1 //===-- GDBRemoteRegisterContext.cpp ----------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "GDBRemoteRegisterContext.h" 11 12 // C Includes 13 // C++ Includes 14 // Other libraries and framework includes 15 #include "lldb/Target/ExecutionContext.h" 16 #include "lldb/Target/Target.h" 17 #include "lldb/Utility/DataBufferHeap.h" 18 #include "lldb/Utility/DataExtractor.h" 19 #include "lldb/Utility/RegisterValue.h" 20 #include "lldb/Utility/Scalar.h" 21 #include "lldb/Utility/StreamString.h" 22 // Project includes 23 #include "ProcessGDBRemote.h" 24 #include "ProcessGDBRemoteLog.h" 25 #include "ThreadGDBRemote.h" 26 #include "Utility/ARM_DWARF_Registers.h" 27 #include "Utility/ARM_ehframe_Registers.h" 28 #include "lldb/Utility/StringExtractorGDBRemote.h" 29 30 using namespace lldb; 31 using namespace lldb_private; 32 using namespace lldb_private::process_gdb_remote; 33 34 //---------------------------------------------------------------------- 35 // GDBRemoteRegisterContext constructor 36 //---------------------------------------------------------------------- 37 GDBRemoteRegisterContext::GDBRemoteRegisterContext( 38 ThreadGDBRemote &thread, uint32_t concrete_frame_idx, 39 GDBRemoteDynamicRegisterInfo ®_info, bool read_all_at_once) 40 : RegisterContext(thread, concrete_frame_idx), m_reg_info(reg_info), 41 m_reg_valid(), m_reg_data(), m_read_all_at_once(read_all_at_once) { 42 // Resize our vector of bools to contain one bool for every register. We will 43 // use these boolean values to know when a register value is valid in 44 // m_reg_data. 45 m_reg_valid.resize(reg_info.GetNumRegisters()); 46 47 // Make a heap based buffer that is big enough to store all registers 48 DataBufferSP reg_data_sp( 49 new DataBufferHeap(reg_info.GetRegisterDataByteSize(), 0)); 50 m_reg_data.SetData(reg_data_sp); 51 m_reg_data.SetByteOrder(thread.GetProcess()->GetByteOrder()); 52 } 53 54 //---------------------------------------------------------------------- 55 // Destructor 56 //---------------------------------------------------------------------- 57 GDBRemoteRegisterContext::~GDBRemoteRegisterContext() {} 58 59 void GDBRemoteRegisterContext::InvalidateAllRegisters() { 60 SetAllRegisterValid(false); 61 } 62 63 void GDBRemoteRegisterContext::SetAllRegisterValid(bool b) { 64 std::vector<bool>::iterator pos, end = m_reg_valid.end(); 65 for (pos = m_reg_valid.begin(); pos != end; ++pos) 66 *pos = b; 67 } 68 69 size_t GDBRemoteRegisterContext::GetRegisterCount() { 70 return m_reg_info.GetNumRegisters(); 71 } 72 73 const RegisterInfo * 74 GDBRemoteRegisterContext::GetRegisterInfoAtIndex(size_t reg) { 75 RegisterInfo *reg_info = m_reg_info.GetRegisterInfoAtIndex(reg); 76 77 if (reg_info && reg_info->dynamic_size_dwarf_expr_bytes) { 78 const ArchSpec &arch = m_thread.GetProcess()->GetTarget().GetArchitecture(); 79 uint8_t reg_size = UpdateDynamicRegisterSize(arch, reg_info); 80 reg_info->byte_size = reg_size; 81 } 82 return reg_info; 83 } 84 85 size_t GDBRemoteRegisterContext::GetRegisterSetCount() { 86 return m_reg_info.GetNumRegisterSets(); 87 } 88 89 const RegisterSet *GDBRemoteRegisterContext::GetRegisterSet(size_t reg_set) { 90 return m_reg_info.GetRegisterSet(reg_set); 91 } 92 93 bool GDBRemoteRegisterContext::ReadRegister(const RegisterInfo *reg_info, 94 RegisterValue &value) { 95 // Read the register 96 if (ReadRegisterBytes(reg_info, m_reg_data)) { 97 const bool partial_data_ok = false; 98 Status error(value.SetValueFromData( 99 reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok)); 100 return error.Success(); 101 } 102 return false; 103 } 104 105 bool GDBRemoteRegisterContext::PrivateSetRegisterValue( 106 uint32_t reg, llvm::ArrayRef<uint8_t> data) { 107 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg); 108 if (reg_info == NULL) 109 return false; 110 111 // Invalidate if needed 112 InvalidateIfNeeded(false); 113 114 const size_t reg_byte_size = reg_info->byte_size; 115 memcpy(const_cast<uint8_t *>( 116 m_reg_data.PeekData(reg_info->byte_offset, reg_byte_size)), 117 data.data(), std::min(data.size(), reg_byte_size)); 118 bool success = data.size() >= reg_byte_size; 119 if (success) { 120 SetRegisterIsValid(reg, true); 121 } else if (data.size() > 0) { 122 // Only set register is valid to false if we copied some bytes, else leave 123 // it as it was. 124 SetRegisterIsValid(reg, false); 125 } 126 return success; 127 } 128 129 bool GDBRemoteRegisterContext::PrivateSetRegisterValue(uint32_t reg, 130 uint64_t new_reg_val) { 131 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg); 132 if (reg_info == NULL) 133 return false; 134 135 // Early in process startup, we can get a thread that has an invalid byte 136 // order because the process hasn't been completely set up yet (see the ctor 137 // where the byte order is setfrom the process). If that's the case, we 138 // can't set the value here. 139 if (m_reg_data.GetByteOrder() == eByteOrderInvalid) { 140 return false; 141 } 142 143 // Invalidate if needed 144 InvalidateIfNeeded(false); 145 146 DataBufferSP buffer_sp(new DataBufferHeap(&new_reg_val, sizeof(new_reg_val))); 147 DataExtractor data(buffer_sp, endian::InlHostByteOrder(), sizeof(void *)); 148 149 // If our register context and our register info disagree, which should never 150 // happen, don't overwrite past the end of the buffer. 151 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 152 return false; 153 154 // Grab a pointer to where we are going to put this register 155 uint8_t *dst = const_cast<uint8_t *>( 156 m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 157 158 if (dst == NULL) 159 return false; 160 161 if (data.CopyByteOrderedData(0, // src offset 162 reg_info->byte_size, // src length 163 dst, // dst 164 reg_info->byte_size, // dst length 165 m_reg_data.GetByteOrder())) // dst byte order 166 { 167 SetRegisterIsValid(reg, true); 168 return true; 169 } 170 return false; 171 } 172 173 // Helper function for GDBRemoteRegisterContext::ReadRegisterBytes(). 174 bool GDBRemoteRegisterContext::GetPrimordialRegister( 175 const RegisterInfo *reg_info, GDBRemoteCommunicationClient &gdb_comm) { 176 const uint32_t lldb_reg = reg_info->kinds[eRegisterKindLLDB]; 177 const uint32_t remote_reg = reg_info->kinds[eRegisterKindProcessPlugin]; 178 179 if (DataBufferSP buffer_sp = 180 gdb_comm.ReadRegister(m_thread.GetProtocolID(), remote_reg)) 181 return PrivateSetRegisterValue( 182 lldb_reg, llvm::ArrayRef<uint8_t>(buffer_sp->GetBytes(), 183 buffer_sp->GetByteSize())); 184 return false; 185 } 186 187 bool GDBRemoteRegisterContext::ReadRegisterBytes(const RegisterInfo *reg_info, 188 DataExtractor &data) { 189 ExecutionContext exe_ctx(CalculateThread()); 190 191 Process *process = exe_ctx.GetProcessPtr(); 192 Thread *thread = exe_ctx.GetThreadPtr(); 193 if (process == NULL || thread == NULL) 194 return false; 195 196 GDBRemoteCommunicationClient &gdb_comm( 197 ((ProcessGDBRemote *)process)->GetGDBRemote()); 198 199 InvalidateIfNeeded(false); 200 201 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 202 203 if (!GetRegisterIsValid(reg)) { 204 if (m_read_all_at_once) { 205 if (DataBufferSP buffer_sp = 206 gdb_comm.ReadAllRegisters(m_thread.GetProtocolID())) { 207 memcpy(const_cast<uint8_t *>(m_reg_data.GetDataStart()), 208 buffer_sp->GetBytes(), 209 std::min(buffer_sp->GetByteSize(), m_reg_data.GetByteSize())); 210 if (buffer_sp->GetByteSize() >= m_reg_data.GetByteSize()) { 211 SetAllRegisterValid(true); 212 return true; 213 } 214 } 215 return false; 216 } 217 if (reg_info->value_regs) { 218 // Process this composite register request by delegating to the 219 // constituent primordial registers. 220 221 // Index of the primordial register. 222 bool success = true; 223 for (uint32_t idx = 0; success; ++idx) { 224 const uint32_t prim_reg = reg_info->value_regs[idx]; 225 if (prim_reg == LLDB_INVALID_REGNUM) 226 break; 227 // We have a valid primordial register as our constituent. Grab the 228 // corresponding register info. 229 const RegisterInfo *prim_reg_info = GetRegisterInfoAtIndex(prim_reg); 230 if (prim_reg_info == NULL) 231 success = false; 232 else { 233 // Read the containing register if it hasn't already been read 234 if (!GetRegisterIsValid(prim_reg)) 235 success = GetPrimordialRegister(prim_reg_info, gdb_comm); 236 } 237 } 238 239 if (success) { 240 // If we reach this point, all primordial register requests have 241 // succeeded. Validate this composite register. 242 SetRegisterIsValid(reg_info, true); 243 } 244 } else { 245 // Get each register individually 246 GetPrimordialRegister(reg_info, gdb_comm); 247 } 248 249 // Make sure we got a valid register value after reading it 250 if (!GetRegisterIsValid(reg)) 251 return false; 252 } 253 254 if (&data != &m_reg_data) { 255 #if defined(LLDB_CONFIGURATION_DEBUG) 256 assert(m_reg_data.GetByteSize() >= 257 reg_info->byte_offset + reg_info->byte_size); 258 #endif 259 // If our register context and our register info disagree, which should 260 // never happen, don't read past the end of the buffer. 261 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 262 return false; 263 264 // If we aren't extracting into our own buffer (which only happens when 265 // this function is called from ReadRegisterValue(uint32_t, Scalar&)) then 266 // we transfer bytes from our buffer into the data buffer that was passed 267 // in 268 269 data.SetByteOrder(m_reg_data.GetByteOrder()); 270 data.SetData(m_reg_data, reg_info->byte_offset, reg_info->byte_size); 271 } 272 return true; 273 } 274 275 bool GDBRemoteRegisterContext::WriteRegister(const RegisterInfo *reg_info, 276 const RegisterValue &value) { 277 DataExtractor data; 278 if (value.GetData(data)) 279 return WriteRegisterBytes(reg_info, data, 0); 280 return false; 281 } 282 283 // Helper function for GDBRemoteRegisterContext::WriteRegisterBytes(). 284 bool GDBRemoteRegisterContext::SetPrimordialRegister( 285 const RegisterInfo *reg_info, GDBRemoteCommunicationClient &gdb_comm) { 286 StreamString packet; 287 StringExtractorGDBRemote response; 288 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 289 // Invalidate just this register 290 SetRegisterIsValid(reg, false); 291 292 return gdb_comm.WriteRegister( 293 m_thread.GetProtocolID(), reg_info->kinds[eRegisterKindProcessPlugin], 294 {m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size), 295 reg_info->byte_size}); 296 } 297 298 bool GDBRemoteRegisterContext::WriteRegisterBytes(const RegisterInfo *reg_info, 299 DataExtractor &data, 300 uint32_t data_offset) { 301 ExecutionContext exe_ctx(CalculateThread()); 302 303 Process *process = exe_ctx.GetProcessPtr(); 304 Thread *thread = exe_ctx.GetThreadPtr(); 305 if (process == NULL || thread == NULL) 306 return false; 307 308 GDBRemoteCommunicationClient &gdb_comm( 309 ((ProcessGDBRemote *)process)->GetGDBRemote()); 310 311 #if defined(LLDB_CONFIGURATION_DEBUG) 312 assert(m_reg_data.GetByteSize() >= 313 reg_info->byte_offset + reg_info->byte_size); 314 #endif 315 316 // If our register context and our register info disagree, which should never 317 // happen, don't overwrite past the end of the buffer. 318 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 319 return false; 320 321 // Grab a pointer to where we are going to put this register 322 uint8_t *dst = const_cast<uint8_t *>( 323 m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 324 325 if (dst == NULL) 326 return false; 327 328 if (data.CopyByteOrderedData(data_offset, // src offset 329 reg_info->byte_size, // src length 330 dst, // dst 331 reg_info->byte_size, // dst length 332 m_reg_data.GetByteOrder())) // dst byte order 333 { 334 GDBRemoteClientBase::Lock lock(gdb_comm, false); 335 if (lock) { 336 if (m_read_all_at_once) { 337 // Invalidate all register values 338 InvalidateIfNeeded(true); 339 340 // Set all registers in one packet 341 if (gdb_comm.WriteAllRegisters( 342 m_thread.GetProtocolID(), 343 {m_reg_data.GetDataStart(), size_t(m_reg_data.GetByteSize())})) 344 345 { 346 SetAllRegisterValid(false); 347 return true; 348 } 349 } else { 350 bool success = true; 351 352 if (reg_info->value_regs) { 353 // This register is part of another register. In this case we read 354 // the actual register data for any "value_regs", and once all that 355 // data is read, we will have enough data in our register context 356 // bytes for the value of this register 357 358 // Invalidate this composite register first. 359 360 for (uint32_t idx = 0; success; ++idx) { 361 const uint32_t reg = reg_info->value_regs[idx]; 362 if (reg == LLDB_INVALID_REGNUM) 363 break; 364 // We have a valid primordial register as our constituent. Grab the 365 // corresponding register info. 366 const RegisterInfo *value_reg_info = GetRegisterInfoAtIndex(reg); 367 if (value_reg_info == NULL) 368 success = false; 369 else 370 success = SetPrimordialRegister(value_reg_info, gdb_comm); 371 } 372 } else { 373 // This is an actual register, write it 374 success = SetPrimordialRegister(reg_info, gdb_comm); 375 } 376 377 // Check if writing this register will invalidate any other register 378 // values? If so, invalidate them 379 if (reg_info->invalidate_regs) { 380 for (uint32_t idx = 0, reg = reg_info->invalidate_regs[0]; 381 reg != LLDB_INVALID_REGNUM; 382 reg = reg_info->invalidate_regs[++idx]) { 383 SetRegisterIsValid(reg, false); 384 } 385 } 386 387 return success; 388 } 389 } else { 390 Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 391 GDBR_LOG_PACKETS)); 392 if (log) { 393 if (log->GetVerbose()) { 394 StreamString strm; 395 gdb_comm.DumpHistory(strm); 396 log->Printf("error: failed to get packet sequence mutex, not sending " 397 "write register for \"%s\":\n%s", 398 reg_info->name, strm.GetData()); 399 } else 400 log->Printf("error: failed to get packet sequence mutex, not sending " 401 "write register for \"%s\"", 402 reg_info->name); 403 } 404 } 405 } 406 return false; 407 } 408 409 bool GDBRemoteRegisterContext::ReadAllRegisterValues( 410 RegisterCheckpoint ®_checkpoint) { 411 ExecutionContext exe_ctx(CalculateThread()); 412 413 Process *process = exe_ctx.GetProcessPtr(); 414 Thread *thread = exe_ctx.GetThreadPtr(); 415 if (process == NULL || thread == NULL) 416 return false; 417 418 GDBRemoteCommunicationClient &gdb_comm( 419 ((ProcessGDBRemote *)process)->GetGDBRemote()); 420 421 uint32_t save_id = 0; 422 if (gdb_comm.SaveRegisterState(thread->GetProtocolID(), save_id)) { 423 reg_checkpoint.SetID(save_id); 424 reg_checkpoint.GetData().reset(); 425 return true; 426 } else { 427 reg_checkpoint.SetID(0); // Invalid save ID is zero 428 return ReadAllRegisterValues(reg_checkpoint.GetData()); 429 } 430 } 431 432 bool GDBRemoteRegisterContext::WriteAllRegisterValues( 433 const RegisterCheckpoint ®_checkpoint) { 434 uint32_t save_id = reg_checkpoint.GetID(); 435 if (save_id != 0) { 436 ExecutionContext exe_ctx(CalculateThread()); 437 438 Process *process = exe_ctx.GetProcessPtr(); 439 Thread *thread = exe_ctx.GetThreadPtr(); 440 if (process == NULL || thread == NULL) 441 return false; 442 443 GDBRemoteCommunicationClient &gdb_comm( 444 ((ProcessGDBRemote *)process)->GetGDBRemote()); 445 446 return gdb_comm.RestoreRegisterState(m_thread.GetProtocolID(), save_id); 447 } else { 448 return WriteAllRegisterValues(reg_checkpoint.GetData()); 449 } 450 } 451 452 bool GDBRemoteRegisterContext::ReadAllRegisterValues( 453 lldb::DataBufferSP &data_sp) { 454 ExecutionContext exe_ctx(CalculateThread()); 455 456 Process *process = exe_ctx.GetProcessPtr(); 457 Thread *thread = exe_ctx.GetThreadPtr(); 458 if (process == NULL || thread == NULL) 459 return false; 460 461 GDBRemoteCommunicationClient &gdb_comm( 462 ((ProcessGDBRemote *)process)->GetGDBRemote()); 463 464 const bool use_g_packet = 465 gdb_comm.AvoidGPackets((ProcessGDBRemote *)process) == false; 466 467 GDBRemoteClientBase::Lock lock(gdb_comm, false); 468 if (lock) { 469 if (gdb_comm.SyncThreadState(m_thread.GetProtocolID())) 470 InvalidateAllRegisters(); 471 472 if (use_g_packet && 473 (data_sp = gdb_comm.ReadAllRegisters(m_thread.GetProtocolID()))) 474 return true; 475 476 // We're going to read each register 477 // individually and store them as binary data in a buffer. 478 const RegisterInfo *reg_info; 479 480 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != NULL; i++) { 481 if (reg_info 482 ->value_regs) // skip registers that are slices of real registers 483 continue; 484 ReadRegisterBytes(reg_info, m_reg_data); 485 // ReadRegisterBytes saves the contents of the register in to the 486 // m_reg_data buffer 487 } 488 data_sp.reset(new DataBufferHeap(m_reg_data.GetDataStart(), 489 m_reg_info.GetRegisterDataByteSize())); 490 return true; 491 } else { 492 493 Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 494 GDBR_LOG_PACKETS)); 495 if (log) { 496 if (log->GetVerbose()) { 497 StreamString strm; 498 gdb_comm.DumpHistory(strm); 499 log->Printf("error: failed to get packet sequence mutex, not sending " 500 "read all registers:\n%s", 501 strm.GetData()); 502 } else 503 log->Printf("error: failed to get packet sequence mutex, not sending " 504 "read all registers"); 505 } 506 } 507 508 data_sp.reset(); 509 return false; 510 } 511 512 bool GDBRemoteRegisterContext::WriteAllRegisterValues( 513 const lldb::DataBufferSP &data_sp) { 514 if (!data_sp || data_sp->GetBytes() == NULL || data_sp->GetByteSize() == 0) 515 return false; 516 517 ExecutionContext exe_ctx(CalculateThread()); 518 519 Process *process = exe_ctx.GetProcessPtr(); 520 Thread *thread = exe_ctx.GetThreadPtr(); 521 if (process == NULL || thread == NULL) 522 return false; 523 524 GDBRemoteCommunicationClient &gdb_comm( 525 ((ProcessGDBRemote *)process)->GetGDBRemote()); 526 527 const bool use_g_packet = 528 gdb_comm.AvoidGPackets((ProcessGDBRemote *)process) == false; 529 530 GDBRemoteClientBase::Lock lock(gdb_comm, false); 531 if (lock) { 532 // The data_sp contains the G response packet. 533 if (use_g_packet) { 534 if (gdb_comm.WriteAllRegisters( 535 m_thread.GetProtocolID(), 536 {data_sp->GetBytes(), size_t(data_sp->GetByteSize())})) 537 return true; 538 539 uint32_t num_restored = 0; 540 // We need to manually go through all of the registers and restore them 541 // manually 542 DataExtractor restore_data(data_sp, m_reg_data.GetByteOrder(), 543 m_reg_data.GetAddressByteSize()); 544 545 const RegisterInfo *reg_info; 546 547 // The g packet contents may either include the slice registers 548 // (registers defined in terms of other registers, e.g. eax is a subset 549 // of rax) or not. The slice registers should NOT be in the g packet, 550 // but some implementations may incorrectly include them. 551 // 552 // If the slice registers are included in the packet, we must step over 553 // the slice registers when parsing the packet -- relying on the 554 // RegisterInfo byte_offset field would be incorrect. If the slice 555 // registers are not included, then using the byte_offset values into the 556 // data buffer is the best way to find individual register values. 557 558 uint64_t size_including_slice_registers = 0; 559 uint64_t size_not_including_slice_registers = 0; 560 uint64_t size_by_highest_offset = 0; 561 562 for (uint32_t reg_idx = 0; 563 (reg_info = GetRegisterInfoAtIndex(reg_idx)) != NULL; ++reg_idx) { 564 size_including_slice_registers += reg_info->byte_size; 565 if (reg_info->value_regs == NULL) 566 size_not_including_slice_registers += reg_info->byte_size; 567 if (reg_info->byte_offset >= size_by_highest_offset) 568 size_by_highest_offset = reg_info->byte_offset + reg_info->byte_size; 569 } 570 571 bool use_byte_offset_into_buffer; 572 if (size_by_highest_offset == restore_data.GetByteSize()) { 573 // The size of the packet agrees with the highest offset: + size in the 574 // register file 575 use_byte_offset_into_buffer = true; 576 } else if (size_not_including_slice_registers == 577 restore_data.GetByteSize()) { 578 // The size of the packet is the same as concatenating all of the 579 // registers sequentially, skipping the slice registers 580 use_byte_offset_into_buffer = true; 581 } else if (size_including_slice_registers == restore_data.GetByteSize()) { 582 // The slice registers are present in the packet (when they shouldn't 583 // be). Don't try to use the RegisterInfo byte_offset into the 584 // restore_data, it will point to the wrong place. 585 use_byte_offset_into_buffer = false; 586 } else { 587 // None of our expected sizes match the actual g packet data we're 588 // looking at. The most conservative approach here is to use the 589 // running total byte offset. 590 use_byte_offset_into_buffer = false; 591 } 592 593 // In case our register definitions don't include the correct offsets, 594 // keep track of the size of each reg & compute offset based on that. 595 uint32_t running_byte_offset = 0; 596 for (uint32_t reg_idx = 0; 597 (reg_info = GetRegisterInfoAtIndex(reg_idx)) != NULL; 598 ++reg_idx, running_byte_offset += reg_info->byte_size) { 599 // Skip composite aka slice registers (e.g. eax is a slice of rax). 600 if (reg_info->value_regs) 601 continue; 602 603 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 604 605 uint32_t register_offset; 606 if (use_byte_offset_into_buffer) { 607 register_offset = reg_info->byte_offset; 608 } else { 609 register_offset = running_byte_offset; 610 } 611 612 const uint32_t reg_byte_size = reg_info->byte_size; 613 614 const uint8_t *restore_src = 615 restore_data.PeekData(register_offset, reg_byte_size); 616 if (restore_src) { 617 SetRegisterIsValid(reg, false); 618 if (gdb_comm.WriteRegister( 619 m_thread.GetProtocolID(), 620 reg_info->kinds[eRegisterKindProcessPlugin], 621 {restore_src, reg_byte_size})) 622 ++num_restored; 623 } 624 } 625 return num_restored > 0; 626 } else { 627 // For the use_g_packet == false case, we're going to write each register 628 // individually. The data buffer is binary data in this case, instead of 629 // ascii characters. 630 631 bool arm64_debugserver = false; 632 if (m_thread.GetProcess().get()) { 633 const ArchSpec &arch = 634 m_thread.GetProcess()->GetTarget().GetArchitecture(); 635 if (arch.IsValid() && arch.GetMachine() == llvm::Triple::aarch64 && 636 arch.GetTriple().getVendor() == llvm::Triple::Apple && 637 arch.GetTriple().getOS() == llvm::Triple::IOS) { 638 arm64_debugserver = true; 639 } 640 } 641 uint32_t num_restored = 0; 642 const RegisterInfo *reg_info; 643 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != NULL; 644 i++) { 645 if (reg_info->value_regs) // skip registers that are slices of real 646 // registers 647 continue; 648 // Skip the fpsr and fpcr floating point status/control register 649 // writing to work around a bug in an older version of debugserver that 650 // would lead to register context corruption when writing fpsr/fpcr. 651 if (arm64_debugserver && (strcmp(reg_info->name, "fpsr") == 0 || 652 strcmp(reg_info->name, "fpcr") == 0)) { 653 continue; 654 } 655 656 SetRegisterIsValid(reg_info, false); 657 if (gdb_comm.WriteRegister(m_thread.GetProtocolID(), 658 reg_info->kinds[eRegisterKindProcessPlugin], 659 {data_sp->GetBytes() + reg_info->byte_offset, 660 reg_info->byte_size})) 661 ++num_restored; 662 } 663 return num_restored > 0; 664 } 665 } else { 666 Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 667 GDBR_LOG_PACKETS)); 668 if (log) { 669 if (log->GetVerbose()) { 670 StreamString strm; 671 gdb_comm.DumpHistory(strm); 672 log->Printf("error: failed to get packet sequence mutex, not sending " 673 "write all registers:\n%s", 674 strm.GetData()); 675 } else 676 log->Printf("error: failed to get packet sequence mutex, not sending " 677 "write all registers"); 678 } 679 } 680 return false; 681 } 682 683 uint32_t GDBRemoteRegisterContext::ConvertRegisterKindToRegisterNumber( 684 lldb::RegisterKind kind, uint32_t num) { 685 return m_reg_info.ConvertRegisterKindToRegisterNumber(kind, num); 686 } 687 688 void GDBRemoteDynamicRegisterInfo::HardcodeARMRegisters(bool from_scratch) { 689 // For Advanced SIMD and VFP register mapping. 690 static uint32_t g_d0_regs[] = {26, 27, LLDB_INVALID_REGNUM}; // (s0, s1) 691 static uint32_t g_d1_regs[] = {28, 29, LLDB_INVALID_REGNUM}; // (s2, s3) 692 static uint32_t g_d2_regs[] = {30, 31, LLDB_INVALID_REGNUM}; // (s4, s5) 693 static uint32_t g_d3_regs[] = {32, 33, LLDB_INVALID_REGNUM}; // (s6, s7) 694 static uint32_t g_d4_regs[] = {34, 35, LLDB_INVALID_REGNUM}; // (s8, s9) 695 static uint32_t g_d5_regs[] = {36, 37, LLDB_INVALID_REGNUM}; // (s10, s11) 696 static uint32_t g_d6_regs[] = {38, 39, LLDB_INVALID_REGNUM}; // (s12, s13) 697 static uint32_t g_d7_regs[] = {40, 41, LLDB_INVALID_REGNUM}; // (s14, s15) 698 static uint32_t g_d8_regs[] = {42, 43, LLDB_INVALID_REGNUM}; // (s16, s17) 699 static uint32_t g_d9_regs[] = {44, 45, LLDB_INVALID_REGNUM}; // (s18, s19) 700 static uint32_t g_d10_regs[] = {46, 47, LLDB_INVALID_REGNUM}; // (s20, s21) 701 static uint32_t g_d11_regs[] = {48, 49, LLDB_INVALID_REGNUM}; // (s22, s23) 702 static uint32_t g_d12_regs[] = {50, 51, LLDB_INVALID_REGNUM}; // (s24, s25) 703 static uint32_t g_d13_regs[] = {52, 53, LLDB_INVALID_REGNUM}; // (s26, s27) 704 static uint32_t g_d14_regs[] = {54, 55, LLDB_INVALID_REGNUM}; // (s28, s29) 705 static uint32_t g_d15_regs[] = {56, 57, LLDB_INVALID_REGNUM}; // (s30, s31) 706 static uint32_t g_q0_regs[] = { 707 26, 27, 28, 29, LLDB_INVALID_REGNUM}; // (d0, d1) -> (s0, s1, s2, s3) 708 static uint32_t g_q1_regs[] = { 709 30, 31, 32, 33, LLDB_INVALID_REGNUM}; // (d2, d3) -> (s4, s5, s6, s7) 710 static uint32_t g_q2_regs[] = { 711 34, 35, 36, 37, LLDB_INVALID_REGNUM}; // (d4, d5) -> (s8, s9, s10, s11) 712 static uint32_t g_q3_regs[] = { 713 38, 39, 40, 41, LLDB_INVALID_REGNUM}; // (d6, d7) -> (s12, s13, s14, s15) 714 static uint32_t g_q4_regs[] = { 715 42, 43, 44, 45, LLDB_INVALID_REGNUM}; // (d8, d9) -> (s16, s17, s18, s19) 716 static uint32_t g_q5_regs[] = { 717 46, 47, 48, 49, 718 LLDB_INVALID_REGNUM}; // (d10, d11) -> (s20, s21, s22, s23) 719 static uint32_t g_q6_regs[] = { 720 50, 51, 52, 53, 721 LLDB_INVALID_REGNUM}; // (d12, d13) -> (s24, s25, s26, s27) 722 static uint32_t g_q7_regs[] = { 723 54, 55, 56, 57, 724 LLDB_INVALID_REGNUM}; // (d14, d15) -> (s28, s29, s30, s31) 725 static uint32_t g_q8_regs[] = {59, 60, LLDB_INVALID_REGNUM}; // (d16, d17) 726 static uint32_t g_q9_regs[] = {61, 62, LLDB_INVALID_REGNUM}; // (d18, d19) 727 static uint32_t g_q10_regs[] = {63, 64, LLDB_INVALID_REGNUM}; // (d20, d21) 728 static uint32_t g_q11_regs[] = {65, 66, LLDB_INVALID_REGNUM}; // (d22, d23) 729 static uint32_t g_q12_regs[] = {67, 68, LLDB_INVALID_REGNUM}; // (d24, d25) 730 static uint32_t g_q13_regs[] = {69, 70, LLDB_INVALID_REGNUM}; // (d26, d27) 731 static uint32_t g_q14_regs[] = {71, 72, LLDB_INVALID_REGNUM}; // (d28, d29) 732 static uint32_t g_q15_regs[] = {73, 74, LLDB_INVALID_REGNUM}; // (d30, d31) 733 734 // This is our array of composite registers, with each element coming from 735 // the above register mappings. 736 static uint32_t *g_composites[] = { 737 g_d0_regs, g_d1_regs, g_d2_regs, g_d3_regs, g_d4_regs, g_d5_regs, 738 g_d6_regs, g_d7_regs, g_d8_regs, g_d9_regs, g_d10_regs, g_d11_regs, 739 g_d12_regs, g_d13_regs, g_d14_regs, g_d15_regs, g_q0_regs, g_q1_regs, 740 g_q2_regs, g_q3_regs, g_q4_regs, g_q5_regs, g_q6_regs, g_q7_regs, 741 g_q8_regs, g_q9_regs, g_q10_regs, g_q11_regs, g_q12_regs, g_q13_regs, 742 g_q14_regs, g_q15_regs}; 743 744 // clang-format off 745 static RegisterInfo g_register_infos[] = { 746 // NAME ALT SZ OFF ENCODING FORMAT EH_FRAME DWARF GENERIC PROCESS PLUGIN LLDB VALUE REGS INVALIDATE REGS SIZE EXPR SIZE LEN 747 // ====== ====== === === ============= ========== =================== =================== ====================== ============= ==== ========== =============== ========= ======== 748 { "r0", "arg1", 4, 0, eEncodingUint, eFormatHex, { ehframe_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1,0, 0 }, nullptr, nullptr, nullptr, 0 }, 749 { "r1", "arg2", 4, 0, eEncodingUint, eFormatHex, { ehframe_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2,1, 1 }, nullptr, nullptr, nullptr, 0 }, 750 { "r2", "arg3", 4, 0, eEncodingUint, eFormatHex, { ehframe_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3,2, 2 }, nullptr, nullptr, nullptr, 0 }, 751 { "r3", "arg4", 4, 0, eEncodingUint, eFormatHex, { ehframe_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4,3, 3 }, nullptr, nullptr, nullptr, 0 }, 752 { "r4", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r4, dwarf_r4, LLDB_INVALID_REGNUM, 4, 4 }, nullptr, nullptr, nullptr, 0 }, 753 { "r5", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r5, dwarf_r5, LLDB_INVALID_REGNUM, 5, 5 }, nullptr, nullptr, nullptr, 0 }, 754 { "r6", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r6, dwarf_r6, LLDB_INVALID_REGNUM, 6, 6 }, nullptr, nullptr, nullptr, 0 }, 755 { "r7", "fp", 4, 0, eEncodingUint, eFormatHex, { ehframe_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, 7, 7 }, nullptr, nullptr, nullptr, 0 }, 756 { "r8", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r8, dwarf_r8, LLDB_INVALID_REGNUM, 8, 8 }, nullptr, nullptr, nullptr, 0 }, 757 { "r9", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r9, dwarf_r9, LLDB_INVALID_REGNUM, 9, 9 }, nullptr, nullptr, nullptr, 0 }, 758 { "r10", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r10, dwarf_r10, LLDB_INVALID_REGNUM, 10, 10 }, nullptr, nullptr, nullptr, 0 }, 759 { "r11", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r11, dwarf_r11, LLDB_INVALID_REGNUM, 11, 11 }, nullptr, nullptr, nullptr, 0 }, 760 { "r12", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r12, dwarf_r12, LLDB_INVALID_REGNUM, 12, 12 }, nullptr, nullptr, nullptr, 0 }, 761 { "sp", "r13", 4, 0, eEncodingUint, eFormatHex, { ehframe_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, 13, 13 }, nullptr, nullptr, nullptr, 0 }, 762 { "lr", "r14", 4, 0, eEncodingUint, eFormatHex, { ehframe_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, 14, 14 }, nullptr, nullptr, nullptr, 0 }, 763 { "pc", "r15", 4, 0, eEncodingUint, eFormatHex, { ehframe_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, 15, 15 }, nullptr, nullptr, nullptr, 0 }, 764 { "f0", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 16, 16 }, nullptr, nullptr, nullptr, 0 }, 765 { "f1", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 17, 17 }, nullptr, nullptr, nullptr, 0 }, 766 { "f2", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 18, 18 }, nullptr, nullptr, nullptr, 0 }, 767 { "f3", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 19, 19 }, nullptr, nullptr, nullptr, 0 }, 768 { "f4", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 20, 20 }, nullptr, nullptr, nullptr, 0 }, 769 { "f5", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 21, 21 }, nullptr, nullptr, nullptr, 0 }, 770 { "f6", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 22, 22 }, nullptr, nullptr, nullptr, 0 }, 771 { "f7", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 23, 23 }, nullptr, nullptr, nullptr, 0 }, 772 { "fps", nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 24, 24 }, nullptr, nullptr, nullptr, 0 }, 773 { "cpsr","flags", 4, 0, eEncodingUint, eFormatHex, { ehframe_cpsr, dwarf_cpsr, LLDB_INVALID_REGNUM, 25, 25 }, nullptr, nullptr, nullptr, 0 }, 774 { "s0", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, 26, 26 }, nullptr, nullptr, nullptr, 0 }, 775 { "s1", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, 27, 27 }, nullptr, nullptr, nullptr, 0 }, 776 { "s2", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, 28, 28 }, nullptr, nullptr, nullptr, 0 }, 777 { "s3", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, 29, 29 }, nullptr, nullptr, nullptr, 0 }, 778 { "s4", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, 30, 30 }, nullptr, nullptr, nullptr, 0 }, 779 { "s5", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, 31, 31 }, nullptr, nullptr, nullptr, 0 }, 780 { "s6", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, 32, 32 }, nullptr, nullptr, nullptr, 0 }, 781 { "s7", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, 33, 33 }, nullptr, nullptr, nullptr, 0 }, 782 { "s8", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, 34, 34 }, nullptr, nullptr, nullptr, 0 }, 783 { "s9", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, 35, 35 }, nullptr, nullptr, nullptr, 0 }, 784 { "s10", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, 36, 36 }, nullptr, nullptr, nullptr, 0 }, 785 { "s11", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, 37, 37 }, nullptr, nullptr, nullptr, 0 }, 786 { "s12", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, 38, 38 }, nullptr, nullptr, nullptr, 0 }, 787 { "s13", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, 39, 39 }, nullptr, nullptr, nullptr, 0 }, 788 { "s14", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, 40, 40 }, nullptr, nullptr, nullptr, 0 }, 789 { "s15", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, 41, 41 }, nullptr, nullptr, nullptr, 0 }, 790 { "s16", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, 42, 42 }, nullptr, nullptr, nullptr, 0 }, 791 { "s17", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, 43, 43 }, nullptr, nullptr, nullptr, 0 }, 792 { "s18", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, 44, 44 }, nullptr, nullptr, nullptr, 0 }, 793 { "s19", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, 45, 45 }, nullptr, nullptr, nullptr, 0 }, 794 { "s20", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, 46, 46 }, nullptr, nullptr, nullptr, 0 }, 795 { "s21", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, 47, 47 }, nullptr, nullptr, nullptr, 0 }, 796 { "s22", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, 48, 48 }, nullptr, nullptr, nullptr, 0 }, 797 { "s23", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, 49, 49 }, nullptr, nullptr, nullptr, 0 }, 798 { "s24", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, 50, 50 }, nullptr, nullptr, nullptr, 0 }, 799 { "s25", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, 51, 51 }, nullptr, nullptr, nullptr, 0 }, 800 { "s26", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, 52, 52 }, nullptr, nullptr, nullptr, 0 }, 801 { "s27", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, 53, 53 }, nullptr, nullptr, nullptr, 0 }, 802 { "s28", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, 54, 54 }, nullptr, nullptr, nullptr, 0 }, 803 { "s29", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, 55, 55 }, nullptr, nullptr, nullptr, 0 }, 804 { "s30", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, 56, 56 }, nullptr, nullptr, nullptr, 0 }, 805 { "s31", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, 57, 57 }, nullptr, nullptr, nullptr, 0 }, 806 { "fpscr",nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 58, 58 }, nullptr, nullptr, nullptr, 0 }, 807 { "d16", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, 59, 59 }, nullptr, nullptr, nullptr, 0 }, 808 { "d17", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, 60, 60 }, nullptr, nullptr, nullptr, 0 }, 809 { "d18", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, 61, 61 }, nullptr, nullptr, nullptr, 0 }, 810 { "d19", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, 62, 62 }, nullptr, nullptr, nullptr, 0 }, 811 { "d20", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, 63, 63 }, nullptr, nullptr, nullptr, 0 }, 812 { "d21", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, 64, 64 }, nullptr, nullptr, nullptr, 0 }, 813 { "d22", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, 65, 65 }, nullptr, nullptr, nullptr, 0 }, 814 { "d23", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, 66, 66 }, nullptr, nullptr, nullptr, 0 }, 815 { "d24", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, 67, 67 }, nullptr, nullptr, nullptr, 0 }, 816 { "d25", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, 68, 68 }, nullptr, nullptr, nullptr, 0 }, 817 { "d26", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, 69, 69 }, nullptr, nullptr, nullptr, 0 }, 818 { "d27", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, 70, 70 }, nullptr, nullptr, nullptr, 0 }, 819 { "d28", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, 71, 71 }, nullptr, nullptr, nullptr, 0 }, 820 { "d29", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, 72, 72 }, nullptr, nullptr, nullptr, 0 }, 821 { "d30", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, 73, 73 }, nullptr, nullptr, nullptr, 0 }, 822 { "d31", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, 74, 74 }, nullptr, nullptr, nullptr, 0 }, 823 { "d0", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, 75, 75 }, g_d0_regs, nullptr, nullptr, 0 }, 824 { "d1", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, 76, 76 }, g_d1_regs, nullptr, nullptr, 0 }, 825 { "d2", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, 77, 77 }, g_d2_regs, nullptr, nullptr, 0 }, 826 { "d3", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, 78, 78 }, g_d3_regs, nullptr, nullptr, 0 }, 827 { "d4", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, 79, 79 }, g_d4_regs, nullptr, nullptr, 0 }, 828 { "d5", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, 80, 80 }, g_d5_regs, nullptr, nullptr, 0 }, 829 { "d6", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, 81, 81 }, g_d6_regs, nullptr, nullptr, 0 }, 830 { "d7", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, 82, 82 }, g_d7_regs, nullptr, nullptr, 0 }, 831 { "d8", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, 83, 83 }, g_d8_regs, nullptr, nullptr, 0 }, 832 { "d9", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, 84, 84 }, g_d9_regs, nullptr, nullptr, 0 }, 833 { "d10", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, 85, 85 }, g_d10_regs, nullptr, nullptr, 0 }, 834 { "d11", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, 86, 86 }, g_d11_regs, nullptr, nullptr, 0 }, 835 { "d12", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, 87, 87 }, g_d12_regs, nullptr, nullptr, 0 }, 836 { "d13", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, 88, 88 }, g_d13_regs, nullptr, nullptr, 0 }, 837 { "d14", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, 89, 89 }, g_d14_regs, nullptr, nullptr, 0 }, 838 { "d15", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, 90, 90 }, g_d15_regs, nullptr, nullptr, 0 }, 839 { "q0", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q0, LLDB_INVALID_REGNUM, 91, 91 }, g_q0_regs, nullptr, nullptr, 0 }, 840 { "q1", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q1, LLDB_INVALID_REGNUM, 92, 92 }, g_q1_regs, nullptr, nullptr, 0 }, 841 { "q2", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q2, LLDB_INVALID_REGNUM, 93, 93 }, g_q2_regs, nullptr, nullptr, 0 }, 842 { "q3", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q3, LLDB_INVALID_REGNUM, 94, 94 }, g_q3_regs, nullptr, nullptr, 0 }, 843 { "q4", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q4, LLDB_INVALID_REGNUM, 95, 95 }, g_q4_regs, nullptr, nullptr, 0 }, 844 { "q5", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q5, LLDB_INVALID_REGNUM, 96, 96 }, g_q5_regs, nullptr, nullptr, 0 }, 845 { "q6", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q6, LLDB_INVALID_REGNUM, 97, 97 }, g_q6_regs, nullptr, nullptr, 0 }, 846 { "q7", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q7, LLDB_INVALID_REGNUM, 98, 98 }, g_q7_regs, nullptr, nullptr, 0 }, 847 { "q8", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q8, LLDB_INVALID_REGNUM, 99, 99 }, g_q8_regs, nullptr, nullptr, 0 }, 848 { "q9", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q9, LLDB_INVALID_REGNUM, 100, 100 }, g_q9_regs, nullptr, nullptr, 0 }, 849 { "q10", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q10, LLDB_INVALID_REGNUM, 101, 101 }, g_q10_regs, nullptr, nullptr, 0 }, 850 { "q11", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q11, LLDB_INVALID_REGNUM, 102, 102 }, g_q11_regs, nullptr, nullptr, 0 }, 851 { "q12", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q12, LLDB_INVALID_REGNUM, 103, 103 }, g_q12_regs, nullptr, nullptr, 0 }, 852 { "q13", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q13, LLDB_INVALID_REGNUM, 104, 104 }, g_q13_regs, nullptr, nullptr, 0 }, 853 { "q14", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q14, LLDB_INVALID_REGNUM, 105, 105 }, g_q14_regs, nullptr, nullptr, 0 }, 854 { "q15", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q15, LLDB_INVALID_REGNUM, 106, 106 }, g_q15_regs, nullptr, nullptr, 0 } 855 }; 856 // clang-format on 857 858 static const uint32_t num_registers = llvm::array_lengthof(g_register_infos); 859 static ConstString gpr_reg_set("General Purpose Registers"); 860 static ConstString sfp_reg_set("Software Floating Point Registers"); 861 static ConstString vfp_reg_set("Floating Point Registers"); 862 size_t i; 863 if (from_scratch) { 864 // Calculate the offsets of the registers 865 // Note that the layout of the "composite" registers (d0-d15 and q0-q15) 866 // which comes after the "primordial" registers is important. This enables 867 // us to calculate the offset of the composite register by using the offset 868 // of its first primordial register. For example, to calculate the offset 869 // of q0, use s0's offset. 870 if (g_register_infos[2].byte_offset == 0) { 871 uint32_t byte_offset = 0; 872 for (i = 0; i < num_registers; ++i) { 873 // For primordial registers, increment the byte_offset by the byte_size 874 // to arrive at the byte_offset for the next register. Otherwise, we 875 // have a composite register whose offset can be calculated by 876 // consulting the offset of its first primordial register. 877 if (!g_register_infos[i].value_regs) { 878 g_register_infos[i].byte_offset = byte_offset; 879 byte_offset += g_register_infos[i].byte_size; 880 } else { 881 const uint32_t first_primordial_reg = 882 g_register_infos[i].value_regs[0]; 883 g_register_infos[i].byte_offset = 884 g_register_infos[first_primordial_reg].byte_offset; 885 } 886 } 887 } 888 for (i = 0; i < num_registers; ++i) { 889 ConstString name; 890 ConstString alt_name; 891 if (g_register_infos[i].name && g_register_infos[i].name[0]) 892 name.SetCString(g_register_infos[i].name); 893 if (g_register_infos[i].alt_name && g_register_infos[i].alt_name[0]) 894 alt_name.SetCString(g_register_infos[i].alt_name); 895 896 if (i <= 15 || i == 25) 897 AddRegister(g_register_infos[i], name, alt_name, gpr_reg_set); 898 else if (i <= 24) 899 AddRegister(g_register_infos[i], name, alt_name, sfp_reg_set); 900 else 901 AddRegister(g_register_infos[i], name, alt_name, vfp_reg_set); 902 } 903 } else { 904 // Add composite registers to our primordial registers, then. 905 const size_t num_composites = llvm::array_lengthof(g_composites); 906 const size_t num_dynamic_regs = GetNumRegisters(); 907 const size_t num_common_regs = num_registers - num_composites; 908 RegisterInfo *g_comp_register_infos = g_register_infos + num_common_regs; 909 910 // First we need to validate that all registers that we already have match 911 // the non composite regs. If so, then we can add the registers, else we 912 // need to bail 913 bool match = true; 914 if (num_dynamic_regs == num_common_regs) { 915 for (i = 0; match && i < num_dynamic_regs; ++i) { 916 // Make sure all register names match 917 if (m_regs[i].name && g_register_infos[i].name) { 918 if (strcmp(m_regs[i].name, g_register_infos[i].name)) { 919 match = false; 920 break; 921 } 922 } 923 924 // Make sure all register byte sizes match 925 if (m_regs[i].byte_size != g_register_infos[i].byte_size) { 926 match = false; 927 break; 928 } 929 } 930 } else { 931 // Wrong number of registers. 932 match = false; 933 } 934 // If "match" is true, then we can add extra registers. 935 if (match) { 936 for (i = 0; i < num_composites; ++i) { 937 ConstString name; 938 ConstString alt_name; 939 const uint32_t first_primordial_reg = 940 g_comp_register_infos[i].value_regs[0]; 941 const char *reg_name = g_register_infos[first_primordial_reg].name; 942 if (reg_name && reg_name[0]) { 943 for (uint32_t j = 0; j < num_dynamic_regs; ++j) { 944 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(j); 945 // Find a matching primordial register info entry. 946 if (reg_info && reg_info->name && 947 ::strcasecmp(reg_info->name, reg_name) == 0) { 948 // The name matches the existing primordial entry. Find and 949 // assign the offset, and then add this composite register entry. 950 g_comp_register_infos[i].byte_offset = reg_info->byte_offset; 951 name.SetCString(g_comp_register_infos[i].name); 952 AddRegister(g_comp_register_infos[i], name, alt_name, 953 vfp_reg_set); 954 } 955 } 956 } 957 } 958 } 959 } 960 } 961