LLVM  9.0.0svn
PPCAsmParser.cpp
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1 //===-- PPCAsmParser.cpp - Parse PowerPC asm 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 
9 #include "MCTargetDesc/PPCMCExpr.h"
10 #include "MCTargetDesc/PPCMCTargetDesc.h"
11 #include "PPCTargetStreamer.h"
12 #include "llvm/ADT/STLExtras.h"
13 #include "llvm/ADT/StringSwitch.h"
14 #include "llvm/ADT/Twine.h"
15 #include "llvm/MC/MCContext.h"
16 #include "llvm/MC/MCExpr.h"
17 #include "llvm/MC/MCInst.h"
18 #include "llvm/MC/MCInstrInfo.h"
19 #include "llvm/MC/MCParser/MCAsmLexer.h"
20 #include "llvm/MC/MCParser/MCAsmParser.h"
21 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
22 #include "llvm/MC/MCParser/MCTargetAsmParser.h"
23 #include "llvm/MC/MCStreamer.h"
24 #include "llvm/MC/MCSubtargetInfo.h"
25 #include "llvm/MC/MCSymbolELF.h"
26 #include "llvm/Support/SourceMgr.h"
27 #include "llvm/Support/TargetRegistry.h"
28 #include "llvm/Support/raw_ostream.h"
29 
30 using namespace llvm;
31 
32 DEFINE_PPC_REGCLASSES;
33 
34 // Evaluate an expression containing condition register
35 // or condition register field symbols. Returns positive
36 // value on success, or -1 on error.
37 static int64_t
38 EvaluateCRExpr(const MCExpr *E) {
39  switch (E->getKind()) {
40  case MCExpr::Target:
41  return -1;
42 
43  case MCExpr::Constant: {
44  int64_t Res = cast<MCConstantExpr>(E)->getValue();
45  return Res < 0 ? -1 : Res;
46  }
47 
48  case MCExpr::SymbolRef: {
49  const MCSymbolRefExpr *SRE = cast<MCSymbolRefExpr>(E);
50  StringRef Name = SRE->getSymbol().getName();
51 
52  if (Name == "lt") return 0;
53  if (Name == "gt") return 1;
54  if (Name == "eq") return 2;
55  if (Name == "so") return 3;
56  if (Name == "un") return 3;
57 
58  if (Name == "cr0") return 0;
59  if (Name == "cr1") return 1;
60  if (Name == "cr2") return 2;
61  if (Name == "cr3") return 3;
62  if (Name == "cr4") return 4;
63  if (Name == "cr5") return 5;
64  if (Name == "cr6") return 6;
65  if (Name == "cr7") return 7;
66 
67  return -1;
68  }
69 
70  case MCExpr::Unary:
71  return -1;
72 
73  case MCExpr::Binary: {
74  const MCBinaryExpr *BE = cast<MCBinaryExpr>(E);
75  int64_t LHSVal = EvaluateCRExpr(BE->getLHS());
76  int64_t RHSVal = EvaluateCRExpr(BE->getRHS());
77  int64_t Res;
78 
79  if (LHSVal < 0 || RHSVal < 0)
80  return -1;
81 
82  switch (BE->getOpcode()) {
83  default: return -1;
84  case MCBinaryExpr::Add: Res = LHSVal + RHSVal; break;
85  case MCBinaryExpr::Mul: Res = LHSVal * RHSVal; break;
86  }
87 
88  return Res < 0 ? -1 : Res;
89  }
90  }
91 
92  llvm_unreachable("Invalid expression kind!");
93 }
94 
95 namespace {
96 
97 struct PPCOperand;
98 
99 class PPCAsmParser : public MCTargetAsmParser {
100  bool IsPPC64;
101  bool IsDarwin;
102 
103  void Warning(SMLoc L, const Twine &Msg) { getParser().Warning(L, Msg); }
104 
105  bool isPPC64() const { return IsPPC64; }
106  bool isDarwin() const { return IsDarwin; }
107 
108  bool MatchRegisterName(unsigned &RegNo, int64_t &IntVal);
109 
110  bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;
111 
112  const MCExpr *ExtractModifierFromExpr(const MCExpr *E,
113  PPCMCExpr::VariantKind &Variant);
114  const MCExpr *FixupVariantKind(const MCExpr *E);
115  bool ParseExpression(const MCExpr *&EVal);
116  bool ParseDarwinExpression(const MCExpr *&EVal);
117 
118  bool ParseOperand(OperandVector &Operands);
119 
120  bool ParseDirectiveWord(unsigned Size, AsmToken ID);
121  bool ParseDirectiveTC(unsigned Size, AsmToken ID);
122  bool ParseDirectiveMachine(SMLoc L);
123  bool ParseDarwinDirectiveMachine(SMLoc L);
124  bool ParseDirectiveAbiVersion(SMLoc L);
125  bool ParseDirectiveLocalEntry(SMLoc L);
126 
127  bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
128  OperandVector &Operands, MCStreamer &Out,
129  uint64_t &ErrorInfo,
130  bool MatchingInlineAsm) override;
131 
132  void ProcessInstruction(MCInst &Inst, const OperandVector &Ops);
133 
134  /// @name Auto-generated Match Functions
135  /// {
136 
137 #define GET_ASSEMBLER_HEADER
138 #include "PPCGenAsmMatcher.inc"
139 
140  /// }
141 
142 
143 public:
144  PPCAsmParser(const MCSubtargetInfo &STI, MCAsmParser &,
145  const MCInstrInfo &MII, const MCTargetOptions &Options)
146  : MCTargetAsmParser(Options, STI, MII) {
147  // Check for 64-bit vs. 32-bit pointer mode.
148  const Triple &TheTriple = STI.getTargetTriple();
149  IsPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
150  TheTriple.getArch() == Triple::ppc64le);
151  IsDarwin = TheTriple.isMacOSX();
152  // Initialize the set of available features.
153  setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
154  }
155 
156  bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
157  SMLoc NameLoc, OperandVector &Operands) override;
158 
159  bool ParseDirective(AsmToken DirectiveID) override;
160 
161  unsigned validateTargetOperandClass(MCParsedAsmOperand &Op,
162  unsigned Kind) override;
163 
164  const MCExpr *applyModifierToExpr(const MCExpr *E,
165  MCSymbolRefExpr::VariantKind,
166  MCContext &Ctx) override;
167 };
168 
169 /// PPCOperand - Instances of this class represent a parsed PowerPC machine
170 /// instruction.
171 struct PPCOperand : public MCParsedAsmOperand {
172  enum KindTy {
173  Token,
174  Immediate,
175  ContextImmediate,
176  Expression,
177  TLSRegister
178  } Kind;
179 
180  SMLoc StartLoc, EndLoc;
181  bool IsPPC64;
182 
183  struct TokOp {
184  const char *Data;
185  unsigned Length;
186  };
187 
188  struct ImmOp {
189  int64_t Val;
190  };
191 
192  struct ExprOp {
193  const MCExpr *Val;
194  int64_t CRVal; // Cached result of EvaluateCRExpr(Val)
195  };
196 
197  struct TLSRegOp {
198  const MCSymbolRefExpr *Sym;
199  };
200 
201  union {
202  struct TokOp Tok;
203  struct ImmOp Imm;
204  struct ExprOp Expr;
205  struct TLSRegOp TLSReg;
206  };
207 
208  PPCOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
209 public:
210  PPCOperand(const PPCOperand &o) : MCParsedAsmOperand() {
211  Kind = o.Kind;
212  StartLoc = o.StartLoc;
213  EndLoc = o.EndLoc;
214  IsPPC64 = o.IsPPC64;
215  switch (Kind) {
216  case Token:
217  Tok = o.Tok;
218  break;
219  case Immediate:
220  case ContextImmediate:
221  Imm = o.Imm;
222  break;
223  case Expression:
224  Expr = o.Expr;
225  break;
226  case TLSRegister:
227  TLSReg = o.TLSReg;
228  break;
229  }
230  }
231 
232  // Disable use of sized deallocation due to overallocation of PPCOperand
233  // objects in CreateTokenWithStringCopy.
234  void operator delete(void *p) { ::operator delete(p); }
235 
236  /// getStartLoc - Get the location of the first token of this operand.
237  SMLoc getStartLoc() const override { return StartLoc; }
238 
239  /// getEndLoc - Get the location of the last token of this operand.
240  SMLoc getEndLoc() const override { return EndLoc; }
241 
242  /// getLocRange - Get the range between the first and last token of this
243  /// operand.
244  SMRange getLocRange() const { return SMRange(StartLoc, EndLoc); }
245 
246  /// isPPC64 - True if this operand is for an instruction in 64-bit mode.
247  bool isPPC64() const { return IsPPC64; }
248 
249  int64_t getImm() const {
250  assert(Kind == Immediate && "Invalid access!");
251  return Imm.Val;
252  }
253  int64_t getImmS16Context() const {
254  assert((Kind == Immediate || Kind == ContextImmediate) &&
255  "Invalid access!");
256  if (Kind == Immediate)
257  return Imm.Val;
258  return static_cast<int16_t>(Imm.Val);
259  }
260  int64_t getImmU16Context() const {
261  assert((Kind == Immediate || Kind == ContextImmediate) &&
262  "Invalid access!");
263  return Imm.Val;
264  }
265 
266  const MCExpr *getExpr() const {
267  assert(Kind == Expression && "Invalid access!");
268  return Expr.Val;
269  }
270 
271  int64_t getExprCRVal() const {
272  assert(Kind == Expression && "Invalid access!");
273  return Expr.CRVal;
274  }
275 
276  const MCExpr *getTLSReg() const {
277  assert(Kind == TLSRegister && "Invalid access!");
278  return TLSReg.Sym;
279  }
280 
281  unsigned getReg() const override {
282  assert(isRegNumber() && "Invalid access!");
283  return (unsigned) Imm.Val;
284  }
285 
286  unsigned getVSReg() const {
287  assert(isVSRegNumber() && "Invalid access!");
288  return (unsigned) Imm.Val;
289  }
290 
291  unsigned getCCReg() const {
292  assert(isCCRegNumber() && "Invalid access!");
293  return (unsigned) (Kind == Immediate ? Imm.Val : Expr.CRVal);
294  }
295 
296  unsigned getCRBit() const {
297  assert(isCRBitNumber() && "Invalid access!");
298  return (unsigned) (Kind == Immediate ? Imm.Val : Expr.CRVal);
299  }
300 
301  unsigned getCRBitMask() const {
302  assert(isCRBitMask() && "Invalid access!");
303  return 7 - countTrailingZeros<uint64_t>(Imm.Val);
304  }
305 
306  bool isToken() const override { return Kind == Token; }
307  bool isImm() const override {
308  return Kind == Immediate || Kind == Expression;
309  }
310  bool isU1Imm() const { return Kind == Immediate && isUInt<1>(getImm()); }
311  bool isU2Imm() const { return Kind == Immediate && isUInt<2>(getImm()); }
312  bool isU3Imm() const { return Kind == Immediate && isUInt<3>(getImm()); }
313  bool isU4Imm() const { return Kind == Immediate && isUInt<4>(getImm()); }
314  bool isU5Imm() const { return Kind == Immediate && isUInt<5>(getImm()); }
315  bool isS5Imm() const { return Kind == Immediate && isInt<5>(getImm()); }
316  bool isU6Imm() const { return Kind == Immediate && isUInt<6>(getImm()); }
317  bool isU6ImmX2() const { return Kind == Immediate &&
318  isUInt<6>(getImm()) &&
319  (getImm() & 1) == 0; }
320  bool isU7Imm() const { return Kind == Immediate && isUInt<7>(getImm()); }
321  bool isU7ImmX4() const { return Kind == Immediate &&
322  isUInt<7>(getImm()) &&
323  (getImm() & 3) == 0; }
324  bool isU8Imm() const { return Kind == Immediate && isUInt<8>(getImm()); }
325  bool isU8ImmX8() const { return Kind == Immediate &&
326  isUInt<8>(getImm()) &&
327  (getImm() & 7) == 0; }
328 
329  bool isU10Imm() const { return Kind == Immediate && isUInt<10>(getImm()); }
330  bool isU12Imm() const { return Kind == Immediate && isUInt<12>(getImm()); }
331  bool isU16Imm() const {
332  switch (Kind) {
333  case Expression:
334  return true;
335  case Immediate:
336  case ContextImmediate:
337  return isUInt<16>(getImmU16Context());
338  default:
339  return false;
340  }
341  }
342  bool isS16Imm() const {
343  switch (Kind) {
344  case Expression:
345  return true;
346  case Immediate:
347  case ContextImmediate:
348  return isInt<16>(getImmS16Context());
349  default:
350  return false;
351  }
352  }
353  bool isS16ImmX4() const { return Kind == Expression ||
354  (Kind == Immediate && isInt<16>(getImm()) &&
355  (getImm() & 3) == 0); }
356  bool isS16ImmX16() const { return Kind == Expression ||
357  (Kind == Immediate && isInt<16>(getImm()) &&
358  (getImm() & 15) == 0); }
359  bool isS17Imm() const {
360  switch (Kind) {
361  case Expression:
362  return true;
363  case Immediate:
364  case ContextImmediate:
365  return isInt<17>(getImmS16Context());
366  default:
367  return false;
368  }
369  }
370  bool isTLSReg() const { return Kind == TLSRegister; }
371  bool isDirectBr() const {
372  if (Kind == Expression)
373  return true;
374  if (Kind != Immediate)
375  return false;
376  // Operand must be 64-bit aligned, signed 27-bit immediate.
377  if ((getImm() & 3) != 0)
378  return false;
379  if (isInt<26>(getImm()))
380  return true;
381  if (!IsPPC64) {
382  // In 32-bit mode, large 32-bit quantities wrap around.
383  if (isUInt<32>(getImm()) && isInt<26>(static_cast<int32_t>(getImm())))
384  return true;
385  }
386  return false;
387  }
388  bool isCondBr() const { return Kind == Expression ||
389  (Kind == Immediate && isInt<16>(getImm()) &&
390  (getImm() & 3) == 0); }
391  bool isRegNumber() const { return Kind == Immediate && isUInt<5>(getImm()); }
392  bool isVSRegNumber() const {
393  return Kind == Immediate && isUInt<6>(getImm());
394  }
395  bool isCCRegNumber() const { return (Kind == Expression
396  && isUInt<3>(getExprCRVal())) ||
397  (Kind == Immediate
398  && isUInt<3>(getImm())); }
399  bool isCRBitNumber() const { return (Kind == Expression
400  && isUInt<5>(getExprCRVal())) ||
401  (Kind == Immediate
402  && isUInt<5>(getImm())); }
403  bool isCRBitMask() const { return Kind == Immediate && isUInt<8>(getImm()) &&
404  isPowerOf2_32(getImm()); }
405  bool isATBitsAsHint() const { return false; }
406  bool isMem() const override { return false; }
407  bool isReg() const override { return false; }
408 
409  void addRegOperands(MCInst &Inst, unsigned N) const {
410  llvm_unreachable("addRegOperands");
411  }
412 
413  void addRegGPRCOperands(MCInst &Inst, unsigned N) const {
414  assert(N == 1 && "Invalid number of operands!");
415  Inst.addOperand(MCOperand::createReg(RRegs[getReg()]));
416  }
417 
418  void addRegGPRCNoR0Operands(MCInst &Inst, unsigned N) const {
419  assert(N == 1 && "Invalid number of operands!");
420  Inst.addOperand(MCOperand::createReg(RRegsNoR0[getReg()]));
421  }
422 
423  void addRegG8RCOperands(MCInst &Inst, unsigned N) const {
424  assert(N == 1 && "Invalid number of operands!");
425  Inst.addOperand(MCOperand::createReg(XRegs[getReg()]));
426  }
427 
428  void addRegG8RCNoX0Operands(MCInst &Inst, unsigned N) const {
429  assert(N == 1 && "Invalid number of operands!");
430  Inst.addOperand(MCOperand::createReg(XRegsNoX0[getReg()]));
431  }
432 
433  void addRegGxRCOperands(MCInst &Inst, unsigned N) const {
434  if (isPPC64())
435  addRegG8RCOperands(Inst, N);
436  else
437  addRegGPRCOperands(Inst, N);
438  }
439 
440  void addRegGxRCNoR0Operands(MCInst &Inst, unsigned N) const {
441  if (isPPC64())
442  addRegG8RCNoX0Operands(Inst, N);
443  else
444  addRegGPRCNoR0Operands(Inst, N);
445  }
446 
447  void addRegF4RCOperands(MCInst &Inst, unsigned N) const {
448  assert(N == 1 && "Invalid number of operands!");
449  Inst.addOperand(MCOperand::createReg(FRegs[getReg()]));
450  }
451 
452  void addRegF8RCOperands(MCInst &Inst, unsigned N) const {
453  assert(N == 1 && "Invalid number of operands!");
454  Inst.addOperand(MCOperand::createReg(FRegs[getReg()]));
455  }
456 
457  void addRegVFRCOperands(MCInst &Inst, unsigned N) const {
458  assert(N == 1 && "Invalid number of operands!");
459  Inst.addOperand(MCOperand::createReg(VFRegs[getReg()]));
460  }
461 
462  void addRegVRRCOperands(MCInst &Inst, unsigned N) const {
463  assert(N == 1 && "Invalid number of operands!");
464  Inst.addOperand(MCOperand::createReg(VRegs[getReg()]));
465  }
466 
467  void addRegVSRCOperands(MCInst &Inst, unsigned N) const {
468  assert(N == 1 && "Invalid number of operands!");
469  Inst.addOperand(MCOperand::createReg(VSRegs[getVSReg()]));
470  }
471 
472  void addRegVSFRCOperands(MCInst &Inst, unsigned N) const {
473  assert(N == 1 && "Invalid number of operands!");
474  Inst.addOperand(MCOperand::createReg(VSFRegs[getVSReg()]));
475  }
476 
477  void addRegVSSRCOperands(MCInst &Inst, unsigned N) const {
478  assert(N == 1 && "Invalid number of operands!");
479  Inst.addOperand(MCOperand::createReg(VSSRegs[getVSReg()]));
480  }
481 
482  void addRegQFRCOperands(MCInst &Inst, unsigned N) const {
483  assert(N == 1 && "Invalid number of operands!");
484  Inst.addOperand(MCOperand::createReg(QFRegs[getReg()]));
485  }
486 
487  void addRegQSRCOperands(MCInst &Inst, unsigned N) const {
488  assert(N == 1 && "Invalid number of operands!");
489  Inst.addOperand(MCOperand::createReg(QFRegs[getReg()]));
490  }
491 
492  void addRegQBRCOperands(MCInst &Inst, unsigned N) const {
493  assert(N == 1 && "Invalid number of operands!");
494  Inst.addOperand(MCOperand::createReg(QFRegs[getReg()]));
495  }
496 
497  void addRegSPE4RCOperands(MCInst &Inst, unsigned N) const {
498  assert(N == 1 && "Invalid number of operands!");
499  Inst.addOperand(MCOperand::createReg(RRegs[getReg()]));
500  }
501 
502  void addRegSPERCOperands(MCInst &Inst, unsigned N) const {
503  assert(N == 1 && "Invalid number of operands!");
504  Inst.addOperand(MCOperand::createReg(SPERegs[getReg()]));
505  }
506 
507  void addRegCRBITRCOperands(MCInst &Inst, unsigned N) const {
508  assert(N == 1 && "Invalid number of operands!");
509  Inst.addOperand(MCOperand::createReg(CRBITRegs[getCRBit()]));
510  }
511 
512  void addRegCRRCOperands(MCInst &Inst, unsigned N) const {
513  assert(N == 1 && "Invalid number of operands!");
514  Inst.addOperand(MCOperand::createReg(CRRegs[getCCReg()]));
515  }
516 
517  void addCRBitMaskOperands(MCInst &Inst, unsigned N) const {
518  assert(N == 1 && "Invalid number of operands!");
519  Inst.addOperand(MCOperand::createReg(CRRegs[getCRBitMask()]));
520  }
521 
522  void addImmOperands(MCInst &Inst, unsigned N) const {
523  assert(N == 1 && "Invalid number of operands!");
524  if (Kind == Immediate)
525  Inst.addOperand(MCOperand::createImm(getImm()));
526  else
527  Inst.addOperand(MCOperand::createExpr(getExpr()));
528  }
529 
530  void addS16ImmOperands(MCInst &Inst, unsigned N) const {
531  assert(N == 1 && "Invalid number of operands!");
532  switch (Kind) {
533  case Immediate:
534  Inst.addOperand(MCOperand::createImm(getImm()));
535  break;
536  case ContextImmediate:
537  Inst.addOperand(MCOperand::createImm(getImmS16Context()));
538  break;
539  default:
540  Inst.addOperand(MCOperand::createExpr(getExpr()));
541  break;
542  }
543  }
544 
545  void addU16ImmOperands(MCInst &Inst, unsigned N) const {
546  assert(N == 1 && "Invalid number of operands!");
547  switch (Kind) {
548  case Immediate:
549  Inst.addOperand(MCOperand::createImm(getImm()));
550  break;
551  case ContextImmediate:
552  Inst.addOperand(MCOperand::createImm(getImmU16Context()));
553  break;
554  default:
555  Inst.addOperand(MCOperand::createExpr(getExpr()));
556  break;
557  }
558  }
559 
560  void addBranchTargetOperands(MCInst &Inst, unsigned N) const {
561  assert(N == 1 && "Invalid number of operands!");
562  if (Kind == Immediate)
563  Inst.addOperand(MCOperand::createImm(getImm() / 4));
564  else
565  Inst.addOperand(MCOperand::createExpr(getExpr()));
566  }
567 
568  void addTLSRegOperands(MCInst &Inst, unsigned N) const {
569  assert(N == 1 && "Invalid number of operands!");
570  Inst.addOperand(MCOperand::createExpr(getTLSReg()));
571  }
572 
573  StringRef getToken() const {
574  assert(Kind == Token && "Invalid access!");
575  return StringRef(Tok.Data, Tok.Length);
576  }
577 
578  void print(raw_ostream &OS) const override;
579 
580  static std::unique_ptr<PPCOperand> CreateToken(StringRef Str, SMLoc S,
581  bool IsPPC64) {
582  auto Op = make_unique<PPCOperand>(Token);
583  Op->Tok.Data = Str.data();
584  Op->Tok.Length = Str.size();
585  Op->StartLoc = S;
586  Op->EndLoc = S;
587  Op->IsPPC64 = IsPPC64;
588  return Op;
589  }
590 
591  static std::unique_ptr<PPCOperand>
592  CreateTokenWithStringCopy(StringRef Str, SMLoc S, bool IsPPC64) {
593  // Allocate extra memory for the string and copy it.
594  // FIXME: This is incorrect, Operands are owned by unique_ptr with a default
595  // deleter which will destroy them by simply using "delete", not correctly
596  // calling operator delete on this extra memory after calling the dtor
597  // explicitly.
598  void *Mem = ::operator new(sizeof(PPCOperand) + Str.size());
599  std::unique_ptr<PPCOperand> Op(new (Mem) PPCOperand(Token));
600  Op->Tok.Data = reinterpret_cast<const char *>(Op.get() + 1);
601  Op->Tok.Length = Str.size();
602  std::memcpy(const_cast<char *>(Op->Tok.Data), Str.data(), Str.size());
603  Op->StartLoc = S;
604  Op->EndLoc = S;
605  Op->IsPPC64 = IsPPC64;
606  return Op;
607  }
608 
609  static std::unique_ptr<PPCOperand> CreateImm(int64_t Val, SMLoc S, SMLoc E,
610  bool IsPPC64) {
611  auto Op = make_unique<PPCOperand>(Immediate);
612  Op->Imm.Val = Val;
613  Op->StartLoc = S;
614  Op->EndLoc = E;
615  Op->IsPPC64 = IsPPC64;
616  return Op;
617  }
618 
619  static std::unique_ptr<PPCOperand> CreateExpr(const MCExpr *Val, SMLoc S,
620  SMLoc E, bool IsPPC64) {
621  auto Op = make_unique<PPCOperand>(Expression);
622  Op->Expr.Val = Val;
623  Op->Expr.CRVal = EvaluateCRExpr(Val);
624  Op->StartLoc = S;
625  Op->EndLoc = E;
626  Op->IsPPC64 = IsPPC64;
627  return Op;
628  }
629 
630  static std::unique_ptr<PPCOperand>
631  CreateTLSReg(const MCSymbolRefExpr *Sym, SMLoc S, SMLoc E, bool IsPPC64) {
632  auto Op = make_unique<PPCOperand>(TLSRegister);
633  Op->TLSReg.Sym = Sym;
634  Op->StartLoc = S;
635  Op->EndLoc = E;
636  Op->IsPPC64 = IsPPC64;
637  return Op;
638  }
639 
640  static std::unique_ptr<PPCOperand>
641  CreateContextImm(int64_t Val, SMLoc S, SMLoc E, bool IsPPC64) {
642  auto Op = make_unique<PPCOperand>(ContextImmediate);
643  Op->Imm.Val = Val;
644  Op->StartLoc = S;
645  Op->EndLoc = E;
646  Op->IsPPC64 = IsPPC64;
647  return Op;
648  }
649 
650  static std::unique_ptr<PPCOperand>
651  CreateFromMCExpr(const MCExpr *Val, SMLoc S, SMLoc E, bool IsPPC64) {
652  if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Val))
653  return CreateImm(CE->getValue(), S, E, IsPPC64);
654 
655  if (const MCSymbolRefExpr *SRE = dyn_cast<MCSymbolRefExpr>(Val))
656  if (SRE->getKind() == MCSymbolRefExpr::VK_PPC_TLS)
657  return CreateTLSReg(SRE, S, E, IsPPC64);
658 
659  if (const PPCMCExpr *TE = dyn_cast<PPCMCExpr>(Val)) {
660  int64_t Res;
661  if (TE->evaluateAsConstant(Res))
662  return CreateContextImm(Res, S, E, IsPPC64);
663  }
664 
665  return CreateExpr(Val, S, E, IsPPC64);
666  }
667 };
668 
669 } // end anonymous namespace.
670 
671 void PPCOperand::print(raw_ostream &OS) const {
672  switch (Kind) {
673  case Token:
674  OS << "'" << getToken() << "'";
675  break;
676  case Immediate:
677  case ContextImmediate:
678  OS << getImm();
679  break;
680  case Expression:
681  OS << *getExpr();
682  break;
683  case TLSRegister:
684  OS << *getTLSReg();
685  break;
686  }
687 }
688 
689 static void
690 addNegOperand(MCInst &Inst, MCOperand &Op, MCContext &Ctx) {
691  if (Op.isImm()) {
692  Inst.addOperand(MCOperand::createImm(-Op.getImm()));
693  return;
694  }
695  const MCExpr *Expr = Op.getExpr();
696  if (const MCUnaryExpr *UnExpr = dyn_cast<MCUnaryExpr>(Expr)) {
697  if (UnExpr->getOpcode() == MCUnaryExpr::Minus) {
698  Inst.addOperand(MCOperand::createExpr(UnExpr->getSubExpr()));
699  return;
700  }
701  } else if (const MCBinaryExpr *BinExpr = dyn_cast<MCBinaryExpr>(Expr)) {
702  if (BinExpr->getOpcode() == MCBinaryExpr::Sub) {
703  const MCExpr *NE = MCBinaryExpr::createSub(BinExpr->getRHS(),
704  BinExpr->getLHS(), Ctx);
705  Inst.addOperand(MCOperand::createExpr(NE));
706  return;
707  }
708  }
709  Inst.addOperand(MCOperand::createExpr(MCUnaryExpr::createMinus(Expr, Ctx)));
710 }
711 
712 void PPCAsmParser::ProcessInstruction(MCInst &Inst,
713  const OperandVector &Operands) {
714  int Opcode = Inst.getOpcode();
715  switch (Opcode) {
716  case PPC::DCBTx:
717  case PPC::DCBTT:
718  case PPC::DCBTSTx:
719  case PPC::DCBTSTT: {
720  MCInst TmpInst;
721  TmpInst.setOpcode((Opcode == PPC::DCBTx || Opcode == PPC::DCBTT) ?
722  PPC::DCBT : PPC::DCBTST);
723  TmpInst.addOperand(MCOperand::createImm(
724  (Opcode == PPC::DCBTx || Opcode == PPC::DCBTSTx) ? 0 : 16));
725  TmpInst.addOperand(Inst.getOperand(0));
726  TmpInst.addOperand(Inst.getOperand(1));
727  Inst = TmpInst;
728  break;
729  }
730  case PPC::DCBTCT:
731  case PPC::DCBTDS: {
732  MCInst TmpInst;
733  TmpInst.setOpcode(PPC::DCBT);
734  TmpInst.addOperand(Inst.getOperand(2));
735  TmpInst.addOperand(Inst.getOperand(0));
736  TmpInst.addOperand(Inst.getOperand(1));
737  Inst = TmpInst;
738  break;
739  }
740  case PPC::DCBTSTCT:
741  case PPC::DCBTSTDS: {
742  MCInst TmpInst;
743  TmpInst.setOpcode(PPC::DCBTST);
744  TmpInst.addOperand(Inst.getOperand(2));
745  TmpInst.addOperand(Inst.getOperand(0));
746  TmpInst.addOperand(Inst.getOperand(1));
747  Inst = TmpInst;
748  break;
749  }
750  case PPC::DCBFx:
751  case PPC::DCBFL:
752  case PPC::DCBFLP: {
753  int L = 0;
754  if (Opcode == PPC::DCBFL)
755  L = 1;
756  else if (Opcode == PPC::DCBFLP)
757  L = 3;
758 
759  MCInst TmpInst;
760  TmpInst.setOpcode(PPC::DCBF);
761  TmpInst.addOperand(MCOperand::createImm(L));
762  TmpInst.addOperand(Inst.getOperand(0));
763  TmpInst.addOperand(Inst.getOperand(1));
764  Inst = TmpInst;
765  break;
766  }
767  case PPC::LAx: {
768  MCInst TmpInst;
769  TmpInst.setOpcode(PPC::LA);
770  TmpInst.addOperand(Inst.getOperand(0));
771  TmpInst.addOperand(Inst.getOperand(2));
772  TmpInst.addOperand(Inst.getOperand(1));
773  Inst = TmpInst;
774  break;
775  }
776  case PPC::SUBI: {
777  MCInst TmpInst;
778  TmpInst.setOpcode(PPC::ADDI);
779  TmpInst.addOperand(Inst.getOperand(0));
780  TmpInst.addOperand(Inst.getOperand(1));
781  addNegOperand(TmpInst, Inst.getOperand(2), getContext());
782  Inst = TmpInst;
783  break;
784  }
785  case PPC::SUBIS: {
786  MCInst TmpInst;
787  TmpInst.setOpcode(PPC::ADDIS);
788  TmpInst.addOperand(Inst.getOperand(0));
789  TmpInst.addOperand(Inst.getOperand(1));
790  addNegOperand(TmpInst, Inst.getOperand(2), getContext());
791  Inst = TmpInst;
792  break;
793  }
794  case PPC::SUBIC: {
795  MCInst TmpInst;
796  TmpInst.setOpcode(PPC::ADDIC);
797  TmpInst.addOperand(Inst.getOperand(0));
798  TmpInst.addOperand(Inst.getOperand(1));
799  addNegOperand(TmpInst, Inst.getOperand(2), getContext());
800  Inst = TmpInst;
801  break;
802  }
803  case PPC::SUBICo: {
804  MCInst TmpInst;
805  TmpInst.setOpcode(PPC::ADDICo);
806  TmpInst.addOperand(Inst.getOperand(0));
807  TmpInst.addOperand(Inst.getOperand(1));
808  addNegOperand(TmpInst, Inst.getOperand(2), getContext());
809  Inst = TmpInst;
810  break;
811  }
812  case PPC::EXTLWI:
813  case PPC::EXTLWIo: {
814  MCInst TmpInst;
815  int64_t N = Inst.getOperand(2).getImm();
816  int64_t B = Inst.getOperand(3).getImm();
817  TmpInst.setOpcode(Opcode == PPC::EXTLWI? PPC::RLWINM : PPC::RLWINMo);
818  TmpInst.addOperand(Inst.getOperand(0));
819  TmpInst.addOperand(Inst.getOperand(1));
820  TmpInst.addOperand(MCOperand::createImm(B));
821  TmpInst.addOperand(MCOperand::createImm(0));
822  TmpInst.addOperand(MCOperand::createImm(N - 1));
823  Inst = TmpInst;
824  break;
825  }
826  case PPC::EXTRWI:
827  case PPC::EXTRWIo: {
828  MCInst TmpInst;
829  int64_t N = Inst.getOperand(2).getImm();
830  int64_t B = Inst.getOperand(3).getImm();
831  TmpInst.setOpcode(Opcode == PPC::EXTRWI? PPC::RLWINM : PPC::RLWINMo);
832  TmpInst.addOperand(Inst.getOperand(0));
833  TmpInst.addOperand(Inst.getOperand(1));
834  TmpInst.addOperand(MCOperand::createImm(B + N));
835  TmpInst.addOperand(MCOperand::createImm(32 - N));
836  TmpInst.addOperand(MCOperand::createImm(31));
837  Inst = TmpInst;
838  break;
839  }
840  case PPC::INSLWI:
841  case PPC::INSLWIo: {
842  MCInst TmpInst;
843  int64_t N = Inst.getOperand(2).getImm();
844  int64_t B = Inst.getOperand(3).getImm();
845  TmpInst.setOpcode(Opcode == PPC::INSLWI? PPC::RLWIMI : PPC::RLWIMIo);
846  TmpInst.addOperand(Inst.getOperand(0));
847  TmpInst.addOperand(Inst.getOperand(0));
848  TmpInst.addOperand(Inst.getOperand(1));
849  TmpInst.addOperand(MCOperand::createImm(32 - B));
850  TmpInst.addOperand(MCOperand::createImm(B));
851  TmpInst.addOperand(MCOperand::createImm((B + N) - 1));
852  Inst = TmpInst;
853  break;
854  }
855  case PPC::INSRWI:
856  case PPC::INSRWIo: {
857  MCInst TmpInst;
858  int64_t N = Inst.getOperand(2).getImm();
859  int64_t B = Inst.getOperand(3).getImm();
860  TmpInst.setOpcode(Opcode == PPC::INSRWI? PPC::RLWIMI : PPC::RLWIMIo);
861  TmpInst.addOperand(Inst.getOperand(0));
862  TmpInst.addOperand(Inst.getOperand(0));
863  TmpInst.addOperand(Inst.getOperand(1));
864  TmpInst.addOperand(MCOperand::createImm(32 - (B + N)));
865  TmpInst.addOperand(MCOperand::createImm(B));
866  TmpInst.addOperand(MCOperand::createImm((B + N) - 1));
867  Inst = TmpInst;
868  break;
869  }
870  case PPC::ROTRWI:
871  case PPC::ROTRWIo: {
872  MCInst TmpInst;
873  int64_t N = Inst.getOperand(2).getImm();
874  TmpInst.setOpcode(Opcode == PPC::ROTRWI? PPC::RLWINM : PPC::RLWINMo);
875  TmpInst.addOperand(Inst.getOperand(0));
876  TmpInst.addOperand(Inst.getOperand(1));
877  TmpInst.addOperand(MCOperand::createImm(32 - N));
878  TmpInst.addOperand(MCOperand::createImm(0));
879  TmpInst.addOperand(MCOperand::createImm(31));
880  Inst = TmpInst;
881  break;
882  }
883  case PPC::SLWI:
884  case PPC::SLWIo: {
885  MCInst TmpInst;
886  int64_t N = Inst.getOperand(2).getImm();
887  TmpInst.setOpcode(Opcode == PPC::SLWI? PPC::RLWINM : PPC::RLWINMo);
888  TmpInst.addOperand(Inst.getOperand(0));
889  TmpInst.addOperand(Inst.getOperand(1));
890  TmpInst.addOperand(MCOperand::createImm(N));
891  TmpInst.addOperand(MCOperand::createImm(0));
892  TmpInst.addOperand(MCOperand::createImm(31 - N));
893  Inst = TmpInst;
894  break;
895  }
896  case PPC::SRWI:
897  case PPC::SRWIo: {
898  MCInst TmpInst;
899  int64_t N = Inst.getOperand(2).getImm();
900  TmpInst.setOpcode(Opcode == PPC::SRWI? PPC::RLWINM : PPC::RLWINMo);
901  TmpInst.addOperand(Inst.getOperand(0));
902  TmpInst.addOperand(Inst.getOperand(1));
903  TmpInst.addOperand(MCOperand::createImm(32 - N));
904  TmpInst.addOperand(MCOperand::createImm(N));
905  TmpInst.addOperand(MCOperand::createImm(31));
906  Inst = TmpInst;
907  break;
908  }
909  case PPC::CLRRWI:
910  case PPC::CLRRWIo: {
911  MCInst TmpInst;
912  int64_t N = Inst.getOperand(2).getImm();
913  TmpInst.setOpcode(Opcode == PPC::CLRRWI? PPC::RLWINM : PPC::RLWINMo);
914  TmpInst.addOperand(Inst.getOperand(0));
915  TmpInst.addOperand(Inst.getOperand(1));
916  TmpInst.addOperand(MCOperand::createImm(0));
917  TmpInst.addOperand(MCOperand::createImm(0));
918  TmpInst.addOperand(MCOperand::createImm(31 - N));
919  Inst = TmpInst;
920  break;
921  }
922  case PPC::CLRLSLWI:
923  case PPC::CLRLSLWIo: {
924  MCInst TmpInst;
925  int64_t B = Inst.getOperand(2).getImm();
926  int64_t N = Inst.getOperand(3).getImm();
927  TmpInst.setOpcode(Opcode == PPC::CLRLSLWI? PPC::RLWINM : PPC::RLWINMo);
928  TmpInst.addOperand(Inst.getOperand(0));
929  TmpInst.addOperand(Inst.getOperand(1));
930  TmpInst.addOperand(MCOperand::createImm(N));
931  TmpInst.addOperand(MCOperand::createImm(B - N));
932  TmpInst.addOperand(MCOperand::createImm(31 - N));
933  Inst = TmpInst;
934  break;
935  }
936  case PPC::EXTLDI:
937  case PPC::EXTLDIo: {
938  MCInst TmpInst;
939  int64_t N = Inst.getOperand(2).getImm();
940  int64_t B = Inst.getOperand(3).getImm();
941  TmpInst.setOpcode(Opcode == PPC::EXTLDI? PPC::RLDICR : PPC::RLDICRo);
942  TmpInst.addOperand(Inst.getOperand(0));
943  TmpInst.addOperand(Inst.getOperand(1));
944  TmpInst.addOperand(MCOperand::createImm(B));
945  TmpInst.addOperand(MCOperand::createImm(N - 1));
946  Inst = TmpInst;
947  break;
948  }
949  case PPC::EXTRDI:
950  case PPC::EXTRDIo: {
951  MCInst TmpInst;
952  int64_t N = Inst.getOperand(2).getImm();
953  int64_t B = Inst.getOperand(3).getImm();
954  TmpInst.setOpcode(Opcode == PPC::EXTRDI? PPC::RLDICL : PPC::RLDICLo);
955  TmpInst.addOperand(Inst.getOperand(0));
956  TmpInst.addOperand(Inst.getOperand(1));
957  TmpInst.addOperand(MCOperand::createImm(B + N));
958  TmpInst.addOperand(MCOperand::createImm(64 - N));
959  Inst = TmpInst;
960  break;
961  }
962  case PPC::INSRDI:
963  case PPC::INSRDIo: {
964  MCInst TmpInst;
965  int64_t N = Inst.getOperand(2).getImm();
966  int64_t B = Inst.getOperand(3).getImm();
967  TmpInst.setOpcode(Opcode == PPC::INSRDI? PPC::RLDIMI : PPC::RLDIMIo);
968  TmpInst.addOperand(Inst.getOperand(0));
969  TmpInst.addOperand(Inst.getOperand(0));
970  TmpInst.addOperand(Inst.getOperand(1));
971  TmpInst.addOperand(MCOperand::createImm(64 - (B + N)));
972  TmpInst.addOperand(MCOperand::createImm(B));
973  Inst = TmpInst;
974  break;
975  }
976  case PPC::ROTRDI:
977  case PPC::ROTRDIo: {
978  MCInst TmpInst;
979  int64_t N = Inst.getOperand(2).getImm();
980  TmpInst.setOpcode(Opcode == PPC::ROTRDI? PPC::RLDICL : PPC::RLDICLo);
981  TmpInst.addOperand(Inst.getOperand(0));
982  TmpInst.addOperand(Inst.getOperand(1));
983  TmpInst.addOperand(MCOperand::createImm(64 - N));
984  TmpInst.addOperand(MCOperand::createImm(0));
985  Inst = TmpInst;
986  break;
987  }
988  case PPC::SLDI:
989  case PPC::SLDIo: {
990  MCInst TmpInst;
991  int64_t N = Inst.getOperand(2).getImm();
992  TmpInst.setOpcode(Opcode == PPC::SLDI? PPC::RLDICR : PPC::RLDICRo);
993  TmpInst.addOperand(Inst.getOperand(0));
994  TmpInst.addOperand(Inst.getOperand(1));
995  TmpInst.addOperand(MCOperand::createImm(N));
996  TmpInst.addOperand(MCOperand::createImm(63 - N));
997  Inst = TmpInst;
998  break;
999  }
1000  case PPC::SUBPCIS: {
1001  MCInst TmpInst;
1002  int64_t N = Inst.getOperand(1).getImm();
1003  TmpInst.setOpcode(PPC::ADDPCIS);
1004  TmpInst.addOperand(Inst.getOperand(0));
1005  TmpInst.addOperand(MCOperand::createImm(-N));
1006  Inst = TmpInst;
1007  break;
1008  }
1009  case PPC::SRDI:
1010  case PPC::SRDIo: {
1011  MCInst TmpInst;
1012  int64_t N = Inst.getOperand(2).getImm();
1013  TmpInst.setOpcode(Opcode == PPC::SRDI? PPC::RLDICL : PPC::RLDICLo);
1014  TmpInst.addOperand(Inst.getOperand(0));
1015  TmpInst.addOperand(Inst.getOperand(1));
1016  TmpInst.addOperand(MCOperand::createImm(64 - N));
1017  TmpInst.addOperand(MCOperand::createImm(N));
1018  Inst = TmpInst;
1019  break;
1020  }
1021  case PPC::CLRRDI:
1022  case PPC::CLRRDIo: {
1023  MCInst TmpInst;
1024  int64_t N = Inst.getOperand(2).getImm();
1025  TmpInst.setOpcode(Opcode == PPC::CLRRDI? PPC::RLDICR : PPC::RLDICRo);
1026  TmpInst.addOperand(Inst.getOperand(0));
1027  TmpInst.addOperand(Inst.getOperand(1));
1028  TmpInst.addOperand(MCOperand::createImm(0));
1029  TmpInst.addOperand(MCOperand::createImm(63 - N));
1030  Inst = TmpInst;
1031  break;
1032  }
1033  case PPC::CLRLSLDI:
1034  case PPC::CLRLSLDIo: {
1035  MCInst TmpInst;
1036  int64_t B = Inst.getOperand(2).getImm();
1037  int64_t N = Inst.getOperand(3).getImm();
1038  TmpInst.setOpcode(Opcode == PPC::CLRLSLDI? PPC::RLDIC : PPC::RLDICo);
1039  TmpInst.addOperand(Inst.getOperand(0));
1040  TmpInst.addOperand(Inst.getOperand(1));
1041  TmpInst.addOperand(MCOperand::createImm(N));
1042  TmpInst.addOperand(MCOperand::createImm(B - N));
1043  Inst = TmpInst;
1044  break;
1045  }
1046  case PPC::RLWINMbm:
1047  case PPC::RLWINMobm: {
1048  unsigned MB, ME;
1049  int64_t BM = Inst.getOperand(3).getImm();
1050  if (!isRunOfOnes(BM, MB, ME))
1051  break;
1052 
1053  MCInst TmpInst;
1054  TmpInst.setOpcode(Opcode == PPC::RLWINMbm ? PPC::RLWINM : PPC::RLWINMo);
1055  TmpInst.addOperand(Inst.getOperand(0));
1056  TmpInst.addOperand(Inst.getOperand(1));
1057  TmpInst.addOperand(Inst.getOperand(2));
1058  TmpInst.addOperand(MCOperand::createImm(MB));
1059  TmpInst.addOperand(MCOperand::createImm(ME));
1060  Inst = TmpInst;
1061  break;
1062  }
1063  case PPC::RLWIMIbm:
1064  case PPC::RLWIMIobm: {
1065  unsigned MB, ME;
1066  int64_t BM = Inst.getOperand(3).getImm();
1067  if (!isRunOfOnes(BM, MB, ME))
1068  break;
1069 
1070  MCInst TmpInst;
1071  TmpInst.setOpcode(Opcode == PPC::RLWIMIbm ? PPC::RLWIMI : PPC::RLWIMIo);
1072  TmpInst.addOperand(Inst.getOperand(0));
1073  TmpInst.addOperand(Inst.getOperand(0)); // The tied operand.
1074  TmpInst.addOperand(Inst.getOperand(1));
1075  TmpInst.addOperand(Inst.getOperand(2));
1076  TmpInst.addOperand(MCOperand::createImm(MB));
1077  TmpInst.addOperand(MCOperand::createImm(ME));
1078  Inst = TmpInst;
1079  break;
1080  }
1081  case PPC::RLWNMbm:
1082  case PPC::RLWNMobm: {
1083  unsigned MB, ME;
1084  int64_t BM = Inst.getOperand(3).getImm();
1085  if (!isRunOfOnes(BM, MB, ME))
1086  break;
1087 
1088  MCInst TmpInst;
1089  TmpInst.setOpcode(Opcode == PPC::RLWNMbm ? PPC::RLWNM : PPC::RLWNMo);
1090  TmpInst.addOperand(Inst.getOperand(0));
1091  TmpInst.addOperand(Inst.getOperand(1));
1092  TmpInst.addOperand(Inst.getOperand(2));
1093  TmpInst.addOperand(MCOperand::createImm(MB));
1094  TmpInst.addOperand(MCOperand::createImm(ME));
1095  Inst = TmpInst;
1096  break;
1097  }
1098  case PPC::MFTB: {
1099  if (getSTI().getFeatureBits()[PPC::FeatureMFTB]) {
1100  assert(Inst.getNumOperands() == 2 && "Expecting two operands");
1101  Inst.setOpcode(PPC::MFSPR);
1102  }
1103  break;
1104  }
1105  case PPC::CP_COPYx:
1106  case PPC::CP_COPY_FIRST: {
1107  MCInst TmpInst;
1108  TmpInst.setOpcode(PPC::CP_COPY);
1109  TmpInst.addOperand(Inst.getOperand(0));
1110  TmpInst.addOperand(Inst.getOperand(1));
1111  TmpInst.addOperand(MCOperand::createImm(Opcode == PPC::CP_COPYx ? 0 : 1));
1112 
1113  Inst = TmpInst;
1114  break;
1115  }
1116  case PPC::CP_PASTEx :
1117  case PPC::CP_PASTE_LAST: {
1118  MCInst TmpInst;
1119  TmpInst.setOpcode(Opcode == PPC::CP_PASTEx ?
1120  PPC::CP_PASTE : PPC::CP_PASTEo);
1121  TmpInst.addOperand(Inst.getOperand(0));
1122  TmpInst.addOperand(Inst.getOperand(1));
1123  TmpInst.addOperand(MCOperand::createImm(Opcode == PPC::CP_PASTEx ? 0 : 1));
1124 
1125  Inst = TmpInst;
1126  break;
1127  }
1128  }
1129 }
1130 
1131 static std::string PPCMnemonicSpellCheck(StringRef S, uint64_t FBS,
1132  unsigned VariantID = 0);
1133 
1134 bool PPCAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
1135  OperandVector &Operands,
1136  MCStreamer &Out, uint64_t &ErrorInfo,
1137  bool MatchingInlineAsm) {
1138  MCInst Inst;
1139 
1140  switch (MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm)) {
1141  case Match_Success:
1142  // Post-process instructions (typically extended mnemonics)
1143  ProcessInstruction(Inst, Operands);
1144  Inst.setLoc(IDLoc);
1145  Out.EmitInstruction(Inst, getSTI());
1146  return false;
1147  case Match_MissingFeature:
1148  return Error(IDLoc, "instruction use requires an option to be enabled");
1149  case Match_MnemonicFail: {
1150  uint64_t FBS = ComputeAvailableFeatures(getSTI().getFeatureBits());
1151  std::string Suggestion = PPCMnemonicSpellCheck(
1152  ((PPCOperand &)*Operands[0]).getToken(), FBS);
1153  return Error(IDLoc, "invalid instruction" + Suggestion,
1154  ((PPCOperand &)*Operands[0]).getLocRange());
1155  }
1156  case Match_InvalidOperand: {
1157  SMLoc ErrorLoc = IDLoc;
1158  if (ErrorInfo != ~0ULL) {
1159  if (ErrorInfo >= Operands.size())
1160  return Error(IDLoc, "too few operands for instruction");
1161 
1162  ErrorLoc = ((PPCOperand &)*Operands[ErrorInfo]).getStartLoc();
1163  if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
1164  }
1165 
1166  return Error(ErrorLoc, "invalid operand for instruction");
1167  }
1168  }
1169 
1170  llvm_unreachable("Implement any new match types added!");
1171 }
1172 
1173 bool PPCAsmParser::MatchRegisterName(unsigned &RegNo, int64_t &IntVal) {
1174  if (getParser().getTok().is(AsmToken::Identifier)) {
1175  StringRef Name = getParser().getTok().getString();
1176  if (Name.equals_lower("lr")) {
1177  RegNo = isPPC64()? PPC::LR8 : PPC::LR;
1178  IntVal = 8;
1179  } else if (Name.equals_lower("ctr")) {
1180  RegNo = isPPC64()? PPC::CTR8 : PPC::CTR;
1181  IntVal = 9;
1182  } else if (Name.equals_lower("vrsave")) {
1183  RegNo = PPC::VRSAVE;
1184  IntVal = 256;
1185  } else if (Name.startswith_lower("r") &&
1186  !Name.substr(1).getAsInteger(10, IntVal) && IntVal < 32) {
1187  RegNo = isPPC64()? XRegs[IntVal] : RRegs[IntVal];
1188  } else if (Name.startswith_lower("f") &&
1189  !Name.substr(1).getAsInteger(10, IntVal) && IntVal < 32) {
1190  RegNo = FRegs[IntVal];
1191  } else if (Name.startswith_lower("vs") &&
1192  !Name.substr(2).getAsInteger(10, IntVal) && IntVal < 64) {
1193  RegNo = VSRegs[IntVal];
1194  } else if (Name.startswith_lower("v") &&
1195  !Name.substr(1).getAsInteger(10, IntVal) && IntVal < 32) {
1196  RegNo = VRegs[IntVal];
1197  } else if (Name.startswith_lower("q") &&
1198  !Name.substr(1).getAsInteger(10, IntVal) && IntVal < 32) {
1199  RegNo = QFRegs[IntVal];
1200  } else if (Name.startswith_lower("cr") &&
1201  !Name.substr(2).getAsInteger(10, IntVal) && IntVal < 8) {
1202  RegNo = CRRegs[IntVal];
1203  } else
1204  return true;
1205  getParser().Lex();
1206  return false;
1207  }
1208  return true;
1209 }
1210 
1211 bool PPCAsmParser::
1212 ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) {
1213  const AsmToken &Tok = getParser().getTok();
1214  StartLoc = Tok.getLoc();
1215  EndLoc = Tok.getEndLoc();
1216  RegNo = 0;
1217  int64_t IntVal;
1218  if (MatchRegisterName(RegNo, IntVal))
1219  return TokError("invalid register name");
1220  return false;
1221 }
1222 
1223 /// Extract \code @l/@ha \endcode modifier from expression. Recursively scan
1224 /// the expression and check for VK_PPC_LO/HI/HA
1225 /// symbol variants. If all symbols with modifier use the same
1226 /// variant, return the corresponding PPCMCExpr::VariantKind,
1227 /// and a modified expression using the default symbol variant.
1228 /// Otherwise, return NULL.
1229 const MCExpr *PPCAsmParser::
1230 ExtractModifierFromExpr(const MCExpr *E,
1231  PPCMCExpr::VariantKind &Variant) {
1232  MCContext &Context = getParser().getContext();
1233  Variant = PPCMCExpr::VK_PPC_None;
1234 
1235  switch (E->getKind()) {
1236  case MCExpr::Target:
1237  case MCExpr::Constant:
1238  return nullptr;
1239 
1240  case MCExpr::SymbolRef: {
1241  const MCSymbolRefExpr *SRE = cast<MCSymbolRefExpr>(E);
1242 
1243  switch (SRE->getKind()) {
1244  case MCSymbolRefExpr::VK_PPC_LO:
1245  Variant = PPCMCExpr::VK_PPC_LO;
1246  break;
1247  case MCSymbolRefExpr::VK_PPC_HI:
1248  Variant = PPCMCExpr::VK_PPC_HI;
1249  break;
1250  case MCSymbolRefExpr::VK_PPC_HA:
1251  Variant = PPCMCExpr::VK_PPC_HA;
1252  break;
1253  case MCSymbolRefExpr::VK_PPC_HIGH:
1254  Variant = PPCMCExpr::VK_PPC_HIGH;
1255  break;
1256  case MCSymbolRefExpr::VK_PPC_HIGHA:
1257  Variant = PPCMCExpr::VK_PPC_HIGHA;
1258  break;
1259  case MCSymbolRefExpr::VK_PPC_HIGHER:
1260  Variant = PPCMCExpr::VK_PPC_HIGHER;
1261  break;
1262  case MCSymbolRefExpr::VK_PPC_HIGHERA:
1263  Variant = PPCMCExpr::VK_PPC_HIGHERA;
1264  break;
1265  case MCSymbolRefExpr::VK_PPC_HIGHEST:
1266  Variant = PPCMCExpr::VK_PPC_HIGHEST;
1267  break;
1268  case MCSymbolRefExpr::VK_PPC_HIGHESTA:
1269  Variant = PPCMCExpr::VK_PPC_HIGHESTA;
1270  break;
1271  default:
1272  return nullptr;
1273  }
1274 
1275  return MCSymbolRefExpr::create(&SRE->getSymbol(), Context);
1276  }
1277 
1278  case MCExpr::Unary: {
1279  const MCUnaryExpr *UE = cast<MCUnaryExpr>(E);
1280  const MCExpr *Sub = ExtractModifierFromExpr(UE->getSubExpr(), Variant);
1281  if (!Sub)
1282  return nullptr;
1283  return MCUnaryExpr::create(UE->getOpcode(), Sub, Context);
1284  }
1285 
1286  case MCExpr::Binary: {
1287  const MCBinaryExpr *BE = cast<MCBinaryExpr>(E);
1288  PPCMCExpr::VariantKind LHSVariant, RHSVariant;
1289  const MCExpr *LHS = ExtractModifierFromExpr(BE->getLHS(), LHSVariant);
1290  const MCExpr *RHS = ExtractModifierFromExpr(BE->getRHS(), RHSVariant);
1291 
1292  if (!LHS && !RHS)
1293  return nullptr;
1294 
1295  if (!LHS) LHS = BE->getLHS();
1296  if (!RHS) RHS = BE->getRHS();
1297 
1298  if (LHSVariant == PPCMCExpr::VK_PPC_None)
1299  Variant = RHSVariant;
1300  else if (RHSVariant == PPCMCExpr::VK_PPC_None)
1301  Variant = LHSVariant;
1302  else if (LHSVariant == RHSVariant)
1303  Variant = LHSVariant;
1304  else
1305  return nullptr;
1306 
1307  return MCBinaryExpr::create(BE->getOpcode(), LHS, RHS, Context);
1308  }
1309  }
1310 
1311  llvm_unreachable("Invalid expression kind!");
1312 }
1313 
1314 /// Find all VK_TLSGD/VK_TLSLD symbol references in expression and replace
1315 /// them by VK_PPC_TLSGD/VK_PPC_TLSLD. This is necessary to avoid having
1316 /// _GLOBAL_OFFSET_TABLE_ created via ELFObjectWriter::RelocNeedsGOT.
1317 /// FIXME: This is a hack.
1318 const MCExpr *PPCAsmParser::
1319 FixupVariantKind(const MCExpr *E) {
1320  MCContext &Context = getParser().getContext();
1321 
1322  switch (E->getKind()) {
1323  case MCExpr::Target:
1324  case MCExpr::Constant:
1325  return E;
1326 
1327  case MCExpr::SymbolRef: {
1328  const MCSymbolRefExpr *SRE = cast<MCSymbolRefExpr>(E);
1329  MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
1330 
1331  switch (SRE->getKind()) {
1332  case MCSymbolRefExpr::VK_TLSGD:
1333  Variant = MCSymbolRefExpr::VK_PPC_TLSGD;
1334  break;
1335  case MCSymbolRefExpr::VK_TLSLD:
1336  Variant = MCSymbolRefExpr::VK_PPC_TLSLD;
1337  break;
1338  default:
1339  return E;
1340  }
1341  return MCSymbolRefExpr::create(&SRE->getSymbol(), Variant, Context);
1342  }
1343 
1344  case MCExpr::Unary: {
1345  const MCUnaryExpr *UE = cast<MCUnaryExpr>(E);
1346  const MCExpr *Sub = FixupVariantKind(UE->getSubExpr());
1347  if (Sub == UE->getSubExpr())
1348  return E;
1349  return MCUnaryExpr::create(UE->getOpcode(), Sub, Context);
1350  }
1351 
1352  case MCExpr::Binary: {
1353  const MCBinaryExpr *BE = cast<MCBinaryExpr>(E);
1354  const MCExpr *LHS = FixupVariantKind(BE->getLHS());
1355  const MCExpr *RHS = FixupVariantKind(BE->getRHS());
1356  if (LHS == BE->getLHS() && RHS == BE->getRHS())
1357  return E;
1358  return MCBinaryExpr::create(BE->getOpcode(), LHS, RHS, Context);
1359  }
1360  }
1361 
1362  llvm_unreachable("Invalid expression kind!");
1363 }
1364 
1365 /// ParseExpression. This differs from the default "parseExpression" in that
1366 /// it handles modifiers.
1367 bool PPCAsmParser::
1368 ParseExpression(const MCExpr *&EVal) {
1369 
1370  if (isDarwin())
1371  return ParseDarwinExpression(EVal);
1372 
1373  // (ELF Platforms)
1374  // Handle \code @l/@ha \endcode
1375  if (getParser().parseExpression(EVal))
1376  return true;
1377 
1378  EVal = FixupVariantKind(EVal);
1379 
1380  PPCMCExpr::VariantKind Variant;
1381  const MCExpr *E = ExtractModifierFromExpr(EVal, Variant);
1382  if (E)
1383  EVal = PPCMCExpr::create(Variant, E, false, getParser().getContext());
1384 
1385  return false;
1386 }
1387 
1388 /// ParseDarwinExpression. (MachO Platforms)
1389 /// This differs from the default "parseExpression" in that it handles detection
1390 /// of the \code hi16(), ha16() and lo16() \endcode modifiers. At present,
1391 /// parseExpression() doesn't recognise the modifiers when in the Darwin/MachO
1392 /// syntax form so it is done here. TODO: Determine if there is merit in
1393 /// arranging for this to be done at a higher level.
1394 bool PPCAsmParser::
1395 ParseDarwinExpression(const MCExpr *&EVal) {
1396  MCAsmParser &Parser = getParser();
1397  PPCMCExpr::VariantKind Variant = PPCMCExpr::VK_PPC_None;
1398  switch (getLexer().getKind()) {
1399  default:
1400  break;
1401  case AsmToken::Identifier:
1402  // Compiler-generated Darwin identifiers begin with L,l,_ or "; thus
1403  // something starting with any other char should be part of the
1404  // asm syntax. If handwritten asm includes an identifier like lo16,
1405  // then all bets are off - but no-one would do that, right?
1406  StringRef poss = Parser.getTok().getString();
1407  if (poss.equals_lower("lo16")) {
1408  Variant = PPCMCExpr::VK_PPC_LO;
1409  } else if (poss.equals_lower("hi16")) {
1410  Variant = PPCMCExpr::VK_PPC_HI;
1411  } else if (poss.equals_lower("ha16")) {
1412  Variant = PPCMCExpr::VK_PPC_HA;
1413  }
1414  if (Variant != PPCMCExpr::VK_PPC_None) {
1415  Parser.Lex(); // Eat the xx16
1416  if (getLexer().isNot(AsmToken::LParen))
1417  return Error(Parser.getTok().getLoc(), "expected '('");
1418  Parser.Lex(); // Eat the '('
1419  }
1420  break;
1421  }
1422 
1423  if (getParser().parseExpression(EVal))
1424  return true;
1425 
1426  if (Variant != PPCMCExpr::VK_PPC_None) {
1427  if (getLexer().isNot(AsmToken::RParen))
1428  return Error(Parser.getTok().getLoc(), "expected ')'");
1429  Parser.Lex(); // Eat the ')'
1430  EVal = PPCMCExpr::create(Variant, EVal, false, getParser().getContext());
1431  }
1432  return false;
1433 }
1434 
1435 /// ParseOperand
1436 /// This handles registers in the form 'NN', '%rNN' for ELF platforms and
1437 /// rNN for MachO.
1438 bool PPCAsmParser::ParseOperand(OperandVector &Operands) {
1439  MCAsmParser &Parser = getParser();
1440  SMLoc S = Parser.getTok().getLoc();
1441  SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
1442  const MCExpr *EVal;
1443 
1444  // Attempt to parse the next token as an immediate
1445  switch (getLexer().getKind()) {
1446  // Special handling for register names. These are interpreted
1447  // as immediates corresponding to the register number.
1448  case AsmToken::Percent:
1449  Parser.Lex(); // Eat the '%'.
1450  unsigned RegNo;
1451  int64_t IntVal;
1452  if (MatchRegisterName(RegNo, IntVal))
1453  return Error(S, "invalid register name");
1454 
1455  Operands.push_back(PPCOperand::CreateImm(IntVal, S, E, isPPC64()));
1456  return false;
1457 
1458  case AsmToken::Identifier:
1459  case AsmToken::LParen:
1460  case AsmToken::Plus:
1461  case AsmToken::Minus:
1462  case AsmToken::Integer:
1463  case AsmToken::Dot:
1464  case AsmToken::Dollar:
1465  case AsmToken::Exclaim:
1466  case AsmToken::Tilde:
1467  // Note that non-register-name identifiers from the compiler will begin
1468  // with '_', 'L'/'l' or '"'. Of course, handwritten asm could include
1469  // identifiers like r31foo - so we fall through in the event that parsing
1470  // a register name fails.
1471  if (isDarwin()) {
1472  unsigned RegNo;
1473  int64_t IntVal;
1474  if (!MatchRegisterName(RegNo, IntVal)) {
1475  Operands.push_back(PPCOperand::CreateImm(IntVal, S, E, isPPC64()));
1476  return false;
1477  }
1478  }
1479  // All other expressions
1480 
1481  if (!ParseExpression(EVal))
1482  break;
1483  // Fall-through
1484  LLVM_FALLTHROUGH;
1485  default:
1486  return Error(S, "unknown operand");
1487  }
1488 
1489  // Push the parsed operand into the list of operands
1490  Operands.push_back(PPCOperand::CreateFromMCExpr(EVal, S, E, isPPC64()));
1491 
1492  // Check whether this is a TLS call expression
1493  bool TLSCall = false;
1494  if (const MCSymbolRefExpr *Ref = dyn_cast<MCSymbolRefExpr>(EVal))
1495  TLSCall = Ref->getSymbol().getName() == "__tls_get_addr";
1496 
1497  if (TLSCall && getLexer().is(AsmToken::LParen)) {
1498  const MCExpr *TLSSym;
1499 
1500  Parser.Lex(); // Eat the '('.
1501  S = Parser.getTok().getLoc();
1502  if (ParseExpression(TLSSym))
1503  return Error(S, "invalid TLS call expression");
1504  if (getLexer().isNot(AsmToken::RParen))
1505  return Error(Parser.getTok().getLoc(), "missing ')'");
1506  E = Parser.getTok().getLoc();
1507  Parser.Lex(); // Eat the ')'.
1508 
1509  Operands.push_back(PPCOperand::CreateFromMCExpr(TLSSym, S, E, isPPC64()));
1510  }
1511 
1512  // Otherwise, check for D-form memory operands
1513  if (!TLSCall && getLexer().is(AsmToken::LParen)) {
1514  Parser.Lex(); // Eat the '('.
1515  S = Parser.getTok().getLoc();
1516 
1517  int64_t IntVal;
1518  switch (getLexer().getKind()) {
1519  case AsmToken::Percent:
1520  Parser.Lex(); // Eat the '%'.
1521  unsigned RegNo;
1522  if (MatchRegisterName(RegNo, IntVal))
1523  return Error(S, "invalid register name");
1524  break;
1525 
1526  case AsmToken::Integer:
1527  if (isDarwin())
1528  return Error(S, "unexpected integer value");
1529  else if (getParser().parseAbsoluteExpression(IntVal) || IntVal < 0 ||
1530  IntVal > 31)
1531  return Error(S, "invalid register number");
1532  break;
1533  case AsmToken::Identifier:
1534  if (isDarwin()) {
1535  unsigned RegNo;
1536  if (!MatchRegisterName(RegNo, IntVal)) {
1537  break;
1538  }
1539  }
1540  LLVM_FALLTHROUGH;
1541 
1542  default:
1543  return Error(S, "invalid memory operand");
1544  }
1545 
1546  E = Parser.getTok().getLoc();
1547  if (parseToken(AsmToken::RParen, "missing ')'"))
1548  return true;
1549  Operands.push_back(PPCOperand::CreateImm(IntVal, S, E, isPPC64()));
1550  }
1551 
1552  return false;
1553 }
1554 
1555 /// Parse an instruction mnemonic followed by its operands.
1556 bool PPCAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
1557  SMLoc NameLoc, OperandVector &Operands) {
1558  // The first operand is the token for the instruction name.
1559  // If the next character is a '+' or '-', we need to add it to the
1560  // instruction name, to match what TableGen is doing.
1561  std::string NewOpcode;
1562  if (parseOptionalToken(AsmToken::Plus)) {
1563  NewOpcode = Name;
1564  NewOpcode += '+';
1565  Name = NewOpcode;
1566  }
1567  if (parseOptionalToken(AsmToken::Minus)) {
1568  NewOpcode = Name;
1569  NewOpcode += '-';
1570  Name = NewOpcode;
1571  }
1572  // If the instruction ends in a '.', we need to create a separate
1573  // token for it, to match what TableGen is doing.
1574  size_t Dot = Name.find('.');
1575  StringRef Mnemonic = Name.slice(0, Dot);
1576  if (!NewOpcode.empty()) // Underlying memory for Name is volatile.
1577  Operands.push_back(
1578  PPCOperand::CreateTokenWithStringCopy(Mnemonic, NameLoc, isPPC64()));
1579  else
1580  Operands.push_back(PPCOperand::CreateToken(Mnemonic, NameLoc, isPPC64()));
1581  if (Dot != StringRef::npos) {
1582  SMLoc DotLoc = SMLoc::getFromPointer(NameLoc.getPointer() + Dot);
1583  StringRef DotStr = Name.slice(Dot, StringRef::npos);
1584  if (!NewOpcode.empty()) // Underlying memory for Name is volatile.
1585  Operands.push_back(
1586  PPCOperand::CreateTokenWithStringCopy(DotStr, DotLoc, isPPC64()));
1587  else
1588  Operands.push_back(PPCOperand::CreateToken(DotStr, DotLoc, isPPC64()));
1589  }
1590 
1591  // If there are no more operands then finish
1592  if (parseOptionalToken(AsmToken::EndOfStatement))
1593  return false;
1594 
1595  // Parse the first operand
1596  if (ParseOperand(Operands))
1597  return true;
1598 
1599  while (!parseOptionalToken(AsmToken::EndOfStatement)) {
1600  if (parseToken(AsmToken::Comma) || ParseOperand(Operands))
1601  return true;
1602  }
1603 
1604  // We'll now deal with an unfortunate special case: the syntax for the dcbt
1605  // and dcbtst instructions differs for server vs. embedded cores.
1606  // The syntax for dcbt is:
1607  // dcbt ra, rb, th [server]
1608  // dcbt th, ra, rb [embedded]
1609  // where th can be omitted when it is 0. dcbtst is the same. We take the
1610  // server form to be the default, so swap the operands if we're parsing for
1611  // an embedded core (they'll be swapped again upon printing).
1612  if (getSTI().getFeatureBits()[PPC::FeatureBookE] &&
1613  Operands.size() == 4 &&
1614  (Name == "dcbt" || Name == "dcbtst")) {
1615  std::swap(Operands[1], Operands[3]);
1616  std::swap(Operands[2], Operands[1]);
1617  }
1618 
1619  return false;
1620 }
1621 
1622 /// ParseDirective parses the PPC specific directives
1623 bool PPCAsmParser::ParseDirective(AsmToken DirectiveID) {
1624  StringRef IDVal = DirectiveID.getIdentifier();
1625  if (isDarwin()) {
1626  if (IDVal == ".machine")
1627  ParseDarwinDirectiveMachine(DirectiveID.getLoc());
1628  else
1629  return true;
1630  } else if (IDVal == ".word")
1631  ParseDirectiveWord(2, DirectiveID);
1632  else if (IDVal == ".llong")
1633  ParseDirectiveWord(8, DirectiveID);
1634  else if (IDVal == ".tc")
1635  ParseDirectiveTC(isPPC64() ? 8 : 4, DirectiveID);
1636  else if (IDVal == ".machine")
1637  ParseDirectiveMachine(DirectiveID.getLoc());
1638  else if (IDVal == ".abiversion")
1639  ParseDirectiveAbiVersion(DirectiveID.getLoc());
1640  else if (IDVal == ".localentry")
1641  ParseDirectiveLocalEntry(DirectiveID.getLoc());
1642  else
1643  return true;
1644  return false;
1645 }
1646 
1647 /// ParseDirectiveWord
1648 /// ::= .word [ expression (, expression)* ]
1649 bool PPCAsmParser::ParseDirectiveWord(unsigned Size, AsmToken ID) {
1650  auto parseOp = [&]() -> bool {
1651  const MCExpr *Value;
1652  SMLoc ExprLoc = getParser().getTok().getLoc();
1653  if (getParser().parseExpression(Value))
1654  return true;
1655  if (const auto *MCE = dyn_cast<MCConstantExpr>(Value)) {
1656  assert(Size <= 8 && "Invalid size");
1657  uint64_t IntValue = MCE->getValue();
1658  if (!isUIntN(8 * Size, IntValue) && !isIntN(8 * Size, IntValue))
1659  return Error(ExprLoc, "literal value out of range for '" +
1660  ID.getIdentifier() + "' directive");
1661  getStreamer().EmitIntValue(IntValue, Size);
1662  } else
1663  getStreamer().EmitValue(Value, Size, ExprLoc);
1664  return false;
1665  };
1666 
1667  if (parseMany(parseOp))
1668  return addErrorSuffix(" in '" + ID.getIdentifier() + "' directive");
1669  return false;
1670 }
1671 
1672 /// ParseDirectiveTC
1673 /// ::= .tc [ symbol (, expression)* ]
1674 bool PPCAsmParser::ParseDirectiveTC(unsigned Size, AsmToken ID) {
1675  MCAsmParser &Parser = getParser();
1676  // Skip TC symbol, which is only used with XCOFF.
1677  while (getLexer().isNot(AsmToken::EndOfStatement)
1678  && getLexer().isNot(AsmToken::Comma))
1679  Parser.Lex();
1680  if (parseToken(AsmToken::Comma))
1681  return addErrorSuffix(" in '.tc' directive");
1682 
1683  // Align to word size.
1684  getParser().getStreamer().EmitValueToAlignment(Size);
1685 
1686  // Emit expressions.
1687  return ParseDirectiveWord(Size, ID);
1688 }
1689 
1690 /// ParseDirectiveMachine (ELF platforms)
1691 /// ::= .machine [ cpu | "push" | "pop" ]
1692 bool PPCAsmParser::ParseDirectiveMachine(SMLoc L) {
1693  MCAsmParser &Parser = getParser();
1694  if (Parser.getTok().isNot(AsmToken::Identifier) &&
1695  Parser.getTok().isNot(AsmToken::String))
1696  return Error(L, "unexpected token in '.machine' directive");
1697 
1698  StringRef CPU = Parser.getTok().getIdentifier();
1699 
1700  // FIXME: Right now, the parser always allows any available
1701  // instruction, so the .machine directive is not useful.
1702  // Implement ".machine any" (by doing nothing) for the benefit
1703  // of existing assembler code. Likewise, we can then implement
1704  // ".machine push" and ".machine pop" as no-op.
1705  if (CPU != "any" && CPU != "push" && CPU != "pop")
1706  return TokError("unrecognized machine type");
1707 
1708  Parser.Lex();
1709 
1710  if (parseToken(AsmToken::EndOfStatement))
1711  return addErrorSuffix(" in '.machine' directive");
1712 
1713  PPCTargetStreamer &TStreamer =
1714  *static_cast<PPCTargetStreamer *>(
1715  getParser().getStreamer().getTargetStreamer());
1716  TStreamer.emitMachine(CPU);
1717 
1718  return false;
1719 }
1720 
1721 /// ParseDarwinDirectiveMachine (Mach-o platforms)
1722 /// ::= .machine cpu-identifier
1723 bool PPCAsmParser::ParseDarwinDirectiveMachine(SMLoc L) {
1724  MCAsmParser &Parser = getParser();
1725  if (Parser.getTok().isNot(AsmToken::Identifier) &&
1726  Parser.getTok().isNot(AsmToken::String))
1727  return Error(L, "unexpected token in directive");
1728 
1729  StringRef CPU = Parser.getTok().getIdentifier();
1730  Parser.Lex();
1731 
1732  // FIXME: this is only the 'default' set of cpu variants.
1733  // However we don't act on this information at present, this is simply
1734  // allowing parsing to proceed with minimal sanity checking.
1735  if (check(CPU != "ppc7400" && CPU != "ppc" && CPU != "ppc64", L,
1736  "unrecognized cpu type") ||
1737  check(isPPC64() && (CPU == "ppc7400" || CPU == "ppc"), L,
1738  "wrong cpu type specified for 64bit") ||
1739  check(!isPPC64() && CPU == "ppc64", L,
1740  "wrong cpu type specified for 32bit") ||
1741  parseToken(AsmToken::EndOfStatement))
1742  return addErrorSuffix(" in '.machine' directive");
1743  return false;
1744 }
1745 
1746 /// ParseDirectiveAbiVersion
1747 /// ::= .abiversion constant-expression
1748 bool PPCAsmParser::ParseDirectiveAbiVersion(SMLoc L) {
1749  int64_t AbiVersion;
1750  if (check(getParser().parseAbsoluteExpression(AbiVersion), L,
1751  "expected constant expression") ||
1752  parseToken(AsmToken::EndOfStatement))
1753  return addErrorSuffix(" in '.abiversion' directive");
1754 
1755  PPCTargetStreamer &TStreamer =
1756  *static_cast<PPCTargetStreamer *>(
1757  getParser().getStreamer().getTargetStreamer());
1758  TStreamer.emitAbiVersion(AbiVersion);
1759 
1760  return false;
1761 }
1762 
1763 /// ParseDirectiveLocalEntry
1764 /// ::= .localentry symbol, expression
1765 bool PPCAsmParser::ParseDirectiveLocalEntry(SMLoc L) {
1766  StringRef Name;
1767  if (getParser().parseIdentifier(Name))
1768  return Error(L, "expected identifier in '.localentry' directive");
1769 
1770  MCSymbolELF *Sym = cast<MCSymbolELF>(getContext().getOrCreateSymbol(Name));
1771  const MCExpr *Expr;
1772 
1773  if (parseToken(AsmToken::Comma) ||
1774  check(getParser().parseExpression(Expr), L, "expected expression") ||
1775  parseToken(AsmToken::EndOfStatement))
1776  return addErrorSuffix(" in '.localentry' directive");
1777 
1778  PPCTargetStreamer &TStreamer =
1779  *static_cast<PPCTargetStreamer *>(
1780  getParser().getStreamer().getTargetStreamer());
1781  TStreamer.emitLocalEntry(Sym, Expr);
1782 
1783  return false;
1784 }
1785 
1786 
1787 
1788 /// Force static initialization.
1789 extern "C" void LLVMInitializePowerPCAsmParser() {
1790  RegisterMCAsmParser<PPCAsmParser> A(getThePPC32Target());
1791  RegisterMCAsmParser<PPCAsmParser> B(getThePPC64Target());
1792  RegisterMCAsmParser<PPCAsmParser> C(getThePPC64LETarget());
1793 }
1794 
1795 #define GET_REGISTER_MATCHER
1796 #define GET_MATCHER_IMPLEMENTATION
1797 #define GET_MNEMONIC_SPELL_CHECKER
1798 #include "PPCGenAsmMatcher.inc"
1799 
1800 // Define this matcher function after the auto-generated include so we
1801 // have the match class enum definitions.
1802 unsigned PPCAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp,
1803  unsigned Kind) {
1804  // If the kind is a token for a literal immediate, check if our asm
1805  // operand matches. This is for InstAliases which have a fixed-value
1806  // immediate in the syntax.
1807  int64_t ImmVal;
1808  switch (Kind) {
1809  case MCK_0: ImmVal = 0; break;
1810  case MCK_1: ImmVal = 1; break;
1811  case MCK_2: ImmVal = 2; break;
1812  case MCK_3: ImmVal = 3; break;
1813  case MCK_4: ImmVal = 4; break;
1814  case MCK_5: ImmVal = 5; break;
1815  case MCK_6: ImmVal = 6; break;
1816  case MCK_7: ImmVal = 7; break;
1817  default: return Match_InvalidOperand;
1818  }
1819 
1820  PPCOperand &Op = static_cast<PPCOperand &>(AsmOp);
1821  if (Op.isImm() && Op.getImm() == ImmVal)
1822  return Match_Success;
1823 
1824  return Match_InvalidOperand;
1825 }
1826 
1827 const MCExpr *
1828 PPCAsmParser::applyModifierToExpr(const MCExpr *E,
1829  MCSymbolRefExpr::VariantKind Variant,
1830  MCContext &Ctx) {
1831  switch (Variant) {
1832  case MCSymbolRefExpr::VK_PPC_LO:
1833  return PPCMCExpr::create(PPCMCExpr::VK_PPC_LO, E, false, Ctx);
1834  case MCSymbolRefExpr::VK_PPC_HI:
1835  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HI, E, false, Ctx);
1836  case MCSymbolRefExpr::VK_PPC_HA:
1837  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HA, E, false, Ctx);
1838  case MCSymbolRefExpr::VK_PPC_HIGH:
1839  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HIGH, E, false, Ctx);
1840  case MCSymbolRefExpr::VK_PPC_HIGHA:
1841  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HIGHA, E, false, Ctx);
1842  case MCSymbolRefExpr::VK_PPC_HIGHER:
1843  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HIGHER, E, false, Ctx);
1844  case MCSymbolRefExpr::VK_PPC_HIGHERA:
1845  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HIGHERA, E, false, Ctx);
1846  case MCSymbolRefExpr::VK_PPC_HIGHEST:
1847  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HIGHEST, E, false, Ctx);
1848  case MCSymbolRefExpr::VK_PPC_HIGHESTA:
1849  return PPCMCExpr::create(PPCMCExpr::VK_PPC_HIGHESTA, E, false, Ctx);
1850  default:
1851  return nullptr;
1852  }
1853 }
isReg
static bool isReg(const MCInst &MI, unsigned OpNo)
Definition: MipsInstPrinter.cpp:31
C
uint64_t CallInst * C
Definition: NVVMIntrRange.cpp:66
llvm::isUInt< 32 >
constexpr bool isUInt< 32 >(uint64_t x)
Definition: MathExtras.h:348
llvm::SMRange
Represents a range in source code.
Definition: SMLoc.h:48
llvm::MCOperand::isImm
bool isImm() const
Definition: MCInst.h:58
EvaluateCRExpr
static int64_t EvaluateCRExpr(const MCExpr *E)
Definition: PPCAsmParser.cpp:38
llvm::StringRef::startswith_lower
LLVM_NODISCARD bool startswith_lower(StringRef Prefix) const
Check if this string starts with the given Prefix, ignoring case.
Definition: StringRef.cpp:46
llvm::AsmToken::getString
StringRef getString() const
Get the string for the current token, this includes all characters (for example, the quotes on string...
Definition: MCAsmMacro.h:110
Context
LLVMContext & Context
Definition: NVVMIntrRange.cpp:71
llvm::MCSymbolRefExpr::create
static const MCSymbolRefExpr * create(const MCSymbol *Symbol, MCContext &Ctx)
Definition: MCExpr.h:322
llvm
This class represents lattice values for constants.
Definition: AllocatorList.h:23
MatchRegisterName
static unsigned MatchRegisterName(StringRef Name)
llvm::Triple::isMacOSX
bool isMacOSX() const
isMacOSX - Is this a Mac OS X triple.
Definition: Triple.h:446
llvm::MCSymbolRefExpr::getKind
VariantKind getKind() const
Definition: MCExpr.h:337
llvm::StringRef::equals_lower
LLVM_NODISCARD bool equals_lower(StringRef RHS) const
equals_lower - Check for string equality, ignoring case.
Definition: StringRef.h:167
llvm::MCAsmParser
Generic assembler parser interface, for use by target specific assembly parsers.
Definition: MCAsmParser.h:109
Name
amdgpu Simplify well known AMD library false FunctionCallee Value const Twine & Name
Definition: AMDGPULibCalls.cpp:220
llvm::PPCMCExpr::create
static const PPCMCExpr * create(VariantKind Kind, const MCExpr *Expr, bool isDarwin, MCContext &Ctx)
Definition: PPCMCExpr.cpp:21
llvm::MCOperand::createExpr
static MCOperand createExpr(const MCExpr *Val)
Definition: MCInst.h:136
llvm::MCTargetAsmParser
MCTargetAsmParser - Generic interface to target specific assembly parsers.
Definition: MCTargetAsmParser.h:317
llvm::SmallVectorTemplateBase::push_back
void push_back(const T &Elt)
Definition: SmallVector.h:211
llvm::MCBinaryExpr::Mul
Multiplication.
Definition: MCExpr.h:434
llvm::getThePPC32Target
Target & getThePPC32Target()
Definition: PowerPCTargetInfo.cpp:14
llvm::AsmToken::isNot
bool isNot(TokenKind K) const
Definition: MCAsmMacro.h:83
llvm::MCUnaryExpr::getOpcode
Opcode getOpcode() const
Get the kind of this unary expression.
Definition: MCExpr.h:403
llvm::MCBinaryExpr::getLHS
const MCExpr * getLHS() const
Get the left-hand side expression of the binary operator.
Definition: MCExpr.h:563
llvm::MCAsmParser::Lex
virtual const AsmToken & Lex()=0
Get the next AsmToken in the stream, possibly handling file inclusion first.
llvm::isInt< 16 >
constexpr bool isInt< 16 >(int64_t x)
Definition: MathExtras.h:305
llvm::MCAsmParser::getTok
const AsmToken & getTok() const
Get the current AsmToken from the stream.
Definition: MCAsmParser.cpp:33
llvm::MCStreamer::EmitInstruction
virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI)
Emit the given Instruction into the current section.
Definition: MCStreamer.cpp:955
llvm::MCSubtargetInfo::getTargetTriple
const Triple & getTargetTriple() const
Definition: MCSubtargetInfo.h:67
llvm::AsmToken::getIdentifier
StringRef getIdentifier() const
Get the identifier string for the current token, which should be an identifier or a string...
Definition: MCAsmMacro.h:99
llvm::MCOperand::createReg
static MCOperand createReg(unsigned Reg)
Definition: MCInst.h:115
llvm::Twine
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:80
llvm::MCSubtargetInfo::getFeatureBits
const FeatureBitset & getFeatureBits() const
Definition: MCSubtargetInfo.h:70
llvm::SmallVectorImpl
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: APFloat.h:41
llvm::MCExpr
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
llvm::ModRefInfo::Ref
The access may reference the value stored in memory.
llvm::AsmToken
Target independent representation for an assembler token.
Definition: MCAsmMacro.h:21
llvm::MCSymbolRefExpr
Represent a reference to a symbol from inside an expression.
Definition: MCExpr.h:165
llvm::StringRef::slice
LLVM_NODISCARD StringRef slice(size_t Start, size_t End) const
Return a reference to the substring from [Start, End).
Definition: StringRef.h:679
llvm::StringRef::substr
LLVM_NODISCARD StringRef substr(size_t Start, size_t N=npos) const
Return a reference to the substring from [Start, Start + N).
Definition: StringRef.h:578
llvm::isMem
static bool isMem(const MachineInstr &MI, unsigned Op)
Definition: X86InstrInfo.h:160
llvm::MCParsedAsmOperand
MCParsedAsmOperand - This abstract class represents a source-level assembly instruction operand...
Definition: MCParsedAsmOperand.h:24
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:62
llvm::getToken
std::pair< StringRef, StringRef > getToken(StringRef Source, StringRef Delimiters=" \\\)
getToken - This function extracts one token from source, ignoring any leading characters that appear ...
Definition: StringExtras.cpp:37
llvm::MCBinaryExpr::createSub
static const MCBinaryExpr * createSub(const MCExpr *LHS, const MCExpr *RHS, MCContext &Ctx)
Definition: MCExpr.h:545
RegisterMCAsmParser
RegisterMCAsmParser - Helper template for registering a target specific assembly parser, for use in the target machine initialization function.
Definition: TargetRegistry.h:1143
llvm::MCBinaryExpr::getRHS
const MCExpr * getRHS() const
Get the right-hand side expression of the binary operator.
Definition: MCExpr.h:566
llvm::Triple::getArch
ArchType getArch() const
getArch - Get the parsed architecture type of this triple.
Definition: Triple.h:289
llvm::MCUnaryExpr
Unary assembler expressions.
Definition: MCExpr.h:359
llvm::PPCTargetStreamer::emitLocalEntry
virtual void emitLocalEntry(MCSymbolELF *S, const MCExpr *LocalOffset)=0
llvm::StringRef::size
LLVM_NODISCARD size_t size() const
size - Get the string size.
Definition: StringRef.h:130
llvm::AsmToken::getLoc
SMLoc getLoc() const
Definition: MCAsmLexer.cpp:27
llvm::MCOperand::getExpr
const MCExpr * getExpr() const
Definition: MCInst.h:95
llvm::getThePPC64Target
Target & getThePPC64Target()
Definition: PowerPCTargetInfo.cpp:18
llvm::MCExpr::Unary
Unary expressions.
Definition: MCExpr.h:41
Info
Analysis containing CSE Info
Definition: CSEInfo.cpp:20
llvm::MCInst
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:158
llvm::MCBinaryExpr::create
static const MCBinaryExpr * create(Opcode Op, const MCExpr *LHS, const MCExpr *RHS, MCContext &Ctx, SMLoc Loc=SMLoc())
Definition: MCExpr.cpp:152
llvm::MCOperand::getImm
int64_t getImm() const
Definition: MCInst.h:75
llvm::SMLoc::getPointer
const char * getPointer() const
Definition: SMLoc.h:34
llvm::MCStreamer
Streaming machine code generation interface.
Definition: MCStreamer.h:188
llvm::MCUnaryExpr::create
static const MCUnaryExpr * create(Opcode Op, const MCExpr *Expr, MCContext &Ctx, SMLoc Loc=SMLoc())
Definition: MCExpr.cpp:158
B
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
llvm::isUInt< 8 >
constexpr bool isUInt< 8 >(uint64_t x)
Definition: MathExtras.h:342
llvm::isPowerOf2_32
constexpr bool isPowerOf2_32(uint32_t Value)
Return true if the argument is a power of two > 0.
Definition: MathExtras.h:428
llvm::AsmToken::getEndLoc
SMLoc getEndLoc() const
Definition: MCAsmLexer.cpp:31
E
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
llvm::PPCTargetStreamer::emitAbiVersion
virtual void emitAbiVersion(int AbiVersion)=0
llvm::MCInstrInfo
Interface to description of machine instruction set.
Definition: MCInstrInfo.h:23
llvm::StringRef::find
LLVM_NODISCARD size_t find(char C, size_t From=0) const
Search for the first character C in the string.
Definition: StringRef.h:285
isDarwin
static bool isDarwin(object::Archive::Kind Kind)
Definition: ArchiveWriter.cpp:121
DEFINE_PPC_REGCLASSES
DEFINE_PPC_REGCLASSES
Definition: PPCAsmParser.cpp:32
LLVMInitializePowerPCAsmParser
void LLVMInitializePowerPCAsmParser()
Force static initialization.
Definition: PPCAsmParser.cpp:1789
print
static void print(raw_ostream &Out, object::Archive::Kind Kind, T Val)
Definition: ArchiveWriter.cpp:142
llvm::MCInst::getNumOperands
unsigned getNumOperands() const
Definition: MCInst.h:181
llvm::isIntN
bool isIntN(unsigned N, int64_t x)
Checks if an signed integer fits into the given (dynamic) bit width.
Definition: MathExtras.h:397
llvm::MCBinaryExpr
Binary assembler expressions.
Definition: MCExpr.h:416
llvm::SmallVectorBase::size
size_t size() const
Definition: SmallVector.h:52
llvm::MCInst::setLoc
void setLoc(SMLoc loc)
Definition: MCInst.h:176
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:135
addNegOperand
static void addNegOperand(MCInst &Inst, MCOperand &Op, MCContext &Ctx)
Definition: PPCAsmParser.cpp:690
llvm::Triple
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
llvm::MCUnaryExpr::createMinus
static const MCUnaryExpr * createMinus(const MCExpr *Expr, MCContext &Ctx, SMLoc Loc=SMLoc())
Definition: MCExpr.h:386
llvm::StringRef::getAsInteger
std::enable_if< std::numeric_limits< T >::is_signed, bool >::type getAsInteger(unsigned Radix, T &Result) const
Parse the current string as an integer of the specified radix.
Definition: StringRef.h:478
llvm::MCInst::setOpcode
void setOpcode(unsigned Op)
Definition: MCInst.h:170
llvm::MCSymbolRefExpr::getSymbol
const MCSymbol & getSymbol() const
Definition: MCExpr.h:335
llvm::MCExpr::getKind
ExprKind getKind() const
Definition: MCExpr.h:72
llvm::MCInst::getOperand
const MCOperand & getOperand(unsigned i) const
Definition: MCInst.h:179
std::swap
void swap(llvm::BitVector &LHS, llvm::BitVector &RHS)
Implement std::swap in terms of BitVector swap.
Definition: BitVector.h:940
llvm::getThePPC64LETarget
Target & getThePPC64LETarget()
Definition: PowerPCTargetInfo.cpp:22
getReg
static unsigned getReg(const void *D, unsigned RC, unsigned RegNo)
Definition: MipsDisassembler.cpp:580
llvm::ErrorInfo
Base class for user error types.
Definition: Error.h:344
llvm::SMLoc::getFromPointer
static SMLoc getFromPointer(const char *Ptr)
Definition: SMLoc.h:36
llvm::StringRef::npos
static const size_t npos
Definition: StringRef.h:50
llvm::HexagonMCInstrInfo::getExpr
MCExpr const & getExpr(MCExpr const &Expr)
Definition: HexagonMCInstrInfo.cpp:279
N
#define N
A
static GCRegistry::Add< ErlangGC > A("erlang", "erlang-compatible garbage collector")
llvm::MCSubtargetInfo
Generic base class for all target subtargets.
Definition: MCSubtargetInfo.h:35
llvm::MCExpr::SymbolRef
References to labels and assigned expressions.
Definition: MCExpr.h:40
Size
uint32_t Size
Definition: Profile.cpp:46
llvm::MCUnaryExpr::Minus
Unary minus.
Definition: MCExpr.h:363
llvm::isUInt< 16 >
constexpr bool isUInt< 16 >(uint64_t x)
Definition: MathExtras.h:345
llvm::MCBinaryExpr::getOpcode
Opcode getOpcode() const
Get the kind of this binary expression.
Definition: MCExpr.h:560
llvm::MCSymbol::getName
StringRef getName() const
getName - Get the symbol name.
Definition: MCSymbol.h:202
Kind
const unsigned Kind
Definition: ARMAsmParser.cpp:10585
llvm::StringRef::data
LLVM_NODISCARD const char * data() const
data - Get a pointer to the start of the string (which may not be null terminated).
Definition: StringRef.h:122
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
llvm::isRunOfOnes
static bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME)
Returns true iff Val consists of one contiguous run of 1s with any number of 0s on either side...
Definition: PPCMCTargetDesc.h:62
llvm::MCUnaryExpr::getSubExpr
const MCExpr * getSubExpr() const
Get the child of this unary expression.
Definition: MCExpr.h:406
llvm::Value
LLVM Value Representation.
Definition: Value.h:72
llvm::MCExpr::Constant
Constant expressions.
Definition: MCExpr.h:39
LLVM_FALLTHROUGH
#define LLVM_FALLTHROUGH
LLVM_FALLTHROUGH - Mark fallthrough cases in switch statements.
Definition: Compiler.h:250
llvm::MCExpr::Binary
Binary expressions.
Definition: MCExpr.h:38
llvm::raw_ostream
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:45
llvm::MCBinaryExpr::Sub
Subtraction.
Definition: MCExpr.h:440
llvm::MCInst::addOperand
void addOperand(const MCOperand &Op)
Definition: MCInst.h:183
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
raw_ostream.h
llvm::MCExpr::Target
Target specific expression.
Definition: MCExpr.h:42
llvm::PPCTargetStreamer::emitMachine
virtual void emitMachine(StringRef CPU)=0
llvm::SMLoc
Represents a location in source code.
Definition: SMLoc.h:23
llvm::MCInst::getOpcode
unsigned getOpcode() const
Definition: MCInst.h:171
llvm::isUIntN
bool isUIntN(unsigned N, uint64_t x)
Checks if an unsigned integer fits into the given (dynamic) bit width.
Definition: MathExtras.h:392
llvm::MCOperand
Instances of this class represent operands of the MCInst class.
Definition: MCInst.h:34
llvm::MCOperand::createImm
static MCOperand createImm(int64_t Val)
Definition: MCInst.h:122
PPCMnemonicSpellCheck
static std::string PPCMnemonicSpellCheck(StringRef S, uint64_t FBS, unsigned VariantID=0)
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