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EmulateInstructionMIPS64.cpp
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1//===-- EmulateInstructionMIPS64.cpp --------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "EmulateInstructionMIPS64.h"
10
11#include <cstdlib>
12#include <optional>
13
14#include "lldb/Core/Address.h"
15#include "lldb/Core/Opcode.h"
16#include "lldb/Core/PluginManager.h"
17#include "lldb/Host/PosixApi.h"
18#include "lldb/Symbol/UnwindPlan.h"
19#include "lldb/Utility/ArchSpec.h"
20#include "lldb/Utility/ConstString.h"
21#include "lldb/Utility/DataExtractor.h"
22#include "lldb/Utility/RegisterValue.h"
23#include "lldb/Utility/Stream.h"
24#include "llvm-c/Disassembler.h"
25#include "llvm/MC/MCAsmInfo.h"
26#include "llvm/MC/MCContext.h"
27#include "llvm/MC/MCDisassembler/MCDisassembler.h"
28#include "llvm/MC/MCInst.h"
29#include "llvm/MC/MCInstrInfo.h"
30#include "llvm/MC/MCRegisterInfo.h"
31#include "llvm/MC/MCSubtargetInfo.h"
32#include "llvm/MC/MCTargetOptions.h"
33#include "llvm/MC/TargetRegistry.h"
34#include "llvm/Support/TargetSelect.h"
35
36#include "llvm/ADT/STLExtras.h"
37
38#include "Plugins/Process/Utility/InstructionUtils.h"
39#include "Register/Arch/RegisterContext_mips.h"
40
41using namespace lldb;
42using namespace lldb_private;
43
44LLDB_PLUGIN_DEFINE_ADV(EmulateInstructionMIPS64, InstructionMIPS64)
45
46#define UInt(x) ((uint64_t)x)
47#define integer int64_t
48
49//
50// EmulateInstructionMIPS64 implementation
51//
52
53#ifdef __mips__
54extern "C" {
55void LLVMInitializeMipsTargetInfo();
56void LLVMInitializeMipsTarget();
57void LLVMInitializeMipsAsmPrinter();
58void LLVMInitializeMipsTargetMC();
59void LLVMInitializeMipsDisassembler();
60}
61#endif
62
63EmulateInstructionMIPS64::EmulateInstructionMIPS64(
64 const lldb_private::ArchSpec &arch)
65 : EmulateInstruction(arch) {
66 /* Create instance of llvm::MCDisassembler */
67 std::string Status;
68 llvm::Triple triple = arch.GetTriple();
69 const llvm::Target *target =
70 llvm::TargetRegistry::lookupTarget(triple, Status);
71
72/*
73 * If we fail to get the target then we haven't registered it. The
74 * SystemInitializerCommon
75 * does not initialize targets, MCs and disassemblers. However we need the
76 * MCDisassembler
77 * to decode the instructions so that the decoding complexity stays with LLVM.
78 * Initialize the MIPS targets and disassemblers.
79*/
80#ifdef __mips__
81 if (!target) {
82 LLVMInitializeMipsTargetInfo();
83 LLVMInitializeMipsTarget();
84 LLVMInitializeMipsAsmPrinter();
85 LLVMInitializeMipsTargetMC();
86 LLVMInitializeMipsDisassembler();
87 Status);
88 }
89#endif
90
91 assert(target);
92
93 llvm::StringRef cpu;
94
95 switch (arch.GetCore()) {
96 case ArchSpec::eCore_mips32:
97 case ArchSpec::eCore_mips32el:
98 cpu = "mips32";
99 break;
100 case ArchSpec::eCore_mips32r2:
101 case ArchSpec::eCore_mips32r2el:
102 cpu = "mips32r2";
103 break;
104 case ArchSpec::eCore_mips32r3:
105 case ArchSpec::eCore_mips32r3el:
106 cpu = "mips32r3";
107 break;
108 case ArchSpec::eCore_mips32r5:
109 case ArchSpec::eCore_mips32r5el:
110 cpu = "mips32r5";
111 break;
112 case ArchSpec::eCore_mips32r6:
113 case ArchSpec::eCore_mips32r6el:
114 cpu = "mips32r6";
115 break;
116 case ArchSpec::eCore_mips64:
117 case ArchSpec::eCore_mips64el:
118 cpu = "mips64";
119 break;
120 case ArchSpec::eCore_mips64r2:
121 case ArchSpec::eCore_mips64r2el:
122 cpu = "mips64r2";
123 break;
124 case ArchSpec::eCore_mips64r3:
125 case ArchSpec::eCore_mips64r3el:
126 cpu = "mips64r3";
127 break;
128 case ArchSpec::eCore_mips64r5:
129 case ArchSpec::eCore_mips64r5el:
130 cpu = "mips64r5";
131 break;
132 case ArchSpec::eCore_mips64r6:
133 case ArchSpec::eCore_mips64r6el:
134 cpu = "mips64r6";
135 break;
136 default:
137 cpu = "generic";
138 break;
139 }
140
141 std::string features;
142 uint32_t arch_flags = arch.GetFlags();
143 if (arch_flags & ArchSpec::eMIPSAse_msa)
144 features += "+msa,";
145 if (arch_flags & ArchSpec::eMIPSAse_dsp)
146 features += "+dsp,";
147 if (arch_flags & ArchSpec::eMIPSAse_dspr2)
148 features += "+dspr2,";
149 if (arch_flags & ArchSpec::eMIPSAse_mips16)
150 features += "+mips16,";
151 if (arch_flags & ArchSpec::eMIPSAse_micromips)
152 features += "+micromips,";
153
154 m_reg_info.reset(target->createMCRegInfo(triple));
155 assert(m_reg_info.get());
156
157 m_insn_info.reset(target->createMCInstrInfo());
158 assert(m_insn_info.get());
159
160 m_asm_info.reset(target->createMCAsmInfo(*m_reg_info, triple, m_mc_options));
161 m_subtype_info.reset(target->createMCSubtargetInfo(triple, cpu, features));
162 assert(m_asm_info.get() && m_subtype_info.get());
163
164 m_context = std::make_unique<llvm::MCContext>(triple, *m_asm_info,
165 *m_reg_info, *m_subtype_info);
166 assert(m_context.get());
167
168 m_disasm.reset(target->createMCDisassembler(*m_subtype_info, *m_context));
169 assert(m_disasm.get());
170}
171
176
180
181llvm::StringRef EmulateInstructionMIPS64::GetPluginDescriptionStatic() {
182 return "Emulate instructions for the MIPS64 architecture.";
183}
184
185EmulateInstruction *
186EmulateInstructionMIPS64::CreateInstance(const ArchSpec &arch,
187 InstructionType inst_type) {
188 if (EmulateInstructionMIPS64::SupportsEmulatingInstructionsOfTypeStatic(
189 inst_type)) {
190 if (arch.GetTriple().getArch() == llvm::Triple::mips64 ||
191 arch.GetTriple().getArch() == llvm::Triple::mips64el) {
192 return new EmulateInstructionMIPS64(arch);
193 }
194 }
195
196 return nullptr;
197}
198
199bool EmulateInstructionMIPS64::SetTargetTriple(const ArchSpec &arch) {
200 return arch.GetTriple().getArch() == llvm::Triple::mips64 ||
201 arch.GetTriple().getArch() == llvm::Triple::mips64el;
202}
203
204const char *EmulateInstructionMIPS64::GetRegisterName(unsigned reg_num,
205 bool alternate_name) {
206 if (alternate_name) {
207 switch (reg_num) {
208 case dwarf_sp_mips64:
209 return "r29";
210 case dwarf_r30_mips64:
211 return "r30";
212 case dwarf_ra_mips64:
213 return "r31";
214 case dwarf_f0_mips64:
215 return "f0";
216 case dwarf_f1_mips64:
217 return "f1";
218 case dwarf_f2_mips64:
219 return "f2";
220 case dwarf_f3_mips64:
221 return "f3";
222 case dwarf_f4_mips64:
223 return "f4";
224 case dwarf_f5_mips64:
225 return "f5";
226 case dwarf_f6_mips64:
227 return "f6";
228 case dwarf_f7_mips64:
229 return "f7";
230 case dwarf_f8_mips64:
231 return "f8";
232 case dwarf_f9_mips64:
233 return "f9";
234 case dwarf_f10_mips64:
235 return "f10";
236 case dwarf_f11_mips64:
237 return "f11";
238 case dwarf_f12_mips64:
239 return "f12";
240 case dwarf_f13_mips64:
241 return "f13";
242 case dwarf_f14_mips64:
243 return "f14";
244 case dwarf_f15_mips64:
245 return "f15";
246 case dwarf_f16_mips64:
247 return "f16";
248 case dwarf_f17_mips64:
249 return "f17";
250 case dwarf_f18_mips64:
251 return "f18";
252 case dwarf_f19_mips64:
253 return "f19";
254 case dwarf_f20_mips64:
255 return "f20";
256 case dwarf_f21_mips64:
257 return "f21";
258 case dwarf_f22_mips64:
259 return "f22";
260 case dwarf_f23_mips64:
261 return "f23";
262 case dwarf_f24_mips64:
263 return "f24";
264 case dwarf_f25_mips64:
265 return "f25";
266 case dwarf_f26_mips64:
267 return "f26";
268 case dwarf_f27_mips64:
269 return "f27";
270 case dwarf_f28_mips64:
271 return "f28";
272 case dwarf_f29_mips64:
273 return "f29";
274 case dwarf_f30_mips64:
275 return "f30";
276 case dwarf_f31_mips64:
277 return "f31";
278 case dwarf_w0_mips64:
279 return "w0";
280 case dwarf_w1_mips64:
281 return "w1";
282 case dwarf_w2_mips64:
283 return "w2";
284 case dwarf_w3_mips64:
285 return "w3";
286 case dwarf_w4_mips64:
287 return "w4";
288 case dwarf_w5_mips64:
289 return "w5";
290 case dwarf_w6_mips64:
291 return "w6";
292 case dwarf_w7_mips64:
293 return "w7";
294 case dwarf_w8_mips64:
295 return "w8";
296 case dwarf_w9_mips64:
297 return "w9";
298 case dwarf_w10_mips64:
299 return "w10";
300 case dwarf_w11_mips64:
301 return "w11";
302 case dwarf_w12_mips64:
303 return "w12";
304 case dwarf_w13_mips64:
305 return "w13";
306 case dwarf_w14_mips64:
307 return "w14";
308 case dwarf_w15_mips64:
309 return "w15";
310 case dwarf_w16_mips64:
311 return "w16";
312 case dwarf_w17_mips64:
313 return "w17";
314 case dwarf_w18_mips64:
315 return "w18";
316 case dwarf_w19_mips64:
317 return "w19";
318 case dwarf_w20_mips64:
319 return "w20";
320 case dwarf_w21_mips64:
321 return "w21";
322 case dwarf_w22_mips64:
323 return "w22";
324 case dwarf_w23_mips64:
325 return "w23";
326 case dwarf_w24_mips64:
327 return "w24";
328 case dwarf_w25_mips64:
329 return "w25";
330 case dwarf_w26_mips64:
331 return "w26";
332 case dwarf_w27_mips64:
333 return "w27";
334 case dwarf_w28_mips64:
335 return "w28";
336 case dwarf_w29_mips64:
337 return "w29";
338 case dwarf_w30_mips64:
339 return "w30";
340 case dwarf_w31_mips64:
341 return "w31";
342 case dwarf_mir_mips64:
343 return "mir";
344 case dwarf_mcsr_mips64:
345 return "mcsr";
346 case dwarf_config5_mips64:
347 return "config5";
348 default:
349 break;
350 }
351 return nullptr;
352 }
353
354 switch (reg_num) {
355 case dwarf_zero_mips64:
356 return "r0";
357 case dwarf_r1_mips64:
358 return "r1";
359 case dwarf_r2_mips64:
360 return "r2";
361 case dwarf_r3_mips64:
362 return "r3";
363 case dwarf_r4_mips64:
364 return "r4";
365 case dwarf_r5_mips64:
366 return "r5";
367 case dwarf_r6_mips64:
368 return "r6";
369 case dwarf_r7_mips64:
370 return "r7";
371 case dwarf_r8_mips64:
372 return "r8";
373 case dwarf_r9_mips64:
374 return "r9";
375 case dwarf_r10_mips64:
376 return "r10";
377 case dwarf_r11_mips64:
378 return "r11";
379 case dwarf_r12_mips64:
380 return "r12";
381 case dwarf_r13_mips64:
382 return "r13";
383 case dwarf_r14_mips64:
384 return "r14";
385 case dwarf_r15_mips64:
386 return "r15";
387 case dwarf_r16_mips64:
388 return "r16";
389 case dwarf_r17_mips64:
390 return "r17";
391 case dwarf_r18_mips64:
392 return "r18";
393 case dwarf_r19_mips64:
394 return "r19";
395 case dwarf_r20_mips64:
396 return "r20";
397 case dwarf_r21_mips64:
398 return "r21";
399 case dwarf_r22_mips64:
400 return "r22";
401 case dwarf_r23_mips64:
402 return "r23";
403 case dwarf_r24_mips64:
404 return "r24";
405 case dwarf_r25_mips64:
406 return "r25";
407 case dwarf_r26_mips64:
408 return "r26";
409 case dwarf_r27_mips64:
410 return "r27";
411 case dwarf_gp_mips64:
412 return "gp";
413 case dwarf_sp_mips64:
414 return "sp";
415 case dwarf_r30_mips64:
416 return "fp";
417 case dwarf_ra_mips64:
418 return "ra";
419 case dwarf_sr_mips64:
420 return "sr";
421 case dwarf_lo_mips64:
422 return "lo";
423 case dwarf_hi_mips64:
424 return "hi";
425 case dwarf_bad_mips64:
426 return "bad";
427 case dwarf_cause_mips64:
428 return "cause";
429 case dwarf_pc_mips64:
430 return "pc";
431 case dwarf_f0_mips64:
432 return "f0";
433 case dwarf_f1_mips64:
434 return "f1";
435 case dwarf_f2_mips64:
436 return "f2";
437 case dwarf_f3_mips64:
438 return "f3";
439 case dwarf_f4_mips64:
440 return "f4";
441 case dwarf_f5_mips64:
442 return "f5";
443 case dwarf_f6_mips64:
444 return "f6";
445 case dwarf_f7_mips64:
446 return "f7";
447 case dwarf_f8_mips64:
448 return "f8";
449 case dwarf_f9_mips64:
450 return "f9";
451 case dwarf_f10_mips64:
452 return "f10";
453 case dwarf_f11_mips64:
454 return "f11";
455 case dwarf_f12_mips64:
456 return "f12";
457 case dwarf_f13_mips64:
458 return "f13";
459 case dwarf_f14_mips64:
460 return "f14";
461 case dwarf_f15_mips64:
462 return "f15";
463 case dwarf_f16_mips64:
464 return "f16";
465 case dwarf_f17_mips64:
466 return "f17";
467 case dwarf_f18_mips64:
468 return "f18";
469 case dwarf_f19_mips64:
470 return "f19";
471 case dwarf_f20_mips64:
472 return "f20";
473 case dwarf_f21_mips64:
474 return "f21";
475 case dwarf_f22_mips64:
476 return "f22";
477 case dwarf_f23_mips64:
478 return "f23";
479 case dwarf_f24_mips64:
480 return "f24";
481 case dwarf_f25_mips64:
482 return "f25";
483 case dwarf_f26_mips64:
484 return "f26";
485 case dwarf_f27_mips64:
486 return "f27";
487 case dwarf_f28_mips64:
488 return "f28";
489 case dwarf_f29_mips64:
490 return "f29";
491 case dwarf_f30_mips64:
492 return "f30";
493 case dwarf_f31_mips64:
494 return "f31";
495 case dwarf_fcsr_mips64:
496 return "fcsr";
497 case dwarf_fir_mips64:
498 return "fir";
499 case dwarf_w0_mips64:
500 return "w0";
501 case dwarf_w1_mips64:
502 return "w1";
503 case dwarf_w2_mips64:
504 return "w2";
505 case dwarf_w3_mips64:
506 return "w3";
507 case dwarf_w4_mips64:
508 return "w4";
509 case dwarf_w5_mips64:
510 return "w5";
511 case dwarf_w6_mips64:
512 return "w6";
513 case dwarf_w7_mips64:
514 return "w7";
515 case dwarf_w8_mips64:
516 return "w8";
517 case dwarf_w9_mips64:
518 return "w9";
519 case dwarf_w10_mips64:
520 return "w10";
521 case dwarf_w11_mips64:
522 return "w11";
523 case dwarf_w12_mips64:
524 return "w12";
525 case dwarf_w13_mips64:
526 return "w13";
527 case dwarf_w14_mips64:
528 return "w14";
529 case dwarf_w15_mips64:
530 return "w15";
531 case dwarf_w16_mips64:
532 return "w16";
533 case dwarf_w17_mips64:
534 return "w17";
535 case dwarf_w18_mips64:
536 return "w18";
537 case dwarf_w19_mips64:
538 return "w19";
539 case dwarf_w20_mips64:
540 return "w20";
541 case dwarf_w21_mips64:
542 return "w21";
543 case dwarf_w22_mips64:
544 return "w22";
545 case dwarf_w23_mips64:
546 return "w23";
547 case dwarf_w24_mips64:
548 return "w24";
549 case dwarf_w25_mips64:
550 return "w25";
551 case dwarf_w26_mips64:
552 return "w26";
553 case dwarf_w27_mips64:
554 return "w27";
555 case dwarf_w28_mips64:
556 return "w28";
557 case dwarf_w29_mips64:
558 return "w29";
559 case dwarf_w30_mips64:
560 return "w30";
561 case dwarf_w31_mips64:
562 return "w31";
563 case dwarf_mcsr_mips64:
564 return "mcsr";
565 case dwarf_mir_mips64:
566 return "mir";
567 case dwarf_config5_mips64:
568 return "config5";
569 }
570 return nullptr;
571}
572
573std::optional<RegisterInfo>
574EmulateInstructionMIPS64::GetRegisterInfo(RegisterKind reg_kind,
575 uint32_t reg_num) {
576 if (reg_kind == eRegisterKindGeneric) {
577 switch (reg_num) {
578 case LLDB_REGNUM_GENERIC_PC:
579 reg_kind = eRegisterKindDWARF;
580 reg_num = dwarf_pc_mips64;
581 break;
582 case LLDB_REGNUM_GENERIC_SP:
583 reg_kind = eRegisterKindDWARF;
584 reg_num = dwarf_sp_mips64;
585 break;
586 case LLDB_REGNUM_GENERIC_FP:
587 reg_kind = eRegisterKindDWARF;
588 reg_num = dwarf_r30_mips64;
589 break;
590 case LLDB_REGNUM_GENERIC_RA:
591 reg_kind = eRegisterKindDWARF;
592 reg_num = dwarf_ra_mips64;
593 break;
594 case LLDB_REGNUM_GENERIC_FLAGS:
595 reg_kind = eRegisterKindDWARF;
596 reg_num = dwarf_sr_mips64;
597 break;
598 default:
599 return {};
600 }
601 }
602
603 if (reg_kind == eRegisterKindDWARF) {
604 RegisterInfo reg_info;
605 ::memset(&reg_info, 0, sizeof(RegisterInfo));
606 ::memset(reg_info.kinds, LLDB_INVALID_REGNUM, sizeof(reg_info.kinds));
607
608 if (reg_num == dwarf_sr_mips64 || reg_num == dwarf_fcsr_mips64 ||
609 reg_num == dwarf_fir_mips64 || reg_num == dwarf_mcsr_mips64 ||
610 reg_num == dwarf_mir_mips64 || reg_num == dwarf_config5_mips64) {
611 reg_info.byte_size = 4;
612 reg_info.format = eFormatHex;
613 reg_info.encoding = eEncodingUint;
614 } else if ((int)reg_num >= dwarf_zero_mips64 &&
615 (int)reg_num <= dwarf_f31_mips64) {
616 reg_info.byte_size = 8;
617 reg_info.format = eFormatHex;
618 reg_info.encoding = eEncodingUint;
619 } else if ((int)reg_num >= dwarf_w0_mips64 &&
620 (int)reg_num <= dwarf_w31_mips64) {
621 reg_info.byte_size = 16;
622 reg_info.format = eFormatVectorOfUInt8;
623 reg_info.encoding = eEncodingVector;
624 } else {
625 return {};
626 }
627
628 reg_info.name = GetRegisterName(reg_num, false);
629 reg_info.alt_name = GetRegisterName(reg_num, true);
630 reg_info.kinds[eRegisterKindDWARF] = reg_num;
631
632 switch (reg_num) {
633 case dwarf_r30_mips64:
634 reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP;
635 break;
636 case dwarf_ra_mips64:
637 reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_RA;
638 break;
639 case dwarf_sp_mips64:
640 reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_SP;
641 break;
642 case dwarf_pc_mips64:
643 reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC;
644 break;
645 case dwarf_sr_mips64:
646 reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FLAGS;
647 break;
648 default:
649 break;
650 }
651 return reg_info;
652 }
653 return {};
654}
655
656EmulateInstructionMIPS64::MipsOpcode *
657EmulateInstructionMIPS64::GetOpcodeForInstruction(llvm::StringRef op_name) {
658 static EmulateInstructionMIPS64::MipsOpcode g_opcodes[] = {
659 // Prologue/Epilogue instructions
660 {"DADDiu", &EmulateInstructionMIPS64::Emulate_DADDiu,
661 "DADDIU rt, rs, immediate"},
662 {"ADDiu", &EmulateInstructionMIPS64::Emulate_DADDiu,
663 "ADDIU rt, rs, immediate"},
664 {"SD", &EmulateInstructionMIPS64::Emulate_SD, "SD rt, offset(rs)"},
665 {"LD", &EmulateInstructionMIPS64::Emulate_LD, "LD rt, offset(base)"},
666 {"DSUBU", &EmulateInstructionMIPS64::Emulate_DSUBU_DADDU,
667 "DSUBU rd, rs, rt"},
668 {"SUBU", &EmulateInstructionMIPS64::Emulate_DSUBU_DADDU,
669 "SUBU rd, rs, rt"},
670 {"DADDU", &EmulateInstructionMIPS64::Emulate_DSUBU_DADDU,
671 "DADDU rd, rs, rt"},
672 {"ADDU", &EmulateInstructionMIPS64::Emulate_DSUBU_DADDU,
673 "ADDU rd, rs, rt"},
674 {"LUI", &EmulateInstructionMIPS64::Emulate_LUI, "LUI rt, immediate"},
675
676 // Load/Store instructions
677 /* Following list of emulated instructions are required by implementation
678 of hardware watchpoint
679 for MIPS in lldb. As we just need the address accessed by instructions,
680 we have generalised
681 all these instructions in 2 functions depending on their addressing
682 modes */
683
684 {"LB", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
685 "LB rt, offset(base)"},
686 {"LBE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
687 "LBE rt, offset(base)"},
688 {"LBU", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
689 "LBU rt, offset(base)"},
690 {"LBUE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
691 "LBUE rt, offset(base)"},
692 {"LDC1", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
693 "LDC1 ft, offset(base)"},
694 {"LDL", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
695 "LDL rt, offset(base)"},
696 {"LDR", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
697 "LDR rt, offset(base)"},
698 {"LLD", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
699 "LLD rt, offset(base)"},
700 {"LDC2", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
701 "LDC2 rt, offset(base)"},
702 {"LDXC1", &EmulateInstructionMIPS64::Emulate_LDST_Reg,
703 "LDXC1 fd, index (base)"},
704 {"LH", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
705 "LH rt, offset(base)"},
706 {"LHE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
707 "LHE rt, offset(base)"},
708 {"LHU", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
709 "LHU rt, offset(base)"},
710 {"LHUE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
711 "LHUE rt, offset(base)"},
712 {"LL", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
713 "LL rt, offset(base)"},
714 {"LLE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
715 "LLE rt, offset(base)"},
716 {"LUXC1", &EmulateInstructionMIPS64::Emulate_LDST_Reg,
717 "LUXC1 fd, index (base)"},
718 {"LW", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
719 "LW rt, offset(rs)"},
720 {"LWC1", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
721 "LWC1 ft, offset(base)"},
722 {"LWC2", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
723 "LWC2 rt, offset(base)"},
724 {"LWE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
725 "LWE rt, offset(base)"},
726 {"LWL", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
727 "LWL rt, offset(base)"},
728 {"LWLE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
729 "LWLE rt, offset(base)"},
730 {"LWR", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
731 "LWR rt, offset(base)"},
732 {"LWRE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
733 "LWRE rt, offset(base)"},
734 {"LWXC1", &EmulateInstructionMIPS64::Emulate_LDST_Reg,
735 "LWXC1 fd, index (base)"},
736
737 {"SB", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
738 "SB rt, offset(base)"},
739 {"SBE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
740 "SBE rt, offset(base)"},
741 {"SC", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
742 "SC rt, offset(base)"},
743 {"SCE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
744 "SCE rt, offset(base)"},
745 {"SCD", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
746 "SCD rt, offset(base)"},
747 {"SDL", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
748 "SDL rt, offset(base)"},
749 {"SDR", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
750 "SDR rt, offset(base)"},
751 {"SDC1", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
752 "SDC1 ft, offset(base)"},
753 {"SDC2", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
754 "SDC2 rt, offset(base)"},
755 {"SDXC1", &EmulateInstructionMIPS64::Emulate_LDST_Reg,
756 "SDXC1 fs, index (base)"},
757 {"SH", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
758 "SH rt, offset(base)"},
759 {"SHE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
760 "SHE rt, offset(base)"},
761 {"SUXC1", &EmulateInstructionMIPS64::Emulate_LDST_Reg,
762 "SUXC1 fs, index (base)"},
763 {"SW", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
764 "SW rt, offset(rs)"},
765 {"SWC1", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
766 "SWC1 ft, offset(base)"},
767 {"SWC2", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
768 "SWC2 rt, offset(base)"},
769 {"SWE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
770 "SWE rt, offset(base)"},
771 {"SWL", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
772 "SWL rt, offset(base)"},
773 {"SWLE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
774 "SWLE rt, offset(base)"},
775 {"SWR", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
776 "SWR rt, offset(base)"},
777 {"SWRE", &EmulateInstructionMIPS64::Emulate_LDST_Imm,
778 "SWRE rt, offset(base)"},
779 {"SWXC1", &EmulateInstructionMIPS64::Emulate_LDST_Reg,
780 "SWXC1 fs, index (base)"},
781
782 // Branch instructions
783 {"BEQ", &EmulateInstructionMIPS64::Emulate_BXX_3ops, "BEQ rs,rt,offset"},
784 {"BEQ64", &EmulateInstructionMIPS64::Emulate_BXX_3ops, "BEQ rs,rt,offset"},
785 {"BNE", &EmulateInstructionMIPS64::Emulate_BXX_3ops, "BNE rs,rt,offset"},
786 {"BNE64", &EmulateInstructionMIPS64::Emulate_BXX_3ops, "BNE rs,rt,offset"},
787 {"BEQL", &EmulateInstructionMIPS64::Emulate_BXX_3ops,
788 "BEQL rs,rt,offset"},
789 {"BNEL", &EmulateInstructionMIPS64::Emulate_BXX_3ops,
790 "BNEL rs,rt,offset"},
791 {"BGEZALL", &EmulateInstructionMIPS64::Emulate_Bcond_Link,
792 "BGEZALL rt,offset"},
793 {"BAL", &EmulateInstructionMIPS64::Emulate_BAL, "BAL offset"},
794 {"BGEZAL", &EmulateInstructionMIPS64::Emulate_Bcond_Link,
795 "BGEZAL rs,offset"},
796 {"BALC", &EmulateInstructionMIPS64::Emulate_BALC, "BALC offset"},
797 {"BC", &EmulateInstructionMIPS64::Emulate_BC, "BC offset"},
798 {"BGEZ", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BGEZ rs,offset"},
799 {"BGEZ64", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BGEZ rs,offset"},
800 {"BLEZALC", &EmulateInstructionMIPS64::Emulate_Bcond_Link_C,
801 "BLEZALC rs,offset"},
802 {"BGEZALC", &EmulateInstructionMIPS64::Emulate_Bcond_Link_C,
803 "BGEZALC rs,offset"},
804 {"BLTZALC", &EmulateInstructionMIPS64::Emulate_Bcond_Link_C,
805 "BLTZALC rs,offset"},
806 {"BGTZALC", &EmulateInstructionMIPS64::Emulate_Bcond_Link_C,
807 "BGTZALC rs,offset"},
808 {"BEQZALC", &EmulateInstructionMIPS64::Emulate_Bcond_Link_C,
809 "BEQZALC rs,offset"},
810 {"BNEZALC", &EmulateInstructionMIPS64::Emulate_Bcond_Link_C,
811 "BNEZALC rs,offset"},
812 {"BEQC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
813 "BEQC rs,rt,offset"},
814 {"BEQC64", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
815 "BEQC rs,rt,offset"},
816 {"BNEC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
817 "BNEC rs,rt,offset"},
818 {"BNEC64", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
819 "BNEC rs,rt,offset"},
820 {"BLTC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
821 "BLTC rs,rt,offset"},
822 {"BLTC64", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
823 "BLTC rs,rt,offset"},
824 {"BGEC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
825 "BGEC rs,rt,offset"},
826 {"BGEC64", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
827 "BGEC rs,rt,offset"},
828 {"BLTUC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
829 "BLTUC rs,rt,offset"},
830 {"BLTUC64", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
831 "BLTUC rs,rt,offset"},
832 {"BGEUC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
833 "BGEUC rs,rt,offset"},
834 {"BGEUC64", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
835 "BGEUC rs,rt,offset"},
836 {"BLTZC", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
837 "BLTZC rt,offset"},
838 {"BLTZC64", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
839 "BLTZC rt,offset"},
840 {"BLEZC", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
841 "BLEZC rt,offset"},
842 {"BLEZC64", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
843 "BLEZC rt,offset"},
844 {"BGEZC", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
845 "BGEZC rt,offset"},
846 {"BGEZC64", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
847 "BGEZC rt,offset"},
848 {"BGTZC", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
849 "BGTZC rt,offset"},
850 {"BGTZC64", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
851 "BGTZC rt,offset"},
852 {"BEQZC", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
853 "BEQZC rt,offset"},
854 {"BEQZC64", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
855 "BEQZC rt,offset"},
856 {"BNEZC", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
857 "BNEZC rt,offset"},
858 {"BNEZC64", &EmulateInstructionMIPS64::Emulate_BXX_2ops_C,
859 "BNEZC rt,offset"},
860 {"BGEZL", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BGEZL rt,offset"},
861 {"BGTZ", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BGTZ rt,offset"},
862 {"BGTZ64", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BGTZ rt,offset"},
863 {"BGTZL", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BGTZL rt,offset"},
864 {"BLEZ", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BLEZ rt,offset"},
865 {"BLEZ64", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BLEZ rt,offset"},
866 {"BLEZL", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BLEZL rt,offset"},
867 {"BLTZ", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BLTZ rt,offset"},
868 {"BLTZ64", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BLTZ rt,offset"},
869 {"BLTZAL", &EmulateInstructionMIPS64::Emulate_Bcond_Link,
870 "BLTZAL rt,offset"},
871 {"BLTZALL", &EmulateInstructionMIPS64::Emulate_Bcond_Link,
872 "BLTZALL rt,offset"},
873 {"BLTZL", &EmulateInstructionMIPS64::Emulate_BXX_2ops, "BLTZL rt,offset"},
874 {"BOVC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
875 "BOVC rs,rt,offset"},
876 {"BNVC", &EmulateInstructionMIPS64::Emulate_BXX_3ops_C,
877 "BNVC rs,rt,offset"},
878 {"J", &EmulateInstructionMIPS64::Emulate_J, "J target"},
879 {"JAL", &EmulateInstructionMIPS64::Emulate_JAL, "JAL target"},
880 {"JALX", &EmulateInstructionMIPS64::Emulate_JAL, "JALX target"},
881 {"JALR", &EmulateInstructionMIPS64::Emulate_JALR, "JALR target"},
882 {"JALR64", &EmulateInstructionMIPS64::Emulate_JALR, "JALR target"},
883 {"JALR_HB", &EmulateInstructionMIPS64::Emulate_JALR, "JALR.HB target"},
884 {"JIALC", &EmulateInstructionMIPS64::Emulate_JIALC, "JIALC rt,offset"},
885 {"JIALC64", &EmulateInstructionMIPS64::Emulate_JIALC, "JIALC rt,offset"},
886 {"JIC", &EmulateInstructionMIPS64::Emulate_JIC, "JIC rt,offset"},
887 {"JIC64", &EmulateInstructionMIPS64::Emulate_JIC, "JIC rt,offset"},
888 {"JR", &EmulateInstructionMIPS64::Emulate_JR, "JR target"},
889 {"JR64", &EmulateInstructionMIPS64::Emulate_JR, "JR target"},
890 {"JR_HB", &EmulateInstructionMIPS64::Emulate_JR, "JR.HB target"},
891 {"BC1F", &EmulateInstructionMIPS64::Emulate_FP_branch, "BC1F cc, offset"},
892 {"BC1T", &EmulateInstructionMIPS64::Emulate_FP_branch, "BC1T cc, offset"},
893 {"BC1FL", &EmulateInstructionMIPS64::Emulate_FP_branch,
894 "BC1FL cc, offset"},
895 {"BC1TL", &EmulateInstructionMIPS64::Emulate_FP_branch,
896 "BC1TL cc, offset"},
897 {"BC1EQZ", &EmulateInstructionMIPS64::Emulate_BC1EQZ,
898 "BC1EQZ ft, offset"},
899 {"BC1NEZ", &EmulateInstructionMIPS64::Emulate_BC1NEZ,
900 "BC1NEZ ft, offset"},
901 {"BC1ANY2F", &EmulateInstructionMIPS64::Emulate_3D_branch,
902 "BC1ANY2F cc, offset"},
903 {"BC1ANY2T", &EmulateInstructionMIPS64::Emulate_3D_branch,
904 "BC1ANY2T cc, offset"},
905 {"BC1ANY4F", &EmulateInstructionMIPS64::Emulate_3D_branch,
906 "BC1ANY4F cc, offset"},
907 {"BC1ANY4T", &EmulateInstructionMIPS64::Emulate_3D_branch,
908 "BC1ANY4T cc, offset"},
909 {"BNZ_B", &EmulateInstructionMIPS64::Emulate_BNZB, "BNZ.b wt,s16"},
910 {"BNZ_H", &EmulateInstructionMIPS64::Emulate_BNZH, "BNZ.h wt,s16"},
911 {"BNZ_W", &EmulateInstructionMIPS64::Emulate_BNZW, "BNZ.w wt,s16"},
912 {"BNZ_D", &EmulateInstructionMIPS64::Emulate_BNZD, "BNZ.d wt,s16"},
913 {"BZ_B", &EmulateInstructionMIPS64::Emulate_BZB, "BZ.b wt,s16"},
914 {"BZ_H", &EmulateInstructionMIPS64::Emulate_BZH, "BZ.h wt,s16"},
915 {"BZ_W", &EmulateInstructionMIPS64::Emulate_BZW, "BZ.w wt,s16"},
916 {"BZ_D", &EmulateInstructionMIPS64::Emulate_BZD, "BZ.d wt,s16"},
917 {"BNZ_V", &EmulateInstructionMIPS64::Emulate_BNZV, "BNZ.V wt,s16"},
918 {"BZ_V", &EmulateInstructionMIPS64::Emulate_BZV, "BZ.V wt,s16"},
919 };
920
921 for (MipsOpcode &opcode : g_opcodes) {
922 if (op_name.equals_insensitive(opcode.op_name))
923 return &opcode;
924 }
925 return nullptr;
926}
927
928bool EmulateInstructionMIPS64::ReadInstruction() {
929 bool success = false;
930 m_addr = ReadRegisterUnsigned(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC,
931 LLDB_INVALID_ADDRESS, &success);
932 if (success) {
933 Context read_inst_context;
934 read_inst_context.type = eContextReadOpcode;
935 read_inst_context.SetNoArgs();
936 m_opcode.SetOpcode32(
937 ReadMemoryUnsigned(read_inst_context, m_addr, 4, 0, &success),
938 GetByteOrder());
939 }
940 if (!success)
941 m_addr = LLDB_INVALID_ADDRESS;
942 return success;
943}
944
945bool EmulateInstructionMIPS64::EvaluateInstruction(uint32_t evaluate_options) {
946 bool success = false;
947 llvm::MCInst mc_insn;
948 uint64_t insn_size;
949 DataExtractor data;
950
951 /* Keep the complexity of the decode logic with the llvm::MCDisassembler
952 * class. */
953 if (m_opcode.GetData(data)) {
954 llvm::MCDisassembler::DecodeStatus decode_status;
955 llvm::ArrayRef<uint8_t> raw_insn(data.GetDataStart(), data.GetByteSize());
956 decode_status = m_disasm->getInstruction(mc_insn, insn_size, raw_insn,
957 m_addr, llvm::nulls());
958 if (decode_status != llvm::MCDisassembler::Success)
959 return false;
960 }
961
962 /*
963 * mc_insn.getOpcode() returns decoded opcode. However to make use
964 * of llvm::Mips::<insn> we would need "MipsGenInstrInfo.inc".
965 */
966 llvm::StringRef op_name = m_insn_info->getName(mc_insn.getOpcode());
967
968 /*
969 * Decoding has been done already. Just get the call-back function
970 * and emulate the instruction.
971 */
972 MipsOpcode *opcode_data = GetOpcodeForInstruction(op_name);
973
974 if (opcode_data == nullptr)
975 return false;
976
977 uint64_t old_pc = 0, new_pc = 0;
978 const bool auto_advance_pc =
979 evaluate_options & eEmulateInstructionOptionAutoAdvancePC;
980
981 if (auto_advance_pc) {
982 old_pc =
983 ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
984 if (!success)
985 return false;
986 }
987
988 /* emulate instruction */
989 success = (this->*opcode_data->callback)(mc_insn);
990 if (!success)
991 return false;
992
993 if (auto_advance_pc) {
994 new_pc =
995 ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
996 if (!success)
997 return false;
998
999 /* If we haven't changed the PC, change it here */
1000 if (old_pc == new_pc) {
1001 new_pc += 4;
1002 Context context;
1003 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1004 new_pc))
1005 return false;
1006 }
1007 }
1008
1009 return true;
1010}
1011
1012bool EmulateInstructionMIPS64::CreateFunctionEntryUnwind(
1013 UnwindPlan &unwind_plan) {
1014 unwind_plan.Clear();
1015 unwind_plan.SetRegisterKind(eRegisterKindDWARF);
1016
1017 UnwindPlan::Row row;
1018 const bool can_replace = false;
1019
1020 // Our previous Call Frame Address is the stack pointer
1021 row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_sp_mips64, 0);
1022
1023 // Our previous PC is in the RA
1024 row.SetRegisterLocationToRegister(dwarf_pc_mips64, dwarf_ra_mips64,
1025 can_replace);
1026
1027 unwind_plan.AppendRow(std::move(row));
1028
1029 // All other registers are the same.
1030 unwind_plan.SetSourceName("EmulateInstructionMIPS64");
1031 unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
1032 unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolYes);
1033 unwind_plan.SetUnwindPlanForSignalTrap(eLazyBoolNo);
1034 unwind_plan.SetReturnAddressRegister(dwarf_ra_mips64);
1035
1036 return true;
1037}
1038
1039bool EmulateInstructionMIPS64::nonvolatile_reg_p(uint64_t regnum) {
1040 switch (regnum) {
1041 case dwarf_r16_mips64:
1042 case dwarf_r17_mips64:
1043 case dwarf_r18_mips64:
1044 case dwarf_r19_mips64:
1045 case dwarf_r20_mips64:
1046 case dwarf_r21_mips64:
1047 case dwarf_r22_mips64:
1048 case dwarf_r23_mips64:
1049 case dwarf_gp_mips64:
1050 case dwarf_sp_mips64:
1051 case dwarf_r30_mips64:
1052 case dwarf_ra_mips64:
1053 return true;
1054 default:
1055 return false;
1056 }
1057 return false;
1058}
1059
1060bool EmulateInstructionMIPS64::Emulate_DADDiu(llvm::MCInst &insn) {
1061 // DADDIU rt, rs, immediate
1062 // GPR[rt] <- GPR[rs] + sign_extend(immediate)
1063
1064 uint8_t dst, src;
1065 bool success = false;
1066 const uint32_t imm16 = insn.getOperand(2).getImm();
1067 int64_t imm = SignedBits(imm16, 15, 0);
1068
1069 dst = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1070 src = m_reg_info->getEncodingValue(insn.getOperand(1).getReg());
1071
1072 // If immediate is greater than 2^16 - 1 then clang generate LUI,
1073 // (D)ADDIU,(D)SUBU instructions in prolog. Example lui $1, 0x2 daddiu $1,
1074 // $1, -0x5920 dsubu $sp, $sp, $1 In this case, (D)ADDIU dst and src will be
1075 // same and not equal to sp
1076 if (dst == src) {
1077 Context context;
1078
1079 /* read <src> register */
1080 const uint64_t src_opd_val = ReadRegisterUnsigned(
1081 eRegisterKindDWARF, dwarf_zero_mips64 + src, 0, &success);
1082 if (!success)
1083 return false;
1084
1085 /* Check if this is daddiu sp, sp, imm16 */
1086 if (dst == dwarf_sp_mips64) {
1087 /*
1088 * From the MIPS IV spec:
1089 *
1090 * The term “unsigned” in the instruction name is a misnomer; this
1091 * operation is 64-bit modulo arithmetic that does not trap on overflow.
1092 * It is appropriate for arithmetic which is not signed, such as address
1093 * arithmetic, or integer arithmetic environments that ignore overflow,
1094 * such as “C” language arithmetic.
1095 *
1096 * Assume 2's complement and rely on unsigned overflow here.
1097 */
1098 uint64_t result = src_opd_val + imm;
1099 std::optional<RegisterInfo> reg_info_sp =
1100 GetRegisterInfo(eRegisterKindDWARF, dwarf_sp_mips64);
1101 if (reg_info_sp)
1102 context.SetRegisterPlusOffset(*reg_info_sp, imm);
1103
1104 /* We are allocating bytes on stack */
1105 context.type = eContextAdjustStackPointer;
1106
1107 WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_sp_mips64,
1108 result);
1109 return true;
1110 }
1111
1112 imm += src_opd_val;
1113 context.SetImmediateSigned(imm);
1114 context.type = eContextImmediate;
1115
1116 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF,
1117 dwarf_zero_mips64 + dst, imm))
1118 return false;
1119 }
1120
1121 return true;
1122}
1123
1124bool EmulateInstructionMIPS64::Emulate_SD(llvm::MCInst &insn) {
1125 uint64_t address;
1126 bool success = false;
1127 uint32_t imm16 = insn.getOperand(2).getImm();
1128 uint64_t imm = SignedBits(imm16, 15, 0);
1129 uint32_t src, base;
1130 Context bad_vaddr_context;
1131
1132 src = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1133 base = m_reg_info->getEncodingValue(insn.getOperand(1).getReg());
1134
1135 std::optional<RegisterInfo> reg_info_base =
1136 GetRegisterInfo(eRegisterKindDWARF, dwarf_zero_mips64 + base);
1137 std::optional<RegisterInfo> reg_info_src =
1138 GetRegisterInfo(eRegisterKindDWARF, dwarf_zero_mips64 + src);
1139 if (!reg_info_base || !reg_info_src)
1140 return false;
1141
1142 /* read SP */
1143 address = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips64 + base,
1144 0, &success);
1145 if (!success)
1146 return false;
1147
1148 /* destination address */
1149 address = address + imm;
1150
1151 /* We look for sp based non-volatile register stores */
1152 if (nonvolatile_reg_p(src)) {
1153 Context context;
1154 context.type = eContextPushRegisterOnStack;
1155 context.SetRegisterToRegisterPlusOffset(*reg_info_src, *reg_info_base, 0);
1156
1157 std::optional<RegisterValue> data_src = ReadRegister(*reg_info_base);
1158 if (!data_src)
1159 return false;
1160
1161 Status error;
1162 RegisterValue::BytesContainer buffer(reg_info_src->byte_size);
1163 if (data_src->GetAsMemoryData(*reg_info_src, buffer.data(),
1164 reg_info_src->byte_size, eByteOrderLittle,
1165 error) == 0)
1166 return false;
1167
1168 if (!WriteMemory(context, address, buffer.data(), reg_info_src->byte_size))
1169 return false;
1170 }
1171
1172 /* Set the bad_vaddr register with base address used in the instruction */
1173 bad_vaddr_context.type = eContextInvalid;
1174 WriteRegisterUnsigned(bad_vaddr_context, eRegisterKindDWARF, dwarf_bad_mips64,
1175 address);
1176
1177 return true;
1178}
1179
1180bool EmulateInstructionMIPS64::Emulate_LD(llvm::MCInst &insn) {
1181 bool success = false;
1182 uint32_t src, base;
1183 int64_t imm, address;
1184 Context bad_vaddr_context;
1185
1186 src = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1187 base = m_reg_info->getEncodingValue(insn.getOperand(1).getReg());
1188 imm = insn.getOperand(2).getImm();
1189
1190 if (!GetRegisterInfo(eRegisterKindDWARF, dwarf_zero_mips64 + base))
1191 return false;
1192
1193 /* read base register */
1194 address = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips64 + base,
1195 0, &success);
1196 if (!success)
1197 return false;
1198
1199 /* destination address */
1200 address = address + imm;
1201
1202 /* Set the bad_vaddr register with base address used in the instruction */
1203 bad_vaddr_context.type = eContextInvalid;
1204 WriteRegisterUnsigned(bad_vaddr_context, eRegisterKindDWARF, dwarf_bad_mips64,
1205 address);
1206
1207 if (nonvolatile_reg_p(src)) {
1208 RegisterValue data_src;
1209 std::optional<RegisterInfo> reg_info_src =
1210 GetRegisterInfo(eRegisterKindDWARF, dwarf_zero_mips64 + src);
1211 if (!reg_info_src)
1212 return false;
1213
1214 Context context;
1215 context.type = eContextRegisterLoad;
1216
1217 return WriteRegister(context, *reg_info_src, data_src);
1218 }
1219
1220 return false;
1221}
1222
1223bool EmulateInstructionMIPS64::Emulate_LUI(llvm::MCInst &insn) {
1224 // LUI rt, immediate
1225 // GPR[rt] <- sign_extend(immediate << 16)
1226
1227 const uint32_t imm32 = insn.getOperand(1).getImm() << 16;
1228 int64_t imm = SignedBits(imm32, 31, 0);
1229 uint8_t rt;
1230 Context context;
1231
1232 rt = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1233 context.SetImmediateSigned(imm);
1234 context.type = eContextImmediate;
1235
1236 return WriteRegisterUnsigned(context, eRegisterKindDWARF,
1237 dwarf_zero_mips64 + rt, imm);
1238}
1239
1240bool EmulateInstructionMIPS64::Emulate_DSUBU_DADDU(llvm::MCInst &insn) {
1241 // DSUBU sp, <src>, <rt>
1242 // DADDU sp, <src>, <rt>
1243 // DADDU dst, sp, <rt>
1244
1245 bool success = false;
1246 uint64_t result;
1247 uint8_t src, dst, rt;
1248 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1249
1250 dst = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1251 src = m_reg_info->getEncodingValue(insn.getOperand(1).getReg());
1252
1253 /* Check if sp is destination register */
1254 if (dst == dwarf_sp_mips64) {
1255 rt = m_reg_info->getEncodingValue(insn.getOperand(2).getReg());
1256
1257 /* read <src> register */
1258 uint64_t src_opd_val = ReadRegisterUnsigned(
1259 eRegisterKindDWARF, dwarf_zero_mips64 + src, 0, &success);
1260 if (!success)
1261 return false;
1262
1263 /* read <rt > register */
1264 uint64_t rt_opd_val = ReadRegisterUnsigned(
1265 eRegisterKindDWARF, dwarf_zero_mips64 + rt, 0, &success);
1266 if (!success)
1267 return false;
1268
1269 if (op_name.equals_insensitive("DSUBU") ||
1270 op_name.equals_insensitive("SUBU"))
1271 result = src_opd_val - rt_opd_val;
1272 else
1273 result = src_opd_val + rt_opd_val;
1274
1275 Context context;
1276 std::optional<RegisterInfo> reg_info_sp =
1277 GetRegisterInfo(eRegisterKindDWARF, dwarf_sp_mips64);
1278 if (reg_info_sp)
1279 context.SetRegisterPlusOffset(*reg_info_sp, rt_opd_val);
1280
1281 /* We are allocating bytes on stack */
1282 context.type = eContextAdjustStackPointer;
1283
1284 WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_sp_mips64, result);
1285
1286 return true;
1287 } else if (src == dwarf_sp_mips64) {
1288 rt = m_reg_info->getEncodingValue(insn.getOperand(2).getReg());
1289
1290 /* read <src> register */
1291 uint64_t src_opd_val = ReadRegisterUnsigned(
1292 eRegisterKindDWARF, dwarf_zero_mips64 + src, 0, &success);
1293 if (!success)
1294 return false;
1295
1296 /* read <rt> register */
1297 uint64_t rt_opd_val = ReadRegisterUnsigned(
1298 eRegisterKindDWARF, dwarf_zero_mips64 + rt, 0, &success);
1299 if (!success)
1300 return false;
1301
1302 Context context;
1303
1304 if (op_name.equals_insensitive("DSUBU") ||
1305 op_name.equals_insensitive("SUBU"))
1306 result = src_opd_val - rt_opd_val;
1307 else
1308 result = src_opd_val + rt_opd_val;
1309
1310 context.SetImmediateSigned(result);
1311 context.type = eContextImmediate;
1312
1313 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF,
1314 dwarf_zero_mips64 + dst, result))
1315 return false;
1316 }
1317
1318 return true;
1319}
1320
1321/*
1322 Emulate below MIPS branch instructions.
1323 BEQ, BNE : Branch on condition
1324 BEQL, BNEL : Branch likely
1325*/
1326bool EmulateInstructionMIPS64::Emulate_BXX_3ops(llvm::MCInst &insn) {
1327 bool success = false;
1328 uint32_t rs, rt;
1329 int64_t offset, pc, rs_val, rt_val,>
1330 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1331
1332 rs = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1333 rt = m_reg_info->getEncodingValue(insn.getOperand(1).getReg());
1334 offset = insn.getOperand(2).getImm();
1335
1336 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1337 if (!success)
1338 return false;
1339
1340 rs_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1341 dwarf_zero_mips64 + rs, 0, &success);
1342 if (!success)
1343 return false;
1344
1345 rt_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1346 dwarf_zero_mips64 + rt, 0, &success);
1347 if (!success)
1348 return false;
1349
1350 if (op_name.equals_insensitive("BEQ") || op_name.equals_insensitive("BEQL") ||
1351 op_name.equals_insensitive("BEQ64")) {
1352 if (rs_val == rt_val)
1353 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1354 else
1355 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1356 } else if (op_name.equals_insensitive("BNE") ||
1357 op_name.equals_insensitive("BNEL") ||
1358 op_name.equals_insensitive("BNE64")) {
1359 if (rs_val != rt_val)
1360 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1361 else
1362 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1363 }
1364
1365 Context context;
1366 context.type = eContextRelativeBranchImmediate;
1367 context.SetImmediate(offset);
1368
1369 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1370 target);
1371}
1372
1373/*
1374 Emulate below MIPS Non-Compact conditional branch and link instructions.
1375 BLTZAL, BGEZAL :
1376 BLTZALL, BGEZALL : Branch likely
1377*/
1378bool EmulateInstructionMIPS64::Emulate_Bcond_Link(llvm::MCInst &insn) {
1379 bool success = false;
1380 uint32_t rs;
1381 int64_t offset, pc,>
1382 int64_t rs_val;
1383 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1384
1385 rs = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1386 offset = insn.getOperand(1).getImm();
1387
1388 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1389 if (!success)
1390 return false;
1391
1392 rs_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1393 dwarf_zero_mips64 + rs, 0, &success);
1394 if (!success)
1395 return false;
1396
1397 if (op_name.equals_insensitive("BLTZAL") ||
1398 op_name.equals_insensitive("BLTZALL")) {
1399 if (rs_val < 0)
1400 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1401 else
1402 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1403 } else if (op_name.equals_insensitive("BGEZAL") ||
1404 op_name.equals_insensitive("BGEZALL")) {
1405 if (rs_val >= 0)
1406 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1407 else
1408 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1409 }
1410
1411 Context context;
1412
1413 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1414 target))
1415 return false;
1416
1417 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_ra_mips64,
1418 pc + 8))
1419 return false;
1420
1421 return true;
1422}
1423
1424bool EmulateInstructionMIPS64::Emulate_BAL(llvm::MCInst &insn) {
1425 bool success = false;
1426 int64_t offset, pc, target;
1427
1428 /*
1429 * BAL offset
1430 * offset = sign_ext (offset << 2)
1431 * RA = PC + 8
1432 * PC = PC + offset
1433 */
1434 offset = insn.getOperand(0).getImm();
1435
1436 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1437 if (!success)
1438 return false;
1439
1440 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1441
1442 Context context;
1443
1444 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1445 target))
1446 return false;
1447
1448 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_ra_mips64,
1449 pc + 8))
1450 return false;
1451
1452 return true;
1453}
1454
1455bool EmulateInstructionMIPS64::Emulate_BALC(llvm::MCInst &insn) {
1456 bool success = false;
1457 int64_t offset, pc, target;
1458
1459 /*
1460 * BALC offset
1461 * offset = sign_ext (offset << 2)
1462 * RA = PC + 4
1463 * PC = PC + 4 + offset
1464 */
1465 offset = insn.getOperand(0).getImm();
1466
1467 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1468 if (!success)
1469 return false;
1470
1471 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1472
1473 Context context;
1474
1475 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1476 target))
1477 return false;
1478
1479 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_ra_mips64,
1480 pc + 4))
1481 return false;
1482
1483 return true;
1484}
1485
1486/*
1487 Emulate below MIPS conditional branch and link instructions.
1488 BLEZALC, BGEZALC, BLTZALC, BGTZALC, BEQZALC, BNEZALC : Compact branches
1489*/
1490bool EmulateInstructionMIPS64::Emulate_Bcond_Link_C(llvm::MCInst &insn) {
1491 bool success = false;
1492 uint32_t rs;
1493 int64_t offset, pc, rs_val,>
1494 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1495
1496 rs = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1497 offset = insn.getOperand(1).getImm();
1498
1499 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1500 if (!success)
1501 return false;
1502
1503 rs_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1504 dwarf_zero_mips64 + rs, 0, &success);
1505 if (!success)
1506 return false;
1507
1508 if (op_name.equals_insensitive("BLEZALC")) {
1509 if (rs_val <= 0)
1510 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1511 else
1512 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1513 } else if (op_name.equals_insensitive("BGEZALC")) {
1514 if (rs_val >= 0)
1515 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1516 else
1517 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1518 } else if (op_name.equals_insensitive("BLTZALC")) {
1519 if (rs_val < 0)
1520 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1521 else
1522 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1523 } else if (op_name.equals_insensitive("BGTZALC")) {
1524 if (rs_val > 0)
1525 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1526 else
1527 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1528 } else if (op_name.equals_insensitive("BEQZALC")) {
1529 if (rs_val == 0)
1530 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1531 else
1532 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1533 } else if (op_name.equals_insensitive("BNEZALC")) {
1534 if (rs_val != 0)
1535 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1536 else
1537 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1538 }
1539
1540 Context context;
1541
1542 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1543 target))
1544 return false;
1545
1546 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_ra_mips64,
1547 pc + 4))
1548 return false;
1549
1550 return true;
1551}
1552
1553/*
1554 Emulate below MIPS branch instructions.
1555 BLTZL, BGEZL, BGTZL, BLEZL : Branch likely
1556 BLTZ, BGEZ, BGTZ, BLEZ : Non-compact branches
1557*/
1558bool EmulateInstructionMIPS64::Emulate_BXX_2ops(llvm::MCInst &insn) {
1559 bool success = false;
1560 uint32_t rs;
1561 int64_t offset, pc, rs_val,>
1562 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1563
1564 rs = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1565 offset = insn.getOperand(1).getImm();
1566
1567 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1568 if (!success)
1569 return false;
1570
1571 rs_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1572 dwarf_zero_mips64 + rs, 0, &success);
1573 if (!success)
1574 return false;
1575
1576 if (op_name.equals_insensitive("BLTZL") ||
1577 op_name.equals_insensitive("BLTZ") ||
1578 op_name.equals_insensitive("BLTZ64")) {
1579 if (rs_val < 0)
1580 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1581 else
1582 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1583 } else if (op_name.equals_insensitive("BGEZL") ||
1584 op_name.equals_insensitive("BGEZ") ||
1585 op_name.equals_insensitive("BGEZ64")) {
1586 if (rs_val >= 0)
1587 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1588 else
1589 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1590 } else if (op_name.equals_insensitive("BGTZL") ||
1591 op_name.equals_insensitive("BGTZ") ||
1592 op_name.equals_insensitive("BGTZ64")) {
1593 if (rs_val > 0)
1594 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1595 else
1596 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1597 } else if (op_name.equals_insensitive("BLEZL") ||
1598 op_name.equals_insensitive("BLEZ") ||
1599 op_name.equals_insensitive("BLEZ64")) {
1600 if (rs_val <= 0)
1601 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1602 else
1603 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
1604 }
1605
1606 Context context;
1607 context.type = eContextRelativeBranchImmediate;
1608 context.SetImmediate(offset);
1609
1610 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1611 target);
1612}
1613
1614bool EmulateInstructionMIPS64::Emulate_BC(llvm::MCInst &insn) {
1615 bool success = false;
1616 int64_t offset, pc, target;
1617
1618 /*
1619 * BC offset
1620 * offset = sign_ext (offset << 2)
1621 * PC = PC + 4 + offset
1622 */
1623 offset = insn.getOperand(0).getImm();
1624
1625 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1626 if (!success)
1627 return false;
1628
1629 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1630
1631 Context context;
1632
1633 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1634 target);
1635}
1636
1637static int IsAdd64bitOverflow(int64_t a, int64_t b) {
1638 int64_t r = (uint64_t)a + (uint64_t)b;
1639 return (a < 0 && b < 0 && r >= 0) || (a >= 0 && b >= 0 && r < 0);
1640}
1641
1642/*
1643 Emulate below MIPS branch instructions.
1644 BEQC, BNEC, BLTC, BGEC, BLTUC, BGEUC, BOVC, BNVC: Compact branch
1645 instructions with no delay slot
1646*/
1647bool EmulateInstructionMIPS64::Emulate_BXX_3ops_C(llvm::MCInst &insn) {
1648 bool success = false;
1649 uint32_t rs, rt;
1650 int64_t offset, pc, rs_val, rt_val,>
1651 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1652 uint32_t current_inst_size = m_insn_info->get(insn.getOpcode()).getSize();
1653
1654 rs = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1655 rt = m_reg_info->getEncodingValue(insn.getOperand(1).getReg());
1656 offset = insn.getOperand(2).getImm();
1657
1658 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1659 if (!success)
1660 return false;
1661
1662 rs_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1663 dwarf_zero_mips64 + rs, 0, &success);
1664 if (!success)
1665 return false;
1666
1667 rt_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1668 dwarf_zero_mips64 + rt, 0, &success);
1669 if (!success)
1670 return false;
1671
1672 if (op_name.equals_insensitive("BEQC") ||
1673 op_name.equals_insensitive("BEQC64")) {
1674 if (rs_val == rt_val)
1675 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1676 else
1677 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1678 } else if (op_name.equals_insensitive("BNEC") ||
1679 op_name.equals_insensitive("BNEC64")) {
1680 if (rs_val != rt_val)
1681 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1682 else
1683 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1684 } else if (op_name.equals_insensitive("BLTC") ||
1685 op_name.equals_insensitive("BLTC64")) {
1686 if (rs_val < rt_val)
1687 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1688 else
1689 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1690 } else if (op_name.equals_insensitive("BGEC64") ||
1691 op_name.equals_insensitive("BGEC")) {
1692 if (rs_val >= rt_val)
1693 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1694 else
1695 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1696 } else if (op_name.equals_insensitive("BLTUC") ||
1697 op_name.equals_insensitive("BLTUC64")) {
1698 if (rs_val < rt_val)
1699 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1700 else
1701 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1702 } else if (op_name.equals_insensitive("BGEUC") ||
1703 op_name.equals_insensitive("BGEUC64")) {
1704 if ((uint32_t)rs_val >= (uint32_t)rt_val)
1705 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1706 else
1707 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1708 } else if (op_name.equals_insensitive("BOVC")) {
1709 if (IsAdd64bitOverflow(rs_val, rt_val))
1710 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1711 else
1712 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1713 } else if (op_name.equals_insensitive("BNVC")) {
1714 if (!IsAdd64bitOverflow(rs_val, rt_val))
1715 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1716 else
1717 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1718 }
1719
1720 Context context;
1721 context.type = eContextRelativeBranchImmediate;
1722 context.SetImmediate(current_inst_size + offset);
1723
1724 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1725 target);
1726}
1727
1728/*
1729 Emulate below MIPS branch instructions.
1730 BLTZC, BLEZC, BGEZC, BGTZC, BEQZC, BNEZC : Compact Branches
1731*/
1732bool EmulateInstructionMIPS64::Emulate_BXX_2ops_C(llvm::MCInst &insn) {
1733 bool success = false;
1734 uint32_t rs;
1735 int64_t offset, pc,>
1736 int64_t rs_val;
1737 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1738 uint32_t current_inst_size = m_insn_info->get(insn.getOpcode()).getSize();
1739
1740 rs = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1741 offset = insn.getOperand(1).getImm();
1742
1743 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1744 if (!success)
1745 return false;
1746
1747 rs_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1748 dwarf_zero_mips64 + rs, 0, &success);
1749 if (!success)
1750 return false;
1751
1752 if (op_name.equals_insensitive("BLTZC") ||
1753 op_name.equals_insensitive("BLTZC64")) {
1754 if (rs_val < 0)
1755 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1756 else
1757 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1758 } else if (op_name.equals_insensitive("BLEZC") ||
1759 op_name.equals_insensitive("BLEZC64")) {
1760 if (rs_val <= 0)
1761 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1762 else
1763 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1764 } else if (op_name.equals_insensitive("BGEZC") ||
1765 op_name.equals_insensitive("BGEZC64")) {
1766 if (rs_val >= 0)
1767 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1768 else
1769 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1770 } else if (op_name.equals_insensitive("BGTZC") ||
1771 op_name.equals_insensitive("BGTZC64")) {
1772 if (rs_val > 0)
1773 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1774 else
1775 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1776 } else if (op_name.equals_insensitive("BEQZC") ||
1777 op_name.equals_insensitive("BEQZC64")) {
1778 if (rs_val == 0)
1779 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1780 else
1781 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1782 } else if (op_name.equals_insensitive("BNEZC") ||
1783 op_name.equals_insensitive("BNEZC64")) {
1784 if (rs_val != 0)
1785 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
1786 else
1787 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4;
1788 }
1789
1790 Context context;
1791 context.type = eContextRelativeBranchImmediate;
1792 context.SetImmediate(current_inst_size + offset);
1793
1794 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1795 target);
1796}
1797
1798bool EmulateInstructionMIPS64::Emulate_J(llvm::MCInst &insn) {
1799 bool success = false;
1800 uint64_t offset, pc;
1801
1802 /*
1803 * J offset
1804 * offset = sign_ext (offset << 2)
1805 * PC = PC[63-28] | offset
1806 */
1807 offset = insn.getOperand(0).getImm();
1808
1809 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1810 if (!success)
1811 return false;
1812
1813 /* This is a PC-region branch and not PC-relative */
1814 pc = (pc & 0xFFFFFFFFF0000000ULL) | offset;
1815
1816 Context context;
1817
1818 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1819 pc);
1820}
1821
1822bool EmulateInstructionMIPS64::Emulate_JAL(llvm::MCInst &insn) {
1823 bool success = false;
1824 uint64_t offset, target, pc;
1825
1826 /*
1827 * JAL offset
1828 * offset = sign_ext (offset << 2)
1829 * PC = PC[63-28] | offset
1830 */
1831 offset = insn.getOperand(0).getImm();
1832
1833 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1834 if (!success)
1835 return false;
1836
1837 /* This is a PC-region branch and not PC-relative */
1838 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc & 0xFFFFFFFFF0000000ULL) | offset;
1839
1840 Context context;
1841
1842 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1843 target))
1844 return false;
1845
1846 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_ra_mips64,
1847 pc + 8))
1848 return false;
1849
1850 return true;
1851}
1852
1853bool EmulateInstructionMIPS64::Emulate_JALR(llvm::MCInst &insn) {
1854 bool success = false;
1855 uint32_t rs, rt;
1856 uint64_t pc, rs_val;
1857
1858 /*
1859 * JALR rt, rs
1860 * GPR[rt] = PC + 8
1861 * PC = GPR[rs]
1862 */
1863 rt = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1864 rs = m_reg_info->getEncodingValue(insn.getOperand(1).getReg());
1865
1866 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1867 if (!success)
1868 return false;
1869
1870 rs_val = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips64 + rs, 0,
1871 &success);
1872 if (!success)
1873 return false;
1874
1875 Context context;
1876
1877 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1878 rs_val))
1879 return false;
1880
1881 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF,
1882 dwarf_zero_mips64 + rt, pc + 8))
1883 return false;
1884
1885 return true;
1886}
1887
1888bool EmulateInstructionMIPS64::Emulate_JIALC(llvm::MCInst &insn) {
1889 bool success = false;
1890 uint32_t rt;
1891 int64_t target, offset, pc, rt_val;
1892
1893 /*
1894 * JIALC rt, offset
1895 * offset = sign_ext (offset)
1896 * PC = GPR[rt] + offset
1897 * RA = PC + 4
1898 */
1899 rt = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1900 offset = insn.getOperand(1).getImm();
1901
1902 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1903 if (!success)
1904 return false;
1905
1906 rt_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1907 dwarf_zero_mips64 + rt, 0, &success);
1908 if (!success)
1909 return false;
1910
1911 + offset;
1912
1913 Context context;
1914
1915 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1916 target))
1917 return false;
1918
1919 if (!WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_ra_mips64,
1920 pc + 4))
1921 return false;
1922
1923 return true;
1924}
1925
1926bool EmulateInstructionMIPS64::Emulate_JIC(llvm::MCInst &insn) {
1927 bool success = false;
1928 uint32_t rt;
1929 int64_t target, offset, rt_val;
1930
1931 /*
1932 * JIC rt, offset
1933 * offset = sign_ext (offset)
1934 * PC = GPR[rt] + offset
1935 */
1936 rt = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1937 offset = insn.getOperand(1).getImm();
1938
1939 rt_val = (int64_t)ReadRegisterUnsigned(eRegisterKindDWARF,
1940 dwarf_zero_mips64 + rt, 0, &success);
1941 if (!success)
1942 return false;
1943
1944 + offset;
1945
1946 Context context;
1947
1948 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1949 target);
1950}
1951
1952bool EmulateInstructionMIPS64::Emulate_JR(llvm::MCInst &insn) {
1953 bool success = false;
1954 uint32_t rs;
1955 uint64_t rs_val;
1956
1957 /*
1958 * JR rs
1959 * PC = GPR[rs]
1960 */
1961 rs = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1962
1963 rs_val = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips64 + rs, 0,
1964 &success);
1965 if (!success)
1966 return false;
1967
1968 Context context;
1969
1970 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
1971 rs_val);
1972}
1973
1974/*
1975 Emulate Branch on FP True/False
1976 BC1F, BC1FL : Branch on FP False (L stands for branch likely)
1977 BC1T, BC1TL : Branch on FP True (L stands for branch likely)
1978*/
1979bool EmulateInstructionMIPS64::Emulate_FP_branch(llvm::MCInst &insn) {
1980 bool success = false;
1981 uint32_t cc, fcsr;
1982 int64_t pc, offset,>
1983 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
1984
1985 /*
1986 * BC1F cc, offset
1987 * condition <- (FPConditionCode(cc) == 0)
1988 * if condition then
1989 * offset = sign_ext (offset)
1990 * PC = PC + offset
1991 */
1992 cc = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
1993 offset = insn.getOperand(1).getImm();
1994
1995 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
1996 if (!success)
1997 return false;
1998
1999 fcsr =
2000 ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_fcsr_mips64, 0, &success);
2001 if (!success)
2002 return false;
2003
2004 /* fcsr[23], fcsr[25-31] are vaild condition bits */
2005 fcsr = ((fcsr >> 24) & 0xfe) | ((fcsr >> 23) & 0x01);
2006
2007 if (op_name.equals_insensitive("BC1F") ||
2008 op_name.equals_insensitive("BC1FL")) {
2009 if ((fcsr & (1 << cc)) == 0)
2010 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2011 else
2012 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2013 } else if (op_name.equals_insensitive("BC1T") ||
2014 op_name.equals_insensitive("BC1TL")) {
2015 if ((fcsr & (1 << cc)) != 0)
2016 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2017 else
2018 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2019 }
2020
2021 Context context;
2022
2023 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
2024 target);
2025}
2026
2027bool EmulateInstructionMIPS64::Emulate_BC1EQZ(llvm::MCInst &insn) {
2028 bool success = false;
2029 uint32_t ft;
2030 uint64_t ft_val;
2031 int64_t target, pc, offset;
2032
2033 /*
2034 * BC1EQZ ft, offset
2035 * condition <- (FPR[ft].bit0 == 0)
2036 * if condition then
2037 * offset = sign_ext (offset)
2038 * PC = PC + 4 + offset
2039 */
2040 ft = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
2041 offset = insn.getOperand(1).getImm();
2042
2043 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
2044 if (!success)
2045 return false;
2046
2047 ft_val = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips64 + ft, 0,
2048 &success);
2049 if (!success)
2050 return false;
2051
2052 if ((ft_val & 1) == 0)
2053 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4 + offset;
2054 else
2055 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2056
2057 Context context;
2058
2059 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
2060 target);
2061}
2062
2063bool EmulateInstructionMIPS64::Emulate_BC1NEZ(llvm::MCInst &insn) {
2064 bool success = false;
2065 uint32_t ft;
2066 uint64_t ft_val;
2067 int64_t target, pc, offset;
2068
2069 /*
2070 * BC1NEZ ft, offset
2071 * condition <- (FPR[ft].bit0 != 0)
2072 * if condition then
2073 * offset = sign_ext (offset)
2074 * PC = PC + 4 + offset
2075 */
2076 ft = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
2077 offset = insn.getOperand(1).getImm();
2078
2079 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
2080 if (!success)
2081 return false;
2082
2083 ft_val = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips64 + ft, 0,
2084 &success);
2085 if (!success)
2086 return false;
2087
2088 if ((ft_val & 1) != 0)
2089 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 4 + offset;
2090 else
2091 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2092
2093 Context context;
2094
2095 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
2096 target);
2097}
2098
2099/*
2100 Emulate MIPS-3D Branch instructions
2101 BC1ANY2F, BC1ANY2T : Branch on Any of Two Floating Point Condition Codes
2102 False/True
2103 BC1ANY4F, BC1ANY4T : Branch on Any of Four Floating Point Condition Codes
2104 False/True
2105*/
2106bool EmulateInstructionMIPS64::Emulate_3D_branch(llvm::MCInst &insn) {
2107 bool success = false;
2108 uint32_t cc, fcsr;
2109 int64_t pc, offset,>
2110 llvm::StringRef op_name = m_insn_info->getName(insn.getOpcode());
2111
2112 cc = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
2113 offset = insn.getOperand(1).getImm();
2114
2115 pc = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
2116 if (!success)
2117 return false;
2118
2119 fcsr = (uint32_t)ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_fcsr_mips64,
2120 0, &success);
2121 if (!success)
2122 return false;
2123
2124 /* fcsr[23], fcsr[25-31] are vaild condition bits */
2125 fcsr = ((fcsr >> 24) & 0xfe) | ((fcsr >> 23) & 0x01);
2126
2127 if (op_name.equals_insensitive("BC1ANY2F")) {
2128 /* if any one bit is 0 */
2129 if (((fcsr >> cc) & 3) != 3)
2130 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2131 else
2132 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2133 } else if (op_name.equals_insensitive("BC1ANY2T")) {
2134 /* if any one bit is 1 */
2135 if (((fcsr >> cc) & 3) != 0)
2136 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2137 else
2138 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2139 } else if (op_name.equals_insensitive("BC1ANY4F")) {
2140 /* if any one bit is 0 */
2141 if (((fcsr >> cc) & 0xf) != 0xf)
2142 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2143 else
2144 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2145 } else if (op_name.equals_insensitive("BC1ANY4T")) {
2146 /* if any one bit is 1 */
2147 if (((fcsr >> cc) & 0xf) != 0)
2148 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2149 else
2150 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2151 }
2152
2153 Context context;
2154
2155 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
2156 target);
2157}
2158
2159bool EmulateInstructionMIPS64::Emulate_BNZB(llvm::MCInst &insn) {
2160 return Emulate_MSA_Branch_DF(insn, 1, true);
2161}
2162
2163bool EmulateInstructionMIPS64::Emulate_BNZH(llvm::MCInst &insn) {
2164 return Emulate_MSA_Branch_DF(insn, 2, true);
2165}
2166
2167bool EmulateInstructionMIPS64::Emulate_BNZW(llvm::MCInst &insn) {
2168 return Emulate_MSA_Branch_DF(insn, 4, true);
2169}
2170
2171bool EmulateInstructionMIPS64::Emulate_BNZD(llvm::MCInst &insn) {
2172 return Emulate_MSA_Branch_DF(insn, 8, true);
2173}
2174
2175bool EmulateInstructionMIPS64::Emulate_BZB(llvm::MCInst &insn) {
2176 return Emulate_MSA_Branch_DF(insn, 1, false);
2177}
2178
2179bool EmulateInstructionMIPS64::Emulate_BZH(llvm::MCInst &insn) {
2180 return Emulate_MSA_Branch_DF(insn, 2, false);
2181}
2182
2183bool EmulateInstructionMIPS64::Emulate_BZW(llvm::MCInst &insn) {
2184 return Emulate_MSA_Branch_DF(insn, 4, false);
2185}
2186
2187bool EmulateInstructionMIPS64::Emulate_BZD(llvm::MCInst &insn) {
2188 return Emulate_MSA_Branch_DF(insn, 8, false);
2189}
2190
2191bool EmulateInstructionMIPS64::Emulate_MSA_Branch_DF(llvm::MCInst &insn,
2192 int element_byte_size,
2193 bool bnz) {
2194 bool success = false, branch_hit = true;
2195 int64_t>
2196 RegisterValue reg_value;
2197 const uint8_t *ptr = nullptr;
2198
2199 uint32_t wt = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
2200 int64_t offset = insn.getOperand(1).getImm();
2201
2202 int64_t pc =
2203 ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
2204 if (!success)
2205 return false;
2206
2207 if (ReadRegister(eRegisterKindDWARF, dwarf_w0_mips64 + wt, reg_value))
2208 ptr = (const uint8_t *)reg_value.GetBytes();
2209 else
2210 return false;
2211
2212 for (int i = 0; i < 16 / element_byte_size; i++) {
2213 switch (element_byte_size) {
2214 case 1:
2215 if ((*ptr == 0 && bnz) || (*ptr != 0 && !bnz))
2216 branch_hit = false;
2217 break;
2218 case 2:
2219 if ((*(const uint16_t *)ptr == 0 && bnz) ||
2220 (*(const uint16_t *)ptr != 0 && !bnz))
2221 branch_hit = false;
2222 break;
2223 case 4:
2224 if ((*(const uint32_t *)ptr == 0 && bnz) ||
2225 (*(const uint32_t *)ptr != 0 && !bnz))
2226 branch_hit = false;
2227 break;
2228 case 8:
2229 if ((*(const uint64_t *)ptr == 0 && bnz) ||
2230 (*(const uint64_t *)ptr != 0 && !bnz))
2231 branch_hit = false;
2232 break;
2233 }
2234 if (!branch_hit)
2235 break;
2236 ptr = ptr + element_byte_size;
2237 }
2238
2239 if (branch_hit)
2240 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2241 else
2242 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2243
2244 Context context;
2245 context.type = eContextRelativeBranchImmediate;
2246
2247 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
2248 target);
2249}
2250
2251bool EmulateInstructionMIPS64::Emulate_BNZV(llvm::MCInst &insn) {
2252 return Emulate_MSA_Branch_V(insn, true);
2253}
2254
2255bool EmulateInstructionMIPS64::Emulate_BZV(llvm::MCInst &insn) {
2256 return Emulate_MSA_Branch_V(insn, false);
2257}
2258
2259bool EmulateInstructionMIPS64::Emulate_MSA_Branch_V(llvm::MCInst &insn,
2260 bool bnz) {
2261 bool success = false;
2262 int64_t>
2263 llvm::APInt wr_val = llvm::APInt::getZero(128);
2264 llvm::APInt fail_value = llvm::APInt::getMaxValue(128);
2265 llvm::APInt zero_value = llvm::APInt::getZero(128);
2266 RegisterValue reg_value;
2267
2268 uint32_t wt = m_reg_info->getEncodingValue(insn.getOperand(0).getReg());
2269 int64_t offset = insn.getOperand(1).getImm();
2270
2271 int64_t pc =
2272 ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_pc_mips64, 0, &success);
2273 if (!success)
2274 return false;
2275
2276 if (ReadRegister(eRegisterKindDWARF, dwarf_w0_mips64 + wt, reg_value))
2277 wr_val = reg_value.GetAsUInt128(fail_value);
2278 else
2279 return false;
2280
2281 if ((llvm::APInt::isSameValue(zero_value, wr_val) && !bnz) ||
2282 (!llvm::APInt::isSameValue(zero_value, wr_val) && bnz))
2283 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + offset;
2284 else
2285 class="code hl_enumvalue" href="CompactUnwindInfo_8cpp.html#ab445e43b4dd530f66e88bd25b4a73501a0d008574886a382d46ba2616c506af41">pc + 8;
2286
2287 Context context;
2288 context.type = eContextRelativeBranchImmediate;
2289
2290 return WriteRegisterUnsigned(context, eRegisterKindDWARF, dwarf_pc_mips64,
2291 target);
2292}
2293
2294bool EmulateInstructionMIPS64::Emulate_LDST_Imm(llvm::MCInst &insn) {
2295 bool success = false;
2296 uint32_t base;
2297 int64_t imm, address;
2298 Context bad_vaddr_context;
2299
2300 uint32_t num_operands = insn.getNumOperands();
2301 base =
2302 m_reg_info->getEncodingValue(insn.getOperand(num_operands - 2).getReg());
2303 imm = insn.getOperand(num_operands - 1).getImm();
2304
2305 if (!GetRegisterInfo(eRegisterKindDWARF, dwarf_zero_mips + base))
2306 return false;
2307
2308 /* read base register */
2309 address = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips + base, 0,
2310 &success);
2311 if (!success)
2312 return false;
2313
2314 /* destination address */
2315 address = address + imm;
2316
2317 /* Set the bad_vaddr register with base address used in the instruction */
2318 bad_vaddr_context.type = eContextInvalid;
2319 WriteRegisterUnsigned(bad_vaddr_context, eRegisterKindDWARF, dwarf_bad_mips,
2320 address);
2321
2322 return true;
2323}
2324
2325bool EmulateInstructionMIPS64::Emulate_LDST_Reg(llvm::MCInst &insn) {
2326 bool success = false;
2327 uint32_t base, index;
2328 int64_t address, index_address;
2329 Context bad_vaddr_context;
2330
2331 uint32_t num_operands = insn.getNumOperands();
2332 base =
2333 m_reg_info->getEncodingValue(insn.getOperand(num_operands - 2).getReg());
2334 index =
2335 m_reg_info->getEncodingValue(insn.getOperand(num_operands - 1).getReg());
2336
2337 if (!GetRegisterInfo(eRegisterKindDWARF, dwarf_zero_mips + base))
2338 return false;
2339
2340 if (!GetRegisterInfo(eRegisterKindDWARF, dwarf_zero_mips + index))
2341 return false;
2342
2343 /* read base register */
2344 address = ReadRegisterUnsigned(eRegisterKindDWARF, dwarf_zero_mips + base, 0,
2345 &success);
2346 if (!success)
2347 return false;
2348
2349 /* read index register */
2350 index_address = ReadRegisterUnsigned(eRegisterKindDWARF,
2351 dwarf_zero_mips + index, 0, &success);
2352 if (!success)
2353 return false;
2354
2355 /* destination address */
2356 address = address + index_address;
2357
2358 /* Set the bad_vaddr register with base address used in the instruction */
2359 bad_vaddr_context.type = eContextInvalid;
2360 WriteRegisterUnsigned(bad_vaddr_context, eRegisterKindDWARF, dwarf_bad_mips,
2361 address);
2362
2363 return true;
2364}
error
static llvm::raw_ostream & error(Stream &strm)
Definition CommandReturnObject.cpp:18
IsAdd64bitOverflow
static int IsAdd64bitOverflow(int64_t a, int64_t b)
Definition EmulateInstructionMIPS64.cpp:1637
IsAdd64bitOverflow
static int IsAdd64bitOverflow(int32_t a, int32_t b)
Definition EmulateInstructionMIPS.cpp:1775
LLDB_PLUGIN_DEFINE_ADV
#define LLDB_PLUGIN_DEFINE_ADV(ClassName, PluginName)
Definition PluginManager.h:37
RegisterContext_mips.h
dwarf_bad_mips
@ dwarf_bad_mips
Definition RegisterContext_mips.h:55
dwarf_zero_mips
@ dwarf_zero_mips
Definition RegisterContext_mips.h:20
dwarf_f12_mips64
@ dwarf_f12_mips64
Definition RegisterContext_mips.h:182
dwarf_f25_mips64
@ dwarf_f25_mips64
Definition RegisterContext_mips.h:195
dwarf_w28_mips64
@ dwarf_w28_mips64
Definition RegisterContext_mips.h:234
dwarf_f28_mips64
@ dwarf_f28_mips64
Definition RegisterContext_mips.h:198
dwarf_r1_mips64
@ dwarf_r1_mips64
Definition RegisterContext_mips.h:133
dwarf_fcsr_mips64
@ dwarf_fcsr_mips64
Definition RegisterContext_mips.h:202
dwarf_f8_mips64
@ dwarf_f8_mips64
Definition RegisterContext_mips.h:178
dwarf_w24_mips64
@ dwarf_w24_mips64
Definition RegisterContext_mips.h:230
dwarf_gp_mips64
@ dwarf_gp_mips64
Definition RegisterContext_mips.h:160
dwarf_w23_mips64
@ dwarf_w23_mips64
Definition RegisterContext_mips.h:229
dwarf_f1_mips64
@ dwarf_f1_mips64
Definition RegisterContext_mips.h:171
dwarf_r7_mips64
@ dwarf_r7_mips64
Definition RegisterContext_mips.h:139
dwarf_w13_mips64
@ dwarf_w13_mips64
Definition RegisterContext_mips.h:219
dwarf_f6_mips64
@ dwarf_f6_mips64
Definition RegisterContext_mips.h:176
dwarf_f19_mips64
@ dwarf_f19_mips64
Definition RegisterContext_mips.h:189
dwarf_f20_mips64
@ dwarf_f20_mips64
Definition RegisterContext_mips.h:190
dwarf_sp_mips64
@ dwarf_sp_mips64
Definition RegisterContext_mips.h:161
dwarf_r13_mips64
@ dwarf_r13_mips64
Definition RegisterContext_mips.h:145
dwarf_w14_mips64
@ dwarf_w14_mips64
Definition RegisterContext_mips.h:220
dwarf_r30_mips64
@ dwarf_r30_mips64
Definition RegisterContext_mips.h:162
dwarf_lo_mips64
@ dwarf_lo_mips64
Definition RegisterContext_mips.h:165
dwarf_f17_mips64
@ dwarf_f17_mips64
Definition RegisterContext_mips.h:187
dwarf_w5_mips64
@ dwarf_w5_mips64
Definition RegisterContext_mips.h:211
dwarf_f2_mips64
@ dwarf_f2_mips64
Definition RegisterContext_mips.h:172
dwarf_w8_mips64
@ dwarf_w8_mips64
Definition RegisterContext_mips.h:214
dwarf_f5_mips64
@ dwarf_f5_mips64
Definition RegisterContext_mips.h:175
dwarf_f3_mips64
@ dwarf_f3_mips64
Definition RegisterContext_mips.h:173
dwarf_w22_mips64
@ dwarf_w22_mips64
Definition RegisterContext_mips.h:228
dwarf_f14_mips64
@ dwarf_f14_mips64
Definition RegisterContext_mips.h:184
dwarf_f26_mips64
@ dwarf_f26_mips64
Definition RegisterContext_mips.h:196
dwarf_w11_mips64
@ dwarf_w11_mips64
Definition RegisterContext_mips.h:217
dwarf_f7_mips64
@ dwarf_f7_mips64
Definition RegisterContext_mips.h:177
dwarf_r8_mips64
@ dwarf_r8_mips64
Definition RegisterContext_mips.h:140
dwarf_w9_mips64
@ dwarf_w9_mips64
Definition RegisterContext_mips.h:215
dwarf_w3_mips64
@ dwarf_w3_mips64
Definition RegisterContext_mips.h:209
dwarf_w27_mips64
@ dwarf_w27_mips64
Definition RegisterContext_mips.h:233
dwarf_w12_mips64
@ dwarf_w12_mips64
Definition RegisterContext_mips.h:218
dwarf_w0_mips64
@ dwarf_w0_mips64
Definition RegisterContext_mips.h:206
dwarf_f18_mips64
@ dwarf_f18_mips64
Definition RegisterContext_mips.h:188
dwarf_sr_mips64
@ dwarf_sr_mips64
Definition RegisterContext_mips.h:164
dwarf_hi_mips64
@ dwarf_hi_mips64
Definition RegisterContext_mips.h:166
dwarf_f31_mips64
@ dwarf_f31_mips64
Definition RegisterContext_mips.h:201
dwarf_r19_mips64
@ dwarf_r19_mips64
Definition RegisterContext_mips.h:151
dwarf_bad_mips64
@ dwarf_bad_mips64
Definition RegisterContext_mips.h:167
dwarf_f4_mips64
@ dwarf_f4_mips64
Definition RegisterContext_mips.h:174
dwarf_r3_mips64
@ dwarf_r3_mips64
Definition RegisterContext_mips.h:135
dwarf_r18_mips64
@ dwarf_r18_mips64
Definition RegisterContext_mips.h:150
dwarf_f30_mips64
@ dwarf_f30_mips64
Definition RegisterContext_mips.h:200
dwarf_f15_mips64
@ dwarf_f15_mips64
Definition RegisterContext_mips.h:185
dwarf_r27_mips64
@ dwarf_r27_mips64
Definition RegisterContext_mips.h:159
dwarf_mcsr_mips64
@ dwarf_mcsr_mips64
Definition RegisterContext_mips.h:238
dwarf_w19_mips64
@ dwarf_w19_mips64
Definition RegisterContext_mips.h:225
dwarf_w16_mips64
@ dwarf_w16_mips64
Definition RegisterContext_mips.h:222
dwarf_r5_mips64
@ dwarf_r5_mips64
Definition RegisterContext_mips.h:137
dwarf_cause_mips64
@ dwarf_cause_mips64
Definition RegisterContext_mips.h:168
dwarf_r4_mips64
@ dwarf_r4_mips64
Definition RegisterContext_mips.h:136
dwarf_f22_mips64
@ dwarf_f22_mips64
Definition RegisterContext_mips.h:192
dwarf_w4_mips64
@ dwarf_w4_mips64
Definition RegisterContext_mips.h:210
dwarf_r20_mips64
@ dwarf_r20_mips64
Definition RegisterContext_mips.h:152
dwarf_r11_mips64
@ dwarf_r11_mips64
Definition RegisterContext_mips.h:143
dwarf_w29_mips64
@ dwarf_w29_mips64
Definition RegisterContext_mips.h:235
dwarf_r21_mips64
@ dwarf_r21_mips64
Definition RegisterContext_mips.h:153
dwarf_r22_mips64
@ dwarf_r22_mips64
Definition RegisterContext_mips.h:154
dwarf_w7_mips64
@ dwarf_w7_mips64
Definition RegisterContext_mips.h:213
dwarf_f13_mips64
@ dwarf_f13_mips64
Definition RegisterContext_mips.h:183
dwarf_r6_mips64
@ dwarf_r6_mips64
Definition RegisterContext_mips.h:138
dwarf_pc_mips64
@ dwarf_pc_mips64
Definition RegisterContext_mips.h:169
dwarf_f9_mips64
@ dwarf_f9_mips64
Definition RegisterContext_mips.h:179
dwarf_f10_mips64
@ dwarf_f10_mips64
Definition RegisterContext_mips.h:180
dwarf_f23_mips64
@ dwarf_f23_mips64
Definition RegisterContext_mips.h:193
dwarf_r10_mips64
@ dwarf_r10_mips64
Definition RegisterContext_mips.h:142
dwarf_w31_mips64
@ dwarf_w31_mips64
Definition RegisterContext_mips.h:237
dwarf_w2_mips64
@ dwarf_w2_mips64
Definition RegisterContext_mips.h:208
dwarf_f21_mips64
@ dwarf_f21_mips64
Definition RegisterContext_mips.h:191
dwarf_w6_mips64
@ dwarf_w6_mips64
Definition RegisterContext_mips.h:212
dwarf_w1_mips64
@ dwarf_w1_mips64
Definition RegisterContext_mips.h:207
dwarf_f11_mips64
@ dwarf_f11_mips64
Definition RegisterContext_mips.h:181
dwarf_w26_mips64
@ dwarf_w26_mips64
Definition RegisterContext_mips.h:232
dwarf_w30_mips64
@ dwarf_w30_mips64
Definition RegisterContext_mips.h:236
dwarf_w18_mips64
@ dwarf_w18_mips64
Definition RegisterContext_mips.h:224
dwarf_w15_mips64
@ dwarf_w15_mips64
Definition RegisterContext_mips.h:221
dwarf_f24_mips64
@ dwarf_f24_mips64
Definition RegisterContext_mips.h:194
dwarf_f29_mips64
@ dwarf_f29_mips64
Definition RegisterContext_mips.h:199
dwarf_w17_mips64
@ dwarf_w17_mips64
Definition RegisterContext_mips.h:223
dwarf_w25_mips64
@ dwarf_w25_mips64
Definition RegisterContext_mips.h:231
dwarf_f27_mips64
@ dwarf_f27_mips64
Definition RegisterContext_mips.h:197
dwarf_f16_mips64
@ dwarf_f16_mips64
Definition RegisterContext_mips.h:186
dwarf_r24_mips64
@ dwarf_r24_mips64
Definition RegisterContext_mips.h:156
dwarf_r9_mips64
@ dwarf_r9_mips64
Definition RegisterContext_mips.h:141
dwarf_r23_mips64
@ dwarf_r23_mips64
Definition RegisterContext_mips.h:155
dwarf_mir_mips64
@ dwarf_mir_mips64
Definition RegisterContext_mips.h:239
dwarf_r14_mips64
@ dwarf_r14_mips64
Definition RegisterContext_mips.h:146
dwarf_config5_mips64
@ dwarf_config5_mips64
Definition RegisterContext_mips.h:240
dwarf_fir_mips64
@ dwarf_fir_mips64
Definition RegisterContext_mips.h:203
dwarf_r26_mips64
@ dwarf_r26_mips64
Definition RegisterContext_mips.h:158
dwarf_w21_mips64
@ dwarf_w21_mips64
Definition RegisterContext_mips.h:227
dwarf_f0_mips64
@ dwarf_f0_mips64
Definition RegisterContext_mips.h:170
dwarf_r2_mips64
@ dwarf_r2_mips64
Definition RegisterContext_mips.h:134
dwarf_r12_mips64
@ dwarf_r12_mips64
Definition RegisterContext_mips.h:144
dwarf_r17_mips64
@ dwarf_r17_mips64
Definition RegisterContext_mips.h:149
dwarf_r25_mips64
@ dwarf_r25_mips64
Definition RegisterContext_mips.h:157
dwarf_w20_mips64
@ dwarf_w20_mips64
Definition RegisterContext_mips.h:226
dwarf_w10_mips64
@ dwarf_w10_mips64
Definition RegisterContext_mips.h:216
dwarf_r15_mips64
@ dwarf_r15_mips64
Definition RegisterContext_mips.h:147
dwarf_r16_mips64
@ dwarf_r16_mips64
Definition RegisterContext_mips.h:148
dwarf_ra_mips64
@ dwarf_ra_mips64
Definition RegisterContext_mips.h:163
dwarf_zero_mips64
@ dwarf_zero_mips64
Definition RegisterContext_mips.h:132
EmulateInstructionMIPS64::m_asm_info
std::unique_ptr< llvm::MCAsmInfo > m_asm_info
Definition EmulateInstructionMIPS64.h:178
EmulateInstructionMIPS64::GetRegisterName
const char * GetRegisterName(unsigned reg_num, bool alternate_name)
Definition EmulateInstructionMIPS64.cpp:204
EmulateInstructionMIPS64::Emulate_FP_branch
bool Emulate_FP_branch(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1979
EmulateInstructionMIPS64::Emulate_JIALC
bool Emulate_JIALC(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1888
EmulateInstructionMIPS64::Emulate_BNZH
bool Emulate_BNZH(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2163
EmulateInstructionMIPS64::Emulate_BXX_2ops
bool Emulate_BXX_2ops(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1558
EmulateInstructionMIPS64::CreateInstance
static lldb_private::EmulateInstruction * CreateInstance(const lldb_private::ArchSpec &arch, lldb_private::InstructionType inst_type)
Definition EmulateInstructionMIPS64.cpp:186
EmulateInstructionMIPS64::Emulate_Bcond_Link_C
bool Emulate_Bcond_Link_C(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1490
EmulateInstructionMIPS64::Emulate_SD
bool Emulate_SD(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1124
EmulateInstructionMIPS64::Emulate_LD
bool Emulate_LD(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1180
EmulateInstructionMIPS64::Emulate_BAL
bool Emulate_BAL(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1424
EmulateInstructionMIPS64::Emulate_BC
bool Emulate_BC(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1614
EmulateInstructionMIPS64::Emulate_BXX_3ops_C
bool Emulate_BXX_3ops_C(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1647
EmulateInstructionMIPS64::Emulate_MSA_Branch_V
bool Emulate_MSA_Branch_V(llvm::MCInst &insn, bool bnz)
Definition EmulateInstructionMIPS64.cpp:2259
EmulateInstructionMIPS64::Emulate_BZD
bool Emulate_BZD(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2187
EmulateInstructionMIPS64::Emulate_BNZV
bool Emulate_BNZV(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2251
EmulateInstructionMIPS64::Emulate_BXX_3ops
bool Emulate_BXX_3ops(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1326
EmulateInstructionMIPS64::SetTargetTriple
bool SetTargetTriple(const lldb_private::ArchSpec &arch) override
Definition EmulateInstructionMIPS64.cpp:199
EmulateInstructionMIPS64::m_disasm
std::unique_ptr< llvm::MCDisassembler > m_disasm
Definition EmulateInstructionMIPS64.h:174
EmulateInstructionMIPS64::Emulate_JR
bool Emulate_JR(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1952
EmulateInstructionMIPS64::Emulate_JIC
bool Emulate_JIC(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1926
EmulateInstructionMIPS64::Emulate_LUI
bool Emulate_LUI(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1223
EmulateInstructionMIPS64::m_context
std::unique_ptr< llvm::MCContext > m_context
Definition EmulateInstructionMIPS64.h:179
EmulateInstructionMIPS64::GetOpcodeForInstruction
static MipsOpcode * GetOpcodeForInstruction(llvm::StringRef op_name)
Definition EmulateInstructionMIPS64.cpp:657
EmulateInstructionMIPS64::Emulate_BXX_2ops_C
bool Emulate_BXX_2ops_C(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1732
EmulateInstructionMIPS64::Emulate_BNZB
bool Emulate_BNZB(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2159
EmulateInstructionMIPS64::Emulate_3D_branch
bool Emulate_3D_branch(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2106
EmulateInstructionMIPS64::Emulate_BNZD
bool Emulate_BNZD(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2171
EmulateInstructionMIPS64::GetPluginDescriptionStatic
static llvm::StringRef GetPluginDescriptionStatic()
Definition EmulateInstructionMIPS64.cpp:181
EmulateInstructionMIPS64::SupportsEmulatingInstructionsOfTypeStatic
static bool SupportsEmulatingInstructionsOfTypeStatic(lldb_private::InstructionType inst_type)
Definition EmulateInstructionMIPS64.h:44
EmulateInstructionMIPS64::Emulate_LDST_Reg
bool Emulate_LDST_Reg(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2325
EmulateInstructionMIPS64::Emulate_LDST_Imm
bool Emulate_LDST_Imm(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2294
EmulateInstructionMIPS64::Emulate_BZW
bool Emulate_BZW(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2183
EmulateInstructionMIPS64::Emulate_DSUBU_DADDU
bool Emulate_DSUBU_DADDU(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1240
EmulateInstructionMIPS64::Emulate_BZB
bool Emulate_BZB(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2175
EmulateInstructionMIPS64::Emulate_JALR
bool Emulate_JALR(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1853
EmulateInstructionMIPS64::Emulate_DADDiu
bool Emulate_DADDiu(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1060
EmulateInstructionMIPS64::m_subtype_info
std::unique_ptr< llvm::MCSubtargetInfo > m_subtype_info
Definition EmulateInstructionMIPS64.h:175
EmulateInstructionMIPS64::m_insn_info
std::unique_ptr< llvm::MCInstrInfo > m_insn_info
Definition EmulateInstructionMIPS64.h:180
EmulateInstructionMIPS64::Emulate_BC1NEZ
bool Emulate_BC1NEZ(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2063
EmulateInstructionMIPS64::Emulate_MSA_Branch_DF
bool Emulate_MSA_Branch_DF(llvm::MCInst &insn, int element_byte_size, bool bnz)
Definition EmulateInstructionMIPS64.cpp:2191
EmulateInstructionMIPS64::m_reg_info
std::unique_ptr< llvm::MCRegisterInfo > m_reg_info
Definition EmulateInstructionMIPS64.h:176
EmulateInstructionMIPS64::Emulate_Bcond_Link
bool Emulate_Bcond_Link(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1378
EmulateInstructionMIPS64::Emulate_BC1EQZ
bool Emulate_BC1EQZ(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2027
EmulateInstructionMIPS64::Emulate_BZH
bool Emulate_BZH(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2179
EmulateInstructionMIPS64::Emulate_JAL
bool Emulate_JAL(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1822
EmulateInstructionMIPS64::Emulate_BZV
bool Emulate_BZV(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2255
EmulateInstructionMIPS64::CreateFunctionEntryUnwind
bool CreateFunctionEntryUnwind(lldb_private::UnwindPlan &unwind_plan) override
Definition EmulateInstructionMIPS64.cpp:1012
EmulateInstructionMIPS64::EmulateInstructionMIPS64
EmulateInstructionMIPS64(const lldb_private::ArchSpec &arch)
Definition EmulateInstructionMIPS64.cpp:63
EmulateInstructionMIPS64::Emulate_BALC
bool Emulate_BALC(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:1455
EmulateInstructionMIPS64::GetRegisterInfo
std::optional< lldb_private::RegisterInfo > GetRegisterInfo(lldb::RegisterKind reg_kind, uint32_t reg_num) override
Definition EmulateInstructionMIPS64.cpp:574
EmulateInstructionMIPS64::Emulate_BNZW
bool Emulate_BNZW(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.cpp:2167
EmulateInstructionMIPS64::GetPluginNameStatic
static llvm::StringRef GetPluginNameStatic()
Definition EmulateInstructionMIPS64.h:36
EmulateInstructionMIPS64::EvaluateInstruction
bool EvaluateInstruction(uint32_t evaluate_options) override
Definition EmulateInstructionMIPS64.cpp:945
lldb_private::ArchSpec
An architecture specification class.
Definition ArchSpec.h:32
lldb_private::ArchSpec::eCore_mips64el
@ eCore_mips64el
Definition ArchSpec.h:185
lldb_private::ArchSpec::eCore_mips64r5el
@ eCore_mips64r5el
Definition ArchSpec.h:188
lldb_private::ArchSpec::eCore_mips32
@ eCore_mips32
Definition ArchSpec.h:170
lldb_private::ArchSpec::eCore_mips32r5el
@ eCore_mips32r5el
Definition ArchSpec.h:178
lldb_private::ArchSpec::eCore_mips32r5
@ eCore_mips32r5
Definition ArchSpec.h:173
lldb_private::ArchSpec::eCore_mips32r6
@ eCore_mips32r6
Definition ArchSpec.h:174
lldb_private::ArchSpec::eCore_mips64r3
@ eCore_mips64r3
Definition ArchSpec.h:182
lldb_private::ArchSpec::eCore_mips64
@ eCore_mips64
Definition ArchSpec.h:180
lldb_private::ArchSpec::eCore_mips64r3el
@ eCore_mips64r3el
Definition ArchSpec.h:187
lldb_private::ArchSpec::eCore_mips64r6el
@ eCore_mips64r6el
Definition ArchSpec.h:189
lldb_private::ArchSpec::eCore_mips32r2
@ eCore_mips32r2
Definition ArchSpec.h:171
lldb_private::ArchSpec::eCore_mips32r3
@ eCore_mips32r3
Definition ArchSpec.h:172
lldb_private::ArchSpec::eCore_mips64r5
@ eCore_mips64r5
Definition ArchSpec.h:183
lldb_private::ArchSpec::eCore_mips32el
@ eCore_mips32el
Definition ArchSpec.h:175
lldb_private::ArchSpec::eCore_mips64r2el
@ eCore_mips64r2el
Definition ArchSpec.h:186
lldb_private::ArchSpec::eCore_mips32r6el
@ eCore_mips32r6el
Definition ArchSpec.h:179
lldb_private::ArchSpec::eCore_mips32r3el
@ eCore_mips32r3el
Definition ArchSpec.h:177
lldb_private::ArchSpec::eCore_mips64r6
@ eCore_mips64r6
Definition ArchSpec.h:184
lldb_private::ArchSpec::eCore_mips32r2el
@ eCore_mips32r2el
Definition ArchSpec.h:176
lldb_private::ArchSpec::eCore_mips64r2
@ eCore_mips64r2
Definition ArchSpec.h:181
lldb_private::ArchSpec::GetTriple
llvm::Triple & GetTriple()
Architecture triple accessor.
Definition ArchSpec.h:547
lldb_private::ArchSpec::eMIPSAse_micromips
@ eMIPSAse_micromips
Definition ArchSpec.h:63
lldb_private::ArchSpec::eMIPSAse_dsp
@ eMIPSAse_dsp
Definition ArchSpec.h:52
lldb_private::ArchSpec::eMIPSAse_msa
@ eMIPSAse_msa
Definition ArchSpec.h:61
lldb_private::ArchSpec::eMIPSAse_mips16
@ eMIPSAse_mips16
Definition ArchSpec.h:62
lldb_private::ArchSpec::eMIPSAse_dspr2
@ eMIPSAse_dspr2
Definition ArchSpec.h:53
lldb_private::ArchSpec::GetFlags
uint32_t GetFlags() const
Definition ArchSpec.h:618
lldb_private::ArchSpec::GetCore
Core GetCore() const
Definition ArchSpec.h:536
lldb_private::DataExtractor
An data extractor class.
Definition DataExtractor.h:52
lldb_private::DataExtractor::GetByteSize
virtual uint64_t GetByteSize() const
Get the number of bytes contained in this object.
Definition DataExtractor.h:279
lldb_private::DataExtractor::GetDataStart
const uint8_t * GetDataStart() const
Get the data start pointer.
Definition DataExtractor.h:432
lldb_private::EmulateInstruction
"lldb/Core/EmulateInstruction.h" A class that allows emulation of CPU opcodes.
Definition EmulateInstruction.h:129
lldb_private::EmulateInstruction::eContextRelativeBranchImmediate
@ eContextRelativeBranchImmediate
Definition EmulateInstruction.h:177
lldb_private::EmulateInstruction::eContextRegisterLoad
@ eContextRegisterLoad
Definition EmulateInstruction.h:174
lldb_private::EmulateInstruction::eContextImmediate
@ eContextImmediate
Definition EmulateInstruction.h:142
lldb_private::EmulateInstruction::eContextInvalid
@ eContextInvalid
Definition EmulateInstruction.h:136
lldb_private::EmulateInstruction::eContextAdjustStackPointer
@ eContextAdjustStackPointer
Definition EmulateInstruction.h:153
lldb_private::EmulateInstruction::eContextPushRegisterOnStack
@ eContextPushRegisterOnStack
Definition EmulateInstruction.h:146
lldb_private::EmulateInstruction::eContextReadOpcode
@ eContextReadOpcode
Definition EmulateInstruction.h:138
lldb_private::EmulateInstruction::GetByteOrder
lldb::ByteOrder GetByteOrder() const
Definition EmulateInstruction.h:471
lldb_private::EmulateInstruction::ReadRegister
std::optional< RegisterValue > ReadRegister(const RegisterInfo &reg_info)
Definition EmulateInstruction.cpp:75
lldb_private::EmulateInstruction::WriteRegister
bool WriteRegister(const Context &context, const RegisterInfo &ref_info, const RegisterValue &reg_value)
Definition EmulateInstruction.cpp:124
lldb_private::EmulateInstruction::WriteRegisterUnsigned
bool WriteRegisterUnsigned(const Context &context, const RegisterInfo &reg_info, uint64_t reg_value)
Definition EmulateInstruction.cpp:155
lldb_private::EmulateInstruction::WriteMemory
bool WriteMemory(const Context &context, lldb::addr_t addr, const void *src, size_t src_len)
Definition EmulateInstruction.cpp:210
lldb_private::EmulateInstruction::ReadMemoryUnsigned
uint64_t ReadMemoryUnsigned(const Context &context, lldb::addr_t addr, size_t byte_size, uint64_t fail_value, bool *success_ptr)
Definition EmulateInstruction.cpp:172
lldb_private::EmulateInstruction::EmulateInstruction
EmulateInstruction(const ArchSpec &arch)
Definition EmulateInstruction.cpp:72
lldb_private::EmulateInstruction::m_opcode
Opcode m_opcode
Definition EmulateInstruction.h:555
lldb_private::EmulateInstruction::ReadRegisterUnsigned
uint64_t ReadRegisterUnsigned(const RegisterInfo &reg_info, uint64_t fail_value, bool *success_ptr)
Definition EmulateInstruction.cpp:111
lldb_private::EmulateInstruction::m_addr
lldb::addr_t m_addr
Definition EmulateInstruction.h:554
lldb_private::PluginManager::RegisterPlugin
static bool RegisterPlugin(llvm::StringRef name, llvm::StringRef description, ABICreateInstance create_callback)
Definition PluginManager.cpp:704
lldb_private::PluginManager::UnregisterPlugin
static bool UnregisterPlugin(ABICreateInstance create_callback)
Definition PluginManager.cpp:710
lldb_private::RegisterValue
Definition RegisterValue.h:29
lldb_private::RegisterValue::GetAsUInt128
llvm::APInt GetAsUInt128(const llvm::APInt &fail_value, bool *success_ptr=nullptr) const
Definition RegisterValue.cpp:600
lldb_private::RegisterValue::GetBytes
const void * GetBytes() const
Definition RegisterValue.cpp:698
lldb_private::RegisterValue::BytesContainer
llvm::SmallVector< uint8_t, kTypicalRegisterByteSize > BytesContainer
Definition RegisterValue.h:41
lldb_private::Status
An error handling class.
Definition Status.h:118
lldb_private::UnwindPlan::Row::FAValue::SetIsRegisterPlusOffset
void SetIsRegisterPlusOffset(uint32_t reg_num, int32_t offset)
Definition UnwindPlan.h:240
lldb_private::UnwindPlan::Row
Definition UnwindPlan.h:55
lldb_private::UnwindPlan::Row::GetCFAValue
const FAValue & GetCFAValue() const
Definition UnwindPlan.h:365
lldb_private::UnwindPlan::Row::SetRegisterLocationToRegister
bool SetRegisterLocationToRegister(uint32_t reg_num, uint32_t other_reg_num, bool can_replace)
Definition UnwindPlan.cpp:340
lldb_private::UnwindPlan
Definition UnwindPlan.h:53
lldb_private::UnwindPlan::SetUnwindPlanForSignalTrap
void SetUnwindPlanForSignalTrap(lldb_private::LazyBool is_for_signal_trap)
Definition UnwindPlan.h:525
lldb_private::UnwindPlan::Clear
void Clear()
Definition UnwindPlan.h:531
lldb_private::UnwindPlan::SetRegisterKind
void SetRegisterKind(lldb::RegisterKind kind)
Definition UnwindPlan.h:462
lldb_private::UnwindPlan::SetReturnAddressRegister
void SetReturnAddressRegister(uint32_t regnum)
Definition UnwindPlan.h:464
lldb_private::UnwindPlan::AppendRow
void AppendRow(Row row)
Definition UnwindPlan.cpp:394
lldb_private::UnwindPlan::SetSourcedFromCompiler
void SetSourcedFromCompiler(lldb_private::LazyBool from_compiler)
Definition UnwindPlan.h:501
lldb_private::UnwindPlan::SetSourceName
void SetSourceName(const char *)
Definition UnwindPlan.cpp:565
lldb_private::UnwindPlan::SetUnwindPlanValidAtAllInstructions
void SetUnwindPlanValidAtAllInstructions(lldb_private::LazyBool valid_at_all_insn)
Definition UnwindPlan.h:513
LLDB_REGNUM_GENERIC_RA
#define LLDB_REGNUM_GENERIC_RA
Definition lldb-defines.h:59
LLDB_REGNUM_GENERIC_SP
#define LLDB_REGNUM_GENERIC_SP
Definition lldb-defines.h:57
LLDB_REGNUM_GENERIC_FLAGS
#define LLDB_REGNUM_GENERIC_FLAGS
Definition lldb-defines.h:60
LLDB_INVALID_ADDRESS
#define LLDB_INVALID_ADDRESS
Definition lldb-defines.h:82
LLDB_INVALID_REGNUM
#define LLDB_INVALID_REGNUM
Definition lldb-defines.h:90
LLDB_REGNUM_GENERIC_PC
#define LLDB_REGNUM_GENERIC_PC
Definition lldb-defines.h:56
LLDB_REGNUM_GENERIC_FP
#define LLDB_REGNUM_GENERIC_FP
Definition lldb-defines.h:58
lldb_private
A class that represents a running process on the host machine.
Definition SBAddressRange.h:14
lldb_private::eLazyBoolNo
@ eLazyBoolNo
Definition lldb-private-enumerations.h:119
lldb_private::eLazyBoolYes
@ eLazyBoolYes
Definition lldb-private-enumerations.h:120
lldb_private::InstructionType
InstructionType
Instruction types.
Definition lldb-private-enumerations.h:124
lldb_private::SignedBits
static int64_t SignedBits(const uint64_t value, const uint64_t msbit, const uint64_t lsbit)
Definition InstructionUtils.h:104
lldb::eFormatVectorOfUInt8
@ eFormatVectorOfUInt8
Definition lldb-enumerations.h:217
lldb::eEncodingVector
@ eEncodingVector
vector registers
Definition lldb-enumerations.h:184
lldb::eEncodingUint
@ eEncodingUint
unsigned integer
Definition lldb-enumerations.h:178
lldb::RegisterKind
RegisterKind
Register numbering types.
Definition lldb-enumerations.h:292
lldb::eRegisterKindGeneric
@ eRegisterKindGeneric
insn ptr reg, stack ptr reg, etc not specific to any particular target
Definition lldb-enumerations.h:298
lldb::eRegisterKindDWARF
@ eRegisterKindDWARF
the register numbers seen DWARF
Definition lldb-enumerations.h:296
EmulateInstructionMIPS64::MipsOpcode::callback
bool(EmulateInstructionMIPS64::* callback)(llvm::MCInst &insn)
Definition EmulateInstructionMIPS64.h:86
lldb_private::EmulateInstruction::Context
Definition EmulateInstruction.h:220
lldb_private::EmulateInstruction::Context::SetNoArgs
void SetNoArgs()
Definition EmulateInstruction.h:364
lldb_private::EmulateInstruction::Context::SetImmediate
void SetImmediate(uint64_t immediate)
Definition EmulateInstruction.h:333
lldb_private::EmulateInstruction::Context::SetRegisterPlusOffset
void SetRegisterPlusOffset(RegisterInfo base_reg, int64_t signed_offset)
Definition EmulateInstruction.h:285
lldb_private::EmulateInstruction::Context::SetImmediateSigned
void SetImmediateSigned(int64_t signed_immediate)
Definition EmulateInstruction.h:338
lldb_private::EmulateInstruction::Context::SetRegisterToRegisterPlusOffset
void SetRegisterToRegisterPlusOffset(RegisterInfo data_reg, RegisterInfo base_reg, int64_t offset)
Definition EmulateInstruction.h:298
lldb_private::EmulateInstruction::Context::type
ContextType type
Definition EmulateInstruction.h:221
lldb_private::RegisterInfo
Every register is described in detail including its name, alternate name (optional),...
Definition RegisterInfo.h:23
lldb_private::RegisterInfo::encoding
lldb::Encoding encoding
Encoding of the register bits.
Definition RegisterInfo.h:36
lldb_private::RegisterInfo::alt_name
const char * alt_name
Alternate name of this register, can be NULL.
Definition RegisterInfo.h:27
lldb_private::RegisterInfo::byte_size
uint32_t byte_size
Size in bytes of the register.
Definition RegisterInfo.h:29
lldb_private::RegisterInfo::kinds
uint32_t kinds[lldb::kNumRegisterKinds]
Holds all of the various register numbers for all register kinds.
Definition RegisterInfo.h:40
lldb_private::RegisterInfo::name
const char * name
Name of this register, can't be NULL.
Definition RegisterInfo.h:25
lldb_private::RegisterInfo::format
lldb::Format format
Default display format.
Definition RegisterInfo.h:38
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