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EmulateInstructionARM.h
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1//===-- EmulateInstructionARM.h ---------------------------------*- 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#ifndef LLDB_SOURCE_PLUGINS_INSTRUCTION_ARM_EMULATEINSTRUCTIONARM_H
10#define LLDB_SOURCE_PLUGINS_INSTRUCTION_ARM_EMULATEINSTRUCTIONARM_H
11
14#include "lldb/Utility/Status.h"
15#include <optional>
16
17namespace lldb_private {
18
19// ITSession - Keep track of the IT Block progression.
20class ITSession {
21public:
22 ITSession() = default;
23 ~ITSession() = default;
24
25 // InitIT - Initializes ITCounter/ITState.
26 bool InitIT(uint32_t bits7_0);
27
28 // ITAdvance - Updates ITCounter/ITState as IT Block progresses.
29 void ITAdvance();
30
31 // InITBlock - Returns true if we're inside an IT Block.
32 bool InITBlock();
33
34 // LastInITBlock - Returns true if we're the last instruction inside an IT
35 // Block.
36 bool LastInITBlock();
37
38 // GetCond - Gets condition bits for the current thumb instruction.
39 uint32_t GetCond();
40
41private:
42 uint32_t ITCounter = 0; // Possible values: 0, 1, 2, 3, 4.
43 uint32_t ITState = 0; // A2.5.2 Consists of IT[7:5] and IT[4:0] initially.
44};
45
47public:
59 };
60
61 static void Initialize();
62
63 static void Terminate();
64
65 static llvm::StringRef GetPluginNameStatic() { return "arm"; }
66
67 static llvm::StringRef GetPluginDescriptionStatic();
68
71
72 static bool
74 switch (inst_type) {
78 return true;
79
81 return false;
82 }
83 return false;
84 }
85
86 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
87
88 bool SetTargetTriple(const ArchSpec &arch) override;
89
91
95 m_ignore_conditions(false) {
96 SetArchitecture(arch);
97 }
98
99 // EmulateInstructionARM (const ArchSpec &arch,
100 // bool ignore_conditions,
101 // void *baton,
102 // ReadMemory read_mem_callback,
103 // WriteMemory write_mem_callback,
104 // ReadRegister read_reg_callback,
105 // WriteRegister write_reg_callback) :
106 // EmulateInstruction (arch,
107 // ignore_conditions,
108 // baton,
109 // read_mem_callback,
110 // write_mem_callback,
111 // read_reg_callback,
112 // write_reg_callback),
113 // m_arm_isa (0),
114 // m_opcode_mode (eModeInvalid),
115 // m_opcode_cpsr (0),
116 // m_it_session ()
117 // {
118 // }
119
122 }
123
124 virtual bool SetArchitecture(const ArchSpec &arch);
125
126 bool ReadInstruction() override;
127
128 bool SetInstruction(const Opcode &insn_opcode, const Address &inst_addr,
129 Target *target) override;
130
131 bool EvaluateInstruction(uint32_t evaluate_options) override;
132
134
135 bool TestEmulation(Stream &out_stream, ArchSpec &arch,
136 OptionValueDictionary *test_data) override;
137
138 std::optional<RegisterInfo> GetRegisterInfo(lldb::RegisterKind reg_kind,
139 uint32_t reg_num) override;
140
141 bool CreateFunctionEntryUnwind(UnwindPlan &unwind_plan) override;
142
143 uint32_t ArchVersion();
144
145 bool ConditionPassed(const uint32_t opcode);
146
147 uint32_t CurrentCond(const uint32_t opcode);
148
149 // InITBlock - Returns true if we're in Thumb mode and inside an IT Block.
150 bool InITBlock();
151
152 // LastInITBlock - Returns true if we're in Thumb mode and the last
153 // instruction inside an IT Block.
154 bool LastInITBlock();
155
156 bool BadMode(uint32_t mode);
157
159
160 void CPSRWriteByInstr(uint32_t value, uint32_t bytemask,
161 bool affect_execstate);
162
163 bool BranchWritePC(const Context &context, uint32_t addr);
164
165 bool BXWritePC(Context &context, uint32_t addr);
166
167 bool LoadWritePC(Context &context, uint32_t addr);
168
169 bool ALUWritePC(Context &context, uint32_t addr);
170
172
173 bool SelectInstrSet(Mode arm_or_thumb);
174
175 bool WriteBits32Unknown(int n);
176
178
179 bool UnalignedSupport();
180
181 typedef struct {
182 uint32_t result;
183 uint8_t carry_out;
184 uint8_t overflow;
186
187 AddWithCarryResult AddWithCarry(uint32_t x, uint32_t y, uint8_t carry_in);
188
189 // Helper method to read the content of an ARM core register.
190 uint32_t ReadCoreReg(uint32_t regnum, bool *success);
191
192 // See A8.6.96 MOV (immediate) Operation.
193 // Default arguments are specified for carry and overflow parameters, which
194 // means
195 // not to update the respective flags even if setflags is true.
196 bool WriteCoreRegOptionalFlags(Context &context, const uint32_t result,
197 const uint32_t Rd, bool setflags,
198 const uint32_t carry = ~0u,
199 const uint32_t overflow = ~0u);
200
201 bool WriteCoreReg(Context &context, const uint32_t result,
202 const uint32_t Rd) {
203 // Don't set the flags.
204 return WriteCoreRegOptionalFlags(context, result, Rd, false);
205 }
206
207 // See A8.6.35 CMP (immediate) Operation.
208 // Default arguments are specified for carry and overflow parameters, which
209 // means
210 // not to update the respective flags.
211 bool WriteFlags(Context &context, const uint32_t result,
212 const uint32_t carry = ~0u, const uint32_t overflow = ~0u);
213
214 inline uint64_t MemARead(EmulateInstruction::Context &context,
215 lldb::addr_t address, uint32_t size,
216 uint64_t fail_value, bool *success_ptr) {
217 // This is a stub function corresponding to "MemA[]" in the ARM manual
218 // pseudocode, for
219 // aligned reads from memory. Since we are not trying to write a full
220 // hardware simulator, and since
221 // we are running in User mode (rather than Kernel mode) and therefore won't
222 // have access to many of the
223 // system registers we would need in order to fully implement this function,
224 // we will just call
225 // ReadMemoryUnsigned from here. In the future, if we decide we do need to
226 // do more faithful emulation of
227 // the hardware, we can update this function appropriately.
228
229 return ReadMemoryUnsigned(context, address, size, fail_value, success_ptr);
230 }
231
233 lldb::addr_t address, uint64_t data_val, uint32_t size)
234
235 {
236 // This is a stub function corresponding to "MemA[]" in the ARM manual
237 // pseudocode, for
238 // aligned writes to memory. Since we are not trying to write a full
239 // hardware simulator, and since
240 // we are running in User mode (rather than Kernel mode) and therefore won't
241 // have access to many of the
242 // system registers we would need in order to fully implement this function,
243 // we will just call
244 // WriteMemoryUnsigned from here. In the future, if we decide we do need to
245 // do more faithful emulation of
246 // the hardware, we can update this function appropriately.
247
248 return WriteMemoryUnsigned(context, address, data_val, size);
249 }
250
251 inline uint64_t MemURead(EmulateInstruction::Context &context,
252 lldb::addr_t address, uint32_t size,
253 uint64_t fail_value, bool *success_ptr) {
254 // This is a stub function corresponding to "MemU[]" in the ARM manual
255 // pseudocode, for
256 // unaligned reads from memory. Since we are not trying to write a full
257 // hardware simulator, and since
258 // we are running in User mode (rather than Kernel mode) and therefore won't
259 // have access to many of the
260 // system registers we would need in order to fully implement this function,
261 // we will just call
262 // ReadMemoryUnsigned from here. In the future, if we decide we do need to
263 // do more faithful emulation of
264 // the hardware, we can update this function appropriately.
265
266 return ReadMemoryUnsigned(context, address, size, fail_value, success_ptr);
267 }
268
270 lldb::addr_t address, uint64_t data_val, uint32_t size)
271
272 {
273 // This is a stub function corresponding to "MemU[]" in the ARM manual
274 // pseudocode, for
275 // unaligned writes to memory. Since we are not trying to write a full
276 // hardware simulator, and since
277 // we are running in User mode (rather than Kernel mode) and therefore won't
278 // have access to many of the
279 // system registers we would need in order to fully implement this function,
280 // we will just call
281 // WriteMemoryUnsigned from here. In the future, if we decide we do need to
282 // do more faithful emulation of
283 // the hardware, we can update this function appropriately.
284
285 return WriteMemoryUnsigned(context, address, data_val, size);
286 }
287
288protected:
289 // Typedef for the callback function used during the emulation.
290 // Pass along (ARMEncoding)encoding as the callback data.
292
293 typedef struct {
294 uint32_t mask;
295 uint32_t value;
296 uint32_t variants;
298 uint32_t vfp_variants;
300 bool (EmulateInstructionARM::*callback)(
301 const uint32_t opcode,
303 const char *name;
304 } ARMOpcode;
305
306 uint32_t GetFramePointerRegisterNumber() const;
307
308 uint32_t GetFramePointerDWARFRegisterNumber() const;
309
310 static ARMOpcode *GetARMOpcodeForInstruction(const uint32_t opcode,
311 uint32_t isa_mask);
312
313 static ARMOpcode *GetThumbOpcodeForInstruction(const uint32_t opcode,
314 uint32_t isa_mask);
315
316 // A8.6.123 PUSH
317 bool EmulatePUSH(const uint32_t opcode, const ARMEncoding encoding);
318
319 // A8.6.122 POP
320 bool EmulatePOP(const uint32_t opcode, const ARMEncoding encoding);
321
322 // A8.6.8 ADD (SP plus immediate)
323 bool EmulateADDRdSPImm(const uint32_t opcode, const ARMEncoding encoding);
324
325 // A8.6.97 MOV (register) -- Rd == r7|ip and Rm == sp
326 bool EmulateMOVRdSP(const uint32_t opcode, const ARMEncoding encoding);
327
328 // A8.6.97 MOV (register) -- move from r8-r15 to r0-r7
329 bool EmulateMOVLowHigh(const uint32_t opcode, const ARMEncoding encoding);
330
331 // A8.6.59 LDR (literal)
332 bool EmulateLDRRtPCRelative(const uint32_t opcode,
333 const ARMEncoding encoding);
334
335 // A8.6.8 ADD (SP plus immediate)
336 bool EmulateADDSPImm(const uint32_t opcode, const ARMEncoding encoding);
337
338 // A8.6.9 ADD (SP plus register)
339 bool EmulateADDSPRm(const uint32_t opcode, const ARMEncoding encoding);
340
341 // A8.6.23 BL, BLX (immediate)
342 bool EmulateBLXImmediate(const uint32_t opcode, const ARMEncoding encoding);
343
344 // A8.6.24 BLX (register)
345 bool EmulateBLXRm(const uint32_t opcode, const ARMEncoding encoding);
346
347 // A8.6.25 BX
348 bool EmulateBXRm(const uint32_t opcode, const ARMEncoding encoding);
349
350 // A8.6.26 BXJ
351 bool EmulateBXJRm(const uint32_t opcode, const ARMEncoding encoding);
352
353 // A8.6.212 SUB (immediate, ARM) -- Rd == r7 and Rm == ip
354 bool EmulateSUBR7IPImm(const uint32_t opcode, const ARMEncoding encoding);
355
356 // A8.6.215 SUB (SP minus immediate) -- Rd == ip
357 bool EmulateSUBIPSPImm(const uint32_t opcode, const ARMEncoding encoding);
358
359 // A8.6.215 SUB (SP minus immediate)
360 bool EmulateSUBSPImm(const uint32_t opcode, const ARMEncoding encoding);
361
362 // A8.6.216 SUB (SP minus register)
363 bool EmulateSUBSPReg(const uint32_t opcode, const ARMEncoding encoding);
364
365 // A8.6.194 STR (immediate, ARM) -- Rn == sp
366 bool EmulateSTRRtSP(const uint32_t opcode, const ARMEncoding encoding);
367
368 // A8.6.355 VPUSH
369 bool EmulateVPUSH(const uint32_t opcode, const ARMEncoding encoding);
370
371 // A8.6.354 VPOP
372 bool EmulateVPOP(const uint32_t opcode, const ARMEncoding encoding);
373
374 // A8.6.218 SVC (previously SWI)
375 bool EmulateSVC(const uint32_t opcode, const ARMEncoding encoding);
376
377 // A8.6.50 IT
378 bool EmulateIT(const uint32_t opcode, const ARMEncoding encoding);
379
380 // NOP
381 bool EmulateNop(const uint32_t opcode, const ARMEncoding encoding);
382
383 // A8.6.16 B
384 bool EmulateB(const uint32_t opcode, const ARMEncoding encoding);
385
386 // A8.6.27 CBNZ, CBZ
387 bool EmulateCB(const uint32_t opcode, const ARMEncoding encoding);
388
389 // A8.6.226 TBB, TBH
390 bool EmulateTB(const uint32_t opcode, const ARMEncoding encoding);
391
392 // A8.6.4 ADD (immediate, Thumb)
393 bool EmulateADDImmThumb(const uint32_t opcode, const ARMEncoding encoding);
394
395 // A8.6.5 ADD (immediate, ARM)
396 bool EmulateADDImmARM(const uint32_t opcode, const ARMEncoding encoding);
397
398 // A8.6.6 ADD (register)
399 bool EmulateADDReg(const uint32_t opcode, const ARMEncoding encoding);
400
401 // A8.6.7 ADD (register-shifted register)
402 bool EmulateADDRegShift(const uint32_t opcode, const ARMEncoding encoding);
403
404 // A8.6.97 MOV (register)
405 bool EmulateMOVRdRm(const uint32_t opcode, const ARMEncoding encoding);
406
407 // A8.6.96 MOV (immediate)
408 bool EmulateMOVRdImm(const uint32_t opcode, const ARMEncoding encoding);
409
410 // A8.6.35 CMP (immediate)
411 bool EmulateCMPImm(const uint32_t opcode, const ARMEncoding encoding);
412
413 // A8.6.36 CMP (register)
414 bool EmulateCMPReg(const uint32_t opcode, const ARMEncoding encoding);
415
416 // A8.6.14 ASR (immediate)
417 bool EmulateASRImm(const uint32_t opcode, const ARMEncoding encoding);
418
419 // A8.6.15 ASR (register)
420 bool EmulateASRReg(const uint32_t opcode, const ARMEncoding encoding);
421
422 // A8.6.88 LSL (immediate)
423 bool EmulateLSLImm(const uint32_t opcode, const ARMEncoding encoding);
424
425 // A8.6.89 LSL (register)
426 bool EmulateLSLReg(const uint32_t opcode, const ARMEncoding encoding);
427
428 // A8.6.90 LSR (immediate)
429 bool EmulateLSRImm(const uint32_t opcode, const ARMEncoding encoding);
430
431 // A8.6.91 LSR (register)
432 bool EmulateLSRReg(const uint32_t opcode, const ARMEncoding encoding);
433
434 // A8.6.139 ROR (immediate)
435 bool EmulateRORImm(const uint32_t opcode, const ARMEncoding encoding);
436
437 // A8.6.140 ROR (register)
438 bool EmulateRORReg(const uint32_t opcode, const ARMEncoding encoding);
439
440 // A8.6.141 RRX
441 bool EmulateRRX(const uint32_t opcode, const ARMEncoding encoding);
442
443 // Helper method for ASR, LSL, LSR, ROR (immediate), and RRX
444 bool EmulateShiftImm(const uint32_t opcode, const ARMEncoding encoding,
445 ARM_ShifterType shift_type);
446
447 // Helper method for ASR, LSL, LSR, and ROR (register)
448 bool EmulateShiftReg(const uint32_t opcode, const ARMEncoding encoding,
449 ARM_ShifterType shift_type);
450
451 // LOAD FUNCTIONS
452
453 // A8.6.53 LDM/LDMIA/LDMFD
454 bool EmulateLDM(const uint32_t opcode, const ARMEncoding encoding);
455
456 // A8.6.54 LDMDA/LDMFA
457 bool EmulateLDMDA(const uint32_t opcode, const ARMEncoding encoding);
458
459 // A8.6.55 LDMDB/LDMEA
460 bool EmulateLDMDB(const uint32_t opcode, const ARMEncoding encoding);
461
462 // A8.6.56 LDMIB/LDMED
463 bool EmulateLDMIB(const uint32_t opcode, const ARMEncoding encoding);
464
465 // A8.6.57 LDR (immediate, Thumb) -- Encoding T1
466 bool EmulateLDRRtRnImm(const uint32_t opcode, const ARMEncoding encoding);
467
468 // A8.6.58 LDR (immediate, ARM) - Encoding A1
469 bool EmulateLDRImmediateARM(const uint32_t opcode,
470 const ARMEncoding encoding);
471
472 // A8.6.59 LDR (literal)
473 bool EmulateLDRLiteral(const uint32_t, const ARMEncoding encoding);
474
475 // A8.6.60 LDR (register) - Encoding T1, T2, A1
476 bool EmulateLDRRegister(const uint32_t opcode, const ARMEncoding encoding);
477
478 // A8.6.61 LDRB (immediate, Thumb) - Encoding T1, T2, T3
479 bool EmulateLDRBImmediate(const uint32_t opcode, const ARMEncoding encoding);
480
481 // A8.6.62 LDRB (immediate, ARM)
482 bool EmulateLDRBImmediateARM(const uint32_t opcode,
483 const ARMEncoding encoding);
484
485 // A8.6.63 LDRB (literal) - Encoding T1, A1
486 bool EmulateLDRBLiteral(const uint32_t opcode, const ARMEncoding encoding);
487
488 // A8.6.64 LDRB (register) - Encoding T1, T2, A1
489 bool EmulateLDRBRegister(const uint32_t opcode, const ARMEncoding encoding);
490
491 // A8.6.65 LDRBT
492 bool EmulateLDRBT(const uint32_t opcode, const ARMEncoding encoding);
493
494 // A8.6.66 LDRD (immediate)
495 bool EmulateLDRDImmediate(const uint32_t opcode, const ARMEncoding encoding);
496
497 // A8.6.67
498 bool EmulateLDRDLiteral(const uint32_t opcode, const ARMEncoding encoding);
499
500 // A8.6.68 LDRD (register)
501 bool EmulateLDRDRegister(const uint32_t opcode, const ARMEncoding encoding);
502
503 // A8.6.69 LDREX
504 bool EmulateLDREX(const uint32_t opcode, const ARMEncoding encoding);
505
506 // A8.6.70 LDREXB
507 bool EmulateLDREXB(const uint32_t opcode, const ARMEncoding encoding);
508
509 // A8.6.71 LDREXD
510 bool EmulateLDREXD(const uint32_t opcode, const ARMEncoding encoding);
511
512 // A8.6.72 LDREXH
513 bool EmulateLDREXH(const uint32_t opcode, const ARMEncoding encoding);
514
515 // A8.6.73 LDRH (immediate, Thumb) - Encoding T1, T2, T3
516 bool EmulateLDRHImmediate(const uint32_t opcode, const ARMEncoding encoding);
517
518 // A8.6.74 LDRS (immediate, ARM)
519 bool EmulateLDRHImmediateARM(const uint32_t opcode,
520 const ARMEncoding encoding);
521
522 // A8.6.75 LDRH (literal) - Encoding T1, A1
523 bool EmulateLDRHLiteral(const uint32_t opcode, const ARMEncoding encoding);
524
525 // A8.6.76 LDRH (register) - Encoding T1, T2, A1
526 bool EmulateLDRHRegister(const uint32_t opcode, const ARMEncoding encoding);
527
528 // A8.6.77 LDRHT
529 bool EmulateLDRHT(const uint32_t opcode, const ARMEncoding encoding);
530
531 // A8.6.78 LDRSB (immediate) - Encoding T1, T2, A1
532 bool EmulateLDRSBImmediate(const uint32_t opcode, const ARMEncoding encoding);
533
534 // A8.6.79 LDRSB (literal) - Encoding T1, A1
535 bool EmulateLDRSBLiteral(const uint32_t opcode, const ARMEncoding encoding);
536
537 // A8.6.80 LDRSB (register) - Encoding T1, T2, A1
538 bool EmulateLDRSBRegister(const uint32_t opcode, const ARMEncoding encoding);
539
540 // A8.6.81 LDRSBT
541 bool EmulateLDRSBT(const uint32_t opcode, const ARMEncoding encoding);
542
543 // A8.6.82 LDRSH (immediate) - Encoding T1, T2, A1
544 bool EmulateLDRSHImmediate(const uint32_t opcode, const ARMEncoding encoding);
545
546 // A8.6.83 LDRSH (literal) - Encoding T1, A1
547 bool EmulateLDRSHLiteral(const uint32_t opcode, const ARMEncoding encoding);
548
549 // A8.6.84 LDRSH (register) - Encoding T1, T2, A1
550 bool EmulateLDRSHRegister(const uint32_t opcode, const ARMEncoding encoding);
551
552 // A8.6.85 LDRSHT
553 bool EmulateLDRSHT(const uint32_t opcode, const ARMEncoding encoding);
554
555 // A8.6.86
556 bool EmulateLDRT(const uint32_t opcode, const ARMEncoding encoding);
557
558 // STORE FUNCTIONS
559
560 // A8.6.189 STM/STMIA/STMEA
561 bool EmulateSTM(const uint32_t opcode, const ARMEncoding encoding);
562
563 // A8.6.190 STMDA/STMED
564 bool EmulateSTMDA(const uint32_t opcode, const ARMEncoding encoding);
565
566 // A8.6.191 STMDB/STMFD
567 bool EmulateSTMDB(const uint32_t opcode, const ARMEncoding encoding);
568
569 // A8.6.192 STMIB/STMFA
570 bool EmulateSTMIB(const uint32_t opcode, const ARMEncoding encoding);
571
572 // A8.6.193 STR (immediate, Thumb)
573 bool EmulateSTRThumb(const uint32_t opcode, const ARMEncoding encoding);
574
575 // A8.6.194 STR (immediate, ARM)
576 bool EmulateSTRImmARM(const uint32_t opcode, const ARMEncoding encoding);
577
578 // A8.6.195 STR (register)
579 bool EmulateSTRRegister(const uint32_t opcode, const ARMEncoding encoding);
580
581 // A8.6.196 STRB (immediate, Thumb)
582 bool EmulateSTRBThumb(const uint32_t opcode, const ARMEncoding encoding);
583
584 // A8.6.197 STRB (immediate, ARM)
585 bool EmulateSTRBImmARM(const uint32_t opcode, const ARMEncoding encoding);
586
587 // A8.6.198 STRB (register)
588 bool EmulateSTRBReg(const uint32_t opcode, const ARMEncoding encoding);
589
590 // A8.6.199 STRBT
591 bool EmulateSTRBT(const uint32_t opcode, const ARMEncoding encoding);
592
593 // A8.6.200 STRD (immediate)
594 bool EmulateSTRDImm(const uint32_t opcode, const ARMEncoding encoding);
595
596 // A8.6.201 STRD (register)
597 bool EmulateSTRDReg(const uint32_t opcode, const ARMEncoding encoding);
598
599 // A8.6.202 STREX
600 bool EmulateSTREX(const uint32_t opcode, const ARMEncoding encoding);
601
602 // A8.6.203 STREXB
603 bool EmulateSTREXB(const uint32_t opcode, const ARMEncoding encoding);
604
605 // A8.6.204 STREXD
606 bool EmulateSTREXD(const uint32_t opcode, const ARMEncoding encoding);
607
608 // A8.6.205 STREXH
609 bool EmulateSTREXH(const uint32_t opcode, const ARMEncoding encoding);
610
611 // A8.6.206 STRH (immediate, Thumb)
612 bool EmulateSTRHImmThumb(const uint32_t opcode, const ARMEncoding encoding);
613
614 // A8.6.207 STRH (immediate, ARM)
615 bool EmulateSTRHImmARM(const uint32_t opcode, const ARMEncoding encoding);
616
617 // A8.6.208 STRH (register)
618 bool EmulateSTRHRegister(const uint32_t opcode, const ARMEncoding encoding);
619
620 // A8.6.209 STRHT
621 bool EmulateSTRHT(const uint32_t opcode, const ARMEncoding encoding);
622
623 // A8.6.210 STRT
624 bool EmulateSTRT(const uint32_t opcode, const ARMEncoding encoding);
625
626 // A8.6.1 ADC (immediate)
627 bool EmulateADCImm(const uint32_t opcode, const ARMEncoding encoding);
628
629 // A8.6.2 ADC (Register)
630 bool EmulateADCReg(const uint32_t opcode, const ARMEncoding encoding);
631
632 // A8.6.10 ADR
633 bool EmulateADR(const uint32_t opcode, const ARMEncoding encoding);
634
635 // A8.6.11 AND (immediate)
636 bool EmulateANDImm(const uint32_t opcode, const ARMEncoding encoding);
637
638 // A8.6.12 AND (register)
639 bool EmulateANDReg(const uint32_t opcode, const ARMEncoding encoding);
640
641 // A8.6.19 BIC (immediate)
642 bool EmulateBICImm(const uint32_t opcode, const ARMEncoding encoding);
643
644 // A8.6.20 BIC (register)
645 bool EmulateBICReg(const uint32_t opcode, const ARMEncoding encoding);
646
647 // A8.6.26 BXJ
648 bool EmulateBXJ(const uint32_t opcode, const ARMEncoding encoding);
649
650 // A8.6.32 CMN (immediate)
651 bool EmulateCMNImm(const uint32_t opcode, const ARMEncoding encoding);
652
653 // A8.6.33 CMN (register)
654 bool EmulateCMNReg(const uint32_t opcode, const ARMEncoding encoding);
655
656 // A8.6.44 EOR (immediate)
657 bool EmulateEORImm(const uint32_t opcode, const ARMEncoding encoding);
658
659 // A8.6.45 EOR (register)
660 bool EmulateEORReg(const uint32_t opcode, const ARMEncoding encoding);
661
662 // A8.6.105 MUL
663 bool EmulateMUL(const uint32_t opcode, const ARMEncoding encoding);
664
665 // A8.6.106 MVN (immediate)
666 bool EmulateMVNImm(const uint32_t opcode, const ARMEncoding encoding);
667
668 // A8.6.107 MVN (register)
669 bool EmulateMVNReg(const uint32_t opcode, const ARMEncoding encoding);
670
671 // A8.6.113 ORR (immediate)
672 bool EmulateORRImm(const uint32_t opcode, const ARMEncoding encoding);
673
674 // A8.6.114 ORR (register)
675 bool EmulateORRReg(const uint32_t opcode, const ARMEncoding encoding);
676
677 // A8.6.117 PLD (immediate, literal) - Encoding T1, T2, T3, A1
678 bool EmulatePLDImmediate(const uint32_t opcode, const ARMEncoding encoding);
679
680 // A8.6.119 PLI (immediate,literal) - Encoding T3, A1
681 bool EmulatePLIImmediate(const uint32_t opcode, const ARMEncoding encoding);
682
683 // A8.6.120 PLI (register) - Encoding T1, A1
684 bool EmulatePLIRegister(const uint32_t opcode, const ARMEncoding encoding);
685
686 // A8.6.141 RSB (immediate)
687 bool EmulateRSBImm(const uint32_t opcode, const ARMEncoding encoding);
688
689 // A8.6.142 RSB (register)
690 bool EmulateRSBReg(const uint32_t opcode, const ARMEncoding encoding);
691
692 // A8.6.144 RSC (immediate)
693 bool EmulateRSCImm(const uint32_t opcode, const ARMEncoding encoding);
694
695 // A8.6.145 RSC (register)
696 bool EmulateRSCReg(const uint32_t opcode, const ARMEncoding encoding);
697
698 // A8.6.150 SBC (immediate)
699 bool EmulateSBCImm(const uint32_t opcode, const ARMEncoding encoding);
700
701 // A8.6.151 SBC (register)
702 bool EmulateSBCReg(const uint32_t opcode, const ARMEncoding encoding);
703
704 // A8.6.211 SUB (immediate, Thumb)
705 bool EmulateSUBImmThumb(const uint32_t opcode, const ARMEncoding encoding);
706
707 // A8.6.212 SUB (immediate, ARM)
708 bool EmulateSUBImmARM(const uint32_t opcode, const ARMEncoding encoding);
709
710 // A8.6.213 SUB (register)
711 bool EmulateSUBReg(const uint32_t opcode, const ARMEncoding encoding);
712
713 // A8.6.214 SUB (register-shifted register)
714 bool EmulateSUBRegShift(const uint32_t opcode, const ARMEncoding encoding);
715
716 // A8.6.222 SXTB - Encoding T1
717 bool EmulateSXTB(const uint32_t opcode, const ARMEncoding encoding);
718
719 // A8.6.224 SXTH - EncodingT1
720 bool EmulateSXTH(const uint32_t opcode, const ARMEncoding encoding);
721
722 // A8.6.227 TEQ (immediate) - Encoding A1
723 bool EmulateTEQImm(const uint32_t opcode, const ARMEncoding encoding);
724
725 // A8.6.228 TEQ (register) - Encoding A1
726 bool EmulateTEQReg(const uint32_t opcode, const ARMEncoding encoding);
727
728 // A8.6.230 TST (immediate) - Encoding A1
729 bool EmulateTSTImm(const uint32_t opcode, const ARMEncoding encoding);
730
731 // A8.6.231 TST (register) - Encoding T1, A1
732 bool EmulateTSTReg(const uint32_t opcode, const ARMEncoding encoding);
733
734 // A8.6.262 UXTB - Encoding T1
735 bool EmulateUXTB(const uint32_t opcode, const ARMEncoding encoding);
736
737 // A8.6.264 UXTH - Encoding T1
738 bool EmulateUXTH(const uint32_t opcode, const ARMEncoding encoding);
739
740 // B6.1.8 RFE
741 bool EmulateRFE(const uint32_t opcode, const ARMEncoding encoding);
742
743 // A8.6.319 VLDM
744 bool EmulateVLDM(const uint32_t opcode, const ARMEncoding encoding);
745
746 // A8.6.399 VSTM
747 bool EmulateVSTM(const uint32_t opcode, const ARMEncoding encoding);
748
749 // A8.6.307 VLD1 (multiple single elements)
750 bool EmulateVLD1Multiple(const uint32_t opcode, const ARMEncoding encoding);
751
752 // A8.6.308 VLD1 (single element to one lane)
753 bool EmulateVLD1Single(const uint32_t opcode, const ARMEncoding encoding);
754
755 // A8.6.309 VLD1 (single element to all lanes)
756 bool EmulateVLD1SingleAll(const uint32_t opcode, const ARMEncoding encoding);
757
758 // A8.6.391 VST1 (multiple single elements)
759 bool EmulateVST1Multiple(const uint32_t opcode, const ARMEncoding encoding);
760
761 // A8.6.392 VST1 (single element from one lane)
762 bool EmulateVST1Single(const uint32_t opcode, const ARMEncoding encoding);
763
764 // A8.6.317 VLDR
765 bool EmulateVLDR(const uint32_t opcode, const ARMEncoding encoding);
766
767 // A8.6.400 VSTR
768 bool EmulateVSTR(const uint32_t opcode, const ARMEncoding encoding);
769
770 // B6.2.13 SUBS PC, LR and related instructions
771 bool EmulateSUBSPcLrEtc(const uint32_t opcode, const ARMEncoding encoding);
772
773 uint32_t m_arm_isa;
776 uint32_t m_new_inst_cpsr; // This can get updated by the opcode.
779};
780
781} // namespace lldb_private
782
783#endif // LLDB_SOURCE_PLUGINS_INSTRUCTION_ARM_EMULATEINSTRUCTIONARM_H
A section + offset based address class.
Definition: Address.h:62
An architecture specification class.
Definition: ArchSpec.h:31
bool EmulateLDRDRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateRORReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRRtSP(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTREX(const uint32_t opcode, const ARMEncoding encoding)
static bool SupportsEmulatingInstructionsOfTypeStatic(InstructionType inst_type)
bool CreateFunctionEntryUnwind(UnwindPlan &unwind_plan) override
bool EmulateIT(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVSTM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLSLImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRBT(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateShiftImm(const uint32_t opcode, const ARMEncoding encoding, ARM_ShifterType shift_type)
bool EmulateLDRBT(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVLDR(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateTEQImm(const uint32_t opcode, const ARMEncoding encoding)
uint32_t CurrentCond(const uint32_t opcode)
bool EmulateB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADDRdSPImm(const uint32_t opcode, const ARMEncoding encoding)
bool WriteCoreReg(Context &context, const uint32_t result, const uint32_t Rd)
bool EmulateLDRSBRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRHImmARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRHImmediateARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRDImmediate(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDREXB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateEORImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRThumb(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateCB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRDReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulatePLIImmediate(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTMDA(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateCMPReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateTB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRSHT(const uint32_t opcode, const ARMEncoding encoding)
bool EvaluateInstruction(uint32_t evaluate_options) override
bool EmulateASRImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRSBT(const uint32_t opcode, const ARMEncoding encoding)
bool MemAWrite(EmulateInstruction::Context &context, lldb::addr_t address, uint64_t data_val, uint32_t size)
bool EmulateVLD1SingleAll(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateBLXRm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateCMNImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSVC(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateORRReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSUBImmARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateShiftReg(const uint32_t opcode, const ARMEncoding encoding, ARM_ShifterType shift_type)
bool EmulateSTREXD(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVLDM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRHRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateRSBReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRHLiteral(const uint32_t opcode, const ARMEncoding encoding)
std::optional< RegisterInfo > GetRegisterInfo(lldb::RegisterKind reg_kind, uint32_t reg_num) override
bool EmulateRORImm(const uint32_t opcode, const ARMEncoding encoding)
uint32_t ReadCoreReg(uint32_t regnum, bool *success)
bool EmulateLDRRtRnImm(const uint32_t opcode, const ARMEncoding encoding)
bool ALUWritePC(Context &context, uint32_t addr)
bool EmulateSTMDB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSUBImmThumb(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADCImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateBXRm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulatePLIRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTMIB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLSLReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRSBLiteral(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRBImmediate(const uint32_t opcode, const ARMEncoding encoding)
static llvm::StringRef GetPluginDescriptionStatic()
bool EmulateSTRHImmThumb(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDMIB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRDLiteral(const uint32_t opcode, const ARMEncoding encoding)
static ARMOpcode * GetARMOpcodeForInstruction(const uint32_t opcode, uint32_t isa_mask)
bool EmulateSTRBReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVLD1Single(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADDReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateORRImm(const uint32_t opcode, const ARMEncoding encoding)
void CPSRWriteByInstr(uint32_t value, uint32_t bytemask, bool affect_execstate)
bool EmulateTEQReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADDSPImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateBXJ(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADDImmThumb(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRT(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSBCImm(const uint32_t opcode, const ARMEncoding encoding)
bool LoadWritePC(Context &context, uint32_t addr)
bool EmulateMOVRdImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRHT(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateANDImm(const uint32_t opcode, const ARMEncoding encoding)
uint64_t MemURead(EmulateInstruction::Context &context, lldb::addr_t address, uint32_t size, uint64_t fail_value, bool *success_ptr)
bool EmulateSUBR7IPImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSXTH(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRHT(const uint32_t opcode, const ARMEncoding encoding)
bool BranchWritePC(const Context &context, uint32_t addr)
bool EmulateLDRT(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateTSTImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVPOP(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADDSPRm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDREXD(const uint32_t opcode, const ARMEncoding encoding)
bool MemUWrite(EmulateInstruction::Context &context, lldb::addr_t address, uint64_t data_val, uint32_t size)
bool EmulateSTRBImmARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateMVNImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVSTR(const uint32_t opcode, const ARMEncoding encoding)
llvm::StringRef GetPluginName() override
virtual bool SetArchitecture(const ArchSpec &arch)
uint64_t MemARead(EmulateInstruction::Context &context, lldb::addr_t address, uint32_t size, uint64_t fail_value, bool *success_ptr)
bool EmulateMVNReg(const uint32_t opcode, const ARMEncoding encoding)
static ARMOpcode * GetThumbOpcodeForInstruction(const uint32_t opcode, uint32_t isa_mask)
bool EmulateSTREXH(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSBCReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateMOVRdRm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVPUSH(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateEORReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLSRReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateNop(const uint32_t opcode, const ARMEncoding encoding)
bool EmulatePOP(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRSHImmediate(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateMOVRdSP(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRDImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateBICReg(const uint32_t opcode, const ARMEncoding encoding)
bool WriteFlags(Context &context, const uint32_t result, const uint32_t carry=~0u, const uint32_t overflow=~0u)
bool EmulateRSCImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLSRImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRImmARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateUXTH(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateCMNReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTREXB(const uint32_t opcode, const ARMEncoding encoding)
bool TestEmulation(Stream &out_stream, ArchSpec &arch, OptionValueDictionary *test_data) override
bool EmulateADR(const uint32_t opcode, const ARMEncoding encoding)
bool EmulatePUSH(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRBImmediateARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRHRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRRtPCRelative(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateASRReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRBLiteral(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVST1Single(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADCReg(const uint32_t opcode, const ARMEncoding encoding)
bool SupportsEmulatingInstructionsOfType(InstructionType inst_type) override
bool EmulateSUBSPcLrEtc(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVST1Multiple(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateRSCReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateBXJRm(const uint32_t opcode, const ARMEncoding encoding)
bool BXWritePC(Context &context, uint32_t addr)
bool EmulateMOVLowHigh(const uint32_t opcode, const ARMEncoding encoding)
bool SetTargetTriple(const ArchSpec &arch) override
bool EmulateSTM(const uint32_t opcode, const ARMEncoding encoding)
static llvm::StringRef GetPluginNameStatic()
bool WriteCoreRegOptionalFlags(Context &context, const uint32_t result, const uint32_t Rd, bool setflags, const uint32_t carry=~0u, const uint32_t overflow=~0u)
bool EmulateTSTReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRLiteral(const uint32_t, const ARMEncoding encoding)
bool EmulateLDRImmediateARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDREXH(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSUBSPReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADDRegShift(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateADDImmARM(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateRFE(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateMUL(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateCMPImm(const uint32_t opcode, const ARMEncoding encoding)
bool SetInstruction(const Opcode &insn_opcode, const Address &inst_addr, Target *target) override
bool EmulateANDReg(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRBRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateBICImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSUBRegShift(const uint32_t opcode, const ARMEncoding encoding)
static lldb_private::EmulateInstruction * CreateInstance(const lldb_private::ArchSpec &arch, InstructionType inst_type)
bool EmulateRRX(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSUBIPSPImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateUXTB(const uint32_t opcode, const ARMEncoding encoding)
InstructionCondition GetInstructionCondition() override
bool EmulateLDREX(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSUBSPImm(const uint32_t opcode, const ARMEncoding encoding)
AddWithCarryResult AddWithCarry(uint32_t x, uint32_t y, uint8_t carry_in)
bool EmulateRSBImm(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRSBImmediate(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDMDA(const uint32_t opcode, const ARMEncoding encoding)
bool EmulatePLDImmediate(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateVLD1Multiple(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSTRBThumb(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSXTB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateSUBReg(const uint32_t opcode, const ARMEncoding encoding)
bool WriteBits32UnknownToMemory(lldb::addr_t address)
bool EmulateLDRSHRegister(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRSHLiteral(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDRHImmediate(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateLDMDB(const uint32_t opcode, const ARMEncoding encoding)
bool EmulateBLXImmediate(const uint32_t opcode, const ARMEncoding encoding)
"lldb/Core/EmulateInstruction.h" A class that allows emulation of CPU opcodes.
bool WriteMemoryUnsigned(const Context &context, lldb::addr_t addr, uint64_t uval, size_t uval_byte_size)
uint64_t ReadMemoryUnsigned(const Context &context, lldb::addr_t addr, size_t byte_size, uint64_t fail_value, bool *success_ptr)
bool InitIT(uint32_t bits7_0)
A stream class that can stream formatted output to a file.
Definition: Stream.h:28
A class that represents a running process on the host machine.
Definition: SBAttachInfo.h:14
InstructionType
Instruction types.
uint64_t addr_t
Definition: lldb-types.h:81
RegisterKind
Register numbering types.