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