LLVM  15.0.0git
VEDisassembler.cpp
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1 //===- VEDisassembler.cpp - Disassembler for VE -----------------*- C++ -*-===//
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 // This file is part of the VE Disassembler.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "MCTargetDesc/VEMCTargetDesc.h"
14 #include "TargetInfo/VETargetInfo.h"
15 #include "VE.h"
16 #include "llvm/MC/MCAsmInfo.h"
17 #include "llvm/MC/MCContext.h"
18 #include "llvm/MC/MCDecoderOps.h"
19 #include "llvm/MC/MCDisassembler/MCDisassembler.h"
20 #include "llvm/MC/MCInst.h"
21 #include "llvm/MC/TargetRegistry.h"
22 
23 using namespace llvm;
24 
25 #define DEBUG_TYPE "ve-disassembler"
26 
27 typedef MCDisassembler::DecodeStatus DecodeStatus;
28 
29 namespace {
30 
31 /// A disassembler class for VE.
32 class VEDisassembler : public MCDisassembler {
33 public:
34  VEDisassembler(const MCSubtargetInfo &STI, MCContext &Ctx)
35  : MCDisassembler(STI, Ctx) {}
36  virtual ~VEDisassembler() = default;
37 
38  DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size,
39  ArrayRef<uint8_t> Bytes, uint64_t Address,
40  raw_ostream &CStream) const override;
41 };
42 } // namespace
43 
44 static MCDisassembler *createVEDisassembler(const Target &T,
45  const MCSubtargetInfo &STI,
46  MCContext &Ctx) {
47  return new VEDisassembler(STI, Ctx);
48 }
49 
50 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeVEDisassembler() {
51  // Register the disassembler.
52  TargetRegistry::RegisterMCDisassembler(getTheVETarget(),
53  createVEDisassembler);
54 }
55 
56 static const unsigned I32RegDecoderTable[] = {
57  VE::SW0, VE::SW1, VE::SW2, VE::SW3, VE::SW4, VE::SW5, VE::SW6,
58  VE::SW7, VE::SW8, VE::SW9, VE::SW10, VE::SW11, VE::SW12, VE::SW13,
59  VE::SW14, VE::SW15, VE::SW16, VE::SW17, VE::SW18, VE::SW19, VE::SW20,
60  VE::SW21, VE::SW22, VE::SW23, VE::SW24, VE::SW25, VE::SW26, VE::SW27,
61  VE::SW28, VE::SW29, VE::SW30, VE::SW31, VE::SW32, VE::SW33, VE::SW34,
62  VE::SW35, VE::SW36, VE::SW37, VE::SW38, VE::SW39, VE::SW40, VE::SW41,
63  VE::SW42, VE::SW43, VE::SW44, VE::SW45, VE::SW46, VE::SW47, VE::SW48,
64  VE::SW49, VE::SW50, VE::SW51, VE::SW52, VE::SW53, VE::SW54, VE::SW55,
65  VE::SW56, VE::SW57, VE::SW58, VE::SW59, VE::SW60, VE::SW61, VE::SW62,
66  VE::SW63};
67 
68 static const unsigned I64RegDecoderTable[] = {
69  VE::SX0, VE::SX1, VE::SX2, VE::SX3, VE::SX4, VE::SX5, VE::SX6,
70  VE::SX7, VE::SX8, VE::SX9, VE::SX10, VE::SX11, VE::SX12, VE::SX13,
71  VE::SX14, VE::SX15, VE::SX16, VE::SX17, VE::SX18, VE::SX19, VE::SX20,
72  VE::SX21, VE::SX22, VE::SX23, VE::SX24, VE::SX25, VE::SX26, VE::SX27,
73  VE::SX28, VE::SX29, VE::SX30, VE::SX31, VE::SX32, VE::SX33, VE::SX34,
74  VE::SX35, VE::SX36, VE::SX37, VE::SX38, VE::SX39, VE::SX40, VE::SX41,
75  VE::SX42, VE::SX43, VE::SX44, VE::SX45, VE::SX46, VE::SX47, VE::SX48,
76  VE::SX49, VE::SX50, VE::SX51, VE::SX52, VE::SX53, VE::SX54, VE::SX55,
77  VE::SX56, VE::SX57, VE::SX58, VE::SX59, VE::SX60, VE::SX61, VE::SX62,
78  VE::SX63};
79 
80 static const unsigned F32RegDecoderTable[] = {
81  VE::SF0, VE::SF1, VE::SF2, VE::SF3, VE::SF4, VE::SF5, VE::SF6,
82  VE::SF7, VE::SF8, VE::SF9, VE::SF10, VE::SF11, VE::SF12, VE::SF13,
83  VE::SF14, VE::SF15, VE::SF16, VE::SF17, VE::SF18, VE::SF19, VE::SF20,
84  VE::SF21, VE::SF22, VE::SF23, VE::SF24, VE::SF25, VE::SF26, VE::SF27,
85  VE::SF28, VE::SF29, VE::SF30, VE::SF31, VE::SF32, VE::SF33, VE::SF34,
86  VE::SF35, VE::SF36, VE::SF37, VE::SF38, VE::SF39, VE::SF40, VE::SF41,
87  VE::SF42, VE::SF43, VE::SF44, VE::SF45, VE::SF46, VE::SF47, VE::SF48,
88  VE::SF49, VE::SF50, VE::SF51, VE::SF52, VE::SF53, VE::SF54, VE::SF55,
89  VE::SF56, VE::SF57, VE::SF58, VE::SF59, VE::SF60, VE::SF61, VE::SF62,
90  VE::SF63};
91 
92 static const unsigned F128RegDecoderTable[] = {
93  VE::Q0, VE::Q1, VE::Q2, VE::Q3, VE::Q4, VE::Q5, VE::Q6, VE::Q7,
94  VE::Q8, VE::Q9, VE::Q10, VE::Q11, VE::Q12, VE::Q13, VE::Q14, VE::Q15,
95  VE::Q16, VE::Q17, VE::Q18, VE::Q19, VE::Q20, VE::Q21, VE::Q22, VE::Q23,
96  VE::Q24, VE::Q25, VE::Q26, VE::Q27, VE::Q28, VE::Q29, VE::Q30, VE::Q31};
97 
98 static const unsigned V64RegDecoderTable[] = {
99  VE::V0, VE::V1, VE::V2, VE::V3, VE::V4, VE::V5, VE::V6, VE::V7,
100  VE::V8, VE::V9, VE::V10, VE::V11, VE::V12, VE::V13, VE::V14, VE::V15,
101  VE::V16, VE::V17, VE::V18, VE::V19, VE::V20, VE::V21, VE::V22, VE::V23,
102  VE::V24, VE::V25, VE::V26, VE::V27, VE::V28, VE::V29, VE::V30, VE::V31,
103  VE::V32, VE::V33, VE::V34, VE::V35, VE::V36, VE::V37, VE::V38, VE::V39,
104  VE::V40, VE::V41, VE::V42, VE::V43, VE::V44, VE::V45, VE::V46, VE::V47,
105  VE::V48, VE::V49, VE::V50, VE::V51, VE::V52, VE::V53, VE::V54, VE::V55,
106  VE::V56, VE::V57, VE::V58, VE::V59, VE::V60, VE::V61, VE::V62, VE::V63};
107 
108 static const unsigned VMRegDecoderTable[] = {
109  VE::VM0, VE::VM1, VE::VM2, VE::VM3, VE::VM4, VE::VM5,
110  VE::VM6, VE::VM7, VE::VM8, VE::VM9, VE::VM10, VE::VM11,
111  VE::VM12, VE::VM13, VE::VM14, VE::VM15};
112 
113 static const unsigned VM512RegDecoderTable[] = {VE::VMP0, VE::VMP1, VE::VMP2,
114  VE::VMP3, VE::VMP4, VE::VMP5,
115  VE::VMP6, VE::VMP7};
116 
117 static const unsigned MiscRegDecoderTable[] = {
118  VE::USRCC, VE::PSW, VE::SAR, VE::NoRegister,
119  VE::NoRegister, VE::NoRegister, VE::NoRegister, VE::PMMR,
120  VE::PMCR0, VE::PMCR1, VE::PMCR2, VE::PMCR3,
121  VE::NoRegister, VE::NoRegister, VE::NoRegister, VE::NoRegister,
122  VE::PMC0, VE::PMC1, VE::PMC2, VE::PMC3,
123  VE::PMC4, VE::PMC5, VE::PMC6, VE::PMC7,
124  VE::PMC8, VE::PMC9, VE::PMC10, VE::PMC11,
125  VE::PMC12, VE::PMC13, VE::PMC14};
126 
127 static DecodeStatus DecodeI32RegisterClass(MCInst &Inst, unsigned RegNo,
128  uint64_t Address,
129  const MCDisassembler *Decoder) {
130  if (RegNo > 63)
131  return MCDisassembler::Fail;
132  unsigned Reg = I32RegDecoderTable[RegNo];
133  Inst.addOperand(MCOperand::createReg(Reg));
134  return MCDisassembler::Success;
135 }
136 
137 static DecodeStatus DecodeI64RegisterClass(MCInst &Inst, unsigned RegNo,
138  uint64_t Address,
139  const MCDisassembler *Decoder) {
140  if (RegNo > 63)
141  return MCDisassembler::Fail;
142  unsigned Reg = I64RegDecoderTable[RegNo];
143  Inst.addOperand(MCOperand::createReg(Reg));
144  return MCDisassembler::Success;
145 }
146 
147 static DecodeStatus DecodeF32RegisterClass(MCInst &Inst, unsigned RegNo,
148  uint64_t Address,
149  const MCDisassembler *Decoder) {
150  if (RegNo > 63)
151  return MCDisassembler::Fail;
152  unsigned Reg = F32RegDecoderTable[RegNo];
153  Inst.addOperand(MCOperand::createReg(Reg));
154  return MCDisassembler::Success;
155 }
156 
157 static DecodeStatus DecodeF128RegisterClass(MCInst &Inst, unsigned RegNo,
158  uint64_t Address,
159  const MCDisassembler *Decoder) {
160  if (RegNo % 2 || RegNo > 63)
161  return MCDisassembler::Fail;
162  unsigned Reg = F128RegDecoderTable[RegNo / 2];
163  Inst.addOperand(MCOperand::createReg(Reg));
164  return MCDisassembler::Success;
165 }
166 
167 static DecodeStatus DecodeV64RegisterClass(MCInst &Inst, unsigned RegNo,
168  uint64_t Address,
169  const MCDisassembler *Decoder) {
170  unsigned Reg = VE::NoRegister;
171  if (RegNo == 255)
172  Reg = VE::VIX;
173  else if (RegNo > 63)
174  return MCDisassembler::Fail;
175  else
176  Reg = V64RegDecoderTable[RegNo];
177  Inst.addOperand(MCOperand::createReg(Reg));
178  return MCDisassembler::Success;
179 }
180 
181 static DecodeStatus DecodeVMRegisterClass(MCInst &Inst, unsigned RegNo,
182  uint64_t Address,
183  const MCDisassembler *Decoder) {
184  if (RegNo > 15)
185  return MCDisassembler::Fail;
186  unsigned Reg = VMRegDecoderTable[RegNo];
187  Inst.addOperand(MCOperand::createReg(Reg));
188  return MCDisassembler::Success;
189 }
190 
191 static DecodeStatus DecodeVM512RegisterClass(MCInst &Inst, unsigned RegNo,
192  uint64_t Address,
193  const MCDisassembler *Decoder) {
194  if (RegNo % 2 || RegNo > 15)
195  return MCDisassembler::Fail;
196  unsigned Reg = VM512RegDecoderTable[RegNo / 2];
197  Inst.addOperand(MCOperand::createReg(Reg));
198  return MCDisassembler::Success;
199 }
200 
201 static DecodeStatus DecodeMISCRegisterClass(MCInst &Inst, unsigned RegNo,
202  uint64_t Address,
203  const MCDisassembler *Decoder) {
204  if (RegNo > 30)
205  return MCDisassembler::Fail;
206  unsigned Reg = MiscRegDecoderTable[RegNo];
207  if (Reg == VE::NoRegister)
208  return MCDisassembler::Fail;
209  Inst.addOperand(MCOperand::createReg(Reg));
210  return MCDisassembler::Success;
211 }
212 
213 static DecodeStatus DecodeASX(MCInst &Inst, uint64_t insn, uint64_t Address,
214  const MCDisassembler *Decoder);
215 static DecodeStatus DecodeLoadI32(MCInst &Inst, uint64_t insn, uint64_t Address,
216  const MCDisassembler *Decoder);
217 static DecodeStatus DecodeStoreI32(MCInst &Inst, uint64_t insn,
218  uint64_t Address,
219  const MCDisassembler *Decoder);
220 static DecodeStatus DecodeLoadI64(MCInst &Inst, uint64_t insn, uint64_t Address,
221  const MCDisassembler *Decoder);
222 static DecodeStatus DecodeStoreI64(MCInst &Inst, uint64_t insn,
223  uint64_t Address,
224  const MCDisassembler *Decoder);
225 static DecodeStatus DecodeLoadF32(MCInst &Inst, uint64_t insn, uint64_t Address,
226  const MCDisassembler *Decoder);
227 static DecodeStatus DecodeStoreF32(MCInst &Inst, uint64_t insn,
228  uint64_t Address,
229  const MCDisassembler *Decoder);
230 static DecodeStatus DecodeLoadASI64(MCInst &Inst, uint64_t insn,
231  uint64_t Address,
232  const MCDisassembler *Decoder);
233 static DecodeStatus DecodeStoreASI64(MCInst &Inst, uint64_t insn,
234  uint64_t Address,
235  const MCDisassembler *Decoder);
236 static DecodeStatus DecodeTS1AMI64(MCInst &Inst, uint64_t insn,
237  uint64_t Address,
238  const MCDisassembler *Decoder);
239 static DecodeStatus DecodeTS1AMI32(MCInst &Inst, uint64_t insn,
240  uint64_t Address,
241  const MCDisassembler *Decoder);
242 static DecodeStatus DecodeCASI64(MCInst &Inst, uint64_t insn, uint64_t Address,
243  const MCDisassembler *Decoder);
244 static DecodeStatus DecodeCASI32(MCInst &Inst, uint64_t insn, uint64_t Address,
245  const MCDisassembler *Decoder);
246 static DecodeStatus DecodeCall(MCInst &Inst, uint64_t insn, uint64_t Address,
247  const MCDisassembler *Decoder);
248 static DecodeStatus DecodeSIMM7(MCInst &Inst, uint64_t insn, uint64_t Address,
249  const MCDisassembler *Decoder);
250 static DecodeStatus DecodeSIMM32(MCInst &Inst, uint64_t insn, uint64_t Address,
251  const MCDisassembler *Decoder);
252 static DecodeStatus DecodeCCOperand(MCInst &Inst, uint64_t insn,
253  uint64_t Address,
254  const MCDisassembler *Decoder);
255 static DecodeStatus DecodeRDOperand(MCInst &Inst, uint64_t insn,
256  uint64_t Address,
257  const MCDisassembler *Decoder);
258 static DecodeStatus DecodeBranchCondition(MCInst &Inst, uint64_t insn,
259  uint64_t Address,
260  const MCDisassembler *Decoder);
261 static DecodeStatus DecodeBranchConditionAlways(MCInst &Inst, uint64_t insn,
262  uint64_t Address,
263  const MCDisassembler *Decoder);
264 
265 #include "VEGenDisassemblerTables.inc"
266 
267 /// Read four bytes from the ArrayRef and return 32 bit word.
268 static DecodeStatus readInstruction64(ArrayRef<uint8_t> Bytes, uint64_t Address,
269  uint64_t &Size, uint64_t &Insn,
270  bool IsLittleEndian) {
271  // We want to read exactly 8 Bytes of data.
272  if (Bytes.size() < 8) {
273  Size = 0;
274  return MCDisassembler::Fail;
275  }
276 
277  Insn = IsLittleEndian
278  ? ((uint64_t)Bytes[0] << 0) | ((uint64_t)Bytes[1] << 8) |
279  ((uint64_t)Bytes[2] << 16) | ((uint64_t)Bytes[3] << 24) |
280  ((uint64_t)Bytes[4] << 32) | ((uint64_t)Bytes[5] << 40) |
281  ((uint64_t)Bytes[6] << 48) | ((uint64_t)Bytes[7] << 56)
282  : ((uint64_t)Bytes[7] << 0) | ((uint64_t)Bytes[6] << 8) |
283  ((uint64_t)Bytes[5] << 16) | ((uint64_t)Bytes[4] << 24) |
284  ((uint64_t)Bytes[3] << 32) | ((uint64_t)Bytes[2] << 40) |
285  ((uint64_t)Bytes[1] << 48) | ((uint64_t)Bytes[0] << 56);
286 
287  return MCDisassembler::Success;
288 }
289 
290 DecodeStatus VEDisassembler::getInstruction(MCInst &Instr, uint64_t &Size,
291  ArrayRef<uint8_t> Bytes,
292  uint64_t Address,
293  raw_ostream &CStream) const {
294  uint64_t Insn;
295  bool isLittleEndian = getContext().getAsmInfo()->isLittleEndian();
296  DecodeStatus Result =
297  readInstruction64(Bytes, Address, Size, Insn, isLittleEndian);
298  if (Result == MCDisassembler::Fail)
299  return MCDisassembler::Fail;
300 
301  // Calling the auto-generated decoder function.
302 
303  Result = decodeInstruction(DecoderTableVE64, Instr, Insn, Address, this, STI);
304 
305  if (Result != MCDisassembler::Fail) {
306  Size = 8;
307  return Result;
308  }
309 
310  return MCDisassembler::Fail;
311 }
312 
313 typedef DecodeStatus (*DecodeFunc)(MCInst &MI, unsigned RegNo, uint64_t Address,
314  const MCDisassembler *Decoder);
315 
316 static DecodeStatus DecodeASX(MCInst &MI, uint64_t insn, uint64_t Address,
317  const MCDisassembler *Decoder) {
318  unsigned sy = fieldFromInstruction(insn, 40, 7);
319  bool cy = fieldFromInstruction(insn, 47, 1);
320  unsigned sz = fieldFromInstruction(insn, 32, 7);
321  bool cz = fieldFromInstruction(insn, 39, 1);
322  uint64_t simm32 = SignExtend64<32>(fieldFromInstruction(insn, 0, 32));
323  DecodeStatus status;
324 
325  // Decode sz.
326  if (cz) {
327  status = DecodeI64RegisterClass(MI, sz, Address, Decoder);
328  if (status != MCDisassembler::Success)
329  return status;
330  } else {
331  MI.addOperand(MCOperand::createImm(0));
332  }
333 
334  // Decode sy.
335  if (cy) {
336  status = DecodeI64RegisterClass(MI, sy, Address, Decoder);
337  if (status != MCDisassembler::Success)
338  return status;
339  } else {
340  MI.addOperand(MCOperand::createImm(SignExtend32<7>(sy)));
341  }
342 
343  // Decode simm32.
344  MI.addOperand(MCOperand::createImm(simm32));
345 
346  return MCDisassembler::Success;
347 }
348 
349 static DecodeStatus DecodeAS(MCInst &MI, uint64_t insn, uint64_t Address,
350  const MCDisassembler *Decoder) {
351  unsigned sz = fieldFromInstruction(insn, 32, 7);
352  bool cz = fieldFromInstruction(insn, 39, 1);
353  uint64_t simm32 = SignExtend64<32>(fieldFromInstruction(insn, 0, 32));
354  DecodeStatus status;
355 
356  // Decode sz.
357  if (cz) {
358  status = DecodeI64RegisterClass(MI, sz, Address, Decoder);
359  if (status != MCDisassembler::Success)
360  return status;
361  } else {
362  MI.addOperand(MCOperand::createImm(0));
363  }
364 
365  // Decode simm32.
366  MI.addOperand(MCOperand::createImm(simm32));
367 
368  return MCDisassembler::Success;
369 }
370 
371 static DecodeStatus DecodeMem(MCInst &MI, uint64_t insn, uint64_t Address,
372  const MCDisassembler *Decoder, bool isLoad,
373  DecodeFunc DecodeSX) {
374  unsigned sx = fieldFromInstruction(insn, 48, 7);
375 
376  DecodeStatus status;
377  if (isLoad) {
378  status = DecodeSX(MI, sx, Address, Decoder);
379  if (status != MCDisassembler::Success)
380  return status;
381  }
382 
383  status = DecodeASX(MI, insn, Address, Decoder);
384  if (status != MCDisassembler::Success)
385  return status;
386 
387  if (!isLoad) {
388  status = DecodeSX(MI, sx, Address, Decoder);
389  if (status != MCDisassembler::Success)
390  return status;
391  }
392  return MCDisassembler::Success;
393 }
394 
395 static DecodeStatus DecodeMemAS(MCInst &MI, uint64_t insn, uint64_t Address,
396  const MCDisassembler *Decoder, bool isLoad,
397  DecodeFunc DecodeSX) {
398  unsigned sx = fieldFromInstruction(insn, 48, 7);
399 
400  DecodeStatus status;
401  if (isLoad) {
402  status = DecodeSX(MI, sx, Address, Decoder);
403  if (status != MCDisassembler::Success)
404  return status;
405  }
406 
407  status = DecodeAS(MI, insn, Address, Decoder);
408  if (status != MCDisassembler::Success)
409  return status;
410 
411  if (!isLoad) {
412  status = DecodeSX(MI, sx, Address, Decoder);
413  if (status != MCDisassembler::Success)
414  return status;
415  }
416  return MCDisassembler::Success;
417 }
418 
419 static DecodeStatus DecodeLoadI32(MCInst &Inst, uint64_t insn, uint64_t Address,
420  const MCDisassembler *Decoder) {
421  return DecodeMem(Inst, insn, Address, Decoder, true, DecodeI32RegisterClass);
422 }
423 
424 static DecodeStatus DecodeStoreI32(MCInst &Inst, uint64_t insn,
425  uint64_t Address,
426  const MCDisassembler *Decoder) {
427  return DecodeMem(Inst, insn, Address, Decoder, false, DecodeI32RegisterClass);
428 }
429 
430 static DecodeStatus DecodeLoadI64(MCInst &Inst, uint64_t insn, uint64_t Address,
431  const MCDisassembler *Decoder) {
432  return DecodeMem(Inst, insn, Address, Decoder, true, DecodeI64RegisterClass);
433 }
434 
435 static DecodeStatus DecodeStoreI64(MCInst &Inst, uint64_t insn,
436  uint64_t Address,
437  const MCDisassembler *Decoder) {
438  return DecodeMem(Inst, insn, Address, Decoder, false, DecodeI64RegisterClass);
439 }
440 
441 static DecodeStatus DecodeLoadF32(MCInst &Inst, uint64_t insn, uint64_t Address,
442  const MCDisassembler *Decoder) {
443  return DecodeMem(Inst, insn, Address, Decoder, true, DecodeF32RegisterClass);
444 }
445 
446 static DecodeStatus DecodeStoreF32(MCInst &Inst, uint64_t insn,
447  uint64_t Address,
448  const MCDisassembler *Decoder) {
449  return DecodeMem(Inst, insn, Address, Decoder, false, DecodeF32RegisterClass);
450 }
451 
452 static DecodeStatus DecodeLoadASI64(MCInst &Inst, uint64_t insn,
453  uint64_t Address,
454  const MCDisassembler *Decoder) {
455  return DecodeMemAS(Inst, insn, Address, Decoder, true,
456  DecodeI64RegisterClass);
457 }
458 
459 static DecodeStatus DecodeStoreASI64(MCInst &Inst, uint64_t insn,
460  uint64_t Address,
461  const MCDisassembler *Decoder) {
462  return DecodeMemAS(Inst, insn, Address, Decoder, false,
463  DecodeI64RegisterClass);
464 }
465 
466 static DecodeStatus DecodeCAS(MCInst &MI, uint64_t insn, uint64_t Address,
467  const MCDisassembler *Decoder, bool isImmOnly,
468  bool isUImm, DecodeFunc DecodeSX) {
469  unsigned sx = fieldFromInstruction(insn, 48, 7);
470  bool cy = fieldFromInstruction(insn, 47, 1);
471  unsigned sy = fieldFromInstruction(insn, 40, 7);
472 
473  // Add $sx.
474  DecodeStatus status;
475  status = DecodeSX(MI, sx, Address, Decoder);
476  if (status != MCDisassembler::Success)
477  return status;
478 
479  // Add $disp($sz).
480  status = DecodeAS(MI, insn, Address, Decoder);
481  if (status != MCDisassembler::Success)
482  return status;
483 
484  // Add $sy.
485  if (cy && !isImmOnly) {
486  status = DecodeSX(MI, sy, Address, Decoder);
487  if (status != MCDisassembler::Success)
488  return status;
489  } else {
490  if (isUImm)
491  MI.addOperand(MCOperand::createImm(sy));
492  else
493  MI.addOperand(MCOperand::createImm(SignExtend32<7>(sy)));
494  }
495 
496  // Add $sd.
497  status = DecodeSX(MI, sx, Address, Decoder);
498  if (status != MCDisassembler::Success)
499  return status;
500 
501  return MCDisassembler::Success;
502 }
503 
504 static DecodeStatus DecodeTS1AMI64(MCInst &MI, uint64_t insn, uint64_t Address,
505  const MCDisassembler *Decoder) {
506  return DecodeCAS(MI, insn, Address, Decoder, false, true,
507  DecodeI64RegisterClass);
508 }
509 
510 static DecodeStatus DecodeTS1AMI32(MCInst &MI, uint64_t insn, uint64_t Address,
511  const MCDisassembler *Decoder) {
512  return DecodeCAS(MI, insn, Address, Decoder, false, true,
513  DecodeI32RegisterClass);
514 }
515 
516 static DecodeStatus DecodeCASI64(MCInst &MI, uint64_t insn, uint64_t Address,
517  const MCDisassembler *Decoder) {
518  return DecodeCAS(MI, insn, Address, Decoder, false, false,
519  DecodeI64RegisterClass);
520 }
521 
522 static DecodeStatus DecodeCASI32(MCInst &MI, uint64_t insn, uint64_t Address,
523  const MCDisassembler *Decoder) {
524  return DecodeCAS(MI, insn, Address, Decoder, false, false,
525  DecodeI32RegisterClass);
526 }
527 
528 static DecodeStatus DecodeCall(MCInst &Inst, uint64_t insn, uint64_t Address,
529  const MCDisassembler *Decoder) {
530  return DecodeMem(Inst, insn, Address, Decoder, true, DecodeI64RegisterClass);
531 }
532 
533 static DecodeStatus DecodeSIMM7(MCInst &MI, uint64_t insn, uint64_t Address,
534  const MCDisassembler *Decoder) {
535  uint64_t tgt = SignExtend64<7>(insn);
536  MI.addOperand(MCOperand::createImm(tgt));
537  return MCDisassembler::Success;
538 }
539 
540 static DecodeStatus DecodeSIMM32(MCInst &MI, uint64_t insn, uint64_t Address,
541  const MCDisassembler *Decoder) {
542  uint64_t tgt = SignExtend64<32>(insn);
543  MI.addOperand(MCOperand::createImm(tgt));
544  return MCDisassembler::Success;
545 }
546 
547 static bool isIntegerBCKind(MCInst &MI) {
548 
549 #define BCm_kind(NAME) \
550  case NAME##rri: \
551  case NAME##rzi: \
552  case NAME##iri: \
553  case NAME##izi: \
554  case NAME##rri_nt: \
555  case NAME##rzi_nt: \
556  case NAME##iri_nt: \
557  case NAME##izi_nt: \
558  case NAME##rri_t: \
559  case NAME##rzi_t: \
560  case NAME##iri_t: \
561  case NAME##izi_t:
562 
563 #define BCRm_kind(NAME) \
564  case NAME##rr: \
565  case NAME##ir: \
566  case NAME##rr_nt: \
567  case NAME##ir_nt: \
568  case NAME##rr_t: \
569  case NAME##ir_t:
570 
571  {
572  using namespace llvm::VE;
573  switch (MI.getOpcode()) {
574  BCm_kind(BCFL) BCm_kind(BCFW) BCRm_kind(BRCFL)
575  BCRm_kind(BRCFW) return true;
576  }
577  }
578 #undef BCm_kind
579 
580  return false;
581 }
582 
583 // Decode CC Operand field.
584 static DecodeStatus DecodeCCOperand(MCInst &MI, uint64_t cf, uint64_t Address,
585  const MCDisassembler *Decoder) {
586  MI.addOperand(MCOperand::createImm(VEValToCondCode(cf, isIntegerBCKind(MI))));
587  return MCDisassembler::Success;
588 }
589 
590 // Decode RD Operand field.
591 static DecodeStatus DecodeRDOperand(MCInst &MI, uint64_t cf, uint64_t Address,
592  const MCDisassembler *Decoder) {
593  MI.addOperand(MCOperand::createImm(VEValToRD(cf)));
594  return MCDisassembler::Success;
595 }
596 
597 // Decode branch condition instruction and CCOperand field in it.
598 static DecodeStatus DecodeBranchCondition(MCInst &MI, uint64_t insn,
599  uint64_t Address,
600  const MCDisassembler *Decoder) {
601  unsigned cf = fieldFromInstruction(insn, 48, 4);
602  bool cy = fieldFromInstruction(insn, 47, 1);
603  unsigned sy = fieldFromInstruction(insn, 40, 7);
604 
605  // Decode cf.
606  MI.addOperand(MCOperand::createImm(VEValToCondCode(cf, isIntegerBCKind(MI))));
607 
608  // Decode sy.
609  DecodeStatus status;
610  if (cy) {
611  status = DecodeI64RegisterClass(MI, sy, Address, Decoder);
612  if (status != MCDisassembler::Success)
613  return status;
614  } else {
615  MI.addOperand(MCOperand::createImm(SignExtend32<7>(sy)));
616  }
617 
618  // Decode MEMri.
619  return DecodeAS(MI, insn, Address, Decoder);
620 }
621 
622 static DecodeStatus DecodeBranchConditionAlways(MCInst &MI, uint64_t insn,
623  uint64_t Address,
624  const MCDisassembler *Decoder) {
625  // Decode MEMri.
626  return DecodeAS(MI, insn, Address, Decoder);
627 }
llvm::Check::Size
@ Size
Definition: FileCheck.h:77
F128RegDecoderTable
static const unsigned F128RegDecoderTable[]
Definition: VEDisassembler.cpp:92
MI
IRTranslator LLVM IR MI
Definition: IRTranslator.cpp:104
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:17
DecodeMemAS
static DecodeStatus DecodeMemAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isLoad, DecodeFunc DecodeSX)
Definition: VEDisassembler.cpp:395
MCDisassembler.h
T
llvm::MCOperand::createImm
static MCOperand createImm(int64_t Val)
Definition: MCInst.h:141
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:74
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:140
LLVMInitializeVEDisassembler
LLVM_EXTERNAL_VISIBILITY void LLVMInitializeVEDisassembler()
Definition: VEDisassembler.cpp:50
DecodeTS1AMI64
static DecodeStatus DecodeTS1AMI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:504
llvm::X86Disassembler::Reg
Reg
All possible values of the reg field in the ModR/M byte.
Definition: X86DisassemblerDecoder.h:462
DecodeAS
static DecodeStatus DecodeAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:349
DecodeBranchConditionAlways
static DecodeStatus DecodeBranchConditionAlways(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:622
llvm::TargetRegistry::RegisterMCDisassembler
static void RegisterMCDisassembler(Target &T, Target::MCDisassemblerCtorTy Fn)
RegisterMCDisassembler - Register a MCDisassembler implementation for the given target.
Definition: TargetRegistry.h:933
readInstruction64
static DecodeStatus readInstruction64(ArrayRef< uint8_t > Bytes, uint64_t Address, uint64_t &Size, uint64_t &Insn, bool IsLittleEndian)
Read four bytes from the ArrayRef and return 32 bit word.
Definition: VEDisassembler.cpp:268
llvm::MCInst
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:184
DecodeASX
static DecodeStatus DecodeASX(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:316
MCDecoderOps.h
DecodeLoadI32
static DecodeStatus DecodeLoadI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:419
DecodeLoadASI64
static DecodeStatus DecodeLoadASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:452
llvm::getTheVETarget
Target & getTheVETarget()
Definition: VETargetInfo.cpp:14
DecodeVMRegisterClass
static DecodeStatus DecodeVMRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:181
DecodeI32RegisterClass
static DecodeStatus DecodeI32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:127
DecodeF128RegisterClass
static DecodeStatus DecodeF128RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:157
MCContext.h
llvm::ms_demangle::QualifierMangleMode::Result
@ Result
llvm::MCDisassembler::Success
@ Success
Definition: MCDisassembler.h:112
DecodeCAS
static DecodeStatus DecodeCAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isImmOnly, bool isUImm, DecodeFunc DecodeSX)
Definition: VEDisassembler.cpp:466
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MiscRegDecoderTable
static const unsigned MiscRegDecoderTable[]
Definition: VEDisassembler.cpp:117
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This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:54
llvm::MCDisassembler::DecodeStatus
DecodeStatus
Ternary decode status.
Definition: MCDisassembler.h:109
llvm::MCInst::addOperand
void addOperand(const MCOperand Op)
Definition: MCInst.h:210
DecodeStatus
MCDisassembler::DecodeStatus DecodeStatus
Definition: VEDisassembler.cpp:27
VEMCTargetDesc.h
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static const unsigned I64RegDecoderTable[]
Definition: VEDisassembler.cpp:68
V64RegDecoderTable
static const unsigned V64RegDecoderTable[]
Definition: VEDisassembler.cpp:98
DecodeSIMM32
static DecodeStatus DecodeSIMM32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:540
llvm::NVPTX::PTXLdStInstCode::V4
@ V4
Definition: NVPTX.h:124
uint64_t
LLVM_EXTERNAL_VISIBILITY
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:126
DecodeV64RegisterClass
static DecodeStatus DecodeV64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:167
llvm::MCDisassembler
Superclass for all disassemblers.
Definition: MCDisassembler.h:85
DecodeI64RegisterClass
static DecodeStatus DecodeI64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:137
DecodeVM512RegisterClass
static DecodeStatus DecodeVM512RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:191
DecodeStoreI32
static DecodeStatus DecodeStoreI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:424
DecodeStoreASI64
static DecodeStatus DecodeStoreASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:459
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static VECC::CondCode VEValToCondCode(unsigned Val, bool IsInteger)
Definition: VE.h:200
DecodeStoreF32
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llvm::ArrayRef< uint8_t >
MCAsmInfo.h
isLoad
static bool isLoad(int Opcode)
Definition: ARCInstrInfo.cpp:53
llvm::MCOperand::createReg
static MCOperand createReg(unsigned Reg)
Definition: MCInst.h:134
BCm_kind
#define BCm_kind(NAME)
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@ Fail
Definition: MCDisassembler.h:110
VETargetInfo.h
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DecodeStatus(* DecodeFunc)(MCInst &MI, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:313
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Definition: VEDisassembler.cpp:108
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Definition: NVPTX.h:123
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Definition: AArch64MIPeepholeOpt.cpp:132
DecodeCCOperand
static DecodeStatus DecodeCCOperand(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:584
DecodeSIMM7
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Definition: VEDisassembler.cpp:533
llvm::VEValToRD
static VERD::RoundingMode VEValToRD(unsigned Val)
Definition: VE.h:304
DecodeLoadI64
static DecodeStatus DecodeLoadI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:430
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static DecodeStatus DecodeTS1AMI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:510
VE.h
I32RegDecoderTable
static const unsigned I32RegDecoderTable[]
Definition: VEDisassembler.cpp:56
DecodeF32RegisterClass
static DecodeStatus DecodeF32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:147
DecodeCall
static DecodeStatus DecodeCall(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:528
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DecodeMISCRegisterClass
static DecodeStatus DecodeMISCRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
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std::error_code status(const Twine &path, file_status &result, bool follow=true)
Get file status as if by POSIX stat().
DecodeCASI64
static DecodeStatus DecodeCASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:516
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size_t size() const
size - Get the array size.
Definition: ArrayRef.h:164
llvm::VE
Definition: VEFixupKinds.h:15
DecodeRDOperand
static DecodeStatus DecodeRDOperand(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:591
DecodeBranchCondition
static DecodeStatus DecodeBranchCondition(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:598
DecodeMem
static DecodeStatus DecodeMem(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isLoad, DecodeFunc DecodeSX)
Definition: VEDisassembler.cpp:371
TargetRegistry.h
llvm::MCSubtargetInfo
Generic base class for all target subtargets.
Definition: MCSubtargetInfo.h:76
DecodeCASI32
static DecodeStatus DecodeCASI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:522
DecodeLoadF32
static DecodeStatus DecodeLoadF32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:441
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static DecodeStatus DecodeStoreI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:435
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#define BCRm_kind(NAME)
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static const unsigned VM512RegDecoderTable[]
Definition: VEDisassembler.cpp:113
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