LLVM  14.0.0git
AArch64Disassembler.cpp
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1 //===- AArch64Disassembler.cpp - Disassembler for AArch64 -----------------===//
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 //
10 //===----------------------------------------------------------------------===//
11 
12 #include "AArch64Disassembler.h"
13 #include "AArch64ExternalSymbolizer.h"
14 #include "MCTargetDesc/AArch64AddressingModes.h"
15 #include "MCTargetDesc/AArch64MCTargetDesc.h"
16 #include "TargetInfo/AArch64TargetInfo.h"
17 #include "Utils/AArch64BaseInfo.h"
18 #include "llvm-c/Disassembler.h"
19 #include "llvm/MC/MCDisassembler/MCRelocationInfo.h"
20 #include "llvm/MC/MCFixedLenDisassembler.h"
21 #include "llvm/MC/MCInst.h"
22 #include "llvm/MC/MCRegisterInfo.h"
23 #include "llvm/MC/MCSubtargetInfo.h"
24 #include "llvm/Support/Compiler.h"
25 #include "llvm/Support/Debug.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/TargetRegistry.h"
28 #include <algorithm>
29 #include <memory>
30 
31 using namespace llvm;
32 
33 #define DEBUG_TYPE "aarch64-disassembler"
34 
35 // Pull DecodeStatus and its enum values into the global namespace.
36 using DecodeStatus = MCDisassembler::DecodeStatus;
37 
38 // Forward declare these because the autogenerated code will reference them.
39 // Definitions are further down.
40 static DecodeStatus DecodeFPR128RegisterClass(MCInst &Inst,
41  unsigned RegNo, uint64_t Address,
42  const void *Decoder);
43 static DecodeStatus DecodeFPR128_loRegisterClass(MCInst &Inst,
44  unsigned RegNo,
45  uint64_t Address,
46  const void *Decoder);
47 static DecodeStatus DecodeFPR64RegisterClass(MCInst &Inst, unsigned RegNo,
48  uint64_t Address,
49  const void *Decoder);
50 static DecodeStatus DecodeFPR32RegisterClass(MCInst &Inst, unsigned RegNo,
51  uint64_t Address,
52  const void *Decoder);
53 static DecodeStatus DecodeFPR16RegisterClass(MCInst &Inst, unsigned RegNo,
54  uint64_t Address,
55  const void *Decoder);
56 static DecodeStatus DecodeFPR8RegisterClass(MCInst &Inst, unsigned RegNo,
57  uint64_t Address,
58  const void *Decoder);
59 static DecodeStatus DecodeGPR64commonRegisterClass(MCInst &Inst, unsigned RegNo,
60  uint64_t Address,
61  const void *Decoder);
62 static DecodeStatus DecodeGPR64RegisterClass(MCInst &Inst, unsigned RegNo,
63  uint64_t Address,
64  const void *Decoder);
65 static DecodeStatus DecodeGPR64x8ClassRegisterClass(MCInst &Inst,
66  unsigned RegNo,
67  uint64_t Address,
68  const void *Decoder);
69 static DecodeStatus DecodeGPR64spRegisterClass(MCInst &Inst,
70  unsigned RegNo, uint64_t Address,
71  const void *Decoder);
72 static DecodeStatus DecodeMatrixIndexGPR32_12_15RegisterClass(MCInst &Inst,
73  unsigned RegNo,
74  uint64_t Address,
75  const void *Decoder);
76 static DecodeStatus DecodeGPR32RegisterClass(MCInst &Inst, unsigned RegNo,
77  uint64_t Address,
78  const void *Decoder);
79 static DecodeStatus DecodeGPR32spRegisterClass(MCInst &Inst,
80  unsigned RegNo, uint64_t Address,
81  const void *Decoder);
82 static DecodeStatus DecodeQQRegisterClass(MCInst &Inst, unsigned RegNo,
83  uint64_t Address,
84  const void *Decoder);
85 static DecodeStatus DecodeQQQRegisterClass(MCInst &Inst, unsigned RegNo,
86  uint64_t Address,
87  const void *Decoder);
88 static DecodeStatus DecodeQQQQRegisterClass(MCInst &Inst, unsigned RegNo,
89  uint64_t Address,
90  const void *Decoder);
91 static DecodeStatus DecodeDDRegisterClass(MCInst &Inst, unsigned RegNo,
92  uint64_t Address,
93  const void *Decoder);
94 static DecodeStatus DecodeDDDRegisterClass(MCInst &Inst, unsigned RegNo,
95  uint64_t Address,
96  const void *Decoder);
97 static DecodeStatus DecodeDDDDRegisterClass(MCInst &Inst, unsigned RegNo,
98  uint64_t Address,
99  const void *Decoder);
100 static DecodeStatus DecodeZPRRegisterClass(MCInst &Inst, unsigned RegNo,
101  uint64_t Address,
102  const void *Decoder);
103 static DecodeStatus DecodeZPR_4bRegisterClass(MCInst &Inst, unsigned RegNo,
104  uint64_t Address,
105  const void *Decoder);
106 static DecodeStatus DecodeZPR_3bRegisterClass(MCInst &Inst, unsigned RegNo,
107  uint64_t Address,
108  const void *Decoder);
109 static DecodeStatus DecodeZPR2RegisterClass(MCInst &Inst, unsigned RegNo,
110  uint64_t Address,
111  const void *Decoder);
112 static DecodeStatus DecodeZPR3RegisterClass(MCInst &Inst, unsigned RegNo,
113  uint64_t Address,
114  const void *Decoder);
115 static DecodeStatus DecodeZPR4RegisterClass(MCInst &Inst, unsigned RegNo,
116  uint64_t Address,
117  const void *Decoder);
118 template <unsigned NumBitsForTile>
119 static DecodeStatus DecodeMatrixTile(MCInst &Inst, unsigned RegNo,
120  uint64_t Address, const void *Decoder);
121 static DecodeStatus DecodeMatrixTileListRegisterClass(MCInst &Inst,
122  unsigned RegMask,
123  uint64_t Address,
124  const void *Decoder);
125 static DecodeStatus DecodePPRRegisterClass(MCInst &Inst, unsigned RegNo,
126  uint64_t Address,
127  const void *Decoder);
128 static DecodeStatus DecodePPR_3bRegisterClass(MCInst &Inst, unsigned RegNo,
129  uint64_t Address,
130  const void *Decoder);
131 
132 static DecodeStatus DecodeFixedPointScaleImm32(MCInst &Inst, unsigned Imm,
133  uint64_t Address,
134  const void *Decoder);
135 static DecodeStatus DecodeFixedPointScaleImm64(MCInst &Inst, unsigned Imm,
136  uint64_t Address,
137  const void *Decoder);
138 static DecodeStatus DecodePCRelLabel19(MCInst &Inst, unsigned Imm,
139  uint64_t Address, const void *Decoder);
140 static DecodeStatus DecodeMemExtend(MCInst &Inst, unsigned Imm,
141  uint64_t Address, const void *Decoder);
142 static DecodeStatus DecodeMRSSystemRegister(MCInst &Inst, unsigned Imm,
143  uint64_t Address, const void *Decoder);
144 static DecodeStatus DecodeMSRSystemRegister(MCInst &Inst, unsigned Imm,
145  uint64_t Address, const void *Decoder);
146 static DecodeStatus DecodeThreeAddrSRegInstruction(MCInst &Inst, uint32_t insn,
147  uint64_t Address,
148  const void *Decoder);
149 static DecodeStatus DecodeMoveImmInstruction(MCInst &Inst, uint32_t insn,
150  uint64_t Address,
151  const void *Decoder);
152 static DecodeStatus DecodeUnsignedLdStInstruction(MCInst &Inst, uint32_t insn,
153  uint64_t Address,
154  const void *Decoder);
155 static DecodeStatus DecodeSignedLdStInstruction(MCInst &Inst, uint32_t insn,
156  uint64_t Address,
157  const void *Decoder);
158 static DecodeStatus DecodeExclusiveLdStInstruction(MCInst &Inst, uint32_t insn,
159  uint64_t Address,
160  const void *Decoder);
161 static DecodeStatus DecodePairLdStInstruction(MCInst &Inst, uint32_t insn,
162  uint64_t Address,
163  const void *Decoder);
164 static DecodeStatus DecodeAuthLoadInstruction(MCInst &Inst, uint32_t insn,
165  uint64_t Address,
166  const void *Decoder);
167 static DecodeStatus DecodeAddSubERegInstruction(MCInst &Inst, uint32_t insn,
168  uint64_t Address,
169  const void *Decoder);
170 static DecodeStatus DecodeLogicalImmInstruction(MCInst &Inst, uint32_t insn,
171  uint64_t Address,
172  const void *Decoder);
173 static DecodeStatus DecodeModImmInstruction(MCInst &Inst, uint32_t insn,
174  uint64_t Address,
175  const void *Decoder);
176 static DecodeStatus DecodeModImmTiedInstruction(MCInst &Inst, uint32_t insn,
177  uint64_t Address,
178  const void *Decoder);
179 static DecodeStatus DecodeAdrInstruction(MCInst &Inst, uint32_t insn,
180  uint64_t Address, const void *Decoder);
181 static DecodeStatus DecodeAddSubImmShift(MCInst &Inst, uint32_t insn,
182  uint64_t Address, const void *Decoder);
183 static DecodeStatus DecodeUnconditionalBranch(MCInst &Inst, uint32_t insn,
184  uint64_t Address,
185  const void *Decoder);
186 static DecodeStatus DecodeSystemPStateInstruction(MCInst &Inst, uint32_t insn,
187  uint64_t Address,
188  const void *Decoder);
189 static DecodeStatus DecodeTestAndBranch(MCInst &Inst, uint32_t insn,
190  uint64_t Address, const void *Decoder);
191 
192 static DecodeStatus DecodeFMOVLaneInstruction(MCInst &Inst, unsigned Insn,
193  uint64_t Address,
194  const void *Decoder);
195 static DecodeStatus DecodeVecShiftR64Imm(MCInst &Inst, unsigned Imm,
196  uint64_t Addr, const void *Decoder);
197 static DecodeStatus DecodeVecShiftR64ImmNarrow(MCInst &Inst, unsigned Imm,
198  uint64_t Addr,
199  const void *Decoder);
200 static DecodeStatus DecodeVecShiftR32Imm(MCInst &Inst, unsigned Imm,
201  uint64_t Addr, const void *Decoder);
202 static DecodeStatus DecodeVecShiftR32ImmNarrow(MCInst &Inst, unsigned Imm,
203  uint64_t Addr,
204  const void *Decoder);
205 static DecodeStatus DecodeVecShiftR16Imm(MCInst &Inst, unsigned Imm,
206  uint64_t Addr, const void *Decoder);
207 static DecodeStatus DecodeVecShiftR16ImmNarrow(MCInst &Inst, unsigned Imm,
208  uint64_t Addr,
209  const void *Decoder);
210 static DecodeStatus DecodeVecShiftR8Imm(MCInst &Inst, unsigned Imm,
211  uint64_t Addr, const void *Decoder);
212 static DecodeStatus DecodeVecShiftL64Imm(MCInst &Inst, unsigned Imm,
213  uint64_t Addr, const void *Decoder);
214 static DecodeStatus DecodeVecShiftL32Imm(MCInst &Inst, unsigned Imm,
215  uint64_t Addr, const void *Decoder);
216 static DecodeStatus DecodeVecShiftL16Imm(MCInst &Inst, unsigned Imm,
217  uint64_t Addr, const void *Decoder);
218 static DecodeStatus DecodeVecShiftL8Imm(MCInst &Inst, unsigned Imm,
219  uint64_t Addr, const void *Decoder);
220 static DecodeStatus DecodeWSeqPairsClassRegisterClass(MCInst &Inst,
221  unsigned RegNo,
222  uint64_t Addr,
223  const void *Decoder);
224 static DecodeStatus DecodeXSeqPairsClassRegisterClass(MCInst &Inst,
225  unsigned RegNo,
226  uint64_t Addr,
227  const void *Decoder);
228 static DecodeStatus DecodeSVELogicalImmInstruction(llvm::MCInst &Inst,
229  uint32_t insn,
230  uint64_t Address,
231  const void *Decoder);
232 template<int Bits>
233 static DecodeStatus DecodeSImm(llvm::MCInst &Inst, uint64_t Imm,
234  uint64_t Address, const void *Decoder);
235 template <int ElementWidth>
236 static DecodeStatus DecodeImm8OptLsl(MCInst &Inst, unsigned Imm,
237  uint64_t Addr, const void *Decoder);
238 static DecodeStatus DecodeSVEIncDecImm(MCInst &Inst, unsigned Imm,
239  uint64_t Addr, const void *Decoder);
240 static DecodeStatus DecodeSVCROp(MCInst &Inst, unsigned Imm, uint64_t Address,
241  const void *Decoder);
242 
243 static bool Check(DecodeStatus &Out, DecodeStatus In) {
244  switch (In) {
245  case MCDisassembler::Success:
246  // Out stays the same.
247  return true;
248  case MCDisassembler::SoftFail:
249  Out = In;
250  return true;
251  case MCDisassembler::Fail:
252  Out = In;
253  return false;
254  }
255  llvm_unreachable("Invalid DecodeStatus!");
256 }
257 
258 #include "AArch64GenDisassemblerTables.inc"
259 #include "AArch64GenInstrInfo.inc"
260 
261 #define Success MCDisassembler::Success
262 #define Fail MCDisassembler::Fail
263 #define SoftFail MCDisassembler::SoftFail
264 
265 static MCDisassembler *createAArch64Disassembler(const Target &T,
266  const MCSubtargetInfo &STI,
267  MCContext &Ctx) {
268  return new AArch64Disassembler(STI, Ctx);
269 }
270 
271 DecodeStatus AArch64Disassembler::getInstruction(MCInst &MI, uint64_t &Size,
272  ArrayRef<uint8_t> Bytes,
273  uint64_t Address,
274  raw_ostream &CS) const {
275  CommentStream = &CS;
276 
277  Size = 0;
278  // We want to read exactly 4 bytes of data.
279  if (Bytes.size() < 4)
280  return Fail;
281  Size = 4;
282 
283  // Encoded as a small-endian 32-bit word in the stream.
284  uint32_t Insn =
285  (Bytes[3] << 24) | (Bytes[2] << 16) | (Bytes[1] << 8) | (Bytes[0] << 0);
286 
287  const uint8_t *Tables[] = {DecoderTable32, DecoderTableFallback32};
288 
289  for (auto Table : Tables) {
290  DecodeStatus Result =
291  decodeInstruction(Table, MI, Insn, Address, this, STI);
292 
293  switch (MI.getOpcode()) {
294  default:
295  break;
296  // For Scalable Matrix Extension (SME) instructions that have an implicit
297  // operand for the accumulator (ZA) which isn't encoded, manually insert
298  // operand.
299  case AArch64::LDR_ZA:
300  case AArch64::STR_ZA: {
301  MI.insert(MI.begin(), MCOperand::createReg(AArch64::ZA));
302  // Spill and fill instructions have a single immediate used for both the
303  // vector select offset and optional memory offset. Replicate the decoded
304  // immediate.
305  const MCOperand &Imm4Op = MI.getOperand(2);
306  assert(Imm4Op.isImm() && "Unexpected operand type!");
307  MI.addOperand(Imm4Op);
308  break;
309  }
310  case AArch64::LD1_MXIPXX_H_B:
311  case AArch64::LD1_MXIPXX_V_B:
312  case AArch64::ST1_MXIPXX_H_B:
313  case AArch64::ST1_MXIPXX_V_B:
314  case AArch64::INSERT_MXIPZ_H_B:
315  case AArch64::INSERT_MXIPZ_V_B:
316  // e.g.
317  // MOVA ZA0<HV>.B[<Ws>, <imm>], <Pg>/M, <Zn>.B
318  // ^ insert implicit 8-bit element tile
319  MI.insert(MI.begin(), MCOperand::createReg(AArch64::ZAB0));
320  break;
321  case AArch64::EXTRACT_ZPMXI_H_B:
322  case AArch64::EXTRACT_ZPMXI_V_B:
323  // MOVA <Zd>.B, <Pg>/M, ZA0<HV>.B[<Ws>, <imm>]
324  // ^ insert implicit 8-bit element tile
325  MI.insert(MI.begin()+2, MCOperand::createReg(AArch64::ZAB0));
326  break;
327  }
328 
329  if (Result != MCDisassembler::Fail)
330  return Result;
331  }
332 
333  return MCDisassembler::Fail;
334 }
335 
336 static MCSymbolizer *
337 createAArch64ExternalSymbolizer(const Triple &TT, LLVMOpInfoCallback GetOpInfo,
338  LLVMSymbolLookupCallback SymbolLookUp,
339  void *DisInfo, MCContext *Ctx,
340  std::unique_ptr<MCRelocationInfo> &&RelInfo) {
341  return new AArch64ExternalSymbolizer(*Ctx, std::move(RelInfo), GetOpInfo,
342  SymbolLookUp, DisInfo);
343 }
344 
345 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAArch64Disassembler() {
346  TargetRegistry::RegisterMCDisassembler(getTheAArch64leTarget(),
347  createAArch64Disassembler);
348  TargetRegistry::RegisterMCDisassembler(getTheAArch64beTarget(),
349  createAArch64Disassembler);
350  TargetRegistry::RegisterMCSymbolizer(getTheAArch64leTarget(),
351  createAArch64ExternalSymbolizer);
352  TargetRegistry::RegisterMCSymbolizer(getTheAArch64beTarget(),
353  createAArch64ExternalSymbolizer);
354  TargetRegistry::RegisterMCDisassembler(getTheAArch64_32Target(),
355  createAArch64Disassembler);
356  TargetRegistry::RegisterMCSymbolizer(getTheAArch64_32Target(),
357  createAArch64ExternalSymbolizer);
358 
359  TargetRegistry::RegisterMCDisassembler(getTheARM64Target(),
360  createAArch64Disassembler);
361  TargetRegistry::RegisterMCSymbolizer(getTheARM64Target(),
362  createAArch64ExternalSymbolizer);
363  TargetRegistry::RegisterMCDisassembler(getTheARM64_32Target(),
364  createAArch64Disassembler);
365  TargetRegistry::RegisterMCSymbolizer(getTheARM64_32Target(),
366  createAArch64ExternalSymbolizer);
367 }
368 
369 static const unsigned FPR128DecoderTable[] = {
370  AArch64::Q0, AArch64::Q1, AArch64::Q2, AArch64::Q3, AArch64::Q4,
371  AArch64::Q5, AArch64::Q6, AArch64::Q7, AArch64::Q8, AArch64::Q9,
372  AArch64::Q10, AArch64::Q11, AArch64::Q12, AArch64::Q13, AArch64::Q14,
373  AArch64::Q15, AArch64::Q16, AArch64::Q17, AArch64::Q18, AArch64::Q19,
374  AArch64::Q20, AArch64::Q21, AArch64::Q22, AArch64::Q23, AArch64::Q24,
375  AArch64::Q25, AArch64::Q26, AArch64::Q27, AArch64::Q28, AArch64::Q29,
376  AArch64::Q30, AArch64::Q31
377 };
378 
379 static DecodeStatus DecodeFPR128RegisterClass(MCInst &Inst, unsigned RegNo,
380  uint64_t Addr,
381  const void *Decoder) {
382  if (RegNo > 31)
383  return Fail;
384 
385  unsigned Register = FPR128DecoderTable[RegNo];
386  Inst.addOperand(MCOperand::createReg(Register));
387  return Success;
388 }
389 
390 static DecodeStatus DecodeFPR128_loRegisterClass(MCInst &Inst, unsigned RegNo,
391  uint64_t Addr,
392  const void *Decoder) {
393  if (RegNo > 15)
394  return Fail;
395  return DecodeFPR128RegisterClass(Inst, RegNo, Addr, Decoder);
396 }
397 
398 static const unsigned FPR64DecoderTable[] = {
399  AArch64::D0, AArch64::D1, AArch64::D2, AArch64::D3, AArch64::D4,
400  AArch64::D5, AArch64::D6, AArch64::D7, AArch64::D8, AArch64::D9,
401  AArch64::D10, AArch64::D11, AArch64::D12, AArch64::D13, AArch64::D14,
402  AArch64::D15, AArch64::D16, AArch64::D17, AArch64::D18, AArch64::D19,
403  AArch64::D20, AArch64::D21, AArch64::D22, AArch64::D23, AArch64::D24,
404  AArch64::D25, AArch64::D26, AArch64::D27, AArch64::D28, AArch64::D29,
405  AArch64::D30, AArch64::D31
406 };
407 
408 static DecodeStatus DecodeFPR64RegisterClass(MCInst &Inst, unsigned RegNo,
409  uint64_t Addr,
410  const void *Decoder) {
411  if (RegNo > 31)
412  return Fail;
413 
414  unsigned Register = FPR64DecoderTable[RegNo];
415  Inst.addOperand(MCOperand::createReg(Register));
416  return Success;
417 }
418 
419 static const unsigned FPR32DecoderTable[] = {
420  AArch64::S0, AArch64::S1, AArch64::S2, AArch64::S3, AArch64::S4,
421  AArch64::S5, AArch64::S6, AArch64::S7, AArch64::S8, AArch64::S9,
422  AArch64::S10, AArch64::S11, AArch64::S12, AArch64::S13, AArch64::S14,
423  AArch64::S15, AArch64::S16, AArch64::S17, AArch64::S18, AArch64::S19,
424  AArch64::S20, AArch64::S21, AArch64::S22, AArch64::S23, AArch64::S24,
425  AArch64::S25, AArch64::S26, AArch64::S27, AArch64::S28, AArch64::S29,
426  AArch64::S30, AArch64::S31
427 };
428 
429 static DecodeStatus DecodeFPR32RegisterClass(MCInst &Inst, unsigned RegNo,
430  uint64_t Addr,
431  const void *Decoder) {
432  if (RegNo > 31)
433  return Fail;
434 
435  unsigned Register = FPR32DecoderTable[RegNo];
436  Inst.addOperand(MCOperand::createReg(Register));
437  return Success;
438 }
439 
440 static const unsigned FPR16DecoderTable[] = {
441  AArch64::H0, AArch64::H1, AArch64::H2, AArch64::H3, AArch64::H4,
442  AArch64::H5, AArch64::H6, AArch64::H7, AArch64::H8, AArch64::H9,
443  AArch64::H10, AArch64::H11, AArch64::H12, AArch64::H13, AArch64::H14,
444  AArch64::H15, AArch64::H16, AArch64::H17, AArch64::H18, AArch64::H19,
445  AArch64::H20, AArch64::H21, AArch64::H22, AArch64::H23, AArch64::H24,
446  AArch64::H25, AArch64::H26, AArch64::H27, AArch64::H28, AArch64::H29,
447  AArch64::H30, AArch64::H31
448 };
449 
450 static DecodeStatus DecodeFPR16RegisterClass(MCInst &Inst, unsigned RegNo,
451  uint64_t Addr,
452  const void *Decoder) {
453  if (RegNo > 31)
454  return Fail;
455 
456  unsigned Register = FPR16DecoderTable[RegNo];
457  Inst.addOperand(MCOperand::createReg(Register));
458  return Success;
459 }
460 
461 static const unsigned FPR8DecoderTable[] = {
462  AArch64::B0, AArch64::B1, AArch64::B2, AArch64::B3, AArch64::B4,
463  AArch64::B5, AArch64::B6, AArch64::B7, AArch64::B8, AArch64::B9,
464  AArch64::B10, AArch64::B11, AArch64::B12, AArch64::B13, AArch64::B14,
465  AArch64::B15, AArch64::B16, AArch64::B17, AArch64::B18, AArch64::B19,
466  AArch64::B20, AArch64::B21, AArch64::B22, AArch64::B23, AArch64::B24,
467  AArch64::B25, AArch64::B26, AArch64::B27, AArch64::B28, AArch64::B29,
468  AArch64::B30, AArch64::B31
469 };
470 
471 static DecodeStatus DecodeFPR8RegisterClass(MCInst &Inst, unsigned RegNo,
472  uint64_t Addr,
473  const void *Decoder) {
474  if (RegNo > 31)
475  return Fail;
476 
477  unsigned Register = FPR8DecoderTable[RegNo];
478  Inst.addOperand(MCOperand::createReg(Register));
479  return Success;
480 }
481 
482 static const unsigned GPR64DecoderTable[] = {
483  AArch64::X0, AArch64::X1, AArch64::X2, AArch64::X3, AArch64::X4,
484  AArch64::X5, AArch64::X6, AArch64::X7, AArch64::X8, AArch64::X9,
485  AArch64::X10, AArch64::X11, AArch64::X12, AArch64::X13, AArch64::X14,
486  AArch64::X15, AArch64::X16, AArch64::X17, AArch64::X18, AArch64::X19,
487  AArch64::X20, AArch64::X21, AArch64::X22, AArch64::X23, AArch64::X24,
488  AArch64::X25, AArch64::X26, AArch64::X27, AArch64::X28, AArch64::FP,
489  AArch64::LR, AArch64::XZR
490 };
491 
492 static DecodeStatus DecodeGPR64commonRegisterClass(MCInst &Inst, unsigned RegNo,
493  uint64_t Addr,
494  const void *Decoder) {
495  if (RegNo > 30)
496  return Fail;
497 
498  unsigned Register = GPR64DecoderTable[RegNo];
499  Inst.addOperand(MCOperand::createReg(Register));
500  return Success;
501 }
502 
503 static DecodeStatus DecodeGPR64RegisterClass(MCInst &Inst, unsigned RegNo,
504  uint64_t Addr,
505  const void *Decoder) {
506  if (RegNo > 31)
507  return Fail;
508 
509  unsigned Register = GPR64DecoderTable[RegNo];
510  Inst.addOperand(MCOperand::createReg(Register));
511  return Success;
512 }
513 
514 static const unsigned GPR64x8DecoderTable[] = {
515  AArch64::X0_X1_X2_X3_X4_X5_X6_X7,
516  AArch64::X2_X3_X4_X5_X6_X7_X8_X9,
517  AArch64::X4_X5_X6_X7_X8_X9_X10_X11,
518  AArch64::X6_X7_X8_X9_X10_X11_X12_X13,
519  AArch64::X8_X9_X10_X11_X12_X13_X14_X15,
520  AArch64::X10_X11_X12_X13_X14_X15_X16_X17,
521  AArch64::X12_X13_X14_X15_X16_X17_X18_X19,
522  AArch64::X14_X15_X16_X17_X18_X19_X20_X21,
523  AArch64::X16_X17_X18_X19_X20_X21_X22_X23,
524  AArch64::X18_X19_X20_X21_X22_X23_X24_X25,
525  AArch64::X20_X21_X22_X23_X24_X25_X26_X27,
526  AArch64::X22_X23_X24_X25_X26_X27_X28_FP,
527 };
528 
529 static DecodeStatus DecodeGPR64x8ClassRegisterClass(MCInst &Inst,
530  unsigned RegNo,
531  uint64_t Address,
532  const void *Decoder) {
533  if (RegNo > 22)
534  return Fail;
535  if (RegNo & 1)
536  return Fail;
537 
538  unsigned Register = GPR64x8DecoderTable[RegNo >> 1];
539  Inst.addOperand(MCOperand::createReg(Register));
540  return Success;
541 }
542 
543 static DecodeStatus DecodeGPR64spRegisterClass(MCInst &Inst, unsigned RegNo,
544  uint64_t Addr,
545  const void *Decoder) {
546  if (RegNo > 31)
547  return Fail;
548  unsigned Register = GPR64DecoderTable[RegNo];
549  if (Register == AArch64::XZR)
550  Register = AArch64::SP;
551  Inst.addOperand(MCOperand::createReg(Register));
552  return Success;
553 }
554 
555 static const unsigned MatrixIndexGPR32_12_15DecoderTable[] = {
556  AArch64::W12, AArch64::W13, AArch64::W14, AArch64::W15
557 };
558 
559 static DecodeStatus DecodeMatrixIndexGPR32_12_15RegisterClass(MCInst &Inst,
560  unsigned RegNo,
561  uint64_t Addr,
562  const void *Decoder) {
563  if (RegNo > 3)
564  return Fail;
565 
566  unsigned Register = MatrixIndexGPR32_12_15DecoderTable[RegNo];
567  Inst.addOperand(MCOperand::createReg(Register));
568  return Success;
569 }
570 
571 static const unsigned GPR32DecoderTable[] = {
572  AArch64::W0, AArch64::W1, AArch64::W2, AArch64::W3, AArch64::W4,
573  AArch64::W5, AArch64::W6, AArch64::W7, AArch64::W8, AArch64::W9,
574  AArch64::W10, AArch64::W11, AArch64::W12, AArch64::W13, AArch64::W14,
575  AArch64::W15, AArch64::W16, AArch64::W17, AArch64::W18, AArch64::W19,
576  AArch64::W20, AArch64::W21, AArch64::W22, AArch64::W23, AArch64::W24,
577  AArch64::W25, AArch64::W26, AArch64::W27, AArch64::W28, AArch64::W29,
578  AArch64::W30, AArch64::WZR
579 };
580 
581 static DecodeStatus DecodeGPR32RegisterClass(MCInst &Inst, unsigned RegNo,
582  uint64_t Addr,
583  const void *Decoder) {
584  if (RegNo > 31)
585  return Fail;
586 
587  unsigned Register = GPR32DecoderTable[RegNo];
588  Inst.addOperand(MCOperand::createReg(Register));
589  return Success;
590 }
591 
592 static DecodeStatus DecodeGPR32spRegisterClass(MCInst &Inst, unsigned RegNo,
593  uint64_t Addr,
594  const void *Decoder) {
595  if (RegNo > 31)
596  return Fail;
597 
598  unsigned Register = GPR32DecoderTable[RegNo];
599  if (Register == AArch64::WZR)
600  Register = AArch64::WSP;
601  Inst.addOperand(MCOperand::createReg(Register));
602  return Success;
603 }
604 static const unsigned ZPRDecoderTable[] = {
605  AArch64::Z0, AArch64::Z1, AArch64::Z2, AArch64::Z3,
606  AArch64::Z4, AArch64::Z5, AArch64::Z6, AArch64::Z7,
607  AArch64::Z8, AArch64::Z9, AArch64::Z10, AArch64::Z11,
608  AArch64::Z12, AArch64::Z13, AArch64::Z14, AArch64::Z15,
609  AArch64::Z16, AArch64::Z17, AArch64::Z18, AArch64::Z19,
610  AArch64::Z20, AArch64::Z21, AArch64::Z22, AArch64::Z23,
611  AArch64::Z24, AArch64::Z25, AArch64::Z26, AArch64::Z27,
612  AArch64::Z28, AArch64::Z29, AArch64::Z30, AArch64::Z31
613 };
614 
615 static DecodeStatus DecodeZPRRegisterClass(MCInst &Inst, unsigned RegNo,
616  uint64_t Address,
617  const void* Decoder) {
618  if (RegNo > 31)
619  return Fail;
620 
621  unsigned Register = ZPRDecoderTable[RegNo];
622  Inst.addOperand(MCOperand::createReg(Register));
623  return Success;
624 }
625 
626 static DecodeStatus DecodeZPR_4bRegisterClass(MCInst &Inst, unsigned RegNo,
627  uint64_t Address,
628  const void *Decoder) {
629  if (RegNo > 15)
630  return Fail;
631  return DecodeZPRRegisterClass(Inst, RegNo, Address, Decoder);
632 }
633 
634 static DecodeStatus DecodeZPR_3bRegisterClass(MCInst &Inst, unsigned RegNo,
635  uint64_t Address,
636  const void *Decoder) {
637  if (RegNo > 7)
638  return Fail;
639  return DecodeZPRRegisterClass(Inst, RegNo, Address, Decoder);
640 }
641 
642 static const unsigned ZZDecoderTable[] = {
643  AArch64::Z0_Z1, AArch64::Z1_Z2, AArch64::Z2_Z3, AArch64::Z3_Z4,
644  AArch64::Z4_Z5, AArch64::Z5_Z6, AArch64::Z6_Z7, AArch64::Z7_Z8,
645  AArch64::Z8_Z9, AArch64::Z9_Z10, AArch64::Z10_Z11, AArch64::Z11_Z12,
646  AArch64::Z12_Z13, AArch64::Z13_Z14, AArch64::Z14_Z15, AArch64::Z15_Z16,
647  AArch64::Z16_Z17, AArch64::Z17_Z18, AArch64::Z18_Z19, AArch64::Z19_Z20,
648  AArch64::Z20_Z21, AArch64::Z21_Z22, AArch64::Z22_Z23, AArch64::Z23_Z24,
649  AArch64::Z24_Z25, AArch64::Z25_Z26, AArch64::Z26_Z27, AArch64::Z27_Z28,
650  AArch64::Z28_Z29, AArch64::Z29_Z30, AArch64::Z30_Z31, AArch64::Z31_Z0
651 };
652 
653 static DecodeStatus DecodeZPR2RegisterClass(MCInst &Inst, unsigned RegNo,
654  uint64_t Address,
655  const void* Decoder) {
656  if (RegNo > 31)
657  return Fail;
658  unsigned Register = ZZDecoderTable[RegNo];
659  Inst.addOperand(MCOperand::createReg(Register));
660  return Success;
661 }
662 
663 static const unsigned ZZZDecoderTable[] = {
664  AArch64::Z0_Z1_Z2, AArch64::Z1_Z2_Z3, AArch64::Z2_Z3_Z4,
665  AArch64::Z3_Z4_Z5, AArch64::Z4_Z5_Z6, AArch64::Z5_Z6_Z7,
666  AArch64::Z6_Z7_Z8, AArch64::Z7_Z8_Z9, AArch64::Z8_Z9_Z10,
667  AArch64::Z9_Z10_Z11, AArch64::Z10_Z11_Z12, AArch64::Z11_Z12_Z13,
668  AArch64::Z12_Z13_Z14, AArch64::Z13_Z14_Z15, AArch64::Z14_Z15_Z16,
669  AArch64::Z15_Z16_Z17, AArch64::Z16_Z17_Z18, AArch64::Z17_Z18_Z19,
670  AArch64::Z18_Z19_Z20, AArch64::Z19_Z20_Z21, AArch64::Z20_Z21_Z22,
671  AArch64::Z21_Z22_Z23, AArch64::Z22_Z23_Z24, AArch64::Z23_Z24_Z25,
672  AArch64::Z24_Z25_Z26, AArch64::Z25_Z26_Z27, AArch64::Z26_Z27_Z28,
673  AArch64::Z27_Z28_Z29, AArch64::Z28_Z29_Z30, AArch64::Z29_Z30_Z31,
674  AArch64::Z30_Z31_Z0, AArch64::Z31_Z0_Z1
675 };
676 
677 static DecodeStatus DecodeZPR3RegisterClass(MCInst &Inst, unsigned RegNo,
678  uint64_t Address,
679  const void* Decoder) {
680  if (RegNo > 31)
681  return Fail;
682  unsigned Register = ZZZDecoderTable[RegNo];
683  Inst.addOperand(MCOperand::createReg(Register));
684  return Success;
685 }
686 
687 static const unsigned ZZZZDecoderTable[] = {
688  AArch64::Z0_Z1_Z2_Z3, AArch64::Z1_Z2_Z3_Z4, AArch64::Z2_Z3_Z4_Z5,
689  AArch64::Z3_Z4_Z5_Z6, AArch64::Z4_Z5_Z6_Z7, AArch64::Z5_Z6_Z7_Z8,
690  AArch64::Z6_Z7_Z8_Z9, AArch64::Z7_Z8_Z9_Z10, AArch64::Z8_Z9_Z10_Z11,
691  AArch64::Z9_Z10_Z11_Z12, AArch64::Z10_Z11_Z12_Z13, AArch64::Z11_Z12_Z13_Z14,
692  AArch64::Z12_Z13_Z14_Z15, AArch64::Z13_Z14_Z15_Z16, AArch64::Z14_Z15_Z16_Z17,
693  AArch64::Z15_Z16_Z17_Z18, AArch64::Z16_Z17_Z18_Z19, AArch64::Z17_Z18_Z19_Z20,
694  AArch64::Z18_Z19_Z20_Z21, AArch64::Z19_Z20_Z21_Z22, AArch64::Z20_Z21_Z22_Z23,
695  AArch64::Z21_Z22_Z23_Z24, AArch64::Z22_Z23_Z24_Z25, AArch64::Z23_Z24_Z25_Z26,
696  AArch64::Z24_Z25_Z26_Z27, AArch64::Z25_Z26_Z27_Z28, AArch64::Z26_Z27_Z28_Z29,
697  AArch64::Z27_Z28_Z29_Z30, AArch64::Z28_Z29_Z30_Z31, AArch64::Z29_Z30_Z31_Z0,
698  AArch64::Z30_Z31_Z0_Z1, AArch64::Z31_Z0_Z1_Z2
699 };
700 
701 static DecodeStatus DecodeZPR4RegisterClass(MCInst &Inst, unsigned RegNo,
702  uint64_t Address,
703  const void* Decoder) {
704  if (RegNo > 31)
705  return Fail;
706  unsigned Register = ZZZZDecoderTable[RegNo];
707  Inst.addOperand(MCOperand::createReg(Register));
708  return Success;
709 }
710 
711 static DecodeStatus DecodeMatrixTileListRegisterClass(MCInst &Inst,
712  unsigned RegMask,
713  uint64_t Address,
714  const void *Decoder) {
715  if (RegMask > 0xFF)
716  return Fail;
717  Inst.addOperand(MCOperand::createImm(RegMask));
718  return Success;
719 }
720 
721 static const SmallVector<SmallVector<unsigned, 16>, 5>
722  MatrixZATileDecoderTable = {
723  {AArch64::ZAB0},
724  {AArch64::ZAH0, AArch64::ZAH1},
725  {AArch64::ZAS0, AArch64::ZAS1, AArch64::ZAS2, AArch64::ZAS3},
726  {AArch64::ZAD0, AArch64::ZAD1, AArch64::ZAD2, AArch64::ZAD3,
727  AArch64::ZAD4, AArch64::ZAD5, AArch64::ZAD6, AArch64::ZAD7},
728  {AArch64::ZAQ0, AArch64::ZAQ1, AArch64::ZAQ2, AArch64::ZAQ3,
729  AArch64::ZAQ4, AArch64::ZAQ5, AArch64::ZAQ6, AArch64::ZAQ7,
730  AArch64::ZAQ8, AArch64::ZAQ9, AArch64::ZAQ10, AArch64::ZAQ11,
731  AArch64::ZAQ12, AArch64::ZAQ13, AArch64::ZAQ14, AArch64::ZAQ15}};
732 
733 template <unsigned NumBitsForTile>
734 static DecodeStatus DecodeMatrixTile(MCInst &Inst, unsigned RegNo,
735  uint64_t Address, const void *Decoder) {
736  unsigned LastReg = (1 << NumBitsForTile) - 1;
737  if (RegNo > LastReg)
738  return Fail;
739  Inst.addOperand(
740  MCOperand::createReg(MatrixZATileDecoderTable[NumBitsForTile][RegNo]));
741  return Success;
742 }
743 
744 static const unsigned PPRDecoderTable[] = {
745  AArch64::P0, AArch64::P1, AArch64::P2, AArch64::P3,
746  AArch64::P4, AArch64::P5, AArch64::P6, AArch64::P7,
747  AArch64::P8, AArch64::P9, AArch64::P10, AArch64::P11,
748  AArch64::P12, AArch64::P13, AArch64::P14, AArch64::P15
749 };
750 
751 static DecodeStatus DecodePPRRegisterClass(MCInst &Inst, unsigned RegNo,
752  uint64_t Addr, const void *Decoder) {
753  if (RegNo > 15)
754  return Fail;
755 
756  unsigned Register = PPRDecoderTable[RegNo];
757  Inst.addOperand(MCOperand::createReg(Register));
758  return Success;
759 }
760 
761 static DecodeStatus DecodePPR_3bRegisterClass(MCInst &Inst, unsigned RegNo,
762  uint64_t Addr,
763  const void* Decoder) {
764  if (RegNo > 7)
765  return Fail;
766 
767  // Just reuse the PPR decode table
768  return DecodePPRRegisterClass(Inst, RegNo, Addr, Decoder);
769 }
770 
771 static const unsigned VectorDecoderTable[] = {
772  AArch64::Q0, AArch64::Q1, AArch64::Q2, AArch64::Q3, AArch64::Q4,
773  AArch64::Q5, AArch64::Q6, AArch64::Q7, AArch64::Q8, AArch64::Q9,
774  AArch64::Q10, AArch64::Q11, AArch64::Q12, AArch64::Q13, AArch64::Q14,
775  AArch64::Q15, AArch64::Q16, AArch64::Q17, AArch64::Q18, AArch64::Q19,
776  AArch64::Q20, AArch64::Q21, AArch64::Q22, AArch64::Q23, AArch64::Q24,
777  AArch64::Q25, AArch64::Q26, AArch64::Q27, AArch64::Q28, AArch64::Q29,
778  AArch64::Q30, AArch64::Q31
779 };
780 
781 static DecodeStatus DecodeVectorRegisterClass(MCInst &Inst, unsigned RegNo,
782  uint64_t Addr,
783  const void *Decoder) {
784  if (RegNo > 31)
785  return Fail;
786 
787  unsigned Register = VectorDecoderTable[RegNo];
788  Inst.addOperand(MCOperand::createReg(Register));
789  return Success;
790 }
791 
792 static const unsigned QQDecoderTable[] = {
793  AArch64::Q0_Q1, AArch64::Q1_Q2, AArch64::Q2_Q3, AArch64::Q3_Q4,
794  AArch64::Q4_Q5, AArch64::Q5_Q6, AArch64::Q6_Q7, AArch64::Q7_Q8,
795  AArch64::Q8_Q9, AArch64::Q9_Q10, AArch64::Q10_Q11, AArch64::Q11_Q12,
796  AArch64::Q12_Q13, AArch64::Q13_Q14, AArch64::Q14_Q15, AArch64::Q15_Q16,
797  AArch64::Q16_Q17, AArch64::Q17_Q18, AArch64::Q18_Q19, AArch64::Q19_Q20,
798  AArch64::Q20_Q21, AArch64::Q21_Q22, AArch64::Q22_Q23, AArch64::Q23_Q24,
799  AArch64::Q24_Q25, AArch64::Q25_Q26, AArch64::Q26_Q27, AArch64::Q27_Q28,
800  AArch64::Q28_Q29, AArch64::Q29_Q30, AArch64::Q30_Q31, AArch64::Q31_Q0
801 };
802 
803 static DecodeStatus DecodeQQRegisterClass(MCInst &Inst, unsigned RegNo,
804  uint64_t Addr, const void *Decoder) {
805  if (RegNo > 31)
806  return Fail;
807  unsigned Register = QQDecoderTable[RegNo];
808  Inst.addOperand(MCOperand::createReg(Register));
809  return Success;
810 }
811 
812 static const unsigned QQQDecoderTable[] = {
813  AArch64::Q0_Q1_Q2, AArch64::Q1_Q2_Q3, AArch64::Q2_Q3_Q4,
814  AArch64::Q3_Q4_Q5, AArch64::Q4_Q5_Q6, AArch64::Q5_Q6_Q7,
815  AArch64::Q6_Q7_Q8, AArch64::Q7_Q8_Q9, AArch64::Q8_Q9_Q10,
816  AArch64::Q9_Q10_Q11, AArch64::Q10_Q11_Q12, AArch64::Q11_Q12_Q13,
817  AArch64::Q12_Q13_Q14, AArch64::Q13_Q14_Q15, AArch64::Q14_Q15_Q16,
818  AArch64::Q15_Q16_Q17, AArch64::Q16_Q17_Q18, AArch64::Q17_Q18_Q19,
819  AArch64::Q18_Q19_Q20, AArch64::Q19_Q20_Q21, AArch64::Q20_Q21_Q22,
820  AArch64::Q21_Q22_Q23, AArch64::Q22_Q23_Q24, AArch64::Q23_Q24_Q25,
821  AArch64::Q24_Q25_Q26, AArch64::Q25_Q26_Q27, AArch64::Q26_Q27_Q28,
822  AArch64::Q27_Q28_Q29, AArch64::Q28_Q29_Q30, AArch64::Q29_Q30_Q31,
823  AArch64::Q30_Q31_Q0, AArch64::Q31_Q0_Q1
824 };
825 
826 static DecodeStatus DecodeQQQRegisterClass(MCInst &Inst, unsigned RegNo,
827  uint64_t Addr, const void *Decoder) {
828  if (RegNo > 31)
829  return Fail;
830  unsigned Register = QQQDecoderTable[RegNo];
831  Inst.addOperand(MCOperand::createReg(Register));
832  return Success;
833 }
834 
835 static const unsigned QQQQDecoderTable[] = {
836  AArch64::Q0_Q1_Q2_Q3, AArch64::Q1_Q2_Q3_Q4, AArch64::Q2_Q3_Q4_Q5,
837  AArch64::Q3_Q4_Q5_Q6, AArch64::Q4_Q5_Q6_Q7, AArch64::Q5_Q6_Q7_Q8,
838  AArch64::Q6_Q7_Q8_Q9, AArch64::Q7_Q8_Q9_Q10, AArch64::Q8_Q9_Q10_Q11,
839  AArch64::Q9_Q10_Q11_Q12, AArch64::Q10_Q11_Q12_Q13, AArch64::Q11_Q12_Q13_Q14,
840  AArch64::Q12_Q13_Q14_Q15, AArch64::Q13_Q14_Q15_Q16, AArch64::Q14_Q15_Q16_Q17,
841  AArch64::Q15_Q16_Q17_Q18, AArch64::Q16_Q17_Q18_Q19, AArch64::Q17_Q18_Q19_Q20,
842  AArch64::Q18_Q19_Q20_Q21, AArch64::Q19_Q20_Q21_Q22, AArch64::Q20_Q21_Q22_Q23,
843  AArch64::Q21_Q22_Q23_Q24, AArch64::Q22_Q23_Q24_Q25, AArch64::Q23_Q24_Q25_Q26,
844  AArch64::Q24_Q25_Q26_Q27, AArch64::Q25_Q26_Q27_Q28, AArch64::Q26_Q27_Q28_Q29,
845  AArch64::Q27_Q28_Q29_Q30, AArch64::Q28_Q29_Q30_Q31, AArch64::Q29_Q30_Q31_Q0,
846  AArch64::Q30_Q31_Q0_Q1, AArch64::Q31_Q0_Q1_Q2
847 };
848 
849 static DecodeStatus DecodeQQQQRegisterClass(MCInst &Inst, unsigned RegNo,
850  uint64_t Addr,
851  const void *Decoder) {
852  if (RegNo > 31)
853  return Fail;
854  unsigned Register = QQQQDecoderTable[RegNo];
855  Inst.addOperand(MCOperand::createReg(Register));
856  return Success;
857 }
858 
859 static const unsigned DDDecoderTable[] = {
860  AArch64::D0_D1, AArch64::D1_D2, AArch64::D2_D3, AArch64::D3_D4,
861  AArch64::D4_D5, AArch64::D5_D6, AArch64::D6_D7, AArch64::D7_D8,
862  AArch64::D8_D9, AArch64::D9_D10, AArch64::D10_D11, AArch64::D11_D12,
863  AArch64::D12_D13, AArch64::D13_D14, AArch64::D14_D15, AArch64::D15_D16,
864  AArch64::D16_D17, AArch64::D17_D18, AArch64::D18_D19, AArch64::D19_D20,
865  AArch64::D20_D21, AArch64::D21_D22, AArch64::D22_D23, AArch64::D23_D24,
866  AArch64::D24_D25, AArch64::D25_D26, AArch64::D26_D27, AArch64::D27_D28,
867  AArch64::D28_D29, AArch64::D29_D30, AArch64::D30_D31, AArch64::D31_D0
868 };
869 
870 static DecodeStatus DecodeDDRegisterClass(MCInst &Inst, unsigned RegNo,
871  uint64_t Addr, const void *Decoder) {
872  if (RegNo > 31)
873  return Fail;
874  unsigned Register = DDDecoderTable[RegNo];
875  Inst.addOperand(MCOperand::createReg(Register));
876  return Success;
877 }
878 
879 static const unsigned DDDDecoderTable[] = {
880  AArch64::D0_D1_D2, AArch64::D1_D2_D3, AArch64::D2_D3_D4,
881  AArch64::D3_D4_D5, AArch64::D4_D5_D6, AArch64::D5_D6_D7,
882  AArch64::D6_D7_D8, AArch64::D7_D8_D9, AArch64::D8_D9_D10,
883  AArch64::D9_D10_D11, AArch64::D10_D11_D12, AArch64::D11_D12_D13,
884  AArch64::D12_D13_D14, AArch64::D13_D14_D15, AArch64::D14_D15_D16,
885  AArch64::D15_D16_D17, AArch64::D16_D17_D18, AArch64::D17_D18_D19,
886  AArch64::D18_D19_D20, AArch64::D19_D20_D21, AArch64::D20_D21_D22,
887  AArch64::D21_D22_D23, AArch64::D22_D23_D24, AArch64::D23_D24_D25,
888  AArch64::D24_D25_D26, AArch64::D25_D26_D27, AArch64::D26_D27_D28,
889  AArch64::D27_D28_D29, AArch64::D28_D29_D30, AArch64::D29_D30_D31,
890  AArch64::D30_D31_D0, AArch64::D31_D0_D1
891 };
892 
893 static DecodeStatus DecodeDDDRegisterClass(MCInst &Inst, unsigned RegNo,
894  uint64_t Addr, const void *Decoder) {
895  if (RegNo > 31)
896  return Fail;
897  unsigned Register = DDDDecoderTable[RegNo];
898  Inst.addOperand(MCOperand::createReg(Register));
899  return Success;
900 }
901 
902 static const unsigned DDDDDecoderTable[] = {
903  AArch64::D0_D1_D2_D3, AArch64::D1_D2_D3_D4, AArch64::D2_D3_D4_D5,
904  AArch64::D3_D4_D5_D6, AArch64::D4_D5_D6_D7, AArch64::D5_D6_D7_D8,
905  AArch64::D6_D7_D8_D9, AArch64::D7_D8_D9_D10, AArch64::D8_D9_D10_D11,
906  AArch64::D9_D10_D11_D12, AArch64::D10_D11_D12_D13, AArch64::D11_D12_D13_D14,
907  AArch64::D12_D13_D14_D15, AArch64::D13_D14_D15_D16, AArch64::D14_D15_D16_D17,
908  AArch64::D15_D16_D17_D18, AArch64::D16_D17_D18_D19, AArch64::D17_D18_D19_D20,
909  AArch64::D18_D19_D20_D21, AArch64::D19_D20_D21_D22, AArch64::D20_D21_D22_D23,
910  AArch64::D21_D22_D23_D24, AArch64::D22_D23_D24_D25, AArch64::D23_D24_D25_D26,
911  AArch64::D24_D25_D26_D27, AArch64::D25_D26_D27_D28, AArch64::D26_D27_D28_D29,
912  AArch64::D27_D28_D29_D30, AArch64::D28_D29_D30_D31, AArch64::D29_D30_D31_D0,
913  AArch64::D30_D31_D0_D1, AArch64::D31_D0_D1_D2
914 };
915 
916 static DecodeStatus DecodeDDDDRegisterClass(MCInst &Inst, unsigned RegNo,
917  uint64_t Addr,
918  const void *Decoder) {
919  if (RegNo > 31)
920  return Fail;
921  unsigned Register = DDDDDecoderTable[RegNo];
922  Inst.addOperand(MCOperand::createReg(Register));
923  return Success;
924 }
925 
926 static DecodeStatus DecodeFixedPointScaleImm32(MCInst &Inst, unsigned Imm,
927  uint64_t Addr,
928  const void *Decoder) {
929  // scale{5} is asserted as 1 in tblgen.
930  Imm |= 0x20;
931  Inst.addOperand(MCOperand::createImm(64 - Imm));
932  return Success;
933 }
934 
935 static DecodeStatus DecodeFixedPointScaleImm64(MCInst &Inst, unsigned Imm,
936  uint64_t Addr,
937  const void *Decoder) {
938  Inst.addOperand(MCOperand::createImm(64 - Imm));
939  return Success;
940 }
941 
942 static DecodeStatus DecodePCRelLabel19(MCInst &Inst, unsigned Imm,
943  uint64_t Addr, const void *Decoder) {
944  int64_t ImmVal = Imm;
945  const AArch64Disassembler *Dis =
946  static_cast<const AArch64Disassembler *>(Decoder);
947 
948  // Sign-extend 19-bit immediate.
949  if (ImmVal & (1 << (19 - 1)))
950  ImmVal |= ~((1LL << 19) - 1);
951 
952  if (!Dis->tryAddingSymbolicOperand(Inst, ImmVal * 4, Addr,
953  Inst.getOpcode() != AArch64::LDRXl, 0, 4))
954  Inst.addOperand(MCOperand::createImm(ImmVal));
955  return Success;
956 }
957 
958 static DecodeStatus DecodeMemExtend(MCInst &Inst, unsigned Imm,
959  uint64_t Address, const void *Decoder) {
960  Inst.addOperand(MCOperand::createImm((Imm >> 1) & 1));
961  Inst.addOperand(MCOperand::createImm(Imm & 1));
962  return Success;
963 }
964 
965 static DecodeStatus DecodeMRSSystemRegister(MCInst &Inst, unsigned Imm,
966  uint64_t Address,
967  const void *Decoder) {
968  Inst.addOperand(MCOperand::createImm(Imm));
969 
970  // Every system register in the encoding space is valid with the syntax
971  // S<op0>_<op1>_<Cn>_<Cm>_<op2>, so decoding system registers always succeeds.
972  return Success;
973 }
974 
975 static DecodeStatus DecodeMSRSystemRegister(MCInst &Inst, unsigned Imm,
976  uint64_t Address,
977  const void *Decoder) {
978  Inst.addOperand(MCOperand::createImm(Imm));
979 
980  return Success;
981 }
982 
983 static DecodeStatus DecodeFMOVLaneInstruction(MCInst &Inst, unsigned Insn,
984  uint64_t Address,
985  const void *Decoder) {
986  // This decoder exists to add the dummy Lane operand to the MCInst, which must
987  // be 1 in assembly but has no other real manifestation.
988  unsigned Rd = fieldFromInstruction(Insn, 0, 5);
989  unsigned Rn = fieldFromInstruction(Insn, 5, 5);
990  unsigned IsToVec = fieldFromInstruction(Insn, 16, 1);
991 
992  if (IsToVec) {
993  DecodeFPR128RegisterClass(Inst, Rd, Address, Decoder);
994  DecodeGPR64RegisterClass(Inst, Rn, Address, Decoder);
995  } else {
996  DecodeGPR64RegisterClass(Inst, Rd, Address, Decoder);
997  DecodeFPR128RegisterClass(Inst, Rn, Address, Decoder);
998  }
999 
1000  // Add the lane
1001  Inst.addOperand(MCOperand::createImm(1));
1002 
1003  return Success;
1004 }
1005 
1006 static DecodeStatus DecodeVecShiftRImm(MCInst &Inst, unsigned Imm,
1007  unsigned Add) {
1008  Inst.addOperand(MCOperand::createImm(Add - Imm));
1009  return Success;
1010 }
1011 
1012 static DecodeStatus DecodeVecShiftLImm(MCInst &Inst, unsigned Imm,
1013  unsigned Add) {
1014  Inst.addOperand(MCOperand::createImm((Imm + Add) & (Add - 1)));
1015  return Success;
1016 }
1017 
1018 static DecodeStatus DecodeVecShiftR64Imm(MCInst &Inst, unsigned Imm,
1019  uint64_t Addr, const void *Decoder) {
1020  return DecodeVecShiftRImm(Inst, Imm, 64);
1021 }
1022 
1023 static DecodeStatus DecodeVecShiftR64ImmNarrow(MCInst &Inst, unsigned Imm,
1024  uint64_t Addr,
1025  const void *Decoder) {
1026  return DecodeVecShiftRImm(Inst, Imm | 0x20, 64);
1027 }
1028 
1029 static DecodeStatus DecodeVecShiftR32Imm(MCInst &Inst, unsigned Imm,
1030  uint64_t Addr, const void *Decoder) {
1031  return DecodeVecShiftRImm(Inst, Imm, 32);
1032 }
1033 
1034 static DecodeStatus DecodeVecShiftR32ImmNarrow(MCInst &Inst, unsigned Imm,
1035  uint64_t Addr,
1036  const void *Decoder) {
1037  return DecodeVecShiftRImm(Inst, Imm | 0x10, 32);
1038 }
1039 
1040 static DecodeStatus DecodeVecShiftR16Imm(MCInst &Inst, unsigned Imm,
1041  uint64_t Addr, const void *Decoder) {
1042  return DecodeVecShiftRImm(Inst, Imm, 16);
1043 }
1044 
1045 static DecodeStatus DecodeVecShiftR16ImmNarrow(MCInst &Inst, unsigned Imm,
1046  uint64_t Addr,
1047  const void *Decoder) {
1048  return DecodeVecShiftRImm(Inst, Imm | 0x8, 16);
1049 }
1050 
1051 static DecodeStatus DecodeVecShiftR8Imm(MCInst &Inst, unsigned Imm,
1052  uint64_t Addr, const void *Decoder) {
1053  return DecodeVecShiftRImm(Inst, Imm, 8);
1054 }
1055 
1056 static DecodeStatus DecodeVecShiftL64Imm(MCInst &Inst, unsigned Imm,
1057  uint64_t Addr, const void *Decoder) {
1058  return DecodeVecShiftLImm(Inst, Imm, 64);
1059 }
1060 
1061 static DecodeStatus DecodeVecShiftL32Imm(MCInst &Inst, unsigned Imm,
1062  uint64_t Addr, const void *Decoder) {
1063  return DecodeVecShiftLImm(Inst, Imm, 32);
1064 }
1065 
1066 static DecodeStatus DecodeVecShiftL16Imm(MCInst &Inst, unsigned Imm,
1067  uint64_t Addr, const void *Decoder) {
1068  return DecodeVecShiftLImm(Inst, Imm, 16);
1069 }
1070 
1071 static DecodeStatus DecodeVecShiftL8Imm(MCInst &Inst, unsigned Imm,
1072  uint64_t Addr, const void *Decoder) {
1073  return DecodeVecShiftLImm(Inst, Imm, 8);
1074 }
1075 
1076 static DecodeStatus DecodeThreeAddrSRegInstruction(MCInst &Inst, uint32_t insn,
1077  uint64_t Addr,
1078  const void *Decoder) {
1079  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1080  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1081  unsigned Rm = fieldFromInstruction(insn, 16, 5);
1082  unsigned shiftHi = fieldFromInstruction(insn, 22, 2);
1083  unsigned shiftLo = fieldFromInstruction(insn, 10, 6);
1084  unsigned shift = (shiftHi << 6) | shiftLo;
1085  switch (Inst.getOpcode()) {
1086  default:
1087  return Fail;
1088  case AArch64::ADDWrs:
1089  case AArch64::ADDSWrs:
1090  case AArch64::SUBWrs:
1091  case AArch64::SUBSWrs:
1092  // if shift == '11' then ReservedValue()
1093  if (shiftHi == 0x3)
1094  return Fail;
1095  LLVM_FALLTHROUGH;
1096  case AArch64::ANDWrs:
1097  case AArch64::ANDSWrs:
1098  case AArch64::BICWrs:
1099  case AArch64::BICSWrs:
1100  case AArch64::ORRWrs:
1101  case AArch64::ORNWrs:
1102  case AArch64::EORWrs:
1103  case AArch64::EONWrs: {
1104  // if sf == '0' and imm6<5> == '1' then ReservedValue()
1105  if (shiftLo >> 5 == 1)
1106  return Fail;
1107  DecodeGPR32RegisterClass(Inst, Rd, Addr, Decoder);
1108  DecodeGPR32RegisterClass(Inst, Rn, Addr, Decoder);
1109  DecodeGPR32RegisterClass(Inst, Rm, Addr, Decoder);
1110  break;
1111  }
1112  case AArch64::ADDXrs:
1113  case AArch64::ADDSXrs:
1114  case AArch64::SUBXrs:
1115  case AArch64::SUBSXrs:
1116  // if shift == '11' then ReservedValue()
1117  if (shiftHi == 0x3)
1118  return Fail;
1119  LLVM_FALLTHROUGH;
1120  case AArch64::ANDXrs:
1121  case AArch64::ANDSXrs:
1122  case AArch64::BICXrs:
1123  case AArch64::BICSXrs:
1124  case AArch64::ORRXrs:
1125  case AArch64::ORNXrs:
1126  case AArch64::EORXrs:
1127  case AArch64::EONXrs:
1128  DecodeGPR64RegisterClass(Inst, Rd, Addr, Decoder);
1129  DecodeGPR64RegisterClass(Inst, Rn, Addr, Decoder);
1130  DecodeGPR64RegisterClass(Inst, Rm, Addr, Decoder);
1131  break;
1132  }
1133 
1134  Inst.addOperand(MCOperand::createImm(shift));
1135  return Success;
1136 }
1137 
1138 static DecodeStatus DecodeMoveImmInstruction(MCInst &Inst, uint32_t insn,
1139  uint64_t Addr,
1140  const void *Decoder) {
1141  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1142  unsigned imm = fieldFromInstruction(insn, 5, 16);
1143  unsigned shift = fieldFromInstruction(insn, 21, 2);
1144  shift <<= 4;
1145  switch (Inst.getOpcode()) {
1146  default:
1147  return Fail;
1148  case AArch64::MOVZWi:
1149  case AArch64::MOVNWi:
1150  case AArch64::MOVKWi:
1151  if (shift & (1U << 5))
1152  return Fail;
1153  DecodeGPR32RegisterClass(Inst, Rd, Addr, Decoder);
1154  break;
1155  case AArch64::MOVZXi:
1156  case AArch64::MOVNXi:
1157  case AArch64::MOVKXi:
1158  DecodeGPR64RegisterClass(Inst, Rd, Addr, Decoder);
1159  break;
1160  }
1161 
1162  if (Inst.getOpcode() == AArch64::MOVKWi ||
1163  Inst.getOpcode() == AArch64::MOVKXi)
1164  Inst.addOperand(Inst.getOperand(0));
1165 
1166  Inst.addOperand(MCOperand::createImm(imm));
1167  Inst.addOperand(MCOperand::createImm(shift));
1168  return Success;
1169 }
1170 
1171 static DecodeStatus DecodeUnsignedLdStInstruction(MCInst &Inst, uint32_t insn,
1172  uint64_t Addr,
1173  const void *Decoder) {
1174  unsigned Rt = fieldFromInstruction(insn, 0, 5);
1175  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1176  unsigned offset = fieldFromInstruction(insn, 10, 12);
1177  const AArch64Disassembler *Dis =
1178  static_cast<const AArch64Disassembler *>(Decoder);
1179 
1180  switch (Inst.getOpcode()) {
1181  default:
1182  return Fail;
1183  case AArch64::PRFMui:
1184  // Rt is an immediate in prefetch.
1185  Inst.addOperand(MCOperand::createImm(Rt));
1186  break;
1187  case AArch64::STRBBui:
1188  case AArch64::LDRBBui:
1189  case AArch64::LDRSBWui:
1190  case AArch64::STRHHui:
1191  case AArch64::LDRHHui:
1192  case AArch64::LDRSHWui:
1193  case AArch64::STRWui:
1194  case AArch64::LDRWui:
1195  DecodeGPR32RegisterClass(Inst, Rt, Addr, Decoder);
1196  break;
1197  case AArch64::LDRSBXui:
1198  case AArch64::LDRSHXui:
1199  case AArch64::LDRSWui:
1200  case AArch64::STRXui:
1201  case AArch64::LDRXui:
1202  DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder);
1203  break;
1204  case AArch64::LDRQui:
1205  case AArch64::STRQui:
1206  DecodeFPR128RegisterClass(Inst, Rt, Addr, Decoder);
1207  break;
1208  case AArch64::LDRDui:
1209  case AArch64::STRDui:
1210  DecodeFPR64RegisterClass(Inst, Rt, Addr, Decoder);
1211  break;
1212  case AArch64::LDRSui:
1213  case AArch64::STRSui:
1214  DecodeFPR32RegisterClass(Inst, Rt, Addr, Decoder);
1215  break;
1216  case AArch64::LDRHui:
1217  case AArch64::STRHui:
1218  DecodeFPR16RegisterClass(Inst, Rt, Addr, Decoder);
1219  break;
1220  case AArch64::LDRBui:
1221  case AArch64::STRBui:
1222  DecodeFPR8RegisterClass(Inst, Rt, Addr, Decoder);
1223  break;
1224  }
1225 
1226  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1227  if (!Dis->tryAddingSymbolicOperand(Inst, offset, Addr, Fail, 0, 4))
1228  Inst.addOperand(MCOperand::createImm(offset));
1229  return Success;
1230 }
1231 
1232 static DecodeStatus DecodeSignedLdStInstruction(MCInst &Inst, uint32_t insn,
1233  uint64_t Addr,
1234  const void *Decoder) {
1235  unsigned Rt = fieldFromInstruction(insn, 0, 5);
1236  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1237  int64_t offset = fieldFromInstruction(insn, 12, 9);
1238 
1239  // offset is a 9-bit signed immediate, so sign extend it to
1240  // fill the unsigned.
1241  if (offset & (1 << (9 - 1)))
1242  offset |= ~((1LL << 9) - 1);
1243 
1244  // First operand is always the writeback to the address register, if needed.
1245  switch (Inst.getOpcode()) {
1246  default:
1247  break;
1248  case AArch64::LDRSBWpre:
1249  case AArch64::LDRSHWpre:
1250  case AArch64::STRBBpre:
1251  case AArch64::LDRBBpre:
1252  case AArch64::STRHHpre:
1253  case AArch64::LDRHHpre:
1254  case AArch64::STRWpre:
1255  case AArch64::LDRWpre:
1256  case AArch64::LDRSBWpost:
1257  case AArch64::LDRSHWpost:
1258  case AArch64::STRBBpost:
1259  case AArch64::LDRBBpost:
1260  case AArch64::STRHHpost:
1261  case AArch64::LDRHHpost:
1262  case AArch64::STRWpost:
1263  case AArch64::LDRWpost:
1264  case AArch64::LDRSBXpre:
1265  case AArch64::LDRSHXpre:
1266  case AArch64::STRXpre:
1267  case AArch64::LDRSWpre:
1268  case AArch64::LDRXpre:
1269  case AArch64::LDRSBXpost:
1270  case AArch64::LDRSHXpost:
1271  case AArch64::STRXpost:
1272  case AArch64::LDRSWpost:
1273  case AArch64::LDRXpost:
1274  case AArch64::LDRQpre:
1275  case AArch64::STRQpre:
1276  case AArch64::LDRQpost:
1277  case AArch64::STRQpost:
1278  case AArch64::LDRDpre:
1279  case AArch64::STRDpre:
1280  case AArch64::LDRDpost:
1281  case AArch64::STRDpost:
1282  case AArch64::LDRSpre:
1283  case AArch64::STRSpre:
1284  case AArch64::LDRSpost:
1285  case AArch64::STRSpost:
1286  case AArch64::LDRHpre:
1287  case AArch64::STRHpre:
1288  case AArch64::LDRHpost:
1289  case AArch64::STRHpost:
1290  case AArch64::LDRBpre:
1291  case AArch64::STRBpre:
1292  case AArch64::LDRBpost:
1293  case AArch64::STRBpost:
1294  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1295  break;
1296  }
1297 
1298  switch (Inst.getOpcode()) {
1299  default:
1300  return Fail;
1301  case AArch64::PRFUMi:
1302  // Rt is an immediate in prefetch.
1303  Inst.addOperand(MCOperand::createImm(Rt));
1304  break;
1305  case AArch64::STURBBi:
1306  case AArch64::LDURBBi:
1307  case AArch64::LDURSBWi:
1308  case AArch64::STURHHi:
1309  case AArch64::LDURHHi:
1310  case AArch64::LDURSHWi:
1311  case AArch64::STURWi:
1312  case AArch64::LDURWi:
1313  case AArch64::LDTRSBWi:
1314  case AArch64::LDTRSHWi:
1315  case AArch64::STTRWi:
1316  case AArch64::LDTRWi:
1317  case AArch64::STTRHi:
1318  case AArch64::LDTRHi:
1319  case AArch64::LDTRBi:
1320  case AArch64::STTRBi:
1321  case AArch64::LDRSBWpre:
1322  case AArch64::LDRSHWpre:
1323  case AArch64::STRBBpre:
1324  case AArch64::LDRBBpre:
1325  case AArch64::STRHHpre:
1326  case AArch64::LDRHHpre:
1327  case AArch64::STRWpre:
1328  case AArch64::LDRWpre:
1329  case AArch64::LDRSBWpost:
1330  case AArch64::LDRSHWpost:
1331  case AArch64::STRBBpost:
1332  case AArch64::LDRBBpost:
1333  case AArch64::STRHHpost:
1334  case AArch64::LDRHHpost:
1335  case AArch64::STRWpost:
1336  case AArch64::LDRWpost:
1337  case AArch64::STLURBi:
1338  case AArch64::STLURHi:
1339  case AArch64::STLURWi:
1340  case AArch64::LDAPURBi:
1341  case AArch64::LDAPURSBWi:
1342  case AArch64::LDAPURHi:
1343  case AArch64::LDAPURSHWi:
1344  case AArch64::LDAPURi:
1345  DecodeGPR32RegisterClass(Inst, Rt, Addr, Decoder);
1346  break;
1347  case AArch64::LDURSBXi:
1348  case AArch64::LDURSHXi:
1349  case AArch64::LDURSWi:
1350  case AArch64::STURXi:
1351  case AArch64::LDURXi:
1352  case AArch64::LDTRSBXi:
1353  case AArch64::LDTRSHXi:
1354  case AArch64::LDTRSWi:
1355  case AArch64::STTRXi:
1356  case AArch64::LDTRXi:
1357  case AArch64::LDRSBXpre:
1358  case AArch64::LDRSHXpre:
1359  case AArch64::STRXpre:
1360  case AArch64::LDRSWpre:
1361  case AArch64::LDRXpre:
1362  case AArch64::LDRSBXpost:
1363  case AArch64::LDRSHXpost:
1364  case AArch64::STRXpost:
1365  case AArch64::LDRSWpost:
1366  case AArch64::LDRXpost:
1367  case AArch64::LDAPURSWi:
1368  case AArch64::LDAPURSHXi:
1369  case AArch64::LDAPURSBXi:
1370  case AArch64::STLURXi:
1371  case AArch64::LDAPURXi:
1372  DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder);
1373  break;
1374  case AArch64::LDURQi:
1375  case AArch64::STURQi:
1376  case AArch64::LDRQpre:
1377  case AArch64::STRQpre:
1378  case AArch64::LDRQpost:
1379  case AArch64::STRQpost:
1380  DecodeFPR128RegisterClass(Inst, Rt, Addr, Decoder);
1381  break;
1382  case AArch64::LDURDi:
1383  case AArch64::STURDi:
1384  case AArch64::LDRDpre:
1385  case AArch64::STRDpre:
1386  case AArch64::LDRDpost:
1387  case AArch64::STRDpost:
1388  DecodeFPR64RegisterClass(Inst, Rt, Addr, Decoder);
1389  break;
1390  case AArch64::LDURSi:
1391  case AArch64::STURSi:
1392  case AArch64::LDRSpre:
1393  case AArch64::STRSpre:
1394  case AArch64::LDRSpost:
1395  case AArch64::STRSpost:
1396  DecodeFPR32RegisterClass(Inst, Rt, Addr, Decoder);
1397  break;
1398  case AArch64::LDURHi:
1399  case AArch64::STURHi:
1400  case AArch64::LDRHpre:
1401  case AArch64::STRHpre:
1402  case AArch64::LDRHpost:
1403  case AArch64::STRHpost:
1404  DecodeFPR16RegisterClass(Inst, Rt, Addr, Decoder);
1405  break;
1406  case AArch64::LDURBi:
1407  case AArch64::STURBi:
1408  case AArch64::LDRBpre:
1409  case AArch64::STRBpre:
1410  case AArch64::LDRBpost:
1411  case AArch64::STRBpost:
1412  DecodeFPR8RegisterClass(Inst, Rt, Addr, Decoder);
1413  break;
1414  }
1415 
1416  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1417  Inst.addOperand(MCOperand::createImm(offset));
1418 
1419  bool IsLoad = fieldFromInstruction(insn, 22, 1);
1420  bool IsIndexed = fieldFromInstruction(insn, 10, 2) != 0;
1421  bool IsFP = fieldFromInstruction(insn, 26, 1);
1422 
1423  // Cannot write back to a transfer register (but xzr != sp).
1424  if (IsLoad && IsIndexed && !IsFP && Rn != 31 && Rt == Rn)
1425  return SoftFail;
1426 
1427  return Success;
1428 }
1429 
1430 static DecodeStatus DecodeExclusiveLdStInstruction(MCInst &Inst, uint32_t insn,
1431  uint64_t Addr,
1432  const void *Decoder) {
1433  unsigned Rt = fieldFromInstruction(insn, 0, 5);
1434  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1435  unsigned Rt2 = fieldFromInstruction(insn, 10, 5);
1436  unsigned Rs = fieldFromInstruction(insn, 16, 5);
1437 
1438  unsigned Opcode = Inst.getOpcode();
1439  switch (Opcode) {
1440  default:
1441  return Fail;
1442  case AArch64::STLXRW:
1443  case AArch64::STLXRB:
1444  case AArch64::STLXRH:
1445  case AArch64::STXRW:
1446  case AArch64::STXRB:
1447  case AArch64::STXRH:
1448  DecodeGPR32RegisterClass(Inst, Rs, Addr, Decoder);
1449  LLVM_FALLTHROUGH;
1450  case AArch64::LDARW:
1451  case AArch64::LDARB:
1452  case AArch64::LDARH:
1453  case AArch64::LDAXRW:
1454  case AArch64::LDAXRB:
1455  case AArch64::LDAXRH:
1456  case AArch64::LDXRW:
1457  case AArch64::LDXRB:
1458  case AArch64::LDXRH:
1459  case AArch64::STLRW:
1460  case AArch64::STLRB:
1461  case AArch64::STLRH:
1462  case AArch64::STLLRW:
1463  case AArch64::STLLRB:
1464  case AArch64::STLLRH:
1465  case AArch64::LDLARW:
1466  case AArch64::LDLARB:
1467  case AArch64::LDLARH:
1468  DecodeGPR32RegisterClass(Inst, Rt, Addr, Decoder);
1469  break;
1470  case AArch64::STLXRX:
1471  case AArch64::STXRX:
1472  DecodeGPR32RegisterClass(Inst, Rs, Addr, Decoder);
1473  LLVM_FALLTHROUGH;
1474  case AArch64::LDARX:
1475  case AArch64::LDAXRX:
1476  case AArch64::LDXRX:
1477  case AArch64::STLRX:
1478  case AArch64::LDLARX:
1479  case AArch64::STLLRX:
1480  DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder);
1481  break;
1482  case AArch64::STLXPW:
1483  case AArch64::STXPW:
1484  DecodeGPR32RegisterClass(Inst, Rs, Addr, Decoder);
1485  LLVM_FALLTHROUGH;
1486  case AArch64::LDAXPW:
1487  case AArch64::LDXPW:
1488  DecodeGPR32RegisterClass(Inst, Rt, Addr, Decoder);
1489  DecodeGPR32RegisterClass(Inst, Rt2, Addr, Decoder);
1490  break;
1491  case AArch64::STLXPX:
1492  case AArch64::STXPX:
1493  DecodeGPR32RegisterClass(Inst, Rs, Addr, Decoder);
1494  LLVM_FALLTHROUGH;
1495  case AArch64::LDAXPX:
1496  case AArch64::LDXPX:
1497  DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder);
1498  DecodeGPR64RegisterClass(Inst, Rt2, Addr, Decoder);
1499  break;
1500  }
1501 
1502  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1503 
1504  // You shouldn't load to the same register twice in an instruction...
1505  if ((Opcode == AArch64::LDAXPW || Opcode == AArch64::LDXPW ||
1506  Opcode == AArch64::LDAXPX || Opcode == AArch64::LDXPX) &&
1507  Rt == Rt2)
1508  return SoftFail;
1509 
1510  return Success;
1511 }
1512 
1513 static DecodeStatus DecodePairLdStInstruction(MCInst &Inst, uint32_t insn,
1514  uint64_t Addr,
1515  const void *Decoder) {
1516  unsigned Rt = fieldFromInstruction(insn, 0, 5);
1517  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1518  unsigned Rt2 = fieldFromInstruction(insn, 10, 5);
1519  int64_t offset = fieldFromInstruction(insn, 15, 7);
1520  bool IsLoad = fieldFromInstruction(insn, 22, 1);
1521 
1522  // offset is a 7-bit signed immediate, so sign extend it to
1523  // fill the unsigned.
1524  if (offset & (1 << (7 - 1)))
1525  offset |= ~((1LL << 7) - 1);
1526 
1527  unsigned Opcode = Inst.getOpcode();
1528  bool NeedsDisjointWritebackTransfer = false;
1529 
1530  // First operand is always writeback of base register.
1531  switch (Opcode) {
1532  default:
1533  break;
1534  case AArch64::LDPXpost:
1535  case AArch64::STPXpost:
1536  case AArch64::LDPSWpost:
1537  case AArch64::LDPXpre:
1538  case AArch64::STPXpre:
1539  case AArch64::LDPSWpre:
1540  case AArch64::LDPWpost:
1541  case AArch64::STPWpost:
1542  case AArch64::LDPWpre:
1543  case AArch64::STPWpre:
1544  case AArch64::LDPQpost:
1545  case AArch64::STPQpost:
1546  case AArch64::LDPQpre:
1547  case AArch64::STPQpre:
1548  case AArch64::LDPDpost:
1549  case AArch64::STPDpost:
1550  case AArch64::LDPDpre:
1551  case AArch64::STPDpre:
1552  case AArch64::LDPSpost:
1553  case AArch64::STPSpost:
1554  case AArch64::LDPSpre:
1555  case AArch64::STPSpre:
1556  case AArch64::STGPpre:
1557  case AArch64::STGPpost:
1558  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1559  break;
1560  }
1561 
1562  switch (Opcode) {
1563  default:
1564  return Fail;
1565  case AArch64::LDPXpost:
1566  case AArch64::STPXpost:
1567  case AArch64::LDPSWpost:
1568  case AArch64::LDPXpre:
1569  case AArch64::STPXpre:
1570  case AArch64::LDPSWpre:
1571  case AArch64::STGPpre:
1572  case AArch64::STGPpost:
1573  NeedsDisjointWritebackTransfer = true;
1574  LLVM_FALLTHROUGH;
1575  case AArch64::LDNPXi:
1576  case AArch64::STNPXi:
1577  case AArch64::LDPXi:
1578  case AArch64::STPXi:
1579  case AArch64::LDPSWi:
1580  case AArch64::STGPi:
1581  DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder);
1582  DecodeGPR64RegisterClass(Inst, Rt2, Addr, Decoder);
1583  break;
1584  case AArch64::LDPWpost:
1585  case AArch64::STPWpost:
1586  case AArch64::LDPWpre:
1587  case AArch64::STPWpre:
1588  NeedsDisjointWritebackTransfer = true;
1589  LLVM_FALLTHROUGH;
1590  case AArch64::LDNPWi:
1591  case AArch64::STNPWi:
1592  case AArch64::LDPWi:
1593  case AArch64::STPWi:
1594  DecodeGPR32RegisterClass(Inst, Rt, Addr, Decoder);
1595  DecodeGPR32RegisterClass(Inst, Rt2, Addr, Decoder);
1596  break;
1597  case AArch64::LDNPQi:
1598  case AArch64::STNPQi:
1599  case AArch64::LDPQpost:
1600  case AArch64::STPQpost:
1601  case AArch64::LDPQi:
1602  case AArch64::STPQi:
1603  case AArch64::LDPQpre:
1604  case AArch64::STPQpre:
1605  DecodeFPR128RegisterClass(Inst, Rt, Addr, Decoder);
1606  DecodeFPR128RegisterClass(Inst, Rt2, Addr, Decoder);
1607  break;
1608  case AArch64::LDNPDi:
1609  case AArch64::STNPDi:
1610  case AArch64::LDPDpost:
1611  case AArch64::STPDpost:
1612  case AArch64::LDPDi:
1613  case AArch64::STPDi:
1614  case AArch64::LDPDpre:
1615  case AArch64::STPDpre:
1616  DecodeFPR64RegisterClass(Inst, Rt, Addr, Decoder);
1617  DecodeFPR64RegisterClass(Inst, Rt2, Addr, Decoder);
1618  break;
1619  case AArch64::LDNPSi:
1620  case AArch64::STNPSi:
1621  case AArch64::LDPSpost:
1622  case AArch64::STPSpost:
1623  case AArch64::LDPSi:
1624  case AArch64::STPSi:
1625  case AArch64::LDPSpre:
1626  case AArch64::STPSpre:
1627  DecodeFPR32RegisterClass(Inst, Rt, Addr, Decoder);
1628  DecodeFPR32RegisterClass(Inst, Rt2, Addr, Decoder);
1629  break;
1630  }
1631 
1632  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1633  Inst.addOperand(MCOperand::createImm(offset));
1634 
1635  // You shouldn't load to the same register twice in an instruction...
1636  if (IsLoad && Rt == Rt2)
1637  return SoftFail;
1638 
1639  // ... or do any operation that writes-back to a transfer register. But note
1640  // that "stp xzr, xzr, [sp], #4" is fine because xzr and sp are different.
1641  if (NeedsDisjointWritebackTransfer && Rn != 31 && (Rt == Rn || Rt2 == Rn))
1642  return SoftFail;
1643 
1644  return Success;
1645 }
1646 
1647 static DecodeStatus DecodeAuthLoadInstruction(MCInst &Inst, uint32_t insn,
1648  uint64_t Addr,
1649  const void *Decoder) {
1650  unsigned Rt = fieldFromInstruction(insn, 0, 5);
1651  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1652  uint64_t offset = fieldFromInstruction(insn, 22, 1) << 9 |
1653  fieldFromInstruction(insn, 12, 9);
1654  unsigned writeback = fieldFromInstruction(insn, 11, 1);
1655 
1656  switch (Inst.getOpcode()) {
1657  default:
1658  return Fail;
1659  case AArch64::LDRAAwriteback:
1660  case AArch64::LDRABwriteback:
1661  DecodeGPR64spRegisterClass(Inst, Rn /* writeback register */, Addr,
1662  Decoder);
1663  break;
1664  case AArch64::LDRAAindexed:
1665  case AArch64::LDRABindexed:
1666  break;
1667  }
1668 
1669  DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder);
1670  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1671  DecodeSImm<10>(Inst, offset, Addr, Decoder);
1672 
1673  if (writeback && Rt == Rn && Rn != 31) {
1674  return SoftFail;
1675  }
1676 
1677  return Success;
1678 }
1679 
1680 static DecodeStatus DecodeAddSubERegInstruction(MCInst &Inst, uint32_t insn,
1681  uint64_t Addr,
1682  const void *Decoder) {
1683  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1684  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1685  unsigned Rm = fieldFromInstruction(insn, 16, 5);
1686  unsigned extend = fieldFromInstruction(insn, 10, 6);
1687 
1688  unsigned shift = extend & 0x7;
1689  if (shift > 4)
1690  return Fail;
1691 
1692  switch (Inst.getOpcode()) {
1693  default:
1694  return Fail;
1695  case AArch64::ADDWrx:
1696  case AArch64::SUBWrx:
1697  DecodeGPR32spRegisterClass(Inst, Rd, Addr, Decoder);
1698  DecodeGPR32spRegisterClass(Inst, Rn, Addr, Decoder);
1699  DecodeGPR32RegisterClass(Inst, Rm, Addr, Decoder);
1700  break;
1701  case AArch64::ADDSWrx:
1702  case AArch64::SUBSWrx:
1703  DecodeGPR32RegisterClass(Inst, Rd, Addr, Decoder);
1704  DecodeGPR32spRegisterClass(Inst, Rn, Addr, Decoder);
1705  DecodeGPR32RegisterClass(Inst, Rm, Addr, Decoder);
1706  break;
1707  case AArch64::ADDXrx:
1708  case AArch64::SUBXrx:
1709  DecodeGPR64spRegisterClass(Inst, Rd, Addr, Decoder);
1710  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1711  DecodeGPR32RegisterClass(Inst, Rm, Addr, Decoder);
1712  break;
1713  case AArch64::ADDSXrx:
1714  case AArch64::SUBSXrx:
1715  DecodeGPR64RegisterClass(Inst, Rd, Addr, Decoder);
1716  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1717  DecodeGPR32RegisterClass(Inst, Rm, Addr, Decoder);
1718  break;
1719  case AArch64::ADDXrx64:
1720  case AArch64::SUBXrx64:
1721  DecodeGPR64spRegisterClass(Inst, Rd, Addr, Decoder);
1722  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1723  DecodeGPR64RegisterClass(Inst, Rm, Addr, Decoder);
1724  break;
1725  case AArch64::SUBSXrx64:
1726  case AArch64::ADDSXrx64:
1727  DecodeGPR64RegisterClass(Inst, Rd, Addr, Decoder);
1728  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1729  DecodeGPR64RegisterClass(Inst, Rm, Addr, Decoder);
1730  break;
1731  }
1732 
1733  Inst.addOperand(MCOperand::createImm(extend));
1734  return Success;
1735 }
1736 
1737 static DecodeStatus DecodeLogicalImmInstruction(MCInst &Inst, uint32_t insn,
1738  uint64_t Addr,
1739  const void *Decoder) {
1740  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1741  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1742  unsigned Datasize = fieldFromInstruction(insn, 31, 1);
1743  unsigned imm;
1744 
1745  if (Datasize) {
1746  if (Inst.getOpcode() == AArch64::ANDSXri)
1747  DecodeGPR64RegisterClass(Inst, Rd, Addr, Decoder);
1748  else
1749  DecodeGPR64spRegisterClass(Inst, Rd, Addr, Decoder);
1750  DecodeGPR64RegisterClass(Inst, Rn, Addr, Decoder);
1751  imm = fieldFromInstruction(insn, 10, 13);
1752  if (!AArch64_AM::isValidDecodeLogicalImmediate(imm, 64))
1753  return Fail;
1754  } else {
1755  if (Inst.getOpcode() == AArch64::ANDSWri)
1756  DecodeGPR32RegisterClass(Inst, Rd, Addr, Decoder);
1757  else
1758  DecodeGPR32spRegisterClass(Inst, Rd, Addr, Decoder);
1759  DecodeGPR32RegisterClass(Inst, Rn, Addr, Decoder);
1760  imm = fieldFromInstruction(insn, 10, 12);
1761  if (!AArch64_AM::isValidDecodeLogicalImmediate(imm, 32))
1762  return Fail;
1763  }
1764  Inst.addOperand(MCOperand::createImm(imm));
1765  return Success;
1766 }
1767 
1768 static DecodeStatus DecodeModImmInstruction(MCInst &Inst, uint32_t insn,
1769  uint64_t Addr,
1770  const void *Decoder) {
1771  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1772  unsigned cmode = fieldFromInstruction(insn, 12, 4);
1773  unsigned imm = fieldFromInstruction(insn, 16, 3) << 5;
1774  imm |= fieldFromInstruction(insn, 5, 5);
1775 
1776  if (Inst.getOpcode() == AArch64::MOVID)
1777  DecodeFPR64RegisterClass(Inst, Rd, Addr, Decoder);
1778  else
1779  DecodeVectorRegisterClass(Inst, Rd, Addr, Decoder);
1780 
1781  Inst.addOperand(MCOperand::createImm(imm));
1782 
1783  switch (Inst.getOpcode()) {
1784  default:
1785  break;
1786  case AArch64::MOVIv4i16:
1787  case AArch64::MOVIv8i16:
1788  case AArch64::MVNIv4i16:
1789  case AArch64::MVNIv8i16:
1790  case AArch64::MOVIv2i32:
1791  case AArch64::MOVIv4i32:
1792  case AArch64::MVNIv2i32:
1793  case AArch64::MVNIv4i32:
1794  Inst.addOperand(MCOperand::createImm((cmode & 6) << 2));
1795  break;
1796  case AArch64::MOVIv2s_msl:
1797  case AArch64::MOVIv4s_msl:
1798  case AArch64::MVNIv2s_msl:
1799  case AArch64::MVNIv4s_msl:
1800  Inst.addOperand(MCOperand::createImm((cmode & 1) ? 0x110 : 0x108));
1801  break;
1802  }
1803 
1804  return Success;
1805 }
1806 
1807 static DecodeStatus DecodeModImmTiedInstruction(MCInst &Inst, uint32_t insn,
1808  uint64_t Addr,
1809  const void *Decoder) {
1810  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1811  unsigned cmode = fieldFromInstruction(insn, 12, 4);
1812  unsigned imm = fieldFromInstruction(insn, 16, 3) << 5;
1813  imm |= fieldFromInstruction(insn, 5, 5);
1814 
1815  // Tied operands added twice.
1816  DecodeVectorRegisterClass(Inst, Rd, Addr, Decoder);
1817  DecodeVectorRegisterClass(Inst, Rd, Addr, Decoder);
1818 
1819  Inst.addOperand(MCOperand::createImm(imm));
1820  Inst.addOperand(MCOperand::createImm((cmode & 6) << 2));
1821 
1822  return Success;
1823 }
1824 
1825 static DecodeStatus DecodeAdrInstruction(MCInst &Inst, uint32_t insn,
1826  uint64_t Addr, const void *Decoder) {
1827  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1828  int64_t imm = fieldFromInstruction(insn, 5, 19) << 2;
1829  imm |= fieldFromInstruction(insn, 29, 2);
1830  const AArch64Disassembler *Dis =
1831  static_cast<const AArch64Disassembler *>(Decoder);
1832 
1833  // Sign-extend the 21-bit immediate.
1834  if (imm & (1 << (21 - 1)))
1835  imm |= ~((1LL << 21) - 1);
1836 
1837  DecodeGPR64RegisterClass(Inst, Rd, Addr, Decoder);
1838  if (!Dis->tryAddingSymbolicOperand(Inst, imm, Addr, Fail, 0, 4))
1839  Inst.addOperand(MCOperand::createImm(imm));
1840 
1841  return Success;
1842 }
1843 
1844 static DecodeStatus DecodeAddSubImmShift(MCInst &Inst, uint32_t insn,
1845  uint64_t Addr, const void *Decoder) {
1846  unsigned Rd = fieldFromInstruction(insn, 0, 5);
1847  unsigned Rn = fieldFromInstruction(insn, 5, 5);
1848  unsigned Imm = fieldFromInstruction(insn, 10, 14);
1849  unsigned S = fieldFromInstruction(insn, 29, 1);
1850  unsigned Datasize = fieldFromInstruction(insn, 31, 1);
1851 
1852  unsigned ShifterVal = (Imm >> 12) & 3;
1853  unsigned ImmVal = Imm & 0xFFF;
1854  const AArch64Disassembler *Dis =
1855  static_cast<const AArch64Disassembler *>(Decoder);
1856 
1857  if (ShifterVal != 0 && ShifterVal != 1)
1858  return Fail;
1859 
1860  if (Datasize) {
1861  if (Rd == 31 && !S)
1862  DecodeGPR64spRegisterClass(Inst, Rd, Addr, Decoder);
1863  else
1864  DecodeGPR64RegisterClass(Inst, Rd, Addr, Decoder);
1865  DecodeGPR64spRegisterClass(Inst, Rn, Addr, Decoder);
1866  } else {
1867  if (Rd == 31 && !S)
1868  DecodeGPR32spRegisterClass(Inst, Rd, Addr, Decoder);
1869  else
1870  DecodeGPR32RegisterClass(Inst, Rd, Addr, Decoder);
1871  DecodeGPR32spRegisterClass(Inst, Rn, Addr, Decoder);
1872  }
1873 
1874  if (!Dis->tryAddingSymbolicOperand(Inst, Imm, Addr, Fail, 0, 4))
1875  Inst.addOperand(MCOperand::createImm(ImmVal));
1876  Inst.addOperand(MCOperand::createImm(12 * ShifterVal));
1877  return Success;
1878 }
1879 
1880 static DecodeStatus DecodeUnconditionalBranch(MCInst &Inst, uint32_t insn,
1881  uint64_t Addr,
1882  const void *Decoder) {
1883  int64_t imm = fieldFromInstruction(insn, 0, 26);
1884  const AArch64Disassembler *Dis =
1885  static_cast<const AArch64Disassembler *>(Decoder);
1886 
1887  // Sign-extend the 26-bit immediate.
1888  if (imm & (1 << (26 - 1)))
1889  imm |= ~((1LL << 26) - 1);
1890 
1891  if (!Dis->tryAddingSymbolicOperand(Inst, imm * 4, Addr, true, 0, 4))
1892  Inst.addOperand(MCOperand::createImm(imm));
1893 
1894  return Success;
1895 }
1896 
1897 static DecodeStatus DecodeSystemPStateInstruction(MCInst &Inst, uint32_t insn,
1898  uint64_t Addr,
1899  const void *Decoder) {
1900  uint64_t op1 = fieldFromInstruction(insn, 16, 3);
1901  uint64_t op2 = fieldFromInstruction(insn, 5, 3);
1902  uint64_t crm = fieldFromInstruction(insn, 8, 4);
1903  uint64_t pstate_field = (op1 << 3) | op2;
1904 
1905  switch (pstate_field) {
1906  case 0x01: // XAFlag
1907  case 0x02: // AXFlag
1908  return Fail;
1909  }
1910 
1911  if ((pstate_field == AArch64PState::PAN ||
1912  pstate_field == AArch64PState::UAO ||
1913  pstate_field == AArch64PState::SSBS) && crm > 1)
1914  return Fail;
1915 
1916  Inst.addOperand(MCOperand::createImm(pstate_field));
1917  Inst.addOperand(MCOperand::createImm(crm));
1918 
1919  const AArch64Disassembler *Dis =
1920  static_cast<const AArch64Disassembler *>(Decoder);
1921  auto PState = AArch64PState::lookupPStateByEncoding(pstate_field);
1922  if (PState && PState->haveFeatures(Dis->getSubtargetInfo().getFeatureBits()))
1923  return Success;
1924  return Fail;
1925 }
1926 
1927 static DecodeStatus DecodeTestAndBranch(MCInst &Inst, uint32_t insn,
1928  uint64_t Addr, const void *Decoder) {
1929  uint64_t Rt = fieldFromInstruction(insn, 0, 5);
1930  uint64_t bit = fieldFromInstruction(insn, 31, 1) << 5;
1931  bit |= fieldFromInstruction(insn, 19, 5);
1932  int64_t dst = fieldFromInstruction(insn, 5, 14);
1933  const AArch64Disassembler *Dis =
1934  static_cast<const AArch64Disassembler *>(Decoder);
1935 
1936  // Sign-extend 14-bit immediate.
1937  if (dst & (1 << (14 - 1)))
1938  dst |= ~((1LL << 14) - 1);
1939 
1940  if (fieldFromInstruction(insn, 31, 1) == 0)
1941  DecodeGPR32RegisterClass(Inst, Rt, Addr, Decoder);
1942  else
1943  DecodeGPR64RegisterClass(Inst, Rt, Addr, Decoder);
1944  Inst.addOperand(MCOperand::createImm(bit));
1945  if (!Dis->tryAddingSymbolicOperand(Inst, dst * 4, Addr, true, 0, 4))
1946  Inst.addOperand(MCOperand::createImm(dst));
1947 
1948  return Success;
1949 }
1950 
1951 static DecodeStatus DecodeGPRSeqPairsClassRegisterClass(MCInst &Inst,
1952  unsigned RegClassID,
1953  unsigned RegNo,
1954  uint64_t Addr,
1955  const void *Decoder) {
1956  // Register number must be even (see CASP instruction)
1957  if (RegNo & 0x1)
1958  return Fail;
1959 
1960  unsigned Reg = AArch64MCRegisterClasses[RegClassID].getRegister(RegNo / 2);
1961  Inst.addOperand(MCOperand::createReg(Reg));
1962  return Success;
1963 }
1964 
1965 static DecodeStatus DecodeWSeqPairsClassRegisterClass(MCInst &Inst,
1966  unsigned RegNo,
1967  uint64_t Addr,
1968  const void *Decoder) {
1969  return DecodeGPRSeqPairsClassRegisterClass(Inst,
1970  AArch64::WSeqPairsClassRegClassID,
1971  RegNo, Addr, Decoder);
1972 }
1973 
1974 static DecodeStatus DecodeXSeqPairsClassRegisterClass(MCInst &Inst,
1975  unsigned RegNo,
1976  uint64_t Addr,
1977  const void *Decoder) {
1978  return DecodeGPRSeqPairsClassRegisterClass(Inst,
1979  AArch64::XSeqPairsClassRegClassID,
1980  RegNo, Addr, Decoder);
1981 }
1982 
1983 static DecodeStatus DecodeSVELogicalImmInstruction(llvm::MCInst &Inst,
1984  uint32_t insn,
1985  uint64_t Addr,
1986  const void *Decoder) {
1987  unsigned Zdn = fieldFromInstruction(insn, 0, 5);
1988  unsigned imm = fieldFromInstruction(insn, 5, 13);
1989  if (!AArch64_AM::isValidDecodeLogicalImmediate(imm, 64))
1990  return Fail;
1991 
1992  // The same (tied) operand is added twice to the instruction.
1993  DecodeZPRRegisterClass(Inst, Zdn, Addr, Decoder);
1994  if (Inst.getOpcode() != AArch64::DUPM_ZI)
1995  DecodeZPRRegisterClass(Inst, Zdn, Addr, Decoder);
1996  Inst.addOperand(MCOperand::createImm(imm));
1997  return Success;
1998 }
1999 
2000 template<int Bits>
2001 static DecodeStatus DecodeSImm(llvm::MCInst &Inst, uint64_t Imm,
2002  uint64_t Address, const void *Decoder) {
2003  if (Imm & ~((1LL << Bits) - 1))
2004  return Fail;
2005 
2006  // Imm is a signed immediate, so sign extend it.
2007  if (Imm & (1 << (Bits - 1)))
2008  Imm |= ~((1LL << Bits) - 1);
2009 
2010  Inst.addOperand(MCOperand::createImm(Imm));
2011  return Success;
2012 }
2013 
2014 // Decode 8-bit signed/unsigned immediate for a given element width.
2015 template <int ElementWidth>
2016 static DecodeStatus DecodeImm8OptLsl(MCInst &Inst, unsigned Imm,
2017  uint64_t Addr, const void *Decoder) {
2018  unsigned Val = (uint8_t)Imm;
2019  unsigned Shift = (Imm & 0x100) ? 8 : 0;
2020  if (ElementWidth == 8 && Shift)
2021  return Fail;
2022  Inst.addOperand(MCOperand::createImm(Val));
2023  Inst.addOperand(MCOperand::createImm(Shift));
2024  return Success;
2025 }
2026 
2027 // Decode uimm4 ranged from 1-16.
2028 static DecodeStatus DecodeSVEIncDecImm(MCInst &Inst, unsigned Imm,
2029  uint64_t Addr, const void *Decoder) {
2030  Inst.addOperand(MCOperand::createImm(Imm + 1));
2031  return Success;
2032 }
2033 
2034 static DecodeStatus DecodeSVCROp(MCInst &Inst, unsigned Imm, uint64_t Address,
2035  const void *Decoder) {
2036  if (AArch64SVCR::lookupSVCRByEncoding(Imm)) {
2037  Inst.addOperand(MCOperand::createImm(Imm));
2038  return Success;
2039  }
2040  return Fail;
2041 }
llvm::Check::Size
@ Size
Definition: FileCheck.h:73
DecodeSVEIncDecImm
static DecodeStatus DecodeSVEIncDecImm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:2028
MCFixedLenDisassembler.h
GPR64DecoderTable
static const unsigned GPR64DecoderTable[]
Definition: AArch64Disassembler.cpp:482
DecodePCRelLabel19
static DecodeStatus DecodePCRelLabel19(MCInst &Inst, unsigned Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:942
DecodeAuthLoadInstruction
static DecodeStatus DecodeAuthLoadInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1647
createAArch64Disassembler
static MCDisassembler * createAArch64Disassembler(const Target &T, const MCSubtargetInfo &STI, MCContext &Ctx)
Definition: AArch64Disassembler.cpp:265
MI
IRTranslator LLVM IR MI
Definition: IRTranslator.cpp:102
MatrixIndexGPR32_12_15DecoderTable
static const unsigned MatrixIndexGPR32_12_15DecoderTable[]
Definition: AArch64Disassembler.cpp:555
llvm
---------------------— PointerInfo ------------------------------------—
Definition: AllocatorList.h:23
QQDecoderTable
static const unsigned QQDecoderTable[]
Definition: AArch64Disassembler.cpp:792
Reg
unsigned Reg
Definition: MachineSink.cpp:1566
DecodeFPR128_loRegisterClass
static DecodeStatus DecodeFPR128_loRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:390
DecodeZPR3RegisterClass
static DecodeStatus DecodeZPR3RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:677
DecodeSignedLdStInstruction
static DecodeStatus DecodeSignedLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1232
DecodeUnsignedLdStInstruction
static DecodeStatus DecodeUnsignedLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1171
DecodeZPR_3bRegisterClass
static DecodeStatus DecodeZPR_3bRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:634
llvm::MCOperand::createImm
static MCOperand createImm(int64_t Val)
Definition: MCInst.h:141
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:72
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:137
llvm::SmallVector
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1168
DecodeQQQRegisterClass
static DecodeStatus DecodeQQQRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:826
DecodeGPR64x8ClassRegisterClass
static DecodeStatus DecodeGPR64x8ClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:529
LLVMInitializeAArch64Disassembler
LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAArch64Disassembler()
Definition: AArch64Disassembler.cpp:345
ErrorHandling.h
DecodeAddSubImmShift
static DecodeStatus DecodeAddSubImmShift(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1844
AArch64BaseInfo.h
llvm::getTheAArch64_32Target
Target & getTheAArch64_32Target()
Definition: AArch64TargetInfo.cpp:21
Fail
#define Fail
Definition: AArch64Disassembler.cpp:262
llvm::Triple
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:45
DecodeFMOVLaneInstruction
static DecodeStatus DecodeFMOVLaneInstruction(MCInst &Inst, unsigned Insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:983
Disassembler.h
FPR32DecoderTable
static const unsigned FPR32DecoderTable[]
Definition: AArch64Disassembler.cpp:419
DecodeVecShiftR64Imm
static DecodeStatus DecodeVecShiftR64Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1018
Shift
bool Shift
Definition: README.txt:468
llvm::MCDisassembler::SoftFail
@ SoftFail
Definition: MCDisassembler.h:102
AArch64ExternalSymbolizer.h
llvm::tgtok::Bits
@ Bits
Definition: TGLexer.h:50
DecodeMRSSystemRegister
static DecodeStatus DecodeMRSSystemRegister(MCInst &Inst, unsigned Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:965
FPR16DecoderTable
static const unsigned FPR16DecoderTable[]
Definition: AArch64Disassembler.cpp:440
DecodeGPR32RegisterClass
static DecodeStatus DecodeGPR32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:581
createAArch64ExternalSymbolizer
static MCSymbolizer * createAArch64ExternalSymbolizer(const Triple &TT, LLVMOpInfoCallback GetOpInfo, LLVMSymbolLookupCallback SymbolLookUp, void *DisInfo, MCContext *Ctx, std::unique_ptr< MCRelocationInfo > &&RelInfo)
Definition: AArch64Disassembler.cpp:337
DecodeVecShiftL64Imm
static DecodeStatus DecodeVecShiftL64Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1056
DecodeFPR64RegisterClass
static DecodeStatus DecodeFPR64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:408
DecodeDDRegisterClass
static DecodeStatus DecodeDDRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:870
llvm::TargetRegistry::RegisterMCDisassembler
static void RegisterMCDisassembler(Target &T, Target::MCDisassemblerCtorTy Fn)
RegisterMCDisassembler - Register a MCDisassembler implementation for the given target.
Definition: TargetRegistry.h:916
DecodeMoveImmInstruction
static DecodeStatus DecodeMoveImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1138
AArch64Disassembler.h
DecodeVecShiftL16Imm
static DecodeStatus DecodeVecShiftL16Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1066
DecodeGPR64commonRegisterClass
static DecodeStatus DecodeGPR64commonRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:492
llvm::MCInst
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:184
DecodeVecShiftR64ImmNarrow
static DecodeStatus DecodeVecShiftR64ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1023
DecodeGPR64spRegisterClass
static DecodeStatus DecodeGPR64spRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:543
DecodeGPR32spRegisterClass
static DecodeStatus DecodeGPR32spRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:592
GPR64x8DecoderTable
static const unsigned GPR64x8DecoderTable[]
Definition: AArch64Disassembler.cpp:514
DecodeVecShiftLImm
static DecodeStatus DecodeVecShiftLImm(MCInst &Inst, unsigned Imm, unsigned Add)
Definition: AArch64Disassembler.cpp:1012
llvm::MCSymbolizer
Symbolize and annotate disassembled instructions.
Definition: MCSymbolizer.h:39
DecodeUnconditionalBranch
static DecodeStatus DecodeUnconditionalBranch(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1880
DecodeFPR16RegisterClass
static DecodeStatus DecodeFPR16RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:450
x3
In x86 we generate this spiffy xmm0 xmm0 ret in x86 we generate this which could be xmm1 movss xmm1 xmm0 ret In sse4 we could use insertps to make both better Here s another testcase that could use x3
Definition: README-SSE.txt:547
ZZZDecoderTable
static const unsigned ZZZDecoderTable[]
Definition: AArch64Disassembler.cpp:663
MatrixZATileDecoderTable
static const SmallVector< SmallVector< unsigned, 16 >, 5 > MatrixZATileDecoderTable
Definition: AArch64Disassembler.cpp:722
LLVMOpInfoCallback
int(* LLVMOpInfoCallback)(void *DisInfo, uint64_t PC, uint64_t Offset, uint64_t Size, int TagType, void *TagBuf)
The type for the operand information call back function.
Definition: DisassemblerTypes.h:42
P2
This might compile to this xmm1 xorps xmm0 movss xmm0 ret Now consider if the code caused xmm1 to get spilled This might produce this xmm1 movaps xmm0 movaps xmm1 movss xmm0 ret since the reload is only used by these we could fold it into the producing something like xmm1 movaps xmm0 ret saving two instructions The basic idea is that a reload from a spill if only one byte chunk is bring in zeros the one element instead of elements This can be used to simplify a variety of shuffle where the elements are fixed zeros This code generates ugly probably due to costs being off or< 4 x float > * P2
Definition: README-SSE.txt:278
llvm::getTheAArch64leTarget
Target & getTheAArch64leTarget()
Definition: AArch64TargetInfo.cpp:13
llvm::MCDisassembler::Success
@ Success
Definition: MCDisassembler.h:103
DecodeFixedPointScaleImm32
static DecodeStatus DecodeFixedPointScaleImm32(MCInst &Inst, unsigned Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:926
SoftFail
#define SoftFail
Definition: AArch64Disassembler.cpp:263
DecodeVecShiftL8Imm
static DecodeStatus DecodeVecShiftL8Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1071
llvm::MCDisassembler::CommentStream
raw_ostream * CommentStream
Definition: MCDisassembler.h:192
MCInst.h
MCSubtargetInfo.h
llvm::MCSubtargetInfo::getFeatureBits
const FeatureBitset & getFeatureBits() const
Definition: MCSubtargetInfo.h:111
llvm::raw_ostream
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:53
DecodeVecShiftR32ImmNarrow
static DecodeStatus DecodeVecShiftR32ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1034
DecodeZPR_4bRegisterClass
static DecodeStatus DecodeZPR_4bRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:626
DecodeGPR64RegisterClass
static DecodeStatus DecodeGPR64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:503
llvm::MCDisassembler::DecodeStatus
DecodeStatus
Ternary decode status.
Definition: MCDisassembler.h:100
DecodeVecShiftR16Imm
static DecodeStatus DecodeVecShiftR16Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1040
llvm::MCDisassembler::STI
const MCSubtargetInfo & STI
Definition: MCDisassembler.h:170
llvm::MCInst::addOperand
void addOperand(const MCOperand Op)
Definition: MCInst.h:210
AArch64AddressingModes.h
DecodeAdrInstruction
static DecodeStatus DecodeAdrInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1825
DecodeVecShiftR8Imm
static DecodeStatus DecodeVecShiftR8Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1051
Check
static bool Check(DecodeStatus &Out, DecodeStatus In)
Definition: AArch64Disassembler.cpp:243
DecodeExclusiveLdStInstruction
static DecodeStatus DecodeExclusiveLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1430
llvm::tgtok::In
@ In
Definition: TGLexer.h:51
llvm::MCOperand::isImm
bool isImm() const
Definition: MCInst.h:62
LLVMSymbolLookupCallback
const typedef char *(* LLVMSymbolLookupCallback)(void *DisInfo, uint64_t ReferenceValue, uint64_t *ReferenceType, uint64_t ReferencePC, const char **ReferenceName)
The type for the symbol lookup function.
Definition: DisassemblerTypes.h:112
DecodeQQQQRegisterClass
static DecodeStatus DecodeQQQQRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:849
DecodeSImm
static DecodeStatus DecodeSImm(llvm::MCInst &Inst, uint64_t Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:2001
LLVM_EXTERNAL_VISIBILITY
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:132
DecodeQQRegisterClass
static DecodeStatus DecodeQQRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:803
Addr
uint64_t Addr
Definition: ELFObjHandler.cpp:80
extend
_test eax xmm0 eax xmm1 comiss xmm1 setae al movzbl ecx eax edx ecx cmove eax ret Note the cmove can be replaced with a single cmovae There are a number of issues We are introducing a setcc between the result of the intrisic call and select The intrinsic is expected to produce a i32 value so a any extend(which becomes a zero extend) is added. We probably need some kind of target DAG combine hook to fix this. We generate significantly worse code for this than GCC
Definition: README.txt:213
DecodeVecShiftRImm
static DecodeStatus DecodeVecShiftRImm(MCInst &Inst, unsigned Imm, unsigned Add)
Definition: AArch64Disassembler.cpp:1006
move
compiles ldr LCPI1_0 ldr ldr mov lsr tst moveq r1 ldr LCPI1_1 and r0 bx lr It would be better to do something like to fold the shift into the conditional move
Definition: README.txt:546
llvm::MCDisassembler
Superclass for all disassemblers.
Definition: MCDisassembler.h:76
DDDDDecoderTable
static const unsigned DDDDDecoderTable[]
Definition: AArch64Disassembler.cpp:902
DecodeFixedPointScaleImm64
static DecodeStatus DecodeFixedPointScaleImm64(MCInst &Inst, unsigned Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:935
VectorDecoderTable
static const unsigned VectorDecoderTable[]
Definition: AArch64Disassembler.cpp:771
DecodeMatrixTile
static DecodeStatus DecodeMatrixTile(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:734
DecodeZPR2RegisterClass
static DecodeStatus DecodeZPR2RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:653
MCRegisterInfo.h
DecodeAddSubERegInstruction
static DecodeStatus DecodeAddSubERegInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1680
llvm::HighlightColor::Address
@ Address
DecodeDDDRegisterClass
static DecodeStatus DecodeDDDRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:893
llvm::AArch64ExternalSymbolizer
Definition: AArch64ExternalSymbolizer.h:20
DecodeVecShiftL32Imm
static DecodeStatus DecodeVecShiftL32Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1061
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
DecodeModImmTiedInstruction
static DecodeStatus DecodeModImmTiedInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1807
GPR32DecoderTable
static const unsigned GPR32DecoderTable[]
Definition: AArch64Disassembler.cpp:571
ZZDecoderTable
static const unsigned ZZDecoderTable[]
Definition: AArch64Disassembler.cpp:642
llvm::MCDisassembler::tryAddingSymbolicOperand
bool tryAddingSymbolicOperand(MCInst &Inst, int64_t Value, uint64_t Address, bool IsBranch, uint64_t Offset, uint64_t InstSize) const
Definition: MCDisassembler.cpp:26
llvm::getTheARM64_32Target
Target & getTheARM64_32Target()
Definition: AArch64TargetInfo.cpp:29
DecodeMatrixIndexGPR32_12_15RegisterClass
static DecodeStatus DecodeMatrixIndexGPR32_12_15RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:559
FPR64DecoderTable
static const unsigned FPR64DecoderTable[]
Definition: AArch64Disassembler.cpp:398
llvm::ArrayRef< uint8_t >
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:136
llvm::MCOperand::createReg
static MCOperand createReg(unsigned Reg)
Definition: MCInst.h:134
DecodePPRRegisterClass
static DecodeStatus DecodePPRRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:751
uint32_t
Compiler.h
S
add sub stmia L5 ldr r0 bl L_printf $stub Instead of a and a wouldn t it be better to do three moves *Return an aggregate type is even return S
Definition: README.txt:210
LLVM_FALLTHROUGH
#define LLVM_FALLTHROUGH
LLVM_FALLTHROUGH - Mark fallthrough cases in switch statements.
Definition: Compiler.h:273
llvm::MCDisassembler::Fail
@ Fail
Definition: MCDisassembler.h:101
DecodeFPR32RegisterClass
static DecodeStatus DecodeFPR32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:429
llvm::Register
Wrapper class representing virtual and physical registers.
Definition: Register.h:19
FPR8DecoderTable
static const unsigned FPR8DecoderTable[]
Definition: AArch64Disassembler.cpp:461
ZPRDecoderTable
static const unsigned ZPRDecoderTable[]
Definition: AArch64Disassembler.cpp:604
DecodeThreeAddrSRegInstruction
static DecodeStatus DecodeThreeAddrSRegInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1076
DecodeVectorRegisterClass
static DecodeStatus DecodeVectorRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:781
DecodeDDDDRegisterClass
static DecodeStatus DecodeDDDDRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:916
DecodeModImmInstruction
static DecodeStatus DecodeModImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1768
DecodeSystemPStateInstruction
static DecodeStatus DecodeSystemPStateInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1897
bit
compiles ldr LCPI1_0 ldr ldr mov lsr tst moveq r1 ldr LCPI1_1 and r0 bx lr It would be better to do something like to fold the shift into the conditional ldr LCPI1_0 ldr ldr tst movne lsr ldr LCPI1_1 and r0 bx lr it saves an instruction and a register It might be profitable to cse MOVi16 if there are lots of bit immediates with the same bottom half Robert Muth started working on an alternate jump table implementation that does not put the tables in line in the text This is more like the llvm default jump table implementation This might be useful sometime Several revisions of patches are on the mailing beginning while CMP sets them like a subtract Therefore to be able to use CMN for comparisons other than the Z bit
Definition: README.txt:584
FPR128DecoderTable
static const unsigned FPR128DecoderTable[]
Definition: AArch64Disassembler.cpp:369
Success
#define Success
Definition: AArch64Disassembler.cpp:261
DecodeImm8OptLsl
static DecodeStatus DecodeImm8OptLsl(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:2016
DDDDecoderTable
static const unsigned DDDDecoderTable[]
Definition: AArch64Disassembler.cpp:879
llvm::AArch64Disassembler::getInstruction
MCDisassembler::DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size, ArrayRef< uint8_t > Bytes, uint64_t Address, raw_ostream &CStream) const override
Returns the disassembly of a single instruction.
Definition: AArch64Disassembler.cpp:271
MCRelocationInfo.h
QQQQDecoderTable
static const unsigned QQQQDecoderTable[]
Definition: AArch64Disassembler.cpp:835
DDDecoderTable
static const unsigned DDDecoderTable[]
Definition: AArch64Disassembler.cpp:859
llvm::getTheAArch64beTarget
Target & getTheAArch64beTarget()
Definition: AArch64TargetInfo.cpp:17
DecodeGPRSeqPairsClassRegisterClass
static DecodeStatus DecodeGPRSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegClassID, unsigned RegNo, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1951
llvm::MCInst::getOpcode
unsigned getOpcode() const
Definition: MCInst.h:198
DecodeTestAndBranch
static DecodeStatus DecodeTestAndBranch(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1927
AArch64MCTargetDesc.h
DecodeSVCROp
static DecodeStatus DecodeSVCROp(MCInst &Inst, unsigned Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:2034
DecodePPR_3bRegisterClass
static DecodeStatus DecodePPR_3bRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:761
QQQDecoderTable
static const unsigned QQQDecoderTable[]
Definition: AArch64Disassembler.cpp:812
llvm::MCDisassembler::getSubtargetInfo
const MCSubtargetInfo & getSubtargetInfo() const
Definition: MCDisassembler.h:188
DecodeVecShiftR32Imm
static DecodeStatus DecodeVecShiftR32Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1029
DecodeXSeqPairsClassRegisterClass
static DecodeStatus DecodeXSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1974
DecodeFPR128RegisterClass
static DecodeStatus DecodeFPR128RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:379
DecodeVecShiftR16ImmNarrow
static DecodeStatus DecodeVecShiftR16ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1045
DecodeZPR4RegisterClass
static DecodeStatus DecodeZPR4RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:701
DecodeMemExtend
static DecodeStatus DecodeMemExtend(MCInst &Inst, unsigned Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:958
llvm::getTheARM64Target
Target & getTheARM64Target()
Definition: AArch64TargetInfo.cpp:25
llvm::MCInst::getOperand
const MCOperand & getOperand(unsigned i) const
Definition: MCInst.h:206
llvm::AArch64_AM::isValidDecodeLogicalImmediate
static bool isValidDecodeLogicalImmediate(uint64_t val, unsigned regSize)
isValidDecodeLogicalImmediate - Check to see if the logical immediate value in the form "N:immr:imms"...
Definition: AArch64AddressingModes.h:321
llvm::ArrayRef::size
size_t size() const
size - Get the array size.
Definition: ArrayRef.h:165
shift
http eax xorl edx cl sete al setne dl sall eax sall edx But that requires good bit subreg support this might be better It s an extra shift
Definition: README.txt:30
DecodeZPRRegisterClass
static DecodeStatus DecodeZPRRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:615
llvm::AArch64Disassembler
Definition: AArch64Disassembler.h:19
DecodeFPR8RegisterClass
static DecodeStatus DecodeFPR8RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:471
DecodeMSRSystemRegister
static DecodeStatus DecodeMSRSystemRegister(MCInst &Inst, unsigned Imm, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:975
llvm::TargetRegistry::RegisterMCSymbolizer
static void RegisterMCSymbolizer(Target &T, Target::MCSymbolizerCtorTy Fn)
RegisterMCSymbolizer - Register an MCSymbolizer implementation for the given target.
Definition: TargetRegistry.h:1006
DecodeSVELogicalImmInstruction
static DecodeStatus DecodeSVELogicalImmInstruction(llvm::MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1983
llvm::MCOperand
Instances of this class represent operands of the MCInst class.
Definition: MCInst.h:36
DecodeLogicalImmInstruction
static DecodeStatus DecodeLogicalImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1737
DecodePairLdStInstruction
static DecodeStatus DecodePairLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:1513
PPRDecoderTable
static const unsigned PPRDecoderTable[]
Definition: AArch64Disassembler.cpp:744
ZZZZDecoderTable
static const unsigned ZZZZDecoderTable[]
Definition: AArch64Disassembler.cpp:687
TargetRegistry.h
llvm::MCSubtargetInfo
Generic base class for all target subtargets.
Definition: MCSubtargetInfo.h:75
DecodeMatrixTileListRegisterClass
static DecodeStatus DecodeMatrixTileListRegisterClass(MCInst &Inst, unsigned RegMask, uint64_t Address, const void *Decoder)
Definition: AArch64Disassembler.cpp:711
Debug.h
DecodeWSeqPairsClassRegisterClass
static DecodeStatus DecodeWSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Addr, const void *Decoder)
Definition: AArch64Disassembler.cpp:1965
AArch64TargetInfo.h
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