1 //===-- GDBRemoteRegisterContext.cpp ----------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "GDBRemoteRegisterContext.h" 10 11 #include "lldb/Target/ExecutionContext.h" 12 #include "lldb/Target/Target.h" 13 #include "lldb/Utility/DataBufferHeap.h" 14 #include "lldb/Utility/DataExtractor.h" 15 #include "lldb/Utility/RegisterValue.h" 16 #include "lldb/Utility/Scalar.h" 17 #include "lldb/Utility/StreamString.h" 18 #include "ProcessGDBRemote.h" 19 #include "ProcessGDBRemoteLog.h" 20 #include "ThreadGDBRemote.h" 21 #include "Utility/ARM_DWARF_Registers.h" 22 #include "Utility/ARM_ehframe_Registers.h" 23 #include "lldb/Utility/StringExtractorGDBRemote.h" 24 25 #include <memory> 26 27 using namespace lldb; 28 using namespace lldb_private; 29 using namespace lldb_private::process_gdb_remote; 30 31 // GDBRemoteRegisterContext constructor 32 GDBRemoteRegisterContext::GDBRemoteRegisterContext( 33 ThreadGDBRemote &thread, uint32_t concrete_frame_idx, 34 GDBRemoteDynamicRegisterInfo ®_info, bool read_all_at_once, 35 bool write_all_at_once) 36 : RegisterContext(thread, concrete_frame_idx), m_reg_info(reg_info), 37 m_reg_valid(), m_reg_data(), m_read_all_at_once(read_all_at_once), 38 m_write_all_at_once(write_all_at_once) { 39 // Resize our vector of bools to contain one bool for every register. We will 40 // use these boolean values to know when a register value is valid in 41 // m_reg_data. 42 m_reg_valid.resize(reg_info.GetNumRegisters()); 43 44 // Make a heap based buffer that is big enough to store all registers 45 DataBufferSP reg_data_sp( 46 new DataBufferHeap(reg_info.GetRegisterDataByteSize(), 0)); 47 m_reg_data.SetData(reg_data_sp); 48 m_reg_data.SetByteOrder(thread.GetProcess()->GetByteOrder()); 49 } 50 51 // Destructor 52 GDBRemoteRegisterContext::~GDBRemoteRegisterContext() {} 53 54 void GDBRemoteRegisterContext::InvalidateAllRegisters() { 55 SetAllRegisterValid(false); 56 } 57 58 void GDBRemoteRegisterContext::SetAllRegisterValid(bool b) { 59 std::vector<bool>::iterator pos, end = m_reg_valid.end(); 60 for (pos = m_reg_valid.begin(); pos != end; ++pos) 61 *pos = b; 62 } 63 64 size_t GDBRemoteRegisterContext::GetRegisterCount() { 65 return m_reg_info.GetNumRegisters(); 66 } 67 68 const RegisterInfo * 69 GDBRemoteRegisterContext::GetRegisterInfoAtIndex(size_t reg) { 70 RegisterInfo *reg_info = m_reg_info.GetRegisterInfoAtIndex(reg); 71 72 if (reg_info && reg_info->dynamic_size_dwarf_expr_bytes) { 73 const ArchSpec &arch = m_thread.GetProcess()->GetTarget().GetArchitecture(); 74 uint8_t reg_size = UpdateDynamicRegisterSize(arch, reg_info); 75 reg_info->byte_size = reg_size; 76 } 77 return reg_info; 78 } 79 80 size_t GDBRemoteRegisterContext::GetRegisterSetCount() { 81 return m_reg_info.GetNumRegisterSets(); 82 } 83 84 const RegisterSet *GDBRemoteRegisterContext::GetRegisterSet(size_t reg_set) { 85 return m_reg_info.GetRegisterSet(reg_set); 86 } 87 88 bool GDBRemoteRegisterContext::ReadRegister(const RegisterInfo *reg_info, 89 RegisterValue &value) { 90 // Read the register 91 if (ReadRegisterBytes(reg_info, m_reg_data)) { 92 const bool partial_data_ok = false; 93 Status error(value.SetValueFromData( 94 reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok)); 95 return error.Success(); 96 } 97 return false; 98 } 99 100 bool GDBRemoteRegisterContext::PrivateSetRegisterValue( 101 uint32_t reg, llvm::ArrayRef<uint8_t> data) { 102 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg); 103 if (reg_info == nullptr) 104 return false; 105 106 // Invalidate if needed 107 InvalidateIfNeeded(false); 108 109 const size_t reg_byte_size = reg_info->byte_size; 110 memcpy(const_cast<uint8_t *>( 111 m_reg_data.PeekData(reg_info->byte_offset, reg_byte_size)), 112 data.data(), std::min(data.size(), reg_byte_size)); 113 bool success = data.size() >= reg_byte_size; 114 if (success) { 115 SetRegisterIsValid(reg, true); 116 } else if (data.size() > 0) { 117 // Only set register is valid to false if we copied some bytes, else leave 118 // it as it was. 119 SetRegisterIsValid(reg, false); 120 } 121 return success; 122 } 123 124 bool GDBRemoteRegisterContext::PrivateSetRegisterValue(uint32_t reg, 125 uint64_t new_reg_val) { 126 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg); 127 if (reg_info == nullptr) 128 return false; 129 130 // Early in process startup, we can get a thread that has an invalid byte 131 // order because the process hasn't been completely set up yet (see the ctor 132 // where the byte order is setfrom the process). If that's the case, we 133 // can't set the value here. 134 if (m_reg_data.GetByteOrder() == eByteOrderInvalid) { 135 return false; 136 } 137 138 // Invalidate if needed 139 InvalidateIfNeeded(false); 140 141 DataBufferSP buffer_sp(new DataBufferHeap(&new_reg_val, sizeof(new_reg_val))); 142 DataExtractor data(buffer_sp, endian::InlHostByteOrder(), sizeof(void *)); 143 144 // If our register context and our register info disagree, which should never 145 // happen, don't overwrite past the end of the buffer. 146 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 147 return false; 148 149 // Grab a pointer to where we are going to put this register 150 uint8_t *dst = const_cast<uint8_t *>( 151 m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 152 153 if (dst == nullptr) 154 return false; 155 156 if (data.CopyByteOrderedData(0, // src offset 157 reg_info->byte_size, // src length 158 dst, // dst 159 reg_info->byte_size, // dst length 160 m_reg_data.GetByteOrder())) // dst byte order 161 { 162 SetRegisterIsValid(reg, true); 163 return true; 164 } 165 return false; 166 } 167 168 // Helper function for GDBRemoteRegisterContext::ReadRegisterBytes(). 169 bool GDBRemoteRegisterContext::GetPrimordialRegister( 170 const RegisterInfo *reg_info, GDBRemoteCommunicationClient &gdb_comm) { 171 const uint32_t lldb_reg = reg_info->kinds[eRegisterKindLLDB]; 172 const uint32_t remote_reg = reg_info->kinds[eRegisterKindProcessPlugin]; 173 174 if (DataBufferSP buffer_sp = 175 gdb_comm.ReadRegister(m_thread.GetProtocolID(), remote_reg)) 176 return PrivateSetRegisterValue( 177 lldb_reg, llvm::ArrayRef<uint8_t>(buffer_sp->GetBytes(), 178 buffer_sp->GetByteSize())); 179 return false; 180 } 181 182 bool GDBRemoteRegisterContext::ReadRegisterBytes(const RegisterInfo *reg_info, 183 DataExtractor &data) { 184 ExecutionContext exe_ctx(CalculateThread()); 185 186 Process *process = exe_ctx.GetProcessPtr(); 187 Thread *thread = exe_ctx.GetThreadPtr(); 188 if (process == nullptr || thread == nullptr) 189 return false; 190 191 GDBRemoteCommunicationClient &gdb_comm( 192 ((ProcessGDBRemote *)process)->GetGDBRemote()); 193 194 InvalidateIfNeeded(false); 195 196 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 197 198 if (!GetRegisterIsValid(reg)) { 199 if (m_read_all_at_once) { 200 if (DataBufferSP buffer_sp = 201 gdb_comm.ReadAllRegisters(m_thread.GetProtocolID())) { 202 memcpy(const_cast<uint8_t *>(m_reg_data.GetDataStart()), 203 buffer_sp->GetBytes(), 204 std::min(buffer_sp->GetByteSize(), m_reg_data.GetByteSize())); 205 if (buffer_sp->GetByteSize() >= m_reg_data.GetByteSize()) { 206 SetAllRegisterValid(true); 207 return true; 208 } else { 209 Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 210 GDBR_LOG_PACKETS)); 211 LLDB_LOGF( 212 log, 213 "error: GDBRemoteRegisterContext::ReadRegisterBytes tried " 214 "to read the " 215 "entire register context at once, expected at least %" PRId64 216 " bytes " 217 "but only got %" PRId64 " bytes.", 218 m_reg_data.GetByteSize(), buffer_sp->GetByteSize()); 219 } 220 } 221 return false; 222 } 223 if (reg_info->value_regs) { 224 // Process this composite register request by delegating to the 225 // constituent primordial registers. 226 227 // Index of the primordial register. 228 bool success = true; 229 for (uint32_t idx = 0; success; ++idx) { 230 const uint32_t prim_reg = reg_info->value_regs[idx]; 231 if (prim_reg == LLDB_INVALID_REGNUM) 232 break; 233 // We have a valid primordial register as our constituent. Grab the 234 // corresponding register info. 235 const RegisterInfo *prim_reg_info = GetRegisterInfoAtIndex(prim_reg); 236 if (prim_reg_info == nullptr) 237 success = false; 238 else { 239 // Read the containing register if it hasn't already been read 240 if (!GetRegisterIsValid(prim_reg)) 241 success = GetPrimordialRegister(prim_reg_info, gdb_comm); 242 } 243 } 244 245 if (success) { 246 // If we reach this point, all primordial register requests have 247 // succeeded. Validate this composite register. 248 SetRegisterIsValid(reg_info, true); 249 } 250 } else { 251 // Get each register individually 252 GetPrimordialRegister(reg_info, gdb_comm); 253 } 254 255 // Make sure we got a valid register value after reading it 256 if (!GetRegisterIsValid(reg)) 257 return false; 258 } 259 260 if (&data != &m_reg_data) { 261 assert(m_reg_data.GetByteSize() >= 262 reg_info->byte_offset + reg_info->byte_size); 263 // If our register context and our register info disagree, which should 264 // never happen, don't read past the end of the buffer. 265 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 266 return false; 267 268 // If we aren't extracting into our own buffer (which only happens when 269 // this function is called from ReadRegisterValue(uint32_t, Scalar&)) then 270 // we transfer bytes from our buffer into the data buffer that was passed 271 // in 272 273 data.SetByteOrder(m_reg_data.GetByteOrder()); 274 data.SetData(m_reg_data, reg_info->byte_offset, reg_info->byte_size); 275 } 276 return true; 277 } 278 279 bool GDBRemoteRegisterContext::WriteRegister(const RegisterInfo *reg_info, 280 const RegisterValue &value) { 281 DataExtractor data; 282 if (value.GetData(data)) 283 return WriteRegisterBytes(reg_info, data, 0); 284 return false; 285 } 286 287 // Helper function for GDBRemoteRegisterContext::WriteRegisterBytes(). 288 bool GDBRemoteRegisterContext::SetPrimordialRegister( 289 const RegisterInfo *reg_info, GDBRemoteCommunicationClient &gdb_comm) { 290 StreamString packet; 291 StringExtractorGDBRemote response; 292 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 293 // Invalidate just this register 294 SetRegisterIsValid(reg, false); 295 296 return gdb_comm.WriteRegister( 297 m_thread.GetProtocolID(), reg_info->kinds[eRegisterKindProcessPlugin], 298 {m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size), 299 reg_info->byte_size}); 300 } 301 302 bool GDBRemoteRegisterContext::WriteRegisterBytes(const RegisterInfo *reg_info, 303 DataExtractor &data, 304 uint32_t data_offset) { 305 ExecutionContext exe_ctx(CalculateThread()); 306 307 Process *process = exe_ctx.GetProcessPtr(); 308 Thread *thread = exe_ctx.GetThreadPtr(); 309 if (process == nullptr || thread == nullptr) 310 return false; 311 312 GDBRemoteCommunicationClient &gdb_comm( 313 ((ProcessGDBRemote *)process)->GetGDBRemote()); 314 315 assert(m_reg_data.GetByteSize() >= 316 reg_info->byte_offset + reg_info->byte_size); 317 318 // If our register context and our register info disagree, which should never 319 // happen, don't overwrite past the end of the buffer. 320 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 321 return false; 322 323 // Grab a pointer to where we are going to put this register 324 uint8_t *dst = const_cast<uint8_t *>( 325 m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 326 327 if (dst == nullptr) 328 return false; 329 330 if (data.CopyByteOrderedData(data_offset, // src offset 331 reg_info->byte_size, // src length 332 dst, // dst 333 reg_info->byte_size, // dst length 334 m_reg_data.GetByteOrder())) // dst byte order 335 { 336 GDBRemoteClientBase::Lock lock(gdb_comm, false); 337 if (lock) { 338 if (m_write_all_at_once) { 339 // Invalidate all register values 340 InvalidateIfNeeded(true); 341 342 // Set all registers in one packet 343 if (gdb_comm.WriteAllRegisters( 344 m_thread.GetProtocolID(), 345 {m_reg_data.GetDataStart(), size_t(m_reg_data.GetByteSize())})) 346 347 { 348 SetAllRegisterValid(false); 349 return true; 350 } 351 } else { 352 bool success = true; 353 354 if (reg_info->value_regs) { 355 // This register is part of another register. In this case we read 356 // the actual register data for any "value_regs", and once all that 357 // data is read, we will have enough data in our register context 358 // bytes for the value of this register 359 360 // Invalidate this composite register first. 361 362 for (uint32_t idx = 0; success; ++idx) { 363 const uint32_t reg = reg_info->value_regs[idx]; 364 if (reg == LLDB_INVALID_REGNUM) 365 break; 366 // We have a valid primordial register as our constituent. Grab the 367 // corresponding register info. 368 const RegisterInfo *value_reg_info = GetRegisterInfoAtIndex(reg); 369 if (value_reg_info == nullptr) 370 success = false; 371 else 372 success = SetPrimordialRegister(value_reg_info, gdb_comm); 373 } 374 } else { 375 // This is an actual register, write it 376 success = SetPrimordialRegister(reg_info, gdb_comm); 377 } 378 379 // Check if writing this register will invalidate any other register 380 // values? If so, invalidate them 381 if (reg_info->invalidate_regs) { 382 for (uint32_t idx = 0, reg = reg_info->invalidate_regs[0]; 383 reg != LLDB_INVALID_REGNUM; 384 reg = reg_info->invalidate_regs[++idx]) { 385 SetRegisterIsValid(reg, false); 386 } 387 } 388 389 return success; 390 } 391 } else { 392 Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 393 GDBR_LOG_PACKETS)); 394 if (log) { 395 if (log->GetVerbose()) { 396 StreamString strm; 397 gdb_comm.DumpHistory(strm); 398 LLDB_LOGF(log, 399 "error: failed to get packet sequence mutex, not sending " 400 "write register for \"%s\":\n%s", 401 reg_info->name, strm.GetData()); 402 } else 403 LLDB_LOGF(log, 404 "error: failed to get packet sequence mutex, not sending " 405 "write register for \"%s\"", 406 reg_info->name); 407 } 408 } 409 } 410 return false; 411 } 412 413 bool GDBRemoteRegisterContext::ReadAllRegisterValues( 414 RegisterCheckpoint ®_checkpoint) { 415 ExecutionContext exe_ctx(CalculateThread()); 416 417 Process *process = exe_ctx.GetProcessPtr(); 418 Thread *thread = exe_ctx.GetThreadPtr(); 419 if (process == nullptr || thread == nullptr) 420 return false; 421 422 GDBRemoteCommunicationClient &gdb_comm( 423 ((ProcessGDBRemote *)process)->GetGDBRemote()); 424 425 uint32_t save_id = 0; 426 if (gdb_comm.SaveRegisterState(thread->GetProtocolID(), save_id)) { 427 reg_checkpoint.SetID(save_id); 428 reg_checkpoint.GetData().reset(); 429 return true; 430 } else { 431 reg_checkpoint.SetID(0); // Invalid save ID is zero 432 return ReadAllRegisterValues(reg_checkpoint.GetData()); 433 } 434 } 435 436 bool GDBRemoteRegisterContext::WriteAllRegisterValues( 437 const RegisterCheckpoint ®_checkpoint) { 438 uint32_t save_id = reg_checkpoint.GetID(); 439 if (save_id != 0) { 440 ExecutionContext exe_ctx(CalculateThread()); 441 442 Process *process = exe_ctx.GetProcessPtr(); 443 Thread *thread = exe_ctx.GetThreadPtr(); 444 if (process == nullptr || thread == nullptr) 445 return false; 446 447 GDBRemoteCommunicationClient &gdb_comm( 448 ((ProcessGDBRemote *)process)->GetGDBRemote()); 449 450 return gdb_comm.RestoreRegisterState(m_thread.GetProtocolID(), save_id); 451 } else { 452 return WriteAllRegisterValues(reg_checkpoint.GetData()); 453 } 454 } 455 456 bool GDBRemoteRegisterContext::ReadAllRegisterValues( 457 lldb::DataBufferSP &data_sp) { 458 ExecutionContext exe_ctx(CalculateThread()); 459 460 Process *process = exe_ctx.GetProcessPtr(); 461 Thread *thread = exe_ctx.GetThreadPtr(); 462 if (process == nullptr || thread == nullptr) 463 return false; 464 465 GDBRemoteCommunicationClient &gdb_comm( 466 ((ProcessGDBRemote *)process)->GetGDBRemote()); 467 468 const bool use_g_packet = 469 !gdb_comm.AvoidGPackets((ProcessGDBRemote *)process); 470 471 GDBRemoteClientBase::Lock lock(gdb_comm, false); 472 if (lock) { 473 if (gdb_comm.SyncThreadState(m_thread.GetProtocolID())) 474 InvalidateAllRegisters(); 475 476 if (use_g_packet && 477 (data_sp = gdb_comm.ReadAllRegisters(m_thread.GetProtocolID()))) 478 return true; 479 480 // We're going to read each register 481 // individually and store them as binary data in a buffer. 482 const RegisterInfo *reg_info; 483 484 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != nullptr; 485 i++) { 486 if (reg_info 487 ->value_regs) // skip registers that are slices of real registers 488 continue; 489 ReadRegisterBytes(reg_info, m_reg_data); 490 // ReadRegisterBytes saves the contents of the register in to the 491 // m_reg_data buffer 492 } 493 data_sp = std::make_shared<DataBufferHeap>( 494 m_reg_data.GetDataStart(), m_reg_info.GetRegisterDataByteSize()); 495 return true; 496 } else { 497 498 Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 499 GDBR_LOG_PACKETS)); 500 if (log) { 501 if (log->GetVerbose()) { 502 StreamString strm; 503 gdb_comm.DumpHistory(strm); 504 LLDB_LOGF(log, 505 "error: failed to get packet sequence mutex, not sending " 506 "read all registers:\n%s", 507 strm.GetData()); 508 } else 509 LLDB_LOGF(log, 510 "error: failed to get packet sequence mutex, not sending " 511 "read all registers"); 512 } 513 } 514 515 data_sp.reset(); 516 return false; 517 } 518 519 bool GDBRemoteRegisterContext::WriteAllRegisterValues( 520 const lldb::DataBufferSP &data_sp) { 521 if (!data_sp || data_sp->GetBytes() == nullptr || data_sp->GetByteSize() == 0) 522 return false; 523 524 ExecutionContext exe_ctx(CalculateThread()); 525 526 Process *process = exe_ctx.GetProcessPtr(); 527 Thread *thread = exe_ctx.GetThreadPtr(); 528 if (process == nullptr || thread == nullptr) 529 return false; 530 531 GDBRemoteCommunicationClient &gdb_comm( 532 ((ProcessGDBRemote *)process)->GetGDBRemote()); 533 534 const bool use_g_packet = 535 !gdb_comm.AvoidGPackets((ProcessGDBRemote *)process); 536 537 GDBRemoteClientBase::Lock lock(gdb_comm, false); 538 if (lock) { 539 // The data_sp contains the G response packet. 540 if (use_g_packet) { 541 if (gdb_comm.WriteAllRegisters( 542 m_thread.GetProtocolID(), 543 {data_sp->GetBytes(), size_t(data_sp->GetByteSize())})) 544 return true; 545 546 uint32_t num_restored = 0; 547 // We need to manually go through all of the registers and restore them 548 // manually 549 DataExtractor restore_data(data_sp, m_reg_data.GetByteOrder(), 550 m_reg_data.GetAddressByteSize()); 551 552 const RegisterInfo *reg_info; 553 554 // The g packet contents may either include the slice registers 555 // (registers defined in terms of other registers, e.g. eax is a subset 556 // of rax) or not. The slice registers should NOT be in the g packet, 557 // but some implementations may incorrectly include them. 558 // 559 // If the slice registers are included in the packet, we must step over 560 // the slice registers when parsing the packet -- relying on the 561 // RegisterInfo byte_offset field would be incorrect. If the slice 562 // registers are not included, then using the byte_offset values into the 563 // data buffer is the best way to find individual register values. 564 565 uint64_t size_including_slice_registers = 0; 566 uint64_t size_not_including_slice_registers = 0; 567 uint64_t size_by_highest_offset = 0; 568 569 for (uint32_t reg_idx = 0; 570 (reg_info = GetRegisterInfoAtIndex(reg_idx)) != nullptr; ++reg_idx) { 571 size_including_slice_registers += reg_info->byte_size; 572 if (reg_info->value_regs == nullptr) 573 size_not_including_slice_registers += reg_info->byte_size; 574 if (reg_info->byte_offset >= size_by_highest_offset) 575 size_by_highest_offset = reg_info->byte_offset + reg_info->byte_size; 576 } 577 578 bool use_byte_offset_into_buffer; 579 if (size_by_highest_offset == restore_data.GetByteSize()) { 580 // The size of the packet agrees with the highest offset: + size in the 581 // register file 582 use_byte_offset_into_buffer = true; 583 } else if (size_not_including_slice_registers == 584 restore_data.GetByteSize()) { 585 // The size of the packet is the same as concatenating all of the 586 // registers sequentially, skipping the slice registers 587 use_byte_offset_into_buffer = true; 588 } else if (size_including_slice_registers == restore_data.GetByteSize()) { 589 // The slice registers are present in the packet (when they shouldn't 590 // be). Don't try to use the RegisterInfo byte_offset into the 591 // restore_data, it will point to the wrong place. 592 use_byte_offset_into_buffer = false; 593 } else { 594 // None of our expected sizes match the actual g packet data we're 595 // looking at. The most conservative approach here is to use the 596 // running total byte offset. 597 use_byte_offset_into_buffer = false; 598 } 599 600 // In case our register definitions don't include the correct offsets, 601 // keep track of the size of each reg & compute offset based on that. 602 uint32_t running_byte_offset = 0; 603 for (uint32_t reg_idx = 0; 604 (reg_info = GetRegisterInfoAtIndex(reg_idx)) != nullptr; 605 ++reg_idx, running_byte_offset += reg_info->byte_size) { 606 // Skip composite aka slice registers (e.g. eax is a slice of rax). 607 if (reg_info->value_regs) 608 continue; 609 610 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 611 612 uint32_t register_offset; 613 if (use_byte_offset_into_buffer) { 614 register_offset = reg_info->byte_offset; 615 } else { 616 register_offset = running_byte_offset; 617 } 618 619 const uint32_t reg_byte_size = reg_info->byte_size; 620 621 const uint8_t *restore_src = 622 restore_data.PeekData(register_offset, reg_byte_size); 623 if (restore_src) { 624 SetRegisterIsValid(reg, false); 625 if (gdb_comm.WriteRegister( 626 m_thread.GetProtocolID(), 627 reg_info->kinds[eRegisterKindProcessPlugin], 628 {restore_src, reg_byte_size})) 629 ++num_restored; 630 } 631 } 632 return num_restored > 0; 633 } else { 634 // For the use_g_packet == false case, we're going to write each register 635 // individually. The data buffer is binary data in this case, instead of 636 // ascii characters. 637 638 bool arm64_debugserver = false; 639 if (m_thread.GetProcess().get()) { 640 const ArchSpec &arch = 641 m_thread.GetProcess()->GetTarget().GetArchitecture(); 642 if (arch.IsValid() && 643 (arch.GetMachine() == llvm::Triple::aarch64 || 644 arch.GetMachine() == llvm::Triple::aarch64_32) && 645 arch.GetTriple().getVendor() == llvm::Triple::Apple && 646 arch.GetTriple().getOS() == llvm::Triple::IOS) { 647 arm64_debugserver = true; 648 } 649 } 650 uint32_t num_restored = 0; 651 const RegisterInfo *reg_info; 652 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != nullptr; 653 i++) { 654 if (reg_info->value_regs) // skip registers that are slices of real 655 // registers 656 continue; 657 // Skip the fpsr and fpcr floating point status/control register 658 // writing to work around a bug in an older version of debugserver that 659 // would lead to register context corruption when writing fpsr/fpcr. 660 if (arm64_debugserver && (strcmp(reg_info->name, "fpsr") == 0 || 661 strcmp(reg_info->name, "fpcr") == 0)) { 662 continue; 663 } 664 665 SetRegisterIsValid(reg_info, false); 666 if (gdb_comm.WriteRegister(m_thread.GetProtocolID(), 667 reg_info->kinds[eRegisterKindProcessPlugin], 668 {data_sp->GetBytes() + reg_info->byte_offset, 669 reg_info->byte_size})) 670 ++num_restored; 671 } 672 return num_restored > 0; 673 } 674 } else { 675 Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 676 GDBR_LOG_PACKETS)); 677 if (log) { 678 if (log->GetVerbose()) { 679 StreamString strm; 680 gdb_comm.DumpHistory(strm); 681 LLDB_LOGF(log, 682 "error: failed to get packet sequence mutex, not sending " 683 "write all registers:\n%s", 684 strm.GetData()); 685 } else 686 LLDB_LOGF(log, 687 "error: failed to get packet sequence mutex, not sending " 688 "write all registers"); 689 } 690 } 691 return false; 692 } 693 694 uint32_t GDBRemoteRegisterContext::ConvertRegisterKindToRegisterNumber( 695 lldb::RegisterKind kind, uint32_t num) { 696 return m_reg_info.ConvertRegisterKindToRegisterNumber(kind, num); 697 } 698 699 void GDBRemoteDynamicRegisterInfo::HardcodeARMRegisters(bool from_scratch) { 700 // For Advanced SIMD and VFP register mapping. 701 static uint32_t g_d0_regs[] = {26, 27, LLDB_INVALID_REGNUM}; // (s0, s1) 702 static uint32_t g_d1_regs[] = {28, 29, LLDB_INVALID_REGNUM}; // (s2, s3) 703 static uint32_t g_d2_regs[] = {30, 31, LLDB_INVALID_REGNUM}; // (s4, s5) 704 static uint32_t g_d3_regs[] = {32, 33, LLDB_INVALID_REGNUM}; // (s6, s7) 705 static uint32_t g_d4_regs[] = {34, 35, LLDB_INVALID_REGNUM}; // (s8, s9) 706 static uint32_t g_d5_regs[] = {36, 37, LLDB_INVALID_REGNUM}; // (s10, s11) 707 static uint32_t g_d6_regs[] = {38, 39, LLDB_INVALID_REGNUM}; // (s12, s13) 708 static uint32_t g_d7_regs[] = {40, 41, LLDB_INVALID_REGNUM}; // (s14, s15) 709 static uint32_t g_d8_regs[] = {42, 43, LLDB_INVALID_REGNUM}; // (s16, s17) 710 static uint32_t g_d9_regs[] = {44, 45, LLDB_INVALID_REGNUM}; // (s18, s19) 711 static uint32_t g_d10_regs[] = {46, 47, LLDB_INVALID_REGNUM}; // (s20, s21) 712 static uint32_t g_d11_regs[] = {48, 49, LLDB_INVALID_REGNUM}; // (s22, s23) 713 static uint32_t g_d12_regs[] = {50, 51, LLDB_INVALID_REGNUM}; // (s24, s25) 714 static uint32_t g_d13_regs[] = {52, 53, LLDB_INVALID_REGNUM}; // (s26, s27) 715 static uint32_t g_d14_regs[] = {54, 55, LLDB_INVALID_REGNUM}; // (s28, s29) 716 static uint32_t g_d15_regs[] = {56, 57, LLDB_INVALID_REGNUM}; // (s30, s31) 717 static uint32_t g_q0_regs[] = { 718 26, 27, 28, 29, LLDB_INVALID_REGNUM}; // (d0, d1) -> (s0, s1, s2, s3) 719 static uint32_t g_q1_regs[] = { 720 30, 31, 32, 33, LLDB_INVALID_REGNUM}; // (d2, d3) -> (s4, s5, s6, s7) 721 static uint32_t g_q2_regs[] = { 722 34, 35, 36, 37, LLDB_INVALID_REGNUM}; // (d4, d5) -> (s8, s9, s10, s11) 723 static uint32_t g_q3_regs[] = { 724 38, 39, 40, 41, LLDB_INVALID_REGNUM}; // (d6, d7) -> (s12, s13, s14, s15) 725 static uint32_t g_q4_regs[] = { 726 42, 43, 44, 45, LLDB_INVALID_REGNUM}; // (d8, d9) -> (s16, s17, s18, s19) 727 static uint32_t g_q5_regs[] = { 728 46, 47, 48, 49, 729 LLDB_INVALID_REGNUM}; // (d10, d11) -> (s20, s21, s22, s23) 730 static uint32_t g_q6_regs[] = { 731 50, 51, 52, 53, 732 LLDB_INVALID_REGNUM}; // (d12, d13) -> (s24, s25, s26, s27) 733 static uint32_t g_q7_regs[] = { 734 54, 55, 56, 57, 735 LLDB_INVALID_REGNUM}; // (d14, d15) -> (s28, s29, s30, s31) 736 static uint32_t g_q8_regs[] = {59, 60, LLDB_INVALID_REGNUM}; // (d16, d17) 737 static uint32_t g_q9_regs[] = {61, 62, LLDB_INVALID_REGNUM}; // (d18, d19) 738 static uint32_t g_q10_regs[] = {63, 64, LLDB_INVALID_REGNUM}; // (d20, d21) 739 static uint32_t g_q11_regs[] = {65, 66, LLDB_INVALID_REGNUM}; // (d22, d23) 740 static uint32_t g_q12_regs[] = {67, 68, LLDB_INVALID_REGNUM}; // (d24, d25) 741 static uint32_t g_q13_regs[] = {69, 70, LLDB_INVALID_REGNUM}; // (d26, d27) 742 static uint32_t g_q14_regs[] = {71, 72, LLDB_INVALID_REGNUM}; // (d28, d29) 743 static uint32_t g_q15_regs[] = {73, 74, LLDB_INVALID_REGNUM}; // (d30, d31) 744 745 // This is our array of composite registers, with each element coming from 746 // the above register mappings. 747 static uint32_t *g_composites[] = { 748 g_d0_regs, g_d1_regs, g_d2_regs, g_d3_regs, g_d4_regs, g_d5_regs, 749 g_d6_regs, g_d7_regs, g_d8_regs, g_d9_regs, g_d10_regs, g_d11_regs, 750 g_d12_regs, g_d13_regs, g_d14_regs, g_d15_regs, g_q0_regs, g_q1_regs, 751 g_q2_regs, g_q3_regs, g_q4_regs, g_q5_regs, g_q6_regs, g_q7_regs, 752 g_q8_regs, g_q9_regs, g_q10_regs, g_q11_regs, g_q12_regs, g_q13_regs, 753 g_q14_regs, g_q15_regs}; 754 755 // clang-format off 756 static RegisterInfo g_register_infos[] = { 757 // NAME ALT SZ OFF ENCODING FORMAT EH_FRAME DWARF GENERIC PROCESS PLUGIN LLDB VALUE REGS INVALIDATE REGS SIZE EXPR SIZE LEN 758 // ====== ====== === === ============= ========== =================== =================== ====================== ============= ==== ========== =============== ========= ======== 759 { "r0", "arg1", 4, 0, eEncodingUint, eFormatHex, { ehframe_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1,0, 0 }, nullptr, nullptr, nullptr, 0 }, 760 { "r1", "arg2", 4, 0, eEncodingUint, eFormatHex, { ehframe_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2,1, 1 }, nullptr, nullptr, nullptr, 0 }, 761 { "r2", "arg3", 4, 0, eEncodingUint, eFormatHex, { ehframe_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3,2, 2 }, nullptr, nullptr, nullptr, 0 }, 762 { "r3", "arg4", 4, 0, eEncodingUint, eFormatHex, { ehframe_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4,3, 3 }, nullptr, nullptr, nullptr, 0 }, 763 { "r4", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r4, dwarf_r4, LLDB_INVALID_REGNUM, 4, 4 }, nullptr, nullptr, nullptr, 0 }, 764 { "r5", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r5, dwarf_r5, LLDB_INVALID_REGNUM, 5, 5 }, nullptr, nullptr, nullptr, 0 }, 765 { "r6", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r6, dwarf_r6, LLDB_INVALID_REGNUM, 6, 6 }, nullptr, nullptr, nullptr, 0 }, 766 { "r7", "fp", 4, 0, eEncodingUint, eFormatHex, { ehframe_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, 7, 7 }, nullptr, nullptr, nullptr, 0 }, 767 { "r8", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r8, dwarf_r8, LLDB_INVALID_REGNUM, 8, 8 }, nullptr, nullptr, nullptr, 0 }, 768 { "r9", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r9, dwarf_r9, LLDB_INVALID_REGNUM, 9, 9 }, nullptr, nullptr, nullptr, 0 }, 769 { "r10", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r10, dwarf_r10, LLDB_INVALID_REGNUM, 10, 10 }, nullptr, nullptr, nullptr, 0 }, 770 { "r11", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r11, dwarf_r11, LLDB_INVALID_REGNUM, 11, 11 }, nullptr, nullptr, nullptr, 0 }, 771 { "r12", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r12, dwarf_r12, LLDB_INVALID_REGNUM, 12, 12 }, nullptr, nullptr, nullptr, 0 }, 772 { "sp", "r13", 4, 0, eEncodingUint, eFormatHex, { ehframe_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, 13, 13 }, nullptr, nullptr, nullptr, 0 }, 773 { "lr", "r14", 4, 0, eEncodingUint, eFormatHex, { ehframe_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, 14, 14 }, nullptr, nullptr, nullptr, 0 }, 774 { "pc", "r15", 4, 0, eEncodingUint, eFormatHex, { ehframe_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, 15, 15 }, nullptr, nullptr, nullptr, 0 }, 775 { "f0", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 16, 16 }, nullptr, nullptr, nullptr, 0 }, 776 { "f1", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 17, 17 }, nullptr, nullptr, nullptr, 0 }, 777 { "f2", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 18, 18 }, nullptr, nullptr, nullptr, 0 }, 778 { "f3", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 19, 19 }, nullptr, nullptr, nullptr, 0 }, 779 { "f4", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 20, 20 }, nullptr, nullptr, nullptr, 0 }, 780 { "f5", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 21, 21 }, nullptr, nullptr, nullptr, 0 }, 781 { "f6", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 22, 22 }, nullptr, nullptr, nullptr, 0 }, 782 { "f7", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 23, 23 }, nullptr, nullptr, nullptr, 0 }, 783 { "fps", nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 24, 24 }, nullptr, nullptr, nullptr, 0 }, 784 { "cpsr","flags", 4, 0, eEncodingUint, eFormatHex, { ehframe_cpsr, dwarf_cpsr, LLDB_INVALID_REGNUM, 25, 25 }, nullptr, nullptr, nullptr, 0 }, 785 { "s0", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, 26, 26 }, nullptr, nullptr, nullptr, 0 }, 786 { "s1", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, 27, 27 }, nullptr, nullptr, nullptr, 0 }, 787 { "s2", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, 28, 28 }, nullptr, nullptr, nullptr, 0 }, 788 { "s3", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, 29, 29 }, nullptr, nullptr, nullptr, 0 }, 789 { "s4", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, 30, 30 }, nullptr, nullptr, nullptr, 0 }, 790 { "s5", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, 31, 31 }, nullptr, nullptr, nullptr, 0 }, 791 { "s6", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, 32, 32 }, nullptr, nullptr, nullptr, 0 }, 792 { "s7", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, 33, 33 }, nullptr, nullptr, nullptr, 0 }, 793 { "s8", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, 34, 34 }, nullptr, nullptr, nullptr, 0 }, 794 { "s9", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, 35, 35 }, nullptr, nullptr, nullptr, 0 }, 795 { "s10", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, 36, 36 }, nullptr, nullptr, nullptr, 0 }, 796 { "s11", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, 37, 37 }, nullptr, nullptr, nullptr, 0 }, 797 { "s12", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, 38, 38 }, nullptr, nullptr, nullptr, 0 }, 798 { "s13", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, 39, 39 }, nullptr, nullptr, nullptr, 0 }, 799 { "s14", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, 40, 40 }, nullptr, nullptr, nullptr, 0 }, 800 { "s15", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, 41, 41 }, nullptr, nullptr, nullptr, 0 }, 801 { "s16", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, 42, 42 }, nullptr, nullptr, nullptr, 0 }, 802 { "s17", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, 43, 43 }, nullptr, nullptr, nullptr, 0 }, 803 { "s18", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, 44, 44 }, nullptr, nullptr, nullptr, 0 }, 804 { "s19", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, 45, 45 }, nullptr, nullptr, nullptr, 0 }, 805 { "s20", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, 46, 46 }, nullptr, nullptr, nullptr, 0 }, 806 { "s21", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, 47, 47 }, nullptr, nullptr, nullptr, 0 }, 807 { "s22", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, 48, 48 }, nullptr, nullptr, nullptr, 0 }, 808 { "s23", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, 49, 49 }, nullptr, nullptr, nullptr, 0 }, 809 { "s24", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, 50, 50 }, nullptr, nullptr, nullptr, 0 }, 810 { "s25", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, 51, 51 }, nullptr, nullptr, nullptr, 0 }, 811 { "s26", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, 52, 52 }, nullptr, nullptr, nullptr, 0 }, 812 { "s27", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, 53, 53 }, nullptr, nullptr, nullptr, 0 }, 813 { "s28", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, 54, 54 }, nullptr, nullptr, nullptr, 0 }, 814 { "s29", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, 55, 55 }, nullptr, nullptr, nullptr, 0 }, 815 { "s30", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, 56, 56 }, nullptr, nullptr, nullptr, 0 }, 816 { "s31", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, 57, 57 }, nullptr, nullptr, nullptr, 0 }, 817 { "fpscr",nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 58, 58 }, nullptr, nullptr, nullptr, 0 }, 818 { "d16", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, 59, 59 }, nullptr, nullptr, nullptr, 0 }, 819 { "d17", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, 60, 60 }, nullptr, nullptr, nullptr, 0 }, 820 { "d18", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, 61, 61 }, nullptr, nullptr, nullptr, 0 }, 821 { "d19", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, 62, 62 }, nullptr, nullptr, nullptr, 0 }, 822 { "d20", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, 63, 63 }, nullptr, nullptr, nullptr, 0 }, 823 { "d21", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, 64, 64 }, nullptr, nullptr, nullptr, 0 }, 824 { "d22", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, 65, 65 }, nullptr, nullptr, nullptr, 0 }, 825 { "d23", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, 66, 66 }, nullptr, nullptr, nullptr, 0 }, 826 { "d24", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, 67, 67 }, nullptr, nullptr, nullptr, 0 }, 827 { "d25", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, 68, 68 }, nullptr, nullptr, nullptr, 0 }, 828 { "d26", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, 69, 69 }, nullptr, nullptr, nullptr, 0 }, 829 { "d27", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, 70, 70 }, nullptr, nullptr, nullptr, 0 }, 830 { "d28", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, 71, 71 }, nullptr, nullptr, nullptr, 0 }, 831 { "d29", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, 72, 72 }, nullptr, nullptr, nullptr, 0 }, 832 { "d30", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, 73, 73 }, nullptr, nullptr, nullptr, 0 }, 833 { "d31", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, 74, 74 }, nullptr, nullptr, nullptr, 0 }, 834 { "d0", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, 75, 75 }, g_d0_regs, nullptr, nullptr, 0 }, 835 { "d1", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, 76, 76 }, g_d1_regs, nullptr, nullptr, 0 }, 836 { "d2", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, 77, 77 }, g_d2_regs, nullptr, nullptr, 0 }, 837 { "d3", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, 78, 78 }, g_d3_regs, nullptr, nullptr, 0 }, 838 { "d4", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, 79, 79 }, g_d4_regs, nullptr, nullptr, 0 }, 839 { "d5", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, 80, 80 }, g_d5_regs, nullptr, nullptr, 0 }, 840 { "d6", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, 81, 81 }, g_d6_regs, nullptr, nullptr, 0 }, 841 { "d7", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, 82, 82 }, g_d7_regs, nullptr, nullptr, 0 }, 842 { "d8", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, 83, 83 }, g_d8_regs, nullptr, nullptr, 0 }, 843 { "d9", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, 84, 84 }, g_d9_regs, nullptr, nullptr, 0 }, 844 { "d10", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, 85, 85 }, g_d10_regs, nullptr, nullptr, 0 }, 845 { "d11", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, 86, 86 }, g_d11_regs, nullptr, nullptr, 0 }, 846 { "d12", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, 87, 87 }, g_d12_regs, nullptr, nullptr, 0 }, 847 { "d13", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, 88, 88 }, g_d13_regs, nullptr, nullptr, 0 }, 848 { "d14", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, 89, 89 }, g_d14_regs, nullptr, nullptr, 0 }, 849 { "d15", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, 90, 90 }, g_d15_regs, nullptr, nullptr, 0 }, 850 { "q0", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q0, LLDB_INVALID_REGNUM, 91, 91 }, g_q0_regs, nullptr, nullptr, 0 }, 851 { "q1", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q1, LLDB_INVALID_REGNUM, 92, 92 }, g_q1_regs, nullptr, nullptr, 0 }, 852 { "q2", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q2, LLDB_INVALID_REGNUM, 93, 93 }, g_q2_regs, nullptr, nullptr, 0 }, 853 { "q3", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q3, LLDB_INVALID_REGNUM, 94, 94 }, g_q3_regs, nullptr, nullptr, 0 }, 854 { "q4", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q4, LLDB_INVALID_REGNUM, 95, 95 }, g_q4_regs, nullptr, nullptr, 0 }, 855 { "q5", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q5, LLDB_INVALID_REGNUM, 96, 96 }, g_q5_regs, nullptr, nullptr, 0 }, 856 { "q6", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q6, LLDB_INVALID_REGNUM, 97, 97 }, g_q6_regs, nullptr, nullptr, 0 }, 857 { "q7", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q7, LLDB_INVALID_REGNUM, 98, 98 }, g_q7_regs, nullptr, nullptr, 0 }, 858 { "q8", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q8, LLDB_INVALID_REGNUM, 99, 99 }, g_q8_regs, nullptr, nullptr, 0 }, 859 { "q9", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q9, LLDB_INVALID_REGNUM, 100, 100 }, g_q9_regs, nullptr, nullptr, 0 }, 860 { "q10", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q10, LLDB_INVALID_REGNUM, 101, 101 }, g_q10_regs, nullptr, nullptr, 0 }, 861 { "q11", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q11, LLDB_INVALID_REGNUM, 102, 102 }, g_q11_regs, nullptr, nullptr, 0 }, 862 { "q12", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q12, LLDB_INVALID_REGNUM, 103, 103 }, g_q12_regs, nullptr, nullptr, 0 }, 863 { "q13", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q13, LLDB_INVALID_REGNUM, 104, 104 }, g_q13_regs, nullptr, nullptr, 0 }, 864 { "q14", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q14, LLDB_INVALID_REGNUM, 105, 105 }, g_q14_regs, nullptr, nullptr, 0 }, 865 { "q15", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q15, LLDB_INVALID_REGNUM, 106, 106 }, g_q15_regs, nullptr, nullptr, 0 } 866 }; 867 // clang-format on 868 869 static const uint32_t num_registers = llvm::array_lengthof(g_register_infos); 870 static ConstString gpr_reg_set("General Purpose Registers"); 871 static ConstString sfp_reg_set("Software Floating Point Registers"); 872 static ConstString vfp_reg_set("Floating Point Registers"); 873 size_t i; 874 if (from_scratch) { 875 // Calculate the offsets of the registers 876 // Note that the layout of the "composite" registers (d0-d15 and q0-q15) 877 // which comes after the "primordial" registers is important. This enables 878 // us to calculate the offset of the composite register by using the offset 879 // of its first primordial register. For example, to calculate the offset 880 // of q0, use s0's offset. 881 if (g_register_infos[2].byte_offset == 0) { 882 uint32_t byte_offset = 0; 883 for (i = 0; i < num_registers; ++i) { 884 // For primordial registers, increment the byte_offset by the byte_size 885 // to arrive at the byte_offset for the next register. Otherwise, we 886 // have a composite register whose offset can be calculated by 887 // consulting the offset of its first primordial register. 888 if (!g_register_infos[i].value_regs) { 889 g_register_infos[i].byte_offset = byte_offset; 890 byte_offset += g_register_infos[i].byte_size; 891 } else { 892 const uint32_t first_primordial_reg = 893 g_register_infos[i].value_regs[0]; 894 g_register_infos[i].byte_offset = 895 g_register_infos[first_primordial_reg].byte_offset; 896 } 897 } 898 } 899 for (i = 0; i < num_registers; ++i) { 900 ConstString name; 901 ConstString alt_name; 902 if (g_register_infos[i].name && g_register_infos[i].name[0]) 903 name.SetCString(g_register_infos[i].name); 904 if (g_register_infos[i].alt_name && g_register_infos[i].alt_name[0]) 905 alt_name.SetCString(g_register_infos[i].alt_name); 906 907 if (i <= 15 || i == 25) 908 AddRegister(g_register_infos[i], name, alt_name, gpr_reg_set); 909 else if (i <= 24) 910 AddRegister(g_register_infos[i], name, alt_name, sfp_reg_set); 911 else 912 AddRegister(g_register_infos[i], name, alt_name, vfp_reg_set); 913 } 914 } else { 915 // Add composite registers to our primordial registers, then. 916 const size_t num_composites = llvm::array_lengthof(g_composites); 917 const size_t num_dynamic_regs = GetNumRegisters(); 918 const size_t num_common_regs = num_registers - num_composites; 919 RegisterInfo *g_comp_register_infos = g_register_infos + num_common_regs; 920 921 // First we need to validate that all registers that we already have match 922 // the non composite regs. If so, then we can add the registers, else we 923 // need to bail 924 bool match = true; 925 if (num_dynamic_regs == num_common_regs) { 926 for (i = 0; match && i < num_dynamic_regs; ++i) { 927 // Make sure all register names match 928 if (m_regs[i].name && g_register_infos[i].name) { 929 if (strcmp(m_regs[i].name, g_register_infos[i].name)) { 930 match = false; 931 break; 932 } 933 } 934 935 // Make sure all register byte sizes match 936 if (m_regs[i].byte_size != g_register_infos[i].byte_size) { 937 match = false; 938 break; 939 } 940 } 941 } else { 942 // Wrong number of registers. 943 match = false; 944 } 945 // If "match" is true, then we can add extra registers. 946 if (match) { 947 for (i = 0; i < num_composites; ++i) { 948 ConstString name; 949 ConstString alt_name; 950 const uint32_t first_primordial_reg = 951 g_comp_register_infos[i].value_regs[0]; 952 const char *reg_name = g_register_infos[first_primordial_reg].name; 953 if (reg_name && reg_name[0]) { 954 for (uint32_t j = 0; j < num_dynamic_regs; ++j) { 955 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(j); 956 // Find a matching primordial register info entry. 957 if (reg_info && reg_info->name && 958 ::strcasecmp(reg_info->name, reg_name) == 0) { 959 // The name matches the existing primordial entry. Find and 960 // assign the offset, and then add this composite register entry. 961 g_comp_register_infos[i].byte_offset = reg_info->byte_offset; 962 name.SetCString(g_comp_register_infos[i].name); 963 AddRegister(g_comp_register_infos[i], name, alt_name, 964 vfp_reg_set); 965 } 966 } 967 } 968 } 969 } 970 } 971 } 972