LLVM 20.0.0git
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
23using namespace llvm;
24
25#define DEBUG_TYPE "ve-disassembler"
26
27typedef MCDisassembler::DecodeStatus DecodeStatus;
28
29namespace {
30
31/// A disassembler class for VE.
32class VEDisassembler : public MCDisassembler {
33public:
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
44static MCDisassembler *createVEDisassembler(const Target &T,
45 const MCSubtargetInfo &STI,
46 MCContext &Ctx) {
47 return new VEDisassembler(STI, Ctx);
48}
49
50extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeVEDisassembler() {
51 // Register the disassembler.
52 TargetRegistry::RegisterMCDisassembler(getTheVETarget(),
53 createVEDisassembler);
54}
55
56static 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
68static 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
80static 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
92static 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
98static 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
108static 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
113static const unsigned VM512RegDecoderTable[] = {VE::VMP0, VE::VMP1, VE::VMP2,
114 VE::VMP3, VE::VMP4, VE::VMP5,
115 VE::VMP6, VE::VMP7};
116
117static 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
127static 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
137static 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
147static 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
157static 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
167static 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
181static 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
191static 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
201static 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
213static DecodeStatus DecodeASX(MCInst &Inst, uint64_t insn, uint64_t Address,
214 const MCDisassembler *Decoder);
215static DecodeStatus DecodeLoadI32(MCInst &Inst, uint64_t insn, uint64_t Address,
216 const MCDisassembler *Decoder);
217static DecodeStatus DecodeStoreI32(MCInst &Inst, uint64_t insn,
218 uint64_t Address,
219 const MCDisassembler *Decoder);
220static DecodeStatus DecodeLoadI64(MCInst &Inst, uint64_t insn, uint64_t Address,
221 const MCDisassembler *Decoder);
222static DecodeStatus DecodeStoreI64(MCInst &Inst, uint64_t insn,
223 uint64_t Address,
224 const MCDisassembler *Decoder);
225static DecodeStatus DecodeLoadF32(MCInst &Inst, uint64_t insn, uint64_t Address,
226 const MCDisassembler *Decoder);
227static DecodeStatus DecodeStoreF32(MCInst &Inst, uint64_t insn,
228 uint64_t Address,
229 const MCDisassembler *Decoder);
230static DecodeStatus DecodeLoadASI64(MCInst &Inst, uint64_t insn,
231 uint64_t Address,
232 const MCDisassembler *Decoder);
233static DecodeStatus DecodeStoreASI64(MCInst &Inst, uint64_t insn,
234 uint64_t Address,
235 const MCDisassembler *Decoder);
236static DecodeStatus DecodeTS1AMI64(MCInst &Inst, uint64_t insn,
237 uint64_t Address,
238 const MCDisassembler *Decoder);
239static DecodeStatus DecodeTS1AMI32(MCInst &Inst, uint64_t insn,
240 uint64_t Address,
241 const MCDisassembler *Decoder);
242static DecodeStatus DecodeCASI64(MCInst &Inst, uint64_t insn, uint64_t Address,
243 const MCDisassembler *Decoder);
244static DecodeStatus DecodeCASI32(MCInst &Inst, uint64_t insn, uint64_t Address,
245 const MCDisassembler *Decoder);
246static DecodeStatus DecodeCall(MCInst &Inst, uint64_t insn, uint64_t Address,
247 const MCDisassembler *Decoder);
248static DecodeStatus DecodeSIMM7(MCInst &Inst, uint64_t insn, uint64_t Address,
249 const MCDisassembler *Decoder);
250static DecodeStatus DecodeSIMM32(MCInst &Inst, uint64_t insn, uint64_t Address,
251 const MCDisassembler *Decoder);
252static DecodeStatus DecodeCCOperand(MCInst &Inst, uint64_t insn,
253 uint64_t Address,
254 const MCDisassembler *Decoder);
255static DecodeStatus DecodeRDOperand(MCInst &Inst, uint64_t insn,
256 uint64_t Address,
257 const MCDisassembler *Decoder);
258static DecodeStatus DecodeBranchCondition(MCInst &Inst, uint64_t insn,
259 uint64_t Address,
260 const MCDisassembler *Decoder);
261static 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.
268static 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
290DecodeStatus 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
313typedef DecodeStatus (*DecodeFunc)(MCInst &MI, unsigned RegNo, uint64_t Address,
314 const MCDisassembler *Decoder);
315
316static 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
349static 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
371static 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
395static 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
419static 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
424static 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
430static 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
435static 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
441static 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
446static 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
452static 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
459static 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
466static 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
504static 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
510static 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
516static 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
522static 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
528static 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
533static 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
540static 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
547static 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.
584static 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.
591static 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.
598static 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
622static 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}
Insn
SmallVector< AArch64_IMM::ImmInsnModel, 4 > Insn
Definition: AArch64MIPeepholeOpt.cpp:163
isLoad
static bool isLoad(int Opcode)
Definition: ARCInstrInfo.cpp:53
LLVM_EXTERNAL_VISIBILITY
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:131
Size
uint64_t Size
Definition: ELFObjHandler.cpp:81
MI
IRTranslator LLVM IR MI
Definition: IRTranslator.cpp:113
DecodeBranchCondition
static DecodeStatus DecodeBranchCondition(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:598
DecodeV64RegisterClass
static DecodeStatus DecodeV64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:167
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
DecodeStatus
MCDisassembler::DecodeStatus DecodeStatus
Definition: VEDisassembler.cpp:27
DecodeF128RegisterClass
static DecodeStatus DecodeF128RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:157
DecodeRDOperand
static DecodeStatus DecodeRDOperand(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:591
DecodeLoadI64
static DecodeStatus DecodeLoadI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:430
DecodeCASI32
static DecodeStatus DecodeCASI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:522
DecodeTS1AMI64
static DecodeStatus DecodeTS1AMI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:504
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
DecodeLoadF32
static DecodeStatus DecodeLoadF32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:441
DecodeBranchConditionAlways
static DecodeStatus DecodeBranchConditionAlways(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:622
DecodeStoreI64
static DecodeStatus DecodeStoreI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:435
DecodeLoadI32
static DecodeStatus DecodeLoadI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:419
I32RegDecoderTable
static const unsigned I32RegDecoderTable[]
Definition: VEDisassembler.cpp:56
DecodeFunc
DecodeStatus(* DecodeFunc)(MCInst &MI, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:313
F128RegDecoderTable
static const unsigned F128RegDecoderTable[]
Definition: VEDisassembler.cpp:92
DecodeI64RegisterClass
static DecodeStatus DecodeI64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:137
isIntegerBCKind
static bool isIntegerBCKind(MCInst &MI)
Definition: VEDisassembler.cpp:547
DecodeLoadASI64
static DecodeStatus DecodeLoadASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:452
DecodeSIMM7
static DecodeStatus DecodeSIMM7(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:533
V64RegDecoderTable
static const unsigned V64RegDecoderTable[]
Definition: VEDisassembler.cpp:98
I64RegDecoderTable
static const unsigned I64RegDecoderTable[]
Definition: VEDisassembler.cpp:68
DecodeTS1AMI32
static DecodeStatus DecodeTS1AMI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:510
DecodeStoreI32
static DecodeStatus DecodeStoreI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:424
DecodeStoreF32
static DecodeStatus DecodeStoreF32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:446
F32RegDecoderTable
static const unsigned F32RegDecoderTable[]
Definition: VEDisassembler.cpp:80
BCRm_kind
#define BCRm_kind(NAME)
DecodeASX
static DecodeStatus DecodeASX(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:316
DecodeAS
static DecodeStatus DecodeAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:349
VM512RegDecoderTable
static const unsigned VM512RegDecoderTable[]
Definition: VEDisassembler.cpp:113
BCm_kind
#define BCm_kind(NAME)
DecodeVM512RegisterClass
static DecodeStatus DecodeVM512RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:191
DecodeCall
static DecodeStatus DecodeCall(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:528
DecodeStoreASI64
static DecodeStatus DecodeStoreASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:459
DecodeI32RegisterClass
static DecodeStatus DecodeI32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:127
DecodeF32RegisterClass
static DecodeStatus DecodeF32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:147
DecodeMem
static DecodeStatus DecodeMem(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isLoad, DecodeFunc DecodeSX)
Definition: VEDisassembler.cpp:371
DecodeVMRegisterClass
static DecodeStatus DecodeVMRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:181
DecodeMemAS
static DecodeStatus DecodeMemAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isLoad, DecodeFunc DecodeSX)
Definition: VEDisassembler.cpp:395
LLVMInitializeVEDisassembler
LLVM_EXTERNAL_VISIBILITY void LLVMInitializeVEDisassembler()
Definition: VEDisassembler.cpp:50
DecodeCASI64
static DecodeStatus DecodeCASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:516
DecodeMISCRegisterClass
static DecodeStatus DecodeMISCRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:201
DecodeCCOperand
static DecodeStatus DecodeCCOperand(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:584
VMRegDecoderTable
static const unsigned VMRegDecoderTable[]
Definition: VEDisassembler.cpp:108
createVEDisassembler
static MCDisassembler * createVEDisassembler(const Target &T, const MCSubtargetInfo &STI, MCContext &Ctx)
Definition: VEDisassembler.cpp:44
DecodeSIMM32
static DecodeStatus DecodeSIMM32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder)
Definition: VEDisassembler.cpp:540
MiscRegDecoderTable
static const unsigned MiscRegDecoderTable[]
Definition: VEDisassembler.cpp:117
llvm::ArrayRef
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition: ArrayRef.h:41
llvm::ArrayRef::size
size_t size() const
size - Get the array size.
Definition: ArrayRef.h:165
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:83
llvm::MCDisassembler
Superclass for all disassemblers.
Definition: MCDisassembler.h:84
llvm::MCDisassembler::DecodeStatus
DecodeStatus
Ternary decode status.
Definition: MCDisassembler.h:108
llvm::MCDisassembler::getInstruction
virtual DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size, ArrayRef< uint8_t > Bytes, uint64_t Address, raw_ostream &CStream) const =0
Returns the disassembly of a single instruction.
llvm::MCInst
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:184
llvm::MCInst::addOperand
void addOperand(const MCOperand Op)
Definition: MCInst.h:210
llvm::MCOperand::createReg
static MCOperand createReg(unsigned Reg)
Definition: MCInst.h:134
llvm::MCOperand::createImm
static MCOperand createImm(int64_t Val)
Definition: MCInst.h:141
llvm::MCSubtargetInfo
Generic base class for all target subtargets.
Definition: MCSubtargetInfo.h:76
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:144
llvm::raw_ostream
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
uint64_t
llvm::ms_demangle::QualifierMangleMode::Result
@ Result
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::getTheVETarget
Target & getTheVETarget()
Definition: VETargetInfo.cpp:14
llvm::VEValToCondCode
static VECC::CondCode VEValToCondCode(unsigned Val, bool IsInteger)
Definition: VE.h:205
llvm::VEValToRD
static VERD::RoundingMode VEValToRD(unsigned Val)
Definition: VE.h:309
llvm::TargetRegistry::RegisterMCDisassembler
static void RegisterMCDisassembler(Target &T, Target::MCDisassemblerCtorTy Fn)
RegisterMCDisassembler - Register a MCDisassembler implementation for the given target.
Definition: TargetRegistry.h:878
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