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