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