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1//go:build go1.17 && !go1.222// +build go1.17,!go1.223/*5* Copyright 2021 ByteDance Inc.6*7* Licensed under the Apache License, Version 2.0 (the "License");8* you may not use this file except in compliance with the License.9* You may obtain a copy of the License at10*11* http://www.apache.org/licenses/LICENSE-2.012*13* Unless required by applicable law or agreed to in writing, software14* distributed under the License is distributed on an "AS IS" BASIS,15* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.16* See the License for the specific language governing permissions and17* limitations under the License.18*/19)37/** Register Allocations39*40* State Registers:41*42* %rbx : stack base43* %rdi : result pointer44* %rsi : result length45* %rdx : result capacity46* %r12 : sp->p47* %r13 : sp->q48* %r14 : sp->x49* %r15 : sp->f50*51* Error Registers:52*53* %r10 : error type register54* %r11 : error pointer register55*/56/** Function Prototype & Stack Map58*59* func (buf *[]byte, p unsafe.Pointer, sb *_Stack, fv uint64) (err error)60*61* buf : (FP)62* p : 8(FP)63* sb : 16(FP)64* fv : 24(FP)65* err.vt : 32(FP)66* err.vp : 40(FP)67*/68_S_init72)73)80)88)93)103)108)116)129)134)141)147)154)161)166)172)181p _Program185x int186name string187}188}192/** Assembler Interface **/194}198}204}211/** Assembler Stages **/213}266}274}282}290}305}323/** Assembler Inline Functions **/325}335}345}353}362}391}395}399}417}423/** State Stack Helpers **/425)430}442}455/** Buffer Helpers **/457}462}467}472// get *buf at AX474func (self *_Assembler) prep_buffer_AX() {475self.Emit("MOVQ", _ARG_rb, _AX) // MOVQ rb<>+0(FP), AX476self.Emit("MOVQ", _RL, jit.Ptr(_AX, 8)) // MOVQ RL, 8(AX)477}478}485// get *buf at AX487func (self *_Assembler) load_buffer_AX() {488self.Emit("MOVQ", _ARG_rb, _AX) // MOVQ rb<>+0(FP), AX489self.Emit("MOVQ", jit.Ptr(_AX, 0), _RP) // MOVQ (AX), RP490self.Emit("MOVQ", jit.Ptr(_AX, 8), _RL) // MOVQ 8(AX), RL491self.Emit("MOVQ", jit.Ptr(_AX, 16), _RC) // MOVQ 16(AX), RC492}493/** Function Interface Helpers **/495}500}504}510}517}523}529}535}544}570}589/** Builtin: _more_space **/591)596// AX must saving n598func (self *_Assembler) more_space() {599self.Link(_LB_more_space)600self.Emit("MOVQ", _RP, _BX) // MOVQ DI, BX601self.Emit("MOVQ", _RL, _CX) // MOVQ SI, CX602self.Emit("MOVQ", _RC, _DI) // MOVQ DX, DI603self.Emit("MOVQ", _AX, _SI) // MOVQ AX, SI604self.Emit("MOVQ", _T_byte, _AX) // MOVQ $_T_byte, AX605self.call_more_space(_F_growslice) // CALL $pc606self.Emit("MOVQ", _AX, _RP) // MOVQ AX, DI607self.Emit("MOVQ", _BX, _RL) // MOVQ BX, SI608self.Emit("MOVQ", _CX, _RC) // MOVQ CX, DX609self.save_buffer() // SAVE {buf}610self.Rjmp("JMP" , _LR) // JMP LR611}612/** Builtin Errors **/614)620}627}635}642/** String Encoding Routine **/644)649}655* because the parameter registers collide with RP / RL / RC */683self.Emit("MOVQ", _RC, _CX) // MOVQ RC, CX684self.Emit("SUBQ", _RL, _CX) // SUBQ RL, CX685self.Emit("MOVQ", _CX, _VAR_dn) // MOVQ CX, dn686self.Emit("LEAQ", jit.Sib(_RP, _RL, 1, 0), _DX) // LEAQ (RP)(RL), DX687self.Emit("LEAQ", _VAR_dn, _CX) // LEAQ dn, CX688self.Emit("MOVQ", _VAR_sp, _AX) // MOVQ sp, AX689self.Emit("MOVQ", jit.Ptr(_SP_p, 0), _DI) // MOVQ (SP.p), DI690self.Emit("MOVQ", jit.Ptr(_SP_p, 8), _SI) // MOVQ 8(SP.p), SI691self.Emit("ADDQ", _AX, _DI) // ADDQ AX, DI692self.Emit("SUBQ", _AX, _SI) // SUBQ AX, SI693}739/** OpCode Assembler Functions **/741)746)754)760)766)772)776}782}788}800}812}827}831}835}839}843}847}851}855}859}872}886}890}918}922}951}963}976}982}987}991}996}1003}1007}1011}1016}1041}1046}1051}1056}1061}1066}1071}1079}1083}1095}1101}1107}1115}1121}1127}1136}1140}1148}1152}1160}1164}1169}1176