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/Core/DataBufferHeap.h" 16 #include "lldb/Core/DataExtractor.h" 17 #include "lldb/Core/RegisterValue.h" 18 #include "lldb/Core/Scalar.h" 19 #include "lldb/Core/StreamString.h" 20 #include "lldb/Target/ExecutionContext.h" 21 #include "lldb/Target/Target.h" 22 #include "lldb/Utility/Utils.h" 23 // Project includes 24 #include "Utility/StringExtractorGDBRemote.h" 25 #include "ProcessGDBRemote.h" 26 #include "ProcessGDBRemoteLog.h" 27 #include "ThreadGDBRemote.h" 28 #include "Utility/ARM_DWARF_Registers.h" 29 #include "Utility/ARM_ehframe_Registers.h" 30 31 using namespace lldb; 32 using namespace lldb_private; 33 using namespace lldb_private::process_gdb_remote; 34 35 //---------------------------------------------------------------------- 36 // GDBRemoteRegisterContext constructor 37 //---------------------------------------------------------------------- 38 GDBRemoteRegisterContext::GDBRemoteRegisterContext 39 ( 40 ThreadGDBRemote &thread, 41 uint32_t concrete_frame_idx, 42 GDBRemoteDynamicRegisterInfo ®_info, 43 bool read_all_at_once 44 ) : 45 RegisterContext (thread, concrete_frame_idx), 46 m_reg_info (reg_info), 47 m_reg_valid (), 48 m_reg_data (), 49 m_read_all_at_once (read_all_at_once) 50 { 51 // Resize our vector of bools to contain one bool for every register. 52 // We will use these boolean values to know when a register value 53 // is valid in m_reg_data. 54 m_reg_valid.resize (reg_info.GetNumRegisters()); 55 56 // Make a heap based buffer that is big enough to store all registers 57 DataBufferSP reg_data_sp(new DataBufferHeap (reg_info.GetRegisterDataByteSize(), 0)); 58 m_reg_data.SetData (reg_data_sp); 59 m_reg_data.SetByteOrder(thread.GetProcess()->GetByteOrder()); 60 } 61 62 //---------------------------------------------------------------------- 63 // Destructor 64 //---------------------------------------------------------------------- 65 GDBRemoteRegisterContext::~GDBRemoteRegisterContext() 66 { 67 } 68 69 void 70 GDBRemoteRegisterContext::InvalidateAllRegisters () 71 { 72 SetAllRegisterValid (false); 73 } 74 75 void 76 GDBRemoteRegisterContext::SetAllRegisterValid (bool b) 77 { 78 std::vector<bool>::iterator pos, end = m_reg_valid.end(); 79 for (pos = m_reg_valid.begin(); pos != end; ++pos) 80 *pos = b; 81 } 82 83 size_t 84 GDBRemoteRegisterContext::GetRegisterCount () 85 { 86 return m_reg_info.GetNumRegisters (); 87 } 88 89 const RegisterInfo * 90 GDBRemoteRegisterContext::GetRegisterInfoAtIndex (size_t reg) 91 { 92 RegisterInfo* reg_info = m_reg_info.GetRegisterInfoAtIndex (reg); 93 94 if (reg_info && reg_info->dynamic_size_dwarf_expr_bytes) 95 { 96 const ArchSpec &arch = m_thread.GetProcess ()->GetTarget ().GetArchitecture (); 97 uint8_t reg_size = UpdateDynamicRegisterSize (arch, reg_info); 98 reg_info->byte_size = reg_size; 99 } 100 return reg_info; 101 } 102 103 size_t 104 GDBRemoteRegisterContext::GetRegisterSetCount () 105 { 106 return m_reg_info.GetNumRegisterSets (); 107 } 108 109 110 111 const RegisterSet * 112 GDBRemoteRegisterContext::GetRegisterSet (size_t reg_set) 113 { 114 return m_reg_info.GetRegisterSet (reg_set); 115 } 116 117 118 119 bool 120 GDBRemoteRegisterContext::ReadRegister (const RegisterInfo *reg_info, RegisterValue &value) 121 { 122 // Read the register 123 if (ReadRegisterBytes (reg_info, m_reg_data)) 124 { 125 const bool partial_data_ok = false; 126 Error error (value.SetValueFromData(reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok)); 127 return error.Success(); 128 } 129 return false; 130 } 131 132 bool 133 GDBRemoteRegisterContext::PrivateSetRegisterValue (uint32_t reg, StringExtractor &response) 134 { 135 const RegisterInfo *reg_info = GetRegisterInfoAtIndex (reg); 136 if (reg_info == NULL) 137 return false; 138 139 // Invalidate if needed 140 InvalidateIfNeeded(false); 141 142 const uint32_t reg_byte_size = reg_info->byte_size; 143 const size_t bytes_copied = response.GetHexBytes (const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_byte_size)), reg_byte_size, '\xcc'); 144 bool success = bytes_copied == reg_byte_size; 145 if (success) 146 { 147 SetRegisterIsValid(reg, true); 148 } 149 else if (bytes_copied > 0) 150 { 151 // Only set register is valid to false if we copied some bytes, else 152 // leave it as it was. 153 SetRegisterIsValid(reg, false); 154 } 155 return success; 156 } 157 158 bool 159 GDBRemoteRegisterContext::PrivateSetRegisterValue (uint32_t reg, uint64_t new_reg_val) 160 { 161 const RegisterInfo *reg_info = GetRegisterInfoAtIndex (reg); 162 if (reg_info == NULL) 163 return false; 164 165 // Early in process startup, we can get a thread that has an invalid byte order 166 // because the process hasn't been completely set up yet (see the ctor where the 167 // byte order is setfrom the process). If that's the case, we can't set the 168 // value here. 169 if (m_reg_data.GetByteOrder() == eByteOrderInvalid) 170 { 171 return false; 172 } 173 174 // Invalidate if needed 175 InvalidateIfNeeded (false); 176 177 DataBufferSP buffer_sp (new DataBufferHeap (&new_reg_val, sizeof (new_reg_val))); 178 DataExtractor data (buffer_sp, endian::InlHostByteOrder(), sizeof (void*)); 179 180 // If our register context and our register info disagree, which should never happen, don't 181 // overwrite past the end of the buffer. 182 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 183 return false; 184 185 // Grab a pointer to where we are going to put this register 186 uint8_t *dst = const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 187 188 if (dst == NULL) 189 return false; 190 191 192 if (data.CopyByteOrderedData (0, // src offset 193 reg_info->byte_size, // src length 194 dst, // dst 195 reg_info->byte_size, // dst length 196 m_reg_data.GetByteOrder())) // dst byte order 197 { 198 SetRegisterIsValid (reg, true); 199 return true; 200 } 201 return false; 202 } 203 204 // Helper function for GDBRemoteRegisterContext::ReadRegisterBytes(). 205 bool 206 GDBRemoteRegisterContext::GetPrimordialRegister(const RegisterInfo *reg_info, 207 GDBRemoteCommunicationClient &gdb_comm) 208 { 209 const uint32_t lldb_reg = reg_info->kinds[eRegisterKindLLDB]; 210 const uint32_t remote_reg = reg_info->kinds[eRegisterKindProcessPlugin]; 211 StringExtractorGDBRemote response; 212 if (gdb_comm.ReadRegister(m_thread.GetProtocolID(), remote_reg, response)) 213 return PrivateSetRegisterValue (lldb_reg, response); 214 return false; 215 } 216 217 bool 218 GDBRemoteRegisterContext::ReadRegisterBytes (const RegisterInfo *reg_info, DataExtractor &data) 219 { 220 ExecutionContext exe_ctx (CalculateThread()); 221 222 Process *process = exe_ctx.GetProcessPtr(); 223 Thread *thread = exe_ctx.GetThreadPtr(); 224 if (process == NULL || thread == NULL) 225 return false; 226 227 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 228 229 InvalidateIfNeeded(false); 230 231 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 232 233 if (!GetRegisterIsValid(reg)) 234 { 235 if (m_read_all_at_once) 236 { 237 StringExtractorGDBRemote response; 238 if (!gdb_comm.ReadAllRegisters(m_thread.GetProtocolID(), response)) 239 return false; 240 if (response.IsNormalResponse()) 241 if (response.GetHexBytes(const_cast<void *>(reinterpret_cast<const void *>(m_reg_data.GetDataStart())), 242 m_reg_data.GetByteSize(), '\xcc') == m_reg_data.GetByteSize()) 243 SetAllRegisterValid (true); 244 } 245 else if (reg_info->value_regs) 246 { 247 // Process this composite register request by delegating to the constituent 248 // primordial registers. 249 250 // Index of the primordial register. 251 bool success = true; 252 for (uint32_t idx = 0; success; ++idx) 253 { 254 const uint32_t prim_reg = reg_info->value_regs[idx]; 255 if (prim_reg == LLDB_INVALID_REGNUM) 256 break; 257 // We have a valid primordial register as our constituent. 258 // Grab the corresponding register info. 259 const RegisterInfo *prim_reg_info = GetRegisterInfoAtIndex(prim_reg); 260 if (prim_reg_info == NULL) 261 success = false; 262 else 263 { 264 // Read the containing register if it hasn't already been read 265 if (!GetRegisterIsValid(prim_reg)) 266 success = GetPrimordialRegister(prim_reg_info, gdb_comm); 267 } 268 } 269 270 if (success) 271 { 272 // If we reach this point, all primordial register requests have succeeded. 273 // Validate this composite register. 274 SetRegisterIsValid (reg_info, true); 275 } 276 } 277 else 278 { 279 // Get each register individually 280 GetPrimordialRegister(reg_info, gdb_comm); 281 } 282 283 // Make sure we got a valid register value after reading it 284 if (!GetRegisterIsValid(reg)) 285 return false; 286 } 287 288 if (&data != &m_reg_data) 289 { 290 #if defined (LLDB_CONFIGURATION_DEBUG) 291 assert (m_reg_data.GetByteSize() >= reg_info->byte_offset + reg_info->byte_size); 292 #endif 293 // If our register context and our register info disagree, which should never happen, don't 294 // read past the end of the buffer. 295 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 296 return false; 297 298 // If we aren't extracting into our own buffer (which 299 // only happens when this function is called from 300 // ReadRegisterValue(uint32_t, Scalar&)) then 301 // we transfer bytes from our buffer into the data 302 // buffer that was passed in 303 304 data.SetByteOrder (m_reg_data.GetByteOrder()); 305 data.SetData (m_reg_data, reg_info->byte_offset, reg_info->byte_size); 306 } 307 return true; 308 } 309 310 bool 311 GDBRemoteRegisterContext::WriteRegister (const RegisterInfo *reg_info, 312 const RegisterValue &value) 313 { 314 DataExtractor data; 315 if (value.GetData (data)) 316 return WriteRegisterBytes (reg_info, data, 0); 317 return false; 318 } 319 320 // Helper function for GDBRemoteRegisterContext::WriteRegisterBytes(). 321 bool 322 GDBRemoteRegisterContext::SetPrimordialRegister(const RegisterInfo *reg_info, 323 GDBRemoteCommunicationClient &gdb_comm) 324 { 325 StreamString packet; 326 StringExtractorGDBRemote response; 327 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 328 // Invalidate just this register 329 SetRegisterIsValid(reg, false); 330 331 return gdb_comm.WriteRegister( 332 m_thread.GetProtocolID(), reg_info->kinds[eRegisterKindProcessPlugin], 333 llvm::StringRef(reinterpret_cast<const char *>(m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)), 334 reg_info->byte_size)); 335 } 336 337 void 338 GDBRemoteRegisterContext::SyncThreadState(Process *process) 339 { 340 // NB. We assume our caller has locked the sequence mutex. 341 342 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *) process)->GetGDBRemote()); 343 if (!gdb_comm.GetSyncThreadStateSupported()) 344 return; 345 346 StreamString packet; 347 StringExtractorGDBRemote response; 348 packet.Printf ("QSyncThreadState:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 349 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 350 packet.GetString().size(), 351 response, 352 false) == GDBRemoteCommunication::PacketResult::Success) 353 { 354 if (response.IsOKResponse()) 355 InvalidateAllRegisters(); 356 } 357 } 358 359 bool 360 GDBRemoteRegisterContext::WriteRegisterBytes (const RegisterInfo *reg_info, DataExtractor &data, uint32_t data_offset) 361 { 362 ExecutionContext exe_ctx (CalculateThread()); 363 364 Process *process = exe_ctx.GetProcessPtr(); 365 Thread *thread = exe_ctx.GetThreadPtr(); 366 if (process == NULL || thread == NULL) 367 return false; 368 369 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 370 371 #if defined (LLDB_CONFIGURATION_DEBUG) 372 assert (m_reg_data.GetByteSize() >= reg_info->byte_offset + reg_info->byte_size); 373 #endif 374 375 // If our register context and our register info disagree, which should never happen, don't 376 // overwrite past the end of the buffer. 377 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 378 return false; 379 380 // Grab a pointer to where we are going to put this register 381 uint8_t *dst = const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 382 383 if (dst == NULL) 384 return false; 385 386 387 if (data.CopyByteOrderedData (data_offset, // src offset 388 reg_info->byte_size, // src length 389 dst, // dst 390 reg_info->byte_size, // dst length 391 m_reg_data.GetByteOrder())) // dst byte order 392 { 393 GDBRemoteClientBase::Lock lock(gdb_comm, false); 394 if (lock) 395 { 396 const bool thread_suffix_supported = gdb_comm.GetThreadSuffixSupported(); 397 ProcessSP process_sp (m_thread.GetProcess()); 398 if (thread_suffix_supported || static_cast<ProcessGDBRemote *>(process_sp.get())->GetGDBRemote().SetCurrentThread(m_thread.GetProtocolID())) 399 { 400 StreamString packet; 401 StringExtractorGDBRemote response; 402 403 if (m_read_all_at_once) 404 { 405 // Set all registers in one packet 406 packet.PutChar ('G'); 407 packet.PutBytesAsRawHex8 (m_reg_data.GetDataStart(), 408 m_reg_data.GetByteSize(), 409 endian::InlHostByteOrder(), 410 endian::InlHostByteOrder()); 411 412 if (thread_suffix_supported) 413 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 414 415 // Invalidate all register values 416 InvalidateIfNeeded (true); 417 418 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 419 packet.GetString().size(), 420 response, 421 false) == GDBRemoteCommunication::PacketResult::Success) 422 { 423 SetAllRegisterValid (false); 424 if (response.IsOKResponse()) 425 { 426 return true; 427 } 428 } 429 } 430 else 431 { 432 bool success = true; 433 434 if (reg_info->value_regs) 435 { 436 // This register is part of another register. In this case we read the actual 437 // register data for any "value_regs", and once all that data is read, we will 438 // have enough data in our register context bytes for the value of this register 439 440 // Invalidate this composite register first. 441 442 for (uint32_t idx = 0; success; ++idx) 443 { 444 const uint32_t reg = reg_info->value_regs[idx]; 445 if (reg == LLDB_INVALID_REGNUM) 446 break; 447 // We have a valid primordial register as our constituent. 448 // Grab the corresponding register info. 449 const RegisterInfo *value_reg_info = GetRegisterInfoAtIndex(reg); 450 if (value_reg_info == NULL) 451 success = false; 452 else 453 success = SetPrimordialRegister(value_reg_info, gdb_comm); 454 } 455 } 456 else 457 { 458 // This is an actual register, write it 459 success = SetPrimordialRegister(reg_info, gdb_comm); 460 } 461 462 // Check if writing this register will invalidate any other register values? 463 // If so, invalidate them 464 if (reg_info->invalidate_regs) 465 { 466 for (uint32_t idx = 0, reg = reg_info->invalidate_regs[0]; 467 reg != LLDB_INVALID_REGNUM; 468 reg = reg_info->invalidate_regs[++idx]) 469 { 470 SetRegisterIsValid(reg, false); 471 } 472 } 473 474 return success; 475 } 476 } 477 } 478 else 479 { 480 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS)); 481 if (log) 482 { 483 if (log->GetVerbose()) 484 { 485 StreamString strm; 486 gdb_comm.DumpHistory(strm); 487 log->Printf("error: failed to get packet sequence mutex, not sending write register for \"%s\":\n%s", reg_info->name, strm.GetData()); 488 } 489 else 490 log->Printf("error: failed to get packet sequence mutex, not sending write register for \"%s\"", reg_info->name); 491 } 492 } 493 } 494 return false; 495 } 496 497 bool 498 GDBRemoteRegisterContext::ReadAllRegisterValues (RegisterCheckpoint ®_checkpoint) 499 { 500 ExecutionContext exe_ctx (CalculateThread()); 501 502 Process *process = exe_ctx.GetProcessPtr(); 503 Thread *thread = exe_ctx.GetThreadPtr(); 504 if (process == NULL || thread == NULL) 505 return false; 506 507 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 508 509 uint32_t save_id = 0; 510 if (gdb_comm.SaveRegisterState(thread->GetProtocolID(), save_id)) 511 { 512 reg_checkpoint.SetID(save_id); 513 reg_checkpoint.GetData().reset(); 514 return true; 515 } 516 else 517 { 518 reg_checkpoint.SetID(0); // Invalid save ID is zero 519 return ReadAllRegisterValues(reg_checkpoint.GetData()); 520 } 521 } 522 523 bool 524 GDBRemoteRegisterContext::WriteAllRegisterValues (const RegisterCheckpoint ®_checkpoint) 525 { 526 uint32_t save_id = reg_checkpoint.GetID(); 527 if (save_id != 0) 528 { 529 ExecutionContext exe_ctx (CalculateThread()); 530 531 Process *process = exe_ctx.GetProcessPtr(); 532 Thread *thread = exe_ctx.GetThreadPtr(); 533 if (process == NULL || thread == NULL) 534 return false; 535 536 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 537 538 return gdb_comm.RestoreRegisterState(m_thread.GetProtocolID(), save_id); 539 } 540 else 541 { 542 return WriteAllRegisterValues(reg_checkpoint.GetData()); 543 } 544 } 545 546 bool 547 GDBRemoteRegisterContext::ReadAllRegisterValues (lldb::DataBufferSP &data_sp) 548 { 549 ExecutionContext exe_ctx (CalculateThread()); 550 551 Process *process = exe_ctx.GetProcessPtr(); 552 Thread *thread = exe_ctx.GetThreadPtr(); 553 if (process == NULL || thread == NULL) 554 return false; 555 556 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 557 558 StringExtractorGDBRemote response; 559 560 const bool use_g_packet = gdb_comm.AvoidGPackets ((ProcessGDBRemote *)process) == false; 561 562 GDBRemoteClientBase::Lock lock(gdb_comm, false); 563 if (lock) 564 { 565 SyncThreadState(process); 566 567 if (use_g_packet && gdb_comm.ReadAllRegisters(m_thread.GetProtocolID(), response)) 568 { 569 if (response.IsErrorResponse()) 570 return false; 571 572 std::string &response_str = response.GetStringRef(); 573 if (!isxdigit(response_str[0])) 574 return false; 575 576 data_sp.reset(new DataBufferHeap(response_str.c_str(), response_str.size())); 577 return true; 578 } 579 else 580 { 581 // For the use_g_packet == false case, we're going to read each register 582 // individually and store them as binary data in a buffer instead of as ascii 583 // characters. 584 const RegisterInfo *reg_info; 585 586 // data_sp will take ownership of this DataBufferHeap pointer soon. 587 DataBufferSP reg_ctx(new DataBufferHeap(m_reg_info.GetRegisterDataByteSize(), 0)); 588 589 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != NULL; i++) 590 { 591 if (reg_info->value_regs) // skip registers that are slices of real registers 592 continue; 593 ReadRegisterBytes(reg_info, m_reg_data); 594 // ReadRegisterBytes saves the contents of the register in to the m_reg_data buffer 595 } 596 memcpy(reg_ctx->GetBytes(), m_reg_data.GetDataStart(), m_reg_info.GetRegisterDataByteSize()); 597 598 data_sp = reg_ctx; 599 return true; 600 } 601 } 602 else 603 { 604 605 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS)); 606 if (log) 607 { 608 if (log->GetVerbose()) 609 { 610 StreamString strm; 611 gdb_comm.DumpHistory(strm); 612 log->Printf("error: failed to get packet sequence mutex, not sending read all registers:\n%s", strm.GetData()); 613 } 614 else 615 log->Printf("error: failed to get packet sequence mutex, not sending read all registers"); 616 } 617 } 618 619 data_sp.reset(); 620 return false; 621 } 622 623 bool 624 GDBRemoteRegisterContext::WriteAllRegisterValues (const lldb::DataBufferSP &data_sp) 625 { 626 if (!data_sp || data_sp->GetBytes() == NULL || data_sp->GetByteSize() == 0) 627 return false; 628 629 ExecutionContext exe_ctx (CalculateThread()); 630 631 Process *process = exe_ctx.GetProcessPtr(); 632 Thread *thread = exe_ctx.GetThreadPtr(); 633 if (process == NULL || thread == NULL) 634 return false; 635 636 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 637 638 const bool use_g_packet = gdb_comm.AvoidGPackets ((ProcessGDBRemote *)process) == false; 639 640 StringExtractorGDBRemote response; 641 GDBRemoteClientBase::Lock lock(gdb_comm, false); 642 if (lock) 643 { 644 // The data_sp contains the G response packet. 645 llvm::StringRef data(reinterpret_cast<const char *>(data_sp->GetBytes()), data_sp->GetByteSize()); 646 if (use_g_packet) 647 { 648 if (gdb_comm.WriteAllRegisters(m_thread.GetProtocolID(), data)) 649 return true; 650 651 uint32_t num_restored = 0; 652 // We need to manually go through all of the registers and 653 // restore them manually 654 655 response.GetStringRef() = data; 656 DataBufferHeap buffer(data.size() / 2, 0); 657 658 const uint32_t bytes_extracted = response.GetHexBytes(buffer.GetBytes(), buffer.GetByteSize(), '\xcc'); 659 660 DataExtractor restore_data(buffer.GetBytes(), buffer.GetByteSize(), m_reg_data.GetByteOrder(), 661 m_reg_data.GetAddressByteSize()); 662 663 if (bytes_extracted < restore_data.GetByteSize()) 664 restore_data.SetData(restore_data.GetDataStart(), bytes_extracted, m_reg_data.GetByteOrder()); 665 666 const RegisterInfo *reg_info; 667 668 // The g packet contents may either include the slice registers (registers defined in 669 // terms of other registers, e.g. eax is a subset of rax) or not. The slice registers 670 // should NOT be in the g packet, but some implementations may incorrectly include them. 671 // 672 // If the slice registers are included in the packet, we must step over the slice registers 673 // when parsing the packet -- relying on the RegisterInfo byte_offset field would be incorrect. 674 // If the slice registers are not included, then using the byte_offset values into the 675 // data buffer is the best way to find individual register values. 676 677 uint64_t size_including_slice_registers = 0; 678 uint64_t size_not_including_slice_registers = 0; 679 uint64_t size_by_highest_offset = 0; 680 681 for (uint32_t reg_idx = 0; (reg_info = GetRegisterInfoAtIndex(reg_idx)) != NULL; ++reg_idx) 682 { 683 size_including_slice_registers += reg_info->byte_size; 684 if (reg_info->value_regs == NULL) 685 size_not_including_slice_registers += reg_info->byte_size; 686 if (reg_info->byte_offset >= size_by_highest_offset) 687 size_by_highest_offset = reg_info->byte_offset + reg_info->byte_size; 688 } 689 690 bool use_byte_offset_into_buffer; 691 if (size_by_highest_offset == restore_data.GetByteSize()) 692 { 693 // The size of the packet agrees with the highest offset: + size in the register file 694 use_byte_offset_into_buffer = true; 695 } 696 else if (size_not_including_slice_registers == restore_data.GetByteSize()) 697 { 698 // The size of the packet is the same as concatenating all of the registers sequentially, 699 // skipping the slice registers 700 use_byte_offset_into_buffer = true; 701 } 702 else if (size_including_slice_registers == restore_data.GetByteSize()) 703 { 704 // The slice registers are present in the packet (when they shouldn't be). 705 // Don't try to use the RegisterInfo byte_offset into the restore_data, it will 706 // point to the wrong place. 707 use_byte_offset_into_buffer = false; 708 } 709 else 710 { 711 // None of our expected sizes match the actual g packet data we're looking at. 712 // The most conservative approach here is to use the running total byte offset. 713 use_byte_offset_into_buffer = false; 714 } 715 716 // In case our register definitions don't include the correct offsets, 717 // keep track of the size of each reg & compute offset based on that. 718 uint32_t running_byte_offset = 0; 719 for (uint32_t reg_idx = 0; (reg_info = GetRegisterInfoAtIndex(reg_idx)) != NULL; 720 ++reg_idx, running_byte_offset += reg_info->byte_size) 721 { 722 // Skip composite aka slice registers (e.g. eax is a slice of rax). 723 if (reg_info->value_regs) 724 continue; 725 726 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 727 728 uint32_t register_offset; 729 if (use_byte_offset_into_buffer) 730 { 731 register_offset = reg_info->byte_offset; 732 } 733 else 734 { 735 register_offset = running_byte_offset; 736 } 737 738 const uint32_t reg_byte_size = reg_info->byte_size; 739 740 const char *restore_src = (const char *)restore_data.PeekData(register_offset, reg_byte_size); 741 if (restore_src) 742 { 743 SetRegisterIsValid(reg, false); 744 if (gdb_comm.WriteRegister(m_thread.GetProtocolID(), reg_info->kinds[eRegisterKindProcessPlugin], 745 llvm::StringRef(restore_src, reg_byte_size))) 746 ++num_restored; 747 } 748 } 749 return num_restored > 0; 750 } 751 else 752 { 753 // For the use_g_packet == false case, we're going to write each register 754 // individually. The data buffer is binary data in this case, instead of 755 // ascii characters. 756 757 bool arm64_debugserver = false; 758 if (m_thread.GetProcess().get()) 759 { 760 const ArchSpec &arch = m_thread.GetProcess()->GetTarget().GetArchitecture(); 761 if (arch.IsValid() && arch.GetMachine() == llvm::Triple::aarch64 && 762 arch.GetTriple().getVendor() == llvm::Triple::Apple && 763 arch.GetTriple().getOS() == llvm::Triple::IOS) 764 { 765 arm64_debugserver = true; 766 } 767 } 768 uint32_t num_restored = 0; 769 const RegisterInfo *reg_info; 770 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != NULL; i++) 771 { 772 if (reg_info->value_regs) // skip registers that are slices of real registers 773 continue; 774 // Skip the fpsr and fpcr floating point status/control register writing to 775 // work around a bug in an older version of debugserver that would lead to 776 // register context corruption when writing fpsr/fpcr. 777 if (arm64_debugserver && (strcmp(reg_info->name, "fpsr") == 0 || strcmp(reg_info->name, "fpcr") == 0)) 778 { 779 continue; 780 } 781 782 SetRegisterIsValid(reg_info, false); 783 if (gdb_comm.WriteRegister( 784 m_thread.GetProtocolID(), reg_info->kinds[eRegisterKindProcessPlugin], 785 llvm::StringRef(reinterpret_cast<const char *>(data_sp->GetBytes() + reg_info->byte_offset), 786 reg_info->byte_size))) 787 { 788 ++num_restored; 789 } 790 } 791 return num_restored > 0; 792 } 793 } 794 else 795 { 796 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS)); 797 if (log) 798 { 799 if (log->GetVerbose()) 800 { 801 StreamString strm; 802 gdb_comm.DumpHistory(strm); 803 log->Printf("error: failed to get packet sequence mutex, not sending write all registers:\n%s", strm.GetData()); 804 } 805 else 806 log->Printf("error: failed to get packet sequence mutex, not sending write all registers"); 807 } 808 } 809 return false; 810 } 811 812 813 uint32_t 814 GDBRemoteRegisterContext::ConvertRegisterKindToRegisterNumber (lldb::RegisterKind kind, uint32_t num) 815 { 816 return m_reg_info.ConvertRegisterKindToRegisterNumber (kind, num); 817 } 818 819 820 void 821 GDBRemoteDynamicRegisterInfo::HardcodeARMRegisters(bool from_scratch) 822 { 823 // For Advanced SIMD and VFP register mapping. 824 static uint32_t g_d0_regs[] = { 26, 27, LLDB_INVALID_REGNUM }; // (s0, s1) 825 static uint32_t g_d1_regs[] = { 28, 29, LLDB_INVALID_REGNUM }; // (s2, s3) 826 static uint32_t g_d2_regs[] = { 30, 31, LLDB_INVALID_REGNUM }; // (s4, s5) 827 static uint32_t g_d3_regs[] = { 32, 33, LLDB_INVALID_REGNUM }; // (s6, s7) 828 static uint32_t g_d4_regs[] = { 34, 35, LLDB_INVALID_REGNUM }; // (s8, s9) 829 static uint32_t g_d5_regs[] = { 36, 37, LLDB_INVALID_REGNUM }; // (s10, s11) 830 static uint32_t g_d6_regs[] = { 38, 39, LLDB_INVALID_REGNUM }; // (s12, s13) 831 static uint32_t g_d7_regs[] = { 40, 41, LLDB_INVALID_REGNUM }; // (s14, s15) 832 static uint32_t g_d8_regs[] = { 42, 43, LLDB_INVALID_REGNUM }; // (s16, s17) 833 static uint32_t g_d9_regs[] = { 44, 45, LLDB_INVALID_REGNUM }; // (s18, s19) 834 static uint32_t g_d10_regs[] = { 46, 47, LLDB_INVALID_REGNUM }; // (s20, s21) 835 static uint32_t g_d11_regs[] = { 48, 49, LLDB_INVALID_REGNUM }; // (s22, s23) 836 static uint32_t g_d12_regs[] = { 50, 51, LLDB_INVALID_REGNUM }; // (s24, s25) 837 static uint32_t g_d13_regs[] = { 52, 53, LLDB_INVALID_REGNUM }; // (s26, s27) 838 static uint32_t g_d14_regs[] = { 54, 55, LLDB_INVALID_REGNUM }; // (s28, s29) 839 static uint32_t g_d15_regs[] = { 56, 57, LLDB_INVALID_REGNUM }; // (s30, s31) 840 static uint32_t g_q0_regs[] = { 26, 27, 28, 29, LLDB_INVALID_REGNUM }; // (d0, d1) -> (s0, s1, s2, s3) 841 static uint32_t g_q1_regs[] = { 30, 31, 32, 33, LLDB_INVALID_REGNUM }; // (d2, d3) -> (s4, s5, s6, s7) 842 static uint32_t g_q2_regs[] = { 34, 35, 36, 37, LLDB_INVALID_REGNUM }; // (d4, d5) -> (s8, s9, s10, s11) 843 static uint32_t g_q3_regs[] = { 38, 39, 40, 41, LLDB_INVALID_REGNUM }; // (d6, d7) -> (s12, s13, s14, s15) 844 static uint32_t g_q4_regs[] = { 42, 43, 44, 45, LLDB_INVALID_REGNUM }; // (d8, d9) -> (s16, s17, s18, s19) 845 static uint32_t g_q5_regs[] = { 46, 47, 48, 49, LLDB_INVALID_REGNUM }; // (d10, d11) -> (s20, s21, s22, s23) 846 static uint32_t g_q6_regs[] = { 50, 51, 52, 53, LLDB_INVALID_REGNUM }; // (d12, d13) -> (s24, s25, s26, s27) 847 static uint32_t g_q7_regs[] = { 54, 55, 56, 57, LLDB_INVALID_REGNUM }; // (d14, d15) -> (s28, s29, s30, s31) 848 static uint32_t g_q8_regs[] = { 59, 60, LLDB_INVALID_REGNUM }; // (d16, d17) 849 static uint32_t g_q9_regs[] = { 61, 62, LLDB_INVALID_REGNUM }; // (d18, d19) 850 static uint32_t g_q10_regs[] = { 63, 64, LLDB_INVALID_REGNUM }; // (d20, d21) 851 static uint32_t g_q11_regs[] = { 65, 66, LLDB_INVALID_REGNUM }; // (d22, d23) 852 static uint32_t g_q12_regs[] = { 67, 68, LLDB_INVALID_REGNUM }; // (d24, d25) 853 static uint32_t g_q13_regs[] = { 69, 70, LLDB_INVALID_REGNUM }; // (d26, d27) 854 static uint32_t g_q14_regs[] = { 71, 72, LLDB_INVALID_REGNUM }; // (d28, d29) 855 static uint32_t g_q15_regs[] = { 73, 74, LLDB_INVALID_REGNUM }; // (d30, d31) 856 857 // This is our array of composite registers, with each element coming from the above register mappings. 858 static uint32_t *g_composites[] = { 859 g_d0_regs, g_d1_regs, g_d2_regs, g_d3_regs, g_d4_regs, g_d5_regs, g_d6_regs, g_d7_regs, 860 g_d8_regs, g_d9_regs, g_d10_regs, g_d11_regs, g_d12_regs, g_d13_regs, g_d14_regs, g_d15_regs, 861 g_q0_regs, g_q1_regs, g_q2_regs, g_q3_regs, g_q4_regs, g_q5_regs, g_q6_regs, g_q7_regs, 862 g_q8_regs, g_q9_regs, g_q10_regs, g_q11_regs, g_q12_regs, g_q13_regs, g_q14_regs, g_q15_regs 863 }; 864 865 // clang-format off 866 static RegisterInfo g_register_infos[] = { 867 // NAME ALT SZ OFF ENCODING FORMAT EH_FRAME DWARF GENERIC PROCESS PLUGIN LLDB VALUE REGS INVALIDATE REGS SIZE EXPR SIZE LEN 868 // ====== ====== === === ============= ========== =================== =================== ====================== ============= ==== ========== =============== ========= ======== 869 { "r0", "arg1", 4, 0, eEncodingUint, eFormatHex, { ehframe_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1,0, 0 }, nullptr, nullptr, nullptr, 0 }, 870 { "r1", "arg2", 4, 0, eEncodingUint, eFormatHex, { ehframe_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2,1, 1 }, nullptr, nullptr, nullptr, 0 }, 871 { "r2", "arg3", 4, 0, eEncodingUint, eFormatHex, { ehframe_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3,2, 2 }, nullptr, nullptr, nullptr, 0 }, 872 { "r3", "arg4", 4, 0, eEncodingUint, eFormatHex, { ehframe_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4,3, 3 }, nullptr, nullptr, nullptr, 0 }, 873 { "r4", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r4, dwarf_r4, LLDB_INVALID_REGNUM, 4, 4 }, nullptr, nullptr, nullptr, 0 }, 874 { "r5", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r5, dwarf_r5, LLDB_INVALID_REGNUM, 5, 5 }, nullptr, nullptr, nullptr, 0 }, 875 { "r6", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r6, dwarf_r6, LLDB_INVALID_REGNUM, 6, 6 }, nullptr, nullptr, nullptr, 0 }, 876 { "r7", "fp", 4, 0, eEncodingUint, eFormatHex, { ehframe_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, 7, 7 }, nullptr, nullptr, nullptr, 0 }, 877 { "r8", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r8, dwarf_r8, LLDB_INVALID_REGNUM, 8, 8 }, nullptr, nullptr, nullptr, 0 }, 878 { "r9", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r9, dwarf_r9, LLDB_INVALID_REGNUM, 9, 9 }, nullptr, nullptr, nullptr, 0 }, 879 { "r10", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r10, dwarf_r10, LLDB_INVALID_REGNUM, 10, 10 }, nullptr, nullptr, nullptr, 0 }, 880 { "r11", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r11, dwarf_r11, LLDB_INVALID_REGNUM, 11, 11 }, nullptr, nullptr, nullptr, 0 }, 881 { "r12", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r12, dwarf_r12, LLDB_INVALID_REGNUM, 12, 12 }, nullptr, nullptr, nullptr, 0 }, 882 { "sp", "r13", 4, 0, eEncodingUint, eFormatHex, { ehframe_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, 13, 13 }, nullptr, nullptr, nullptr, 0 }, 883 { "lr", "r14", 4, 0, eEncodingUint, eFormatHex, { ehframe_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, 14, 14 }, nullptr, nullptr, nullptr, 0 }, 884 { "pc", "r15", 4, 0, eEncodingUint, eFormatHex, { ehframe_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, 15, 15 }, nullptr, nullptr, nullptr, 0 }, 885 { "f0", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 16, 16 }, nullptr, nullptr, nullptr, 0 }, 886 { "f1", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 17, 17 }, nullptr, nullptr, nullptr, 0 }, 887 { "f2", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 18, 18 }, nullptr, nullptr, nullptr, 0 }, 888 { "f3", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 19, 19 }, nullptr, nullptr, nullptr, 0 }, 889 { "f4", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 20, 20 }, nullptr, nullptr, nullptr, 0 }, 890 { "f5", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 21, 21 }, nullptr, nullptr, nullptr, 0 }, 891 { "f6", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 22, 22 }, nullptr, nullptr, nullptr, 0 }, 892 { "f7", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 23, 23 }, nullptr, nullptr, nullptr, 0 }, 893 { "fps", nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 24, 24 }, nullptr, nullptr, nullptr, 0 }, 894 { "cpsr","flags", 4, 0, eEncodingUint, eFormatHex, { ehframe_cpsr, dwarf_cpsr, LLDB_INVALID_REGNUM, 25, 25 }, nullptr, nullptr, nullptr, 0 }, 895 { "s0", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, 26, 26 }, nullptr, nullptr, nullptr, 0 }, 896 { "s1", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, 27, 27 }, nullptr, nullptr, nullptr, 0 }, 897 { "s2", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, 28, 28 }, nullptr, nullptr, nullptr, 0 }, 898 { "s3", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, 29, 29 }, nullptr, nullptr, nullptr, 0 }, 899 { "s4", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, 30, 30 }, nullptr, nullptr, nullptr, 0 }, 900 { "s5", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, 31, 31 }, nullptr, nullptr, nullptr, 0 }, 901 { "s6", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, 32, 32 }, nullptr, nullptr, nullptr, 0 }, 902 { "s7", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, 33, 33 }, nullptr, nullptr, nullptr, 0 }, 903 { "s8", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, 34, 34 }, nullptr, nullptr, nullptr, 0 }, 904 { "s9", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, 35, 35 }, nullptr, nullptr, nullptr, 0 }, 905 { "s10", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, 36, 36 }, nullptr, nullptr, nullptr, 0 }, 906 { "s11", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, 37, 37 }, nullptr, nullptr, nullptr, 0 }, 907 { "s12", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, 38, 38 }, nullptr, nullptr, nullptr, 0 }, 908 { "s13", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, 39, 39 }, nullptr, nullptr, nullptr, 0 }, 909 { "s14", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, 40, 40 }, nullptr, nullptr, nullptr, 0 }, 910 { "s15", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, 41, 41 }, nullptr, nullptr, nullptr, 0 }, 911 { "s16", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, 42, 42 }, nullptr, nullptr, nullptr, 0 }, 912 { "s17", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, 43, 43 }, nullptr, nullptr, nullptr, 0 }, 913 { "s18", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, 44, 44 }, nullptr, nullptr, nullptr, 0 }, 914 { "s19", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, 45, 45 }, nullptr, nullptr, nullptr, 0 }, 915 { "s20", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, 46, 46 }, nullptr, nullptr, nullptr, 0 }, 916 { "s21", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, 47, 47 }, nullptr, nullptr, nullptr, 0 }, 917 { "s22", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, 48, 48 }, nullptr, nullptr, nullptr, 0 }, 918 { "s23", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, 49, 49 }, nullptr, nullptr, nullptr, 0 }, 919 { "s24", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, 50, 50 }, nullptr, nullptr, nullptr, 0 }, 920 { "s25", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, 51, 51 }, nullptr, nullptr, nullptr, 0 }, 921 { "s26", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, 52, 52 }, nullptr, nullptr, nullptr, 0 }, 922 { "s27", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, 53, 53 }, nullptr, nullptr, nullptr, 0 }, 923 { "s28", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, 54, 54 }, nullptr, nullptr, nullptr, 0 }, 924 { "s29", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, 55, 55 }, nullptr, nullptr, nullptr, 0 }, 925 { "s30", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, 56, 56 }, nullptr, nullptr, nullptr, 0 }, 926 { "s31", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, 57, 57 }, nullptr, nullptr, nullptr, 0 }, 927 { "fpscr",nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 58, 58 }, nullptr, nullptr, nullptr, 0 }, 928 { "d16", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, 59, 59 }, nullptr, nullptr, nullptr, 0 }, 929 { "d17", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, 60, 60 }, nullptr, nullptr, nullptr, 0 }, 930 { "d18", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, 61, 61 }, nullptr, nullptr, nullptr, 0 }, 931 { "d19", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, 62, 62 }, nullptr, nullptr, nullptr, 0 }, 932 { "d20", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, 63, 63 }, nullptr, nullptr, nullptr, 0 }, 933 { "d21", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, 64, 64 }, nullptr, nullptr, nullptr, 0 }, 934 { "d22", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, 65, 65 }, nullptr, nullptr, nullptr, 0 }, 935 { "d23", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, 66, 66 }, nullptr, nullptr, nullptr, 0 }, 936 { "d24", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, 67, 67 }, nullptr, nullptr, nullptr, 0 }, 937 { "d25", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, 68, 68 }, nullptr, nullptr, nullptr, 0 }, 938 { "d26", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, 69, 69 }, nullptr, nullptr, nullptr, 0 }, 939 { "d27", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, 70, 70 }, nullptr, nullptr, nullptr, 0 }, 940 { "d28", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, 71, 71 }, nullptr, nullptr, nullptr, 0 }, 941 { "d29", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, 72, 72 }, nullptr, nullptr, nullptr, 0 }, 942 { "d30", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, 73, 73 }, nullptr, nullptr, nullptr, 0 }, 943 { "d31", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, 74, 74 }, nullptr, nullptr, nullptr, 0 }, 944 { "d0", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, 75, 75 }, g_d0_regs, nullptr, nullptr, 0 }, 945 { "d1", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, 76, 76 }, g_d1_regs, nullptr, nullptr, 0 }, 946 { "d2", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, 77, 77 }, g_d2_regs, nullptr, nullptr, 0 }, 947 { "d3", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, 78, 78 }, g_d3_regs, nullptr, nullptr, 0 }, 948 { "d4", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, 79, 79 }, g_d4_regs, nullptr, nullptr, 0 }, 949 { "d5", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, 80, 80 }, g_d5_regs, nullptr, nullptr, 0 }, 950 { "d6", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, 81, 81 }, g_d6_regs, nullptr, nullptr, 0 }, 951 { "d7", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, 82, 82 }, g_d7_regs, nullptr, nullptr, 0 }, 952 { "d8", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, 83, 83 }, g_d8_regs, nullptr, nullptr, 0 }, 953 { "d9", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, 84, 84 }, g_d9_regs, nullptr, nullptr, 0 }, 954 { "d10", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, 85, 85 }, g_d10_regs, nullptr, nullptr, 0 }, 955 { "d11", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, 86, 86 }, g_d11_regs, nullptr, nullptr, 0 }, 956 { "d12", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, 87, 87 }, g_d12_regs, nullptr, nullptr, 0 }, 957 { "d13", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, 88, 88 }, g_d13_regs, nullptr, nullptr, 0 }, 958 { "d14", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, 89, 89 }, g_d14_regs, nullptr, nullptr, 0 }, 959 { "d15", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, 90, 90 }, g_d15_regs, nullptr, nullptr, 0 }, 960 { "q0", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q0, LLDB_INVALID_REGNUM, 91, 91 }, g_q0_regs, nullptr, nullptr, 0 }, 961 { "q1", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q1, LLDB_INVALID_REGNUM, 92, 92 }, g_q1_regs, nullptr, nullptr, 0 }, 962 { "q2", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q2, LLDB_INVALID_REGNUM, 93, 93 }, g_q2_regs, nullptr, nullptr, 0 }, 963 { "q3", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q3, LLDB_INVALID_REGNUM, 94, 94 }, g_q3_regs, nullptr, nullptr, 0 }, 964 { "q4", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q4, LLDB_INVALID_REGNUM, 95, 95 }, g_q4_regs, nullptr, nullptr, 0 }, 965 { "q5", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q5, LLDB_INVALID_REGNUM, 96, 96 }, g_q5_regs, nullptr, nullptr, 0 }, 966 { "q6", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q6, LLDB_INVALID_REGNUM, 97, 97 }, g_q6_regs, nullptr, nullptr, 0 }, 967 { "q7", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q7, LLDB_INVALID_REGNUM, 98, 98 }, g_q7_regs, nullptr, nullptr, 0 }, 968 { "q8", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q8, LLDB_INVALID_REGNUM, 99, 99 }, g_q8_regs, nullptr, nullptr, 0 }, 969 { "q9", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q9, LLDB_INVALID_REGNUM, 100, 100 }, g_q9_regs, nullptr, nullptr, 0 }, 970 { "q10", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q10, LLDB_INVALID_REGNUM, 101, 101 }, g_q10_regs, nullptr, nullptr, 0 }, 971 { "q11", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q11, LLDB_INVALID_REGNUM, 102, 102 }, g_q11_regs, nullptr, nullptr, 0 }, 972 { "q12", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q12, LLDB_INVALID_REGNUM, 103, 103 }, g_q12_regs, nullptr, nullptr, 0 }, 973 { "q13", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q13, LLDB_INVALID_REGNUM, 104, 104 }, g_q13_regs, nullptr, nullptr, 0 }, 974 { "q14", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q14, LLDB_INVALID_REGNUM, 105, 105 }, g_q14_regs, nullptr, nullptr, 0 }, 975 { "q15", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q15, LLDB_INVALID_REGNUM, 106, 106 }, g_q15_regs, nullptr, nullptr, 0 } 976 }; 977 // clang-format on 978 979 static const uint32_t num_registers = llvm::array_lengthof(g_register_infos); 980 static ConstString gpr_reg_set ("General Purpose Registers"); 981 static ConstString sfp_reg_set ("Software Floating Point Registers"); 982 static ConstString vfp_reg_set ("Floating Point Registers"); 983 size_t i; 984 if (from_scratch) 985 { 986 // Calculate the offsets of the registers 987 // Note that the layout of the "composite" registers (d0-d15 and q0-q15) which comes after the 988 // "primordial" registers is important. This enables us to calculate the offset of the composite 989 // register by using the offset of its first primordial register. For example, to calculate the 990 // offset of q0, use s0's offset. 991 if (g_register_infos[2].byte_offset == 0) 992 { 993 uint32_t byte_offset = 0; 994 for (i=0; i<num_registers; ++i) 995 { 996 // For primordial registers, increment the byte_offset by the byte_size to arrive at the 997 // byte_offset for the next register. Otherwise, we have a composite register whose 998 // offset can be calculated by consulting the offset of its first primordial register. 999 if (!g_register_infos[i].value_regs) 1000 { 1001 g_register_infos[i].byte_offset = byte_offset; 1002 byte_offset += g_register_infos[i].byte_size; 1003 } 1004 else 1005 { 1006 const uint32_t first_primordial_reg = g_register_infos[i].value_regs[0]; 1007 g_register_infos[i].byte_offset = g_register_infos[first_primordial_reg].byte_offset; 1008 } 1009 } 1010 } 1011 for (i=0; i<num_registers; ++i) 1012 { 1013 ConstString name; 1014 ConstString alt_name; 1015 if (g_register_infos[i].name && g_register_infos[i].name[0]) 1016 name.SetCString(g_register_infos[i].name); 1017 if (g_register_infos[i].alt_name && g_register_infos[i].alt_name[0]) 1018 alt_name.SetCString(g_register_infos[i].alt_name); 1019 1020 if (i <= 15 || i == 25) 1021 AddRegister (g_register_infos[i], name, alt_name, gpr_reg_set); 1022 else if (i <= 24) 1023 AddRegister (g_register_infos[i], name, alt_name, sfp_reg_set); 1024 else 1025 AddRegister (g_register_infos[i], name, alt_name, vfp_reg_set); 1026 } 1027 } 1028 else 1029 { 1030 // Add composite registers to our primordial registers, then. 1031 const size_t num_composites = llvm::array_lengthof(g_composites); 1032 const size_t num_dynamic_regs = GetNumRegisters(); 1033 const size_t num_common_regs = num_registers - num_composites; 1034 RegisterInfo *g_comp_register_infos = g_register_infos + num_common_regs; 1035 1036 // First we need to validate that all registers that we already have match the non composite regs. 1037 // If so, then we can add the registers, else we need to bail 1038 bool match = true; 1039 if (num_dynamic_regs == num_common_regs) 1040 { 1041 for (i=0; match && i<num_dynamic_regs; ++i) 1042 { 1043 // Make sure all register names match 1044 if (m_regs[i].name && g_register_infos[i].name) 1045 { 1046 if (strcmp(m_regs[i].name, g_register_infos[i].name)) 1047 { 1048 match = false; 1049 break; 1050 } 1051 } 1052 1053 // Make sure all register byte sizes match 1054 if (m_regs[i].byte_size != g_register_infos[i].byte_size) 1055 { 1056 match = false; 1057 break; 1058 } 1059 } 1060 } 1061 else 1062 { 1063 // Wrong number of registers. 1064 match = false; 1065 } 1066 // If "match" is true, then we can add extra registers. 1067 if (match) 1068 { 1069 for (i=0; i<num_composites; ++i) 1070 { 1071 ConstString name; 1072 ConstString alt_name; 1073 const uint32_t first_primordial_reg = g_comp_register_infos[i].value_regs[0]; 1074 const char *reg_name = g_register_infos[first_primordial_reg].name; 1075 if (reg_name && reg_name[0]) 1076 { 1077 for (uint32_t j = 0; j < num_dynamic_regs; ++j) 1078 { 1079 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(j); 1080 // Find a matching primordial register info entry. 1081 if (reg_info && reg_info->name && ::strcasecmp(reg_info->name, reg_name) == 0) 1082 { 1083 // The name matches the existing primordial entry. 1084 // Find and assign the offset, and then add this composite register entry. 1085 g_comp_register_infos[i].byte_offset = reg_info->byte_offset; 1086 name.SetCString(g_comp_register_infos[i].name); 1087 AddRegister(g_comp_register_infos[i], name, alt_name, vfp_reg_set); 1088 } 1089 } 1090 } 1091 } 1092 } 1093 } 1094 } 1095