVQ ST.Vp[CX - 1], SI
|
|
self.Emit("MOVQ", jit.Ptr(_SI, 8), _SI) // MOVQ 8(SI), SI
|
|
self.Emit("MOVQ", _DX, jit.Sib(_ST, _CX, 8, _ST_Vp - 8)) // MOVQ DX, ST.Vp[CX - 1]
|
|
self.Emit("MOVQ", _DX, jit.Sib(_ST, _CX, 8, _ST_Vp)) // MOVQ DX, ST.Vp[CX]
|
|
self.Emit("MOVQ", _DX, jit.Ptr(_SI, 8)) // MOVQ DX, 8(SI)
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/** V_OBJECT_END **/
|
|
self.Link("_decode_V_OBJECT_END") // _decode_V_OBJECT_END:
|
|
self.Emit("MOVL", jit.Imm(_S_omask_end), _DX) // MOVL _S_omask, DI
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vt), _AX) // MOVQ ST.Vt[CX], AX
|
|
self.Emit("BTQ" , _AX, _DX)
|
|
self.Sjmp("JNC" , "_invalid_char") // JNE _invalid_char
|
|
self.Emit("XORL", _AX, _AX) // XORL AX, AX
|
|
self.Emit("SUBQ", jit.Imm(1), jit.Ptr(_ST, _ST_Sp)) // SUBQ $1, ST.Sp
|
|
self.Emit("MOVQ", _AX, jit.Sib(_ST, _CX, 8, _ST_Vp)) // MOVQ AX, ST.Vp[CX]
|
|
self.Sjmp("JMP" , "_next") // JMP _next
|
|
|
|
/* return from decoder */
|
|
self.Link("_return") // _return:
|
|
self.Emit("XORL", _EP, _EP) // XORL EP, EP
|
|
self.Emit("MOVQ", _EP, jit.Ptr(_ST, _ST_Vp)) // MOVQ EP, ST.Vp[0]
|
|
self.Link("_epilogue") // _epilogue:
|
|
self.Emit("SUBQ", jit.Imm(_FsmOffset), _ST) // SUBQ _FsmOffset, _ST
|
|
self.Emit("MOVQ", jit.Ptr(_SP, _VD_offs), _BP) // MOVQ _VD_offs(SP), BP
|
|
self.Emit("ADDQ", jit.Imm(_VD_size), _SP) // ADDQ $_VD_size, SP
|
|
self.Emit("RET") // RET
|
|
|
|
/* array expand */
|
|
self.Link("_array_more") // _array_more:
|
|
self.Emit("MOVQ" , _T_eface, _AX) // MOVQ _T_eface, AX
|
|
self.Emit("MOVOU", jit.Ptr(_SI, 0), _X0) // MOVOU (SI), X0
|
|
self.Emit("MOVQ" , jit.Ptr(_SI, 16), _DX) // MOVQ 16(SI), DX
|
|
self.Emit("MOVQ" , _AX, jit.Ptr(_SP, 0)) // MOVQ AX, (SP)
|
|
self.Emit("MOVOU", _X0, jit.Ptr(_SP, 8)) // MOVOU X0, 8(SP)
|
|
self.Emit("MOVQ" , _DX, jit.Ptr(_SP, 24)) // MOVQ DX, 24(SP)
|
|
self.Emit("SHLQ" , jit.Imm(1), _DX) // SHLQ $1, DX
|
|
self.Emit("MOVQ" , _DX, jit.Ptr(_SP, 32)) // MOVQ DX, 32(SP)
|
|
self.call_go(_F_growslice) // CALL_GO runtime.growslice
|
|
self.Emit("MOVQ" , jit.Ptr(_SP, 40), _DI) // MOVOU 40(SP), DI
|
|
self.Emit("MOVQ" , jit.Ptr(_SP, 48), _DX) // MOVOU 48(SP), DX
|
|
self.Emit("MOVQ" , jit.Ptr(_SP, 56), _AX) // MOVQ 56(SP), AX
|
|
|
|
/* update the slice */
|
|
self.Emit("MOVQ", jit.Ptr(_ST, _ST_Sp), _CX) // MOVQ ST.Sp, CX
|
|
self.Emit("MOVQ", jit.Sib(_ST, _CX, 8, _ST_Vp), _SI) // MOVQ ST.Vp[CX], SI
|
|
self.Emit("MOVQ", jit.Ptr(_SI, 8), _SI) // MOVQ 8(SI), SI
|
|
self.Emit("MOVQ", _DX, jit.Ptr(_SI, 8)) // MOVQ DX, 8(SI)
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SI, 16)) // MOVQ AX, 16(AX)
|
|
self.WriteRecNotAX(8 , _DI, jit.Ptr(_SI, 0), false) // MOVQ R10, (SI)
|
|
self.Sjmp("JMP" , "_array_append") // JMP _array_append
|
|
|
|
/* copy string */
|
|
self.Link("copy_string") // pointer: R8, length: AX, return addr: DI
|
|
// self.Byte(0xcc)
|
|
self.Emit("MOVQ", _R8, _VAR_cs_p)
|
|
self.Emit("MOVQ", _AX, _VAR_cs_n)
|
|
self.Emit("MOVQ", _DI, _VAR_cs_LR)
|
|
self.Emit("MOVQ", _T_byte, jit.Ptr(_SP, 0))
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SP, 8))
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SP, 16))
|
|
self.call_go(_F_makeslice)
|
|
self.Emit("MOVQ", jit.Ptr(_SP, 24), _R8)
|
|
self.Emit("MOVQ", _R8, _VAR_cs_d)
|
|
self.Emit("MOVQ", _R8, jit.Ptr(_SP, 0))
|
|
self.Emit("MOVQ", _VAR_cs_p, _R8)
|
|
self.Emit("MOVQ", _R8, jit.Ptr(_SP, 8))
|
|
self.Emit("MOVQ", _VAR_cs_n, _AX)
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SP, 16))
|
|
self.call_go(_F_memmove)
|
|
self.Emit("MOVQ", _VAR_cs_d, _R8)
|
|
self.Emit("MOVQ", _VAR_cs_n, _AX)
|
|
self.Emit("MOVQ", _VAR_cs_LR, _DI)
|
|
// self.Byte(0xcc)
|
|
self.Rjmp("JMP", _DI)
|
|
|
|
/* error handlers */
|
|
self.Link("_stack_overflow")
|
|
self.Emit("MOVL" , _E_recurse, _EP) // MOVQ _E_recurse, EP
|
|
self.Sjmp("JMP" , "_error") // JMP _error
|
|
self.Link("_vtype_error") // _vtype_error:
|
|
self.Emit("MOVQ" , _DI, _IC) // MOVQ DI, IC
|
|
self.Emit("MOVL" , _E_invalid, _EP) // MOVL _E_invalid, EP
|
|
self.Sjmp("JMP" , "_error") // JMP _error
|
|
self.Link("_invalid_char") // _invalid_char:
|
|
self.Emit("SUBQ" , jit.Imm(1), _IC) // SUBQ $1, IC
|
|
self.Emit("MOVL" , _E_invalid, _EP) // MOVL _E_invalid, EP
|
|
self.Sjmp("JMP" , "_error") // JMP _error
|
|
self.Link("_unquote_error") // _unquote_error:
|
|
self.Emit("MOVQ" , _VAR_ss_Iv, _IC) // MOVQ ss.Iv, IC
|
|
self.Emit("SUBQ" , jit.Imm(1), _IC) // SUBQ $1, IC
|
|
self.Link("_parsing_error") // _parsing_error:
|
|
self.Emit("NEGQ" , _AX) // NEGQ AX
|
|
self.Emit("MOVQ" , _AX, _EP) // MOVQ AX, EP
|
|
self.Link("_error") // _error:
|
|
self.Emit("PXOR" , _X0, _X0) // PXOR X0, X0
|
|
self.Emit("MOVOU", _X0, jit.Ptr(_VP, 0)) // MOVOU X0, (VP)
|
|
self.Sjmp("JMP" , "_epilogue") // JMP _epilogue
|
|
|
|
/* invalid value type, never returns */
|
|
self.Link("_invalid_vtype")
|
|
self.Emit("MOVQ", _AX, jit.Ptr(_SP, 0)) // MOVQ AX, (SP)
|
|
self.call(_F_invalid_vtype) // CALL invalid_type
|
|
self.Emit("UD2") // UD2
|
|
|
|
/* switch jump table */
|
|
self.Link("_switch_table") // _switch_table:
|
|
self.Sref("_decode_V_EOF", 0) // SREF &_decode_V_EOF, $0
|
|
self.Sref("_decode_V_NULL", -4) // SREF &_decode_V_NULL, $-4
|
|
self.Sref("_decode_V_TRUE", -8) // SREF &_decode_V_TRUE, $-8
|
|
self.Sref("_decode_V_FALSE", -12) // SREF &_decode_V_FALSE, $-12
|
|
self.Sref("_decode_V_ARRAY", -16) // SREF &_decode_V_ARRAY, $-16
|
|
self.Sref("_decode_V_OBJECT", -20) // SREF &_decode_V_OBJECT, $-20
|
|
self.Sref("_decode_V_STRING", -24) // SREF &_decode_V_STRING, $-24
|
|
self.Sref("_decode_V_DOUBLE", -28) // SREF &_decode_V_DOUBLE, $-28
|
|
self.Sref("_decode_V_INTEGER", -32) // SREF &_decode_V_INTEGER, $-32
|
|
self.Sref("_decode_V_KEY_SEP", -36) // SREF &_decode_V_KEY_SEP, $-36
|
|
self.Sref("_decode_V_ELEM_SEP", -40) // SREF &_decode_V_ELEM_SEP, $-40
|
|
self.Sref("_decode_V_ARRAY_END", -44) // SREF &_decode_V_ARRAY_END, $-44
|
|
self.Sref("_decode_V_OBJECT_END", -48) // SREF &_decode_V_OBJECT_END, $-48
|
|
|
|
/* fast character lookup table */
|
|
self.Link("_decode_tab") // _decode_tab:
|
|
self.Sref("_decode_V_EOF", 0) // SREF &_decode_V_EOF, $0
|
|
|
|
/* generate rest of the tabs */
|
|
for i := 1; i < 256; i++ {
|
|
if to, ok := _R_tab[i]; ok {
|
|
self.Sref(to, -int64(i) * 4)
|
|
} else {
|
|
self.Byte(0x00, 0x00, 0x00, 0x00)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (self *_ValueDecoder) WritePtrAX(i int, rec obj.Addr, saveDI bool) {
|
|
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}")
|
|
if saveDI {
|
|
self.save(_DI)
|
|
}
|
|
self.Emit("LEAQ", rec, _DI)
|
|
self.Emit("MOVQ", _F_gcWriteBarrierAX, _R10) // MOVQ ${fn}, AX
|
|
self.Rjmp("CALL", _R10)
|
|
if saveDI {
|
|
self.load(_DI)
|
|
}
|
|
self.Sjmp("JMP", "_end_writeBarrier" + strconv.Itoa(i) + "_{n}")
|
|
self.Link("_no_writeBarrier" + strconv.Itoa(i) + "_{n}")
|
|
self.Emit("MOVQ", _AX, rec)
|
|
self.Link("_end_writeBarrier" + strconv.Itoa(i) + "_{n}")
|
|
}
|
|
|
|
func (self *_ValueDecoder) WriteRecNotAX(i int, ptr obj.Addr, rec obj.Addr, saveDI bool) {
|
|
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)
|
|
if saveDI {
|
|
self.save(_DI)
|
|
}
|
|
self.Emit("LEAQ", rec, _DI)
|
|
self.Emit("MOVQ", _F_gcWriteBarrierAX, _R10) // MOVQ ${fn}, AX
|
|
self.Rjmp("CALL", _R10)
|
|
if saveDI {
|
|
self.load(_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}")
|
|
}
|
|
|
|
/** Generic Decoder **/
|
|
|
|
var (
|
|
_subr_decode_value = new(_ValueDecoder).build()
|
|
)
|
|
|
|
//go:nosplit
|
|
func invalid_vtype(vt types.ValueType) {
|
|
throw(fmt.Sprintf("invalid value type: %d", vt))
|
|
}
|