1 //===-- GDBRemoteRegisterContext.cpp ----------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "GDBRemoteRegisterContext.h" 11 12 // C Includes 13 // C++ Includes 14 // Other libraries and framework includes 15 #include "lldb/Core/DataBufferHeap.h" 16 #include "lldb/Core/DataExtractor.h" 17 #include "lldb/Core/RegisterValue.h" 18 #include "lldb/Core/Scalar.h" 19 #include "lldb/Core/StreamString.h" 20 #include "lldb/Target/ExecutionContext.h" 21 #include "lldb/Target/Target.h" 22 #include "lldb/Utility/Utils.h" 23 // Project includes 24 #include "Utility/StringExtractorGDBRemote.h" 25 #include "ProcessGDBRemote.h" 26 #include "ProcessGDBRemoteLog.h" 27 #include "ThreadGDBRemote.h" 28 #include "Utility/ARM_DWARF_Registers.h" 29 #include "Utility/ARM_ehframe_Registers.h" 30 31 using namespace lldb; 32 using namespace lldb_private; 33 using namespace lldb_private::process_gdb_remote; 34 35 //---------------------------------------------------------------------- 36 // GDBRemoteRegisterContext constructor 37 //---------------------------------------------------------------------- 38 GDBRemoteRegisterContext::GDBRemoteRegisterContext 39 ( 40 ThreadGDBRemote &thread, 41 uint32_t concrete_frame_idx, 42 GDBRemoteDynamicRegisterInfo ®_info, 43 bool read_all_at_once 44 ) : 45 RegisterContext (thread, concrete_frame_idx), 46 m_reg_info (reg_info), 47 m_reg_valid (), 48 m_reg_data (), 49 m_read_all_at_once (read_all_at_once) 50 { 51 // Resize our vector of bools to contain one bool for every register. 52 // We will use these boolean values to know when a register value 53 // is valid in m_reg_data. 54 m_reg_valid.resize (reg_info.GetNumRegisters()); 55 56 // Make a heap based buffer that is big enough to store all registers 57 DataBufferSP reg_data_sp(new DataBufferHeap (reg_info.GetRegisterDataByteSize(), 0)); 58 m_reg_data.SetData (reg_data_sp); 59 m_reg_data.SetByteOrder(thread.GetProcess()->GetByteOrder()); 60 } 61 62 //---------------------------------------------------------------------- 63 // Destructor 64 //---------------------------------------------------------------------- 65 GDBRemoteRegisterContext::~GDBRemoteRegisterContext() 66 { 67 } 68 69 void 70 GDBRemoteRegisterContext::InvalidateAllRegisters () 71 { 72 SetAllRegisterValid (false); 73 } 74 75 void 76 GDBRemoteRegisterContext::SetAllRegisterValid (bool b) 77 { 78 std::vector<bool>::iterator pos, end = m_reg_valid.end(); 79 for (pos = m_reg_valid.begin(); pos != end; ++pos) 80 *pos = b; 81 } 82 83 size_t 84 GDBRemoteRegisterContext::GetRegisterCount () 85 { 86 return m_reg_info.GetNumRegisters (); 87 } 88 89 const RegisterInfo * 90 GDBRemoteRegisterContext::GetRegisterInfoAtIndex (size_t reg) 91 { 92 RegisterInfo* reg_info = m_reg_info.GetRegisterInfoAtIndex (reg); 93 94 if (reg_info && reg_info->dynamic_size_dwarf_expr_bytes) 95 { 96 const ArchSpec &arch = m_thread.GetProcess ()->GetTarget ().GetArchitecture (); 97 uint8_t reg_size = UpdateDynamicRegisterSize (arch, reg_info); 98 reg_info->byte_size = reg_size; 99 } 100 return reg_info; 101 } 102 103 size_t 104 GDBRemoteRegisterContext::GetRegisterSetCount () 105 { 106 return m_reg_info.GetNumRegisterSets (); 107 } 108 109 110 111 const RegisterSet * 112 GDBRemoteRegisterContext::GetRegisterSet (size_t reg_set) 113 { 114 return m_reg_info.GetRegisterSet (reg_set); 115 } 116 117 118 119 bool 120 GDBRemoteRegisterContext::ReadRegister (const RegisterInfo *reg_info, RegisterValue &value) 121 { 122 // Read the register 123 if (ReadRegisterBytes (reg_info, m_reg_data)) 124 { 125 const bool partial_data_ok = false; 126 Error error (value.SetValueFromData(reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok)); 127 return error.Success(); 128 } 129 return false; 130 } 131 132 bool 133 GDBRemoteRegisterContext::PrivateSetRegisterValue (uint32_t reg, StringExtractor &response) 134 { 135 const RegisterInfo *reg_info = GetRegisterInfoAtIndex (reg); 136 if (reg_info == NULL) 137 return false; 138 139 // Invalidate if needed 140 InvalidateIfNeeded(false); 141 142 const uint32_t reg_byte_size = reg_info->byte_size; 143 const size_t bytes_copied = response.GetHexBytes (const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_byte_size)), reg_byte_size, '\xcc'); 144 bool success = bytes_copied == reg_byte_size; 145 if (success) 146 { 147 SetRegisterIsValid(reg, true); 148 } 149 else if (bytes_copied > 0) 150 { 151 // Only set register is valid to false if we copied some bytes, else 152 // leave it as it was. 153 SetRegisterIsValid(reg, false); 154 } 155 return success; 156 } 157 158 bool 159 GDBRemoteRegisterContext::PrivateSetRegisterValue (uint32_t reg, uint64_t new_reg_val) 160 { 161 const RegisterInfo *reg_info = GetRegisterInfoAtIndex (reg); 162 if (reg_info == NULL) 163 return false; 164 165 // Early in process startup, we can get a thread that has an invalid byte order 166 // because the process hasn't been completely set up yet (see the ctor where the 167 // byte order is setfrom the process). If that's the case, we can't set the 168 // value here. 169 if (m_reg_data.GetByteOrder() == eByteOrderInvalid) 170 { 171 return false; 172 } 173 174 // Invalidate if needed 175 InvalidateIfNeeded (false); 176 177 DataBufferSP buffer_sp (new DataBufferHeap (&new_reg_val, sizeof (new_reg_val))); 178 DataExtractor data (buffer_sp, endian::InlHostByteOrder(), sizeof (void*)); 179 180 // If our register context and our register info disagree, which should never happen, don't 181 // overwrite past the end of the buffer. 182 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 183 return false; 184 185 // Grab a pointer to where we are going to put this register 186 uint8_t *dst = const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 187 188 if (dst == NULL) 189 return false; 190 191 192 if (data.CopyByteOrderedData (0, // src offset 193 reg_info->byte_size, // src length 194 dst, // dst 195 reg_info->byte_size, // dst length 196 m_reg_data.GetByteOrder())) // dst byte order 197 { 198 SetRegisterIsValid (reg, true); 199 return true; 200 } 201 return false; 202 } 203 204 // Helper function for GDBRemoteRegisterContext::ReadRegisterBytes(). 205 bool 206 GDBRemoteRegisterContext::GetPrimordialRegister(const RegisterInfo *reg_info, 207 GDBRemoteCommunicationClient &gdb_comm) 208 { 209 const uint32_t lldb_reg = reg_info->kinds[eRegisterKindLLDB]; 210 const uint32_t remote_reg = reg_info->kinds[eRegisterKindProcessPlugin]; 211 StringExtractorGDBRemote response; 212 if (gdb_comm.ReadRegister(m_thread.GetProtocolID(), remote_reg, response)) 213 return PrivateSetRegisterValue (lldb_reg, response); 214 return false; 215 } 216 217 bool 218 GDBRemoteRegisterContext::ReadRegisterBytes (const RegisterInfo *reg_info, DataExtractor &data) 219 { 220 ExecutionContext exe_ctx (CalculateThread()); 221 222 Process *process = exe_ctx.GetProcessPtr(); 223 Thread *thread = exe_ctx.GetThreadPtr(); 224 if (process == NULL || thread == NULL) 225 return false; 226 227 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 228 229 InvalidateIfNeeded(false); 230 231 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 232 233 if (!GetRegisterIsValid(reg)) 234 { 235 if (m_read_all_at_once) 236 { 237 StringExtractorGDBRemote response; 238 if (!gdb_comm.ReadAllRegisters(m_thread.GetProtocolID(), response)) 239 return false; 240 if (response.IsNormalResponse()) 241 if (response.GetHexBytes(const_cast<void *>(reinterpret_cast<const void *>(m_reg_data.GetDataStart())), 242 m_reg_data.GetByteSize(), '\xcc') == m_reg_data.GetByteSize()) 243 SetAllRegisterValid (true); 244 } 245 else if (reg_info->value_regs) 246 { 247 // Process this composite register request by delegating to the constituent 248 // primordial registers. 249 250 // Index of the primordial register. 251 bool success = true; 252 for (uint32_t idx = 0; success; ++idx) 253 { 254 const uint32_t prim_reg = reg_info->value_regs[idx]; 255 if (prim_reg == LLDB_INVALID_REGNUM) 256 break; 257 // We have a valid primordial register as our constituent. 258 // Grab the corresponding register info. 259 const RegisterInfo *prim_reg_info = GetRegisterInfoAtIndex(prim_reg); 260 if (prim_reg_info == NULL) 261 success = false; 262 else 263 { 264 // Read the containing register if it hasn't already been read 265 if (!GetRegisterIsValid(prim_reg)) 266 success = GetPrimordialRegister(prim_reg_info, gdb_comm); 267 } 268 } 269 270 if (success) 271 { 272 // If we reach this point, all primordial register requests have succeeded. 273 // Validate this composite register. 274 SetRegisterIsValid (reg_info, true); 275 } 276 } 277 else 278 { 279 // Get each register individually 280 GetPrimordialRegister(reg_info, gdb_comm); 281 } 282 283 // Make sure we got a valid register value after reading it 284 if (!GetRegisterIsValid(reg)) 285 return false; 286 } 287 288 if (&data != &m_reg_data) 289 { 290 #if defined (LLDB_CONFIGURATION_DEBUG) 291 assert (m_reg_data.GetByteSize() >= reg_info->byte_offset + reg_info->byte_size); 292 #endif 293 // If our register context and our register info disagree, which should never happen, don't 294 // read past the end of the buffer. 295 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 296 return false; 297 298 // If we aren't extracting into our own buffer (which 299 // only happens when this function is called from 300 // ReadRegisterValue(uint32_t, Scalar&)) then 301 // we transfer bytes from our buffer into the data 302 // buffer that was passed in 303 304 data.SetByteOrder (m_reg_data.GetByteOrder()); 305 data.SetData (m_reg_data, reg_info->byte_offset, reg_info->byte_size); 306 } 307 return true; 308 } 309 310 bool 311 GDBRemoteRegisterContext::WriteRegister (const RegisterInfo *reg_info, 312 const RegisterValue &value) 313 { 314 DataExtractor data; 315 if (value.GetData (data)) 316 return WriteRegisterBytes (reg_info, data, 0); 317 return false; 318 } 319 320 // Helper function for GDBRemoteRegisterContext::WriteRegisterBytes(). 321 bool 322 GDBRemoteRegisterContext::SetPrimordialRegister(const RegisterInfo *reg_info, 323 GDBRemoteCommunicationClient &gdb_comm) 324 { 325 StreamString packet; 326 StringExtractorGDBRemote response; 327 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 328 packet.Printf ("P%x=", reg_info->kinds[eRegisterKindProcessPlugin]); 329 packet.PutBytesAsRawHex8 (m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size), 330 reg_info->byte_size, 331 endian::InlHostByteOrder(), 332 endian::InlHostByteOrder()); 333 334 if (gdb_comm.GetThreadSuffixSupported()) 335 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 336 337 // Invalidate just this register 338 SetRegisterIsValid(reg, false); 339 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 340 packet.GetString().size(), 341 response, 342 false) == GDBRemoteCommunication::PacketResult::Success) 343 { 344 if (response.IsOKResponse()) 345 return true; 346 } 347 return false; 348 } 349 350 void 351 GDBRemoteRegisterContext::SyncThreadState(Process *process) 352 { 353 // NB. We assume our caller has locked the sequence mutex. 354 355 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *) process)->GetGDBRemote()); 356 if (!gdb_comm.GetSyncThreadStateSupported()) 357 return; 358 359 StreamString packet; 360 StringExtractorGDBRemote response; 361 packet.Printf ("QSyncThreadState:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 362 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 363 packet.GetString().size(), 364 response, 365 false) == GDBRemoteCommunication::PacketResult::Success) 366 { 367 if (response.IsOKResponse()) 368 InvalidateAllRegisters(); 369 } 370 } 371 372 bool 373 GDBRemoteRegisterContext::WriteRegisterBytes (const RegisterInfo *reg_info, DataExtractor &data, uint32_t data_offset) 374 { 375 ExecutionContext exe_ctx (CalculateThread()); 376 377 Process *process = exe_ctx.GetProcessPtr(); 378 Thread *thread = exe_ctx.GetThreadPtr(); 379 if (process == NULL || thread == NULL) 380 return false; 381 382 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 383 // FIXME: This check isn't right because IsRunning checks the Public state, but this 384 // is work you need to do - for instance in ShouldStop & friends - before the public 385 // state has been changed. 386 // if (gdb_comm.IsRunning()) 387 // return false; 388 389 390 #if defined (LLDB_CONFIGURATION_DEBUG) 391 assert (m_reg_data.GetByteSize() >= reg_info->byte_offset + reg_info->byte_size); 392 #endif 393 394 // If our register context and our register info disagree, which should never happen, don't 395 // overwrite past the end of the buffer. 396 if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 397 return false; 398 399 // Grab a pointer to where we are going to put this register 400 uint8_t *dst = const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 401 402 if (dst == NULL) 403 return false; 404 405 406 if (data.CopyByteOrderedData (data_offset, // src offset 407 reg_info->byte_size, // src length 408 dst, // dst 409 reg_info->byte_size, // dst length 410 m_reg_data.GetByteOrder())) // dst byte order 411 { 412 std::unique_lock<std::recursive_mutex> lock; 413 if (gdb_comm.GetSequenceMutex(lock, "Didn't get sequence mutex for write register.")) 414 { 415 const bool thread_suffix_supported = gdb_comm.GetThreadSuffixSupported(); 416 ProcessSP process_sp (m_thread.GetProcess()); 417 if (thread_suffix_supported || static_cast<ProcessGDBRemote *>(process_sp.get())->GetGDBRemote().SetCurrentThread(m_thread.GetProtocolID())) 418 { 419 StreamString packet; 420 StringExtractorGDBRemote response; 421 422 if (m_read_all_at_once) 423 { 424 // Set all registers in one packet 425 packet.PutChar ('G'); 426 packet.PutBytesAsRawHex8 (m_reg_data.GetDataStart(), 427 m_reg_data.GetByteSize(), 428 endian::InlHostByteOrder(), 429 endian::InlHostByteOrder()); 430 431 if (thread_suffix_supported) 432 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 433 434 // Invalidate all register values 435 InvalidateIfNeeded (true); 436 437 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 438 packet.GetString().size(), 439 response, 440 false) == GDBRemoteCommunication::PacketResult::Success) 441 { 442 SetAllRegisterValid (false); 443 if (response.IsOKResponse()) 444 { 445 return true; 446 } 447 } 448 } 449 else 450 { 451 bool success = true; 452 453 if (reg_info->value_regs) 454 { 455 // This register is part of another register. In this case we read the actual 456 // register data for any "value_regs", and once all that data is read, we will 457 // have enough data in our register context bytes for the value of this register 458 459 // Invalidate this composite register first. 460 461 for (uint32_t idx = 0; success; ++idx) 462 { 463 const uint32_t reg = reg_info->value_regs[idx]; 464 if (reg == LLDB_INVALID_REGNUM) 465 break; 466 // We have a valid primordial register as our constituent. 467 // Grab the corresponding register info. 468 const RegisterInfo *value_reg_info = GetRegisterInfoAtIndex(reg); 469 if (value_reg_info == NULL) 470 success = false; 471 else 472 success = SetPrimordialRegister(value_reg_info, gdb_comm); 473 } 474 } 475 else 476 { 477 // This is an actual register, write it 478 success = SetPrimordialRegister(reg_info, gdb_comm); 479 } 480 481 // Check if writing this register will invalidate any other register values? 482 // If so, invalidate them 483 if (reg_info->invalidate_regs) 484 { 485 for (uint32_t idx = 0, reg = reg_info->invalidate_regs[0]; 486 reg != LLDB_INVALID_REGNUM; 487 reg = reg_info->invalidate_regs[++idx]) 488 { 489 SetRegisterIsValid(reg, false); 490 } 491 } 492 493 return success; 494 } 495 } 496 } 497 else 498 { 499 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS)); 500 if (log) 501 { 502 if (log->GetVerbose()) 503 { 504 StreamString strm; 505 gdb_comm.DumpHistory(strm); 506 log->Printf("error: failed to get packet sequence mutex, not sending write register for \"%s\":\n%s", reg_info->name, strm.GetData()); 507 } 508 else 509 log->Printf("error: failed to get packet sequence mutex, not sending write register for \"%s\"", reg_info->name); 510 } 511 } 512 } 513 return false; 514 } 515 516 bool 517 GDBRemoteRegisterContext::ReadAllRegisterValues (RegisterCheckpoint ®_checkpoint) 518 { 519 ExecutionContext exe_ctx (CalculateThread()); 520 521 Process *process = exe_ctx.GetProcessPtr(); 522 Thread *thread = exe_ctx.GetThreadPtr(); 523 if (process == NULL || thread == NULL) 524 return false; 525 526 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 527 528 uint32_t save_id = 0; 529 if (gdb_comm.SaveRegisterState(thread->GetProtocolID(), save_id)) 530 { 531 reg_checkpoint.SetID(save_id); 532 reg_checkpoint.GetData().reset(); 533 return true; 534 } 535 else 536 { 537 reg_checkpoint.SetID(0); // Invalid save ID is zero 538 return ReadAllRegisterValues(reg_checkpoint.GetData()); 539 } 540 } 541 542 bool 543 GDBRemoteRegisterContext::WriteAllRegisterValues (const RegisterCheckpoint ®_checkpoint) 544 { 545 uint32_t save_id = reg_checkpoint.GetID(); 546 if (save_id != 0) 547 { 548 ExecutionContext exe_ctx (CalculateThread()); 549 550 Process *process = exe_ctx.GetProcessPtr(); 551 Thread *thread = exe_ctx.GetThreadPtr(); 552 if (process == NULL || thread == NULL) 553 return false; 554 555 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 556 557 return gdb_comm.RestoreRegisterState(m_thread.GetProtocolID(), save_id); 558 } 559 else 560 { 561 return WriteAllRegisterValues(reg_checkpoint.GetData()); 562 } 563 } 564 565 bool 566 GDBRemoteRegisterContext::ReadAllRegisterValues (lldb::DataBufferSP &data_sp) 567 { 568 ExecutionContext exe_ctx (CalculateThread()); 569 570 Process *process = exe_ctx.GetProcessPtr(); 571 Thread *thread = exe_ctx.GetThreadPtr(); 572 if (process == NULL || thread == NULL) 573 return false; 574 575 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 576 577 StringExtractorGDBRemote response; 578 579 const bool use_g_packet = gdb_comm.AvoidGPackets ((ProcessGDBRemote *)process) == false; 580 581 std::unique_lock<std::recursive_mutex> lock; 582 if (gdb_comm.GetSequenceMutex(lock, "Didn't get sequence mutex for read all registers.")) 583 { 584 SyncThreadState(process); 585 586 char packet[32]; 587 const bool thread_suffix_supported = gdb_comm.GetThreadSuffixSupported(); 588 ProcessSP process_sp (m_thread.GetProcess()); 589 if (thread_suffix_supported || static_cast<ProcessGDBRemote *>(process_sp.get())->GetGDBRemote().SetCurrentThread(m_thread.GetProtocolID())) 590 { 591 int packet_len = 0; 592 if (thread_suffix_supported) 593 packet_len = ::snprintf (packet, sizeof(packet), "g;thread:%4.4" PRIx64, m_thread.GetProtocolID()); 594 else 595 packet_len = ::snprintf (packet, sizeof(packet), "g"); 596 assert (packet_len < ((int)sizeof(packet) - 1)); 597 598 if (use_g_packet && gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false) == GDBRemoteCommunication::PacketResult::Success) 599 { 600 int packet_len = 0; 601 if (thread_suffix_supported) 602 packet_len = ::snprintf (packet, sizeof(packet), "g;thread:%4.4" PRIx64, m_thread.GetProtocolID()); 603 else 604 packet_len = ::snprintf (packet, sizeof(packet), "g"); 605 assert (packet_len < ((int)sizeof(packet) - 1)); 606 607 if (gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false) == GDBRemoteCommunication::PacketResult::Success) 608 { 609 if (response.IsErrorResponse()) 610 return false; 611 612 std::string &response_str = response.GetStringRef(); 613 if (isxdigit(response_str[0])) 614 { 615 response_str.insert(0, 1, 'G'); 616 if (thread_suffix_supported) 617 { 618 char thread_id_cstr[64]; 619 ::snprintf (thread_id_cstr, sizeof(thread_id_cstr), ";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 620 response_str.append (thread_id_cstr); 621 } 622 data_sp.reset (new DataBufferHeap (response_str.c_str(), response_str.size())); 623 return true; 624 } 625 } 626 } 627 else 628 { 629 // For the use_g_packet == false case, we're going to read each register 630 // individually and store them as binary data in a buffer instead of as ascii 631 // characters. 632 const RegisterInfo *reg_info; 633 634 // data_sp will take ownership of this DataBufferHeap pointer soon. 635 DataBufferSP reg_ctx(new DataBufferHeap(m_reg_info.GetRegisterDataByteSize(), 0)); 636 637 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex (i)) != NULL; i++) 638 { 639 if (reg_info->value_regs) // skip registers that are slices of real registers 640 continue; 641 ReadRegisterBytes (reg_info, m_reg_data); 642 // ReadRegisterBytes saves the contents of the register in to the m_reg_data buffer 643 } 644 memcpy (reg_ctx->GetBytes(), m_reg_data.GetDataStart(), m_reg_info.GetRegisterDataByteSize()); 645 646 data_sp = reg_ctx; 647 return true; 648 } 649 } 650 } 651 else 652 { 653 654 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS)); 655 if (log) 656 { 657 if (log->GetVerbose()) 658 { 659 StreamString strm; 660 gdb_comm.DumpHistory(strm); 661 log->Printf("error: failed to get packet sequence mutex, not sending read all registers:\n%s", strm.GetData()); 662 } 663 else 664 log->Printf("error: failed to get packet sequence mutex, not sending read all registers"); 665 } 666 } 667 668 data_sp.reset(); 669 return false; 670 } 671 672 bool 673 GDBRemoteRegisterContext::WriteAllRegisterValues (const lldb::DataBufferSP &data_sp) 674 { 675 if (!data_sp || data_sp->GetBytes() == NULL || data_sp->GetByteSize() == 0) 676 return false; 677 678 ExecutionContext exe_ctx (CalculateThread()); 679 680 Process *process = exe_ctx.GetProcessPtr(); 681 Thread *thread = exe_ctx.GetThreadPtr(); 682 if (process == NULL || thread == NULL) 683 return false; 684 685 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote()); 686 687 const bool use_g_packet = gdb_comm.AvoidGPackets ((ProcessGDBRemote *)process) == false; 688 689 StringExtractorGDBRemote response; 690 std::unique_lock<std::recursive_mutex> lock; 691 if (gdb_comm.GetSequenceMutex(lock, "Didn't get sequence mutex for write all registers.")) 692 { 693 const bool thread_suffix_supported = gdb_comm.GetThreadSuffixSupported(); 694 ProcessSP process_sp (m_thread.GetProcess()); 695 if (thread_suffix_supported || static_cast<ProcessGDBRemote *>(process_sp.get())->GetGDBRemote().SetCurrentThread(m_thread.GetProtocolID())) 696 { 697 // The data_sp contains the entire G response packet including the 698 // G, and if the thread suffix is supported, it has the thread suffix 699 // as well. 700 const char *G_packet = (const char *)data_sp->GetBytes(); 701 size_t G_packet_len = data_sp->GetByteSize(); 702 if (use_g_packet 703 && gdb_comm.SendPacketAndWaitForResponse (G_packet, 704 G_packet_len, 705 response, 706 false) == GDBRemoteCommunication::PacketResult::Success) 707 { 708 // The data_sp contains the entire G response packet including the 709 // G, and if the thread suffix is supported, it has the thread suffix 710 // as well. 711 const char *G_packet = (const char *)data_sp->GetBytes(); 712 size_t G_packet_len = data_sp->GetByteSize(); 713 if (gdb_comm.SendPacketAndWaitForResponse (G_packet, 714 G_packet_len, 715 response, 716 false) == GDBRemoteCommunication::PacketResult::Success) 717 { 718 if (response.IsOKResponse()) 719 return true; 720 else if (response.IsErrorResponse()) 721 { 722 uint32_t num_restored = 0; 723 // We need to manually go through all of the registers and 724 // restore them manually 725 726 response.GetStringRef().assign (G_packet, G_packet_len); 727 response.SetFilePos(1); // Skip the leading 'G' 728 729 // G_packet_len is hex-ascii characters plus prefix 'G' plus suffix thread specifier. 730 // This means buffer will be a little more than 2x larger than necessary but we resize 731 // it down once we've extracted all hex ascii chars from the packet. 732 DataBufferHeap buffer (G_packet_len, 0); 733 734 const uint32_t bytes_extracted = response.GetHexBytes (buffer.GetBytes(), 735 buffer.GetByteSize(), 736 '\xcc'); 737 738 DataExtractor restore_data (buffer.GetBytes(), 739 buffer.GetByteSize(), 740 m_reg_data.GetByteOrder(), 741 m_reg_data.GetAddressByteSize()); 742 743 if (bytes_extracted < restore_data.GetByteSize()) 744 restore_data.SetData(restore_data.GetDataStart(), bytes_extracted, m_reg_data.GetByteOrder()); 745 746 const RegisterInfo *reg_info; 747 748 // The g packet contents may either include the slice registers (registers defined in 749 // terms of other registers, e.g. eax is a subset of rax) or not. The slice registers 750 // should NOT be in the g packet, but some implementations may incorrectly include them. 751 // 752 // If the slice registers are included in the packet, we must step over the slice registers 753 // when parsing the packet -- relying on the RegisterInfo byte_offset field would be incorrect. 754 // If the slice registers are not included, then using the byte_offset values into the 755 // data buffer is the best way to find individual register values. 756 757 uint64_t size_including_slice_registers = 0; 758 uint64_t size_not_including_slice_registers = 0; 759 uint64_t size_by_highest_offset = 0; 760 761 for (uint32_t reg_idx=0; (reg_info = GetRegisterInfoAtIndex (reg_idx)) != NULL; ++reg_idx) 762 { 763 size_including_slice_registers += reg_info->byte_size; 764 if (reg_info->value_regs == NULL) 765 size_not_including_slice_registers += reg_info->byte_size; 766 if (reg_info->byte_offset >= size_by_highest_offset) 767 size_by_highest_offset = reg_info->byte_offset + reg_info->byte_size; 768 } 769 770 bool use_byte_offset_into_buffer; 771 if (size_by_highest_offset == restore_data.GetByteSize()) 772 { 773 // The size of the packet agrees with the highest offset: + size in the register file 774 use_byte_offset_into_buffer = true; 775 } 776 else if (size_not_including_slice_registers == restore_data.GetByteSize()) 777 { 778 // The size of the packet is the same as concatenating all of the registers sequentially, 779 // skipping the slice registers 780 use_byte_offset_into_buffer = true; 781 } 782 else if (size_including_slice_registers == restore_data.GetByteSize()) 783 { 784 // The slice registers are present in the packet (when they shouldn't be). 785 // Don't try to use the RegisterInfo byte_offset into the restore_data, it will 786 // point to the wrong place. 787 use_byte_offset_into_buffer = false; 788 } 789 else { 790 // None of our expected sizes match the actual g packet data we're looking at. 791 // The most conservative approach here is to use the running total byte offset. 792 use_byte_offset_into_buffer = false; 793 } 794 795 // In case our register definitions don't include the correct offsets, 796 // keep track of the size of each reg & compute offset based on that. 797 uint32_t running_byte_offset = 0; 798 for (uint32_t reg_idx=0; (reg_info = GetRegisterInfoAtIndex (reg_idx)) != NULL; ++reg_idx, running_byte_offset += reg_info->byte_size) 799 { 800 // Skip composite aka slice registers (e.g. eax is a slice of rax). 801 if (reg_info->value_regs) 802 continue; 803 804 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 805 806 uint32_t register_offset; 807 if (use_byte_offset_into_buffer) 808 { 809 register_offset = reg_info->byte_offset; 810 } 811 else 812 { 813 register_offset = running_byte_offset; 814 } 815 816 // Only write down the registers that need to be written 817 // if we are going to be doing registers individually. 818 bool write_reg = true; 819 const uint32_t reg_byte_size = reg_info->byte_size; 820 821 const char *restore_src = (const char *)restore_data.PeekData(register_offset, reg_byte_size); 822 if (restore_src) 823 { 824 StreamString packet; 825 packet.Printf ("P%x=", reg_info->kinds[eRegisterKindProcessPlugin]); 826 packet.PutBytesAsRawHex8 (restore_src, 827 reg_byte_size, 828 endian::InlHostByteOrder(), 829 endian::InlHostByteOrder()); 830 831 if (thread_suffix_supported) 832 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 833 834 SetRegisterIsValid(reg, false); 835 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 836 packet.GetString().size(), 837 response, 838 false) == GDBRemoteCommunication::PacketResult::Success) 839 { 840 const char *current_src = (const char *)m_reg_data.PeekData(register_offset, reg_byte_size); 841 if (current_src) 842 write_reg = memcmp (current_src, restore_src, reg_byte_size) != 0; 843 } 844 845 if (write_reg) 846 { 847 StreamString packet; 848 packet.Printf ("P%x=", reg_info->kinds[eRegisterKindProcessPlugin]); 849 packet.PutBytesAsRawHex8 (restore_src, 850 reg_byte_size, 851 endian::InlHostByteOrder(), 852 endian::InlHostByteOrder()); 853 854 if (thread_suffix_supported) 855 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 856 857 SetRegisterIsValid(reg, false); 858 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 859 packet.GetString().size(), 860 response, 861 false) == GDBRemoteCommunication::PacketResult::Success) 862 { 863 if (response.IsOKResponse()) 864 ++num_restored; 865 } 866 } 867 } 868 } 869 return num_restored > 0; 870 } 871 } 872 } 873 else 874 { 875 // For the use_g_packet == false case, we're going to write each register 876 // individually. The data buffer is binary data in this case, instead of 877 // ascii characters. 878 879 bool arm64_debugserver = false; 880 if (m_thread.GetProcess().get()) 881 { 882 const ArchSpec &arch = m_thread.GetProcess()->GetTarget().GetArchitecture(); 883 if (arch.IsValid() 884 && arch.GetMachine() == llvm::Triple::aarch64 885 && arch.GetTriple().getVendor() == llvm::Triple::Apple 886 && arch.GetTriple().getOS() == llvm::Triple::IOS) 887 { 888 arm64_debugserver = true; 889 } 890 } 891 uint32_t num_restored = 0; 892 const RegisterInfo *reg_info; 893 for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex (i)) != NULL; i++) 894 { 895 if (reg_info->value_regs) // skip registers that are slices of real registers 896 continue; 897 // Skip the fpsr and fpcr floating point status/control register writing to 898 // work around a bug in an older version of debugserver that would lead to 899 // register context corruption when writing fpsr/fpcr. 900 if (arm64_debugserver && 901 (strcmp (reg_info->name, "fpsr") == 0 || strcmp (reg_info->name, "fpcr") == 0)) 902 { 903 continue; 904 } 905 StreamString packet; 906 packet.Printf ("P%x=", reg_info->kinds[eRegisterKindProcessPlugin]); 907 packet.PutBytesAsRawHex8 (data_sp->GetBytes() + reg_info->byte_offset, reg_info->byte_size, endian::InlHostByteOrder(), endian::InlHostByteOrder()); 908 if (thread_suffix_supported) 909 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID()); 910 911 SetRegisterIsValid(reg_info, false); 912 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), 913 packet.GetString().size(), 914 response, 915 false) == GDBRemoteCommunication::PacketResult::Success) 916 { 917 if (response.IsOKResponse()) 918 ++num_restored; 919 } 920 } 921 return num_restored > 0; 922 } 923 } 924 } 925 else 926 { 927 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS)); 928 if (log) 929 { 930 if (log->GetVerbose()) 931 { 932 StreamString strm; 933 gdb_comm.DumpHistory(strm); 934 log->Printf("error: failed to get packet sequence mutex, not sending write all registers:\n%s", strm.GetData()); 935 } 936 else 937 log->Printf("error: failed to get packet sequence mutex, not sending write all registers"); 938 } 939 } 940 return false; 941 } 942 943 944 uint32_t 945 GDBRemoteRegisterContext::ConvertRegisterKindToRegisterNumber (lldb::RegisterKind kind, uint32_t num) 946 { 947 return m_reg_info.ConvertRegisterKindToRegisterNumber (kind, num); 948 } 949 950 951 void 952 GDBRemoteDynamicRegisterInfo::HardcodeARMRegisters(bool from_scratch) 953 { 954 // For Advanced SIMD and VFP register mapping. 955 static uint32_t g_d0_regs[] = { 26, 27, LLDB_INVALID_REGNUM }; // (s0, s1) 956 static uint32_t g_d1_regs[] = { 28, 29, LLDB_INVALID_REGNUM }; // (s2, s3) 957 static uint32_t g_d2_regs[] = { 30, 31, LLDB_INVALID_REGNUM }; // (s4, s5) 958 static uint32_t g_d3_regs[] = { 32, 33, LLDB_INVALID_REGNUM }; // (s6, s7) 959 static uint32_t g_d4_regs[] = { 34, 35, LLDB_INVALID_REGNUM }; // (s8, s9) 960 static uint32_t g_d5_regs[] = { 36, 37, LLDB_INVALID_REGNUM }; // (s10, s11) 961 static uint32_t g_d6_regs[] = { 38, 39, LLDB_INVALID_REGNUM }; // (s12, s13) 962 static uint32_t g_d7_regs[] = { 40, 41, LLDB_INVALID_REGNUM }; // (s14, s15) 963 static uint32_t g_d8_regs[] = { 42, 43, LLDB_INVALID_REGNUM }; // (s16, s17) 964 static uint32_t g_d9_regs[] = { 44, 45, LLDB_INVALID_REGNUM }; // (s18, s19) 965 static uint32_t g_d10_regs[] = { 46, 47, LLDB_INVALID_REGNUM }; // (s20, s21) 966 static uint32_t g_d11_regs[] = { 48, 49, LLDB_INVALID_REGNUM }; // (s22, s23) 967 static uint32_t g_d12_regs[] = { 50, 51, LLDB_INVALID_REGNUM }; // (s24, s25) 968 static uint32_t g_d13_regs[] = { 52, 53, LLDB_INVALID_REGNUM }; // (s26, s27) 969 static uint32_t g_d14_regs[] = { 54, 55, LLDB_INVALID_REGNUM }; // (s28, s29) 970 static uint32_t g_d15_regs[] = { 56, 57, LLDB_INVALID_REGNUM }; // (s30, s31) 971 static uint32_t g_q0_regs[] = { 26, 27, 28, 29, LLDB_INVALID_REGNUM }; // (d0, d1) -> (s0, s1, s2, s3) 972 static uint32_t g_q1_regs[] = { 30, 31, 32, 33, LLDB_INVALID_REGNUM }; // (d2, d3) -> (s4, s5, s6, s7) 973 static uint32_t g_q2_regs[] = { 34, 35, 36, 37, LLDB_INVALID_REGNUM }; // (d4, d5) -> (s8, s9, s10, s11) 974 static uint32_t g_q3_regs[] = { 38, 39, 40, 41, LLDB_INVALID_REGNUM }; // (d6, d7) -> (s12, s13, s14, s15) 975 static uint32_t g_q4_regs[] = { 42, 43, 44, 45, LLDB_INVALID_REGNUM }; // (d8, d9) -> (s16, s17, s18, s19) 976 static uint32_t g_q5_regs[] = { 46, 47, 48, 49, LLDB_INVALID_REGNUM }; // (d10, d11) -> (s20, s21, s22, s23) 977 static uint32_t g_q6_regs[] = { 50, 51, 52, 53, LLDB_INVALID_REGNUM }; // (d12, d13) -> (s24, s25, s26, s27) 978 static uint32_t g_q7_regs[] = { 54, 55, 56, 57, LLDB_INVALID_REGNUM }; // (d14, d15) -> (s28, s29, s30, s31) 979 static uint32_t g_q8_regs[] = { 59, 60, LLDB_INVALID_REGNUM }; // (d16, d17) 980 static uint32_t g_q9_regs[] = { 61, 62, LLDB_INVALID_REGNUM }; // (d18, d19) 981 static uint32_t g_q10_regs[] = { 63, 64, LLDB_INVALID_REGNUM }; // (d20, d21) 982 static uint32_t g_q11_regs[] = { 65, 66, LLDB_INVALID_REGNUM }; // (d22, d23) 983 static uint32_t g_q12_regs[] = { 67, 68, LLDB_INVALID_REGNUM }; // (d24, d25) 984 static uint32_t g_q13_regs[] = { 69, 70, LLDB_INVALID_REGNUM }; // (d26, d27) 985 static uint32_t g_q14_regs[] = { 71, 72, LLDB_INVALID_REGNUM }; // (d28, d29) 986 static uint32_t g_q15_regs[] = { 73, 74, LLDB_INVALID_REGNUM }; // (d30, d31) 987 988 // This is our array of composite registers, with each element coming from the above register mappings. 989 static uint32_t *g_composites[] = { 990 g_d0_regs, g_d1_regs, g_d2_regs, g_d3_regs, g_d4_regs, g_d5_regs, g_d6_regs, g_d7_regs, 991 g_d8_regs, g_d9_regs, g_d10_regs, g_d11_regs, g_d12_regs, g_d13_regs, g_d14_regs, g_d15_regs, 992 g_q0_regs, g_q1_regs, g_q2_regs, g_q3_regs, g_q4_regs, g_q5_regs, g_q6_regs, g_q7_regs, 993 g_q8_regs, g_q9_regs, g_q10_regs, g_q11_regs, g_q12_regs, g_q13_regs, g_q14_regs, g_q15_regs 994 }; 995 996 static RegisterInfo g_register_infos[] = { 997 // NAME ALT SZ OFF ENCODING FORMAT EH_FRAME DWARF GENERIC PROCESS PLUGIN LLDB VALUE REGS INVALIDATE REGS 998 // ====== ====== === === ============= ============ =================== =================== ====================== ============= ==== ========== =============== 999 { "r0", "arg1", 4, 0, eEncodingUint, eFormatHex, { ehframe_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1,0, 0 }, NULL, NULL}, 1000 { "r1", "arg2", 4, 0, eEncodingUint, eFormatHex, { ehframe_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2,1, 1 }, NULL, NULL}, 1001 { "r2", "arg3", 4, 0, eEncodingUint, eFormatHex, { ehframe_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3,2, 2 }, NULL, NULL}, 1002 { "r3", "arg4", 4, 0, eEncodingUint, eFormatHex, { ehframe_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4,3, 3 }, NULL, NULL}, 1003 { "r4", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r4, dwarf_r4, LLDB_INVALID_REGNUM, 4, 4 }, NULL, NULL}, 1004 { "r5", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r5, dwarf_r5, LLDB_INVALID_REGNUM, 5, 5 }, NULL, NULL}, 1005 { "r6", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r6, dwarf_r6, LLDB_INVALID_REGNUM, 6, 6 }, NULL, NULL}, 1006 { "r7", "fp", 4, 0, eEncodingUint, eFormatHex, { ehframe_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, 7, 7 }, NULL, NULL}, 1007 { "r8", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r8, dwarf_r8, LLDB_INVALID_REGNUM, 8, 8 }, NULL, NULL}, 1008 { "r9", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r9, dwarf_r9, LLDB_INVALID_REGNUM, 9, 9 }, NULL, NULL}, 1009 { "r10", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r10, dwarf_r10, LLDB_INVALID_REGNUM, 10, 10 }, NULL, NULL}, 1010 { "r11", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r11, dwarf_r11, LLDB_INVALID_REGNUM, 11, 11 }, NULL, NULL}, 1011 { "r12", NULL, 4, 0, eEncodingUint, eFormatHex, { ehframe_r12, dwarf_r12, LLDB_INVALID_REGNUM, 12, 12 }, NULL, NULL}, 1012 { "sp", "r13", 4, 0, eEncodingUint, eFormatHex, { ehframe_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, 13, 13 }, NULL, NULL}, 1013 { "lr", "r14", 4, 0, eEncodingUint, eFormatHex, { ehframe_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, 14, 14 }, NULL, NULL}, 1014 { "pc", "r15", 4, 0, eEncodingUint, eFormatHex, { ehframe_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, 15, 15 }, NULL, NULL}, 1015 { "f0", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 16, 16 }, NULL, NULL}, 1016 { "f1", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 17, 17 }, NULL, NULL}, 1017 { "f2", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 18, 18 }, NULL, NULL}, 1018 { "f3", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 19, 19 }, NULL, NULL}, 1019 { "f4", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 20, 20 }, NULL, NULL}, 1020 { "f5", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 21, 21 }, NULL, NULL}, 1021 { "f6", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 22, 22 }, NULL, NULL}, 1022 { "f7", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 23, 23 }, NULL, NULL}, 1023 { "fps", NULL, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 24, 24 }, NULL, NULL}, 1024 { "cpsr","flags", 4, 0, eEncodingUint, eFormatHex, { ehframe_cpsr, dwarf_cpsr, LLDB_INVALID_REGNUM, 25, 25 }, NULL, NULL}, 1025 { "s0", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, 26, 26 }, NULL, NULL}, 1026 { "s1", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, 27, 27 }, NULL, NULL}, 1027 { "s2", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, 28, 28 }, NULL, NULL}, 1028 { "s3", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, 29, 29 }, NULL, NULL}, 1029 { "s4", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, 30, 30 }, NULL, NULL}, 1030 { "s5", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, 31, 31 }, NULL, NULL}, 1031 { "s6", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, 32, 32 }, NULL, NULL}, 1032 { "s7", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, 33, 33 }, NULL, NULL}, 1033 { "s8", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, 34, 34 }, NULL, NULL}, 1034 { "s9", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, 35, 35 }, NULL, NULL}, 1035 { "s10", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, 36, 36 }, NULL, NULL}, 1036 { "s11", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, 37, 37 }, NULL, NULL}, 1037 { "s12", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, 38, 38 }, NULL, NULL}, 1038 { "s13", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, 39, 39 }, NULL, NULL}, 1039 { "s14", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, 40, 40 }, NULL, NULL}, 1040 { "s15", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, 41, 41 }, NULL, NULL}, 1041 { "s16", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, 42, 42 }, NULL, NULL}, 1042 { "s17", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, 43, 43 }, NULL, NULL}, 1043 { "s18", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, 44, 44 }, NULL, NULL}, 1044 { "s19", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, 45, 45 }, NULL, NULL}, 1045 { "s20", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, 46, 46 }, NULL, NULL}, 1046 { "s21", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, 47, 47 }, NULL, NULL}, 1047 { "s22", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, 48, 48 }, NULL, NULL}, 1048 { "s23", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, 49, 49 }, NULL, NULL}, 1049 { "s24", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, 50, 50 }, NULL, NULL}, 1050 { "s25", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, 51, 51 }, NULL, NULL}, 1051 { "s26", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, 52, 52 }, NULL, NULL}, 1052 { "s27", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, 53, 53 }, NULL, NULL}, 1053 { "s28", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, 54, 54 }, NULL, NULL}, 1054 { "s29", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, 55, 55 }, NULL, NULL}, 1055 { "s30", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, 56, 56 }, NULL, NULL}, 1056 { "s31", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, 57, 57 }, NULL, NULL}, 1057 { "fpscr",NULL, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 58, 58 }, NULL, NULL}, 1058 { "d16", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, 59, 59 }, NULL, NULL}, 1059 { "d17", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, 60, 60 }, NULL, NULL}, 1060 { "d18", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, 61, 61 }, NULL, NULL}, 1061 { "d19", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, 62, 62 }, NULL, NULL}, 1062 { "d20", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, 63, 63 }, NULL, NULL}, 1063 { "d21", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, 64, 64 }, NULL, NULL}, 1064 { "d22", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, 65, 65 }, NULL, NULL}, 1065 { "d23", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, 66, 66 }, NULL, NULL}, 1066 { "d24", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, 67, 67 }, NULL, NULL}, 1067 { "d25", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, 68, 68 }, NULL, NULL}, 1068 { "d26", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, 69, 69 }, NULL, NULL}, 1069 { "d27", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, 70, 70 }, NULL, NULL}, 1070 { "d28", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, 71, 71 }, NULL, NULL}, 1071 { "d29", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, 72, 72 }, NULL, NULL}, 1072 { "d30", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, 73, 73 }, NULL, NULL}, 1073 { "d31", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, 74, 74 }, NULL, NULL}, 1074 { "d0", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, 75, 75 }, g_d0_regs, NULL}, 1075 { "d1", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, 76, 76 }, g_d1_regs, NULL}, 1076 { "d2", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, 77, 77 }, g_d2_regs, NULL}, 1077 { "d3", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, 78, 78 }, g_d3_regs, NULL}, 1078 { "d4", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, 79, 79 }, g_d4_regs, NULL}, 1079 { "d5", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, 80, 80 }, g_d5_regs, NULL}, 1080 { "d6", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, 81, 81 }, g_d6_regs, NULL}, 1081 { "d7", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, 82, 82 }, g_d7_regs, NULL}, 1082 { "d8", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, 83, 83 }, g_d8_regs, NULL}, 1083 { "d9", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, 84, 84 }, g_d9_regs, NULL}, 1084 { "d10", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, 85, 85 }, g_d10_regs, NULL}, 1085 { "d11", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, 86, 86 }, g_d11_regs, NULL}, 1086 { "d12", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, 87, 87 }, g_d12_regs, NULL}, 1087 { "d13", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, 88, 88 }, g_d13_regs, NULL}, 1088 { "d14", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, 89, 89 }, g_d14_regs, NULL}, 1089 { "d15", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, 90, 90 }, g_d15_regs, NULL}, 1090 { "q0", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q0, LLDB_INVALID_REGNUM, 91, 91 }, g_q0_regs, NULL}, 1091 { "q1", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q1, LLDB_INVALID_REGNUM, 92, 92 }, g_q1_regs, NULL}, 1092 { "q2", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q2, LLDB_INVALID_REGNUM, 93, 93 }, g_q2_regs, NULL}, 1093 { "q3", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q3, LLDB_INVALID_REGNUM, 94, 94 }, g_q3_regs, NULL}, 1094 { "q4", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q4, LLDB_INVALID_REGNUM, 95, 95 }, g_q4_regs, NULL}, 1095 { "q5", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q5, LLDB_INVALID_REGNUM, 96, 96 }, g_q5_regs, NULL}, 1096 { "q6", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q6, LLDB_INVALID_REGNUM, 97, 97 }, g_q6_regs, NULL}, 1097 { "q7", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q7, LLDB_INVALID_REGNUM, 98, 98 }, g_q7_regs, NULL}, 1098 { "q8", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q8, LLDB_INVALID_REGNUM, 99, 99 }, g_q8_regs, NULL}, 1099 { "q9", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q9, LLDB_INVALID_REGNUM, 100, 100 }, g_q9_regs, NULL}, 1100 { "q10", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q10, LLDB_INVALID_REGNUM, 101, 101 }, g_q10_regs, NULL}, 1101 { "q11", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q11, LLDB_INVALID_REGNUM, 102, 102 }, g_q11_regs, NULL}, 1102 { "q12", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q12, LLDB_INVALID_REGNUM, 103, 103 }, g_q12_regs, NULL}, 1103 { "q13", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q13, LLDB_INVALID_REGNUM, 104, 104 }, g_q13_regs, NULL}, 1104 { "q14", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q14, LLDB_INVALID_REGNUM, 105, 105 }, g_q14_regs, NULL}, 1105 { "q15", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q15, LLDB_INVALID_REGNUM, 106, 106 }, g_q15_regs, NULL} 1106 }; 1107 1108 static const uint32_t num_registers = llvm::array_lengthof(g_register_infos); 1109 static ConstString gpr_reg_set ("General Purpose Registers"); 1110 static ConstString sfp_reg_set ("Software Floating Point Registers"); 1111 static ConstString vfp_reg_set ("Floating Point Registers"); 1112 size_t i; 1113 if (from_scratch) 1114 { 1115 // Calculate the offsets of the registers 1116 // Note that the layout of the "composite" registers (d0-d15 and q0-q15) which comes after the 1117 // "primordial" registers is important. This enables us to calculate the offset of the composite 1118 // register by using the offset of its first primordial register. For example, to calculate the 1119 // offset of q0, use s0's offset. 1120 if (g_register_infos[2].byte_offset == 0) 1121 { 1122 uint32_t byte_offset = 0; 1123 for (i=0; i<num_registers; ++i) 1124 { 1125 // For primordial registers, increment the byte_offset by the byte_size to arrive at the 1126 // byte_offset for the next register. Otherwise, we have a composite register whose 1127 // offset can be calculated by consulting the offset of its first primordial register. 1128 if (!g_register_infos[i].value_regs) 1129 { 1130 g_register_infos[i].byte_offset = byte_offset; 1131 byte_offset += g_register_infos[i].byte_size; 1132 } 1133 else 1134 { 1135 const uint32_t first_primordial_reg = g_register_infos[i].value_regs[0]; 1136 g_register_infos[i].byte_offset = g_register_infos[first_primordial_reg].byte_offset; 1137 } 1138 } 1139 } 1140 for (i=0; i<num_registers; ++i) 1141 { 1142 ConstString name; 1143 ConstString alt_name; 1144 if (g_register_infos[i].name && g_register_infos[i].name[0]) 1145 name.SetCString(g_register_infos[i].name); 1146 if (g_register_infos[i].alt_name && g_register_infos[i].alt_name[0]) 1147 alt_name.SetCString(g_register_infos[i].alt_name); 1148 1149 if (i <= 15 || i == 25) 1150 AddRegister (g_register_infos[i], name, alt_name, gpr_reg_set); 1151 else if (i <= 24) 1152 AddRegister (g_register_infos[i], name, alt_name, sfp_reg_set); 1153 else 1154 AddRegister (g_register_infos[i], name, alt_name, vfp_reg_set); 1155 } 1156 } 1157 else 1158 { 1159 // Add composite registers to our primordial registers, then. 1160 const size_t num_composites = llvm::array_lengthof(g_composites); 1161 const size_t num_dynamic_regs = GetNumRegisters(); 1162 const size_t num_common_regs = num_registers - num_composites; 1163 RegisterInfo *g_comp_register_infos = g_register_infos + num_common_regs; 1164 1165 // First we need to validate that all registers that we already have match the non composite regs. 1166 // If so, then we can add the registers, else we need to bail 1167 bool match = true; 1168 if (num_dynamic_regs == num_common_regs) 1169 { 1170 for (i=0; match && i<num_dynamic_regs; ++i) 1171 { 1172 // Make sure all register names match 1173 if (m_regs[i].name && g_register_infos[i].name) 1174 { 1175 if (strcmp(m_regs[i].name, g_register_infos[i].name)) 1176 { 1177 match = false; 1178 break; 1179 } 1180 } 1181 1182 // Make sure all register byte sizes match 1183 if (m_regs[i].byte_size != g_register_infos[i].byte_size) 1184 { 1185 match = false; 1186 break; 1187 } 1188 } 1189 } 1190 else 1191 { 1192 // Wrong number of registers. 1193 match = false; 1194 } 1195 // If "match" is true, then we can add extra registers. 1196 if (match) 1197 { 1198 for (i=0; i<num_composites; ++i) 1199 { 1200 ConstString name; 1201 ConstString alt_name; 1202 const uint32_t first_primordial_reg = g_comp_register_infos[i].value_regs[0]; 1203 const char *reg_name = g_register_infos[first_primordial_reg].name; 1204 if (reg_name && reg_name[0]) 1205 { 1206 for (uint32_t j = 0; j < num_dynamic_regs; ++j) 1207 { 1208 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(j); 1209 // Find a matching primordial register info entry. 1210 if (reg_info && reg_info->name && ::strcasecmp(reg_info->name, reg_name) == 0) 1211 { 1212 // The name matches the existing primordial entry. 1213 // Find and assign the offset, and then add this composite register entry. 1214 g_comp_register_infos[i].byte_offset = reg_info->byte_offset; 1215 name.SetCString(g_comp_register_infos[i].name); 1216 AddRegister(g_comp_register_infos[i], name, alt_name, vfp_reg_set); 1217 } 1218 } 1219 } 1220 } 1221 } 1222 } 1223 } 1224