LLVM 19.0.0git
CSKYAsmParser.cpp
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1//===---- CSKYAsmParser.cpp - Parse CSKY assembly to MCInst instructions --===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
14#include "llvm/ADT/STLExtras.h"
15#include "llvm/ADT/Statistic.h"
20#include "llvm/MC/MCContext.h"
21#include "llvm/MC/MCExpr.h"
22#include "llvm/MC/MCInst.h"
23#include "llvm/MC/MCInstrInfo.h"
29#include "llvm/MC/MCStreamer.h"
35#include "llvm/Support/Debug.h"
37
38using namespace llvm;
39
40#define DEBUG_TYPE "csky-asm-parser"
41
42// Include the auto-generated portion of the compress emitter.
43#define GEN_COMPRESS_INSTR
44#include "CSKYGenCompressInstEmitter.inc"
45
46STATISTIC(CSKYNumInstrsCompressed,
47 "Number of C-SKY Compressed instructions emitted");
48
49static cl::opt<bool>
50 EnableCompressedInst("enable-csky-asm-compressed-inst", cl::Hidden,
51 cl::init(false),
52 cl::desc("Enable C-SKY asm compressed instruction"));
53
54namespace {
55struct CSKYOperand;
56
57class CSKYAsmParser : public MCTargetAsmParser {
58
59 const MCRegisterInfo *MRI;
60
62 unsigned Kind) override;
63
64 bool generateImmOutOfRangeError(OperandVector &Operands, uint64_t ErrorInfo,
65 int64_t Lower, int64_t Upper,
66 const Twine &Msg);
67
68 SMLoc getLoc() const { return getParser().getTok().getLoc(); }
69
70 bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
73 bool MatchingInlineAsm) override;
74
75 bool parseRegister(MCRegister &Reg, SMLoc &StartLoc, SMLoc &EndLoc) override;
76
78 SMLoc NameLoc, OperandVector &Operands) override;
79
80 ParseStatus parseDirective(AsmToken DirectiveID) override;
81
82 // Helper to actually emit an instruction to the MCStreamer. Also, when
83 // possible, compression of the instruction is performed.
84 void emitToStreamer(MCStreamer &S, const MCInst &Inst);
85
87 SMLoc &EndLoc) override;
88
89 bool processInstruction(MCInst &Inst, SMLoc IDLoc, OperandVector &Operands,
90 MCStreamer &Out);
91 bool processLRW(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out);
92 bool processJSRI(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out);
93 bool processJMPI(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out);
94
95 CSKYTargetStreamer &getTargetStreamer() {
96 assert(getParser().getStreamer().getTargetStreamer() &&
97 "do not have a target streamer");
99 return static_cast<CSKYTargetStreamer &>(TS);
100 }
101
102// Auto-generated instruction matching functions
103#define GET_ASSEMBLER_HEADER
104#include "CSKYGenAsmMatcher.inc"
105
108 ParseStatus parseBaseRegImm(OperandVector &Operands);
109 ParseStatus parseCSKYSymbol(OperandVector &Operands);
110 ParseStatus parseConstpoolSymbol(OperandVector &Operands);
111 ParseStatus parseDataSymbol(OperandVector &Operands);
112 ParseStatus parsePSRFlag(OperandVector &Operands);
113 ParseStatus parseRegSeq(OperandVector &Operands);
114 ParseStatus parseRegList(OperandVector &Operands);
115
116 bool parseOperand(OperandVector &Operands, StringRef Mnemonic);
117
118 bool parseDirectiveAttribute();
119
120public:
121 enum CSKYMatchResultTy {
122 Match_Dummy = FIRST_TARGET_MATCH_RESULT_TY,
123 Match_RequiresSameSrcAndDst,
124 Match_InvalidRegOutOfRange,
125#define GET_OPERAND_DIAGNOSTIC_TYPES
126#include "CSKYGenAsmMatcher.inc"
127#undef GET_OPERAND_DIAGNOSTIC_TYPES
128 };
129
130 CSKYAsmParser(const MCSubtargetInfo &STI, MCAsmParser &Parser,
131 const MCInstrInfo &MII, const MCTargetOptions &Options)
132 : MCTargetAsmParser(Options, STI, MII) {
133
135
136 // Cache the MCRegisterInfo.
138
139 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
140 getTargetStreamer().emitTargetAttributes(STI);
141 }
142};
143
144/// Instances of this class represent a parsed machine instruction.
145struct CSKYOperand : public MCParsedAsmOperand {
146
147 enum KindTy {
148 Token,
149 Register,
150 Immediate,
151 RegisterSeq,
152 CPOP,
153 RegisterList
154 } Kind;
155
156 struct RegOp {
157 unsigned RegNum;
158 };
159
160 struct ImmOp {
161 const MCExpr *Val;
162 };
163
164 struct ConstpoolOp {
165 const MCExpr *Val;
166 };
167
168 struct RegSeqOp {
169 unsigned RegNumFrom;
170 unsigned RegNumTo;
171 };
172
173 struct RegListOp {
174 unsigned List1From = 0;
175 unsigned List1To = 0;
176 unsigned List2From = 0;
177 unsigned List2To = 0;
178 unsigned List3From = 0;
179 unsigned List3To = 0;
180 unsigned List4From = 0;
181 unsigned List4To = 0;
182 };
183
184 SMLoc StartLoc, EndLoc;
185 union {
186 StringRef Tok;
187 RegOp Reg;
188 ImmOp Imm;
189 ConstpoolOp CPool;
190 RegSeqOp RegSeq;
191 RegListOp RegList;
192 };
193
194 CSKYOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
195
196public:
197 CSKYOperand(const CSKYOperand &o) : MCParsedAsmOperand() {
198 Kind = o.Kind;
199 StartLoc = o.StartLoc;
200 EndLoc = o.EndLoc;
201 switch (Kind) {
202 case Register:
203 Reg = o.Reg;
204 break;
205 case RegisterSeq:
206 RegSeq = o.RegSeq;
207 break;
208 case CPOP:
209 CPool = o.CPool;
210 break;
211 case Immediate:
212 Imm = o.Imm;
213 break;
214 case Token:
215 Tok = o.Tok;
216 break;
217 case RegisterList:
218 RegList = o.RegList;
219 break;
220 }
221 }
222
223 bool isToken() const override { return Kind == Token; }
224 bool isReg() const override { return Kind == Register; }
225 bool isImm() const override { return Kind == Immediate; }
226 bool isRegisterSeq() const { return Kind == RegisterSeq; }
227 bool isRegisterList() const { return Kind == RegisterList; }
228 bool isConstPoolOp() const { return Kind == CPOP; }
229
230 bool isMem() const override { return false; }
231
232 static bool evaluateConstantImm(const MCExpr *Expr, int64_t &Imm) {
233 if (auto CE = dyn_cast<MCConstantExpr>(Expr)) {
234 Imm = CE->getValue();
235 return true;
236 }
237
238 return false;
239 }
240
241 template <unsigned num, unsigned shift = 0> bool isUImm() const {
242 if (!isImm())
243 return false;
244
245 int64_t Imm;
246 bool IsConstantImm = evaluateConstantImm(getImm(), Imm);
247 return IsConstantImm && isShiftedUInt<num, shift>(Imm);
248 }
249
250 template <unsigned num> bool isOImm() const {
251 if (!isImm())
252 return false;
253
254 int64_t Imm;
255 bool IsConstantImm = evaluateConstantImm(getImm(), Imm);
256 return IsConstantImm && isUInt<num>(Imm - 1);
257 }
258
259 template <unsigned num, unsigned shift = 0> bool isSImm() const {
260 if (!isImm())
261 return false;
262
263 int64_t Imm;
264 bool IsConstantImm = evaluateConstantImm(getImm(), Imm);
265 return IsConstantImm && isShiftedInt<num, shift>(Imm);
266 }
267
268 bool isUImm1() const { return isUImm<1>(); }
269 bool isUImm2() const { return isUImm<2>(); }
270 bool isUImm3() const { return isUImm<3>(); }
271 bool isUImm4() const { return isUImm<4>(); }
272 bool isUImm5() const { return isUImm<5>(); }
273 bool isUImm6() const { return isUImm<6>(); }
274 bool isUImm7() const { return isUImm<7>(); }
275 bool isUImm8() const { return isUImm<8>(); }
276 bool isUImm12() const { return isUImm<12>(); }
277 bool isUImm16() const { return isUImm<16>(); }
278 bool isUImm20() const { return isUImm<20>(); }
279 bool isUImm24() const { return isUImm<24>(); }
280
281 bool isOImm3() const { return isOImm<3>(); }
282 bool isOImm4() const { return isOImm<4>(); }
283 bool isOImm5() const { return isOImm<5>(); }
284 bool isOImm6() const { return isOImm<6>(); }
285 bool isOImm8() const { return isOImm<8>(); }
286 bool isOImm12() const { return isOImm<12>(); }
287 bool isOImm16() const { return isOImm<16>(); }
288
289 bool isSImm8() const { return isSImm<8>(); }
290
291 bool isUImm5Shift1() { return isUImm<5, 1>(); }
292 bool isUImm5Shift2() { return isUImm<5, 2>(); }
293 bool isUImm7Shift1() { return isUImm<7, 1>(); }
294 bool isUImm7Shift2() { return isUImm<7, 2>(); }
295 bool isUImm7Shift3() { return isUImm<7, 3>(); }
296 bool isUImm8Shift2() { return isUImm<8, 2>(); }
297 bool isUImm8Shift3() { return isUImm<8, 3>(); }
298 bool isUImm8Shift8() { return isUImm<8, 8>(); }
299 bool isUImm8Shift16() { return isUImm<8, 16>(); }
300 bool isUImm8Shift24() { return isUImm<8, 24>(); }
301 bool isUImm12Shift1() { return isUImm<12, 1>(); }
302 bool isUImm12Shift2() { return isUImm<12, 2>(); }
303 bool isUImm16Shift8() { return isUImm<16, 8>(); }
304 bool isUImm16Shift16() { return isUImm<16, 16>(); }
305 bool isUImm24Shift8() { return isUImm<24, 8>(); }
306
307 bool isSImm16Shift1() { return isSImm<16, 1>(); }
308
309 bool isCSKYSymbol() const { return isImm(); }
310
311 bool isConstpool() const { return isConstPoolOp(); }
312 bool isDataSymbol() const { return isConstPoolOp(); }
313
314 bool isPSRFlag() const {
315 int64_t Imm;
316 // Must be of 'immediate' type and a constant.
317 if (!isImm() || !evaluateConstantImm(getImm(), Imm))
318 return false;
319
320 return isUInt<5>(Imm);
321 }
322
323 template <unsigned MIN, unsigned MAX> bool isRegSeqTemplate() const {
324 if (!isRegisterSeq())
325 return false;
326
327 std::pair<unsigned, unsigned> regSeq = getRegSeq();
328
329 return MIN <= regSeq.first && regSeq.first <= regSeq.second &&
330 regSeq.second <= MAX;
331 }
332
333 bool isRegSeq() const { return isRegSeqTemplate<CSKY::R0, CSKY::R31>(); }
334
335 bool isRegSeqV1() const {
336 return isRegSeqTemplate<CSKY::F0_32, CSKY::F15_32>();
337 }
338
339 bool isRegSeqV2() const {
340 return isRegSeqTemplate<CSKY::F0_32, CSKY::F31_32>();
341 }
342
343 static bool isLegalRegList(unsigned from, unsigned to) {
344 if (from == 0 && to == 0)
345 return true;
346
347 if (from == to) {
348 if (from != CSKY::R4 && from != CSKY::R15 && from != CSKY::R16 &&
349 from != CSKY::R28)
350 return false;
351
352 return true;
353 } else {
354 if (from != CSKY::R4 && from != CSKY::R16)
355 return false;
356
357 if (from == CSKY::R4 && to > CSKY::R4 && to < CSKY::R12)
358 return true;
359 else if (from == CSKY::R16 && to > CSKY::R16 && to < CSKY::R18)
360 return true;
361 else
362 return false;
363 }
364 }
365
366 bool isRegList() const {
367 if (!isRegisterList())
368 return false;
369
370 auto regList = getRegList();
371
372 if (!isLegalRegList(regList.List1From, regList.List1To))
373 return false;
374 if (!isLegalRegList(regList.List2From, regList.List2To))
375 return false;
376 if (!isLegalRegList(regList.List3From, regList.List3To))
377 return false;
378 if (!isLegalRegList(regList.List4From, regList.List4To))
379 return false;
380
381 return true;
382 }
383
384 bool isExtImm6() {
385 if (!isImm())
386 return false;
387
388 int64_t Imm;
389 bool IsConstantImm = evaluateConstantImm(getImm(), Imm);
390 if (!IsConstantImm)
391 return false;
392
393 int uimm4 = Imm & 0xf;
394
395 return isShiftedUInt<6, 0>(Imm) && uimm4 >= 0 && uimm4 <= 14;
396 }
397
398 /// Gets location of the first token of this operand.
399 SMLoc getStartLoc() const override { return StartLoc; }
400 /// Gets location of the last token of this operand.
401 SMLoc getEndLoc() const override { return EndLoc; }
402
403 MCRegister getReg() const override {
404 assert(Kind == Register && "Invalid type access!");
405 return Reg.RegNum;
406 }
407
408 std::pair<unsigned, unsigned> getRegSeq() const {
409 assert(Kind == RegisterSeq && "Invalid type access!");
410 return std::pair<unsigned, unsigned>(RegSeq.RegNumFrom, RegSeq.RegNumTo);
411 }
412
413 RegListOp getRegList() const {
414 assert(Kind == RegisterList && "Invalid type access!");
415 return RegList;
416 }
417
418 const MCExpr *getImm() const {
419 assert(Kind == Immediate && "Invalid type access!");
420 return Imm.Val;
421 }
422
423 const MCExpr *getConstpoolOp() const {
424 assert(Kind == CPOP && "Invalid type access!");
425 return CPool.Val;
426 }
427
428 StringRef getToken() const {
429 assert(Kind == Token && "Invalid type access!");
430 return Tok;
431 }
432
433 void print(raw_ostream &OS) const override {
434 auto RegName = [](MCRegister Reg) {
435 if (Reg)
437 else
438 return "noreg";
439 };
440
441 switch (Kind) {
442 case CPOP:
443 OS << *getConstpoolOp();
444 break;
445 case Immediate:
446 OS << *getImm();
447 break;
448 case KindTy::Register:
449 OS << "<register " << RegName(getReg()) << ">";
450 break;
451 case RegisterSeq:
452 OS << "<register-seq ";
453 OS << RegName(getRegSeq().first) << "-" << RegName(getRegSeq().second)
454 << ">";
455 break;
456 case RegisterList:
457 OS << "<register-list ";
458 OS << RegName(getRegList().List1From) << "-"
459 << RegName(getRegList().List1To) << ",";
460 OS << RegName(getRegList().List2From) << "-"
461 << RegName(getRegList().List2To) << ",";
462 OS << RegName(getRegList().List3From) << "-"
463 << RegName(getRegList().List3To) << ",";
464 OS << RegName(getRegList().List4From) << "-"
465 << RegName(getRegList().List4To);
466 break;
467 case Token:
468 OS << "'" << getToken() << "'";
469 break;
470 }
471 }
472
473 static std::unique_ptr<CSKYOperand> createToken(StringRef Str, SMLoc S) {
474 auto Op = std::make_unique<CSKYOperand>(Token);
475 Op->Tok = Str;
476 Op->StartLoc = S;
477 Op->EndLoc = S;
478 return Op;
479 }
480
481 static std::unique_ptr<CSKYOperand> createReg(unsigned RegNo, SMLoc S,
482 SMLoc E) {
483 auto Op = std::make_unique<CSKYOperand>(Register);
484 Op->Reg.RegNum = RegNo;
485 Op->StartLoc = S;
486 Op->EndLoc = E;
487 return Op;
488 }
489
490 static std::unique_ptr<CSKYOperand> createRegSeq(unsigned RegNoFrom,
491 unsigned RegNoTo, SMLoc S) {
492 auto Op = std::make_unique<CSKYOperand>(RegisterSeq);
493 Op->RegSeq.RegNumFrom = RegNoFrom;
494 Op->RegSeq.RegNumTo = RegNoTo;
495 Op->StartLoc = S;
496 Op->EndLoc = S;
497 return Op;
498 }
499
500 static std::unique_ptr<CSKYOperand>
501 createRegList(SmallVector<unsigned, 4> reglist, SMLoc S) {
502 auto Op = std::make_unique<CSKYOperand>(RegisterList);
503 Op->RegList.List1From = 0;
504 Op->RegList.List1To = 0;
505 Op->RegList.List2From = 0;
506 Op->RegList.List2To = 0;
507 Op->RegList.List3From = 0;
508 Op->RegList.List3To = 0;
509 Op->RegList.List4From = 0;
510 Op->RegList.List4To = 0;
511
512 for (unsigned i = 0; i < reglist.size(); i += 2) {
513 if (Op->RegList.List1From == 0) {
514 Op->RegList.List1From = reglist[i];
515 Op->RegList.List1To = reglist[i + 1];
516 } else if (Op->RegList.List2From == 0) {
517 Op->RegList.List2From = reglist[i];
518 Op->RegList.List2To = reglist[i + 1];
519 } else if (Op->RegList.List3From == 0) {
520 Op->RegList.List3From = reglist[i];
521 Op->RegList.List3To = reglist[i + 1];
522 } else if (Op->RegList.List4From == 0) {
523 Op->RegList.List4From = reglist[i];
524 Op->RegList.List4To = reglist[i + 1];
525 } else {
526 assert(0);
527 }
528 }
529
530 Op->StartLoc = S;
531 Op->EndLoc = S;
532 return Op;
533 }
534
535 static std::unique_ptr<CSKYOperand> createImm(const MCExpr *Val, SMLoc S,
536 SMLoc E) {
537 auto Op = std::make_unique<CSKYOperand>(Immediate);
538 Op->Imm.Val = Val;
539 Op->StartLoc = S;
540 Op->EndLoc = E;
541 return Op;
542 }
543
544 static std::unique_ptr<CSKYOperand> createConstpoolOp(const MCExpr *Val,
545 SMLoc S, SMLoc E) {
546 auto Op = std::make_unique<CSKYOperand>(CPOP);
547 Op->CPool.Val = Val;
548 Op->StartLoc = S;
549 Op->EndLoc = E;
550 return Op;
551 }
552
553 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
554 assert(Expr && "Expr shouldn't be null!");
555 if (auto *CE = dyn_cast<MCConstantExpr>(Expr))
556 Inst.addOperand(MCOperand::createImm(CE->getValue()));
557 else
559 }
560
561 // Used by the TableGen Code.
562 void addRegOperands(MCInst &Inst, unsigned N) const {
563 assert(N == 1 && "Invalid number of operands!");
565 }
566
567 void addImmOperands(MCInst &Inst, unsigned N) const {
568 assert(N == 1 && "Invalid number of operands!");
569 addExpr(Inst, getImm());
570 }
571
572 void addConstpoolOperands(MCInst &Inst, unsigned N) const {
573 assert(N == 1 && "Invalid number of operands!");
574 Inst.addOperand(MCOperand::createExpr(getConstpoolOp()));
575 }
576
577 void addRegSeqOperands(MCInst &Inst, unsigned N) const {
578 assert(N == 2 && "Invalid number of operands!");
579 auto regSeq = getRegSeq();
580
581 Inst.addOperand(MCOperand::createReg(regSeq.first));
582 Inst.addOperand(MCOperand::createReg(regSeq.second));
583 }
584
585 static unsigned getListValue(unsigned ListFrom, unsigned ListTo) {
586 if (ListFrom == ListTo && ListFrom == CSKY::R15)
587 return (1 << 4);
588 else if (ListFrom == ListTo && ListFrom == CSKY::R28)
589 return (1 << 8);
590 else if (ListFrom == CSKY::R4)
591 return ListTo - ListFrom + 1;
592 else if (ListFrom == CSKY::R16)
593 return ((ListTo - ListFrom + 1) << 5);
594 else
595 return 0;
596 }
597
598 void addRegListOperands(MCInst &Inst, unsigned N) const {
599 assert(N == 1 && "Invalid number of operands!");
600 auto regList = getRegList();
601
602 unsigned V = 0;
603
604 unsigned T = getListValue(regList.List1From, regList.List1To);
605 if (T != 0)
606 V = V | T;
607
608 T = getListValue(regList.List2From, regList.List2To);
609 if (T != 0)
610 V = V | T;
611
612 T = getListValue(regList.List3From, regList.List3To);
613 if (T != 0)
614 V = V | T;
615
616 T = getListValue(regList.List4From, regList.List4To);
617 if (T != 0)
618 V = V | T;
619
621 }
622
623 bool isValidForTie(const CSKYOperand &Other) const {
624 if (Kind != Other.Kind)
625 return false;
626
627 switch (Kind) {
628 default:
629 llvm_unreachable("Unexpected kind");
630 return false;
631 case Register:
632 return Reg.RegNum == Other.Reg.RegNum;
633 }
634 }
635};
636} // end anonymous namespace.
637
638#define GET_REGISTER_MATCHER
639#define GET_SUBTARGET_FEATURE_NAME
640#define GET_MATCHER_IMPLEMENTATION
641#define GET_MNEMONIC_SPELL_CHECKER
642#include "CSKYGenAsmMatcher.inc"
643
645 assert(Reg >= CSKY::F0_32 && Reg <= CSKY::F31_32 && "Invalid register");
646 return Reg - CSKY::F0_32 + CSKY::F0_64;
647}
648
649static std::string CSKYMnemonicSpellCheck(StringRef S, const FeatureBitset &FBS,
650 unsigned VariantID = 0);
651
652bool CSKYAsmParser::generateImmOutOfRangeError(
654 const Twine &Msg = "immediate must be an integer in the range") {
655 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
656 return Error(ErrorLoc, Msg + " [" + Twine(Lower) + ", " + Twine(Upper) + "]");
657}
658
659bool CSKYAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
661 MCStreamer &Out,
663 bool MatchingInlineAsm) {
664 MCInst Inst;
665 FeatureBitset MissingFeatures;
666
667 auto Result = MatchInstructionImpl(Operands, Inst, ErrorInfo, MissingFeatures,
668 MatchingInlineAsm);
669 switch (Result) {
670 default:
671 break;
672 case Match_Success:
673 return processInstruction(Inst, IDLoc, Operands, Out);
674 case Match_MissingFeature: {
675 assert(MissingFeatures.any() && "Unknown missing features!");
676 ListSeparator LS;
677 std::string Msg = "instruction requires the following: ";
678 for (unsigned i = 0, e = MissingFeatures.size(); i != e; ++i) {
679 if (MissingFeatures[i]) {
680 Msg += LS;
681 Msg += getSubtargetFeatureName(i);
682 }
683 }
684 return Error(IDLoc, Msg);
685 }
686 case Match_MnemonicFail: {
687 FeatureBitset FBS = ComputeAvailableFeatures(getSTI().getFeatureBits());
688 std::string Suggestion =
689 CSKYMnemonicSpellCheck(((CSKYOperand &)*Operands[0]).getToken(), FBS);
690 return Error(IDLoc, "unrecognized instruction mnemonic" + Suggestion);
691 }
692 case Match_InvalidTiedOperand:
693 case Match_InvalidOperand: {
694 SMLoc ErrorLoc = IDLoc;
695 if (ErrorInfo != ~0U) {
696 if (ErrorInfo >= Operands.size())
697 return Error(ErrorLoc, "too few operands for instruction");
698
699 ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
700 if (ErrorLoc == SMLoc())
701 ErrorLoc = IDLoc;
702 }
703 return Error(ErrorLoc, "invalid operand for instruction");
704 }
705 }
706
707 // Handle the case when the error message is of specific type
708 // other than the generic Match_InvalidOperand, and the
709 // corresponding operand is missing.
710 if (Result > FIRST_TARGET_MATCH_RESULT_TY) {
711 SMLoc ErrorLoc = IDLoc;
712 if (ErrorInfo != ~0U && ErrorInfo >= Operands.size())
713 return Error(ErrorLoc, "too few operands for instruction");
714 }
715
716 switch (Result) {
717 default:
718 break;
719 case Match_InvalidSImm8:
720 return generateImmOutOfRangeError(Operands, ErrorInfo, -(1 << 7),
721 (1 << 7) - 1);
722 case Match_InvalidOImm3:
723 return generateImmOutOfRangeError(Operands, ErrorInfo, 1, (1 << 3));
724 case Match_InvalidOImm4:
725 return generateImmOutOfRangeError(Operands, ErrorInfo, 1, (1 << 4));
726 case Match_InvalidOImm5:
727 return generateImmOutOfRangeError(Operands, ErrorInfo, 1, (1 << 5));
728 case Match_InvalidOImm6:
729 return generateImmOutOfRangeError(Operands, ErrorInfo, 1, (1 << 6));
730 case Match_InvalidOImm8:
731 return generateImmOutOfRangeError(Operands, ErrorInfo, 1, (1 << 8));
732 case Match_InvalidOImm12:
733 return generateImmOutOfRangeError(Operands, ErrorInfo, 1, (1 << 12));
734 case Match_InvalidOImm16:
735 return generateImmOutOfRangeError(Operands, ErrorInfo, 1, (1 << 16));
736 case Match_InvalidUImm1:
737 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 1) - 1);
738 case Match_InvalidUImm2:
739 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 2) - 1);
740 case Match_InvalidUImm3:
741 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 3) - 1);
742 case Match_InvalidUImm4:
743 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 4) - 1);
744 case Match_InvalidUImm5:
745 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 5) - 1);
746 case Match_InvalidUImm6:
747 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 6) - 1);
748 case Match_InvalidUImm7:
749 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 7) - 1);
750 case Match_InvalidUImm8:
751 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 8) - 1);
752 case Match_InvalidUImm12:
753 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 12) - 1);
754 case Match_InvalidUImm16:
755 return generateImmOutOfRangeError(Operands, ErrorInfo, 0, (1 << 16) - 1);
756 case Match_InvalidUImm5Shift1:
757 return generateImmOutOfRangeError(
758 Operands, ErrorInfo, 0, (1 << 5) - 2,
759 "immediate must be a multiple of 2 bytes in the range");
760 case Match_InvalidUImm12Shift1:
761 return generateImmOutOfRangeError(
762 Operands, ErrorInfo, 0, (1 << 12) - 2,
763 "immediate must be a multiple of 2 bytes in the range");
764 case Match_InvalidUImm5Shift2:
765 return generateImmOutOfRangeError(
766 Operands, ErrorInfo, 0, (1 << 5) - 4,
767 "immediate must be a multiple of 4 bytes in the range");
768 case Match_InvalidUImm7Shift1:
769 return generateImmOutOfRangeError(
770 Operands, ErrorInfo, 0, (1 << 7) - 2,
771 "immediate must be a multiple of 2 bytes in the range");
772 case Match_InvalidUImm7Shift2:
773 return generateImmOutOfRangeError(
774 Operands, ErrorInfo, 0, (1 << 7) - 4,
775 "immediate must be a multiple of 4 bytes in the range");
776 case Match_InvalidUImm8Shift2:
777 return generateImmOutOfRangeError(
778 Operands, ErrorInfo, 0, (1 << 8) - 4,
779 "immediate must be a multiple of 4 bytes in the range");
780 case Match_InvalidUImm8Shift3:
781 return generateImmOutOfRangeError(
782 Operands, ErrorInfo, 0, (1 << 8) - 8,
783 "immediate must be a multiple of 8 bytes in the range");
784 case Match_InvalidUImm8Shift8:
785 return generateImmOutOfRangeError(
786 Operands, ErrorInfo, 0, (1 << 8) - 256,
787 "immediate must be a multiple of 256 bytes in the range");
788 case Match_InvalidUImm12Shift2:
789 return generateImmOutOfRangeError(
790 Operands, ErrorInfo, 0, (1 << 12) - 4,
791 "immediate must be a multiple of 4 bytes in the range");
792 case Match_InvalidCSKYSymbol: {
793 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
794 return Error(ErrorLoc, "operand must be a symbol name");
795 }
796 case Match_InvalidConstpool: {
797 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
798 return Error(ErrorLoc, "operand must be a constpool symbol name");
799 }
800 case Match_InvalidPSRFlag: {
801 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
802 return Error(ErrorLoc, "psrset operand is not valid");
803 }
804 case Match_InvalidRegSeq: {
805 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
806 return Error(ErrorLoc, "Register sequence is not valid");
807 }
808 case Match_InvalidRegOutOfRange: {
809 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
810 return Error(ErrorLoc, "register is out of range");
811 }
812 case Match_RequiresSameSrcAndDst: {
813 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
814 return Error(ErrorLoc, "src and dst operand must be same");
815 }
816 case Match_InvalidRegList: {
817 SMLoc ErrorLoc = ((CSKYOperand &)*Operands[ErrorInfo]).getStartLoc();
818 return Error(ErrorLoc, "invalid register list");
819 }
820 }
821 LLVM_DEBUG(dbgs() << "Result = " << Result);
822 llvm_unreachable("Unknown match type detected!");
823}
824
825bool CSKYAsmParser::processLRW(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out) {
826 Inst.setLoc(IDLoc);
827
828 unsigned Opcode;
830 if (Inst.getOpcode() == CSKY::PseudoLRW16)
831 Opcode = CSKY::LRW16;
832 else
833 Opcode = CSKY::LRW32;
834
835 if (Inst.getOperand(1).isImm()) {
836 if (isUInt<8>(Inst.getOperand(1).getImm()) &&
837 Inst.getOperand(0).getReg() <= CSKY::R7) {
838 Opcode = CSKY::MOVI16;
839 } else if (getSTI().hasFeature(CSKY::HasE2) &&
840 isUInt<16>(Inst.getOperand(1).getImm())) {
841 Opcode = CSKY::MOVI32;
842 } else {
843 auto *Expr = getTargetStreamer().addConstantPoolEntry(
844 MCConstantExpr::create(Inst.getOperand(1).getImm(), getContext()),
845 Inst.getLoc());
846 Inst.erase(std::prev(Inst.end()));
848 }
849 } else {
850 const MCExpr *AdjustExpr = nullptr;
851 if (const CSKYMCExpr *CSKYExpr =
852 dyn_cast<CSKYMCExpr>(Inst.getOperand(1).getExpr())) {
853 if (CSKYExpr->getKind() == CSKYMCExpr::VK_CSKY_TLSGD ||
854 CSKYExpr->getKind() == CSKYMCExpr::VK_CSKY_TLSIE ||
855 CSKYExpr->getKind() == CSKYMCExpr::VK_CSKY_TLSLDM) {
856 MCSymbol *Dot = getContext().createNamedTempSymbol();
857 Out.emitLabel(Dot);
858 AdjustExpr = MCSymbolRefExpr::create(Dot, getContext());
859 }
860 }
861 auto *Expr = getTargetStreamer().addConstantPoolEntry(
862 Inst.getOperand(1).getExpr(), Inst.getLoc(), AdjustExpr);
863 Inst.erase(std::prev(Inst.end()));
865 }
866
867 Inst.setOpcode(Opcode);
868
869 Out.emitInstruction(Inst, getSTI());
870 return false;
871}
872
873bool CSKYAsmParser::processJSRI(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out) {
874 Inst.setLoc(IDLoc);
875
876 if (Inst.getOperand(0).isImm()) {
877 const MCExpr *Expr = getTargetStreamer().addConstantPoolEntry(
878 MCConstantExpr::create(Inst.getOperand(0).getImm(), getContext()),
879 Inst.getLoc());
880 Inst.setOpcode(CSKY::JSRI32);
881 Inst.erase(std::prev(Inst.end()));
883 } else {
884 const MCExpr *Expr = getTargetStreamer().addConstantPoolEntry(
885 Inst.getOperand(0).getExpr(), Inst.getLoc());
886 Inst.setOpcode(CSKY::JBSR32);
888 }
889
890 Out.emitInstruction(Inst, getSTI());
891 return false;
892}
893
894bool CSKYAsmParser::processJMPI(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out) {
895 Inst.setLoc(IDLoc);
896
897 if (Inst.getOperand(0).isImm()) {
898 const MCExpr *Expr = getTargetStreamer().addConstantPoolEntry(
899 MCConstantExpr::create(Inst.getOperand(0).getImm(), getContext()),
900 Inst.getLoc());
901 Inst.setOpcode(CSKY::JMPI32);
902 Inst.erase(std::prev(Inst.end()));
904 } else {
905 const MCExpr *Expr = getTargetStreamer().addConstantPoolEntry(
906 Inst.getOperand(0).getExpr(), Inst.getLoc());
907 Inst.setOpcode(CSKY::JBR32);
909 }
910
911 Out.emitInstruction(Inst, getSTI());
912 return false;
913}
914
915bool CSKYAsmParser::processInstruction(MCInst &Inst, SMLoc IDLoc,
917 MCStreamer &Out) {
918
919 switch (Inst.getOpcode()) {
920 default:
921 break;
922 case CSKY::LDQ32:
923 case CSKY::STQ32:
924 if (Inst.getOperand(1).getReg() != CSKY::R4 ||
925 Inst.getOperand(2).getReg() != CSKY::R7) {
926 return Error(IDLoc, "Register sequence is not valid. 'r4-r7' expected");
927 }
928 Inst.setOpcode(Inst.getOpcode() == CSKY::LDQ32 ? CSKY::LDM32 : CSKY::STM32);
929 break;
930 case CSKY::SEXT32:
931 case CSKY::ZEXT32:
932 if (Inst.getOperand(2).getImm() < Inst.getOperand(3).getImm())
933 return Error(IDLoc, "msb must be greater or equal to lsb");
934 break;
935 case CSKY::INS32:
936 if (Inst.getOperand(3).getImm() < Inst.getOperand(4).getImm())
937 return Error(IDLoc, "msb must be greater or equal to lsb");
938 break;
939 case CSKY::IDLY32:
940 if (Inst.getOperand(0).getImm() > 32 || Inst.getOperand(0).getImm() < 0)
941 return Error(IDLoc, "n must be in range [0,32]");
942 break;
943 case CSKY::ADDC32:
944 case CSKY::SUBC32:
945 case CSKY::ADDC16:
946 case CSKY::SUBC16:
947 Inst.erase(std::next(Inst.begin()));
948 Inst.erase(std::prev(Inst.end()));
949 Inst.insert(std::next(Inst.begin()), MCOperand::createReg(CSKY::C));
950 Inst.insert(Inst.end(), MCOperand::createReg(CSKY::C));
951 break;
952 case CSKY::CMPNEI32:
953 case CSKY::CMPNEI16:
954 case CSKY::CMPNE32:
955 case CSKY::CMPNE16:
956 case CSKY::CMPHSI32:
957 case CSKY::CMPHSI16:
958 case CSKY::CMPHS32:
959 case CSKY::CMPHS16:
960 case CSKY::CMPLTI32:
961 case CSKY::CMPLTI16:
962 case CSKY::CMPLT32:
963 case CSKY::CMPLT16:
964 case CSKY::BTSTI32:
965 Inst.erase(Inst.begin());
966 Inst.insert(Inst.begin(), MCOperand::createReg(CSKY::C));
967 break;
968 case CSKY::MVCV32:
969 Inst.erase(std::next(Inst.begin()));
970 Inst.insert(Inst.end(), MCOperand::createReg(CSKY::C));
971 break;
972 case CSKY::PseudoLRW16:
973 case CSKY::PseudoLRW32:
974 return processLRW(Inst, IDLoc, Out);
975 case CSKY::PseudoJSRI32:
976 return processJSRI(Inst, IDLoc, Out);
977 case CSKY::PseudoJMPI32:
978 return processJMPI(Inst, IDLoc, Out);
979 case CSKY::JBSR32:
980 case CSKY::JBR16:
981 case CSKY::JBT16:
982 case CSKY::JBF16:
983 case CSKY::JBR32:
984 case CSKY::JBT32:
985 case CSKY::JBF32:
986 unsigned Num = Inst.getNumOperands() - 1;
987 assert(Inst.getOperand(Num).isExpr());
988
989 const MCExpr *Expr = getTargetStreamer().addConstantPoolEntry(
990 Inst.getOperand(Num).getExpr(), Inst.getLoc());
991
993 break;
994 }
995
996 emitToStreamer(Out, Inst);
997 return false;
998}
999
1000// Attempts to match Name as a register (either using the default name or
1001// alternative ABI names), setting RegNo to the matching register. Upon
1002// failure, returns true and sets RegNo to 0.
1004 StringRef Name) {
1005 Reg = MatchRegisterName(Name);
1006
1007 if (Reg == CSKY::NoRegister)
1009
1010 return Reg == CSKY::NoRegister;
1011}
1012
1013bool CSKYAsmParser::parseRegister(MCRegister &Reg, SMLoc &StartLoc,
1014 SMLoc &EndLoc) {
1015 const AsmToken &Tok = getParser().getTok();
1016 StartLoc = Tok.getLoc();
1017 EndLoc = Tok.getEndLoc();
1018 StringRef Name = getLexer().getTok().getIdentifier();
1019
1020 if (!matchRegisterNameHelper(getSTI(), Reg, Name)) {
1021 getParser().Lex(); // Eat identifier token.
1022 return false;
1023 }
1024
1025 return true;
1026}
1027
1028ParseStatus CSKYAsmParser::parseRegister(OperandVector &Operands) {
1029 SMLoc S = getLoc();
1031
1032 switch (getLexer().getKind()) {
1033 default:
1034 return ParseStatus::NoMatch;
1035 case AsmToken::Identifier: {
1036 StringRef Name = getLexer().getTok().getIdentifier();
1038
1039 if (matchRegisterNameHelper(getSTI(), Reg, Name))
1040 return ParseStatus::NoMatch;
1041
1042 getLexer().Lex();
1043 Operands.push_back(CSKYOperand::createReg(Reg, S, E));
1044
1045 return ParseStatus::Success;
1046 }
1047 }
1048}
1049
1050ParseStatus CSKYAsmParser::parseBaseRegImm(OperandVector &Operands) {
1051 assert(getLexer().is(AsmToken::LParen));
1052
1053 Operands.push_back(CSKYOperand::createToken("(", getLoc()));
1054
1055 auto Tok = getParser().Lex(); // Eat '('
1056
1057 if (!parseRegister(Operands).isSuccess()) {
1058 getLexer().UnLex(Tok);
1059 Operands.pop_back();
1060 return ParseStatus::NoMatch;
1061 }
1062
1063 if (getLexer().is(AsmToken::RParen)) {
1064 Operands.push_back(CSKYOperand::createToken(")", getLoc()));
1065 getParser().Lex(); // Eat ')'
1066 return ParseStatus::Success;
1067 }
1068
1069 if (getLexer().isNot(AsmToken::Comma))
1070 return Error(getLoc(), "expected ','");
1071
1072 getParser().Lex(); // Eat ','
1073
1074 if (parseRegister(Operands).isSuccess()) {
1075 if (getLexer().isNot(AsmToken::LessLess))
1076 return Error(getLoc(), "expected '<<'");
1077
1078 Operands.push_back(CSKYOperand::createToken("<<", getLoc()));
1079
1080 getParser().Lex(); // Eat '<<'
1081
1082 if (!parseImmediate(Operands).isSuccess())
1083 return Error(getLoc(), "expected imm");
1084
1085 } else if (!parseImmediate(Operands).isSuccess()) {
1086 return Error(getLoc(), "expected imm");
1087 }
1088
1089 if (getLexer().isNot(AsmToken::RParen))
1090 return Error(getLoc(), "expected ')'");
1091
1092 Operands.push_back(CSKYOperand::createToken(")", getLoc()));
1093
1094 getParser().Lex(); // Eat ')'
1095
1096 return ParseStatus::Success;
1097}
1098
1099ParseStatus CSKYAsmParser::parseImmediate(OperandVector &Operands) {
1100 switch (getLexer().getKind()) {
1101 default:
1102 return ParseStatus::NoMatch;
1103 case AsmToken::LParen:
1104 case AsmToken::Minus:
1105 case AsmToken::Plus:
1106 case AsmToken::Integer:
1107 case AsmToken::String:
1108 break;
1109 }
1110
1111 const MCExpr *IdVal;
1112 SMLoc S = getLoc();
1113 if (getParser().parseExpression(IdVal))
1114 return Error(getLoc(), "unknown expression");
1115
1117 Operands.push_back(CSKYOperand::createImm(IdVal, S, E));
1118 return ParseStatus::Success;
1119}
1120
1121/// Looks at a token type and creates the relevant operand from this
1122/// information, adding to Operands. If operand was parsed, returns false, else
1123/// true.
1124bool CSKYAsmParser::parseOperand(OperandVector &Operands, StringRef Mnemonic) {
1125 // Check if the current operand has a custom associated parser, if so, try to
1126 // custom parse the operand, or fallback to the general approach.
1128 MatchOperandParserImpl(Operands, Mnemonic, /*ParseForAllFeatures=*/true);
1129 if (Result.isSuccess())
1130 return false;
1131 if (Result.isFailure())
1132 return true;
1133
1134 // Attempt to parse token as register
1135 auto Res = parseRegister(Operands);
1136 if (Res.isSuccess())
1137 return false;
1138 if (Res.isFailure())
1139 return true;
1140
1141 // Attempt to parse token as (register, imm)
1142 if (getLexer().is(AsmToken::LParen)) {
1143 Res = parseBaseRegImm(Operands);
1144 if (Res.isSuccess())
1145 return false;
1146 if (Res.isFailure())
1147 return true;
1148 }
1149
1150 Res = parseImmediate(Operands);
1151 if (Res.isSuccess())
1152 return false;
1153 if (Res.isFailure())
1154 return true;
1155
1156 // Finally we have exhausted all options and must declare defeat.
1157 Error(getLoc(), "unknown operand");
1158 return true;
1159}
1160
1161ParseStatus CSKYAsmParser::parseCSKYSymbol(OperandVector &Operands) {
1162 SMLoc S = getLoc();
1164 const MCExpr *Res;
1165
1166 if (getLexer().getKind() != AsmToken::Identifier)
1167 return ParseStatus::NoMatch;
1168
1170 AsmToken Tok = getLexer().getTok();
1171
1172 if (getParser().parseIdentifier(Identifier))
1173 return Error(getLoc(), "unknown identifier");
1174
1176 if (Identifier.consume_back("@GOT"))
1178 else if (Identifier.consume_back("@GOTOFF"))
1180 else if (Identifier.consume_back("@PLT"))
1182 else if (Identifier.consume_back("@GOTPC"))
1184 else if (Identifier.consume_back("@TLSGD32"))
1186 else if (Identifier.consume_back("@GOTTPOFF"))
1188 else if (Identifier.consume_back("@TPOFF"))
1190 else if (Identifier.consume_back("@TLSLDM32"))
1192 else if (Identifier.consume_back("@TLSLDO32"))
1194
1195 MCSymbol *Sym = getContext().getInlineAsmLabel(Identifier);
1196
1197 if (!Sym)
1198 Sym = getContext().getOrCreateSymbol(Identifier);
1199
1200 if (Sym->isVariable()) {
1201 const MCExpr *V = Sym->getVariableValue(/*SetUsed=*/false);
1202 if (!isa<MCSymbolRefExpr>(V)) {
1203 getLexer().UnLex(Tok); // Put back if it's not a bare symbol.
1204 return Error(getLoc(), "unknown symbol");
1205 }
1206 Res = V;
1207 } else
1209
1210 MCBinaryExpr::Opcode Opcode;
1211 switch (getLexer().getKind()) {
1212 default:
1213 if (Kind != CSKYMCExpr::VK_CSKY_None)
1214 Res = CSKYMCExpr::create(Res, Kind, getContext());
1215
1216 Operands.push_back(CSKYOperand::createImm(Res, S, E));
1217 return ParseStatus::Success;
1218 case AsmToken::Plus:
1219 Opcode = MCBinaryExpr::Add;
1220 break;
1221 case AsmToken::Minus:
1222 Opcode = MCBinaryExpr::Sub;
1223 break;
1224 }
1225
1226 getLexer().Lex(); // eat + or -
1227
1228 const MCExpr *Expr;
1229 if (getParser().parseExpression(Expr))
1230 return Error(getLoc(), "unknown expression");
1231 Res = MCBinaryExpr::create(Opcode, Res, Expr, getContext());
1232 Operands.push_back(CSKYOperand::createImm(Res, S, E));
1233 return ParseStatus::Success;
1234}
1235
1236ParseStatus CSKYAsmParser::parseDataSymbol(OperandVector &Operands) {
1237 SMLoc S = getLoc();
1239 const MCExpr *Res;
1240
1241 if (!parseOptionalToken(AsmToken::LBrac))
1242 return ParseStatus::NoMatch;
1243 if (getLexer().getKind() != AsmToken::Identifier) {
1244 const MCExpr *Expr;
1245 if (getParser().parseExpression(Expr))
1246 return Error(getLoc(), "unknown expression");
1247
1248 if (parseToken(AsmToken::RBrac, "expected ']'"))
1249 return ParseStatus::Failure;
1250
1251 Operands.push_back(CSKYOperand::createConstpoolOp(Expr, S, E));
1252 return ParseStatus::Success;
1253 }
1254
1255 AsmToken Tok = getLexer().getTok();
1257
1258 if (getParser().parseIdentifier(Identifier))
1259 return Error(getLoc(), "unknown identifier " + Identifier);
1260
1262 if (Identifier.consume_back("@GOT"))
1264 else if (Identifier.consume_back("@PLT"))
1266
1267 MCSymbol *Sym = getContext().getInlineAsmLabel(Identifier);
1268
1269 if (!Sym)
1270 Sym = getContext().getOrCreateSymbol(Identifier);
1271
1272 if (Sym->isVariable()) {
1273 const MCExpr *V = Sym->getVariableValue(/*SetUsed=*/false);
1274 if (!isa<MCSymbolRefExpr>(V)) {
1275 getLexer().UnLex(Tok); // Put back if it's not a bare symbol.
1276 return Error(getLoc(), "unknown symbol");
1277 }
1278 Res = V;
1279 } else {
1281 }
1282
1283 MCBinaryExpr::Opcode Opcode;
1284 switch (getLexer().getKind()) {
1285 default:
1286 return Error(getLoc(), "unknown symbol");
1287 case AsmToken::RBrac:
1288
1289 getLexer().Lex(); // Eat ']'.
1290
1291 if (Kind != CSKYMCExpr::VK_CSKY_None)
1292 Res = CSKYMCExpr::create(Res, Kind, getContext());
1293
1294 Operands.push_back(CSKYOperand::createConstpoolOp(Res, S, E));
1295 return ParseStatus::Success;
1296 case AsmToken::Plus:
1297 Opcode = MCBinaryExpr::Add;
1298 break;
1299 case AsmToken::Minus:
1300 Opcode = MCBinaryExpr::Sub;
1301 break;
1302 }
1303
1304 getLexer().Lex(); // eat + or -
1305
1306 const MCExpr *Expr;
1307 if (getParser().parseExpression(Expr))
1308 return Error(getLoc(), "unknown expression");
1309 if (parseToken(AsmToken::RBrac, "expected ']'"))
1310 return ParseStatus::Failure;
1311
1312 Res = MCBinaryExpr::create(Opcode, Res, Expr, getContext());
1313 Operands.push_back(CSKYOperand::createConstpoolOp(Res, S, E));
1314 return ParseStatus::Success;
1315}
1316
1317ParseStatus CSKYAsmParser::parseConstpoolSymbol(OperandVector &Operands) {
1318 SMLoc S = getLoc();
1320 const MCExpr *Res;
1321
1322 if (!parseOptionalToken(AsmToken::LBrac))
1323 return ParseStatus::NoMatch;
1324
1325 if (getLexer().getKind() != AsmToken::Identifier) {
1326 const MCExpr *Expr;
1327 if (getParser().parseExpression(Expr))
1328 return Error(getLoc(), "unknown expression");
1329 if (parseToken(AsmToken::RBrac))
1330 return ParseStatus::Failure;
1331
1332 Operands.push_back(CSKYOperand::createConstpoolOp(Expr, S, E));
1333 return ParseStatus::Success;
1334 }
1335
1336 AsmToken Tok = getLexer().getTok();
1338
1339 if (getParser().parseIdentifier(Identifier))
1340 return Error(getLoc(), "unknown identifier");
1341
1342 MCSymbol *Sym = getContext().getInlineAsmLabel(Identifier);
1343
1344 if (!Sym)
1345 Sym = getContext().getOrCreateSymbol(Identifier);
1346
1347 if (Sym->isVariable()) {
1348 const MCExpr *V = Sym->getVariableValue(/*SetUsed=*/false);
1349 if (!isa<MCSymbolRefExpr>(V)) {
1350 getLexer().UnLex(Tok); // Put back if it's not a bare symbol.
1351 return Error(getLoc(), "unknown symbol");
1352 }
1353 Res = V;
1354 } else {
1356 }
1357
1358 MCBinaryExpr::Opcode Opcode;
1359 switch (getLexer().getKind()) {
1360 default:
1361 return Error(getLoc(), "unknown symbol");
1362 case AsmToken::RBrac:
1363
1364 getLexer().Lex(); // Eat ']'.
1365
1366 Operands.push_back(CSKYOperand::createConstpoolOp(Res, S, E));
1367 return ParseStatus::Success;
1368 case AsmToken::Plus:
1369 Opcode = MCBinaryExpr::Add;
1370 break;
1371 case AsmToken::Minus:
1372 Opcode = MCBinaryExpr::Sub;
1373 break;
1374 }
1375
1376 getLexer().Lex(); // eat + or -
1377
1378 const MCExpr *Expr;
1379 if (getParser().parseExpression(Expr))
1380 return Error(getLoc(), "unknown expression");
1381 if (parseToken(AsmToken::RBrac, "expected ']'"))
1382 return ParseStatus::Failure;
1383
1384 Res = MCBinaryExpr::create(Opcode, Res, Expr, getContext());
1385 Operands.push_back(CSKYOperand::createConstpoolOp(Res, S, E));
1386 return ParseStatus::Success;
1387}
1388
1389ParseStatus CSKYAsmParser::parsePSRFlag(OperandVector &Operands) {
1390 SMLoc S = getLoc();
1392
1393 unsigned Flag = 0;
1394
1395 while (getLexer().isNot(AsmToken::EndOfStatement)) {
1397 if (getParser().parseIdentifier(Identifier))
1398 return Error(getLoc(), "unknown identifier " + Identifier);
1399
1400 if (Identifier == "sie")
1401 Flag = (1 << 4) | Flag;
1402 else if (Identifier == "ee")
1403 Flag = (1 << 3) | Flag;
1404 else if (Identifier == "ie")
1405 Flag = (1 << 2) | Flag;
1406 else if (Identifier == "fe")
1407 Flag = (1 << 1) | Flag;
1408 else if (Identifier == "af")
1409 Flag = (1 << 0) | Flag;
1410 else
1411 return Error(getLoc(), "expected " + Identifier);
1412
1413 if (getLexer().is(AsmToken::EndOfStatement))
1414 break;
1415
1416 if (parseToken(AsmToken::Comma, "expected ','"))
1417 return ParseStatus::Failure;
1418 }
1419
1420 Operands.push_back(
1421 CSKYOperand::createImm(MCConstantExpr::create(Flag, getContext()), S, E));
1422 return ParseStatus::Success;
1423}
1424
1425ParseStatus CSKYAsmParser::parseRegSeq(OperandVector &Operands) {
1426 SMLoc S = getLoc();
1427
1428 if (!parseRegister(Operands).isSuccess())
1429 return ParseStatus::NoMatch;
1430
1431 auto Ry = Operands.back()->getReg();
1432 Operands.pop_back();
1433
1434 if (parseToken(AsmToken::Minus, "expected '-'"))
1435 return ParseStatus::Failure;
1436 if (!parseRegister(Operands).isSuccess())
1437 return Error(getLoc(), "invalid register");
1438
1439 auto Rz = Operands.back()->getReg();
1440 Operands.pop_back();
1441
1442 Operands.push_back(CSKYOperand::createRegSeq(Ry, Rz, S));
1443 return ParseStatus::Success;
1444}
1445
1446ParseStatus CSKYAsmParser::parseRegList(OperandVector &Operands) {
1447 SMLoc S = getLoc();
1448
1450
1451 while (true) {
1452
1453 if (!parseRegister(Operands).isSuccess())
1454 return Error(getLoc(), "invalid register");
1455
1456 auto Ry = Operands.back()->getReg();
1457 Operands.pop_back();
1458
1459 if (parseOptionalToken(AsmToken::Minus)) {
1460 if (!parseRegister(Operands).isSuccess())
1461 return Error(getLoc(), "invalid register");
1462
1463 auto Rz = Operands.back()->getReg();
1464 Operands.pop_back();
1465
1466 reglist.push_back(Ry);
1467 reglist.push_back(Rz);
1468
1469 if (getLexer().is(AsmToken::EndOfStatement))
1470 break;
1471 (void)parseOptionalToken(AsmToken::Comma);
1472 } else if (parseOptionalToken(AsmToken::Comma)) {
1473 reglist.push_back(Ry);
1474 reglist.push_back(Ry);
1475 } else if (getLexer().is(AsmToken::EndOfStatement)) {
1476 reglist.push_back(Ry);
1477 reglist.push_back(Ry);
1478 break;
1479 } else {
1480 return Error(getLoc(), "invalid register list");
1481 }
1482 }
1483
1484 Operands.push_back(CSKYOperand::createRegList(reglist, S));
1485 return ParseStatus::Success;
1486}
1487
1488bool CSKYAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
1489 SMLoc NameLoc, OperandVector &Operands) {
1490 // First operand is token for instruction.
1491 Operands.push_back(CSKYOperand::createToken(Name, NameLoc));
1492
1493 // If there are no more operands, then finish.
1494 if (getLexer().is(AsmToken::EndOfStatement))
1495 return false;
1496
1497 // Parse first operand.
1498 if (parseOperand(Operands, Name))
1499 return true;
1500
1501 // Parse until end of statement, consuming commas between operands.
1502 while (parseOptionalToken(AsmToken::Comma))
1503 if (parseOperand(Operands, Name))
1504 return true;
1505
1506 if (getLexer().isNot(AsmToken::EndOfStatement)) {
1507 SMLoc Loc = getLexer().getLoc();
1508 getParser().eatToEndOfStatement();
1509 return Error(Loc, "unexpected token");
1510 }
1511
1512 getParser().Lex(); // Consume the EndOfStatement.
1513 return false;
1514}
1515
1516ParseStatus CSKYAsmParser::tryParseRegister(MCRegister &Reg, SMLoc &StartLoc,
1517 SMLoc &EndLoc) {
1518 const AsmToken &Tok = getParser().getTok();
1519 StartLoc = Tok.getLoc();
1520 EndLoc = Tok.getEndLoc();
1521
1522 StringRef Name = getLexer().getTok().getIdentifier();
1523
1524 if (matchRegisterNameHelper(getSTI(), Reg, Name))
1525 return ParseStatus::NoMatch;
1526
1527 getParser().Lex(); // Eat identifier token.
1528 return ParseStatus::Success;
1529}
1530
1531ParseStatus CSKYAsmParser::parseDirective(AsmToken DirectiveID) {
1532 StringRef IDVal = DirectiveID.getString();
1533
1534 if (IDVal == ".csky_attribute")
1535 return parseDirectiveAttribute();
1536
1537 return ParseStatus::NoMatch;
1538}
1539
1540/// parseDirectiveAttribute
1541/// ::= .attribute expression ',' ( expression | "string" )
1542bool CSKYAsmParser::parseDirectiveAttribute() {
1543 MCAsmParser &Parser = getParser();
1544 int64_t Tag;
1545 SMLoc TagLoc;
1546 TagLoc = Parser.getTok().getLoc();
1547 if (Parser.getTok().is(AsmToken::Identifier)) {
1548 StringRef Name = Parser.getTok().getIdentifier();
1549 std::optional<unsigned> Ret =
1551 if (!Ret)
1552 return Error(TagLoc, "attribute name not recognised: " + Name);
1553 Tag = *Ret;
1554 Parser.Lex();
1555 } else {
1556 const MCExpr *AttrExpr;
1557
1558 TagLoc = Parser.getTok().getLoc();
1559 if (Parser.parseExpression(AttrExpr))
1560 return true;
1561
1562 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(AttrExpr);
1563 if (!CE)
1564 return Error(TagLoc, "expected numeric constant");
1565
1566 Tag = CE->getValue();
1567 }
1568
1569 if (Parser.parseComma())
1570 return true;
1571
1572 StringRef StringValue;
1573 int64_t IntegerValue = 0;
1574 bool IsIntegerValue = ((Tag != CSKYAttrs::CSKY_ARCH_NAME) &&
1577
1578 SMLoc ValueExprLoc = Parser.getTok().getLoc();
1579 if (IsIntegerValue) {
1580 const MCExpr *ValueExpr;
1581 if (Parser.parseExpression(ValueExpr))
1582 return true;
1583
1584 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ValueExpr);
1585 if (!CE)
1586 return Error(ValueExprLoc, "expected numeric constant");
1587 IntegerValue = CE->getValue();
1588 } else {
1589 if (Parser.getTok().isNot(AsmToken::String))
1590 return Error(Parser.getTok().getLoc(), "expected string constant");
1591
1592 StringValue = Parser.getTok().getStringContents();
1593 Parser.Lex();
1594 }
1595
1596 if (Parser.parseEOL())
1597 return true;
1598
1599 if (IsIntegerValue)
1600 getTargetStreamer().emitAttribute(Tag, IntegerValue);
1602 getTargetStreamer().emitTextAttribute(Tag, StringValue);
1603 else {
1605 ? CSKY::parseArch(StringValue)
1606 : CSKY::parseCPUArch(StringValue);
1607 if (ID == CSKY::ArchKind::INVALID)
1608 return Error(ValueExprLoc, (Tag == CSKYAttrs::CSKY_ARCH_NAME)
1609 ? "unknown arch name"
1610 : "unknown cpu name");
1611
1612 getTargetStreamer().emitTextAttribute(Tag, StringValue);
1613 }
1614
1615 return false;
1616}
1617
1618unsigned CSKYAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp,
1619 unsigned Kind) {
1620 CSKYOperand &Op = static_cast<CSKYOperand &>(AsmOp);
1621
1622 if (!Op.isReg())
1623 return Match_InvalidOperand;
1624
1625 MCRegister Reg = Op.getReg();
1626
1627 if (CSKYMCRegisterClasses[CSKY::FPR32RegClassID].contains(Reg)) {
1628 // As the parser couldn't differentiate an FPR64 from an FPR32, coerce the
1629 // register from FPR32 to FPR64 if necessary.
1630 if (Kind == MCK_FPR64 || Kind == MCK_sFPR64) {
1631 Op.Reg.RegNum = convertFPR32ToFPR64(Reg);
1632 if (Kind == MCK_sFPR64 &&
1633 (Op.Reg.RegNum < CSKY::F0_64 || Op.Reg.RegNum > CSKY::F15_64))
1634 return Match_InvalidRegOutOfRange;
1635 if (Kind == MCK_FPR64 &&
1636 (Op.Reg.RegNum < CSKY::F0_64 || Op.Reg.RegNum > CSKY::F31_64))
1637 return Match_InvalidRegOutOfRange;
1638 return Match_Success;
1639 }
1640 }
1641
1642 if (CSKYMCRegisterClasses[CSKY::GPRRegClassID].contains(Reg)) {
1643 if (Kind == MCK_GPRPair) {
1644 Op.Reg.RegNum = MRI->getEncodingValue(Reg) + CSKY::R0_R1;
1645 return Match_Success;
1646 }
1647 }
1648
1649 return Match_InvalidOperand;
1650}
1651
1652void CSKYAsmParser::emitToStreamer(MCStreamer &S, const MCInst &Inst) {
1653 MCInst CInst;
1654 bool Res = false;
1656 Res = compressInst(CInst, Inst, getSTI());
1657 if (Res)
1658 ++CSKYNumInstrsCompressed;
1659 S.emitInstruction((Res ? CInst : Inst), getSTI());
1660}
1661
1664}
unsigned const MachineRegisterInfo * MRI
static MCRegister MatchRegisterName(StringRef Name)
static const char * getSubtargetFeatureName(uint64_t Val)
static bool isNot(const MachineRegisterInfo &MRI, const MachineInstr &MI)
static MCRegister MatchRegisterAltName(StringRef Name)
Maps from the set of all alternative registernames to a register number.
static void print(raw_ostream &Out, object::Archive::Kind Kind, T Val)
static bool matchRegisterNameHelper(const MCSubtargetInfo &STI, MCRegister &Reg, StringRef Name)
LLVM_EXTERNAL_VISIBILITY void LLVMInitializeCSKYAsmParser()
static MCRegister convertFPR32ToFPR64(MCRegister Reg)
static std::string CSKYMnemonicSpellCheck(StringRef S, const FeatureBitset &FBS, unsigned VariantID=0)
static cl::opt< bool > EnableCompressedInst("enable-csky-asm-compressed-inst", cl::Hidden, cl::init(false), cl::desc("Enable C-SKY asm compressed instruction"))
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:135
#define LLVM_DEBUG(X)
Definition: Debug.h:101
std::string Name
std::optional< std::vector< StOtherPiece > > Other
Definition: ELFYAML.cpp:1291
Symbol * Sym
Definition: ELF_riscv.cpp:479
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang", "erlang-compatible garbage collector")
#define RegName(no)
static LVOptions Options
Definition: LVOptions.cpp:25
mir Rename Register Operands
static unsigned getReg(const MCDisassembler *D, unsigned RC, unsigned RegNo)
static bool isReg(const MCInst &MI, unsigned OpNo)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
static bool isImm(const MachineOperand &MO, MachineRegisterInfo *MRI)
This file contains some templates that are useful if you are working with the STL at all.
raw_pwrite_stream & OS
This file defines the 'Statistic' class, which is designed to be an easy way to expose various metric...
#define STATISTIC(VARNAME, DESC)
Definition: Statistic.h:167
This file contains some functions that are useful when dealing with strings.
This file implements the StringSwitch template, which mimics a switch() statement whose cases are str...
static bool contains(SmallPtrSetImpl< ConstantExpr * > &Cache, ConstantExpr *Expr, Constant *C)
Definition: Value.cpp:469
bool parseImmediate(MCInst &MI, uint64_t &Size, ArrayRef< uint8_t > Bytes)
Target independent representation for an assembler token.
Definition: MCAsmMacro.h:21
SMLoc getLoc() const
Definition: MCAsmLexer.cpp:26
bool isNot(TokenKind K) const
Definition: MCAsmMacro.h:83
StringRef getString() const
Get the string for the current token, this includes all characters (for example, the quotes on string...
Definition: MCAsmMacro.h:110
StringRef getStringContents() const
Get the contents of a string token (without quotes).
Definition: MCAsmMacro.h:90
bool is(TokenKind K) const
Definition: MCAsmMacro.h:82
SMLoc getEndLoc() const
Definition: MCAsmLexer.cpp:30
StringRef getIdentifier() const
Get the identifier string for the current token, which should be an identifier or a string.
Definition: MCAsmMacro.h:99
static const char * getRegisterName(MCRegister Reg)
static const CSKYMCExpr * create(const MCExpr *Expr, VariantKind Kind, MCContext &Ctx)
Definition: CSKYMCExpr.cpp:22
This class represents an Operation in the Expression.
Base class for user error types.
Definition: Error.h:352
Lightweight error class with error context and mandatory checking.
Definition: Error.h:160
Container class for subtarget features.
constexpr size_t size() const
virtual void Initialize(MCAsmParser &Parser)
Initialize the extension for parsing using the given Parser.
Generic assembler parser interface, for use by target specific assembly parsers.
Definition: MCAsmParser.h:123
virtual MCStreamer & getStreamer()=0
Return the output streamer for the assembler.
virtual bool parseExpression(const MCExpr *&Res, SMLoc &EndLoc)=0
Parse an arbitrary expression.
const AsmToken & getTok() const
Get the current AsmToken from the stream.
Definition: MCAsmParser.cpp:40
virtual const AsmToken & Lex()=0
Get the next AsmToken in the stream, possibly handling file inclusion first.
static const MCBinaryExpr * create(Opcode Op, const MCExpr *LHS, const MCExpr *RHS, MCContext &Ctx, SMLoc Loc=SMLoc())
Definition: MCExpr.cpp:183
@ Sub
Subtraction.
Definition: MCExpr.h:517
@ Add
Addition.
Definition: MCExpr.h:495
static const MCConstantExpr * create(int64_t Value, MCContext &Ctx, bool PrintInHex=false, unsigned SizeInBytes=0)
Definition: MCExpr.cpp:194
const MCRegisterInfo * getRegisterInfo() const
Definition: MCContext.h:439
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:184
void erase(iterator I)
Definition: MCInst.h:216
unsigned getNumOperands() const
Definition: MCInst.h:208
SMLoc getLoc() const
Definition: MCInst.h:204
void setLoc(SMLoc loc)
Definition: MCInst.h:203
unsigned getOpcode() const
Definition: MCInst.h:198
iterator insert(iterator I, const MCOperand &Op)
Definition: MCInst.h:224
void addOperand(const MCOperand Op)
Definition: MCInst.h:210
iterator begin()
Definition: MCInst.h:219
iterator end()
Definition: MCInst.h:221
void setOpcode(unsigned Op)
Definition: MCInst.h:197
const MCOperand & getOperand(unsigned i) const
Definition: MCInst.h:206
Interface to description of machine instruction set.
Definition: MCInstrInfo.h:26
Instances of this class represent operands of the MCInst class.
Definition: MCInst.h:36
static MCOperand createReg(unsigned Reg)
Definition: MCInst.h:134
static MCOperand createExpr(const MCExpr *Val)
Definition: MCInst.h:162
int64_t getImm() const
Definition: MCInst.h:80
static MCOperand createImm(int64_t Val)
Definition: MCInst.h:141
bool isImm() const
Definition: MCInst.h:62
unsigned getReg() const
Returns the register number.
Definition: MCInst.h:69
const MCExpr * getExpr() const
Definition: MCInst.h:114
bool isExpr() const
Definition: MCInst.h:65
MCParsedAsmOperand - This abstract class represents a source-level assembly instruction operand.
MCRegisterInfo base class - We assume that the target defines a static array of MCRegisterDesc object...
Wrapper class representing physical registers. Should be passed by value.
Definition: MCRegister.h:33
Streaming machine code generation interface.
Definition: MCStreamer.h:212
virtual void emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI)
Emit the given Instruction into the current section.
virtual void emitLabel(MCSymbol *Symbol, SMLoc Loc=SMLoc())
Emit a label for Symbol into the current section.
Definition: MCStreamer.cpp:424
MCTargetStreamer * getTargetStreamer()
Definition: MCStreamer.h:306
Generic base class for all target subtargets.
const FeatureBitset & getFeatureBits() const
static const MCSymbolRefExpr * create(const MCSymbol *Symbol, MCContext &Ctx)
Definition: MCExpr.h:397
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:40
MCTargetAsmParser - Generic interface to target specific assembly parsers.
virtual ParseStatus parseDirective(AsmToken DirectiveID)
Parses a target-specific assembler directive.
virtual bool parseRegister(MCRegister &Reg, SMLoc &StartLoc, SMLoc &EndLoc)=0
virtual ParseStatus tryParseRegister(MCRegister &Reg, SMLoc &StartLoc, SMLoc &EndLoc)=0
tryParseRegister - parse one register if possible
void setAvailableFeatures(const FeatureBitset &Value)
virtual unsigned validateTargetOperandClass(MCParsedAsmOperand &Op, unsigned Kind)
Allow a target to add special case operand matching for things that tblgen doesn't/can't handle effec...
virtual bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name, SMLoc NameLoc, OperandVector &Operands)=0
ParseInstruction - Parse one assembly instruction.
virtual bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode, OperandVector &Operands, MCStreamer &Out, uint64_t &ErrorInfo, bool MatchingInlineAsm)=0
MatchAndEmitInstruction - Recognize a series of operands of a parsed instruction as an actual MCInst ...
Target specific streamer interface.
Definition: MCStreamer.h:93
Ternary parse status returned by various parse* methods.
static constexpr StatusTy Failure
static constexpr StatusTy Success
static constexpr StatusTy NoMatch
Wrapper class representing virtual and physical registers.
Definition: Register.h:19
Represents a location in source code.
Definition: SMLoc.h:23
static SMLoc getFromPointer(const char *Ptr)
Definition: SMLoc.h:36
constexpr const char * getPointer() const
Definition: SMLoc.h:34
size_t size() const
Definition: SmallVector.h:91
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: SmallVector.h:586
void push_back(const T &Elt)
Definition: SmallVector.h:426
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1209
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:81
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
const TagNameMap & getCSKYAttributeTags()
ArchKind parseCPUArch(StringRef CPU)
ArchKind parseArch(StringRef Arch)
std::optional< unsigned > attrTypeFromString(StringRef tag, TagNameMap tagNameMap)
Flag
These should be considered private to the implementation of the MCInstrDesc class.
Definition: MCInstrDesc.h:148
@ CE
Windows NT (Windows on ARM)
Reg
All possible values of the reg field in the ModR/M byte.
initializer< Ty > init(const Ty &Val)
Definition: CommandLine.h:450
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
static bool isMem(const MachineInstr &MI, unsigned Op)
Definition: X86InstrInfo.h:161
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:163
Target & getTheCSKYTarget()
DWARFExpression::Operation Op
#define N
RegisterMCAsmParser - Helper template for registering a target specific assembly parser,...