1254721Semaste//===-- GDBRemoteRegisterContext.cpp ----------------------------*- C++ -*-===// 2254721Semaste// 3353358Sdim// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4353358Sdim// See https://llvm.org/LICENSE.txt for license information. 5353358Sdim// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6254721Semaste// 7254721Semaste//===----------------------------------------------------------------------===// 8254721Semaste 9254721Semaste#include "GDBRemoteRegisterContext.h" 10254721Semaste 11254721Semaste#include "lldb/Target/ExecutionContext.h" 12276479Sdim#include "lldb/Target/Target.h" 13321369Sdim#include "lldb/Utility/DataBufferHeap.h" 14321369Sdim#include "lldb/Utility/DataExtractor.h" 15344779Sdim#include "lldb/Utility/RegisterValue.h" 16344779Sdim#include "lldb/Utility/Scalar.h" 17321369Sdim#include "lldb/Utility/StreamString.h" 18254721Semaste#include "ProcessGDBRemote.h" 19254721Semaste#include "ProcessGDBRemoteLog.h" 20254721Semaste#include "ThreadGDBRemote.h" 21254721Semaste#include "Utility/ARM_DWARF_Registers.h" 22296417Sdim#include "Utility/ARM_ehframe_Registers.h" 23341825Sdim#include "lldb/Utility/StringExtractorGDBRemote.h" 24254721Semaste 25353358Sdim#include <memory> 26353358Sdim 27254721Semasteusing namespace lldb; 28254721Semasteusing namespace lldb_private; 29288943Sdimusing namespace lldb_private::process_gdb_remote; 30254721Semaste 31254721Semaste// GDBRemoteRegisterContext constructor 32314564SdimGDBRemoteRegisterContext::GDBRemoteRegisterContext( 33314564Sdim ThreadGDBRemote &thread, uint32_t concrete_frame_idx, 34360784Sdim GDBRemoteDynamicRegisterInfo ®_info, bool read_all_at_once, 35360784Sdim bool write_all_at_once) 36314564Sdim : RegisterContext(thread, concrete_frame_idx), m_reg_info(reg_info), 37360784Sdim m_reg_valid(), m_reg_data(), m_read_all_at_once(read_all_at_once), 38360784Sdim m_write_all_at_once(write_all_at_once) { 39341825Sdim // Resize our vector of bools to contain one bool for every register. We will 40341825Sdim // use these boolean values to know when a register value is valid in 41341825Sdim // m_reg_data. 42314564Sdim m_reg_valid.resize(reg_info.GetNumRegisters()); 43254721Semaste 44314564Sdim // Make a heap based buffer that is big enough to store all registers 45314564Sdim DataBufferSP reg_data_sp( 46314564Sdim new DataBufferHeap(reg_info.GetRegisterDataByteSize(), 0)); 47314564Sdim m_reg_data.SetData(reg_data_sp); 48314564Sdim m_reg_data.SetByteOrder(thread.GetProcess()->GetByteOrder()); 49254721Semaste} 50254721Semaste 51254721Semaste// Destructor 52314564SdimGDBRemoteRegisterContext::~GDBRemoteRegisterContext() {} 53254721Semaste 54314564Sdimvoid GDBRemoteRegisterContext::InvalidateAllRegisters() { 55314564Sdim SetAllRegisterValid(false); 56254721Semaste} 57254721Semaste 58314564Sdimvoid GDBRemoteRegisterContext::SetAllRegisterValid(bool b) { 59314564Sdim std::vector<bool>::iterator pos, end = m_reg_valid.end(); 60314564Sdim for (pos = m_reg_valid.begin(); pos != end; ++pos) 61314564Sdim *pos = b; 62254721Semaste} 63254721Semaste 64314564Sdimsize_t GDBRemoteRegisterContext::GetRegisterCount() { 65314564Sdim return m_reg_info.GetNumRegisters(); 66254721Semaste} 67254721Semaste 68254721Semasteconst RegisterInfo * 69314564SdimGDBRemoteRegisterContext::GetRegisterInfoAtIndex(size_t reg) { 70314564Sdim RegisterInfo *reg_info = m_reg_info.GetRegisterInfoAtIndex(reg); 71309124Sdim 72314564Sdim if (reg_info && reg_info->dynamic_size_dwarf_expr_bytes) { 73314564Sdim const ArchSpec &arch = m_thread.GetProcess()->GetTarget().GetArchitecture(); 74314564Sdim uint8_t reg_size = UpdateDynamicRegisterSize(arch, reg_info); 75314564Sdim reg_info->byte_size = reg_size; 76314564Sdim } 77314564Sdim return reg_info; 78254721Semaste} 79254721Semaste 80314564Sdimsize_t GDBRemoteRegisterContext::GetRegisterSetCount() { 81314564Sdim return m_reg_info.GetNumRegisterSets(); 82254721Semaste} 83254721Semaste 84314564Sdimconst RegisterSet *GDBRemoteRegisterContext::GetRegisterSet(size_t reg_set) { 85314564Sdim return m_reg_info.GetRegisterSet(reg_set); 86314564Sdim} 87254721Semaste 88314564Sdimbool GDBRemoteRegisterContext::ReadRegister(const RegisterInfo *reg_info, 89314564Sdim RegisterValue &value) { 90314564Sdim // Read the register 91314564Sdim if (ReadRegisterBytes(reg_info, m_reg_data)) { 92360784Sdim const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 93360784Sdim if (m_reg_valid[reg] == false) 94360784Sdim return false; 95314564Sdim const bool partial_data_ok = false; 96321369Sdim Status error(value.SetValueFromData( 97321369Sdim reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok)); 98314564Sdim return error.Success(); 99314564Sdim } 100314564Sdim return false; 101254721Semaste} 102254721Semaste 103314564Sdimbool GDBRemoteRegisterContext::PrivateSetRegisterValue( 104314564Sdim uint32_t reg, llvm::ArrayRef<uint8_t> data) { 105314564Sdim const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg); 106353358Sdim if (reg_info == nullptr) 107254721Semaste return false; 108254721Semaste 109314564Sdim // Invalidate if needed 110314564Sdim InvalidateIfNeeded(false); 111254721Semaste 112314564Sdim const size_t reg_byte_size = reg_info->byte_size; 113314564Sdim memcpy(const_cast<uint8_t *>( 114314564Sdim m_reg_data.PeekData(reg_info->byte_offset, reg_byte_size)), 115314564Sdim data.data(), std::min(data.size(), reg_byte_size)); 116314564Sdim bool success = data.size() >= reg_byte_size; 117314564Sdim if (success) { 118314564Sdim SetRegisterIsValid(reg, true); 119314564Sdim } else if (data.size() > 0) { 120341825Sdim // Only set register is valid to false if we copied some bytes, else leave 121341825Sdim // it as it was. 122314564Sdim SetRegisterIsValid(reg, false); 123314564Sdim } 124314564Sdim return success; 125254721Semaste} 126254721Semaste 127314564Sdimbool GDBRemoteRegisterContext::PrivateSetRegisterValue(uint32_t reg, 128314564Sdim uint64_t new_reg_val) { 129314564Sdim const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg); 130353358Sdim if (reg_info == nullptr) 131314564Sdim return false; 132296417Sdim 133314564Sdim // Early in process startup, we can get a thread that has an invalid byte 134341825Sdim // order because the process hasn't been completely set up yet (see the ctor 135341825Sdim // where the byte order is setfrom the process). If that's the case, we 136341825Sdim // can't set the value here. 137314564Sdim if (m_reg_data.GetByteOrder() == eByteOrderInvalid) { 138314564Sdim return false; 139314564Sdim } 140296417Sdim 141314564Sdim // Invalidate if needed 142314564Sdim InvalidateIfNeeded(false); 143296417Sdim 144314564Sdim DataBufferSP buffer_sp(new DataBufferHeap(&new_reg_val, sizeof(new_reg_val))); 145314564Sdim DataExtractor data(buffer_sp, endian::InlHostByteOrder(), sizeof(void *)); 146296417Sdim 147314564Sdim // If our register context and our register info disagree, which should never 148341825Sdim // happen, don't overwrite past the end of the buffer. 149314564Sdim if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 150314564Sdim return false; 151296417Sdim 152314564Sdim // Grab a pointer to where we are going to put this register 153314564Sdim uint8_t *dst = const_cast<uint8_t *>( 154314564Sdim m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 155296417Sdim 156353358Sdim if (dst == nullptr) 157314564Sdim return false; 158296417Sdim 159314564Sdim if (data.CopyByteOrderedData(0, // src offset 160314564Sdim reg_info->byte_size, // src length 161314564Sdim dst, // dst 162314564Sdim reg_info->byte_size, // dst length 163314564Sdim m_reg_data.GetByteOrder())) // dst byte order 164314564Sdim { 165314564Sdim SetRegisterIsValid(reg, true); 166314564Sdim return true; 167314564Sdim } 168314564Sdim return false; 169296417Sdim} 170296417Sdim 171254721Semaste// Helper function for GDBRemoteRegisterContext::ReadRegisterBytes(). 172314564Sdimbool GDBRemoteRegisterContext::GetPrimordialRegister( 173314564Sdim const RegisterInfo *reg_info, GDBRemoteCommunicationClient &gdb_comm) { 174314564Sdim const uint32_t lldb_reg = reg_info->kinds[eRegisterKindLLDB]; 175314564Sdim const uint32_t remote_reg = reg_info->kinds[eRegisterKindProcessPlugin]; 176327952Sdim 177314564Sdim if (DataBufferSP buffer_sp = 178314564Sdim gdb_comm.ReadRegister(m_thread.GetProtocolID(), remote_reg)) 179314564Sdim return PrivateSetRegisterValue( 180314564Sdim lldb_reg, llvm::ArrayRef<uint8_t>(buffer_sp->GetBytes(), 181314564Sdim buffer_sp->GetByteSize())); 182314564Sdim return false; 183254721Semaste} 184258884Semaste 185314564Sdimbool GDBRemoteRegisterContext::ReadRegisterBytes(const RegisterInfo *reg_info, 186314564Sdim DataExtractor &data) { 187314564Sdim ExecutionContext exe_ctx(CalculateThread()); 188254721Semaste 189314564Sdim Process *process = exe_ctx.GetProcessPtr(); 190314564Sdim Thread *thread = exe_ctx.GetThreadPtr(); 191353358Sdim if (process == nullptr || thread == nullptr) 192314564Sdim return false; 193254721Semaste 194314564Sdim GDBRemoteCommunicationClient &gdb_comm( 195314564Sdim ((ProcessGDBRemote *)process)->GetGDBRemote()); 196254721Semaste 197314564Sdim InvalidateIfNeeded(false); 198254721Semaste 199314564Sdim const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 200254721Semaste 201314564Sdim if (!GetRegisterIsValid(reg)) { 202314564Sdim if (m_read_all_at_once) { 203314564Sdim if (DataBufferSP buffer_sp = 204314564Sdim gdb_comm.ReadAllRegisters(m_thread.GetProtocolID())) { 205314564Sdim memcpy(const_cast<uint8_t *>(m_reg_data.GetDataStart()), 206314564Sdim buffer_sp->GetBytes(), 207314564Sdim std::min(buffer_sp->GetByteSize(), m_reg_data.GetByteSize())); 208314564Sdim if (buffer_sp->GetByteSize() >= m_reg_data.GetByteSize()) { 209314564Sdim SetAllRegisterValid(true); 210314564Sdim return true; 211360784Sdim } else if (buffer_sp->GetByteSize() > 0) { 212360784Sdim const int regcount = m_reg_info.GetNumRegisters(); 213360784Sdim for (int i = 0; i < regcount; i++) { 214360784Sdim struct RegisterInfo *reginfo = m_reg_info.GetRegisterInfoAtIndex(i); 215360784Sdim if (reginfo->byte_offset + reginfo->byte_size 216360784Sdim <= buffer_sp->GetByteSize()) { 217360784Sdim m_reg_valid[i] = true; 218360784Sdim } else { 219360784Sdim m_reg_valid[i] = false; 220360784Sdim } 221360784Sdim } 222360784Sdim return true; 223353358Sdim } else { 224353358Sdim Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 225353358Sdim GDBR_LOG_PACKETS)); 226360784Sdim LLDB_LOGF( 227360784Sdim log, 228360784Sdim "error: GDBRemoteRegisterContext::ReadRegisterBytes tried " 229360784Sdim "to read the " 230360784Sdim "entire register context at once, expected at least %" PRId64 231360784Sdim " bytes " 232360784Sdim "but only got %" PRId64 " bytes.", 233360784Sdim m_reg_data.GetByteSize(), buffer_sp->GetByteSize()); 234258884Semaste } 235314564Sdim } 236314564Sdim return false; 237314564Sdim } 238314564Sdim if (reg_info->value_regs) { 239314564Sdim // Process this composite register request by delegating to the 240341825Sdim // constituent primordial registers. 241258884Semaste 242314564Sdim // Index of the primordial register. 243314564Sdim bool success = true; 244314564Sdim for (uint32_t idx = 0; success; ++idx) { 245314564Sdim const uint32_t prim_reg = reg_info->value_regs[idx]; 246314564Sdim if (prim_reg == LLDB_INVALID_REGNUM) 247314564Sdim break; 248341825Sdim // We have a valid primordial register as our constituent. Grab the 249341825Sdim // corresponding register info. 250314564Sdim const RegisterInfo *prim_reg_info = GetRegisterInfoAtIndex(prim_reg); 251353358Sdim if (prim_reg_info == nullptr) 252314564Sdim success = false; 253314564Sdim else { 254314564Sdim // Read the containing register if it hasn't already been read 255314564Sdim if (!GetRegisterIsValid(prim_reg)) 256314564Sdim success = GetPrimordialRegister(prim_reg_info, gdb_comm); 257254721Semaste } 258314564Sdim } 259254721Semaste 260314564Sdim if (success) { 261314564Sdim // If we reach this point, all primordial register requests have 262341825Sdim // succeeded. Validate this composite register. 263314564Sdim SetRegisterIsValid(reg_info, true); 264314564Sdim } 265314564Sdim } else { 266314564Sdim // Get each register individually 267314564Sdim GetPrimordialRegister(reg_info, gdb_comm); 268254721Semaste } 269254721Semaste 270314564Sdim // Make sure we got a valid register value after reading it 271314564Sdim if (!GetRegisterIsValid(reg)) 272314564Sdim return false; 273314564Sdim } 274276479Sdim 275314564Sdim if (&data != &m_reg_data) { 276314564Sdim assert(m_reg_data.GetByteSize() >= 277314564Sdim reg_info->byte_offset + reg_info->byte_size); 278314564Sdim // If our register context and our register info disagree, which should 279341825Sdim // never happen, don't read past the end of the buffer. 280314564Sdim if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 281314564Sdim return false; 282276479Sdim 283341825Sdim // If we aren't extracting into our own buffer (which only happens when 284341825Sdim // this function is called from ReadRegisterValue(uint32_t, Scalar&)) then 285341825Sdim // we transfer bytes from our buffer into the data buffer that was passed 286341825Sdim // in 287314564Sdim 288314564Sdim data.SetByteOrder(m_reg_data.GetByteOrder()); 289314564Sdim data.SetData(m_reg_data, reg_info->byte_offset, reg_info->byte_size); 290314564Sdim } 291314564Sdim return true; 292254721Semaste} 293254721Semaste 294314564Sdimbool GDBRemoteRegisterContext::WriteRegister(const RegisterInfo *reg_info, 295314564Sdim const RegisterValue &value) { 296314564Sdim DataExtractor data; 297314564Sdim if (value.GetData(data)) 298314564Sdim return WriteRegisterBytes(reg_info, data, 0); 299314564Sdim return false; 300254721Semaste} 301254721Semaste 302254721Semaste// Helper function for GDBRemoteRegisterContext::WriteRegisterBytes(). 303314564Sdimbool GDBRemoteRegisterContext::SetPrimordialRegister( 304314564Sdim const RegisterInfo *reg_info, GDBRemoteCommunicationClient &gdb_comm) { 305314564Sdim StreamString packet; 306314564Sdim StringExtractorGDBRemote response; 307314564Sdim const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 308314564Sdim // Invalidate just this register 309314564Sdim SetRegisterIsValid(reg, false); 310254721Semaste 311314564Sdim return gdb_comm.WriteRegister( 312314564Sdim m_thread.GetProtocolID(), reg_info->kinds[eRegisterKindProcessPlugin], 313314564Sdim {m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size), 314314564Sdim reg_info->byte_size}); 315254721Semaste} 316254721Semaste 317314564Sdimbool GDBRemoteRegisterContext::WriteRegisterBytes(const RegisterInfo *reg_info, 318314564Sdim DataExtractor &data, 319314564Sdim uint32_t data_offset) { 320314564Sdim ExecutionContext exe_ctx(CalculateThread()); 321254721Semaste 322314564Sdim Process *process = exe_ctx.GetProcessPtr(); 323314564Sdim Thread *thread = exe_ctx.GetThreadPtr(); 324353358Sdim if (process == nullptr || thread == nullptr) 325314564Sdim return false; 326254721Semaste 327314564Sdim GDBRemoteCommunicationClient &gdb_comm( 328314564Sdim ((ProcessGDBRemote *)process)->GetGDBRemote()); 329254721Semaste 330314564Sdim assert(m_reg_data.GetByteSize() >= 331314564Sdim reg_info->byte_offset + reg_info->byte_size); 332254721Semaste 333314564Sdim // If our register context and our register info disagree, which should never 334341825Sdim // happen, don't overwrite past the end of the buffer. 335314564Sdim if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size) 336314564Sdim return false; 337254721Semaste 338314564Sdim // Grab a pointer to where we are going to put this register 339314564Sdim uint8_t *dst = const_cast<uint8_t *>( 340314564Sdim m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size)); 341276479Sdim 342353358Sdim if (dst == nullptr) 343314564Sdim return false; 344276479Sdim 345314564Sdim if (data.CopyByteOrderedData(data_offset, // src offset 346314564Sdim reg_info->byte_size, // src length 347314564Sdim dst, // dst 348314564Sdim reg_info->byte_size, // dst length 349314564Sdim m_reg_data.GetByteOrder())) // dst byte order 350314564Sdim { 351314564Sdim GDBRemoteClientBase::Lock lock(gdb_comm, false); 352314564Sdim if (lock) { 353360784Sdim if (m_write_all_at_once) { 354314564Sdim // Invalidate all register values 355314564Sdim InvalidateIfNeeded(true); 356276479Sdim 357314564Sdim // Set all registers in one packet 358314564Sdim if (gdb_comm.WriteAllRegisters( 359314564Sdim m_thread.GetProtocolID(), 360314564Sdim {m_reg_data.GetDataStart(), size_t(m_reg_data.GetByteSize())})) 361254721Semaste 362254721Semaste { 363314564Sdim SetAllRegisterValid(false); 364314564Sdim return true; 365314564Sdim } 366314564Sdim } else { 367314564Sdim bool success = true; 368254721Semaste 369314564Sdim if (reg_info->value_regs) { 370341825Sdim // This register is part of another register. In this case we read 371341825Sdim // the actual register data for any "value_regs", and once all that 372341825Sdim // data is read, we will have enough data in our register context 373341825Sdim // bytes for the value of this register 374254721Semaste 375314564Sdim // Invalidate this composite register first. 376254721Semaste 377314564Sdim for (uint32_t idx = 0; success; ++idx) { 378314564Sdim const uint32_t reg = reg_info->value_regs[idx]; 379314564Sdim if (reg == LLDB_INVALID_REGNUM) 380314564Sdim break; 381341825Sdim // We have a valid primordial register as our constituent. Grab the 382341825Sdim // corresponding register info. 383314564Sdim const RegisterInfo *value_reg_info = GetRegisterInfoAtIndex(reg); 384353358Sdim if (value_reg_info == nullptr) 385314564Sdim success = false; 386314564Sdim else 387314564Sdim success = SetPrimordialRegister(value_reg_info, gdb_comm); 388314564Sdim } 389314564Sdim } else { 390314564Sdim // This is an actual register, write it 391314564Sdim success = SetPrimordialRegister(reg_info, gdb_comm); 392314564Sdim } 393254721Semaste 394314564Sdim // Check if writing this register will invalidate any other register 395341825Sdim // values? If so, invalidate them 396314564Sdim if (reg_info->invalidate_regs) { 397314564Sdim for (uint32_t idx = 0, reg = reg_info->invalidate_regs[0]; 398314564Sdim reg != LLDB_INVALID_REGNUM; 399314564Sdim reg = reg_info->invalidate_regs[++idx]) { 400314564Sdim SetRegisterIsValid(reg, false); 401314564Sdim } 402314564Sdim } 403254721Semaste 404314564Sdim return success; 405314564Sdim } 406314564Sdim } else { 407314564Sdim Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 408314564Sdim GDBR_LOG_PACKETS)); 409314564Sdim if (log) { 410314564Sdim if (log->GetVerbose()) { 411314564Sdim StreamString strm; 412314564Sdim gdb_comm.DumpHistory(strm); 413360784Sdim LLDB_LOGF(log, 414360784Sdim "error: failed to get packet sequence mutex, not sending " 415360784Sdim "write register for \"%s\":\n%s", 416360784Sdim reg_info->name, strm.GetData()); 417314564Sdim } else 418360784Sdim LLDB_LOGF(log, 419360784Sdim "error: failed to get packet sequence mutex, not sending " 420360784Sdim "write register for \"%s\"", 421360784Sdim reg_info->name); 422314564Sdim } 423254721Semaste } 424314564Sdim } 425314564Sdim return false; 426254721Semaste} 427254721Semaste 428314564Sdimbool GDBRemoteRegisterContext::ReadAllRegisterValues( 429314564Sdim RegisterCheckpoint ®_checkpoint) { 430314564Sdim ExecutionContext exe_ctx(CalculateThread()); 431254721Semaste 432314564Sdim Process *process = exe_ctx.GetProcessPtr(); 433314564Sdim Thread *thread = exe_ctx.GetThreadPtr(); 434353358Sdim if (process == nullptr || thread == nullptr) 435314564Sdim return false; 436258884Semaste 437314564Sdim GDBRemoteCommunicationClient &gdb_comm( 438314564Sdim ((ProcessGDBRemote *)process)->GetGDBRemote()); 439314564Sdim 440314564Sdim uint32_t save_id = 0; 441314564Sdim if (gdb_comm.SaveRegisterState(thread->GetProtocolID(), save_id)) { 442314564Sdim reg_checkpoint.SetID(save_id); 443314564Sdim reg_checkpoint.GetData().reset(); 444314564Sdim return true; 445314564Sdim } else { 446314564Sdim reg_checkpoint.SetID(0); // Invalid save ID is zero 447314564Sdim return ReadAllRegisterValues(reg_checkpoint.GetData()); 448314564Sdim } 449258884Semaste} 450258884Semaste 451314564Sdimbool GDBRemoteRegisterContext::WriteAllRegisterValues( 452314564Sdim const RegisterCheckpoint ®_checkpoint) { 453314564Sdim uint32_t save_id = reg_checkpoint.GetID(); 454314564Sdim if (save_id != 0) { 455314564Sdim ExecutionContext exe_ctx(CalculateThread()); 456254721Semaste 457254721Semaste Process *process = exe_ctx.GetProcessPtr(); 458254721Semaste Thread *thread = exe_ctx.GetThreadPtr(); 459353358Sdim if (process == nullptr || thread == nullptr) 460314564Sdim return false; 461254721Semaste 462314564Sdim GDBRemoteCommunicationClient &gdb_comm( 463314564Sdim ((ProcessGDBRemote *)process)->GetGDBRemote()); 464254721Semaste 465314564Sdim return gdb_comm.RestoreRegisterState(m_thread.GetProtocolID(), save_id); 466314564Sdim } else { 467314564Sdim return WriteAllRegisterValues(reg_checkpoint.GetData()); 468314564Sdim } 469314564Sdim} 470254721Semaste 471314564Sdimbool GDBRemoteRegisterContext::ReadAllRegisterValues( 472314564Sdim lldb::DataBufferSP &data_sp) { 473314564Sdim ExecutionContext exe_ctx(CalculateThread()); 474276479Sdim 475314564Sdim Process *process = exe_ctx.GetProcessPtr(); 476314564Sdim Thread *thread = exe_ctx.GetThreadPtr(); 477353358Sdim if (process == nullptr || thread == nullptr) 478314564Sdim return false; 479254721Semaste 480314564Sdim GDBRemoteCommunicationClient &gdb_comm( 481314564Sdim ((ProcessGDBRemote *)process)->GetGDBRemote()); 482276479Sdim 483314564Sdim const bool use_g_packet = 484344779Sdim !gdb_comm.AvoidGPackets((ProcessGDBRemote *)process); 485276479Sdim 486314564Sdim GDBRemoteClientBase::Lock lock(gdb_comm, false); 487314564Sdim if (lock) { 488314564Sdim if (gdb_comm.SyncThreadState(m_thread.GetProtocolID())) 489314564Sdim InvalidateAllRegisters(); 490276479Sdim 491314564Sdim if (use_g_packet && 492314564Sdim (data_sp = gdb_comm.ReadAllRegisters(m_thread.GetProtocolID()))) 493314564Sdim return true; 494314564Sdim 495314564Sdim // We're going to read each register 496314564Sdim // individually and store them as binary data in a buffer. 497314564Sdim const RegisterInfo *reg_info; 498314564Sdim 499353358Sdim for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != nullptr; 500353358Sdim i++) { 501314564Sdim if (reg_info 502314564Sdim ->value_regs) // skip registers that are slices of real registers 503314564Sdim continue; 504314564Sdim ReadRegisterBytes(reg_info, m_reg_data); 505314564Sdim // ReadRegisterBytes saves the contents of the register in to the 506314564Sdim // m_reg_data buffer 507254721Semaste } 508353358Sdim data_sp = std::make_shared<DataBufferHeap>( 509353358Sdim m_reg_data.GetDataStart(), m_reg_info.GetRegisterDataByteSize()); 510314564Sdim return true; 511314564Sdim } else { 512276479Sdim 513314564Sdim Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 514314564Sdim GDBR_LOG_PACKETS)); 515314564Sdim if (log) { 516314564Sdim if (log->GetVerbose()) { 517314564Sdim StreamString strm; 518314564Sdim gdb_comm.DumpHistory(strm); 519360784Sdim LLDB_LOGF(log, 520360784Sdim "error: failed to get packet sequence mutex, not sending " 521360784Sdim "read all registers:\n%s", 522360784Sdim strm.GetData()); 523314564Sdim } else 524360784Sdim LLDB_LOGF(log, 525360784Sdim "error: failed to get packet sequence mutex, not sending " 526360784Sdim "read all registers"); 527254721Semaste } 528314564Sdim } 529254721Semaste 530314564Sdim data_sp.reset(); 531314564Sdim return false; 532254721Semaste} 533254721Semaste 534314564Sdimbool GDBRemoteRegisterContext::WriteAllRegisterValues( 535314564Sdim const lldb::DataBufferSP &data_sp) { 536353358Sdim if (!data_sp || data_sp->GetBytes() == nullptr || data_sp->GetByteSize() == 0) 537314564Sdim return false; 538254721Semaste 539314564Sdim ExecutionContext exe_ctx(CalculateThread()); 540254721Semaste 541314564Sdim Process *process = exe_ctx.GetProcessPtr(); 542314564Sdim Thread *thread = exe_ctx.GetThreadPtr(); 543353358Sdim if (process == nullptr || thread == nullptr) 544314564Sdim return false; 545254721Semaste 546314564Sdim GDBRemoteCommunicationClient &gdb_comm( 547314564Sdim ((ProcessGDBRemote *)process)->GetGDBRemote()); 548254721Semaste 549314564Sdim const bool use_g_packet = 550344779Sdim !gdb_comm.AvoidGPackets((ProcessGDBRemote *)process); 551276479Sdim 552314564Sdim GDBRemoteClientBase::Lock lock(gdb_comm, false); 553314564Sdim if (lock) { 554314564Sdim // The data_sp contains the G response packet. 555314564Sdim if (use_g_packet) { 556314564Sdim if (gdb_comm.WriteAllRegisters( 557314564Sdim m_thread.GetProtocolID(), 558314564Sdim {data_sp->GetBytes(), size_t(data_sp->GetByteSize())})) 559314564Sdim return true; 560254721Semaste 561314564Sdim uint32_t num_restored = 0; 562341825Sdim // We need to manually go through all of the registers and restore them 563341825Sdim // manually 564314564Sdim DataExtractor restore_data(data_sp, m_reg_data.GetByteOrder(), 565314564Sdim m_reg_data.GetAddressByteSize()); 566288943Sdim 567314564Sdim const RegisterInfo *reg_info; 568288943Sdim 569341825Sdim // The g packet contents may either include the slice registers 570341825Sdim // (registers defined in terms of other registers, e.g. eax is a subset 571341825Sdim // of rax) or not. The slice registers should NOT be in the g packet, 572341825Sdim // but some implementations may incorrectly include them. 573314564Sdim // 574314564Sdim // If the slice registers are included in the packet, we must step over 575341825Sdim // the slice registers when parsing the packet -- relying on the 576341825Sdim // RegisterInfo byte_offset field would be incorrect. If the slice 577341825Sdim // registers are not included, then using the byte_offset values into the 578314564Sdim // data buffer is the best way to find individual register values. 579288943Sdim 580314564Sdim uint64_t size_including_slice_registers = 0; 581314564Sdim uint64_t size_not_including_slice_registers = 0; 582314564Sdim uint64_t size_by_highest_offset = 0; 583254721Semaste 584314564Sdim for (uint32_t reg_idx = 0; 585353358Sdim (reg_info = GetRegisterInfoAtIndex(reg_idx)) != nullptr; ++reg_idx) { 586314564Sdim size_including_slice_registers += reg_info->byte_size; 587353358Sdim if (reg_info->value_regs == nullptr) 588314564Sdim size_not_including_slice_registers += reg_info->byte_size; 589314564Sdim if (reg_info->byte_offset >= size_by_highest_offset) 590314564Sdim size_by_highest_offset = reg_info->byte_offset + reg_info->byte_size; 591314564Sdim } 592254721Semaste 593314564Sdim bool use_byte_offset_into_buffer; 594314564Sdim if (size_by_highest_offset == restore_data.GetByteSize()) { 595314564Sdim // The size of the packet agrees with the highest offset: + size in the 596314564Sdim // register file 597314564Sdim use_byte_offset_into_buffer = true; 598314564Sdim } else if (size_not_including_slice_registers == 599314564Sdim restore_data.GetByteSize()) { 600314564Sdim // The size of the packet is the same as concatenating all of the 601341825Sdim // registers sequentially, skipping the slice registers 602314564Sdim use_byte_offset_into_buffer = true; 603314564Sdim } else if (size_including_slice_registers == restore_data.GetByteSize()) { 604314564Sdim // The slice registers are present in the packet (when they shouldn't 605341825Sdim // be). Don't try to use the RegisterInfo byte_offset into the 606341825Sdim // restore_data, it will point to the wrong place. 607314564Sdim use_byte_offset_into_buffer = false; 608314564Sdim } else { 609314564Sdim // None of our expected sizes match the actual g packet data we're 610341825Sdim // looking at. The most conservative approach here is to use the 611341825Sdim // running total byte offset. 612314564Sdim use_byte_offset_into_buffer = false; 613314564Sdim } 614254721Semaste 615314564Sdim // In case our register definitions don't include the correct offsets, 616314564Sdim // keep track of the size of each reg & compute offset based on that. 617314564Sdim uint32_t running_byte_offset = 0; 618314564Sdim for (uint32_t reg_idx = 0; 619353358Sdim (reg_info = GetRegisterInfoAtIndex(reg_idx)) != nullptr; 620314564Sdim ++reg_idx, running_byte_offset += reg_info->byte_size) { 621314564Sdim // Skip composite aka slice registers (e.g. eax is a slice of rax). 622314564Sdim if (reg_info->value_regs) 623314564Sdim continue; 624254721Semaste 625314564Sdim const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; 626254721Semaste 627314564Sdim uint32_t register_offset; 628314564Sdim if (use_byte_offset_into_buffer) { 629314564Sdim register_offset = reg_info->byte_offset; 630314564Sdim } else { 631314564Sdim register_offset = running_byte_offset; 632314564Sdim } 633254721Semaste 634314564Sdim const uint32_t reg_byte_size = reg_info->byte_size; 635276479Sdim 636314564Sdim const uint8_t *restore_src = 637314564Sdim restore_data.PeekData(register_offset, reg_byte_size); 638314564Sdim if (restore_src) { 639314564Sdim SetRegisterIsValid(reg, false); 640314564Sdim if (gdb_comm.WriteRegister( 641314564Sdim m_thread.GetProtocolID(), 642314564Sdim reg_info->kinds[eRegisterKindProcessPlugin], 643314564Sdim {restore_src, reg_byte_size})) 644314564Sdim ++num_restored; 645314564Sdim } 646314564Sdim } 647314564Sdim return num_restored > 0; 648314564Sdim } else { 649314564Sdim // For the use_g_packet == false case, we're going to write each register 650314564Sdim // individually. The data buffer is binary data in this case, instead of 651314564Sdim // ascii characters. 652254721Semaste 653314564Sdim bool arm64_debugserver = false; 654314564Sdim if (m_thread.GetProcess().get()) { 655314564Sdim const ArchSpec &arch = 656314564Sdim m_thread.GetProcess()->GetTarget().GetArchitecture(); 657360784Sdim if (arch.IsValid() && 658360784Sdim (arch.GetMachine() == llvm::Triple::aarch64 || 659360784Sdim arch.GetMachine() == llvm::Triple::aarch64_32) && 660314564Sdim arch.GetTriple().getVendor() == llvm::Triple::Apple && 661314564Sdim arch.GetTriple().getOS() == llvm::Triple::IOS) { 662314564Sdim arm64_debugserver = true; 663254721Semaste } 664314564Sdim } 665314564Sdim uint32_t num_restored = 0; 666314564Sdim const RegisterInfo *reg_info; 667353358Sdim for (uint32_t i = 0; (reg_info = GetRegisterInfoAtIndex(i)) != nullptr; 668314564Sdim i++) { 669314564Sdim if (reg_info->value_regs) // skip registers that are slices of real 670314564Sdim // registers 671314564Sdim continue; 672341825Sdim // Skip the fpsr and fpcr floating point status/control register 673341825Sdim // writing to work around a bug in an older version of debugserver that 674341825Sdim // would lead to register context corruption when writing fpsr/fpcr. 675314564Sdim if (arm64_debugserver && (strcmp(reg_info->name, "fpsr") == 0 || 676314564Sdim strcmp(reg_info->name, "fpcr") == 0)) { 677314564Sdim continue; 678254721Semaste } 679314564Sdim 680314564Sdim SetRegisterIsValid(reg_info, false); 681314564Sdim if (gdb_comm.WriteRegister(m_thread.GetProtocolID(), 682314564Sdim reg_info->kinds[eRegisterKindProcessPlugin], 683314564Sdim {data_sp->GetBytes() + reg_info->byte_offset, 684314564Sdim reg_info->byte_size})) 685314564Sdim ++num_restored; 686314564Sdim } 687314564Sdim return num_restored > 0; 688254721Semaste } 689314564Sdim } else { 690314564Sdim Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_THREAD | 691314564Sdim GDBR_LOG_PACKETS)); 692314564Sdim if (log) { 693314564Sdim if (log->GetVerbose()) { 694314564Sdim StreamString strm; 695314564Sdim gdb_comm.DumpHistory(strm); 696360784Sdim LLDB_LOGF(log, 697360784Sdim "error: failed to get packet sequence mutex, not sending " 698360784Sdim "write all registers:\n%s", 699360784Sdim strm.GetData()); 700314564Sdim } else 701360784Sdim LLDB_LOGF(log, 702360784Sdim "error: failed to get packet sequence mutex, not sending " 703360784Sdim "write all registers"); 704314564Sdim } 705314564Sdim } 706314564Sdim return false; 707254721Semaste} 708254721Semaste 709314564Sdimuint32_t GDBRemoteRegisterContext::ConvertRegisterKindToRegisterNumber( 710314564Sdim lldb::RegisterKind kind, uint32_t num) { 711314564Sdim return m_reg_info.ConvertRegisterKindToRegisterNumber(kind, num); 712254721Semaste} 713254721Semaste 714314564Sdimvoid GDBRemoteDynamicRegisterInfo::HardcodeARMRegisters(bool from_scratch) { 715314564Sdim // For Advanced SIMD and VFP register mapping. 716314564Sdim static uint32_t g_d0_regs[] = {26, 27, LLDB_INVALID_REGNUM}; // (s0, s1) 717314564Sdim static uint32_t g_d1_regs[] = {28, 29, LLDB_INVALID_REGNUM}; // (s2, s3) 718314564Sdim static uint32_t g_d2_regs[] = {30, 31, LLDB_INVALID_REGNUM}; // (s4, s5) 719314564Sdim static uint32_t g_d3_regs[] = {32, 33, LLDB_INVALID_REGNUM}; // (s6, s7) 720314564Sdim static uint32_t g_d4_regs[] = {34, 35, LLDB_INVALID_REGNUM}; // (s8, s9) 721314564Sdim static uint32_t g_d5_regs[] = {36, 37, LLDB_INVALID_REGNUM}; // (s10, s11) 722314564Sdim static uint32_t g_d6_regs[] = {38, 39, LLDB_INVALID_REGNUM}; // (s12, s13) 723314564Sdim static uint32_t g_d7_regs[] = {40, 41, LLDB_INVALID_REGNUM}; // (s14, s15) 724314564Sdim static uint32_t g_d8_regs[] = {42, 43, LLDB_INVALID_REGNUM}; // (s16, s17) 725314564Sdim static uint32_t g_d9_regs[] = {44, 45, LLDB_INVALID_REGNUM}; // (s18, s19) 726314564Sdim static uint32_t g_d10_regs[] = {46, 47, LLDB_INVALID_REGNUM}; // (s20, s21) 727314564Sdim static uint32_t g_d11_regs[] = {48, 49, LLDB_INVALID_REGNUM}; // (s22, s23) 728314564Sdim static uint32_t g_d12_regs[] = {50, 51, LLDB_INVALID_REGNUM}; // (s24, s25) 729314564Sdim static uint32_t g_d13_regs[] = {52, 53, LLDB_INVALID_REGNUM}; // (s26, s27) 730314564Sdim static uint32_t g_d14_regs[] = {54, 55, LLDB_INVALID_REGNUM}; // (s28, s29) 731314564Sdim static uint32_t g_d15_regs[] = {56, 57, LLDB_INVALID_REGNUM}; // (s30, s31) 732314564Sdim static uint32_t g_q0_regs[] = { 733314564Sdim 26, 27, 28, 29, LLDB_INVALID_REGNUM}; // (d0, d1) -> (s0, s1, s2, s3) 734314564Sdim static uint32_t g_q1_regs[] = { 735314564Sdim 30, 31, 32, 33, LLDB_INVALID_REGNUM}; // (d2, d3) -> (s4, s5, s6, s7) 736314564Sdim static uint32_t g_q2_regs[] = { 737314564Sdim 34, 35, 36, 37, LLDB_INVALID_REGNUM}; // (d4, d5) -> (s8, s9, s10, s11) 738314564Sdim static uint32_t g_q3_regs[] = { 739314564Sdim 38, 39, 40, 41, LLDB_INVALID_REGNUM}; // (d6, d7) -> (s12, s13, s14, s15) 740314564Sdim static uint32_t g_q4_regs[] = { 741314564Sdim 42, 43, 44, 45, LLDB_INVALID_REGNUM}; // (d8, d9) -> (s16, s17, s18, s19) 742314564Sdim static uint32_t g_q5_regs[] = { 743314564Sdim 46, 47, 48, 49, 744314564Sdim LLDB_INVALID_REGNUM}; // (d10, d11) -> (s20, s21, s22, s23) 745314564Sdim static uint32_t g_q6_regs[] = { 746314564Sdim 50, 51, 52, 53, 747314564Sdim LLDB_INVALID_REGNUM}; // (d12, d13) -> (s24, s25, s26, s27) 748314564Sdim static uint32_t g_q7_regs[] = { 749314564Sdim 54, 55, 56, 57, 750314564Sdim LLDB_INVALID_REGNUM}; // (d14, d15) -> (s28, s29, s30, s31) 751314564Sdim static uint32_t g_q8_regs[] = {59, 60, LLDB_INVALID_REGNUM}; // (d16, d17) 752314564Sdim static uint32_t g_q9_regs[] = {61, 62, LLDB_INVALID_REGNUM}; // (d18, d19) 753314564Sdim static uint32_t g_q10_regs[] = {63, 64, LLDB_INVALID_REGNUM}; // (d20, d21) 754314564Sdim static uint32_t g_q11_regs[] = {65, 66, LLDB_INVALID_REGNUM}; // (d22, d23) 755314564Sdim static uint32_t g_q12_regs[] = {67, 68, LLDB_INVALID_REGNUM}; // (d24, d25) 756314564Sdim static uint32_t g_q13_regs[] = {69, 70, LLDB_INVALID_REGNUM}; // (d26, d27) 757314564Sdim static uint32_t g_q14_regs[] = {71, 72, LLDB_INVALID_REGNUM}; // (d28, d29) 758314564Sdim static uint32_t g_q15_regs[] = {73, 74, LLDB_INVALID_REGNUM}; // (d30, d31) 759258054Semaste 760341825Sdim // This is our array of composite registers, with each element coming from 761341825Sdim // the above register mappings. 762314564Sdim static uint32_t *g_composites[] = { 763314564Sdim g_d0_regs, g_d1_regs, g_d2_regs, g_d3_regs, g_d4_regs, g_d5_regs, 764314564Sdim g_d6_regs, g_d7_regs, g_d8_regs, g_d9_regs, g_d10_regs, g_d11_regs, 765314564Sdim g_d12_regs, g_d13_regs, g_d14_regs, g_d15_regs, g_q0_regs, g_q1_regs, 766314564Sdim g_q2_regs, g_q3_regs, g_q4_regs, g_q5_regs, g_q6_regs, g_q7_regs, 767314564Sdim g_q8_regs, g_q9_regs, g_q10_regs, g_q11_regs, g_q12_regs, g_q13_regs, 768314564Sdim g_q14_regs, g_q15_regs}; 769254721Semaste 770314564Sdim // clang-format off 771254721Semaste static RegisterInfo g_register_infos[] = { 772314564Sdim// NAME ALT SZ OFF ENCODING FORMAT EH_FRAME DWARF GENERIC PROCESS PLUGIN LLDB VALUE REGS INVALIDATE REGS SIZE EXPR SIZE LEN 773314564Sdim// ====== ====== === === ============= ========== =================== =================== ====================== ============= ==== ========== =============== ========= ======== 774314564Sdim { "r0", "arg1", 4, 0, eEncodingUint, eFormatHex, { ehframe_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1,0, 0 }, nullptr, nullptr, nullptr, 0 }, 775314564Sdim { "r1", "arg2", 4, 0, eEncodingUint, eFormatHex, { ehframe_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2,1, 1 }, nullptr, nullptr, nullptr, 0 }, 776314564Sdim { "r2", "arg3", 4, 0, eEncodingUint, eFormatHex, { ehframe_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3,2, 2 }, nullptr, nullptr, nullptr, 0 }, 777314564Sdim { "r3", "arg4", 4, 0, eEncodingUint, eFormatHex, { ehframe_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4,3, 3 }, nullptr, nullptr, nullptr, 0 }, 778314564Sdim { "r4", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r4, dwarf_r4, LLDB_INVALID_REGNUM, 4, 4 }, nullptr, nullptr, nullptr, 0 }, 779314564Sdim { "r5", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r5, dwarf_r5, LLDB_INVALID_REGNUM, 5, 5 }, nullptr, nullptr, nullptr, 0 }, 780314564Sdim { "r6", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r6, dwarf_r6, LLDB_INVALID_REGNUM, 6, 6 }, nullptr, nullptr, nullptr, 0 }, 781314564Sdim { "r7", "fp", 4, 0, eEncodingUint, eFormatHex, { ehframe_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, 7, 7 }, nullptr, nullptr, nullptr, 0 }, 782314564Sdim { "r8", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r8, dwarf_r8, LLDB_INVALID_REGNUM, 8, 8 }, nullptr, nullptr, nullptr, 0 }, 783314564Sdim { "r9", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r9, dwarf_r9, LLDB_INVALID_REGNUM, 9, 9 }, nullptr, nullptr, nullptr, 0 }, 784314564Sdim { "r10", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r10, dwarf_r10, LLDB_INVALID_REGNUM, 10, 10 }, nullptr, nullptr, nullptr, 0 }, 785314564Sdim { "r11", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r11, dwarf_r11, LLDB_INVALID_REGNUM, 11, 11 }, nullptr, nullptr, nullptr, 0 }, 786314564Sdim { "r12", nullptr, 4, 0, eEncodingUint, eFormatHex, { ehframe_r12, dwarf_r12, LLDB_INVALID_REGNUM, 12, 12 }, nullptr, nullptr, nullptr, 0 }, 787314564Sdim { "sp", "r13", 4, 0, eEncodingUint, eFormatHex, { ehframe_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, 13, 13 }, nullptr, nullptr, nullptr, 0 }, 788314564Sdim { "lr", "r14", 4, 0, eEncodingUint, eFormatHex, { ehframe_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, 14, 14 }, nullptr, nullptr, nullptr, 0 }, 789314564Sdim { "pc", "r15", 4, 0, eEncodingUint, eFormatHex, { ehframe_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, 15, 15 }, nullptr, nullptr, nullptr, 0 }, 790314564Sdim { "f0", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 16, 16 }, nullptr, nullptr, nullptr, 0 }, 791314564Sdim { "f1", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 17, 17 }, nullptr, nullptr, nullptr, 0 }, 792314564Sdim { "f2", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 18, 18 }, nullptr, nullptr, nullptr, 0 }, 793314564Sdim { "f3", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 19, 19 }, nullptr, nullptr, nullptr, 0 }, 794314564Sdim { "f4", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 20, 20 }, nullptr, nullptr, nullptr, 0 }, 795314564Sdim { "f5", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 21, 21 }, nullptr, nullptr, nullptr, 0 }, 796314564Sdim { "f6", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 22, 22 }, nullptr, nullptr, nullptr, 0 }, 797314564Sdim { "f7", nullptr, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 23, 23 }, nullptr, nullptr, nullptr, 0 }, 798314564Sdim { "fps", nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 24, 24 }, nullptr, nullptr, nullptr, 0 }, 799314564Sdim { "cpsr","flags", 4, 0, eEncodingUint, eFormatHex, { ehframe_cpsr, dwarf_cpsr, LLDB_INVALID_REGNUM, 25, 25 }, nullptr, nullptr, nullptr, 0 }, 800314564Sdim { "s0", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, 26, 26 }, nullptr, nullptr, nullptr, 0 }, 801314564Sdim { "s1", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, 27, 27 }, nullptr, nullptr, nullptr, 0 }, 802314564Sdim { "s2", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, 28, 28 }, nullptr, nullptr, nullptr, 0 }, 803314564Sdim { "s3", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, 29, 29 }, nullptr, nullptr, nullptr, 0 }, 804314564Sdim { "s4", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, 30, 30 }, nullptr, nullptr, nullptr, 0 }, 805314564Sdim { "s5", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, 31, 31 }, nullptr, nullptr, nullptr, 0 }, 806314564Sdim { "s6", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, 32, 32 }, nullptr, nullptr, nullptr, 0 }, 807314564Sdim { "s7", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, 33, 33 }, nullptr, nullptr, nullptr, 0 }, 808314564Sdim { "s8", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, 34, 34 }, nullptr, nullptr, nullptr, 0 }, 809314564Sdim { "s9", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, 35, 35 }, nullptr, nullptr, nullptr, 0 }, 810314564Sdim { "s10", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, 36, 36 }, nullptr, nullptr, nullptr, 0 }, 811314564Sdim { "s11", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, 37, 37 }, nullptr, nullptr, nullptr, 0 }, 812314564Sdim { "s12", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, 38, 38 }, nullptr, nullptr, nullptr, 0 }, 813314564Sdim { "s13", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, 39, 39 }, nullptr, nullptr, nullptr, 0 }, 814314564Sdim { "s14", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, 40, 40 }, nullptr, nullptr, nullptr, 0 }, 815314564Sdim { "s15", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, 41, 41 }, nullptr, nullptr, nullptr, 0 }, 816314564Sdim { "s16", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, 42, 42 }, nullptr, nullptr, nullptr, 0 }, 817314564Sdim { "s17", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, 43, 43 }, nullptr, nullptr, nullptr, 0 }, 818314564Sdim { "s18", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, 44, 44 }, nullptr, nullptr, nullptr, 0 }, 819314564Sdim { "s19", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, 45, 45 }, nullptr, nullptr, nullptr, 0 }, 820314564Sdim { "s20", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, 46, 46 }, nullptr, nullptr, nullptr, 0 }, 821314564Sdim { "s21", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, 47, 47 }, nullptr, nullptr, nullptr, 0 }, 822314564Sdim { "s22", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, 48, 48 }, nullptr, nullptr, nullptr, 0 }, 823314564Sdim { "s23", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, 49, 49 }, nullptr, nullptr, nullptr, 0 }, 824314564Sdim { "s24", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, 50, 50 }, nullptr, nullptr, nullptr, 0 }, 825314564Sdim { "s25", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, 51, 51 }, nullptr, nullptr, nullptr, 0 }, 826314564Sdim { "s26", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, 52, 52 }, nullptr, nullptr, nullptr, 0 }, 827314564Sdim { "s27", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, 53, 53 }, nullptr, nullptr, nullptr, 0 }, 828314564Sdim { "s28", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, 54, 54 }, nullptr, nullptr, nullptr, 0 }, 829314564Sdim { "s29", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, 55, 55 }, nullptr, nullptr, nullptr, 0 }, 830314564Sdim { "s30", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, 56, 56 }, nullptr, nullptr, nullptr, 0 }, 831314564Sdim { "s31", nullptr, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, 57, 57 }, nullptr, nullptr, nullptr, 0 }, 832314564Sdim { "fpscr",nullptr, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 58, 58 }, nullptr, nullptr, nullptr, 0 }, 833314564Sdim { "d16", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, 59, 59 }, nullptr, nullptr, nullptr, 0 }, 834314564Sdim { "d17", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, 60, 60 }, nullptr, nullptr, nullptr, 0 }, 835314564Sdim { "d18", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, 61, 61 }, nullptr, nullptr, nullptr, 0 }, 836314564Sdim { "d19", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, 62, 62 }, nullptr, nullptr, nullptr, 0 }, 837314564Sdim { "d20", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, 63, 63 }, nullptr, nullptr, nullptr, 0 }, 838314564Sdim { "d21", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, 64, 64 }, nullptr, nullptr, nullptr, 0 }, 839314564Sdim { "d22", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, 65, 65 }, nullptr, nullptr, nullptr, 0 }, 840314564Sdim { "d23", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, 66, 66 }, nullptr, nullptr, nullptr, 0 }, 841314564Sdim { "d24", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, 67, 67 }, nullptr, nullptr, nullptr, 0 }, 842314564Sdim { "d25", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, 68, 68 }, nullptr, nullptr, nullptr, 0 }, 843314564Sdim { "d26", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, 69, 69 }, nullptr, nullptr, nullptr, 0 }, 844314564Sdim { "d27", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, 70, 70 }, nullptr, nullptr, nullptr, 0 }, 845314564Sdim { "d28", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, 71, 71 }, nullptr, nullptr, nullptr, 0 }, 846314564Sdim { "d29", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, 72, 72 }, nullptr, nullptr, nullptr, 0 }, 847314564Sdim { "d30", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, 73, 73 }, nullptr, nullptr, nullptr, 0 }, 848314564Sdim { "d31", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, 74, 74 }, nullptr, nullptr, nullptr, 0 }, 849314564Sdim { "d0", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, 75, 75 }, g_d0_regs, nullptr, nullptr, 0 }, 850314564Sdim { "d1", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, 76, 76 }, g_d1_regs, nullptr, nullptr, 0 }, 851314564Sdim { "d2", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, 77, 77 }, g_d2_regs, nullptr, nullptr, 0 }, 852314564Sdim { "d3", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, 78, 78 }, g_d3_regs, nullptr, nullptr, 0 }, 853314564Sdim { "d4", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, 79, 79 }, g_d4_regs, nullptr, nullptr, 0 }, 854314564Sdim { "d5", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, 80, 80 }, g_d5_regs, nullptr, nullptr, 0 }, 855314564Sdim { "d6", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, 81, 81 }, g_d6_regs, nullptr, nullptr, 0 }, 856314564Sdim { "d7", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, 82, 82 }, g_d7_regs, nullptr, nullptr, 0 }, 857314564Sdim { "d8", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, 83, 83 }, g_d8_regs, nullptr, nullptr, 0 }, 858314564Sdim { "d9", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, 84, 84 }, g_d9_regs, nullptr, nullptr, 0 }, 859314564Sdim { "d10", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, 85, 85 }, g_d10_regs, nullptr, nullptr, 0 }, 860314564Sdim { "d11", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, 86, 86 }, g_d11_regs, nullptr, nullptr, 0 }, 861314564Sdim { "d12", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, 87, 87 }, g_d12_regs, nullptr, nullptr, 0 }, 862314564Sdim { "d13", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, 88, 88 }, g_d13_regs, nullptr, nullptr, 0 }, 863314564Sdim { "d14", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, 89, 89 }, g_d14_regs, nullptr, nullptr, 0 }, 864314564Sdim { "d15", nullptr, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, 90, 90 }, g_d15_regs, nullptr, nullptr, 0 }, 865314564Sdim { "q0", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q0, LLDB_INVALID_REGNUM, 91, 91 }, g_q0_regs, nullptr, nullptr, 0 }, 866314564Sdim { "q1", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q1, LLDB_INVALID_REGNUM, 92, 92 }, g_q1_regs, nullptr, nullptr, 0 }, 867314564Sdim { "q2", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q2, LLDB_INVALID_REGNUM, 93, 93 }, g_q2_regs, nullptr, nullptr, 0 }, 868314564Sdim { "q3", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q3, LLDB_INVALID_REGNUM, 94, 94 }, g_q3_regs, nullptr, nullptr, 0 }, 869314564Sdim { "q4", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q4, LLDB_INVALID_REGNUM, 95, 95 }, g_q4_regs, nullptr, nullptr, 0 }, 870314564Sdim { "q5", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q5, LLDB_INVALID_REGNUM, 96, 96 }, g_q5_regs, nullptr, nullptr, 0 }, 871314564Sdim { "q6", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q6, LLDB_INVALID_REGNUM, 97, 97 }, g_q6_regs, nullptr, nullptr, 0 }, 872314564Sdim { "q7", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q7, LLDB_INVALID_REGNUM, 98, 98 }, g_q7_regs, nullptr, nullptr, 0 }, 873314564Sdim { "q8", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q8, LLDB_INVALID_REGNUM, 99, 99 }, g_q8_regs, nullptr, nullptr, 0 }, 874314564Sdim { "q9", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q9, LLDB_INVALID_REGNUM, 100, 100 }, g_q9_regs, nullptr, nullptr, 0 }, 875314564Sdim { "q10", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q10, LLDB_INVALID_REGNUM, 101, 101 }, g_q10_regs, nullptr, nullptr, 0 }, 876314564Sdim { "q11", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q11, LLDB_INVALID_REGNUM, 102, 102 }, g_q11_regs, nullptr, nullptr, 0 }, 877314564Sdim { "q12", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q12, LLDB_INVALID_REGNUM, 103, 103 }, g_q12_regs, nullptr, nullptr, 0 }, 878314564Sdim { "q13", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q13, LLDB_INVALID_REGNUM, 104, 104 }, g_q13_regs, nullptr, nullptr, 0 }, 879314564Sdim { "q14", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q14, LLDB_INVALID_REGNUM, 105, 105 }, g_q14_regs, nullptr, nullptr, 0 }, 880314564Sdim { "q15", nullptr, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q15, LLDB_INVALID_REGNUM, 106, 106 }, g_q15_regs, nullptr, nullptr, 0 } 881254721Semaste }; 882314564Sdim // clang-format on 883254721Semaste 884314564Sdim static const uint32_t num_registers = llvm::array_lengthof(g_register_infos); 885314564Sdim static ConstString gpr_reg_set("General Purpose Registers"); 886314564Sdim static ConstString sfp_reg_set("Software Floating Point Registers"); 887314564Sdim static ConstString vfp_reg_set("Floating Point Registers"); 888314564Sdim size_t i; 889314564Sdim if (from_scratch) { 890314564Sdim // Calculate the offsets of the registers 891314564Sdim // Note that the layout of the "composite" registers (d0-d15 and q0-q15) 892341825Sdim // which comes after the "primordial" registers is important. This enables 893341825Sdim // us to calculate the offset of the composite register by using the offset 894341825Sdim // of its first primordial register. For example, to calculate the offset 895341825Sdim // of q0, use s0's offset. 896314564Sdim if (g_register_infos[2].byte_offset == 0) { 897314564Sdim uint32_t byte_offset = 0; 898314564Sdim for (i = 0; i < num_registers; ++i) { 899314564Sdim // For primordial registers, increment the byte_offset by the byte_size 900341825Sdim // to arrive at the byte_offset for the next register. Otherwise, we 901341825Sdim // have a composite register whose offset can be calculated by 902341825Sdim // consulting the offset of its first primordial register. 903314564Sdim if (!g_register_infos[i].value_regs) { 904314564Sdim g_register_infos[i].byte_offset = byte_offset; 905314564Sdim byte_offset += g_register_infos[i].byte_size; 906314564Sdim } else { 907314564Sdim const uint32_t first_primordial_reg = 908314564Sdim g_register_infos[i].value_regs[0]; 909314564Sdim g_register_infos[i].byte_offset = 910314564Sdim g_register_infos[first_primordial_reg].byte_offset; 911254721Semaste } 912314564Sdim } 913314564Sdim } 914314564Sdim for (i = 0; i < num_registers; ++i) { 915314564Sdim ConstString name; 916314564Sdim ConstString alt_name; 917314564Sdim if (g_register_infos[i].name && g_register_infos[i].name[0]) 918314564Sdim name.SetCString(g_register_infos[i].name); 919314564Sdim if (g_register_infos[i].alt_name && g_register_infos[i].alt_name[0]) 920314564Sdim alt_name.SetCString(g_register_infos[i].alt_name); 921254721Semaste 922314564Sdim if (i <= 15 || i == 25) 923314564Sdim AddRegister(g_register_infos[i], name, alt_name, gpr_reg_set); 924314564Sdim else if (i <= 24) 925314564Sdim AddRegister(g_register_infos[i], name, alt_name, sfp_reg_set); 926314564Sdim else 927314564Sdim AddRegister(g_register_infos[i], name, alt_name, vfp_reg_set); 928254721Semaste } 929314564Sdim } else { 930314564Sdim // Add composite registers to our primordial registers, then. 931314564Sdim const size_t num_composites = llvm::array_lengthof(g_composites); 932314564Sdim const size_t num_dynamic_regs = GetNumRegisters(); 933314564Sdim const size_t num_common_regs = num_registers - num_composites; 934314564Sdim RegisterInfo *g_comp_register_infos = g_register_infos + num_common_regs; 935254721Semaste 936314564Sdim // First we need to validate that all registers that we already have match 937341825Sdim // the non composite regs. If so, then we can add the registers, else we 938341825Sdim // need to bail 939314564Sdim bool match = true; 940314564Sdim if (num_dynamic_regs == num_common_regs) { 941314564Sdim for (i = 0; match && i < num_dynamic_regs; ++i) { 942314564Sdim // Make sure all register names match 943314564Sdim if (m_regs[i].name && g_register_infos[i].name) { 944314564Sdim if (strcmp(m_regs[i].name, g_register_infos[i].name)) { 945254721Semaste match = false; 946314564Sdim break; 947314564Sdim } 948254721Semaste } 949314564Sdim 950314564Sdim // Make sure all register byte sizes match 951314564Sdim if (m_regs[i].byte_size != g_register_infos[i].byte_size) { 952314564Sdim match = false; 953314564Sdim break; 954314564Sdim } 955314564Sdim } 956314564Sdim } else { 957314564Sdim // Wrong number of registers. 958314564Sdim match = false; 959314564Sdim } 960314564Sdim // If "match" is true, then we can add extra registers. 961314564Sdim if (match) { 962314564Sdim for (i = 0; i < num_composites; ++i) { 963314564Sdim ConstString name; 964314564Sdim ConstString alt_name; 965314564Sdim const uint32_t first_primordial_reg = 966314564Sdim g_comp_register_infos[i].value_regs[0]; 967314564Sdim const char *reg_name = g_register_infos[first_primordial_reg].name; 968314564Sdim if (reg_name && reg_name[0]) { 969314564Sdim for (uint32_t j = 0; j < num_dynamic_regs; ++j) { 970314564Sdim const RegisterInfo *reg_info = GetRegisterInfoAtIndex(j); 971314564Sdim // Find a matching primordial register info entry. 972314564Sdim if (reg_info && reg_info->name && 973314564Sdim ::strcasecmp(reg_info->name, reg_name) == 0) { 974341825Sdim // The name matches the existing primordial entry. Find and 975341825Sdim // assign the offset, and then add this composite register entry. 976314564Sdim g_comp_register_infos[i].byte_offset = reg_info->byte_offset; 977314564Sdim name.SetCString(g_comp_register_infos[i].name); 978314564Sdim AddRegister(g_comp_register_infos[i], name, alt_name, 979314564Sdim vfp_reg_set); 980254721Semaste } 981314564Sdim } 982254721Semaste } 983314564Sdim } 984254721Semaste } 985314564Sdim } 986254721Semaste} 987