| File: | tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp |
| Warning: | line 3396, column 7 Value stored to 'error_string' is never read |
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| 1 | //===-- ProcessGDBRemote.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 "lldb/Host/Config.h" |
| 11 | |
| 12 | // C Includes |
| 13 | #include <errno(*__errno_location ()).h> |
| 14 | #include <stdlib.h> |
| 15 | #ifndef LLDB_DISABLE_POSIX |
| 16 | #include <netinet/in.h> |
| 17 | #include <sys/mman.h> // for mmap |
| 18 | #include <sys/socket.h> |
| 19 | #include <unistd.h> |
| 20 | #endif |
| 21 | #include <sys/stat.h> |
| 22 | #include <sys/types.h> |
| 23 | #include <time.h> |
| 24 | |
| 25 | // C++ Includes |
| 26 | #include <algorithm> |
| 27 | #include <csignal> |
| 28 | #include <map> |
| 29 | #include <mutex> |
| 30 | #include <sstream> |
| 31 | |
| 32 | #include "lldb/Breakpoint/Watchpoint.h" |
| 33 | #include "lldb/Core/Debugger.h" |
| 34 | #include "lldb/Core/Module.h" |
| 35 | #include "lldb/Core/ModuleSpec.h" |
| 36 | #include "lldb/Core/PluginManager.h" |
| 37 | #include "lldb/Core/StreamFile.h" |
| 38 | #include "lldb/Core/Value.h" |
| 39 | #include "lldb/DataFormatters/FormatManager.h" |
| 40 | #include "lldb/Host/ConnectionFileDescriptor.h" |
| 41 | #include "lldb/Host/FileSystem.h" |
| 42 | #include "lldb/Host/HostThread.h" |
| 43 | #include "lldb/Host/PosixApi.h" |
| 44 | #include "lldb/Host/PseudoTerminal.h" |
| 45 | #include "lldb/Host/StringConvert.h" |
| 46 | #include "lldb/Host/Symbols.h" |
| 47 | #include "lldb/Host/ThreadLauncher.h" |
| 48 | #include "lldb/Host/XML.h" |
| 49 | #include "lldb/Interpreter/CommandInterpreter.h" |
| 50 | #include "lldb/Interpreter/CommandObject.h" |
| 51 | #include "lldb/Interpreter/CommandObjectMultiword.h" |
| 52 | #include "lldb/Interpreter/CommandReturnObject.h" |
| 53 | #include "lldb/Interpreter/OptionArgParser.h" |
| 54 | #include "lldb/Interpreter/OptionGroupBoolean.h" |
| 55 | #include "lldb/Interpreter/OptionGroupUInt64.h" |
| 56 | #include "lldb/Interpreter/OptionValueProperties.h" |
| 57 | #include "lldb/Interpreter/Options.h" |
| 58 | #include "lldb/Interpreter/Property.h" |
| 59 | #include "lldb/Symbol/ObjectFile.h" |
| 60 | #include "lldb/Target/ABI.h" |
| 61 | #include "lldb/Target/DynamicLoader.h" |
| 62 | #include "lldb/Target/MemoryRegionInfo.h" |
| 63 | #include "lldb/Target/SystemRuntime.h" |
| 64 | #include "lldb/Target/Target.h" |
| 65 | #include "lldb/Target/TargetList.h" |
| 66 | #include "lldb/Target/ThreadPlanCallFunction.h" |
| 67 | #include "lldb/Utility/Args.h" |
| 68 | #include "lldb/Utility/CleanUp.h" |
| 69 | #include "lldb/Utility/FileSpec.h" |
| 70 | #include "lldb/Utility/State.h" |
| 71 | #include "lldb/Utility/StreamString.h" |
| 72 | #include "lldb/Utility/Timer.h" |
| 73 | |
| 74 | // Project includes |
| 75 | #include "GDBRemoteRegisterContext.h" |
| 76 | #include "Plugins/Platform/MacOSX/PlatformRemoteiOS.h" |
| 77 | #include "Plugins/Process/Utility/GDBRemoteSignals.h" |
| 78 | #include "Plugins/Process/Utility/InferiorCallPOSIX.h" |
| 79 | #include "Plugins/Process/Utility/StopInfoMachException.h" |
| 80 | #include "ProcessGDBRemote.h" |
| 81 | #include "ProcessGDBRemoteLog.h" |
| 82 | #include "ThreadGDBRemote.h" |
| 83 | #include "lldb/Host/Host.h" |
| 84 | #include "lldb/Utility/StringExtractorGDBRemote.h" |
| 85 | |
| 86 | #include "llvm/ADT/StringSwitch.h" |
| 87 | #include "llvm/Support/Threading.h" |
| 88 | #include "llvm/Support/raw_ostream.h" |
| 89 | |
| 90 | #define DEBUGSERVER_BASENAME"debugserver" "debugserver" |
| 91 | using namespace lldb; |
| 92 | using namespace lldb_private; |
| 93 | using namespace lldb_private::process_gdb_remote; |
| 94 | |
| 95 | namespace lldb { |
| 96 | // Provide a function that can easily dump the packet history if we know a |
| 97 | // ProcessGDBRemote * value (which we can get from logs or from debugging). We |
| 98 | // need the function in the lldb namespace so it makes it into the final |
| 99 | // executable since the LLDB shared library only exports stuff in the lldb |
| 100 | // namespace. This allows you to attach with a debugger and call this function |
| 101 | // and get the packet history dumped to a file. |
| 102 | void DumpProcessGDBRemotePacketHistory(void *p, const char *path) { |
| 103 | StreamFile strm; |
| 104 | Status error(strm.GetFile().Open(path, File::eOpenOptionWrite | |
| 105 | File::eOpenOptionCanCreate)); |
| 106 | if (error.Success()) |
| 107 | ((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory(strm); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | namespace { |
| 112 | |
| 113 | static constexpr PropertyDefinition g_properties[] = { |
| 114 | {"packet-timeout", OptionValue::eTypeUInt64, true, 1, NULL__null, {}, |
| 115 | "Specify the default packet timeout in seconds."}, |
| 116 | {"target-definition-file", OptionValue::eTypeFileSpec, true, 0, NULL__null, {}, |
| 117 | "The file that provides the description for remote target registers."}}; |
| 118 | |
| 119 | enum { ePropertyPacketTimeout, ePropertyTargetDefinitionFile }; |
| 120 | |
| 121 | class PluginProperties : public Properties { |
| 122 | public: |
| 123 | static ConstString GetSettingName() { |
| 124 | return ProcessGDBRemote::GetPluginNameStatic(); |
| 125 | } |
| 126 | |
| 127 | PluginProperties() : Properties() { |
| 128 | m_collection_sp.reset(new OptionValueProperties(GetSettingName())); |
| 129 | m_collection_sp->Initialize(g_properties); |
| 130 | } |
| 131 | |
| 132 | virtual ~PluginProperties() {} |
| 133 | |
| 134 | uint64_t GetPacketTimeout() { |
| 135 | const uint32_t idx = ePropertyPacketTimeout; |
| 136 | return m_collection_sp->GetPropertyAtIndexAsUInt64( |
| 137 | NULL__null, idx, g_properties[idx].default_uint_value); |
| 138 | } |
| 139 | |
| 140 | bool SetPacketTimeout(uint64_t timeout) { |
| 141 | const uint32_t idx = ePropertyPacketTimeout; |
| 142 | return m_collection_sp->SetPropertyAtIndexAsUInt64(NULL__null, idx, timeout); |
| 143 | } |
| 144 | |
| 145 | FileSpec GetTargetDefinitionFile() const { |
| 146 | const uint32_t idx = ePropertyTargetDefinitionFile; |
| 147 | return m_collection_sp->GetPropertyAtIndexAsFileSpec(NULL__null, idx); |
| 148 | } |
| 149 | }; |
| 150 | |
| 151 | typedef std::shared_ptr<PluginProperties> ProcessKDPPropertiesSP; |
| 152 | |
| 153 | static const ProcessKDPPropertiesSP &GetGlobalPluginProperties() { |
| 154 | static ProcessKDPPropertiesSP g_settings_sp; |
| 155 | if (!g_settings_sp) |
| 156 | g_settings_sp.reset(new PluginProperties()); |
| 157 | return g_settings_sp; |
| 158 | } |
| 159 | |
| 160 | } // anonymous namespace end |
| 161 | |
| 162 | // TODO Randomly assigning a port is unsafe. We should get an unused |
| 163 | // ephemeral port from the kernel and make sure we reserve it before passing it |
| 164 | // to debugserver. |
| 165 | |
| 166 | #if defined(__APPLE__) |
| 167 | #define LOW_PORT(1024u) (IPPORT_RESERVED) |
| 168 | #define HIGH_PORT(49151u) (IPPORT_HIFIRSTAUTO) |
| 169 | #else |
| 170 | #define LOW_PORT(1024u) (1024u) |
| 171 | #define HIGH_PORT(49151u) (49151u) |
| 172 | #endif |
| 173 | |
| 174 | #if defined(__APPLE__) && \ |
| 175 | (defined(__arm__) || defined(__arm64__) || defined(__aarch64__)) |
| 176 | static bool rand_initialized = false; |
| 177 | |
| 178 | static inline uint16_t get_random_port() { |
| 179 | if (!rand_initialized) { |
| 180 | time_t seed = time(NULL__null); |
| 181 | |
| 182 | rand_initialized = true; |
| 183 | srand(seed); |
| 184 | } |
| 185 | return (rand() % (HIGH_PORT(49151u) - LOW_PORT(1024u))) + LOW_PORT(1024u); |
| 186 | } |
| 187 | #endif |
| 188 | |
| 189 | ConstString ProcessGDBRemote::GetPluginNameStatic() { |
| 190 | static ConstString g_name("gdb-remote"); |
| 191 | return g_name; |
| 192 | } |
| 193 | |
| 194 | const char *ProcessGDBRemote::GetPluginDescriptionStatic() { |
| 195 | return "GDB Remote protocol based debugging plug-in."; |
| 196 | } |
| 197 | |
| 198 | void ProcessGDBRemote::Terminate() { |
| 199 | PluginManager::UnregisterPlugin(ProcessGDBRemote::CreateInstance); |
| 200 | } |
| 201 | |
| 202 | lldb::ProcessSP |
| 203 | ProcessGDBRemote::CreateInstance(lldb::TargetSP target_sp, |
| 204 | ListenerSP listener_sp, |
| 205 | const FileSpec *crash_file_path) { |
| 206 | lldb::ProcessSP process_sp; |
| 207 | if (crash_file_path == NULL__null) |
| 208 | process_sp.reset(new ProcessGDBRemote(target_sp, listener_sp)); |
| 209 | return process_sp; |
| 210 | } |
| 211 | |
| 212 | bool ProcessGDBRemote::CanDebug(lldb::TargetSP target_sp, |
| 213 | bool plugin_specified_by_name) { |
| 214 | if (plugin_specified_by_name) |
| 215 | return true; |
| 216 | |
| 217 | // For now we are just making sure the file exists for a given module |
| 218 | Module *exe_module = target_sp->GetExecutableModulePointer(); |
| 219 | if (exe_module) { |
| 220 | ObjectFile *exe_objfile = exe_module->GetObjectFile(); |
| 221 | // We can't debug core files... |
| 222 | switch (exe_objfile->GetType()) { |
| 223 | case ObjectFile::eTypeInvalid: |
| 224 | case ObjectFile::eTypeCoreFile: |
| 225 | case ObjectFile::eTypeDebugInfo: |
| 226 | case ObjectFile::eTypeObjectFile: |
| 227 | case ObjectFile::eTypeSharedLibrary: |
| 228 | case ObjectFile::eTypeStubLibrary: |
| 229 | case ObjectFile::eTypeJIT: |
| 230 | return false; |
| 231 | case ObjectFile::eTypeExecutable: |
| 232 | case ObjectFile::eTypeDynamicLinker: |
| 233 | case ObjectFile::eTypeUnknown: |
| 234 | break; |
| 235 | } |
| 236 | return exe_module->GetFileSpec().Exists(); |
| 237 | } |
| 238 | // However, if there is no executable module, we return true since we might |
| 239 | // be preparing to attach. |
| 240 | return true; |
| 241 | } |
| 242 | |
| 243 | //---------------------------------------------------------------------- |
| 244 | // ProcessGDBRemote constructor |
| 245 | //---------------------------------------------------------------------- |
| 246 | ProcessGDBRemote::ProcessGDBRemote(lldb::TargetSP target_sp, |
| 247 | ListenerSP listener_sp) |
| 248 | : Process(target_sp, listener_sp), |
| 249 | m_debugserver_pid(LLDB_INVALID_PROCESS_ID0), m_last_stop_packet_mutex(), |
| 250 | m_register_info(), |
| 251 | m_async_broadcaster(NULL__null, "lldb.process.gdb-remote.async-broadcaster"), |
| 252 | m_async_listener_sp( |
| 253 | Listener::MakeListener("lldb.process.gdb-remote.async-listener")), |
| 254 | m_async_thread_state_mutex(), m_thread_ids(), m_thread_pcs(), |
| 255 | m_jstopinfo_sp(), m_jthreadsinfo_sp(), m_continue_c_tids(), |
| 256 | m_continue_C_tids(), m_continue_s_tids(), m_continue_S_tids(), |
| 257 | m_max_memory_size(0), m_remote_stub_max_memory_size(0), |
| 258 | m_addr_to_mmap_size(), m_thread_create_bp_sp(), |
| 259 | m_waiting_for_attach(false), m_destroy_tried_resuming(false), |
| 260 | m_command_sp(), m_breakpoint_pc_offset(0), |
| 261 | m_initial_tid(LLDB_INVALID_THREAD_ID0), m_allow_flash_writes(false), |
| 262 | m_erased_flash_ranges() { |
| 263 | m_async_broadcaster.SetEventName(eBroadcastBitAsyncThreadShouldExit, |
| 264 | "async thread should exit"); |
| 265 | m_async_broadcaster.SetEventName(eBroadcastBitAsyncContinue, |
| 266 | "async thread continue"); |
| 267 | m_async_broadcaster.SetEventName(eBroadcastBitAsyncThreadDidExit, |
| 268 | "async thread did exit"); |
| 269 | |
| 270 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_ASYNC(1u << 11))); |
| 271 | |
| 272 | const uint32_t async_event_mask = |
| 273 | eBroadcastBitAsyncContinue | eBroadcastBitAsyncThreadShouldExit; |
| 274 | |
| 275 | if (m_async_listener_sp->StartListeningForEvents( |
| 276 | &m_async_broadcaster, async_event_mask) != async_event_mask) { |
| 277 | if (log) |
| 278 | log->Printf("ProcessGDBRemote::%s failed to listen for " |
| 279 | "m_async_broadcaster events", |
| 280 | __FUNCTION__); |
| 281 | } |
| 282 | |
| 283 | const uint32_t gdb_event_mask = |
| 284 | Communication::eBroadcastBitReadThreadDidExit | |
| 285 | GDBRemoteCommunication::eBroadcastBitGdbReadThreadGotNotify; |
| 286 | if (m_async_listener_sp->StartListeningForEvents( |
| 287 | &m_gdb_comm, gdb_event_mask) != gdb_event_mask) { |
| 288 | if (log) |
| 289 | log->Printf("ProcessGDBRemote::%s failed to listen for m_gdb_comm events", |
| 290 | __FUNCTION__); |
| 291 | } |
| 292 | |
| 293 | const uint64_t timeout_seconds = |
| 294 | GetGlobalPluginProperties()->GetPacketTimeout(); |
| 295 | if (timeout_seconds > 0) |
| 296 | m_gdb_comm.SetPacketTimeout(std::chrono::seconds(timeout_seconds)); |
| 297 | } |
| 298 | |
| 299 | //---------------------------------------------------------------------- |
| 300 | // Destructor |
| 301 | //---------------------------------------------------------------------- |
| 302 | ProcessGDBRemote::~ProcessGDBRemote() { |
| 303 | // m_mach_process.UnregisterNotificationCallbacks (this); |
| 304 | Clear(); |
| 305 | // We need to call finalize on the process before destroying ourselves to |
| 306 | // make sure all of the broadcaster cleanup goes as planned. If we destruct |
| 307 | // this class, then Process::~Process() might have problems trying to fully |
| 308 | // destroy the broadcaster. |
| 309 | Finalize(); |
| 310 | |
| 311 | // The general Finalize is going to try to destroy the process and that |
| 312 | // SHOULD shut down the async thread. However, if we don't kill it it will |
| 313 | // get stranded and its connection will go away so when it wakes up it will |
| 314 | // crash. So kill it for sure here. |
| 315 | StopAsyncThread(); |
| 316 | KillDebugserverProcess(); |
| 317 | } |
| 318 | |
| 319 | //---------------------------------------------------------------------- |
| 320 | // PluginInterface |
| 321 | //---------------------------------------------------------------------- |
| 322 | ConstString ProcessGDBRemote::GetPluginName() { return GetPluginNameStatic(); } |
| 323 | |
| 324 | uint32_t ProcessGDBRemote::GetPluginVersion() { return 1; } |
| 325 | |
| 326 | bool ProcessGDBRemote::ParsePythonTargetDefinition( |
| 327 | const FileSpec &target_definition_fspec) { |
| 328 | ScriptInterpreter *interpreter = |
| 329 | GetTarget().GetDebugger().GetCommandInterpreter().GetScriptInterpreter(); |
| 330 | Status error; |
| 331 | StructuredData::ObjectSP module_object_sp( |
| 332 | interpreter->LoadPluginModule(target_definition_fspec, error)); |
| 333 | if (module_object_sp) { |
| 334 | StructuredData::DictionarySP target_definition_sp( |
| 335 | interpreter->GetDynamicSettings(module_object_sp, &GetTarget(), |
| 336 | "gdb-server-target-definition", error)); |
| 337 | |
| 338 | if (target_definition_sp) { |
| 339 | StructuredData::ObjectSP target_object( |
| 340 | target_definition_sp->GetValueForKey("host-info")); |
| 341 | if (target_object) { |
| 342 | if (auto host_info_dict = target_object->GetAsDictionary()) { |
| 343 | StructuredData::ObjectSP triple_value = |
| 344 | host_info_dict->GetValueForKey("triple"); |
| 345 | if (auto triple_string_value = triple_value->GetAsString()) { |
| 346 | std::string triple_string = triple_string_value->GetValue(); |
| 347 | ArchSpec host_arch(triple_string.c_str()); |
| 348 | if (!host_arch.IsCompatibleMatch(GetTarget().GetArchitecture())) { |
| 349 | GetTarget().SetArchitecture(host_arch); |
| 350 | } |
| 351 | } |
| 352 | } |
| 353 | } |
| 354 | m_breakpoint_pc_offset = 0; |
| 355 | StructuredData::ObjectSP breakpoint_pc_offset_value = |
| 356 | target_definition_sp->GetValueForKey("breakpoint-pc-offset"); |
| 357 | if (breakpoint_pc_offset_value) { |
| 358 | if (auto breakpoint_pc_int_value = |
| 359 | breakpoint_pc_offset_value->GetAsInteger()) |
| 360 | m_breakpoint_pc_offset = breakpoint_pc_int_value->GetValue(); |
| 361 | } |
| 362 | |
| 363 | if (m_register_info.SetRegisterInfo(*target_definition_sp, |
| 364 | GetTarget().GetArchitecture()) > 0) { |
| 365 | return true; |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | return false; |
| 370 | } |
| 371 | |
| 372 | // If the remote stub didn't give us eh_frame or DWARF register numbers for a |
| 373 | // register, see if the ABI can provide them. |
| 374 | // DWARF and eh_frame register numbers are defined as a part of the ABI. |
| 375 | static void AugmentRegisterInfoViaABI(RegisterInfo ®_info, |
| 376 | ConstString reg_name, ABISP abi_sp) { |
| 377 | if (reg_info.kinds[eRegisterKindEHFrame] == LLDB_INVALID_REGNUM(4294967295U) || |
| 378 | reg_info.kinds[eRegisterKindDWARF] == LLDB_INVALID_REGNUM(4294967295U)) { |
| 379 | if (abi_sp) { |
| 380 | RegisterInfo abi_reg_info; |
| 381 | if (abi_sp->GetRegisterInfoByName(reg_name, abi_reg_info)) { |
| 382 | if (reg_info.kinds[eRegisterKindEHFrame] == LLDB_INVALID_REGNUM(4294967295U) && |
| 383 | abi_reg_info.kinds[eRegisterKindEHFrame] != LLDB_INVALID_REGNUM(4294967295U)) { |
| 384 | reg_info.kinds[eRegisterKindEHFrame] = |
| 385 | abi_reg_info.kinds[eRegisterKindEHFrame]; |
| 386 | } |
| 387 | if (reg_info.kinds[eRegisterKindDWARF] == LLDB_INVALID_REGNUM(4294967295U) && |
| 388 | abi_reg_info.kinds[eRegisterKindDWARF] != LLDB_INVALID_REGNUM(4294967295U)) { |
| 389 | reg_info.kinds[eRegisterKindDWARF] = |
| 390 | abi_reg_info.kinds[eRegisterKindDWARF]; |
| 391 | } |
| 392 | if (reg_info.kinds[eRegisterKindGeneric] == LLDB_INVALID_REGNUM(4294967295U) && |
| 393 | abi_reg_info.kinds[eRegisterKindGeneric] != LLDB_INVALID_REGNUM(4294967295U)) { |
| 394 | reg_info.kinds[eRegisterKindGeneric] = |
| 395 | abi_reg_info.kinds[eRegisterKindGeneric]; |
| 396 | } |
| 397 | } |
| 398 | } |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | static size_t SplitCommaSeparatedRegisterNumberString( |
| 403 | const llvm::StringRef &comma_separated_regiter_numbers, |
| 404 | std::vector<uint32_t> ®nums, int base) { |
| 405 | regnums.clear(); |
| 406 | std::pair<llvm::StringRef, llvm::StringRef> value_pair; |
| 407 | value_pair.second = comma_separated_regiter_numbers; |
| 408 | do { |
| 409 | value_pair = value_pair.second.split(','); |
| 410 | if (!value_pair.first.empty()) { |
| 411 | uint32_t reg = StringConvert::ToUInt32(value_pair.first.str().c_str(), |
| 412 | LLDB_INVALID_REGNUM(4294967295U), base); |
| 413 | if (reg != LLDB_INVALID_REGNUM(4294967295U)) |
| 414 | regnums.push_back(reg); |
| 415 | } |
| 416 | } while (!value_pair.second.empty()); |
| 417 | return regnums.size(); |
| 418 | } |
| 419 | |
| 420 | void ProcessGDBRemote::BuildDynamicRegisterInfo(bool force) { |
| 421 | if (!force && m_register_info.GetNumRegisters() > 0) |
| 422 | return; |
| 423 | |
| 424 | m_register_info.Clear(); |
| 425 | |
| 426 | // Check if qHostInfo specified a specific packet timeout for this |
| 427 | // connection. If so then lets update our setting so the user knows what the |
| 428 | // timeout is and can see it. |
| 429 | const auto host_packet_timeout = m_gdb_comm.GetHostDefaultPacketTimeout(); |
| 430 | if (host_packet_timeout > std::chrono::seconds(0)) { |
| 431 | GetGlobalPluginProperties()->SetPacketTimeout(host_packet_timeout.count()); |
| 432 | } |
| 433 | |
| 434 | // Register info search order: |
| 435 | // 1 - Use the target definition python file if one is specified. |
| 436 | // 2 - If the target definition doesn't have any of the info from the |
| 437 | // target.xml (registers) then proceed to read the target.xml. |
| 438 | // 3 - Fall back on the qRegisterInfo packets. |
| 439 | |
| 440 | FileSpec target_definition_fspec = |
| 441 | GetGlobalPluginProperties()->GetTargetDefinitionFile(); |
| 442 | if (!target_definition_fspec.Exists()) { |
| 443 | // If the filename doesn't exist, it may be a ~ not having been expanded - |
| 444 | // try to resolve it. |
| 445 | target_definition_fspec.ResolvePath(); |
| 446 | } |
| 447 | if (target_definition_fspec) { |
| 448 | // See if we can get register definitions from a python file |
| 449 | if (ParsePythonTargetDefinition(target_definition_fspec)) { |
| 450 | return; |
| 451 | } else { |
| 452 | StreamSP stream_sp = GetTarget().GetDebugger().GetAsyncOutputStream(); |
| 453 | stream_sp->Printf("ERROR: target description file %s failed to parse.\n", |
| 454 | target_definition_fspec.GetPath().c_str()); |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | const ArchSpec &target_arch = GetTarget().GetArchitecture(); |
| 459 | const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture(); |
| 460 | const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); |
| 461 | |
| 462 | // Use the process' architecture instead of the host arch, if available |
| 463 | ArchSpec arch_to_use; |
| 464 | if (remote_process_arch.IsValid()) |
| 465 | arch_to_use = remote_process_arch; |
| 466 | else |
| 467 | arch_to_use = remote_host_arch; |
| 468 | |
| 469 | if (!arch_to_use.IsValid()) |
| 470 | arch_to_use = target_arch; |
| 471 | |
| 472 | if (GetGDBServerRegisterInfo(arch_to_use)) |
| 473 | return; |
| 474 | |
| 475 | char packet[128]; |
| 476 | uint32_t reg_offset = 0; |
| 477 | uint32_t reg_num = 0; |
| 478 | for (StringExtractorGDBRemote::ResponseType response_type = |
| 479 | StringExtractorGDBRemote::eResponse; |
| 480 | response_type == StringExtractorGDBRemote::eResponse; ++reg_num) { |
| 481 | const int packet_len = |
| 482 | ::snprintf(packet, sizeof(packet), "qRegisterInfo%x", reg_num); |
| 483 | assert(packet_len < (int)sizeof(packet))((packet_len < (int)sizeof(packet)) ? static_cast<void> (0) : __assert_fail ("packet_len < (int)sizeof(packet)", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 483, __PRETTY_FUNCTION__)); |
| 484 | UNUSED_IF_ASSERT_DISABLED(packet_len)((void)(packet_len)); |
| 485 | StringExtractorGDBRemote response; |
| 486 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet, response, false) == |
| 487 | GDBRemoteCommunication::PacketResult::Success) { |
| 488 | response_type = response.GetResponseType(); |
| 489 | if (response_type == StringExtractorGDBRemote::eResponse) { |
| 490 | llvm::StringRef name; |
| 491 | llvm::StringRef value; |
| 492 | ConstString reg_name; |
| 493 | ConstString alt_name; |
| 494 | ConstString set_name; |
| 495 | std::vector<uint32_t> value_regs; |
| 496 | std::vector<uint32_t> invalidate_regs; |
| 497 | std::vector<uint8_t> dwarf_opcode_bytes; |
| 498 | RegisterInfo reg_info = { |
| 499 | NULL__null, // Name |
| 500 | NULL__null, // Alt name |
| 501 | 0, // byte size |
| 502 | reg_offset, // offset |
| 503 | eEncodingUint, // encoding |
| 504 | eFormatHex, // format |
| 505 | { |
| 506 | LLDB_INVALID_REGNUM(4294967295U), // eh_frame reg num |
| 507 | LLDB_INVALID_REGNUM(4294967295U), // DWARF reg num |
| 508 | LLDB_INVALID_REGNUM(4294967295U), // generic reg num |
| 509 | reg_num, // process plugin reg num |
| 510 | reg_num // native register number |
| 511 | }, |
| 512 | NULL__null, |
| 513 | NULL__null, |
| 514 | NULL__null, // Dwarf expression opcode bytes pointer |
| 515 | 0 // Dwarf expression opcode bytes length |
| 516 | }; |
| 517 | |
| 518 | while (response.GetNameColonValue(name, value)) { |
| 519 | if (name.equals("name")) { |
| 520 | reg_name.SetString(value); |
| 521 | } else if (name.equals("alt-name")) { |
| 522 | alt_name.SetString(value); |
| 523 | } else if (name.equals("bitsize")) { |
| 524 | value.getAsInteger(0, reg_info.byte_size); |
| 525 | reg_info.byte_size /= CHAR_BIT8; |
| 526 | } else if (name.equals("offset")) { |
| 527 | if (value.getAsInteger(0, reg_offset)) |
| 528 | reg_offset = UINT32_MAX(4294967295U); |
| 529 | } else if (name.equals("encoding")) { |
| 530 | const Encoding encoding = Args::StringToEncoding(value); |
| 531 | if (encoding != eEncodingInvalid) |
| 532 | reg_info.encoding = encoding; |
| 533 | } else if (name.equals("format")) { |
| 534 | Format format = eFormatInvalid; |
| 535 | if (OptionArgParser::ToFormat(value.str().c_str(), format, NULL__null) |
| 536 | .Success()) |
| 537 | reg_info.format = format; |
| 538 | else { |
| 539 | reg_info.format = |
| 540 | llvm::StringSwitch<Format>(value) |
| 541 | .Case("binary", eFormatBinary) |
| 542 | .Case("decimal", eFormatDecimal) |
| 543 | .Case("hex", eFormatHex) |
| 544 | .Case("float", eFormatFloat) |
| 545 | .Case("vector-sint8", eFormatVectorOfSInt8) |
| 546 | .Case("vector-uint8", eFormatVectorOfUInt8) |
| 547 | .Case("vector-sint16", eFormatVectorOfSInt16) |
| 548 | .Case("vector-uint16", eFormatVectorOfUInt16) |
| 549 | .Case("vector-sint32", eFormatVectorOfSInt32) |
| 550 | .Case("vector-uint32", eFormatVectorOfUInt32) |
| 551 | .Case("vector-float32", eFormatVectorOfFloat32) |
| 552 | .Case("vector-uint64", eFormatVectorOfUInt64) |
| 553 | .Case("vector-uint128", eFormatVectorOfUInt128) |
| 554 | .Default(eFormatInvalid); |
| 555 | } |
| 556 | } else if (name.equals("set")) { |
| 557 | set_name.SetString(value); |
| 558 | } else if (name.equals("gcc") || name.equals("ehframe")) { |
| 559 | if (value.getAsInteger(0, reg_info.kinds[eRegisterKindEHFrame])) |
| 560 | reg_info.kinds[eRegisterKindEHFrame] = LLDB_INVALID_REGNUM(4294967295U); |
| 561 | } else if (name.equals("dwarf")) { |
| 562 | if (value.getAsInteger(0, reg_info.kinds[eRegisterKindDWARF])) |
| 563 | reg_info.kinds[eRegisterKindDWARF] = LLDB_INVALID_REGNUM(4294967295U); |
| 564 | } else if (name.equals("generic")) { |
| 565 | reg_info.kinds[eRegisterKindGeneric] = |
| 566 | Args::StringToGenericRegister(value); |
| 567 | } else if (name.equals("container-regs")) { |
| 568 | SplitCommaSeparatedRegisterNumberString(value, value_regs, 16); |
| 569 | } else if (name.equals("invalidate-regs")) { |
| 570 | SplitCommaSeparatedRegisterNumberString(value, invalidate_regs, 16); |
| 571 | } else if (name.equals("dynamic_size_dwarf_expr_bytes")) { |
| 572 | size_t dwarf_opcode_len = value.size() / 2; |
| 573 | assert(dwarf_opcode_len > 0)((dwarf_opcode_len > 0) ? static_cast<void> (0) : __assert_fail ("dwarf_opcode_len > 0", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 573, __PRETTY_FUNCTION__)); |
| 574 | |
| 575 | dwarf_opcode_bytes.resize(dwarf_opcode_len); |
| 576 | reg_info.dynamic_size_dwarf_len = dwarf_opcode_len; |
| 577 | |
| 578 | StringExtractor opcode_extractor(value); |
| 579 | uint32_t ret_val = |
| 580 | opcode_extractor.GetHexBytesAvail(dwarf_opcode_bytes); |
| 581 | assert(dwarf_opcode_len == ret_val)((dwarf_opcode_len == ret_val) ? static_cast<void> (0) : __assert_fail ("dwarf_opcode_len == ret_val", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 581, __PRETTY_FUNCTION__)); |
| 582 | UNUSED_IF_ASSERT_DISABLED(ret_val)((void)(ret_val)); |
| 583 | reg_info.dynamic_size_dwarf_expr_bytes = dwarf_opcode_bytes.data(); |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | reg_info.byte_offset = reg_offset; |
| 588 | assert(reg_info.byte_size != 0)((reg_info.byte_size != 0) ? static_cast<void> (0) : __assert_fail ("reg_info.byte_size != 0", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 588, __PRETTY_FUNCTION__)); |
| 589 | reg_offset += reg_info.byte_size; |
| 590 | if (!value_regs.empty()) { |
| 591 | value_regs.push_back(LLDB_INVALID_REGNUM(4294967295U)); |
| 592 | reg_info.value_regs = value_regs.data(); |
| 593 | } |
| 594 | if (!invalidate_regs.empty()) { |
| 595 | invalidate_regs.push_back(LLDB_INVALID_REGNUM(4294967295U)); |
| 596 | reg_info.invalidate_regs = invalidate_regs.data(); |
| 597 | } |
| 598 | |
| 599 | // We have to make a temporary ABI here, and not use the GetABI because |
| 600 | // this code gets called in DidAttach, when the target architecture |
| 601 | // (and consequently the ABI we'll get from the process) may be wrong. |
| 602 | ABISP abi_to_use = ABI::FindPlugin(shared_from_this(), arch_to_use); |
| 603 | |
| 604 | AugmentRegisterInfoViaABI(reg_info, reg_name, abi_to_use); |
| 605 | |
| 606 | m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name); |
| 607 | } else { |
| 608 | break; // ensure exit before reg_num is incremented |
| 609 | } |
| 610 | } else { |
| 611 | break; |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | if (m_register_info.GetNumRegisters() > 0) { |
| 616 | m_register_info.Finalize(GetTarget().GetArchitecture()); |
| 617 | return; |
| 618 | } |
| 619 | |
| 620 | // We didn't get anything if the accumulated reg_num is zero. See if we are |
| 621 | // debugging ARM and fill with a hard coded register set until we can get an |
| 622 | // updated debugserver down on the devices. On the other hand, if the |
| 623 | // accumulated reg_num is positive, see if we can add composite registers to |
| 624 | // the existing primordial ones. |
| 625 | bool from_scratch = (m_register_info.GetNumRegisters() == 0); |
| 626 | |
| 627 | if (!target_arch.IsValid()) { |
| 628 | if (arch_to_use.IsValid() && |
| 629 | (arch_to_use.GetMachine() == llvm::Triple::arm || |
| 630 | arch_to_use.GetMachine() == llvm::Triple::thumb) && |
| 631 | arch_to_use.GetTriple().getVendor() == llvm::Triple::Apple) |
| 632 | m_register_info.HardcodeARMRegisters(from_scratch); |
| 633 | } else if (target_arch.GetMachine() == llvm::Triple::arm || |
| 634 | target_arch.GetMachine() == llvm::Triple::thumb) { |
| 635 | m_register_info.HardcodeARMRegisters(from_scratch); |
| 636 | } |
| 637 | |
| 638 | // At this point, we can finalize our register info. |
| 639 | m_register_info.Finalize(GetTarget().GetArchitecture()); |
| 640 | } |
| 641 | |
| 642 | Status ProcessGDBRemote::WillLaunch(Module *module) { |
| 643 | return WillLaunchOrAttach(); |
| 644 | } |
| 645 | |
| 646 | Status ProcessGDBRemote::WillAttachToProcessWithID(lldb::pid_t pid) { |
| 647 | return WillLaunchOrAttach(); |
| 648 | } |
| 649 | |
| 650 | Status ProcessGDBRemote::WillAttachToProcessWithName(const char *process_name, |
| 651 | bool wait_for_launch) { |
| 652 | return WillLaunchOrAttach(); |
| 653 | } |
| 654 | |
| 655 | Status ProcessGDBRemote::DoConnectRemote(Stream *strm, |
| 656 | llvm::StringRef remote_url) { |
| 657 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 658 | Status error(WillLaunchOrAttach()); |
| 659 | |
| 660 | if (error.Fail()) |
| 661 | return error; |
| 662 | |
| 663 | error = ConnectToDebugserver(remote_url); |
| 664 | |
| 665 | if (error.Fail()) |
| 666 | return error; |
| 667 | StartAsyncThread(); |
| 668 | |
| 669 | lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID(); |
| 670 | if (pid == LLDB_INVALID_PROCESS_ID0) { |
| 671 | // We don't have a valid process ID, so note that we are connected and |
| 672 | // could now request to launch or attach, or get remote process listings... |
| 673 | SetPrivateState(eStateConnected); |
| 674 | } else { |
| 675 | // We have a valid process |
| 676 | SetID(pid); |
| 677 | GetThreadList(); |
| 678 | StringExtractorGDBRemote response; |
| 679 | if (m_gdb_comm.GetStopReply(response)) { |
| 680 | SetLastStopPacket(response); |
| 681 | |
| 682 | // '?' Packets must be handled differently in non-stop mode |
| 683 | if (GetTarget().GetNonStopModeEnabled()) |
| 684 | HandleStopReplySequence(); |
| 685 | |
| 686 | Target &target = GetTarget(); |
| 687 | if (!target.GetArchitecture().IsValid()) { |
| 688 | if (m_gdb_comm.GetProcessArchitecture().IsValid()) { |
| 689 | target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); |
| 690 | } else { |
| 691 | if (m_gdb_comm.GetHostArchitecture().IsValid()) { |
| 692 | target.SetArchitecture(m_gdb_comm.GetHostArchitecture()); |
| 693 | } |
| 694 | } |
| 695 | } |
| 696 | |
| 697 | const StateType state = SetThreadStopInfo(response); |
| 698 | if (state != eStateInvalid) { |
| 699 | SetPrivateState(state); |
| 700 | } else |
| 701 | error.SetErrorStringWithFormat( |
| 702 | "Process %" PRIu64"l" "u" " was reported after connecting to " |
| 703 | "'%s', but state was not stopped: %s", |
| 704 | pid, remote_url.str().c_str(), StateAsCString(state)); |
| 705 | } else |
| 706 | error.SetErrorStringWithFormat("Process %" PRIu64"l" "u" |
| 707 | " was reported after connecting to '%s', " |
| 708 | "but no stop reply packet was received", |
| 709 | pid, remote_url.str().c_str()); |
| 710 | } |
| 711 | |
| 712 | if (log) |
| 713 | log->Printf("ProcessGDBRemote::%s pid %" PRIu64"l" "u" |
| 714 | ": normalizing target architecture initial triple: %s " |
| 715 | "(GetTarget().GetArchitecture().IsValid() %s, " |
| 716 | "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", |
| 717 | __FUNCTION__, GetID(), |
| 718 | GetTarget().GetArchitecture().GetTriple().getTriple().c_str(), |
| 719 | GetTarget().GetArchitecture().IsValid() ? "true" : "false", |
| 720 | m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); |
| 721 | |
| 722 | if (error.Success() && !GetTarget().GetArchitecture().IsValid() && |
| 723 | m_gdb_comm.GetHostArchitecture().IsValid()) { |
| 724 | // Prefer the *process'* architecture over that of the *host*, if |
| 725 | // available. |
| 726 | if (m_gdb_comm.GetProcessArchitecture().IsValid()) |
| 727 | GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture()); |
| 728 | else |
| 729 | GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture()); |
| 730 | } |
| 731 | |
| 732 | if (log) |
| 733 | log->Printf("ProcessGDBRemote::%s pid %" PRIu64"l" "u" |
| 734 | ": normalized target architecture triple: %s", |
| 735 | __FUNCTION__, GetID(), |
| 736 | GetTarget().GetArchitecture().GetTriple().getTriple().c_str()); |
| 737 | |
| 738 | if (error.Success()) { |
| 739 | PlatformSP platform_sp = GetTarget().GetPlatform(); |
| 740 | if (platform_sp && platform_sp->IsConnected()) |
| 741 | SetUnixSignals(platform_sp->GetUnixSignals()); |
| 742 | else |
| 743 | SetUnixSignals(UnixSignals::Create(GetTarget().GetArchitecture())); |
| 744 | } |
| 745 | |
| 746 | return error; |
| 747 | } |
| 748 | |
| 749 | Status ProcessGDBRemote::WillLaunchOrAttach() { |
| 750 | Status error; |
| 751 | m_stdio_communication.Clear(); |
| 752 | return error; |
| 753 | } |
| 754 | |
| 755 | //---------------------------------------------------------------------- |
| 756 | // Process Control |
| 757 | //---------------------------------------------------------------------- |
| 758 | Status ProcessGDBRemote::DoLaunch(Module *exe_module, |
| 759 | ProcessLaunchInfo &launch_info) { |
| 760 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 761 | Status error; |
| 762 | |
| 763 | if (log) |
| 764 | log->Printf("ProcessGDBRemote::%s() entered", __FUNCTION__); |
| 765 | |
| 766 | uint32_t launch_flags = launch_info.GetFlags().Get(); |
| 767 | FileSpec stdin_file_spec{}; |
| 768 | FileSpec stdout_file_spec{}; |
| 769 | FileSpec stderr_file_spec{}; |
| 770 | FileSpec working_dir = launch_info.GetWorkingDirectory(); |
| 771 | |
| 772 | const FileAction *file_action; |
| 773 | file_action = launch_info.GetFileActionForFD(STDIN_FILENO0); |
| 774 | if (file_action) { |
| 775 | if (file_action->GetAction() == FileAction::eFileActionOpen) |
| 776 | stdin_file_spec = file_action->GetFileSpec(); |
| 777 | } |
| 778 | file_action = launch_info.GetFileActionForFD(STDOUT_FILENO1); |
| 779 | if (file_action) { |
| 780 | if (file_action->GetAction() == FileAction::eFileActionOpen) |
| 781 | stdout_file_spec = file_action->GetFileSpec(); |
| 782 | } |
| 783 | file_action = launch_info.GetFileActionForFD(STDERR_FILENO2); |
| 784 | if (file_action) { |
| 785 | if (file_action->GetAction() == FileAction::eFileActionOpen) |
| 786 | stderr_file_spec = file_action->GetFileSpec(); |
| 787 | } |
| 788 | |
| 789 | if (log) { |
| 790 | if (stdin_file_spec || stdout_file_spec || stderr_file_spec) |
| 791 | log->Printf("ProcessGDBRemote::%s provided with STDIO paths via " |
| 792 | "launch_info: stdin=%s, stdout=%s, stderr=%s", |
| 793 | __FUNCTION__, |
| 794 | stdin_file_spec ? stdin_file_spec.GetCString() : "<null>", |
| 795 | stdout_file_spec ? stdout_file_spec.GetCString() : "<null>", |
| 796 | stderr_file_spec ? stderr_file_spec.GetCString() : "<null>"); |
| 797 | else |
| 798 | log->Printf("ProcessGDBRemote::%s no STDIO paths given via launch_info", |
| 799 | __FUNCTION__); |
| 800 | } |
| 801 | |
| 802 | const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; |
| 803 | if (stdin_file_spec || disable_stdio) { |
| 804 | // the inferior will be reading stdin from the specified file or stdio is |
| 805 | // completely disabled |
| 806 | m_stdin_forward = false; |
| 807 | } else { |
| 808 | m_stdin_forward = true; |
| 809 | } |
| 810 | |
| 811 | // ::LogSetBitMask (GDBR_LOG_DEFAULT); |
| 812 | // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | |
| 813 | // LLDB_LOG_OPTION_PREPEND_TIMESTAMP | |
| 814 | // LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); |
| 815 | // ::LogSetLogFile ("/dev/stdout"); |
| 816 | |
| 817 | ObjectFile *object_file = exe_module->GetObjectFile(); |
| 818 | if (object_file) { |
| 819 | error = EstablishConnectionIfNeeded(launch_info); |
| 820 | if (error.Success()) { |
| 821 | PseudoTerminal pty; |
| 822 | const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; |
| 823 | |
| 824 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
| 825 | if (disable_stdio) { |
| 826 | // set to /dev/null unless redirected to a file above |
| 827 | if (!stdin_file_spec) |
| 828 | stdin_file_spec.SetFile(FileSystem::DEV_NULL, false, |
| 829 | FileSpec::Style::native); |
| 830 | if (!stdout_file_spec) |
| 831 | stdout_file_spec.SetFile(FileSystem::DEV_NULL, false, |
| 832 | FileSpec::Style::native); |
| 833 | if (!stderr_file_spec) |
| 834 | stderr_file_spec.SetFile(FileSystem::DEV_NULL, false, |
| 835 | FileSpec::Style::native); |
| 836 | } else if (platform_sp && platform_sp->IsHost()) { |
| 837 | // If the debugserver is local and we aren't disabling STDIO, lets use |
| 838 | // a pseudo terminal to instead of relying on the 'O' packets for stdio |
| 839 | // since 'O' packets can really slow down debugging if the inferior |
| 840 | // does a lot of output. |
| 841 | if ((!stdin_file_spec || !stdout_file_spec || !stderr_file_spec) && |
| 842 | pty.OpenFirstAvailableMaster(O_RDWR02 | O_NOCTTY0400, NULL__null, 0)) { |
| 843 | FileSpec slave_name{pty.GetSlaveName(NULL__null, 0), false}; |
| 844 | |
| 845 | if (!stdin_file_spec) |
| 846 | stdin_file_spec = slave_name; |
| 847 | |
| 848 | if (!stdout_file_spec) |
| 849 | stdout_file_spec = slave_name; |
| 850 | |
| 851 | if (!stderr_file_spec) |
| 852 | stderr_file_spec = slave_name; |
| 853 | } |
| 854 | if (log) |
| 855 | log->Printf( |
| 856 | "ProcessGDBRemote::%s adjusted STDIO paths for local platform " |
| 857 | "(IsHost() is true) using slave: stdin=%s, stdout=%s, stderr=%s", |
| 858 | __FUNCTION__, |
| 859 | stdin_file_spec ? stdin_file_spec.GetCString() : "<null>", |
| 860 | stdout_file_spec ? stdout_file_spec.GetCString() : "<null>", |
| 861 | stderr_file_spec ? stderr_file_spec.GetCString() : "<null>"); |
| 862 | } |
| 863 | |
| 864 | if (log) |
| 865 | log->Printf("ProcessGDBRemote::%s final STDIO paths after all " |
| 866 | "adjustments: stdin=%s, stdout=%s, stderr=%s", |
| 867 | __FUNCTION__, |
| 868 | stdin_file_spec ? stdin_file_spec.GetCString() : "<null>", |
| 869 | stdout_file_spec ? stdout_file_spec.GetCString() : "<null>", |
| 870 | stderr_file_spec ? stderr_file_spec.GetCString() |
| 871 | : "<null>"); |
| 872 | |
| 873 | if (stdin_file_spec) |
| 874 | m_gdb_comm.SetSTDIN(stdin_file_spec); |
| 875 | if (stdout_file_spec) |
| 876 | m_gdb_comm.SetSTDOUT(stdout_file_spec); |
| 877 | if (stderr_file_spec) |
| 878 | m_gdb_comm.SetSTDERR(stderr_file_spec); |
| 879 | |
| 880 | m_gdb_comm.SetDisableASLR(launch_flags & eLaunchFlagDisableASLR); |
| 881 | m_gdb_comm.SetDetachOnError(launch_flags & eLaunchFlagDetachOnError); |
| 882 | |
| 883 | m_gdb_comm.SendLaunchArchPacket( |
| 884 | GetTarget().GetArchitecture().GetArchitectureName()); |
| 885 | |
| 886 | const char *launch_event_data = launch_info.GetLaunchEventData(); |
| 887 | if (launch_event_data != NULL__null && *launch_event_data != '\0') |
| 888 | m_gdb_comm.SendLaunchEventDataPacket(launch_event_data); |
| 889 | |
| 890 | if (working_dir) { |
| 891 | m_gdb_comm.SetWorkingDir(working_dir); |
| 892 | } |
| 893 | |
| 894 | // Send the environment and the program + arguments after we connect |
| 895 | m_gdb_comm.SendEnvironment(launch_info.GetEnvironment()); |
| 896 | |
| 897 | { |
| 898 | // Scope for the scoped timeout object |
| 899 | GDBRemoteCommunication::ScopedTimeout timeout(m_gdb_comm, |
| 900 | std::chrono::seconds(10)); |
| 901 | |
| 902 | int arg_packet_err = m_gdb_comm.SendArgumentsPacket(launch_info); |
| 903 | if (arg_packet_err == 0) { |
| 904 | std::string error_str; |
| 905 | if (m_gdb_comm.GetLaunchSuccess(error_str)) { |
| 906 | SetID(m_gdb_comm.GetCurrentProcessID()); |
| 907 | } else { |
| 908 | error.SetErrorString(error_str.c_str()); |
| 909 | } |
| 910 | } else { |
| 911 | error.SetErrorStringWithFormat("'A' packet returned an error: %i", |
| 912 | arg_packet_err); |
| 913 | } |
| 914 | } |
| 915 | |
| 916 | if (GetID() == LLDB_INVALID_PROCESS_ID0) { |
| 917 | if (log) |
| 918 | log->Printf("failed to connect to debugserver: %s", |
| 919 | error.AsCString()); |
| 920 | KillDebugserverProcess(); |
| 921 | return error; |
| 922 | } |
| 923 | |
| 924 | StringExtractorGDBRemote response; |
| 925 | if (m_gdb_comm.GetStopReply(response)) { |
| 926 | SetLastStopPacket(response); |
| 927 | // '?' Packets must be handled differently in non-stop mode |
| 928 | if (GetTarget().GetNonStopModeEnabled()) |
| 929 | HandleStopReplySequence(); |
| 930 | |
| 931 | const ArchSpec &process_arch = m_gdb_comm.GetProcessArchitecture(); |
| 932 | |
| 933 | if (process_arch.IsValid()) { |
| 934 | GetTarget().MergeArchitecture(process_arch); |
| 935 | } else { |
| 936 | const ArchSpec &host_arch = m_gdb_comm.GetHostArchitecture(); |
| 937 | if (host_arch.IsValid()) |
| 938 | GetTarget().MergeArchitecture(host_arch); |
| 939 | } |
| 940 | |
| 941 | SetPrivateState(SetThreadStopInfo(response)); |
| 942 | |
| 943 | if (!disable_stdio) { |
| 944 | if (pty.GetMasterFileDescriptor() != PseudoTerminal::invalid_fd) |
| 945 | SetSTDIOFileDescriptor(pty.ReleaseMasterFileDescriptor()); |
| 946 | } |
| 947 | } |
| 948 | } else { |
| 949 | if (log) |
| 950 | log->Printf("failed to connect to debugserver: %s", error.AsCString()); |
| 951 | } |
| 952 | } else { |
| 953 | // Set our user ID to an invalid process ID. |
| 954 | SetID(LLDB_INVALID_PROCESS_ID0); |
| 955 | error.SetErrorStringWithFormat( |
| 956 | "failed to get object file from '%s' for arch %s", |
| 957 | exe_module->GetFileSpec().GetFilename().AsCString(), |
| 958 | exe_module->GetArchitecture().GetArchitectureName()); |
| 959 | } |
| 960 | return error; |
| 961 | } |
| 962 | |
| 963 | Status ProcessGDBRemote::ConnectToDebugserver(llvm::StringRef connect_url) { |
| 964 | Status error; |
| 965 | // Only connect if we have a valid connect URL |
| 966 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 967 | |
| 968 | if (!connect_url.empty()) { |
| 969 | if (log) |
| 970 | log->Printf("ProcessGDBRemote::%s Connecting to %s", __FUNCTION__, |
| 971 | connect_url.str().c_str()); |
| 972 | std::unique_ptr<ConnectionFileDescriptor> conn_ap( |
| 973 | new ConnectionFileDescriptor()); |
| 974 | if (conn_ap.get()) { |
| 975 | const uint32_t max_retry_count = 50; |
| 976 | uint32_t retry_count = 0; |
| 977 | while (!m_gdb_comm.IsConnected()) { |
| 978 | if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess) { |
| 979 | m_gdb_comm.SetConnection(conn_ap.release()); |
| 980 | break; |
| 981 | } else if (error.WasInterrupted()) { |
| 982 | // If we were interrupted, don't keep retrying. |
| 983 | break; |
| 984 | } |
| 985 | |
| 986 | retry_count++; |
| 987 | |
| 988 | if (retry_count >= max_retry_count) |
| 989 | break; |
| 990 | |
| 991 | usleep(100000); |
| 992 | } |
| 993 | } |
| 994 | } |
| 995 | |
| 996 | if (!m_gdb_comm.IsConnected()) { |
| 997 | if (error.Success()) |
| 998 | error.SetErrorString("not connected to remote gdb server"); |
| 999 | return error; |
| 1000 | } |
| 1001 | |
| 1002 | // Start the communications read thread so all incoming data can be parsed |
| 1003 | // into packets and queued as they arrive. |
| 1004 | if (GetTarget().GetNonStopModeEnabled()) |
| 1005 | m_gdb_comm.StartReadThread(); |
| 1006 | |
| 1007 | // We always seem to be able to open a connection to a local port so we need |
| 1008 | // to make sure we can then send data to it. If we can't then we aren't |
| 1009 | // actually connected to anything, so try and do the handshake with the |
| 1010 | // remote GDB server and make sure that goes alright. |
| 1011 | if (!m_gdb_comm.HandshakeWithServer(&error)) { |
| 1012 | m_gdb_comm.Disconnect(); |
| 1013 | if (error.Success()) |
| 1014 | error.SetErrorString("not connected to remote gdb server"); |
| 1015 | return error; |
| 1016 | } |
| 1017 | |
| 1018 | // Send $QNonStop:1 packet on startup if required |
| 1019 | if (GetTarget().GetNonStopModeEnabled()) |
| 1020 | GetTarget().SetNonStopModeEnabled(m_gdb_comm.SetNonStopMode(true)); |
| 1021 | |
| 1022 | m_gdb_comm.GetEchoSupported(); |
| 1023 | m_gdb_comm.GetThreadSuffixSupported(); |
| 1024 | m_gdb_comm.GetListThreadsInStopReplySupported(); |
| 1025 | m_gdb_comm.GetHostInfo(); |
| 1026 | m_gdb_comm.GetVContSupported('c'); |
| 1027 | m_gdb_comm.GetVAttachOrWaitSupported(); |
| 1028 | m_gdb_comm.EnableErrorStringInPacket(); |
| 1029 | |
| 1030 | // Ask the remote server for the default thread id |
| 1031 | if (GetTarget().GetNonStopModeEnabled()) |
| 1032 | m_gdb_comm.GetDefaultThreadId(m_initial_tid); |
| 1033 | |
| 1034 | size_t num_cmds = GetExtraStartupCommands().GetArgumentCount(); |
| 1035 | for (size_t idx = 0; idx < num_cmds; idx++) { |
| 1036 | StringExtractorGDBRemote response; |
| 1037 | m_gdb_comm.SendPacketAndWaitForResponse( |
| 1038 | GetExtraStartupCommands().GetArgumentAtIndex(idx), response, false); |
| 1039 | } |
| 1040 | return error; |
| 1041 | } |
| 1042 | |
| 1043 | void ProcessGDBRemote::DidLaunchOrAttach(ArchSpec &process_arch) { |
| 1044 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 1045 | if (log) |
| 1046 | log->Printf("ProcessGDBRemote::%s()", __FUNCTION__); |
| 1047 | if (GetID() != LLDB_INVALID_PROCESS_ID0) { |
| 1048 | BuildDynamicRegisterInfo(false); |
| 1049 | |
| 1050 | // See if the GDB server supports the qHostInfo information |
| 1051 | |
| 1052 | // See if the GDB server supports the qProcessInfo packet, if so prefer |
| 1053 | // that over the Host information as it will be more specific to our |
| 1054 | // process. |
| 1055 | |
| 1056 | const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); |
| 1057 | if (remote_process_arch.IsValid()) { |
| 1058 | process_arch = remote_process_arch; |
| 1059 | if (log) |
| 1060 | log->Printf("ProcessGDBRemote::%s gdb-remote had process architecture, " |
| 1061 | "using %s %s", |
| 1062 | __FUNCTION__, process_arch.GetArchitectureName() |
| 1063 | ? process_arch.GetArchitectureName() |
| 1064 | : "<null>", |
| 1065 | process_arch.GetTriple().getTriple().c_str() |
| 1066 | ? process_arch.GetTriple().getTriple().c_str() |
| 1067 | : "<null>"); |
| 1068 | } else { |
| 1069 | process_arch = m_gdb_comm.GetHostArchitecture(); |
| 1070 | if (log) |
| 1071 | log->Printf("ProcessGDBRemote::%s gdb-remote did not have process " |
| 1072 | "architecture, using gdb-remote host architecture %s %s", |
| 1073 | __FUNCTION__, process_arch.GetArchitectureName() |
| 1074 | ? process_arch.GetArchitectureName() |
| 1075 | : "<null>", |
| 1076 | process_arch.GetTriple().getTriple().c_str() |
| 1077 | ? process_arch.GetTriple().getTriple().c_str() |
| 1078 | : "<null>"); |
| 1079 | } |
| 1080 | |
| 1081 | if (process_arch.IsValid()) { |
| 1082 | const ArchSpec &target_arch = GetTarget().GetArchitecture(); |
| 1083 | if (target_arch.IsValid()) { |
| 1084 | if (log) |
| 1085 | log->Printf( |
| 1086 | "ProcessGDBRemote::%s analyzing target arch, currently %s %s", |
| 1087 | __FUNCTION__, target_arch.GetArchitectureName() |
| 1088 | ? target_arch.GetArchitectureName() |
| 1089 | : "<null>", |
| 1090 | target_arch.GetTriple().getTriple().c_str() |
| 1091 | ? target_arch.GetTriple().getTriple().c_str() |
| 1092 | : "<null>"); |
| 1093 | |
| 1094 | // If the remote host is ARM and we have apple as the vendor, then |
| 1095 | // ARM executables and shared libraries can have mixed ARM |
| 1096 | // architectures. |
| 1097 | // You can have an armv6 executable, and if the host is armv7, then the |
| 1098 | // system will load the best possible architecture for all shared |
| 1099 | // libraries it has, so we really need to take the remote host |
| 1100 | // architecture as our defacto architecture in this case. |
| 1101 | |
| 1102 | if ((process_arch.GetMachine() == llvm::Triple::arm || |
| 1103 | process_arch.GetMachine() == llvm::Triple::thumb) && |
| 1104 | process_arch.GetTriple().getVendor() == llvm::Triple::Apple) { |
| 1105 | GetTarget().SetArchitecture(process_arch); |
| 1106 | if (log) |
| 1107 | log->Printf("ProcessGDBRemote::%s remote process is ARM/Apple, " |
| 1108 | "setting target arch to %s %s", |
| 1109 | __FUNCTION__, process_arch.GetArchitectureName() |
| 1110 | ? process_arch.GetArchitectureName() |
| 1111 | : "<null>", |
| 1112 | process_arch.GetTriple().getTriple().c_str() |
| 1113 | ? process_arch.GetTriple().getTriple().c_str() |
| 1114 | : "<null>"); |
| 1115 | } else { |
| 1116 | // Fill in what is missing in the triple |
| 1117 | const llvm::Triple &remote_triple = process_arch.GetTriple(); |
| 1118 | llvm::Triple new_target_triple = target_arch.GetTriple(); |
| 1119 | if (new_target_triple.getVendorName().size() == 0) { |
| 1120 | new_target_triple.setVendor(remote_triple.getVendor()); |
| 1121 | |
| 1122 | if (new_target_triple.getOSName().size() == 0) { |
| 1123 | new_target_triple.setOS(remote_triple.getOS()); |
| 1124 | |
| 1125 | if (new_target_triple.getEnvironmentName().size() == 0) |
| 1126 | new_target_triple.setEnvironment( |
| 1127 | remote_triple.getEnvironment()); |
| 1128 | } |
| 1129 | |
| 1130 | ArchSpec new_target_arch = target_arch; |
| 1131 | new_target_arch.SetTriple(new_target_triple); |
| 1132 | GetTarget().SetArchitecture(new_target_arch); |
| 1133 | } |
| 1134 | } |
| 1135 | |
| 1136 | if (log) |
| 1137 | log->Printf("ProcessGDBRemote::%s final target arch after " |
| 1138 | "adjustments for remote architecture: %s %s", |
| 1139 | __FUNCTION__, target_arch.GetArchitectureName() |
| 1140 | ? target_arch.GetArchitectureName() |
| 1141 | : "<null>", |
| 1142 | target_arch.GetTriple().getTriple().c_str() |
| 1143 | ? target_arch.GetTriple().getTriple().c_str() |
| 1144 | : "<null>"); |
| 1145 | } else { |
| 1146 | // The target doesn't have a valid architecture yet, set it from the |
| 1147 | // architecture we got from the remote GDB server |
| 1148 | GetTarget().SetArchitecture(process_arch); |
| 1149 | } |
| 1150 | } |
| 1151 | |
| 1152 | // Find out which StructuredDataPlugins are supported by the debug monitor. |
| 1153 | // These plugins transmit data over async $J packets. |
| 1154 | auto supported_packets_array = |
| 1155 | m_gdb_comm.GetSupportedStructuredDataPlugins(); |
| 1156 | if (supported_packets_array) |
| 1157 | MapSupportedStructuredDataPlugins(*supported_packets_array); |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | void ProcessGDBRemote::DidLaunch() { |
| 1162 | ArchSpec process_arch; |
| 1163 | DidLaunchOrAttach(process_arch); |
| 1164 | } |
| 1165 | |
| 1166 | Status ProcessGDBRemote::DoAttachToProcessWithID( |
| 1167 | lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) { |
| 1168 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 1169 | Status error; |
| 1170 | |
| 1171 | if (log) |
| 1172 | log->Printf("ProcessGDBRemote::%s()", __FUNCTION__); |
| 1173 | |
| 1174 | // Clear out and clean up from any current state |
| 1175 | Clear(); |
| 1176 | if (attach_pid != LLDB_INVALID_PROCESS_ID0) { |
| 1177 | error = EstablishConnectionIfNeeded(attach_info); |
| 1178 | if (error.Success()) { |
| 1179 | m_gdb_comm.SetDetachOnError(attach_info.GetDetachOnError()); |
| 1180 | |
| 1181 | char packet[64]; |
| 1182 | const int packet_len = |
| 1183 | ::snprintf(packet, sizeof(packet), "vAttach;%" PRIx64"l" "x", attach_pid); |
| 1184 | SetID(attach_pid); |
| 1185 | m_async_broadcaster.BroadcastEvent( |
| 1186 | eBroadcastBitAsyncContinue, new EventDataBytes(packet, packet_len)); |
| 1187 | } else |
| 1188 | SetExitStatus(-1, error.AsCString()); |
| 1189 | } |
| 1190 | |
| 1191 | return error; |
| 1192 | } |
| 1193 | |
| 1194 | Status ProcessGDBRemote::DoAttachToProcessWithName( |
| 1195 | const char *process_name, const ProcessAttachInfo &attach_info) { |
| 1196 | Status error; |
| 1197 | // Clear out and clean up from any current state |
| 1198 | Clear(); |
| 1199 | |
| 1200 | if (process_name && process_name[0]) { |
| 1201 | error = EstablishConnectionIfNeeded(attach_info); |
| 1202 | if (error.Success()) { |
| 1203 | StreamString packet; |
| 1204 | |
| 1205 | m_gdb_comm.SetDetachOnError(attach_info.GetDetachOnError()); |
| 1206 | |
| 1207 | if (attach_info.GetWaitForLaunch()) { |
| 1208 | if (!m_gdb_comm.GetVAttachOrWaitSupported()) { |
| 1209 | packet.PutCString("vAttachWait"); |
| 1210 | } else { |
| 1211 | if (attach_info.GetIgnoreExisting()) |
| 1212 | packet.PutCString("vAttachWait"); |
| 1213 | else |
| 1214 | packet.PutCString("vAttachOrWait"); |
| 1215 | } |
| 1216 | } else |
| 1217 | packet.PutCString("vAttachName"); |
| 1218 | packet.PutChar(';'); |
| 1219 | packet.PutBytesAsRawHex8(process_name, strlen(process_name), |
| 1220 | endian::InlHostByteOrder(), |
| 1221 | endian::InlHostByteOrder()); |
| 1222 | |
| 1223 | m_async_broadcaster.BroadcastEvent( |
| 1224 | eBroadcastBitAsyncContinue, |
| 1225 | new EventDataBytes(packet.GetString().data(), packet.GetSize())); |
| 1226 | |
| 1227 | } else |
| 1228 | SetExitStatus(-1, error.AsCString()); |
| 1229 | } |
| 1230 | return error; |
| 1231 | } |
| 1232 | |
| 1233 | lldb::user_id_t ProcessGDBRemote::StartTrace(const TraceOptions &options, |
| 1234 | Status &error) { |
| 1235 | return m_gdb_comm.SendStartTracePacket(options, error); |
| 1236 | } |
| 1237 | |
| 1238 | Status ProcessGDBRemote::StopTrace(lldb::user_id_t uid, lldb::tid_t thread_id) { |
| 1239 | return m_gdb_comm.SendStopTracePacket(uid, thread_id); |
| 1240 | } |
| 1241 | |
| 1242 | Status ProcessGDBRemote::GetData(lldb::user_id_t uid, lldb::tid_t thread_id, |
| 1243 | llvm::MutableArrayRef<uint8_t> &buffer, |
| 1244 | size_t offset) { |
| 1245 | return m_gdb_comm.SendGetDataPacket(uid, thread_id, buffer, offset); |
| 1246 | } |
| 1247 | |
| 1248 | Status ProcessGDBRemote::GetMetaData(lldb::user_id_t uid, lldb::tid_t thread_id, |
| 1249 | llvm::MutableArrayRef<uint8_t> &buffer, |
| 1250 | size_t offset) { |
| 1251 | return m_gdb_comm.SendGetMetaDataPacket(uid, thread_id, buffer, offset); |
| 1252 | } |
| 1253 | |
| 1254 | Status ProcessGDBRemote::GetTraceConfig(lldb::user_id_t uid, |
| 1255 | TraceOptions &options) { |
| 1256 | return m_gdb_comm.SendGetTraceConfigPacket(uid, options); |
| 1257 | } |
| 1258 | |
| 1259 | void ProcessGDBRemote::DidExit() { |
| 1260 | // When we exit, disconnect from the GDB server communications |
| 1261 | m_gdb_comm.Disconnect(); |
| 1262 | } |
| 1263 | |
| 1264 | void ProcessGDBRemote::DidAttach(ArchSpec &process_arch) { |
| 1265 | // If you can figure out what the architecture is, fill it in here. |
| 1266 | process_arch.Clear(); |
| 1267 | DidLaunchOrAttach(process_arch); |
| 1268 | } |
| 1269 | |
| 1270 | Status ProcessGDBRemote::WillResume() { |
| 1271 | m_continue_c_tids.clear(); |
| 1272 | m_continue_C_tids.clear(); |
| 1273 | m_continue_s_tids.clear(); |
| 1274 | m_continue_S_tids.clear(); |
| 1275 | m_jstopinfo_sp.reset(); |
| 1276 | m_jthreadsinfo_sp.reset(); |
| 1277 | return Status(); |
| 1278 | } |
| 1279 | |
| 1280 | Status ProcessGDBRemote::DoResume() { |
| 1281 | Status error; |
| 1282 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 1283 | if (log) |
| 1284 | log->Printf("ProcessGDBRemote::Resume()"); |
| 1285 | |
| 1286 | ListenerSP listener_sp( |
| 1287 | Listener::MakeListener("gdb-remote.resume-packet-sent")); |
| 1288 | if (listener_sp->StartListeningForEvents( |
| 1289 | &m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) { |
| 1290 | listener_sp->StartListeningForEvents( |
| 1291 | &m_async_broadcaster, |
| 1292 | ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); |
| 1293 | |
| 1294 | const size_t num_threads = GetThreadList().GetSize(); |
| 1295 | |
| 1296 | StreamString continue_packet; |
| 1297 | bool continue_packet_error = false; |
| 1298 | if (m_gdb_comm.HasAnyVContSupport()) { |
| 1299 | if (!GetTarget().GetNonStopModeEnabled() && |
| 1300 | (m_continue_c_tids.size() == num_threads || |
| 1301 | (m_continue_c_tids.empty() && m_continue_C_tids.empty() && |
| 1302 | m_continue_s_tids.empty() && m_continue_S_tids.empty()))) { |
| 1303 | // All threads are continuing, just send a "c" packet |
| 1304 | continue_packet.PutCString("c"); |
| 1305 | } else { |
| 1306 | continue_packet.PutCString("vCont"); |
| 1307 | |
| 1308 | if (!m_continue_c_tids.empty()) { |
| 1309 | if (m_gdb_comm.GetVContSupported('c')) { |
| 1310 | for (tid_collection::const_iterator |
| 1311 | t_pos = m_continue_c_tids.begin(), |
| 1312 | t_end = m_continue_c_tids.end(); |
| 1313 | t_pos != t_end; ++t_pos) |
| 1314 | continue_packet.Printf(";c:%4.4" PRIx64"l" "x", *t_pos); |
| 1315 | } else |
| 1316 | continue_packet_error = true; |
| 1317 | } |
| 1318 | |
| 1319 | if (!continue_packet_error && !m_continue_C_tids.empty()) { |
| 1320 | if (m_gdb_comm.GetVContSupported('C')) { |
| 1321 | for (tid_sig_collection::const_iterator |
| 1322 | s_pos = m_continue_C_tids.begin(), |
| 1323 | s_end = m_continue_C_tids.end(); |
| 1324 | s_pos != s_end; ++s_pos) |
| 1325 | continue_packet.Printf(";C%2.2x:%4.4" PRIx64"l" "x", s_pos->second, |
| 1326 | s_pos->first); |
| 1327 | } else |
| 1328 | continue_packet_error = true; |
| 1329 | } |
| 1330 | |
| 1331 | if (!continue_packet_error && !m_continue_s_tids.empty()) { |
| 1332 | if (m_gdb_comm.GetVContSupported('s')) { |
| 1333 | for (tid_collection::const_iterator |
| 1334 | t_pos = m_continue_s_tids.begin(), |
| 1335 | t_end = m_continue_s_tids.end(); |
| 1336 | t_pos != t_end; ++t_pos) |
| 1337 | continue_packet.Printf(";s:%4.4" PRIx64"l" "x", *t_pos); |
| 1338 | } else |
| 1339 | continue_packet_error = true; |
| 1340 | } |
| 1341 | |
| 1342 | if (!continue_packet_error && !m_continue_S_tids.empty()) { |
| 1343 | if (m_gdb_comm.GetVContSupported('S')) { |
| 1344 | for (tid_sig_collection::const_iterator |
| 1345 | s_pos = m_continue_S_tids.begin(), |
| 1346 | s_end = m_continue_S_tids.end(); |
| 1347 | s_pos != s_end; ++s_pos) |
| 1348 | continue_packet.Printf(";S%2.2x:%4.4" PRIx64"l" "x", s_pos->second, |
| 1349 | s_pos->first); |
| 1350 | } else |
| 1351 | continue_packet_error = true; |
| 1352 | } |
| 1353 | |
| 1354 | if (continue_packet_error) |
| 1355 | continue_packet.Clear(); |
| 1356 | } |
| 1357 | } else |
| 1358 | continue_packet_error = true; |
| 1359 | |
| 1360 | if (continue_packet_error) { |
| 1361 | // Either no vCont support, or we tried to use part of the vCont packet |
| 1362 | // that wasn't supported by the remote GDB server. We need to try and |
| 1363 | // make a simple packet that can do our continue |
| 1364 | const size_t num_continue_c_tids = m_continue_c_tids.size(); |
| 1365 | const size_t num_continue_C_tids = m_continue_C_tids.size(); |
| 1366 | const size_t num_continue_s_tids = m_continue_s_tids.size(); |
| 1367 | const size_t num_continue_S_tids = m_continue_S_tids.size(); |
| 1368 | if (num_continue_c_tids > 0) { |
| 1369 | if (num_continue_c_tids == num_threads) { |
| 1370 | // All threads are resuming... |
| 1371 | m_gdb_comm.SetCurrentThreadForRun(-1); |
| 1372 | continue_packet.PutChar('c'); |
| 1373 | continue_packet_error = false; |
| 1374 | } else if (num_continue_c_tids == 1 && num_continue_C_tids == 0 && |
| 1375 | num_continue_s_tids == 0 && num_continue_S_tids == 0) { |
| 1376 | // Only one thread is continuing |
| 1377 | m_gdb_comm.SetCurrentThreadForRun(m_continue_c_tids.front()); |
| 1378 | continue_packet.PutChar('c'); |
| 1379 | continue_packet_error = false; |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | if (continue_packet_error && num_continue_C_tids > 0) { |
| 1384 | if ((num_continue_C_tids + num_continue_c_tids) == num_threads && |
| 1385 | num_continue_C_tids > 0 && num_continue_s_tids == 0 && |
| 1386 | num_continue_S_tids == 0) { |
| 1387 | const int continue_signo = m_continue_C_tids.front().second; |
| 1388 | // Only one thread is continuing |
| 1389 | if (num_continue_C_tids > 1) { |
| 1390 | // More that one thread with a signal, yet we don't have vCont |
| 1391 | // support and we are being asked to resume each thread with a |
| 1392 | // signal, we need to make sure they are all the same signal, or we |
| 1393 | // can't issue the continue accurately with the current support... |
| 1394 | if (num_continue_C_tids > 1) { |
| 1395 | continue_packet_error = false; |
| 1396 | for (size_t i = 1; i < m_continue_C_tids.size(); ++i) { |
| 1397 | if (m_continue_C_tids[i].second != continue_signo) |
| 1398 | continue_packet_error = true; |
| 1399 | } |
| 1400 | } |
| 1401 | if (!continue_packet_error) |
| 1402 | m_gdb_comm.SetCurrentThreadForRun(-1); |
| 1403 | } else { |
| 1404 | // Set the continue thread ID |
| 1405 | continue_packet_error = false; |
| 1406 | m_gdb_comm.SetCurrentThreadForRun(m_continue_C_tids.front().first); |
| 1407 | } |
| 1408 | if (!continue_packet_error) { |
| 1409 | // Add threads continuing with the same signo... |
| 1410 | continue_packet.Printf("C%2.2x", continue_signo); |
| 1411 | } |
| 1412 | } |
| 1413 | } |
| 1414 | |
| 1415 | if (continue_packet_error && num_continue_s_tids > 0) { |
| 1416 | if (num_continue_s_tids == num_threads) { |
| 1417 | // All threads are resuming... |
| 1418 | m_gdb_comm.SetCurrentThreadForRun(-1); |
| 1419 | |
| 1420 | // If in Non-Stop-Mode use vCont when stepping |
| 1421 | if (GetTarget().GetNonStopModeEnabled()) { |
| 1422 | if (m_gdb_comm.GetVContSupported('s')) |
| 1423 | continue_packet.PutCString("vCont;s"); |
| 1424 | else |
| 1425 | continue_packet.PutChar('s'); |
| 1426 | } else |
| 1427 | continue_packet.PutChar('s'); |
| 1428 | |
| 1429 | continue_packet_error = false; |
| 1430 | } else if (num_continue_c_tids == 0 && num_continue_C_tids == 0 && |
| 1431 | num_continue_s_tids == 1 && num_continue_S_tids == 0) { |
| 1432 | // Only one thread is stepping |
| 1433 | m_gdb_comm.SetCurrentThreadForRun(m_continue_s_tids.front()); |
| 1434 | continue_packet.PutChar('s'); |
| 1435 | continue_packet_error = false; |
| 1436 | } |
| 1437 | } |
| 1438 | |
| 1439 | if (!continue_packet_error && num_continue_S_tids > 0) { |
| 1440 | if (num_continue_S_tids == num_threads) { |
| 1441 | const int step_signo = m_continue_S_tids.front().second; |
| 1442 | // Are all threads trying to step with the same signal? |
| 1443 | continue_packet_error = false; |
| 1444 | if (num_continue_S_tids > 1) { |
| 1445 | for (size_t i = 1; i < num_threads; ++i) { |
| 1446 | if (m_continue_S_tids[i].second != step_signo) |
| 1447 | continue_packet_error = true; |
| 1448 | } |
| 1449 | } |
| 1450 | if (!continue_packet_error) { |
| 1451 | // Add threads stepping with the same signo... |
| 1452 | m_gdb_comm.SetCurrentThreadForRun(-1); |
| 1453 | continue_packet.Printf("S%2.2x", step_signo); |
| 1454 | } |
| 1455 | } else if (num_continue_c_tids == 0 && num_continue_C_tids == 0 && |
| 1456 | num_continue_s_tids == 0 && num_continue_S_tids == 1) { |
| 1457 | // Only one thread is stepping with signal |
| 1458 | m_gdb_comm.SetCurrentThreadForRun(m_continue_S_tids.front().first); |
| 1459 | continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); |
| 1460 | continue_packet_error = false; |
| 1461 | } |
| 1462 | } |
| 1463 | } |
| 1464 | |
| 1465 | if (continue_packet_error) { |
| 1466 | error.SetErrorString("can't make continue packet for this resume"); |
| 1467 | } else { |
| 1468 | EventSP event_sp; |
| 1469 | if (!m_async_thread.IsJoinable()) { |
| 1470 | error.SetErrorString("Trying to resume but the async thread is dead."); |
| 1471 | if (log) |
| 1472 | log->Printf("ProcessGDBRemote::DoResume: Trying to resume but the " |
| 1473 | "async thread is dead."); |
| 1474 | return error; |
| 1475 | } |
| 1476 | |
| 1477 | m_async_broadcaster.BroadcastEvent( |
| 1478 | eBroadcastBitAsyncContinue, |
| 1479 | new EventDataBytes(continue_packet.GetString().data(), |
| 1480 | continue_packet.GetSize())); |
| 1481 | |
| 1482 | if (listener_sp->GetEvent(event_sp, std::chrono::seconds(5)) == false) { |
| 1483 | error.SetErrorString("Resume timed out."); |
| 1484 | if (log) |
| 1485 | log->Printf("ProcessGDBRemote::DoResume: Resume timed out."); |
| 1486 | } else if (event_sp->BroadcasterIs(&m_async_broadcaster)) { |
| 1487 | error.SetErrorString("Broadcast continue, but the async thread was " |
| 1488 | "killed before we got an ack back."); |
| 1489 | if (log) |
| 1490 | log->Printf("ProcessGDBRemote::DoResume: Broadcast continue, but the " |
| 1491 | "async thread was killed before we got an ack back."); |
| 1492 | return error; |
| 1493 | } |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | return error; |
| 1498 | } |
| 1499 | |
| 1500 | void ProcessGDBRemote::HandleStopReplySequence() { |
| 1501 | while (true) { |
| 1502 | // Send vStopped |
| 1503 | StringExtractorGDBRemote response; |
| 1504 | m_gdb_comm.SendPacketAndWaitForResponse("vStopped", response, false); |
| 1505 | |
| 1506 | // OK represents end of signal list |
| 1507 | if (response.IsOKResponse()) |
| 1508 | break; |
| 1509 | |
| 1510 | // If not OK or a normal packet we have a problem |
| 1511 | if (!response.IsNormalResponse()) |
| 1512 | break; |
| 1513 | |
| 1514 | SetLastStopPacket(response); |
| 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | void ProcessGDBRemote::ClearThreadIDList() { |
| 1519 | std::lock_guard<std::recursive_mutex> guard(m_thread_list_real.GetMutex()); |
| 1520 | m_thread_ids.clear(); |
| 1521 | m_thread_pcs.clear(); |
| 1522 | } |
| 1523 | |
| 1524 | size_t |
| 1525 | ProcessGDBRemote::UpdateThreadIDsFromStopReplyThreadsValue(std::string &value) { |
| 1526 | m_thread_ids.clear(); |
| 1527 | size_t comma_pos; |
| 1528 | lldb::tid_t tid; |
| 1529 | while ((comma_pos = value.find(',')) != std::string::npos) { |
| 1530 | value[comma_pos] = '\0'; |
| 1531 | // thread in big endian hex |
| 1532 | tid = StringConvert::ToUInt64(value.c_str(), LLDB_INVALID_THREAD_ID0, 16); |
| 1533 | if (tid != LLDB_INVALID_THREAD_ID0) |
| 1534 | m_thread_ids.push_back(tid); |
| 1535 | value.erase(0, comma_pos + 1); |
| 1536 | } |
| 1537 | tid = StringConvert::ToUInt64(value.c_str(), LLDB_INVALID_THREAD_ID0, 16); |
| 1538 | if (tid != LLDB_INVALID_THREAD_ID0) |
| 1539 | m_thread_ids.push_back(tid); |
| 1540 | return m_thread_ids.size(); |
| 1541 | } |
| 1542 | |
| 1543 | size_t |
| 1544 | ProcessGDBRemote::UpdateThreadPCsFromStopReplyThreadsValue(std::string &value) { |
| 1545 | m_thread_pcs.clear(); |
| 1546 | size_t comma_pos; |
| 1547 | lldb::addr_t pc; |
| 1548 | while ((comma_pos = value.find(',')) != std::string::npos) { |
| 1549 | value[comma_pos] = '\0'; |
| 1550 | pc = StringConvert::ToUInt64(value.c_str(), LLDB_INVALID_ADDRESS(18446744073709551615UL), 16); |
| 1551 | if (pc != LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
| 1552 | m_thread_pcs.push_back(pc); |
| 1553 | value.erase(0, comma_pos + 1); |
| 1554 | } |
| 1555 | pc = StringConvert::ToUInt64(value.c_str(), LLDB_INVALID_ADDRESS(18446744073709551615UL), 16); |
| 1556 | if (pc != LLDB_INVALID_THREAD_ID0) |
| 1557 | m_thread_pcs.push_back(pc); |
| 1558 | return m_thread_pcs.size(); |
| 1559 | } |
| 1560 | |
| 1561 | bool ProcessGDBRemote::UpdateThreadIDList() { |
| 1562 | std::lock_guard<std::recursive_mutex> guard(m_thread_list_real.GetMutex()); |
| 1563 | |
| 1564 | if (m_jthreadsinfo_sp) { |
| 1565 | // If we have the JSON threads info, we can get the thread list from that |
| 1566 | StructuredData::Array *thread_infos = m_jthreadsinfo_sp->GetAsArray(); |
| 1567 | if (thread_infos && thread_infos->GetSize() > 0) { |
| 1568 | m_thread_ids.clear(); |
| 1569 | m_thread_pcs.clear(); |
| 1570 | thread_infos->ForEach([this](StructuredData::Object *object) -> bool { |
| 1571 | StructuredData::Dictionary *thread_dict = object->GetAsDictionary(); |
| 1572 | if (thread_dict) { |
| 1573 | // Set the thread stop info from the JSON dictionary |
| 1574 | SetThreadStopInfo(thread_dict); |
| 1575 | lldb::tid_t tid = LLDB_INVALID_THREAD_ID0; |
| 1576 | if (thread_dict->GetValueForKeyAsInteger<lldb::tid_t>("tid", tid)) |
| 1577 | m_thread_ids.push_back(tid); |
| 1578 | } |
| 1579 | return true; // Keep iterating through all thread_info objects |
| 1580 | }); |
| 1581 | } |
| 1582 | if (!m_thread_ids.empty()) |
| 1583 | return true; |
| 1584 | } else { |
| 1585 | // See if we can get the thread IDs from the current stop reply packets |
| 1586 | // that might contain a "threads" key/value pair |
| 1587 | |
| 1588 | // Lock the thread stack while we access it |
| 1589 | // Mutex::Locker stop_stack_lock(m_last_stop_packet_mutex); |
| 1590 | std::unique_lock<std::recursive_mutex> stop_stack_lock( |
| 1591 | m_last_stop_packet_mutex, std::defer_lock); |
| 1592 | if (stop_stack_lock.try_lock()) { |
| 1593 | // Get the number of stop packets on the stack |
| 1594 | int nItems = m_stop_packet_stack.size(); |
| 1595 | // Iterate over them |
| 1596 | for (int i = 0; i < nItems; i++) { |
| 1597 | // Get the thread stop info |
| 1598 | StringExtractorGDBRemote &stop_info = m_stop_packet_stack[i]; |
| 1599 | const std::string &stop_info_str = stop_info.GetStringRef(); |
| 1600 | |
| 1601 | m_thread_pcs.clear(); |
| 1602 | const size_t thread_pcs_pos = stop_info_str.find(";thread-pcs:"); |
| 1603 | if (thread_pcs_pos != std::string::npos) { |
| 1604 | const size_t start = thread_pcs_pos + strlen(";thread-pcs:"); |
| 1605 | const size_t end = stop_info_str.find(';', start); |
| 1606 | if (end != std::string::npos) { |
| 1607 | std::string value = stop_info_str.substr(start, end - start); |
| 1608 | UpdateThreadPCsFromStopReplyThreadsValue(value); |
| 1609 | } |
| 1610 | } |
| 1611 | |
| 1612 | const size_t threads_pos = stop_info_str.find(";threads:"); |
| 1613 | if (threads_pos != std::string::npos) { |
| 1614 | const size_t start = threads_pos + strlen(";threads:"); |
| 1615 | const size_t end = stop_info_str.find(';', start); |
| 1616 | if (end != std::string::npos) { |
| 1617 | std::string value = stop_info_str.substr(start, end - start); |
| 1618 | if (UpdateThreadIDsFromStopReplyThreadsValue(value)) |
| 1619 | return true; |
| 1620 | } |
| 1621 | } |
| 1622 | } |
| 1623 | } |
| 1624 | } |
| 1625 | |
| 1626 | bool sequence_mutex_unavailable = false; |
| 1627 | m_gdb_comm.GetCurrentThreadIDs(m_thread_ids, sequence_mutex_unavailable); |
| 1628 | if (sequence_mutex_unavailable) { |
| 1629 | return false; // We just didn't get the list |
| 1630 | } |
| 1631 | return true; |
| 1632 | } |
| 1633 | |
| 1634 | bool ProcessGDBRemote::UpdateThreadList(ThreadList &old_thread_list, |
| 1635 | ThreadList &new_thread_list) { |
| 1636 | // locker will keep a mutex locked until it goes out of scope |
| 1637 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_THREAD(1u << 2))); |
| 1638 | LLDB_LOGV(log, "pid = {0}", GetID())do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "pid = {0}", GetID()); } while (0); |
| 1639 | |
| 1640 | size_t num_thread_ids = m_thread_ids.size(); |
| 1641 | // The "m_thread_ids" thread ID list should always be updated after each stop |
| 1642 | // reply packet, but in case it isn't, update it here. |
| 1643 | if (num_thread_ids == 0) { |
| 1644 | if (!UpdateThreadIDList()) |
| 1645 | return false; |
| 1646 | num_thread_ids = m_thread_ids.size(); |
| 1647 | } |
| 1648 | |
| 1649 | ThreadList old_thread_list_copy(old_thread_list); |
| 1650 | if (num_thread_ids > 0) { |
| 1651 | for (size_t i = 0; i < num_thread_ids; ++i) { |
| 1652 | tid_t tid = m_thread_ids[i]; |
| 1653 | ThreadSP thread_sp( |
| 1654 | old_thread_list_copy.RemoveThreadByProtocolID(tid, false)); |
| 1655 | if (!thread_sp) { |
| 1656 | thread_sp.reset(new ThreadGDBRemote(*this, tid)); |
| 1657 | LLDB_LOGV(log, "Making new thread: {0} for thread ID: {1:x}.",do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Making new thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0) |
| 1658 | thread_sp.get(), thread_sp->GetID())do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Making new thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0); |
| 1659 | } else { |
| 1660 | LLDB_LOGV(log, "Found old thread: {0} for thread ID: {1:x}.",do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Found old thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0) |
| 1661 | thread_sp.get(), thread_sp->GetID())do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Found old thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0); |
| 1662 | } |
| 1663 | |
| 1664 | SetThreadPc(thread_sp, i); |
| 1665 | new_thread_list.AddThreadSortedByIndexID(thread_sp); |
| 1666 | } |
| 1667 | } |
| 1668 | |
| 1669 | // Whatever that is left in old_thread_list_copy are not present in |
| 1670 | // new_thread_list. Remove non-existent threads from internal id table. |
| 1671 | size_t old_num_thread_ids = old_thread_list_copy.GetSize(false); |
| 1672 | for (size_t i = 0; i < old_num_thread_ids; i++) { |
| 1673 | ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex(i, false)); |
| 1674 | if (old_thread_sp) { |
| 1675 | lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID(); |
| 1676 | m_thread_id_to_index_id_map.erase(old_thread_id); |
| 1677 | } |
| 1678 | } |
| 1679 | |
| 1680 | return true; |
| 1681 | } |
| 1682 | |
| 1683 | void ProcessGDBRemote::SetThreadPc(const ThreadSP &thread_sp, uint64_t index) { |
| 1684 | if (m_thread_ids.size() == m_thread_pcs.size() && thread_sp.get() && |
| 1685 | GetByteOrder() != eByteOrderInvalid) { |
| 1686 | ThreadGDBRemote *gdb_thread = |
| 1687 | static_cast<ThreadGDBRemote *>(thread_sp.get()); |
| 1688 | RegisterContextSP reg_ctx_sp(thread_sp->GetRegisterContext()); |
| 1689 | if (reg_ctx_sp) { |
| 1690 | uint32_t pc_regnum = reg_ctx_sp->ConvertRegisterKindToRegisterNumber( |
| 1691 | eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC0); |
| 1692 | if (pc_regnum != LLDB_INVALID_REGNUM(4294967295U)) { |
| 1693 | gdb_thread->PrivateSetRegisterValue(pc_regnum, m_thread_pcs[index]); |
| 1694 | } |
| 1695 | } |
| 1696 | } |
| 1697 | } |
| 1698 | |
| 1699 | bool ProcessGDBRemote::GetThreadStopInfoFromJSON( |
| 1700 | ThreadGDBRemote *thread, const StructuredData::ObjectSP &thread_infos_sp) { |
| 1701 | // See if we got thread stop infos for all threads via the "jThreadsInfo" |
| 1702 | // packet |
| 1703 | if (thread_infos_sp) { |
| 1704 | StructuredData::Array *thread_infos = thread_infos_sp->GetAsArray(); |
| 1705 | if (thread_infos) { |
| 1706 | lldb::tid_t tid; |
| 1707 | const size_t n = thread_infos->GetSize(); |
| 1708 | for (size_t i = 0; i < n; ++i) { |
| 1709 | StructuredData::Dictionary *thread_dict = |
| 1710 | thread_infos->GetItemAtIndex(i)->GetAsDictionary(); |
| 1711 | if (thread_dict) { |
| 1712 | if (thread_dict->GetValueForKeyAsInteger<lldb::tid_t>( |
| 1713 | "tid", tid, LLDB_INVALID_THREAD_ID0)) { |
| 1714 | if (tid == thread->GetID()) |
| 1715 | return (bool)SetThreadStopInfo(thread_dict); |
| 1716 | } |
| 1717 | } |
| 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | return false; |
| 1722 | } |
| 1723 | |
| 1724 | bool ProcessGDBRemote::CalculateThreadStopInfo(ThreadGDBRemote *thread) { |
| 1725 | // See if we got thread stop infos for all threads via the "jThreadsInfo" |
| 1726 | // packet |
| 1727 | if (GetThreadStopInfoFromJSON(thread, m_jthreadsinfo_sp)) |
| 1728 | return true; |
| 1729 | |
| 1730 | // See if we got thread stop info for any threads valid stop info reasons |
| 1731 | // threads via the "jstopinfo" packet stop reply packet key/value pair? |
| 1732 | if (m_jstopinfo_sp) { |
| 1733 | // If we have "jstopinfo" then we have stop descriptions for all threads |
| 1734 | // that have stop reasons, and if there is no entry for a thread, then it |
| 1735 | // has no stop reason. |
| 1736 | thread->GetRegisterContext()->InvalidateIfNeeded(true); |
| 1737 | if (!GetThreadStopInfoFromJSON(thread, m_jstopinfo_sp)) { |
| 1738 | thread->SetStopInfo(StopInfoSP()); |
| 1739 | } |
| 1740 | return true; |
| 1741 | } |
| 1742 | |
| 1743 | // Fall back to using the qThreadStopInfo packet |
| 1744 | StringExtractorGDBRemote stop_packet; |
| 1745 | if (GetGDBRemote().GetThreadStopInfo(thread->GetProtocolID(), stop_packet)) |
| 1746 | return SetThreadStopInfo(stop_packet) == eStateStopped; |
| 1747 | return false; |
| 1748 | } |
| 1749 | |
| 1750 | ThreadSP ProcessGDBRemote::SetThreadStopInfo( |
| 1751 | lldb::tid_t tid, ExpeditedRegisterMap &expedited_register_map, |
| 1752 | uint8_t signo, const std::string &thread_name, const std::string &reason, |
| 1753 | const std::string &description, uint32_t exc_type, |
| 1754 | const std::vector<addr_t> &exc_data, addr_t thread_dispatch_qaddr, |
| 1755 | bool queue_vars_valid, // Set to true if queue_name, queue_kind and |
| 1756 | // queue_serial are valid |
| 1757 | LazyBool associated_with_dispatch_queue, addr_t dispatch_queue_t, |
| 1758 | std::string &queue_name, QueueKind queue_kind, uint64_t queue_serial) { |
| 1759 | ThreadSP thread_sp; |
| 1760 | if (tid != LLDB_INVALID_THREAD_ID0) { |
| 1761 | // Scope for "locker" below |
| 1762 | { |
| 1763 | // m_thread_list_real does have its own mutex, but we need to hold onto |
| 1764 | // the mutex between the call to m_thread_list_real.FindThreadByID(...) |
| 1765 | // and the m_thread_list_real.AddThread(...) so it doesn't change on us |
| 1766 | std::lock_guard<std::recursive_mutex> guard( |
| 1767 | m_thread_list_real.GetMutex()); |
| 1768 | thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false); |
| 1769 | |
| 1770 | if (!thread_sp) { |
| 1771 | // Create the thread if we need to |
| 1772 | thread_sp.reset(new ThreadGDBRemote(*this, tid)); |
| 1773 | m_thread_list_real.AddThread(thread_sp); |
| 1774 | } |
| 1775 | } |
| 1776 | |
| 1777 | if (thread_sp) { |
| 1778 | ThreadGDBRemote *gdb_thread = |
| 1779 | static_cast<ThreadGDBRemote *>(thread_sp.get()); |
| 1780 | gdb_thread->GetRegisterContext()->InvalidateIfNeeded(true); |
| 1781 | |
| 1782 | auto iter = std::find(m_thread_ids.begin(), m_thread_ids.end(), tid); |
| 1783 | if (iter != m_thread_ids.end()) { |
| 1784 | SetThreadPc(thread_sp, iter - m_thread_ids.begin()); |
| 1785 | } |
| 1786 | |
| 1787 | for (const auto &pair : expedited_register_map) { |
| 1788 | StringExtractor reg_value_extractor; |
| 1789 | reg_value_extractor.GetStringRef() = pair.second; |
| 1790 | DataBufferSP buffer_sp(new DataBufferHeap( |
| 1791 | reg_value_extractor.GetStringRef().size() / 2, 0)); |
| 1792 | reg_value_extractor.GetHexBytes(buffer_sp->GetData(), '\xcc'); |
| 1793 | gdb_thread->PrivateSetRegisterValue(pair.first, buffer_sp->GetData()); |
| 1794 | } |
| 1795 | |
| 1796 | thread_sp->SetName(thread_name.empty() ? NULL__null : thread_name.c_str()); |
| 1797 | |
| 1798 | gdb_thread->SetThreadDispatchQAddr(thread_dispatch_qaddr); |
| 1799 | // Check if the GDB server was able to provide the queue name, kind and |
| 1800 | // serial number |
| 1801 | if (queue_vars_valid) |
| 1802 | gdb_thread->SetQueueInfo(std::move(queue_name), queue_kind, |
| 1803 | queue_serial, dispatch_queue_t, |
| 1804 | associated_with_dispatch_queue); |
| 1805 | else |
| 1806 | gdb_thread->ClearQueueInfo(); |
| 1807 | |
| 1808 | gdb_thread->SetAssociatedWithLibdispatchQueue( |
| 1809 | associated_with_dispatch_queue); |
| 1810 | |
| 1811 | if (dispatch_queue_t != LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
| 1812 | gdb_thread->SetQueueLibdispatchQueueAddress(dispatch_queue_t); |
| 1813 | |
| 1814 | // Make sure we update our thread stop reason just once |
| 1815 | if (!thread_sp->StopInfoIsUpToDate()) { |
| 1816 | thread_sp->SetStopInfo(StopInfoSP()); |
| 1817 | // If there's a memory thread backed by this thread, we need to use it |
| 1818 | // to calculate StopInfo. |
| 1819 | if (ThreadSP memory_thread_sp = |
| 1820 | m_thread_list.GetBackingThread(thread_sp)) |
| 1821 | thread_sp = memory_thread_sp; |
| 1822 | |
| 1823 | if (exc_type != 0) { |
| 1824 | const size_t exc_data_size = exc_data.size(); |
| 1825 | |
| 1826 | thread_sp->SetStopInfo( |
| 1827 | StopInfoMachException::CreateStopReasonWithMachException( |
| 1828 | *thread_sp, exc_type, exc_data_size, |
| 1829 | exc_data_size >= 1 ? exc_data[0] : 0, |
| 1830 | exc_data_size >= 2 ? exc_data[1] : 0, |
| 1831 | exc_data_size >= 3 ? exc_data[2] : 0)); |
| 1832 | } else { |
| 1833 | bool handled = false; |
| 1834 | bool did_exec = false; |
| 1835 | if (!reason.empty()) { |
| 1836 | if (reason.compare("trace") == 0) { |
| 1837 | addr_t pc = thread_sp->GetRegisterContext()->GetPC(); |
| 1838 | lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess() |
| 1839 | ->GetBreakpointSiteList() |
| 1840 | .FindByAddress(pc); |
| 1841 | |
| 1842 | // If the current pc is a breakpoint site then the StopInfo |
| 1843 | // should be set to Breakpoint Otherwise, it will be set to |
| 1844 | // Trace. |
| 1845 | if (bp_site_sp && |
| 1846 | bp_site_sp->ValidForThisThread(thread_sp.get())) { |
| 1847 | thread_sp->SetStopInfo( |
| 1848 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
| 1849 | *thread_sp, bp_site_sp->GetID())); |
| 1850 | } else |
| 1851 | thread_sp->SetStopInfo( |
| 1852 | StopInfo::CreateStopReasonToTrace(*thread_sp)); |
| 1853 | handled = true; |
| 1854 | } else if (reason.compare("breakpoint") == 0) { |
| 1855 | addr_t pc = thread_sp->GetRegisterContext()->GetPC(); |
| 1856 | lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess() |
| 1857 | ->GetBreakpointSiteList() |
| 1858 | .FindByAddress(pc); |
| 1859 | if (bp_site_sp) { |
| 1860 | // If the breakpoint is for this thread, then we'll report the |
| 1861 | // hit, but if it is for another thread, we can just report no |
| 1862 | // reason. We don't need to worry about stepping over the |
| 1863 | // breakpoint here, that will be taken care of when the thread |
| 1864 | // resumes and notices that there's a breakpoint under the pc. |
| 1865 | handled = true; |
| 1866 | if (bp_site_sp->ValidForThisThread(thread_sp.get())) { |
| 1867 | thread_sp->SetStopInfo( |
| 1868 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
| 1869 | *thread_sp, bp_site_sp->GetID())); |
| 1870 | } else { |
| 1871 | StopInfoSP invalid_stop_info_sp; |
| 1872 | thread_sp->SetStopInfo(invalid_stop_info_sp); |
| 1873 | } |
| 1874 | } |
| 1875 | } else if (reason.compare("trap") == 0) { |
| 1876 | // Let the trap just use the standard signal stop reason below... |
| 1877 | } else if (reason.compare("watchpoint") == 0) { |
| 1878 | StringExtractor desc_extractor(description.c_str()); |
| 1879 | addr_t wp_addr = desc_extractor.GetU64(LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
| 1880 | uint32_t wp_index = desc_extractor.GetU32(LLDB_INVALID_INDEX32(4294967295U)); |
| 1881 | addr_t wp_hit_addr = desc_extractor.GetU64(LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
| 1882 | watch_id_t watch_id = LLDB_INVALID_WATCH_ID0; |
| 1883 | if (wp_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL)) { |
| 1884 | WatchpointSP wp_sp; |
| 1885 | ArchSpec::Core core = GetTarget().GetArchitecture().GetCore(); |
| 1886 | if ((core >= ArchSpec::kCore_mips_first && |
| 1887 | core <= ArchSpec::kCore_mips_last) || |
| 1888 | (core >= ArchSpec::eCore_arm_generic && |
| 1889 | core <= ArchSpec::eCore_arm_aarch64)) |
| 1890 | wp_sp = GetTarget().GetWatchpointList().FindByAddress( |
| 1891 | wp_hit_addr); |
| 1892 | if (!wp_sp) |
| 1893 | wp_sp = |
| 1894 | GetTarget().GetWatchpointList().FindByAddress(wp_addr); |
| 1895 | if (wp_sp) { |
| 1896 | wp_sp->SetHardwareIndex(wp_index); |
| 1897 | watch_id = wp_sp->GetID(); |
| 1898 | } |
| 1899 | } |
| 1900 | if (watch_id == LLDB_INVALID_WATCH_ID0) { |
| 1901 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet( |
| 1902 | GDBR_LOG_WATCHPOINTS(1u << 8))); |
| 1903 | if (log) |
| 1904 | log->Printf("failed to find watchpoint"); |
| 1905 | } |
| 1906 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithWatchpointID( |
| 1907 | *thread_sp, watch_id, wp_hit_addr)); |
| 1908 | handled = true; |
| 1909 | } else if (reason.compare("exception") == 0) { |
| 1910 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithException( |
| 1911 | *thread_sp, description.c_str())); |
| 1912 | handled = true; |
| 1913 | } else if (reason.compare("exec") == 0) { |
| 1914 | did_exec = true; |
| 1915 | thread_sp->SetStopInfo( |
| 1916 | StopInfo::CreateStopReasonWithExec(*thread_sp)); |
| 1917 | handled = true; |
| 1918 | } |
| 1919 | } else if (!signo) { |
| 1920 | addr_t pc = thread_sp->GetRegisterContext()->GetPC(); |
| 1921 | lldb::BreakpointSiteSP bp_site_sp = |
| 1922 | thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress( |
| 1923 | pc); |
| 1924 | |
| 1925 | // If the current pc is a breakpoint site then the StopInfo should |
| 1926 | // be set to Breakpoint even though the remote stub did not set it |
| 1927 | // as such. This can happen when the thread is involuntarily |
| 1928 | // interrupted (e.g. due to stops on other threads) just as it is |
| 1929 | // about to execute the breakpoint instruction. |
| 1930 | if (bp_site_sp && bp_site_sp->ValidForThisThread(thread_sp.get())) { |
| 1931 | thread_sp->SetStopInfo( |
| 1932 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
| 1933 | *thread_sp, bp_site_sp->GetID())); |
| 1934 | handled = true; |
| 1935 | } |
| 1936 | } |
| 1937 | |
| 1938 | if (!handled && signo && did_exec == false) { |
| 1939 | if (signo == SIGTRAP5) { |
| 1940 | // Currently we are going to assume SIGTRAP means we are either |
| 1941 | // hitting a breakpoint or hardware single stepping. |
| 1942 | handled = true; |
| 1943 | addr_t pc = thread_sp->GetRegisterContext()->GetPC() + |
| 1944 | m_breakpoint_pc_offset; |
| 1945 | lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess() |
| 1946 | ->GetBreakpointSiteList() |
| 1947 | .FindByAddress(pc); |
| 1948 | |
| 1949 | if (bp_site_sp) { |
| 1950 | // If the breakpoint is for this thread, then we'll report the |
| 1951 | // hit, but if it is for another thread, we can just report no |
| 1952 | // reason. We don't need to worry about stepping over the |
| 1953 | // breakpoint here, that will be taken care of when the thread |
| 1954 | // resumes and notices that there's a breakpoint under the pc. |
| 1955 | if (bp_site_sp->ValidForThisThread(thread_sp.get())) { |
| 1956 | if (m_breakpoint_pc_offset != 0) |
| 1957 | thread_sp->GetRegisterContext()->SetPC(pc); |
| 1958 | thread_sp->SetStopInfo( |
| 1959 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
| 1960 | *thread_sp, bp_site_sp->GetID())); |
| 1961 | } else { |
| 1962 | StopInfoSP invalid_stop_info_sp; |
| 1963 | thread_sp->SetStopInfo(invalid_stop_info_sp); |
| 1964 | } |
| 1965 | } else { |
| 1966 | // If we were stepping then assume the stop was the result of |
| 1967 | // the trace. If we were not stepping then report the SIGTRAP. |
| 1968 | // FIXME: We are still missing the case where we single step |
| 1969 | // over a trap instruction. |
| 1970 | if (thread_sp->GetTemporaryResumeState() == eStateStepping) |
| 1971 | thread_sp->SetStopInfo( |
| 1972 | StopInfo::CreateStopReasonToTrace(*thread_sp)); |
| 1973 | else |
| 1974 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithSignal( |
| 1975 | *thread_sp, signo, description.c_str())); |
| 1976 | } |
| 1977 | } |
| 1978 | if (!handled) |
| 1979 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithSignal( |
| 1980 | *thread_sp, signo, description.c_str())); |
| 1981 | } |
| 1982 | |
| 1983 | if (!description.empty()) { |
| 1984 | lldb::StopInfoSP stop_info_sp(thread_sp->GetStopInfo()); |
| 1985 | if (stop_info_sp) { |
| 1986 | const char *stop_info_desc = stop_info_sp->GetDescription(); |
| 1987 | if (!stop_info_desc || !stop_info_desc[0]) |
| 1988 | stop_info_sp->SetDescription(description.c_str()); |
| 1989 | } else { |
| 1990 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithException( |
| 1991 | *thread_sp, description.c_str())); |
| 1992 | } |
| 1993 | } |
| 1994 | } |
| 1995 | } |
| 1996 | } |
| 1997 | } |
| 1998 | return thread_sp; |
| 1999 | } |
| 2000 | |
| 2001 | lldb::ThreadSP |
| 2002 | ProcessGDBRemote::SetThreadStopInfo(StructuredData::Dictionary *thread_dict) { |
| 2003 | static ConstString g_key_tid("tid"); |
| 2004 | static ConstString g_key_name("name"); |
| 2005 | static ConstString g_key_reason("reason"); |
| 2006 | static ConstString g_key_metype("metype"); |
| 2007 | static ConstString g_key_medata("medata"); |
| 2008 | static ConstString g_key_qaddr("qaddr"); |
| 2009 | static ConstString g_key_dispatch_queue_t("dispatch_queue_t"); |
| 2010 | static ConstString g_key_associated_with_dispatch_queue( |
| 2011 | "associated_with_dispatch_queue"); |
| 2012 | static ConstString g_key_queue_name("qname"); |
| 2013 | static ConstString g_key_queue_kind("qkind"); |
| 2014 | static ConstString g_key_queue_serial_number("qserialnum"); |
| 2015 | static ConstString g_key_registers("registers"); |
| 2016 | static ConstString g_key_memory("memory"); |
| 2017 | static ConstString g_key_address("address"); |
| 2018 | static ConstString g_key_bytes("bytes"); |
| 2019 | static ConstString g_key_description("description"); |
| 2020 | static ConstString g_key_signal("signal"); |
| 2021 | |
| 2022 | // Stop with signal and thread info |
| 2023 | lldb::tid_t tid = LLDB_INVALID_THREAD_ID0; |
| 2024 | uint8_t signo = 0; |
| 2025 | std::string value; |
| 2026 | std::string thread_name; |
| 2027 | std::string reason; |
| 2028 | std::string description; |
| 2029 | uint32_t exc_type = 0; |
| 2030 | std::vector<addr_t> exc_data; |
| 2031 | addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2032 | ExpeditedRegisterMap expedited_register_map; |
| 2033 | bool queue_vars_valid = false; |
| 2034 | addr_t dispatch_queue_t = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2035 | LazyBool associated_with_dispatch_queue = eLazyBoolCalculate; |
| 2036 | std::string queue_name; |
| 2037 | QueueKind queue_kind = eQueueKindUnknown; |
| 2038 | uint64_t queue_serial_number = 0; |
| 2039 | // Iterate through all of the thread dictionary key/value pairs from the |
| 2040 | // structured data dictionary |
| 2041 | |
| 2042 | thread_dict->ForEach([this, &tid, &expedited_register_map, &thread_name, |
| 2043 | &signo, &reason, &description, &exc_type, &exc_data, |
| 2044 | &thread_dispatch_qaddr, &queue_vars_valid, |
| 2045 | &associated_with_dispatch_queue, &dispatch_queue_t, |
| 2046 | &queue_name, &queue_kind, &queue_serial_number]( |
| 2047 | ConstString key, |
| 2048 | StructuredData::Object *object) -> bool { |
| 2049 | if (key == g_key_tid) { |
| 2050 | // thread in big endian hex |
| 2051 | tid = object->GetIntegerValue(LLDB_INVALID_THREAD_ID0); |
| 2052 | } else if (key == g_key_metype) { |
| 2053 | // exception type in big endian hex |
| 2054 | exc_type = object->GetIntegerValue(0); |
| 2055 | } else if (key == g_key_medata) { |
| 2056 | // exception data in big endian hex |
| 2057 | StructuredData::Array *array = object->GetAsArray(); |
| 2058 | if (array) { |
| 2059 | array->ForEach([&exc_data](StructuredData::Object *object) -> bool { |
| 2060 | exc_data.push_back(object->GetIntegerValue()); |
| 2061 | return true; // Keep iterating through all array items |
| 2062 | }); |
| 2063 | } |
| 2064 | } else if (key == g_key_name) { |
| 2065 | thread_name = object->GetStringValue(); |
| 2066 | } else if (key == g_key_qaddr) { |
| 2067 | thread_dispatch_qaddr = object->GetIntegerValue(LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
| 2068 | } else if (key == g_key_queue_name) { |
| 2069 | queue_vars_valid = true; |
| 2070 | queue_name = object->GetStringValue(); |
| 2071 | } else if (key == g_key_queue_kind) { |
| 2072 | std::string queue_kind_str = object->GetStringValue(); |
| 2073 | if (queue_kind_str == "serial") { |
| 2074 | queue_vars_valid = true; |
| 2075 | queue_kind = eQueueKindSerial; |
| 2076 | } else if (queue_kind_str == "concurrent") { |
| 2077 | queue_vars_valid = true; |
| 2078 | queue_kind = eQueueKindConcurrent; |
| 2079 | } |
| 2080 | } else if (key == g_key_queue_serial_number) { |
| 2081 | queue_serial_number = object->GetIntegerValue(0); |
| 2082 | if (queue_serial_number != 0) |
| 2083 | queue_vars_valid = true; |
| 2084 | } else if (key == g_key_dispatch_queue_t) { |
| 2085 | dispatch_queue_t = object->GetIntegerValue(0); |
| 2086 | if (dispatch_queue_t != 0 && dispatch_queue_t != LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
| 2087 | queue_vars_valid = true; |
| 2088 | } else if (key == g_key_associated_with_dispatch_queue) { |
| 2089 | queue_vars_valid = true; |
| 2090 | bool associated = object->GetBooleanValue(); |
| 2091 | if (associated) |
| 2092 | associated_with_dispatch_queue = eLazyBoolYes; |
| 2093 | else |
| 2094 | associated_with_dispatch_queue = eLazyBoolNo; |
| 2095 | } else if (key == g_key_reason) { |
| 2096 | reason = object->GetStringValue(); |
| 2097 | } else if (key == g_key_description) { |
| 2098 | description = object->GetStringValue(); |
| 2099 | } else if (key == g_key_registers) { |
| 2100 | StructuredData::Dictionary *registers_dict = object->GetAsDictionary(); |
| 2101 | |
| 2102 | if (registers_dict) { |
| 2103 | registers_dict->ForEach( |
| 2104 | [&expedited_register_map](ConstString key, |
| 2105 | StructuredData::Object *object) -> bool { |
| 2106 | const uint32_t reg = |
| 2107 | StringConvert::ToUInt32(key.GetCString(), UINT32_MAX(4294967295U), 10); |
| 2108 | if (reg != UINT32_MAX(4294967295U)) |
| 2109 | expedited_register_map[reg] = object->GetStringValue(); |
| 2110 | return true; // Keep iterating through all array items |
| 2111 | }); |
| 2112 | } |
| 2113 | } else if (key == g_key_memory) { |
| 2114 | StructuredData::Array *array = object->GetAsArray(); |
| 2115 | if (array) { |
| 2116 | array->ForEach([this](StructuredData::Object *object) -> bool { |
| 2117 | StructuredData::Dictionary *mem_cache_dict = |
| 2118 | object->GetAsDictionary(); |
| 2119 | if (mem_cache_dict) { |
| 2120 | lldb::addr_t mem_cache_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2121 | if (mem_cache_dict->GetValueForKeyAsInteger<lldb::addr_t>( |
| 2122 | "address", mem_cache_addr)) { |
| 2123 | if (mem_cache_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL)) { |
| 2124 | llvm::StringRef str; |
| 2125 | if (mem_cache_dict->GetValueForKeyAsString("bytes", str)) { |
| 2126 | StringExtractor bytes(str); |
| 2127 | bytes.SetFilePos(0); |
| 2128 | |
| 2129 | const size_t byte_size = bytes.GetStringRef().size() / 2; |
| 2130 | DataBufferSP data_buffer_sp(new DataBufferHeap(byte_size, 0)); |
| 2131 | const size_t bytes_copied = |
| 2132 | bytes.GetHexBytes(data_buffer_sp->GetData(), 0); |
| 2133 | if (bytes_copied == byte_size) |
| 2134 | m_memory_cache.AddL1CacheData(mem_cache_addr, |
| 2135 | data_buffer_sp); |
| 2136 | } |
| 2137 | } |
| 2138 | } |
| 2139 | } |
| 2140 | return true; // Keep iterating through all array items |
| 2141 | }); |
| 2142 | } |
| 2143 | |
| 2144 | } else if (key == g_key_signal) |
| 2145 | signo = object->GetIntegerValue(LLDB_INVALID_SIGNAL_NUMBER(2147483647)); |
| 2146 | return true; // Keep iterating through all dictionary key/value pairs |
| 2147 | }); |
| 2148 | |
| 2149 | return SetThreadStopInfo(tid, expedited_register_map, signo, thread_name, |
| 2150 | reason, description, exc_type, exc_data, |
| 2151 | thread_dispatch_qaddr, queue_vars_valid, |
| 2152 | associated_with_dispatch_queue, dispatch_queue_t, |
| 2153 | queue_name, queue_kind, queue_serial_number); |
| 2154 | } |
| 2155 | |
| 2156 | StateType ProcessGDBRemote::SetThreadStopInfo(StringExtractor &stop_packet) { |
| 2157 | stop_packet.SetFilePos(0); |
| 2158 | const char stop_type = stop_packet.GetChar(); |
| 2159 | switch (stop_type) { |
| 2160 | case 'T': |
| 2161 | case 'S': { |
| 2162 | // This is a bit of a hack, but is is required. If we did exec, we need to |
| 2163 | // clear our thread lists and also know to rebuild our dynamic register |
| 2164 | // info before we lookup and threads and populate the expedited register |
| 2165 | // values so we need to know this right away so we can cleanup and update |
| 2166 | // our registers. |
| 2167 | const uint32_t stop_id = GetStopID(); |
| 2168 | if (stop_id == 0) { |
| 2169 | // Our first stop, make sure we have a process ID, and also make sure we |
| 2170 | // know about our registers |
| 2171 | if (GetID() == LLDB_INVALID_PROCESS_ID0) { |
| 2172 | lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID(); |
| 2173 | if (pid != LLDB_INVALID_PROCESS_ID0) |
| 2174 | SetID(pid); |
| 2175 | } |
| 2176 | BuildDynamicRegisterInfo(true); |
| 2177 | } |
| 2178 | // Stop with signal and thread info |
| 2179 | lldb::tid_t tid = LLDB_INVALID_THREAD_ID0; |
| 2180 | const uint8_t signo = stop_packet.GetHexU8(); |
| 2181 | llvm::StringRef key; |
| 2182 | llvm::StringRef value; |
| 2183 | std::string thread_name; |
| 2184 | std::string reason; |
| 2185 | std::string description; |
| 2186 | uint32_t exc_type = 0; |
| 2187 | std::vector<addr_t> exc_data; |
| 2188 | addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2189 | bool queue_vars_valid = |
| 2190 | false; // says if locals below that start with "queue_" are valid |
| 2191 | addr_t dispatch_queue_t = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2192 | LazyBool associated_with_dispatch_queue = eLazyBoolCalculate; |
| 2193 | std::string queue_name; |
| 2194 | QueueKind queue_kind = eQueueKindUnknown; |
| 2195 | uint64_t queue_serial_number = 0; |
| 2196 | ExpeditedRegisterMap expedited_register_map; |
| 2197 | while (stop_packet.GetNameColonValue(key, value)) { |
| 2198 | if (key.compare("metype") == 0) { |
| 2199 | // exception type in big endian hex |
| 2200 | value.getAsInteger(16, exc_type); |
| 2201 | } else if (key.compare("medata") == 0) { |
| 2202 | // exception data in big endian hex |
| 2203 | uint64_t x; |
| 2204 | value.getAsInteger(16, x); |
| 2205 | exc_data.push_back(x); |
| 2206 | } else if (key.compare("thread") == 0) { |
| 2207 | // thread in big endian hex |
| 2208 | if (value.getAsInteger(16, tid)) |
| 2209 | tid = LLDB_INVALID_THREAD_ID0; |
| 2210 | } else if (key.compare("threads") == 0) { |
| 2211 | std::lock_guard<std::recursive_mutex> guard( |
| 2212 | m_thread_list_real.GetMutex()); |
| 2213 | |
| 2214 | m_thread_ids.clear(); |
| 2215 | // A comma separated list of all threads in the current |
| 2216 | // process that includes the thread for this stop reply packet |
| 2217 | lldb::tid_t tid; |
| 2218 | while (!value.empty()) { |
| 2219 | llvm::StringRef tid_str; |
| 2220 | std::tie(tid_str, value) = value.split(','); |
| 2221 | if (tid_str.getAsInteger(16, tid)) |
| 2222 | tid = LLDB_INVALID_THREAD_ID0; |
| 2223 | m_thread_ids.push_back(tid); |
| 2224 | } |
| 2225 | } else if (key.compare("thread-pcs") == 0) { |
| 2226 | m_thread_pcs.clear(); |
| 2227 | // A comma separated list of all threads in the current |
| 2228 | // process that includes the thread for this stop reply packet |
| 2229 | lldb::addr_t pc; |
| 2230 | while (!value.empty()) { |
| 2231 | llvm::StringRef pc_str; |
| 2232 | std::tie(pc_str, value) = value.split(','); |
| 2233 | if (pc_str.getAsInteger(16, pc)) |
| 2234 | pc = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2235 | m_thread_pcs.push_back(pc); |
| 2236 | } |
| 2237 | } else if (key.compare("jstopinfo") == 0) { |
| 2238 | StringExtractor json_extractor(value); |
| 2239 | std::string json; |
| 2240 | // Now convert the HEX bytes into a string value |
| 2241 | json_extractor.GetHexByteString(json); |
| 2242 | |
| 2243 | // This JSON contains thread IDs and thread stop info for all threads. |
| 2244 | // It doesn't contain expedited registers, memory or queue info. |
| 2245 | m_jstopinfo_sp = StructuredData::ParseJSON(json); |
| 2246 | } else if (key.compare("hexname") == 0) { |
| 2247 | StringExtractor name_extractor(value); |
| 2248 | std::string name; |
| 2249 | // Now convert the HEX bytes into a string value |
| 2250 | name_extractor.GetHexByteString(thread_name); |
| 2251 | } else if (key.compare("name") == 0) { |
| 2252 | thread_name = value; |
| 2253 | } else if (key.compare("qaddr") == 0) { |
| 2254 | value.getAsInteger(16, thread_dispatch_qaddr); |
| 2255 | } else if (key.compare("dispatch_queue_t") == 0) { |
| 2256 | queue_vars_valid = true; |
| 2257 | value.getAsInteger(16, dispatch_queue_t); |
| 2258 | } else if (key.compare("qname") == 0) { |
| 2259 | queue_vars_valid = true; |
| 2260 | StringExtractor name_extractor(value); |
| 2261 | // Now convert the HEX bytes into a string value |
| 2262 | name_extractor.GetHexByteString(queue_name); |
| 2263 | } else if (key.compare("qkind") == 0) { |
| 2264 | queue_kind = llvm::StringSwitch<QueueKind>(value) |
| 2265 | .Case("serial", eQueueKindSerial) |
| 2266 | .Case("concurrent", eQueueKindConcurrent) |
| 2267 | .Default(eQueueKindUnknown); |
| 2268 | queue_vars_valid = queue_kind != eQueueKindUnknown; |
| 2269 | } else if (key.compare("qserialnum") == 0) { |
| 2270 | if (!value.getAsInteger(0, queue_serial_number)) |
| 2271 | queue_vars_valid = true; |
| 2272 | } else if (key.compare("reason") == 0) { |
| 2273 | reason = value; |
| 2274 | } else if (key.compare("description") == 0) { |
| 2275 | StringExtractor desc_extractor(value); |
| 2276 | // Now convert the HEX bytes into a string value |
| 2277 | desc_extractor.GetHexByteString(description); |
| 2278 | } else if (key.compare("memory") == 0) { |
| 2279 | // Expedited memory. GDB servers can choose to send back expedited |
| 2280 | // memory that can populate the L1 memory cache in the process so that |
| 2281 | // things like the frame pointer backchain can be expedited. This will |
| 2282 | // help stack backtracing be more efficient by not having to send as |
| 2283 | // many memory read requests down the remote GDB server. |
| 2284 | |
| 2285 | // Key/value pair format: memory:<addr>=<bytes>; |
| 2286 | // <addr> is a number whose base will be interpreted by the prefix: |
| 2287 | // "0x[0-9a-fA-F]+" for hex |
| 2288 | // "0[0-7]+" for octal |
| 2289 | // "[1-9]+" for decimal |
| 2290 | // <bytes> is native endian ASCII hex bytes just like the register |
| 2291 | // values |
| 2292 | llvm::StringRef addr_str, bytes_str; |
| 2293 | std::tie(addr_str, bytes_str) = value.split('='); |
| 2294 | if (!addr_str.empty() && !bytes_str.empty()) { |
| 2295 | lldb::addr_t mem_cache_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2296 | if (!addr_str.getAsInteger(0, mem_cache_addr)) { |
| 2297 | StringExtractor bytes(bytes_str); |
| 2298 | const size_t byte_size = bytes.GetBytesLeft() / 2; |
| 2299 | DataBufferSP data_buffer_sp(new DataBufferHeap(byte_size, 0)); |
| 2300 | const size_t bytes_copied = |
| 2301 | bytes.GetHexBytes(data_buffer_sp->GetData(), 0); |
| 2302 | if (bytes_copied == byte_size) |
| 2303 | m_memory_cache.AddL1CacheData(mem_cache_addr, data_buffer_sp); |
| 2304 | } |
| 2305 | } |
| 2306 | } else if (key.compare("watch") == 0 || key.compare("rwatch") == 0 || |
| 2307 | key.compare("awatch") == 0) { |
| 2308 | // Support standard GDB remote stop reply packet 'TAAwatch:addr' |
| 2309 | lldb::addr_t wp_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2310 | value.getAsInteger(16, wp_addr); |
| 2311 | |
| 2312 | WatchpointSP wp_sp = |
| 2313 | GetTarget().GetWatchpointList().FindByAddress(wp_addr); |
| 2314 | uint32_t wp_index = LLDB_INVALID_INDEX32(4294967295U); |
| 2315 | |
| 2316 | if (wp_sp) |
| 2317 | wp_index = wp_sp->GetHardwareIndex(); |
| 2318 | |
| 2319 | reason = "watchpoint"; |
| 2320 | StreamString ostr; |
| 2321 | ostr.Printf("%" PRIu64"l" "u" " %" PRIu32"u", wp_addr, wp_index); |
| 2322 | description = ostr.GetString(); |
| 2323 | } else if (key.compare("library") == 0) { |
| 2324 | LoadModules(); |
| 2325 | } else if (key.size() == 2 && ::isxdigit(key[0]) && ::isxdigit(key[1])) { |
| 2326 | uint32_t reg = UINT32_MAX(4294967295U); |
| 2327 | if (!key.getAsInteger(16, reg)) |
| 2328 | expedited_register_map[reg] = std::move(value); |
| 2329 | } |
| 2330 | } |
| 2331 | |
| 2332 | if (tid == LLDB_INVALID_THREAD_ID0) { |
| 2333 | // A thread id may be invalid if the response is old style 'S' packet |
| 2334 | // which does not provide the |
| 2335 | // thread information. So update the thread list and choose the first |
| 2336 | // one. |
| 2337 | UpdateThreadIDList(); |
| 2338 | |
| 2339 | if (!m_thread_ids.empty()) { |
| 2340 | tid = m_thread_ids.front(); |
| 2341 | } |
| 2342 | } |
| 2343 | |
| 2344 | ThreadSP thread_sp = SetThreadStopInfo( |
| 2345 | tid, expedited_register_map, signo, thread_name, reason, description, |
| 2346 | exc_type, exc_data, thread_dispatch_qaddr, queue_vars_valid, |
| 2347 | associated_with_dispatch_queue, dispatch_queue_t, queue_name, |
| 2348 | queue_kind, queue_serial_number); |
| 2349 | |
| 2350 | return eStateStopped; |
| 2351 | } break; |
| 2352 | |
| 2353 | case 'W': |
| 2354 | case 'X': |
| 2355 | // process exited |
| 2356 | return eStateExited; |
| 2357 | |
| 2358 | default: |
| 2359 | break; |
| 2360 | } |
| 2361 | return eStateInvalid; |
| 2362 | } |
| 2363 | |
| 2364 | void ProcessGDBRemote::RefreshStateAfterStop() { |
| 2365 | std::lock_guard<std::recursive_mutex> guard(m_thread_list_real.GetMutex()); |
| 2366 | |
| 2367 | m_thread_ids.clear(); |
| 2368 | m_thread_pcs.clear(); |
| 2369 | // Set the thread stop info. It might have a "threads" key whose value is a |
| 2370 | // list of all thread IDs in the current process, so m_thread_ids might get |
| 2371 | // set. |
| 2372 | |
| 2373 | // Scope for the lock |
| 2374 | { |
| 2375 | // Lock the thread stack while we access it |
| 2376 | std::lock_guard<std::recursive_mutex> guard(m_last_stop_packet_mutex); |
| 2377 | // Get the number of stop packets on the stack |
| 2378 | int nItems = m_stop_packet_stack.size(); |
| 2379 | // Iterate over them |
| 2380 | for (int i = 0; i < nItems; i++) { |
| 2381 | // Get the thread stop info |
| 2382 | StringExtractorGDBRemote stop_info = m_stop_packet_stack[i]; |
| 2383 | // Process thread stop info |
| 2384 | SetThreadStopInfo(stop_info); |
| 2385 | } |
| 2386 | // Clear the thread stop stack |
| 2387 | m_stop_packet_stack.clear(); |
| 2388 | } |
| 2389 | |
| 2390 | // Check to see if SetThreadStopInfo() filled in m_thread_ids? |
| 2391 | if (m_thread_ids.empty()) { |
| 2392 | // No, we need to fetch the thread list manually |
| 2393 | UpdateThreadIDList(); |
| 2394 | } |
| 2395 | |
| 2396 | // If we have queried for a default thread id |
| 2397 | if (m_initial_tid != LLDB_INVALID_THREAD_ID0) { |
| 2398 | m_thread_list.SetSelectedThreadByID(m_initial_tid); |
| 2399 | m_initial_tid = LLDB_INVALID_THREAD_ID0; |
| 2400 | } |
| 2401 | |
| 2402 | // Let all threads recover from stopping and do any clean up based on the |
| 2403 | // previous thread state (if any). |
| 2404 | m_thread_list_real.RefreshStateAfterStop(); |
| 2405 | } |
| 2406 | |
| 2407 | Status ProcessGDBRemote::DoHalt(bool &caused_stop) { |
| 2408 | Status error; |
| 2409 | |
| 2410 | if (m_public_state.GetValue() == eStateAttaching) { |
| 2411 | // We are being asked to halt during an attach. We need to just close our |
| 2412 | // file handle and debugserver will go away, and we can be done... |
| 2413 | m_gdb_comm.Disconnect(); |
| 2414 | } else |
| 2415 | caused_stop = m_gdb_comm.Interrupt(); |
| 2416 | return error; |
| 2417 | } |
| 2418 | |
| 2419 | Status ProcessGDBRemote::DoDetach(bool keep_stopped) { |
| 2420 | Status error; |
| 2421 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 2422 | if (log) |
| 2423 | log->Printf("ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped); |
| 2424 | |
| 2425 | error = m_gdb_comm.Detach(keep_stopped); |
| 2426 | if (log) { |
| 2427 | if (error.Success()) |
| 2428 | log->PutCString( |
| 2429 | "ProcessGDBRemote::DoDetach() detach packet sent successfully"); |
| 2430 | else |
| 2431 | log->Printf("ProcessGDBRemote::DoDetach() detach packet send failed: %s", |
| 2432 | error.AsCString() ? error.AsCString() : "<unknown error>"); |
| 2433 | } |
| 2434 | |
| 2435 | if (!error.Success()) |
| 2436 | return error; |
| 2437 | |
| 2438 | // Sleep for one second to let the process get all detached... |
| 2439 | StopAsyncThread(); |
| 2440 | |
| 2441 | SetPrivateState(eStateDetached); |
| 2442 | ResumePrivateStateThread(); |
| 2443 | |
| 2444 | // KillDebugserverProcess (); |
| 2445 | return error; |
| 2446 | } |
| 2447 | |
| 2448 | Status ProcessGDBRemote::DoDestroy() { |
| 2449 | Status error; |
| 2450 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 2451 | if (log) |
| 2452 | log->Printf("ProcessGDBRemote::DoDestroy()"); |
| 2453 | |
| 2454 | // There is a bug in older iOS debugservers where they don't shut down the |
| 2455 | // process they are debugging properly. If the process is sitting at a |
| 2456 | // breakpoint or an exception, this can cause problems with restarting. So |
| 2457 | // we check to see if any of our threads are stopped at a breakpoint, and if |
| 2458 | // so we remove all the breakpoints, resume the process, and THEN destroy it |
| 2459 | // again. |
| 2460 | // |
| 2461 | // Note, we don't have a good way to test the version of debugserver, but I |
| 2462 | // happen to know that the set of all the iOS debugservers which don't |
| 2463 | // support GetThreadSuffixSupported() and that of the debugservers with this |
| 2464 | // bug are equal. There really should be a better way to test this! |
| 2465 | // |
| 2466 | // We also use m_destroy_tried_resuming to make sure we only do this once, if |
| 2467 | // we resume and then halt and get called here to destroy again and we're |
| 2468 | // still at a breakpoint or exception, then we should just do the straight- |
| 2469 | // forward kill. |
| 2470 | // |
| 2471 | // And of course, if we weren't able to stop the process by the time we get |
| 2472 | // here, it isn't necessary (or helpful) to do any of this. |
| 2473 | |
| 2474 | if (!m_gdb_comm.GetThreadSuffixSupported() && |
| 2475 | m_public_state.GetValue() != eStateRunning) { |
| 2476 | PlatformSP platform_sp = GetTarget().GetPlatform(); |
| 2477 | |
| 2478 | // FIXME: These should be ConstStrings so we aren't doing strcmp'ing. |
| 2479 | if (platform_sp && platform_sp->GetName() && |
| 2480 | platform_sp->GetName() == PlatformRemoteiOS::GetPluginNameStatic()) { |
| 2481 | if (m_destroy_tried_resuming) { |
| 2482 | if (log) |
| 2483 | log->PutCString("ProcessGDBRemote::DoDestroy() - Tried resuming to " |
| 2484 | "destroy once already, not doing it again."); |
| 2485 | } else { |
| 2486 | // At present, the plans are discarded and the breakpoints disabled |
| 2487 | // Process::Destroy, but we really need it to happen here and it |
| 2488 | // doesn't matter if we do it twice. |
| 2489 | m_thread_list.DiscardThreadPlans(); |
| 2490 | DisableAllBreakpointSites(); |
| 2491 | |
| 2492 | bool stop_looks_like_crash = false; |
| 2493 | ThreadList &threads = GetThreadList(); |
| 2494 | |
| 2495 | { |
| 2496 | std::lock_guard<std::recursive_mutex> guard(threads.GetMutex()); |
| 2497 | |
| 2498 | size_t num_threads = threads.GetSize(); |
| 2499 | for (size_t i = 0; i < num_threads; i++) { |
| 2500 | ThreadSP thread_sp = threads.GetThreadAtIndex(i); |
| 2501 | StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); |
| 2502 | StopReason reason = eStopReasonInvalid; |
| 2503 | if (stop_info_sp) |
| 2504 | reason = stop_info_sp->GetStopReason(); |
| 2505 | if (reason == eStopReasonBreakpoint || |
| 2506 | reason == eStopReasonException) { |
| 2507 | if (log) |
| 2508 | log->Printf( |
| 2509 | "ProcessGDBRemote::DoDestroy() - thread: 0x%4.4" PRIx64"l" "x" |
| 2510 | " stopped with reason: %s.", |
| 2511 | thread_sp->GetProtocolID(), stop_info_sp->GetDescription()); |
| 2512 | stop_looks_like_crash = true; |
| 2513 | break; |
| 2514 | } |
| 2515 | } |
| 2516 | } |
| 2517 | |
| 2518 | if (stop_looks_like_crash) { |
| 2519 | if (log) |
| 2520 | log->PutCString("ProcessGDBRemote::DoDestroy() - Stopped at a " |
| 2521 | "breakpoint, continue and then kill."); |
| 2522 | m_destroy_tried_resuming = true; |
| 2523 | |
| 2524 | // If we are going to run again before killing, it would be good to |
| 2525 | // suspend all the threads before resuming so they won't get into |
| 2526 | // more trouble. Sadly, for the threads stopped with the breakpoint |
| 2527 | // or exception, the exception doesn't get cleared if it is |
| 2528 | // suspended, so we do have to run the risk of letting those threads |
| 2529 | // proceed a bit. |
| 2530 | |
| 2531 | { |
| 2532 | std::lock_guard<std::recursive_mutex> guard(threads.GetMutex()); |
| 2533 | |
| 2534 | size_t num_threads = threads.GetSize(); |
| 2535 | for (size_t i = 0; i < num_threads; i++) { |
| 2536 | ThreadSP thread_sp = threads.GetThreadAtIndex(i); |
| 2537 | StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); |
| 2538 | StopReason reason = eStopReasonInvalid; |
| 2539 | if (stop_info_sp) |
| 2540 | reason = stop_info_sp->GetStopReason(); |
| 2541 | if (reason != eStopReasonBreakpoint && |
| 2542 | reason != eStopReasonException) { |
| 2543 | if (log) |
| 2544 | log->Printf("ProcessGDBRemote::DoDestroy() - Suspending " |
| 2545 | "thread: 0x%4.4" PRIx64"l" "x" " before running.", |
| 2546 | thread_sp->GetProtocolID()); |
| 2547 | thread_sp->SetResumeState(eStateSuspended); |
| 2548 | } |
| 2549 | } |
| 2550 | } |
| 2551 | Resume(); |
| 2552 | return Destroy(false); |
| 2553 | } |
| 2554 | } |
| 2555 | } |
| 2556 | } |
| 2557 | |
| 2558 | // Interrupt if our inferior is running... |
| 2559 | int exit_status = SIGABRT6; |
| 2560 | std::string exit_string; |
| 2561 | |
| 2562 | if (m_gdb_comm.IsConnected()) { |
| 2563 | if (m_public_state.GetValue() != eStateAttaching) { |
| 2564 | StringExtractorGDBRemote response; |
| 2565 | bool send_async = true; |
| 2566 | GDBRemoteCommunication::ScopedTimeout(m_gdb_comm, |
| 2567 | std::chrono::seconds(3)); |
| 2568 | |
| 2569 | if (m_gdb_comm.SendPacketAndWaitForResponse("k", response, send_async) == |
| 2570 | GDBRemoteCommunication::PacketResult::Success) { |
| 2571 | char packet_cmd = response.GetChar(0); |
| 2572 | |
| 2573 | if (packet_cmd == 'W' || packet_cmd == 'X') { |
| 2574 | #if defined(__APPLE__) |
| 2575 | // For Native processes on Mac OS X, we launch through the Host |
| 2576 | // Platform, then hand the process off to debugserver, which becomes |
| 2577 | // the parent process through "PT_ATTACH". Then when we go to kill |
| 2578 | // the process on Mac OS X we call ptrace(PT_KILL) to kill it, then |
| 2579 | // we call waitpid which returns with no error and the correct |
| 2580 | // status. But amusingly enough that doesn't seem to actually reap |
| 2581 | // the process, but instead it is left around as a Zombie. Probably |
| 2582 | // the kernel is in the process of switching ownership back to lldb |
| 2583 | // which was the original parent, and gets confused in the handoff. |
| 2584 | // Anyway, so call waitpid here to finally reap it. |
| 2585 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
| 2586 | if (platform_sp && platform_sp->IsHost()) { |
| 2587 | int status; |
| 2588 | ::pid_t reap_pid; |
| 2589 | reap_pid = waitpid(GetID(), &status, WNOHANG1); |
| 2590 | if (log) |
| 2591 | log->Printf("Reaped pid: %d, status: %d.\n", reap_pid, status); |
| 2592 | } |
| 2593 | #endif |
| 2594 | SetLastStopPacket(response); |
| 2595 | ClearThreadIDList(); |
| 2596 | exit_status = response.GetHexU8(); |
| 2597 | } else { |
| 2598 | if (log) |
| 2599 | log->Printf("ProcessGDBRemote::DoDestroy - got unexpected response " |
| 2600 | "to k packet: %s", |
| 2601 | response.GetStringRef().c_str()); |
| 2602 | exit_string.assign("got unexpected response to k packet: "); |
| 2603 | exit_string.append(response.GetStringRef()); |
| 2604 | } |
| 2605 | } else { |
| 2606 | if (log) |
| 2607 | log->Printf("ProcessGDBRemote::DoDestroy - failed to send k packet"); |
| 2608 | exit_string.assign("failed to send the k packet"); |
| 2609 | } |
| 2610 | } else { |
| 2611 | if (log) |
| 2612 | log->Printf("ProcessGDBRemote::DoDestroy - killed or interrupted while " |
| 2613 | "attaching"); |
| 2614 | exit_string.assign("killed or interrupted while attaching."); |
| 2615 | } |
| 2616 | } else { |
| 2617 | // If we missed setting the exit status on the way out, do it here. |
| 2618 | // NB set exit status can be called multiple times, the first one sets the |
| 2619 | // status. |
| 2620 | exit_string.assign("destroying when not connected to debugserver"); |
| 2621 | } |
| 2622 | |
| 2623 | SetExitStatus(exit_status, exit_string.c_str()); |
| 2624 | |
| 2625 | StopAsyncThread(); |
| 2626 | KillDebugserverProcess(); |
| 2627 | return error; |
| 2628 | } |
| 2629 | |
| 2630 | void ProcessGDBRemote::SetLastStopPacket( |
| 2631 | const StringExtractorGDBRemote &response) { |
| 2632 | const bool did_exec = |
| 2633 | response.GetStringRef().find(";reason:exec;") != std::string::npos; |
| 2634 | if (did_exec) { |
| 2635 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 2636 | if (log) |
| 2637 | log->Printf("ProcessGDBRemote::SetLastStopPacket () - detected exec"); |
| 2638 | |
| 2639 | m_thread_list_real.Clear(); |
| 2640 | m_thread_list.Clear(); |
| 2641 | BuildDynamicRegisterInfo(true); |
| 2642 | m_gdb_comm.ResetDiscoverableSettings(did_exec); |
| 2643 | } |
| 2644 | |
| 2645 | // Scope the lock |
| 2646 | { |
| 2647 | // Lock the thread stack while we access it |
| 2648 | std::lock_guard<std::recursive_mutex> guard(m_last_stop_packet_mutex); |
| 2649 | |
| 2650 | // We are are not using non-stop mode, there can only be one last stop |
| 2651 | // reply packet, so clear the list. |
| 2652 | if (GetTarget().GetNonStopModeEnabled() == false) |
| 2653 | m_stop_packet_stack.clear(); |
| 2654 | |
| 2655 | // Add this stop packet to the stop packet stack This stack will get popped |
| 2656 | // and examined when we switch to the Stopped state |
| 2657 | m_stop_packet_stack.push_back(response); |
| 2658 | } |
| 2659 | } |
| 2660 | |
| 2661 | void ProcessGDBRemote::SetUnixSignals(const UnixSignalsSP &signals_sp) { |
| 2662 | Process::SetUnixSignals(std::make_shared<GDBRemoteSignals>(signals_sp)); |
| 2663 | } |
| 2664 | |
| 2665 | //------------------------------------------------------------------ |
| 2666 | // Process Queries |
| 2667 | //------------------------------------------------------------------ |
| 2668 | |
| 2669 | bool ProcessGDBRemote::IsAlive() { |
| 2670 | return m_gdb_comm.IsConnected() && Process::IsAlive(); |
| 2671 | } |
| 2672 | |
| 2673 | addr_t ProcessGDBRemote::GetImageInfoAddress() { |
| 2674 | // request the link map address via the $qShlibInfoAddr packet |
| 2675 | lldb::addr_t addr = m_gdb_comm.GetShlibInfoAddr(); |
| 2676 | |
| 2677 | // the loaded module list can also provides a link map address |
| 2678 | if (addr == LLDB_INVALID_ADDRESS(18446744073709551615UL)) { |
| 2679 | LoadedModuleInfoList list; |
| 2680 | if (GetLoadedModuleList(list).Success()) |
| 2681 | addr = list.m_link_map; |
| 2682 | } |
| 2683 | |
| 2684 | return addr; |
| 2685 | } |
| 2686 | |
| 2687 | void ProcessGDBRemote::WillPublicStop() { |
| 2688 | // See if the GDB remote client supports the JSON threads info. If so, we |
| 2689 | // gather stop info for all threads, expedited registers, expedited memory, |
| 2690 | // runtime queue information (iOS and MacOSX only), and more. Expediting |
| 2691 | // memory will help stack backtracing be much faster. Expediting registers |
| 2692 | // will make sure we don't have to read the thread registers for GPRs. |
| 2693 | m_jthreadsinfo_sp = m_gdb_comm.GetThreadsInfo(); |
| 2694 | |
| 2695 | if (m_jthreadsinfo_sp) { |
| 2696 | // Now set the stop info for each thread and also expedite any registers |
| 2697 | // and memory that was in the jThreadsInfo response. |
| 2698 | StructuredData::Array *thread_infos = m_jthreadsinfo_sp->GetAsArray(); |
| 2699 | if (thread_infos) { |
| 2700 | const size_t n = thread_infos->GetSize(); |
| 2701 | for (size_t i = 0; i < n; ++i) { |
| 2702 | StructuredData::Dictionary *thread_dict = |
| 2703 | thread_infos->GetItemAtIndex(i)->GetAsDictionary(); |
| 2704 | if (thread_dict) |
| 2705 | SetThreadStopInfo(thread_dict); |
| 2706 | } |
| 2707 | } |
| 2708 | } |
| 2709 | } |
| 2710 | |
| 2711 | //------------------------------------------------------------------ |
| 2712 | // Process Memory |
| 2713 | //------------------------------------------------------------------ |
| 2714 | size_t ProcessGDBRemote::DoReadMemory(addr_t addr, void *buf, size_t size, |
| 2715 | Status &error) { |
| 2716 | GetMaxMemorySize(); |
| 2717 | bool binary_memory_read = m_gdb_comm.GetxPacketSupported(); |
| 2718 | // M and m packets take 2 bytes for 1 byte of memory |
| 2719 | size_t max_memory_size = |
| 2720 | binary_memory_read ? m_max_memory_size : m_max_memory_size / 2; |
| 2721 | if (size > max_memory_size) { |
| 2722 | // Keep memory read sizes down to a sane limit. This function will be |
| 2723 | // called multiple times in order to complete the task by |
| 2724 | // lldb_private::Process so it is ok to do this. |
| 2725 | size = max_memory_size; |
| 2726 | } |
| 2727 | |
| 2728 | char packet[64]; |
| 2729 | int packet_len; |
| 2730 | packet_len = ::snprintf(packet, sizeof(packet), "%c%" PRIx64"l" "x" ",%" PRIx64"l" "x", |
| 2731 | binary_memory_read ? 'x' : 'm', (uint64_t)addr, |
| 2732 | (uint64_t)size); |
| 2733 | assert(packet_len + 1 < (int)sizeof(packet))((packet_len + 1 < (int)sizeof(packet)) ? static_cast<void > (0) : __assert_fail ("packet_len + 1 < (int)sizeof(packet)" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 2733, __PRETTY_FUNCTION__)); |
| 2734 | UNUSED_IF_ASSERT_DISABLED(packet_len)((void)(packet_len)); |
| 2735 | StringExtractorGDBRemote response; |
| 2736 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet, response, true) == |
| 2737 | GDBRemoteCommunication::PacketResult::Success) { |
| 2738 | if (response.IsNormalResponse()) { |
| 2739 | error.Clear(); |
| 2740 | if (binary_memory_read) { |
| 2741 | // The lower level GDBRemoteCommunication packet receive layer has |
| 2742 | // already de-quoted any 0x7d character escaping that was present in |
| 2743 | // the packet |
| 2744 | |
| 2745 | size_t data_received_size = response.GetBytesLeft(); |
| 2746 | if (data_received_size > size) { |
| 2747 | // Don't write past the end of BUF if the remote debug server gave us |
| 2748 | // too much data for some reason. |
| 2749 | data_received_size = size; |
| 2750 | } |
| 2751 | memcpy(buf, response.GetStringRef().data(), data_received_size); |
| 2752 | return data_received_size; |
| 2753 | } else { |
| 2754 | return response.GetHexBytes( |
| 2755 | llvm::MutableArrayRef<uint8_t>((uint8_t *)buf, size), '\xdd'); |
| 2756 | } |
| 2757 | } else if (response.IsErrorResponse()) |
| 2758 | error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64"l" "x", addr); |
| 2759 | else if (response.IsUnsupportedResponse()) |
| 2760 | error.SetErrorStringWithFormat( |
| 2761 | "GDB server does not support reading memory"); |
| 2762 | else |
| 2763 | error.SetErrorStringWithFormat( |
| 2764 | "unexpected response to GDB server memory read packet '%s': '%s'", |
| 2765 | packet, response.GetStringRef().c_str()); |
| 2766 | } else { |
| 2767 | error.SetErrorStringWithFormat("failed to send packet: '%s'", packet); |
| 2768 | } |
| 2769 | return 0; |
| 2770 | } |
| 2771 | |
| 2772 | Status ProcessGDBRemote::WriteObjectFile( |
| 2773 | std::vector<ObjectFile::LoadableData> entries) { |
| 2774 | Status error; |
| 2775 | // Sort the entries by address because some writes, like those to flash |
| 2776 | // memory, must happen in order of increasing address. |
| 2777 | std::stable_sort( |
| 2778 | std::begin(entries), std::end(entries), |
| 2779 | [](const ObjectFile::LoadableData a, const ObjectFile::LoadableData b) { |
| 2780 | return a.Dest < b.Dest; |
| 2781 | }); |
| 2782 | m_allow_flash_writes = true; |
| 2783 | error = Process::WriteObjectFile(entries); |
| 2784 | if (error.Success()) |
| 2785 | error = FlashDone(); |
| 2786 | else |
| 2787 | // Even though some of the writing failed, try to send a flash done if some |
| 2788 | // of the writing succeeded so the flash state is reset to normal, but |
| 2789 | // don't stomp on the error status that was set in the write failure since |
| 2790 | // that's the one we want to report back. |
| 2791 | FlashDone(); |
| 2792 | m_allow_flash_writes = false; |
| 2793 | return error; |
| 2794 | } |
| 2795 | |
| 2796 | bool ProcessGDBRemote::HasErased(FlashRange range) { |
| 2797 | auto size = m_erased_flash_ranges.GetSize(); |
| 2798 | for (size_t i = 0; i < size; ++i) |
| 2799 | if (m_erased_flash_ranges.GetEntryAtIndex(i)->Contains(range)) |
| 2800 | return true; |
| 2801 | return false; |
| 2802 | } |
| 2803 | |
| 2804 | Status ProcessGDBRemote::FlashErase(lldb::addr_t addr, size_t size) { |
| 2805 | Status status; |
| 2806 | |
| 2807 | MemoryRegionInfo region; |
| 2808 | status = GetMemoryRegionInfo(addr, region); |
| 2809 | if (!status.Success()) |
| 2810 | return status; |
| 2811 | |
| 2812 | // The gdb spec doesn't say if erasures are allowed across multiple regions, |
| 2813 | // but we'll disallow it to be safe and to keep the logic simple by worring |
| 2814 | // about only one region's block size. DoMemoryWrite is this function's |
| 2815 | // primary user, and it can easily keep writes within a single memory region |
| 2816 | if (addr + size > region.GetRange().GetRangeEnd()) { |
| 2817 | status.SetErrorString("Unable to erase flash in multiple regions"); |
| 2818 | return status; |
| 2819 | } |
| 2820 | |
| 2821 | uint64_t blocksize = region.GetBlocksize(); |
| 2822 | if (blocksize == 0) { |
| 2823 | status.SetErrorString("Unable to erase flash because blocksize is 0"); |
| 2824 | return status; |
| 2825 | } |
| 2826 | |
| 2827 | // Erasures can only be done on block boundary adresses, so round down addr |
| 2828 | // and round up size |
| 2829 | lldb::addr_t block_start_addr = addr - (addr % blocksize); |
| 2830 | size += (addr - block_start_addr); |
| 2831 | if ((size % blocksize) != 0) |
| 2832 | size += (blocksize - size % blocksize); |
| 2833 | |
| 2834 | FlashRange range(block_start_addr, size); |
| 2835 | |
| 2836 | if (HasErased(range)) |
| 2837 | return status; |
| 2838 | |
| 2839 | // We haven't erased the entire range, but we may have erased part of it. |
| 2840 | // (e.g., block A is already erased and range starts in A and ends in B). So, |
| 2841 | // adjust range if necessary to exclude already erased blocks. |
| 2842 | if (!m_erased_flash_ranges.IsEmpty()) { |
| 2843 | // Assuming that writes and erasures are done in increasing addr order, |
| 2844 | // because that is a requirement of the vFlashWrite command. Therefore, we |
| 2845 | // only need to look at the last range in the list for overlap. |
| 2846 | const auto &last_range = *m_erased_flash_ranges.Back(); |
| 2847 | if (range.GetRangeBase() < last_range.GetRangeEnd()) { |
| 2848 | auto overlap = last_range.GetRangeEnd() - range.GetRangeBase(); |
| 2849 | // overlap will be less than range.GetByteSize() or else HasErased() |
| 2850 | // would have been true |
| 2851 | range.SetByteSize(range.GetByteSize() - overlap); |
| 2852 | range.SetRangeBase(range.GetRangeBase() + overlap); |
| 2853 | } |
| 2854 | } |
| 2855 | |
| 2856 | StreamString packet; |
| 2857 | packet.Printf("vFlashErase:%" PRIx64"l" "x" ",%" PRIx64"l" "x", range.GetRangeBase(), |
| 2858 | (uint64_t)range.GetByteSize()); |
| 2859 | |
| 2860 | StringExtractorGDBRemote response; |
| 2861 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
| 2862 | true) == |
| 2863 | GDBRemoteCommunication::PacketResult::Success) { |
| 2864 | if (response.IsOKResponse()) { |
| 2865 | m_erased_flash_ranges.Insert(range, true); |
| 2866 | } else { |
| 2867 | if (response.IsErrorResponse()) |
| 2868 | status.SetErrorStringWithFormat("flash erase failed for 0x%" PRIx64"l" "x", |
| 2869 | addr); |
| 2870 | else if (response.IsUnsupportedResponse()) |
| 2871 | status.SetErrorStringWithFormat("GDB server does not support flashing"); |
| 2872 | else |
| 2873 | status.SetErrorStringWithFormat( |
| 2874 | "unexpected response to GDB server flash erase packet '%s': '%s'", |
| 2875 | packet.GetData(), response.GetStringRef().c_str()); |
| 2876 | } |
| 2877 | } else { |
| 2878 | status.SetErrorStringWithFormat("failed to send packet: '%s'", |
| 2879 | packet.GetData()); |
| 2880 | } |
| 2881 | return status; |
| 2882 | } |
| 2883 | |
| 2884 | Status ProcessGDBRemote::FlashDone() { |
| 2885 | Status status; |
| 2886 | // If we haven't erased any blocks, then we must not have written anything |
| 2887 | // either, so there is no need to actually send a vFlashDone command |
| 2888 | if (m_erased_flash_ranges.IsEmpty()) |
| 2889 | return status; |
| 2890 | StringExtractorGDBRemote response; |
| 2891 | if (m_gdb_comm.SendPacketAndWaitForResponse("vFlashDone", response, true) == |
| 2892 | GDBRemoteCommunication::PacketResult::Success) { |
| 2893 | if (response.IsOKResponse()) { |
| 2894 | m_erased_flash_ranges.Clear(); |
| 2895 | } else { |
| 2896 | if (response.IsErrorResponse()) |
| 2897 | status.SetErrorStringWithFormat("flash done failed"); |
| 2898 | else if (response.IsUnsupportedResponse()) |
| 2899 | status.SetErrorStringWithFormat("GDB server does not support flashing"); |
| 2900 | else |
| 2901 | status.SetErrorStringWithFormat( |
| 2902 | "unexpected response to GDB server flash done packet: '%s'", |
| 2903 | response.GetStringRef().c_str()); |
| 2904 | } |
| 2905 | } else { |
| 2906 | status.SetErrorStringWithFormat("failed to send flash done packet"); |
| 2907 | } |
| 2908 | return status; |
| 2909 | } |
| 2910 | |
| 2911 | size_t ProcessGDBRemote::DoWriteMemory(addr_t addr, const void *buf, |
| 2912 | size_t size, Status &error) { |
| 2913 | GetMaxMemorySize(); |
| 2914 | // M and m packets take 2 bytes for 1 byte of memory |
| 2915 | size_t max_memory_size = m_max_memory_size / 2; |
| 2916 | if (size > max_memory_size) { |
| 2917 | // Keep memory read sizes down to a sane limit. This function will be |
| 2918 | // called multiple times in order to complete the task by |
| 2919 | // lldb_private::Process so it is ok to do this. |
| 2920 | size = max_memory_size; |
| 2921 | } |
| 2922 | |
| 2923 | StreamGDBRemote packet; |
| 2924 | |
| 2925 | MemoryRegionInfo region; |
| 2926 | Status region_status = GetMemoryRegionInfo(addr, region); |
| 2927 | |
| 2928 | bool is_flash = |
| 2929 | region_status.Success() && region.GetFlash() == MemoryRegionInfo::eYes; |
| 2930 | |
| 2931 | if (is_flash) { |
| 2932 | if (!m_allow_flash_writes) { |
| 2933 | error.SetErrorString("Writing to flash memory is not allowed"); |
| 2934 | return 0; |
| 2935 | } |
| 2936 | // Keep the write within a flash memory region |
| 2937 | if (addr + size > region.GetRange().GetRangeEnd()) |
| 2938 | size = region.GetRange().GetRangeEnd() - addr; |
| 2939 | // Flash memory must be erased before it can be written |
| 2940 | error = FlashErase(addr, size); |
| 2941 | if (!error.Success()) |
| 2942 | return 0; |
| 2943 | packet.Printf("vFlashWrite:%" PRIx64"l" "x" ":", addr); |
| 2944 | packet.PutEscapedBytes(buf, size); |
| 2945 | } else { |
| 2946 | packet.Printf("M%" PRIx64"l" "x" ",%" PRIx64"l" "x" ":", addr, (uint64_t)size); |
| 2947 | packet.PutBytesAsRawHex8(buf, size, endian::InlHostByteOrder(), |
| 2948 | endian::InlHostByteOrder()); |
| 2949 | } |
| 2950 | StringExtractorGDBRemote response; |
| 2951 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
| 2952 | true) == |
| 2953 | GDBRemoteCommunication::PacketResult::Success) { |
| 2954 | if (response.IsOKResponse()) { |
| 2955 | error.Clear(); |
| 2956 | return size; |
| 2957 | } else if (response.IsErrorResponse()) |
| 2958 | error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64"l" "x", |
| 2959 | addr); |
| 2960 | else if (response.IsUnsupportedResponse()) |
| 2961 | error.SetErrorStringWithFormat( |
| 2962 | "GDB server does not support writing memory"); |
| 2963 | else |
| 2964 | error.SetErrorStringWithFormat( |
| 2965 | "unexpected response to GDB server memory write packet '%s': '%s'", |
| 2966 | packet.GetData(), response.GetStringRef().c_str()); |
| 2967 | } else { |
| 2968 | error.SetErrorStringWithFormat("failed to send packet: '%s'", |
| 2969 | packet.GetData()); |
| 2970 | } |
| 2971 | return 0; |
| 2972 | } |
| 2973 | |
| 2974 | lldb::addr_t ProcessGDBRemote::DoAllocateMemory(size_t size, |
| 2975 | uint32_t permissions, |
| 2976 | Status &error) { |
| 2977 | Log *log( |
| 2978 | GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS(1u << 1) | LIBLLDB_LOG_EXPRESSIONS(1u << 8))); |
| 2979 | addr_t allocated_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 2980 | |
| 2981 | if (m_gdb_comm.SupportsAllocDeallocMemory() != eLazyBoolNo) { |
| 2982 | allocated_addr = m_gdb_comm.AllocateMemory(size, permissions); |
| 2983 | if (allocated_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) || |
| 2984 | m_gdb_comm.SupportsAllocDeallocMemory() == eLazyBoolYes) |
| 2985 | return allocated_addr; |
| 2986 | } |
| 2987 | |
| 2988 | if (m_gdb_comm.SupportsAllocDeallocMemory() == eLazyBoolNo) { |
| 2989 | // Call mmap() to create memory in the inferior.. |
| 2990 | unsigned prot = 0; |
| 2991 | if (permissions & lldb::ePermissionsReadable) |
| 2992 | prot |= eMmapProtRead; |
| 2993 | if (permissions & lldb::ePermissionsWritable) |
| 2994 | prot |= eMmapProtWrite; |
| 2995 | if (permissions & lldb::ePermissionsExecutable) |
| 2996 | prot |= eMmapProtExec; |
| 2997 | |
| 2998 | if (InferiorCallMmap(this, allocated_addr, 0, size, prot, |
| 2999 | eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) |
| 3000 | m_addr_to_mmap_size[allocated_addr] = size; |
| 3001 | else { |
| 3002 | allocated_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 3003 | if (log) |
| 3004 | log->Printf("ProcessGDBRemote::%s no direct stub support for memory " |
| 3005 | "allocation, and InferiorCallMmap also failed - is stub " |
| 3006 | "missing register context save/restore capability?", |
| 3007 | __FUNCTION__); |
| 3008 | } |
| 3009 | } |
| 3010 | |
| 3011 | if (allocated_addr == LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
| 3012 | error.SetErrorStringWithFormat( |
| 3013 | "unable to allocate %" PRIu64"l" "u" " bytes of memory with permissions %s", |
| 3014 | (uint64_t)size, GetPermissionsAsCString(permissions)); |
| 3015 | else |
| 3016 | error.Clear(); |
| 3017 | return allocated_addr; |
| 3018 | } |
| 3019 | |
| 3020 | Status ProcessGDBRemote::GetMemoryRegionInfo(addr_t load_addr, |
| 3021 | MemoryRegionInfo ®ion_info) { |
| 3022 | |
| 3023 | Status error(m_gdb_comm.GetMemoryRegionInfo(load_addr, region_info)); |
| 3024 | return error; |
| 3025 | } |
| 3026 | |
| 3027 | Status ProcessGDBRemote::GetWatchpointSupportInfo(uint32_t &num) { |
| 3028 | |
| 3029 | Status error(m_gdb_comm.GetWatchpointSupportInfo(num)); |
| 3030 | return error; |
| 3031 | } |
| 3032 | |
| 3033 | Status ProcessGDBRemote::GetWatchpointSupportInfo(uint32_t &num, bool &after) { |
| 3034 | Status error(m_gdb_comm.GetWatchpointSupportInfo( |
| 3035 | num, after, GetTarget().GetArchitecture())); |
| 3036 | return error; |
| 3037 | } |
| 3038 | |
| 3039 | Status ProcessGDBRemote::DoDeallocateMemory(lldb::addr_t addr) { |
| 3040 | Status error; |
| 3041 | LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); |
| 3042 | |
| 3043 | switch (supported) { |
| 3044 | case eLazyBoolCalculate: |
| 3045 | // We should never be deallocating memory without allocating memory first |
| 3046 | // so we should never get eLazyBoolCalculate |
| 3047 | error.SetErrorString( |
| 3048 | "tried to deallocate memory without ever allocating memory"); |
| 3049 | break; |
| 3050 | |
| 3051 | case eLazyBoolYes: |
| 3052 | if (!m_gdb_comm.DeallocateMemory(addr)) |
| 3053 | error.SetErrorStringWithFormat( |
| 3054 | "unable to deallocate memory at 0x%" PRIx64"l" "x", addr); |
| 3055 | break; |
| 3056 | |
| 3057 | case eLazyBoolNo: |
| 3058 | // Call munmap() to deallocate memory in the inferior.. |
| 3059 | { |
| 3060 | MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); |
| 3061 | if (pos != m_addr_to_mmap_size.end() && |
| 3062 | InferiorCallMunmap(this, addr, pos->second)) |
| 3063 | m_addr_to_mmap_size.erase(pos); |
| 3064 | else |
| 3065 | error.SetErrorStringWithFormat( |
| 3066 | "unable to deallocate memory at 0x%" PRIx64"l" "x", addr); |
| 3067 | } |
| 3068 | break; |
| 3069 | } |
| 3070 | |
| 3071 | return error; |
| 3072 | } |
| 3073 | |
| 3074 | //------------------------------------------------------------------ |
| 3075 | // Process STDIO |
| 3076 | //------------------------------------------------------------------ |
| 3077 | size_t ProcessGDBRemote::PutSTDIN(const char *src, size_t src_len, |
| 3078 | Status &error) { |
| 3079 | if (m_stdio_communication.IsConnected()) { |
| 3080 | ConnectionStatus status; |
| 3081 | m_stdio_communication.Write(src, src_len, status, NULL__null); |
| 3082 | } else if (m_stdin_forward) { |
| 3083 | m_gdb_comm.SendStdinNotification(src, src_len); |
| 3084 | } |
| 3085 | return 0; |
| 3086 | } |
| 3087 | |
| 3088 | Status ProcessGDBRemote::EnableBreakpointSite(BreakpointSite *bp_site) { |
| 3089 | Status error; |
| 3090 | assert(bp_site != NULL)((bp_site != __null) ? static_cast<void> (0) : __assert_fail ("bp_site != NULL", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 3090, __PRETTY_FUNCTION__)); |
| 3091 | |
| 3092 | // Get logging info |
| 3093 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS(1u << 7))); |
| 3094 | user_id_t site_id = bp_site->GetID(); |
| 3095 | |
| 3096 | // Get the breakpoint address |
| 3097 | const addr_t addr = bp_site->GetLoadAddress(); |
| 3098 | |
| 3099 | // Log that a breakpoint was requested |
| 3100 | if (log) |
| 3101 | log->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64"l" "u" |
| 3102 | ") address = 0x%" PRIx64"l" "x", |
| 3103 | site_id, (uint64_t)addr); |
| 3104 | |
| 3105 | // Breakpoint already exists and is enabled |
| 3106 | if (bp_site->IsEnabled()) { |
| 3107 | if (log) |
| 3108 | log->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64"l" "u" |
| 3109 | ") address = 0x%" PRIx64"l" "x" " -- SUCCESS (already enabled)", |
| 3110 | site_id, (uint64_t)addr); |
| 3111 | return error; |
| 3112 | } |
| 3113 | |
| 3114 | // Get the software breakpoint trap opcode size |
| 3115 | const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode(bp_site); |
| 3116 | |
| 3117 | // SupportsGDBStoppointPacket() simply checks a boolean, indicating if this |
| 3118 | // breakpoint type is supported by the remote stub. These are set to true by |
| 3119 | // default, and later set to false only after we receive an unimplemented |
| 3120 | // response when sending a breakpoint packet. This means initially that |
| 3121 | // unless we were specifically instructed to use a hardware breakpoint, LLDB |
| 3122 | // will attempt to set a software breakpoint. HardwareRequired() also queries |
| 3123 | // a boolean variable which indicates if the user specifically asked for |
| 3124 | // hardware breakpoints. If true then we will skip over software |
| 3125 | // breakpoints. |
| 3126 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware) && |
| 3127 | (!bp_site->HardwareRequired())) { |
| 3128 | // Try to send off a software breakpoint packet ($Z0) |
| 3129 | uint8_t error_no = m_gdb_comm.SendGDBStoppointTypePacket( |
| 3130 | eBreakpointSoftware, true, addr, bp_op_size); |
| 3131 | if (error_no == 0) { |
| 3132 | // The breakpoint was placed successfully |
| 3133 | bp_site->SetEnabled(true); |
| 3134 | bp_site->SetType(BreakpointSite::eExternal); |
| 3135 | return error; |
| 3136 | } |
| 3137 | |
| 3138 | // SendGDBStoppointTypePacket() will return an error if it was unable to |
| 3139 | // set this breakpoint. We need to differentiate between a error specific |
| 3140 | // to placing this breakpoint or if we have learned that this breakpoint |
| 3141 | // type is unsupported. To do this, we must test the support boolean for |
| 3142 | // this breakpoint type to see if it now indicates that this breakpoint |
| 3143 | // type is unsupported. If they are still supported then we should return |
| 3144 | // with the error code. If they are now unsupported, then we would like to |
| 3145 | // fall through and try another form of breakpoint. |
| 3146 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware)) { |
| 3147 | if (error_no != UINT8_MAX(255)) |
| 3148 | error.SetErrorStringWithFormat( |
| 3149 | "error: %d sending the breakpoint request", errno(*__errno_location ())); |
| 3150 | else |
| 3151 | error.SetErrorString("error sending the breakpoint request"); |
| 3152 | return error; |
| 3153 | } |
| 3154 | |
| 3155 | // We reach here when software breakpoints have been found to be |
| 3156 | // unsupported. For future calls to set a breakpoint, we will not attempt |
| 3157 | // to set a breakpoint with a type that is known not to be supported. |
| 3158 | if (log) |
| 3159 | log->Printf("Software breakpoints are unsupported"); |
| 3160 | |
| 3161 | // So we will fall through and try a hardware breakpoint |
| 3162 | } |
| 3163 | |
| 3164 | // The process of setting a hardware breakpoint is much the same as above. |
| 3165 | // We check the supported boolean for this breakpoint type, and if it is |
| 3166 | // thought to be supported then we will try to set this breakpoint with a |
| 3167 | // hardware breakpoint. |
| 3168 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware)) { |
| 3169 | // Try to send off a hardware breakpoint packet ($Z1) |
| 3170 | uint8_t error_no = m_gdb_comm.SendGDBStoppointTypePacket( |
| 3171 | eBreakpointHardware, true, addr, bp_op_size); |
| 3172 | if (error_no == 0) { |
| 3173 | // The breakpoint was placed successfully |
| 3174 | bp_site->SetEnabled(true); |
| 3175 | bp_site->SetType(BreakpointSite::eHardware); |
| 3176 | return error; |
| 3177 | } |
| 3178 | |
| 3179 | // Check if the error was something other then an unsupported breakpoint |
| 3180 | // type |
| 3181 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware)) { |
| 3182 | // Unable to set this hardware breakpoint |
| 3183 | if (error_no != UINT8_MAX(255)) |
| 3184 | error.SetErrorStringWithFormat( |
| 3185 | "error: %d sending the hardware breakpoint request " |
| 3186 | "(hardware breakpoint resources might be exhausted or unavailable)", |
| 3187 | error_no); |
| 3188 | else |
| 3189 | error.SetErrorString("error sending the hardware breakpoint request " |
| 3190 | "(hardware breakpoint resources " |
| 3191 | "might be exhausted or unavailable)"); |
| 3192 | return error; |
| 3193 | } |
| 3194 | |
| 3195 | // We will reach here when the stub gives an unsupported response to a |
| 3196 | // hardware breakpoint |
| 3197 | if (log) |
| 3198 | log->Printf("Hardware breakpoints are unsupported"); |
| 3199 | |
| 3200 | // Finally we will falling through to a #trap style breakpoint |
| 3201 | } |
| 3202 | |
| 3203 | // Don't fall through when hardware breakpoints were specifically requested |
| 3204 | if (bp_site->HardwareRequired()) { |
| 3205 | error.SetErrorString("hardware breakpoints are not supported"); |
| 3206 | return error; |
| 3207 | } |
| 3208 | |
| 3209 | // As a last resort we want to place a manual breakpoint. An instruction is |
| 3210 | // placed into the process memory using memory write packets. |
| 3211 | return EnableSoftwareBreakpoint(bp_site); |
| 3212 | } |
| 3213 | |
| 3214 | Status ProcessGDBRemote::DisableBreakpointSite(BreakpointSite *bp_site) { |
| 3215 | Status error; |
| 3216 | assert(bp_site != NULL)((bp_site != __null) ? static_cast<void> (0) : __assert_fail ("bp_site != NULL", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 3216, __PRETTY_FUNCTION__)); |
| 3217 | addr_t addr = bp_site->GetLoadAddress(); |
| 3218 | user_id_t site_id = bp_site->GetID(); |
| 3219 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS(1u << 7))); |
| 3220 | if (log) |
| 3221 | log->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64"l" "u" |
| 3222 | ") addr = 0x%8.8" PRIx64"l" "x", |
| 3223 | site_id, (uint64_t)addr); |
| 3224 | |
| 3225 | if (bp_site->IsEnabled()) { |
| 3226 | const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode(bp_site); |
| 3227 | |
| 3228 | BreakpointSite::Type bp_type = bp_site->GetType(); |
| 3229 | switch (bp_type) { |
| 3230 | case BreakpointSite::eSoftware: |
| 3231 | error = DisableSoftwareBreakpoint(bp_site); |
| 3232 | break; |
| 3233 | |
| 3234 | case BreakpointSite::eHardware: |
| 3235 | if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, false, |
| 3236 | addr, bp_op_size)) |
| 3237 | error.SetErrorToGenericError(); |
| 3238 | break; |
| 3239 | |
| 3240 | case BreakpointSite::eExternal: { |
| 3241 | GDBStoppointType stoppoint_type; |
| 3242 | if (bp_site->IsHardware()) |
| 3243 | stoppoint_type = eBreakpointHardware; |
| 3244 | else |
| 3245 | stoppoint_type = eBreakpointSoftware; |
| 3246 | |
| 3247 | if (m_gdb_comm.SendGDBStoppointTypePacket(stoppoint_type, false, addr, |
| 3248 | bp_op_size)) |
| 3249 | error.SetErrorToGenericError(); |
| 3250 | } break; |
| 3251 | } |
| 3252 | if (error.Success()) |
| 3253 | bp_site->SetEnabled(false); |
| 3254 | } else { |
| 3255 | if (log) |
| 3256 | log->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64"l" "u" |
| 3257 | ") addr = 0x%8.8" PRIx64"l" "x" " -- SUCCESS (already disabled)", |
| 3258 | site_id, (uint64_t)addr); |
| 3259 | return error; |
| 3260 | } |
| 3261 | |
| 3262 | if (error.Success()) |
| 3263 | error.SetErrorToGenericError(); |
| 3264 | return error; |
| 3265 | } |
| 3266 | |
| 3267 | // Pre-requisite: wp != NULL. |
| 3268 | static GDBStoppointType GetGDBStoppointType(Watchpoint *wp) { |
| 3269 | assert(wp)((wp) ? static_cast<void> (0) : __assert_fail ("wp", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 3269, __PRETTY_FUNCTION__)); |
| 3270 | bool watch_read = wp->WatchpointRead(); |
| 3271 | bool watch_write = wp->WatchpointWrite(); |
| 3272 | |
| 3273 | // watch_read and watch_write cannot both be false. |
| 3274 | assert(watch_read || watch_write)((watch_read || watch_write) ? static_cast<void> (0) : __assert_fail ("watch_read || watch_write", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 3274, __PRETTY_FUNCTION__)); |
| 3275 | if (watch_read && watch_write) |
| 3276 | return eWatchpointReadWrite; |
| 3277 | else if (watch_read) |
| 3278 | return eWatchpointRead; |
| 3279 | else // Must be watch_write, then. |
| 3280 | return eWatchpointWrite; |
| 3281 | } |
| 3282 | |
| 3283 | Status ProcessGDBRemote::EnableWatchpoint(Watchpoint *wp, bool notify) { |
| 3284 | Status error; |
| 3285 | if (wp) { |
| 3286 | user_id_t watchID = wp->GetID(); |
| 3287 | addr_t addr = wp->GetLoadAddress(); |
| 3288 | Log *log( |
| 3289 | ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS(1u << 8))); |
| 3290 | if (log) |
| 3291 | log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64"l" "u" ")", |
| 3292 | watchID); |
| 3293 | if (wp->IsEnabled()) { |
| 3294 | if (log) |
| 3295 | log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64"l" "u" |
| 3296 | ") addr = 0x%8.8" PRIx64"l" "x" ": watchpoint already enabled.", |
| 3297 | watchID, (uint64_t)addr); |
| 3298 | return error; |
| 3299 | } |
| 3300 | |
| 3301 | GDBStoppointType type = GetGDBStoppointType(wp); |
| 3302 | // Pass down an appropriate z/Z packet... |
| 3303 | if (m_gdb_comm.SupportsGDBStoppointPacket(type)) { |
| 3304 | if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, |
| 3305 | wp->GetByteSize()) == 0) { |
| 3306 | wp->SetEnabled(true, notify); |
| 3307 | return error; |
| 3308 | } else |
| 3309 | error.SetErrorString("sending gdb watchpoint packet failed"); |
| 3310 | } else |
| 3311 | error.SetErrorString("watchpoints not supported"); |
| 3312 | } else { |
| 3313 | error.SetErrorString("Watchpoint argument was NULL."); |
| 3314 | } |
| 3315 | if (error.Success()) |
| 3316 | error.SetErrorToGenericError(); |
| 3317 | return error; |
| 3318 | } |
| 3319 | |
| 3320 | Status ProcessGDBRemote::DisableWatchpoint(Watchpoint *wp, bool notify) { |
| 3321 | Status error; |
| 3322 | if (wp) { |
| 3323 | user_id_t watchID = wp->GetID(); |
| 3324 | |
| 3325 | Log *log( |
| 3326 | ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS(1u << 8))); |
| 3327 | |
| 3328 | addr_t addr = wp->GetLoadAddress(); |
| 3329 | |
| 3330 | if (log) |
| 3331 | log->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64"l" "u" |
| 3332 | ") addr = 0x%8.8" PRIx64"l" "x", |
| 3333 | watchID, (uint64_t)addr); |
| 3334 | |
| 3335 | if (!wp->IsEnabled()) { |
| 3336 | if (log) |
| 3337 | log->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64"l" "u" |
| 3338 | ") addr = 0x%8.8" PRIx64"l" "x" " -- SUCCESS (already disabled)", |
| 3339 | watchID, (uint64_t)addr); |
| 3340 | // See also 'class WatchpointSentry' within StopInfo.cpp. This disabling |
| 3341 | // attempt might come from the user-supplied actions, we'll route it in |
| 3342 | // order for the watchpoint object to intelligently process this action. |
| 3343 | wp->SetEnabled(false, notify); |
| 3344 | return error; |
| 3345 | } |
| 3346 | |
| 3347 | if (wp->IsHardware()) { |
| 3348 | GDBStoppointType type = GetGDBStoppointType(wp); |
| 3349 | // Pass down an appropriate z/Z packet... |
| 3350 | if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, |
| 3351 | wp->GetByteSize()) == 0) { |
| 3352 | wp->SetEnabled(false, notify); |
| 3353 | return error; |
| 3354 | } else |
| 3355 | error.SetErrorString("sending gdb watchpoint packet failed"); |
| 3356 | } |
| 3357 | // TODO: clear software watchpoints if we implement them |
| 3358 | } else { |
| 3359 | error.SetErrorString("Watchpoint argument was NULL."); |
| 3360 | } |
| 3361 | if (error.Success()) |
| 3362 | error.SetErrorToGenericError(); |
| 3363 | return error; |
| 3364 | } |
| 3365 | |
| 3366 | void ProcessGDBRemote::Clear() { |
| 3367 | m_thread_list_real.Clear(); |
| 3368 | m_thread_list.Clear(); |
| 3369 | } |
| 3370 | |
| 3371 | Status ProcessGDBRemote::DoSignal(int signo) { |
| 3372 | Status error; |
| 3373 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 3374 | if (log) |
| 3375 | log->Printf("ProcessGDBRemote::DoSignal (signal = %d)", signo); |
| 3376 | |
| 3377 | if (!m_gdb_comm.SendAsyncSignal(signo)) |
| 3378 | error.SetErrorStringWithFormat("failed to send signal %i", signo); |
| 3379 | return error; |
| 3380 | } |
| 3381 | |
| 3382 | Status |
| 3383 | ProcessGDBRemote::EstablishConnectionIfNeeded(const ProcessInfo &process_info) { |
| 3384 | // Make sure we aren't already connected? |
| 3385 | if (m_gdb_comm.IsConnected()) |
| 3386 | return Status(); |
| 3387 | |
| 3388 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
| 3389 | if (platform_sp && !platform_sp->IsHost()) |
| 3390 | return Status("Lost debug server connection"); |
| 3391 | |
| 3392 | auto error = LaunchAndConnectToDebugserver(process_info); |
| 3393 | if (error.Fail()) { |
| 3394 | const char *error_string = error.AsCString(); |
| 3395 | if (error_string == nullptr) |
| 3396 | error_string = "unable to launch " DEBUGSERVER_BASENAME"debugserver"; |
Value stored to 'error_string' is never read | |
| 3397 | } |
| 3398 | return error; |
| 3399 | } |
| 3400 | #if !defined(_WIN32) |
| 3401 | #define USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 1 |
| 3402 | #endif |
| 3403 | |
| 3404 | #ifdef USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 |
| 3405 | static bool SetCloexecFlag(int fd) { |
| 3406 | #if defined(FD_CLOEXEC1) |
| 3407 | int flags = ::fcntl(fd, F_GETFD1); |
| 3408 | if (flags == -1) |
| 3409 | return false; |
| 3410 | return (::fcntl(fd, F_SETFD2, flags | FD_CLOEXEC1) == 0); |
| 3411 | #else |
| 3412 | return false; |
| 3413 | #endif |
| 3414 | } |
| 3415 | #endif |
| 3416 | |
| 3417 | Status ProcessGDBRemote::LaunchAndConnectToDebugserver( |
| 3418 | const ProcessInfo &process_info) { |
| 3419 | using namespace std::placeholders; // For _1, _2, etc. |
| 3420 | |
| 3421 | Status error; |
| 3422 | if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID0) { |
| 3423 | // If we locate debugserver, keep that located version around |
| 3424 | static FileSpec g_debugserver_file_spec; |
| 3425 | |
| 3426 | ProcessLaunchInfo debugserver_launch_info; |
| 3427 | // Make debugserver run in its own session so signals generated by special |
| 3428 | // terminal key sequences (^C) don't affect debugserver. |
| 3429 | debugserver_launch_info.SetLaunchInSeparateProcessGroup(true); |
| 3430 | |
| 3431 | const std::weak_ptr<ProcessGDBRemote> this_wp = |
| 3432 | std::static_pointer_cast<ProcessGDBRemote>(shared_from_this()); |
| 3433 | debugserver_launch_info.SetMonitorProcessCallback( |
| 3434 | std::bind(MonitorDebugserverProcess, this_wp, _1, _2, _3, _4), false); |
| 3435 | debugserver_launch_info.SetUserID(process_info.GetUserID()); |
| 3436 | |
| 3437 | int communication_fd = -1; |
| 3438 | #ifdef USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 |
| 3439 | // Use a socketpair on non-Windows systems for security and performance |
| 3440 | // reasons. |
| 3441 | int sockets[2]; /* the pair of socket descriptors */ |
| 3442 | if (socketpair(AF_UNIX1, SOCK_STREAMSOCK_STREAM, 0, sockets) == -1) { |
| 3443 | error.SetErrorToErrno(); |
| 3444 | return error; |
| 3445 | } |
| 3446 | |
| 3447 | int our_socket = sockets[0]; |
| 3448 | int gdb_socket = sockets[1]; |
| 3449 | CleanUp cleanup_our(close, our_socket); |
| 3450 | CleanUp cleanup_gdb(close, gdb_socket); |
| 3451 | |
| 3452 | // Don't let any child processes inherit our communication socket |
| 3453 | SetCloexecFlag(our_socket); |
| 3454 | communication_fd = gdb_socket; |
| 3455 | #endif |
| 3456 | |
| 3457 | error = m_gdb_comm.StartDebugserverProcess( |
| 3458 | nullptr, GetTarget().GetPlatform().get(), debugserver_launch_info, |
| 3459 | nullptr, nullptr, communication_fd); |
| 3460 | |
| 3461 | if (error.Success()) |
| 3462 | m_debugserver_pid = debugserver_launch_info.GetProcessID(); |
| 3463 | else |
| 3464 | m_debugserver_pid = LLDB_INVALID_PROCESS_ID0; |
| 3465 | |
| 3466 | if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID0) { |
| 3467 | #ifdef USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 |
| 3468 | // Our process spawned correctly, we can now set our connection to use |
| 3469 | // our end of the socket pair |
| 3470 | cleanup_our.disable(); |
| 3471 | m_gdb_comm.SetConnection(new ConnectionFileDescriptor(our_socket, true)); |
| 3472 | #endif |
| 3473 | StartAsyncThread(); |
| 3474 | } |
| 3475 | |
| 3476 | if (error.Fail()) { |
| 3477 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 3478 | |
| 3479 | if (log) |
| 3480 | log->Printf("failed to start debugserver process: %s", |
| 3481 | error.AsCString()); |
| 3482 | return error; |
| 3483 | } |
| 3484 | |
| 3485 | if (m_gdb_comm.IsConnected()) { |
| 3486 | // Finish the connection process by doing the handshake without |
| 3487 | // connecting (send NULL URL) |
| 3488 | error = ConnectToDebugserver(""); |
| 3489 | } else { |
| 3490 | error.SetErrorString("connection failed"); |
| 3491 | } |
| 3492 | } |
| 3493 | return error; |
| 3494 | } |
| 3495 | |
| 3496 | bool ProcessGDBRemote::MonitorDebugserverProcess( |
| 3497 | std::weak_ptr<ProcessGDBRemote> process_wp, lldb::pid_t debugserver_pid, |
| 3498 | bool exited, // True if the process did exit |
| 3499 | int signo, // Zero for no signal |
| 3500 | int exit_status // Exit value of process if signal is zero |
| 3501 | ) { |
| 3502 | // "debugserver_pid" argument passed in is the process ID for debugserver |
| 3503 | // that we are tracking... |
| 3504 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 3505 | const bool handled = true; |
| 3506 | |
| 3507 | if (log) |
| 3508 | log->Printf("ProcessGDBRemote::%s(process_wp, pid=%" PRIu64"l" "u" |
| 3509 | ", signo=%i (0x%x), exit_status=%i)", |
| 3510 | __FUNCTION__, debugserver_pid, signo, signo, exit_status); |
| 3511 | |
| 3512 | std::shared_ptr<ProcessGDBRemote> process_sp = process_wp.lock(); |
| 3513 | if (log) |
| 3514 | log->Printf("ProcessGDBRemote::%s(process = %p)", __FUNCTION__, |
| 3515 | static_cast<void *>(process_sp.get())); |
| 3516 | if (!process_sp || process_sp->m_debugserver_pid != debugserver_pid) |
| 3517 | return handled; |
| 3518 | |
| 3519 | // Sleep for a half a second to make sure our inferior process has time to |
| 3520 | // set its exit status before we set it incorrectly when both the debugserver |
| 3521 | // and the inferior process shut down. |
| 3522 | usleep(500000); |
| 3523 | // If our process hasn't yet exited, debugserver might have died. If the |
| 3524 | // process did exit, then we are reaping it. |
| 3525 | const StateType state = process_sp->GetState(); |
| 3526 | |
| 3527 | if (state != eStateInvalid && state != eStateUnloaded && |
| 3528 | state != eStateExited && state != eStateDetached) { |
| 3529 | char error_str[1024]; |
| 3530 | if (signo) { |
| 3531 | const char *signal_cstr = |
| 3532 | process_sp->GetUnixSignals()->GetSignalAsCString(signo); |
| 3533 | if (signal_cstr) |
| 3534 | ::snprintf(error_str, sizeof(error_str), |
| 3535 | DEBUGSERVER_BASENAME"debugserver" " died with signal %s", signal_cstr); |
| 3536 | else |
| 3537 | ::snprintf(error_str, sizeof(error_str), |
| 3538 | DEBUGSERVER_BASENAME"debugserver" " died with signal %i", signo); |
| 3539 | } else { |
| 3540 | ::snprintf(error_str, sizeof(error_str), |
| 3541 | DEBUGSERVER_BASENAME"debugserver" " died with an exit status of 0x%8.8x", |
| 3542 | exit_status); |
| 3543 | } |
| 3544 | |
| 3545 | process_sp->SetExitStatus(-1, error_str); |
| 3546 | } |
| 3547 | // Debugserver has exited we need to let our ProcessGDBRemote know that it no |
| 3548 | // longer has a debugserver instance |
| 3549 | process_sp->m_debugserver_pid = LLDB_INVALID_PROCESS_ID0; |
| 3550 | return handled; |
| 3551 | } |
| 3552 | |
| 3553 | void ProcessGDBRemote::KillDebugserverProcess() { |
| 3554 | m_gdb_comm.Disconnect(); |
| 3555 | if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID0) { |
| 3556 | Host::Kill(m_debugserver_pid, SIGINT2); |
| 3557 | m_debugserver_pid = LLDB_INVALID_PROCESS_ID0; |
| 3558 | } |
| 3559 | } |
| 3560 | |
| 3561 | void ProcessGDBRemote::Initialize() { |
| 3562 | static llvm::once_flag g_once_flag; |
| 3563 | |
| 3564 | llvm::call_once(g_once_flag, []() { |
| 3565 | PluginManager::RegisterPlugin(GetPluginNameStatic(), |
| 3566 | GetPluginDescriptionStatic(), CreateInstance, |
| 3567 | DebuggerInitialize); |
| 3568 | }); |
| 3569 | } |
| 3570 | |
| 3571 | void ProcessGDBRemote::DebuggerInitialize(Debugger &debugger) { |
| 3572 | if (!PluginManager::GetSettingForProcessPlugin( |
| 3573 | debugger, PluginProperties::GetSettingName())) { |
| 3574 | const bool is_global_setting = true; |
| 3575 | PluginManager::CreateSettingForProcessPlugin( |
| 3576 | debugger, GetGlobalPluginProperties()->GetValueProperties(), |
| 3577 | ConstString("Properties for the gdb-remote process plug-in."), |
| 3578 | is_global_setting); |
| 3579 | } |
| 3580 | } |
| 3581 | |
| 3582 | bool ProcessGDBRemote::StartAsyncThread() { |
| 3583 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 3584 | |
| 3585 | if (log) |
| 3586 | log->Printf("ProcessGDBRemote::%s ()", __FUNCTION__); |
| 3587 | |
| 3588 | std::lock_guard<std::recursive_mutex> guard(m_async_thread_state_mutex); |
| 3589 | if (!m_async_thread.IsJoinable()) { |
| 3590 | // Create a thread that watches our internal state and controls which |
| 3591 | // events make it to clients (into the DCProcess event queue). |
| 3592 | |
| 3593 | m_async_thread = |
| 3594 | ThreadLauncher::LaunchThread("<lldb.process.gdb-remote.async>", |
| 3595 | ProcessGDBRemote::AsyncThread, this, NULL__null); |
| 3596 | } else if (log) |
| 3597 | log->Printf("ProcessGDBRemote::%s () - Called when Async thread was " |
| 3598 | "already running.", |
| 3599 | __FUNCTION__); |
| 3600 | |
| 3601 | return m_async_thread.IsJoinable(); |
| 3602 | } |
| 3603 | |
| 3604 | void ProcessGDBRemote::StopAsyncThread() { |
| 3605 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 3606 | |
| 3607 | if (log) |
| 3608 | log->Printf("ProcessGDBRemote::%s ()", __FUNCTION__); |
| 3609 | |
| 3610 | std::lock_guard<std::recursive_mutex> guard(m_async_thread_state_mutex); |
| 3611 | if (m_async_thread.IsJoinable()) { |
| 3612 | m_async_broadcaster.BroadcastEvent(eBroadcastBitAsyncThreadShouldExit); |
| 3613 | |
| 3614 | // This will shut down the async thread. |
| 3615 | m_gdb_comm.Disconnect(); // Disconnect from the debug server. |
| 3616 | |
| 3617 | // Stop the stdio thread |
| 3618 | m_async_thread.Join(nullptr); |
| 3619 | m_async_thread.Reset(); |
| 3620 | } else if (log) |
| 3621 | log->Printf( |
| 3622 | "ProcessGDBRemote::%s () - Called when Async thread was not running.", |
| 3623 | __FUNCTION__); |
| 3624 | } |
| 3625 | |
| 3626 | bool ProcessGDBRemote::HandleNotifyPacket(StringExtractorGDBRemote &packet) { |
| 3627 | // get the packet at a string |
| 3628 | const std::string &pkt = packet.GetStringRef(); |
| 3629 | // skip %stop: |
| 3630 | StringExtractorGDBRemote stop_info(pkt.c_str() + 5); |
| 3631 | |
| 3632 | // pass as a thread stop info packet |
| 3633 | SetLastStopPacket(stop_info); |
| 3634 | |
| 3635 | // check for more stop reasons |
| 3636 | HandleStopReplySequence(); |
| 3637 | |
| 3638 | // if the process is stopped then we need to fake a resume so that we can |
| 3639 | // stop properly with the new break. This is possible due to |
| 3640 | // SetPrivateState() broadcasting the state change as a side effect. |
| 3641 | if (GetPrivateState() == lldb::StateType::eStateStopped) { |
| 3642 | SetPrivateState(lldb::StateType::eStateRunning); |
| 3643 | } |
| 3644 | |
| 3645 | // since we have some stopped packets we can halt the process |
| 3646 | SetPrivateState(lldb::StateType::eStateStopped); |
| 3647 | |
| 3648 | return true; |
| 3649 | } |
| 3650 | |
| 3651 | thread_result_t ProcessGDBRemote::AsyncThread(void *arg) { |
| 3652 | ProcessGDBRemote *process = (ProcessGDBRemote *)arg; |
| 3653 | |
| 3654 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 3655 | if (log) |
| 3656 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3657 | ") thread starting...", |
| 3658 | __FUNCTION__, arg, process->GetID()); |
| 3659 | |
| 3660 | EventSP event_sp; |
| 3661 | bool done = false; |
| 3662 | while (!done) { |
| 3663 | if (log) |
| 3664 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3665 | ") listener.WaitForEvent (NULL, event_sp)...", |
| 3666 | __FUNCTION__, arg, process->GetID()); |
| 3667 | if (process->m_async_listener_sp->GetEvent(event_sp, llvm::None)) { |
| 3668 | const uint32_t event_type = event_sp->GetType(); |
| 3669 | if (event_sp->BroadcasterIs(&process->m_async_broadcaster)) { |
| 3670 | if (log) |
| 3671 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3672 | ") Got an event of type: %d...", |
| 3673 | __FUNCTION__, arg, process->GetID(), event_type); |
| 3674 | |
| 3675 | switch (event_type) { |
| 3676 | case eBroadcastBitAsyncContinue: { |
| 3677 | const EventDataBytes *continue_packet = |
| 3678 | EventDataBytes::GetEventDataFromEvent(event_sp.get()); |
| 3679 | |
| 3680 | if (continue_packet) { |
| 3681 | const char *continue_cstr = |
| 3682 | (const char *)continue_packet->GetBytes(); |
| 3683 | const size_t continue_cstr_len = continue_packet->GetByteSize(); |
| 3684 | if (log) |
| 3685 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3686 | ") got eBroadcastBitAsyncContinue: %s", |
| 3687 | __FUNCTION__, arg, process->GetID(), continue_cstr); |
| 3688 | |
| 3689 | if (::strstr(continue_cstr, "vAttach") == NULL__null) |
| 3690 | process->SetPrivateState(eStateRunning); |
| 3691 | StringExtractorGDBRemote response; |
| 3692 | |
| 3693 | // If in Non-Stop-Mode |
| 3694 | if (process->GetTarget().GetNonStopModeEnabled()) { |
| 3695 | // send the vCont packet |
| 3696 | if (!process->GetGDBRemote().SendvContPacket( |
| 3697 | llvm::StringRef(continue_cstr, continue_cstr_len), |
| 3698 | response)) { |
| 3699 | // Something went wrong |
| 3700 | done = true; |
| 3701 | break; |
| 3702 | } |
| 3703 | } |
| 3704 | // If in All-Stop-Mode |
| 3705 | else { |
| 3706 | StateType stop_state = |
| 3707 | process->GetGDBRemote().SendContinuePacketAndWaitForResponse( |
| 3708 | *process, *process->GetUnixSignals(), |
| 3709 | llvm::StringRef(continue_cstr, continue_cstr_len), |
| 3710 | response); |
| 3711 | |
| 3712 | // We need to immediately clear the thread ID list so we are sure |
| 3713 | // to get a valid list of threads. The thread ID list might be |
| 3714 | // contained within the "response", or the stop reply packet that |
| 3715 | // caused the stop. So clear it now before we give the stop reply |
| 3716 | // packet to the process using the |
| 3717 | // process->SetLastStopPacket()... |
| 3718 | process->ClearThreadIDList(); |
| 3719 | |
| 3720 | switch (stop_state) { |
| 3721 | case eStateStopped: |
| 3722 | case eStateCrashed: |
| 3723 | case eStateSuspended: |
| 3724 | process->SetLastStopPacket(response); |
| 3725 | process->SetPrivateState(stop_state); |
| 3726 | break; |
| 3727 | |
| 3728 | case eStateExited: { |
| 3729 | process->SetLastStopPacket(response); |
| 3730 | process->ClearThreadIDList(); |
| 3731 | response.SetFilePos(1); |
| 3732 | |
| 3733 | int exit_status = response.GetHexU8(); |
| 3734 | std::string desc_string; |
| 3735 | if (response.GetBytesLeft() > 0 && |
| 3736 | response.GetChar('-') == ';') { |
| 3737 | llvm::StringRef desc_str; |
| 3738 | llvm::StringRef desc_token; |
| 3739 | while (response.GetNameColonValue(desc_token, desc_str)) { |
| 3740 | if (desc_token != "description") |
| 3741 | continue; |
| 3742 | StringExtractor extractor(desc_str); |
| 3743 | extractor.GetHexByteString(desc_string); |
| 3744 | } |
| 3745 | } |
| 3746 | process->SetExitStatus(exit_status, desc_string.c_str()); |
| 3747 | done = true; |
| 3748 | break; |
| 3749 | } |
| 3750 | case eStateInvalid: { |
| 3751 | // Check to see if we were trying to attach and if we got back |
| 3752 | // the "E87" error code from debugserver -- this indicates that |
| 3753 | // the process is not debuggable. Return a slightly more |
| 3754 | // helpful error message about why the attach failed. |
| 3755 | if (::strstr(continue_cstr, "vAttach") != NULL__null && |
| 3756 | response.GetError() == 0x87) { |
| 3757 | process->SetExitStatus(-1, "cannot attach to process due to " |
| 3758 | "System Integrity Protection"); |
| 3759 | } else if (::strstr(continue_cstr, "vAttach") != NULL__null && |
| 3760 | response.GetStatus().Fail()) { |
| 3761 | process->SetExitStatus(-1, response.GetStatus().AsCString()); |
| 3762 | } else { |
| 3763 | process->SetExitStatus(-1, "lost connection"); |
| 3764 | } |
| 3765 | break; |
| 3766 | } |
| 3767 | |
| 3768 | default: |
| 3769 | process->SetPrivateState(stop_state); |
| 3770 | break; |
| 3771 | } // switch(stop_state) |
| 3772 | } // else // if in All-stop-mode |
| 3773 | } // if (continue_packet) |
| 3774 | } // case eBroadcastBitAysncContinue |
| 3775 | break; |
| 3776 | |
| 3777 | case eBroadcastBitAsyncThreadShouldExit: |
| 3778 | if (log) |
| 3779 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3780 | ") got eBroadcastBitAsyncThreadShouldExit...", |
| 3781 | __FUNCTION__, arg, process->GetID()); |
| 3782 | done = true; |
| 3783 | break; |
| 3784 | |
| 3785 | default: |
| 3786 | if (log) |
| 3787 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3788 | ") got unknown event 0x%8.8x", |
| 3789 | __FUNCTION__, arg, process->GetID(), event_type); |
| 3790 | done = true; |
| 3791 | break; |
| 3792 | } |
| 3793 | } else if (event_sp->BroadcasterIs(&process->m_gdb_comm)) { |
| 3794 | switch (event_type) { |
| 3795 | case Communication::eBroadcastBitReadThreadDidExit: |
| 3796 | process->SetExitStatus(-1, "lost connection"); |
| 3797 | done = true; |
| 3798 | break; |
| 3799 | |
| 3800 | case GDBRemoteCommunication::eBroadcastBitGdbReadThreadGotNotify: { |
| 3801 | lldb_private::Event *event = event_sp.get(); |
| 3802 | const EventDataBytes *continue_packet = |
| 3803 | EventDataBytes::GetEventDataFromEvent(event); |
| 3804 | StringExtractorGDBRemote notify( |
| 3805 | (const char *)continue_packet->GetBytes()); |
| 3806 | // Hand this over to the process to handle |
| 3807 | process->HandleNotifyPacket(notify); |
| 3808 | break; |
| 3809 | } |
| 3810 | |
| 3811 | default: |
| 3812 | if (log) |
| 3813 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3814 | ") got unknown event 0x%8.8x", |
| 3815 | __FUNCTION__, arg, process->GetID(), event_type); |
| 3816 | done = true; |
| 3817 | break; |
| 3818 | } |
| 3819 | } |
| 3820 | } else { |
| 3821 | if (log) |
| 3822 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3823 | ") listener.WaitForEvent (NULL, event_sp) => false", |
| 3824 | __FUNCTION__, arg, process->GetID()); |
| 3825 | done = true; |
| 3826 | } |
| 3827 | } |
| 3828 | |
| 3829 | if (log) |
| 3830 | log->Printf("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64"l" "u" |
| 3831 | ") thread exiting...", |
| 3832 | __FUNCTION__, arg, process->GetID()); |
| 3833 | |
| 3834 | return NULL__null; |
| 3835 | } |
| 3836 | |
| 3837 | // uint32_t |
| 3838 | // ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList |
| 3839 | // &matches, std::vector<lldb::pid_t> &pids) |
| 3840 | //{ |
| 3841 | // // If we are planning to launch the debugserver remotely, then we need to |
| 3842 | // fire up a debugserver |
| 3843 | // // process and ask it for the list of processes. But if we are local, we |
| 3844 | // can let the Host do it. |
| 3845 | // if (m_local_debugserver) |
| 3846 | // { |
| 3847 | // return Host::ListProcessesMatchingName (name, matches, pids); |
| 3848 | // } |
| 3849 | // else |
| 3850 | // { |
| 3851 | // // FIXME: Implement talking to the remote debugserver. |
| 3852 | // return 0; |
| 3853 | // } |
| 3854 | // |
| 3855 | //} |
| 3856 | // |
| 3857 | bool ProcessGDBRemote::NewThreadNotifyBreakpointHit( |
| 3858 | void *baton, StoppointCallbackContext *context, lldb::user_id_t break_id, |
| 3859 | lldb::user_id_t break_loc_id) { |
| 3860 | // I don't think I have to do anything here, just make sure I notice the new |
| 3861 | // thread when it starts to |
| 3862 | // run so I can stop it if that's what I want to do. |
| 3863 | Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP(1u << 7))); |
| 3864 | if (log) |
| 3865 | log->Printf("Hit New Thread Notification breakpoint."); |
| 3866 | return false; |
| 3867 | } |
| 3868 | |
| 3869 | Status ProcessGDBRemote::UpdateAutomaticSignalFiltering() { |
| 3870 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 3871 | LLDB_LOG(log, "Check if need to update ignored signals")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Check if need to update ignored signals"); } while (0); |
| 3872 | |
| 3873 | // QPassSignals package is not supported by the server, there is no way we |
| 3874 | // can ignore any signals on server side. |
| 3875 | if (!m_gdb_comm.GetQPassSignalsSupported()) |
| 3876 | return Status(); |
| 3877 | |
| 3878 | // No signals, nothing to send. |
| 3879 | if (m_unix_signals_sp == nullptr) |
| 3880 | return Status(); |
| 3881 | |
| 3882 | // Signals' version hasn't changed, no need to send anything. |
| 3883 | uint64_t new_signals_version = m_unix_signals_sp->GetVersion(); |
| 3884 | if (new_signals_version == m_last_signals_version) { |
| 3885 | LLDB_LOG(log, "Signals' version hasn't changed. version={0}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version hasn't changed. version={0}", m_last_signals_version ); } while (0) |
| 3886 | m_last_signals_version)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version hasn't changed. version={0}", m_last_signals_version ); } while (0); |
| 3887 | return Status(); |
| 3888 | } |
| 3889 | |
| 3890 | auto signals_to_ignore = |
| 3891 | m_unix_signals_sp->GetFilteredSignals(false, false, false); |
| 3892 | Status error = m_gdb_comm.SendSignalsToIgnore(signals_to_ignore); |
| 3893 | |
| 3894 | LLDB_LOG(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
| 3895 | "Signals' version changed. old version={0}, new version={1}, "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
| 3896 | "signals ignored={2}, update result={3}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
| 3897 | m_last_signals_version, new_signals_version,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
| 3898 | signals_to_ignore.size(), error)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0); |
| 3899 | |
| 3900 | if (error.Success()) |
| 3901 | m_last_signals_version = new_signals_version; |
| 3902 | |
| 3903 | return error; |
| 3904 | } |
| 3905 | |
| 3906 | bool ProcessGDBRemote::StartNoticingNewThreads() { |
| 3907 | Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP(1u << 7))); |
| 3908 | if (m_thread_create_bp_sp) { |
| 3909 | if (log && log->GetVerbose()) |
| 3910 | log->Printf("Enabled noticing new thread breakpoint."); |
| 3911 | m_thread_create_bp_sp->SetEnabled(true); |
| 3912 | } else { |
| 3913 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
| 3914 | if (platform_sp) { |
| 3915 | m_thread_create_bp_sp = |
| 3916 | platform_sp->SetThreadCreationBreakpoint(GetTarget()); |
| 3917 | if (m_thread_create_bp_sp) { |
| 3918 | if (log && log->GetVerbose()) |
| 3919 | log->Printf( |
| 3920 | "Successfully created new thread notification breakpoint %i", |
| 3921 | m_thread_create_bp_sp->GetID()); |
| 3922 | m_thread_create_bp_sp->SetCallback( |
| 3923 | ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); |
| 3924 | } else { |
| 3925 | if (log) |
| 3926 | log->Printf("Failed to create new thread notification breakpoint."); |
| 3927 | } |
| 3928 | } |
| 3929 | } |
| 3930 | return m_thread_create_bp_sp.get() != NULL__null; |
| 3931 | } |
| 3932 | |
| 3933 | bool ProcessGDBRemote::StopNoticingNewThreads() { |
| 3934 | Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP(1u << 7))); |
| 3935 | if (log && log->GetVerbose()) |
| 3936 | log->Printf("Disabling new thread notification breakpoint."); |
| 3937 | |
| 3938 | if (m_thread_create_bp_sp) |
| 3939 | m_thread_create_bp_sp->SetEnabled(false); |
| 3940 | |
| 3941 | return true; |
| 3942 | } |
| 3943 | |
| 3944 | DynamicLoader *ProcessGDBRemote::GetDynamicLoader() { |
| 3945 | if (m_dyld_ap.get() == NULL__null) |
| 3946 | m_dyld_ap.reset(DynamicLoader::FindPlugin(this, NULL__null)); |
| 3947 | return m_dyld_ap.get(); |
| 3948 | } |
| 3949 | |
| 3950 | Status ProcessGDBRemote::SendEventData(const char *data) { |
| 3951 | int return_value; |
| 3952 | bool was_supported; |
| 3953 | |
| 3954 | Status error; |
| 3955 | |
| 3956 | return_value = m_gdb_comm.SendLaunchEventDataPacket(data, &was_supported); |
| 3957 | if (return_value != 0) { |
| 3958 | if (!was_supported) |
| 3959 | error.SetErrorString("Sending events is not supported for this process."); |
| 3960 | else |
| 3961 | error.SetErrorStringWithFormat("Error sending event data: %d.", |
| 3962 | return_value); |
| 3963 | } |
| 3964 | return error; |
| 3965 | } |
| 3966 | |
| 3967 | const DataBufferSP ProcessGDBRemote::GetAuxvData() { |
| 3968 | DataBufferSP buf; |
| 3969 | if (m_gdb_comm.GetQXferAuxvReadSupported()) { |
| 3970 | std::string response_string; |
| 3971 | if (m_gdb_comm.SendPacketsAndConcatenateResponses("qXfer:auxv:read::", |
| 3972 | response_string) == |
| 3973 | GDBRemoteCommunication::PacketResult::Success) |
| 3974 | buf.reset(new DataBufferHeap(response_string.c_str(), |
| 3975 | response_string.length())); |
| 3976 | } |
| 3977 | return buf; |
| 3978 | } |
| 3979 | |
| 3980 | StructuredData::ObjectSP |
| 3981 | ProcessGDBRemote::GetExtendedInfoForThread(lldb::tid_t tid) { |
| 3982 | StructuredData::ObjectSP object_sp; |
| 3983 | |
| 3984 | if (m_gdb_comm.GetThreadExtendedInfoSupported()) { |
| 3985 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
| 3986 | SystemRuntime *runtime = GetSystemRuntime(); |
| 3987 | if (runtime) { |
| 3988 | runtime->AddThreadExtendedInfoPacketHints(args_dict); |
| 3989 | } |
| 3990 | args_dict->GetAsDictionary()->AddIntegerItem("thread", tid); |
| 3991 | |
| 3992 | StreamString packet; |
| 3993 | packet << "jThreadExtendedInfo:"; |
| 3994 | args_dict->Dump(packet, false); |
| 3995 | |
| 3996 | // FIXME the final character of a JSON dictionary, '}', is the escape |
| 3997 | // character in gdb-remote binary mode. lldb currently doesn't escape |
| 3998 | // these characters in its packet output -- so we add the quoted version of |
| 3999 | // the } character here manually in case we talk to a debugserver which un- |
| 4000 | // escapes the characters at packet read time. |
| 4001 | packet << (char)(0x7d ^ 0x20); |
| 4002 | |
| 4003 | StringExtractorGDBRemote response; |
| 4004 | response.SetResponseValidatorToJSON(); |
| 4005 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
| 4006 | false) == |
| 4007 | GDBRemoteCommunication::PacketResult::Success) { |
| 4008 | StringExtractorGDBRemote::ResponseType response_type = |
| 4009 | response.GetResponseType(); |
| 4010 | if (response_type == StringExtractorGDBRemote::eResponse) { |
| 4011 | if (!response.Empty()) { |
| 4012 | object_sp = StructuredData::ParseJSON(response.GetStringRef()); |
| 4013 | } |
| 4014 | } |
| 4015 | } |
| 4016 | } |
| 4017 | return object_sp; |
| 4018 | } |
| 4019 | |
| 4020 | StructuredData::ObjectSP ProcessGDBRemote::GetLoadedDynamicLibrariesInfos( |
| 4021 | lldb::addr_t image_list_address, lldb::addr_t image_count) { |
| 4022 | |
| 4023 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
| 4024 | args_dict->GetAsDictionary()->AddIntegerItem("image_list_address", |
| 4025 | image_list_address); |
| 4026 | args_dict->GetAsDictionary()->AddIntegerItem("image_count", image_count); |
| 4027 | |
| 4028 | return GetLoadedDynamicLibrariesInfos_sender(args_dict); |
| 4029 | } |
| 4030 | |
| 4031 | StructuredData::ObjectSP ProcessGDBRemote::GetLoadedDynamicLibrariesInfos() { |
| 4032 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
| 4033 | |
| 4034 | args_dict->GetAsDictionary()->AddBooleanItem("fetch_all_solibs", true); |
| 4035 | |
| 4036 | return GetLoadedDynamicLibrariesInfos_sender(args_dict); |
| 4037 | } |
| 4038 | |
| 4039 | StructuredData::ObjectSP ProcessGDBRemote::GetLoadedDynamicLibrariesInfos( |
| 4040 | const std::vector<lldb::addr_t> &load_addresses) { |
| 4041 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
| 4042 | StructuredData::ArraySP addresses(new StructuredData::Array); |
| 4043 | |
| 4044 | for (auto addr : load_addresses) { |
| 4045 | StructuredData::ObjectSP addr_sp(new StructuredData::Integer(addr)); |
| 4046 | addresses->AddItem(addr_sp); |
| 4047 | } |
| 4048 | |
| 4049 | args_dict->GetAsDictionary()->AddItem("solib_addresses", addresses); |
| 4050 | |
| 4051 | return GetLoadedDynamicLibrariesInfos_sender(args_dict); |
| 4052 | } |
| 4053 | |
| 4054 | StructuredData::ObjectSP |
| 4055 | ProcessGDBRemote::GetLoadedDynamicLibrariesInfos_sender( |
| 4056 | StructuredData::ObjectSP args_dict) { |
| 4057 | StructuredData::ObjectSP object_sp; |
| 4058 | |
| 4059 | if (m_gdb_comm.GetLoadedDynamicLibrariesInfosSupported()) { |
| 4060 | // Scope for the scoped timeout object |
| 4061 | GDBRemoteCommunication::ScopedTimeout timeout(m_gdb_comm, |
| 4062 | std::chrono::seconds(10)); |
| 4063 | |
| 4064 | StreamString packet; |
| 4065 | packet << "jGetLoadedDynamicLibrariesInfos:"; |
| 4066 | args_dict->Dump(packet, false); |
| 4067 | |
| 4068 | // FIXME the final character of a JSON dictionary, '}', is the escape |
| 4069 | // character in gdb-remote binary mode. lldb currently doesn't escape |
| 4070 | // these characters in its packet output -- so we add the quoted version of |
| 4071 | // the } character here manually in case we talk to a debugserver which un- |
| 4072 | // escapes the characters at packet read time. |
| 4073 | packet << (char)(0x7d ^ 0x20); |
| 4074 | |
| 4075 | StringExtractorGDBRemote response; |
| 4076 | response.SetResponseValidatorToJSON(); |
| 4077 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
| 4078 | false) == |
| 4079 | GDBRemoteCommunication::PacketResult::Success) { |
| 4080 | StringExtractorGDBRemote::ResponseType response_type = |
| 4081 | response.GetResponseType(); |
| 4082 | if (response_type == StringExtractorGDBRemote::eResponse) { |
| 4083 | if (!response.Empty()) { |
| 4084 | object_sp = StructuredData::ParseJSON(response.GetStringRef()); |
| 4085 | } |
| 4086 | } |
| 4087 | } |
| 4088 | } |
| 4089 | return object_sp; |
| 4090 | } |
| 4091 | |
| 4092 | StructuredData::ObjectSP ProcessGDBRemote::GetSharedCacheInfo() { |
| 4093 | StructuredData::ObjectSP object_sp; |
| 4094 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
| 4095 | |
| 4096 | if (m_gdb_comm.GetSharedCacheInfoSupported()) { |
| 4097 | StreamString packet; |
| 4098 | packet << "jGetSharedCacheInfo:"; |
| 4099 | args_dict->Dump(packet, false); |
| 4100 | |
| 4101 | // FIXME the final character of a JSON dictionary, '}', is the escape |
| 4102 | // character in gdb-remote binary mode. lldb currently doesn't escape |
| 4103 | // these characters in its packet output -- so we add the quoted version of |
| 4104 | // the } character here manually in case we talk to a debugserver which un- |
| 4105 | // escapes the characters at packet read time. |
| 4106 | packet << (char)(0x7d ^ 0x20); |
| 4107 | |
| 4108 | StringExtractorGDBRemote response; |
| 4109 | response.SetResponseValidatorToJSON(); |
| 4110 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
| 4111 | false) == |
| 4112 | GDBRemoteCommunication::PacketResult::Success) { |
| 4113 | StringExtractorGDBRemote::ResponseType response_type = |
| 4114 | response.GetResponseType(); |
| 4115 | if (response_type == StringExtractorGDBRemote::eResponse) { |
| 4116 | if (!response.Empty()) { |
| 4117 | object_sp = StructuredData::ParseJSON(response.GetStringRef()); |
| 4118 | } |
| 4119 | } |
| 4120 | } |
| 4121 | } |
| 4122 | return object_sp; |
| 4123 | } |
| 4124 | |
| 4125 | Status ProcessGDBRemote::ConfigureStructuredData( |
| 4126 | const ConstString &type_name, const StructuredData::ObjectSP &config_sp) { |
| 4127 | return m_gdb_comm.ConfigureRemoteStructuredData(type_name, config_sp); |
| 4128 | } |
| 4129 | |
| 4130 | // Establish the largest memory read/write payloads we should use. If the |
| 4131 | // remote stub has a max packet size, stay under that size. |
| 4132 | // |
| 4133 | // If the remote stub's max packet size is crazy large, use a reasonable |
| 4134 | // largeish default. |
| 4135 | // |
| 4136 | // If the remote stub doesn't advertise a max packet size, use a conservative |
| 4137 | // default. |
| 4138 | |
| 4139 | void ProcessGDBRemote::GetMaxMemorySize() { |
| 4140 | const uint64_t reasonable_largeish_default = 128 * 1024; |
| 4141 | const uint64_t conservative_default = 512; |
| 4142 | |
| 4143 | if (m_max_memory_size == 0) { |
| 4144 | uint64_t stub_max_size = m_gdb_comm.GetRemoteMaxPacketSize(); |
| 4145 | if (stub_max_size != UINT64_MAX(18446744073709551615UL) && stub_max_size != 0) { |
| 4146 | // Save the stub's claimed maximum packet size |
| 4147 | m_remote_stub_max_memory_size = stub_max_size; |
| 4148 | |
| 4149 | // Even if the stub says it can support ginormous packets, don't exceed |
| 4150 | // our reasonable largeish default packet size. |
| 4151 | if (stub_max_size > reasonable_largeish_default) { |
| 4152 | stub_max_size = reasonable_largeish_default; |
| 4153 | } |
| 4154 | |
| 4155 | // Memory packet have other overheads too like Maddr,size:#NN Instead of |
| 4156 | // calculating the bytes taken by size and addr every time, we take a |
| 4157 | // maximum guess here. |
| 4158 | if (stub_max_size > 70) |
| 4159 | stub_max_size -= 32 + 32 + 6; |
| 4160 | else { |
| 4161 | // In unlikely scenario that max packet size is less then 70, we will |
| 4162 | // hope that data being written is small enough to fit. |
| 4163 | Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet( |
| 4164 | GDBR_LOG_COMM(1u << 10) | GDBR_LOG_MEMORY(1u << 4))); |
| 4165 | if (log) |
| 4166 | log->Warning("Packet size is too small. " |
| 4167 | "LLDB may face problems while writing memory"); |
| 4168 | } |
| 4169 | |
| 4170 | m_max_memory_size = stub_max_size; |
| 4171 | } else { |
| 4172 | m_max_memory_size = conservative_default; |
| 4173 | } |
| 4174 | } |
| 4175 | } |
| 4176 | |
| 4177 | void ProcessGDBRemote::SetUserSpecifiedMaxMemoryTransferSize( |
| 4178 | uint64_t user_specified_max) { |
| 4179 | if (user_specified_max != 0) { |
| 4180 | GetMaxMemorySize(); |
| 4181 | |
| 4182 | if (m_remote_stub_max_memory_size != 0) { |
| 4183 | if (m_remote_stub_max_memory_size < user_specified_max) { |
| 4184 | m_max_memory_size = m_remote_stub_max_memory_size; // user specified a |
| 4185 | // packet size too |
| 4186 | // big, go as big |
| 4187 | // as the remote stub says we can go. |
| 4188 | } else { |
| 4189 | m_max_memory_size = user_specified_max; // user's packet size is good |
| 4190 | } |
| 4191 | } else { |
| 4192 | m_max_memory_size = |
| 4193 | user_specified_max; // user's packet size is probably fine |
| 4194 | } |
| 4195 | } |
| 4196 | } |
| 4197 | |
| 4198 | bool ProcessGDBRemote::GetModuleSpec(const FileSpec &module_file_spec, |
| 4199 | const ArchSpec &arch, |
| 4200 | ModuleSpec &module_spec) { |
| 4201 | Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM(1u << 25)); |
| 4202 | |
| 4203 | const ModuleCacheKey key(module_file_spec.GetPath(), |
| 4204 | arch.GetTriple().getTriple()); |
| 4205 | auto cached = m_cached_module_specs.find(key); |
| 4206 | if (cached != m_cached_module_specs.end()) { |
| 4207 | module_spec = cached->second; |
| 4208 | return bool(module_spec); |
| 4209 | } |
| 4210 | |
| 4211 | if (!m_gdb_comm.GetModuleInfo(module_file_spec, arch, module_spec)) { |
| 4212 | if (log) |
| 4213 | log->Printf("ProcessGDBRemote::%s - failed to get module info for %s:%s", |
| 4214 | __FUNCTION__, module_file_spec.GetPath().c_str(), |
| 4215 | arch.GetTriple().getTriple().c_str()); |
| 4216 | return false; |
| 4217 | } |
| 4218 | |
| 4219 | if (log) { |
| 4220 | StreamString stream; |
| 4221 | module_spec.Dump(stream); |
| 4222 | log->Printf("ProcessGDBRemote::%s - got module info for (%s:%s) : %s", |
| 4223 | __FUNCTION__, module_file_spec.GetPath().c_str(), |
| 4224 | arch.GetTriple().getTriple().c_str(), stream.GetData()); |
| 4225 | } |
| 4226 | |
| 4227 | m_cached_module_specs[key] = module_spec; |
| 4228 | return true; |
| 4229 | } |
| 4230 | |
| 4231 | void ProcessGDBRemote::PrefetchModuleSpecs( |
| 4232 | llvm::ArrayRef<FileSpec> module_file_specs, const llvm::Triple &triple) { |
| 4233 | auto module_specs = m_gdb_comm.GetModulesInfo(module_file_specs, triple); |
| 4234 | if (module_specs) { |
| 4235 | for (const FileSpec &spec : module_file_specs) |
| 4236 | m_cached_module_specs[ModuleCacheKey(spec.GetPath(), |
| 4237 | triple.getTriple())] = ModuleSpec(); |
| 4238 | for (const ModuleSpec &spec : *module_specs) |
| 4239 | m_cached_module_specs[ModuleCacheKey(spec.GetFileSpec().GetPath(), |
| 4240 | triple.getTriple())] = spec; |
| 4241 | } |
| 4242 | } |
| 4243 | |
| 4244 | llvm::VersionTuple ProcessGDBRemote::GetHostOSVersion() { |
| 4245 | return m_gdb_comm.GetOSVersion(); |
| 4246 | } |
| 4247 | |
| 4248 | namespace { |
| 4249 | |
| 4250 | typedef std::vector<std::string> stringVec; |
| 4251 | |
| 4252 | typedef std::vector<struct GdbServerRegisterInfo> GDBServerRegisterVec; |
| 4253 | struct RegisterSetInfo { |
| 4254 | ConstString name; |
| 4255 | }; |
| 4256 | |
| 4257 | typedef std::map<uint32_t, RegisterSetInfo> RegisterSetMap; |
| 4258 | |
| 4259 | struct GdbServerTargetInfo { |
| 4260 | std::string arch; |
| 4261 | std::string osabi; |
| 4262 | stringVec includes; |
| 4263 | RegisterSetMap reg_set_map; |
| 4264 | }; |
| 4265 | |
| 4266 | bool ParseRegisters(XMLNode feature_node, GdbServerTargetInfo &target_info, |
| 4267 | GDBRemoteDynamicRegisterInfo &dyn_reg_info, ABISP abi_sp, |
| 4268 | uint32_t &cur_reg_num, uint32_t ®_offset) { |
| 4269 | if (!feature_node) |
| 4270 | return false; |
| 4271 | |
| 4272 | feature_node.ForEachChildElementWithName( |
| 4273 | "reg", [&target_info, &dyn_reg_info, &cur_reg_num, ®_offset, |
| 4274 | &abi_sp](const XMLNode ®_node) -> bool { |
| 4275 | std::string gdb_group; |
| 4276 | std::string gdb_type; |
| 4277 | ConstString reg_name; |
| 4278 | ConstString alt_name; |
| 4279 | ConstString set_name; |
| 4280 | std::vector<uint32_t> value_regs; |
| 4281 | std::vector<uint32_t> invalidate_regs; |
| 4282 | std::vector<uint8_t> dwarf_opcode_bytes; |
| 4283 | bool encoding_set = false; |
| 4284 | bool format_set = false; |
| 4285 | RegisterInfo reg_info = { |
| 4286 | NULL__null, // Name |
| 4287 | NULL__null, // Alt name |
| 4288 | 0, // byte size |
| 4289 | reg_offset, // offset |
| 4290 | eEncodingUint, // encoding |
| 4291 | eFormatHex, // format |
| 4292 | { |
| 4293 | LLDB_INVALID_REGNUM(4294967295U), // eh_frame reg num |
| 4294 | LLDB_INVALID_REGNUM(4294967295U), // DWARF reg num |
| 4295 | LLDB_INVALID_REGNUM(4294967295U), // generic reg num |
| 4296 | cur_reg_num, // process plugin reg num |
| 4297 | cur_reg_num // native register number |
| 4298 | }, |
| 4299 | NULL__null, |
| 4300 | NULL__null, |
| 4301 | NULL__null, // Dwarf Expression opcode bytes pointer |
| 4302 | 0 // Dwarf Expression opcode bytes length |
| 4303 | }; |
| 4304 | |
| 4305 | reg_node.ForEachAttribute([&target_info, &gdb_group, &gdb_type, |
| 4306 | ®_name, &alt_name, &set_name, &value_regs, |
| 4307 | &invalidate_regs, &encoding_set, &format_set, |
| 4308 | ®_info, ®_offset, &dwarf_opcode_bytes]( |
| 4309 | const llvm::StringRef &name, |
| 4310 | const llvm::StringRef &value) -> bool { |
| 4311 | if (name == "name") { |
| 4312 | reg_name.SetString(value); |
| 4313 | } else if (name == "bitsize") { |
| 4314 | reg_info.byte_size = |
| 4315 | StringConvert::ToUInt32(value.data(), 0, 0) / CHAR_BIT8; |
| 4316 | } else if (name == "type") { |
| 4317 | gdb_type = value.str(); |
| 4318 | } else if (name == "group") { |
| 4319 | gdb_group = value.str(); |
| 4320 | } else if (name == "regnum") { |
| 4321 | const uint32_t regnum = |
| 4322 | StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM(4294967295U), 0); |
| 4323 | if (regnum != LLDB_INVALID_REGNUM(4294967295U)) { |
| 4324 | reg_info.kinds[eRegisterKindProcessPlugin] = regnum; |
| 4325 | } |
| 4326 | } else if (name == "offset") { |
| 4327 | reg_offset = StringConvert::ToUInt32(value.data(), UINT32_MAX(4294967295U), 0); |
| 4328 | } else if (name == "altname") { |
| 4329 | alt_name.SetString(value); |
| 4330 | } else if (name == "encoding") { |
| 4331 | encoding_set = true; |
| 4332 | reg_info.encoding = Args::StringToEncoding(value, eEncodingUint); |
| 4333 | } else if (name == "format") { |
| 4334 | format_set = true; |
| 4335 | Format format = eFormatInvalid; |
| 4336 | if (OptionArgParser::ToFormat(value.data(), format, NULL__null).Success()) |
| 4337 | reg_info.format = format; |
| 4338 | else if (value == "vector-sint8") |
| 4339 | reg_info.format = eFormatVectorOfSInt8; |
| 4340 | else if (value == "vector-uint8") |
| 4341 | reg_info.format = eFormatVectorOfUInt8; |
| 4342 | else if (value == "vector-sint16") |
| 4343 | reg_info.format = eFormatVectorOfSInt16; |
| 4344 | else if (value == "vector-uint16") |
| 4345 | reg_info.format = eFormatVectorOfUInt16; |
| 4346 | else if (value == "vector-sint32") |
| 4347 | reg_info.format = eFormatVectorOfSInt32; |
| 4348 | else if (value == "vector-uint32") |
| 4349 | reg_info.format = eFormatVectorOfUInt32; |
| 4350 | else if (value == "vector-float32") |
| 4351 | reg_info.format = eFormatVectorOfFloat32; |
| 4352 | else if (value == "vector-uint64") |
| 4353 | reg_info.format = eFormatVectorOfUInt64; |
| 4354 | else if (value == "vector-uint128") |
| 4355 | reg_info.format = eFormatVectorOfUInt128; |
| 4356 | } else if (name == "group_id") { |
| 4357 | const uint32_t set_id = |
| 4358 | StringConvert::ToUInt32(value.data(), UINT32_MAX(4294967295U), 0); |
| 4359 | RegisterSetMap::const_iterator pos = |
| 4360 | target_info.reg_set_map.find(set_id); |
| 4361 | if (pos != target_info.reg_set_map.end()) |
| 4362 | set_name = pos->second.name; |
| 4363 | } else if (name == "gcc_regnum" || name == "ehframe_regnum") { |
| 4364 | reg_info.kinds[eRegisterKindEHFrame] = |
| 4365 | StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM(4294967295U), 0); |
| 4366 | } else if (name == "dwarf_regnum") { |
| 4367 | reg_info.kinds[eRegisterKindDWARF] = |
| 4368 | StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM(4294967295U), 0); |
| 4369 | } else if (name == "generic") { |
| 4370 | reg_info.kinds[eRegisterKindGeneric] = |
| 4371 | Args::StringToGenericRegister(value); |
| 4372 | } else if (name == "value_regnums") { |
| 4373 | SplitCommaSeparatedRegisterNumberString(value, value_regs, 0); |
| 4374 | } else if (name == "invalidate_regnums") { |
| 4375 | SplitCommaSeparatedRegisterNumberString(value, invalidate_regs, 0); |
| 4376 | } else if (name == "dynamic_size_dwarf_expr_bytes") { |
| 4377 | StringExtractor opcode_extractor; |
| 4378 | std::string opcode_string = value.str(); |
| 4379 | size_t dwarf_opcode_len = opcode_string.length() / 2; |
| 4380 | assert(dwarf_opcode_len > 0)((dwarf_opcode_len > 0) ? static_cast<void> (0) : __assert_fail ("dwarf_opcode_len > 0", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 4380, __PRETTY_FUNCTION__)); |
| 4381 | |
| 4382 | dwarf_opcode_bytes.resize(dwarf_opcode_len); |
| 4383 | reg_info.dynamic_size_dwarf_len = dwarf_opcode_len; |
| 4384 | opcode_extractor.GetStringRef().swap(opcode_string); |
| 4385 | uint32_t ret_val = |
| 4386 | opcode_extractor.GetHexBytesAvail(dwarf_opcode_bytes); |
| 4387 | assert(dwarf_opcode_len == ret_val)((dwarf_opcode_len == ret_val) ? static_cast<void> (0) : __assert_fail ("dwarf_opcode_len == ret_val", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 4387, __PRETTY_FUNCTION__)); |
| 4388 | UNUSED_IF_ASSERT_DISABLED(ret_val)((void)(ret_val)); |
| 4389 | reg_info.dynamic_size_dwarf_expr_bytes = dwarf_opcode_bytes.data(); |
| 4390 | } else { |
| 4391 | printf("unhandled attribute %s = %s\n", name.data(), value.data()); |
| 4392 | } |
| 4393 | return true; // Keep iterating through all attributes |
| 4394 | }); |
| 4395 | |
| 4396 | if (!gdb_type.empty() && !(encoding_set || format_set)) { |
| 4397 | if (gdb_type.find("int") == 0) { |
| 4398 | reg_info.format = eFormatHex; |
| 4399 | reg_info.encoding = eEncodingUint; |
| 4400 | } else if (gdb_type == "data_ptr" || gdb_type == "code_ptr") { |
| 4401 | reg_info.format = eFormatAddressInfo; |
| 4402 | reg_info.encoding = eEncodingUint; |
| 4403 | } else if (gdb_type == "i387_ext" || gdb_type == "float") { |
| 4404 | reg_info.format = eFormatFloat; |
| 4405 | reg_info.encoding = eEncodingIEEE754; |
| 4406 | } |
| 4407 | } |
| 4408 | |
| 4409 | // Only update the register set name if we didn't get a "reg_set" |
| 4410 | // attribute. "set_name" will be empty if we didn't have a "reg_set" |
| 4411 | // attribute. |
| 4412 | if (!set_name && !gdb_group.empty()) |
| 4413 | set_name.SetCString(gdb_group.c_str()); |
| 4414 | |
| 4415 | reg_info.byte_offset = reg_offset; |
| 4416 | assert(reg_info.byte_size != 0)((reg_info.byte_size != 0) ? static_cast<void> (0) : __assert_fail ("reg_info.byte_size != 0", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 4416, __PRETTY_FUNCTION__)); |
| 4417 | reg_offset += reg_info.byte_size; |
| 4418 | if (!value_regs.empty()) { |
| 4419 | value_regs.push_back(LLDB_INVALID_REGNUM(4294967295U)); |
| 4420 | reg_info.value_regs = value_regs.data(); |
| 4421 | } |
| 4422 | if (!invalidate_regs.empty()) { |
| 4423 | invalidate_regs.push_back(LLDB_INVALID_REGNUM(4294967295U)); |
| 4424 | reg_info.invalidate_regs = invalidate_regs.data(); |
| 4425 | } |
| 4426 | |
| 4427 | ++cur_reg_num; |
| 4428 | AugmentRegisterInfoViaABI(reg_info, reg_name, abi_sp); |
| 4429 | dyn_reg_info.AddRegister(reg_info, reg_name, alt_name, set_name); |
| 4430 | |
| 4431 | return true; // Keep iterating through all "reg" elements |
| 4432 | }); |
| 4433 | return true; |
| 4434 | } |
| 4435 | |
| 4436 | } // namespace {} |
| 4437 | |
| 4438 | // query the target of gdb-remote for extended target information return: |
| 4439 | // 'true' on success |
| 4440 | // 'false' on failure |
| 4441 | bool ProcessGDBRemote::GetGDBServerRegisterInfo(ArchSpec &arch_to_use) { |
| 4442 | // Make sure LLDB has an XML parser it can use first |
| 4443 | if (!XMLDocument::XMLEnabled()) |
| 4444 | return false; |
| 4445 | |
| 4446 | // redirect libxml2's error handler since the default prints to stdout |
| 4447 | |
| 4448 | GDBRemoteCommunicationClient &comm = m_gdb_comm; |
| 4449 | |
| 4450 | // check that we have extended feature read support |
| 4451 | if (!comm.GetQXferFeaturesReadSupported()) |
| 4452 | return false; |
| 4453 | |
| 4454 | // request the target xml file |
| 4455 | std::string raw; |
| 4456 | lldb_private::Status lldberr; |
| 4457 | if (!comm.ReadExtFeature(ConstString("features"), ConstString("target.xml"), |
| 4458 | raw, lldberr)) { |
| 4459 | return false; |
| 4460 | } |
| 4461 | |
| 4462 | XMLDocument xml_document; |
| 4463 | |
| 4464 | if (xml_document.ParseMemory(raw.c_str(), raw.size(), "target.xml")) { |
| 4465 | GdbServerTargetInfo target_info; |
| 4466 | |
| 4467 | XMLNode target_node = xml_document.GetRootElement("target"); |
| 4468 | if (target_node) { |
| 4469 | std::vector<XMLNode> feature_nodes; |
| 4470 | target_node.ForEachChildElement([&target_info, &feature_nodes]( |
| 4471 | const XMLNode &node) -> bool { |
| 4472 | llvm::StringRef name = node.GetName(); |
| 4473 | if (name == "architecture") { |
| 4474 | node.GetElementText(target_info.arch); |
| 4475 | } else if (name == "osabi") { |
| 4476 | node.GetElementText(target_info.osabi); |
| 4477 | } else if (name == "xi:include" || name == "include") { |
| 4478 | llvm::StringRef href = node.GetAttributeValue("href"); |
| 4479 | if (!href.empty()) |
| 4480 | target_info.includes.push_back(href.str()); |
| 4481 | } else if (name == "feature") { |
| 4482 | feature_nodes.push_back(node); |
| 4483 | } else if (name == "groups") { |
| 4484 | node.ForEachChildElementWithName( |
| 4485 | "group", [&target_info](const XMLNode &node) -> bool { |
| 4486 | uint32_t set_id = UINT32_MAX(4294967295U); |
| 4487 | RegisterSetInfo set_info; |
| 4488 | |
| 4489 | node.ForEachAttribute( |
| 4490 | [&set_id, &set_info](const llvm::StringRef &name, |
| 4491 | const llvm::StringRef &value) -> bool { |
| 4492 | if (name == "id") |
| 4493 | set_id = StringConvert::ToUInt32(value.data(), |
| 4494 | UINT32_MAX(4294967295U), 0); |
| 4495 | if (name == "name") |
| 4496 | set_info.name = ConstString(value); |
| 4497 | return true; // Keep iterating through all attributes |
| 4498 | }); |
| 4499 | |
| 4500 | if (set_id != UINT32_MAX(4294967295U)) |
| 4501 | target_info.reg_set_map[set_id] = set_info; |
| 4502 | return true; // Keep iterating through all "group" elements |
| 4503 | }); |
| 4504 | } |
| 4505 | return true; // Keep iterating through all children of the target_node |
| 4506 | }); |
| 4507 | |
| 4508 | // If the target.xml includes an architecture entry like |
| 4509 | // <architecture>i386:x86-64</architecture> (seen from VMWare ESXi) |
| 4510 | // <architecture>arm</architecture> (seen from Segger JLink on unspecified arm board) |
| 4511 | // use that if we don't have anything better. |
| 4512 | if (!arch_to_use.IsValid() && !target_info.arch.empty()) { |
| 4513 | if (target_info.arch == "i386:x86-64") { |
| 4514 | // We don't have any information about vendor or OS. |
| 4515 | arch_to_use.SetTriple("x86_64--"); |
| 4516 | GetTarget().MergeArchitecture(arch_to_use); |
| 4517 | } |
| 4518 | |
| 4519 | // SEGGER J-Link jtag boards send this very-generic arch name, |
| 4520 | // we'll need to use this if we have absolutely nothing better |
| 4521 | // to work with or the register definitions won't be accepted. |
| 4522 | if (target_info.arch == "arm") { |
| 4523 | arch_to_use.SetTriple("arm--"); |
| 4524 | GetTarget().MergeArchitecture(arch_to_use); |
| 4525 | } |
| 4526 | } |
| 4527 | |
| 4528 | // Initialize these outside of ParseRegisters, since they should not be |
| 4529 | // reset inside each include feature |
| 4530 | uint32_t cur_reg_num = 0; |
| 4531 | uint32_t reg_offset = 0; |
| 4532 | |
| 4533 | // Don't use Process::GetABI, this code gets called from DidAttach, and |
| 4534 | // in that context we haven't set the Target's architecture yet, so the |
| 4535 | // ABI is also potentially incorrect. |
| 4536 | ABISP abi_to_use_sp = ABI::FindPlugin(shared_from_this(), arch_to_use); |
| 4537 | for (auto &feature_node : feature_nodes) { |
| 4538 | ParseRegisters(feature_node, target_info, this->m_register_info, |
| 4539 | abi_to_use_sp, cur_reg_num, reg_offset); |
| 4540 | } |
| 4541 | |
| 4542 | for (const auto &include : target_info.includes) { |
| 4543 | // request register file |
| 4544 | std::string xml_data; |
| 4545 | if (!comm.ReadExtFeature(ConstString("features"), ConstString(include), |
| 4546 | xml_data, lldberr)) |
| 4547 | continue; |
| 4548 | |
| 4549 | XMLDocument include_xml_document; |
| 4550 | include_xml_document.ParseMemory(xml_data.data(), xml_data.size(), |
| 4551 | include.c_str()); |
| 4552 | XMLNode include_feature_node = |
| 4553 | include_xml_document.GetRootElement("feature"); |
| 4554 | if (include_feature_node) { |
| 4555 | ParseRegisters(include_feature_node, target_info, |
| 4556 | this->m_register_info, abi_to_use_sp, cur_reg_num, |
| 4557 | reg_offset); |
| 4558 | } |
| 4559 | } |
| 4560 | this->m_register_info.Finalize(arch_to_use); |
| 4561 | } |
| 4562 | } |
| 4563 | |
| 4564 | return m_register_info.GetNumRegisters() > 0; |
| 4565 | } |
| 4566 | |
| 4567 | Status ProcessGDBRemote::GetLoadedModuleList(LoadedModuleInfoList &list) { |
| 4568 | // Make sure LLDB has an XML parser it can use first |
| 4569 | if (!XMLDocument::XMLEnabled()) |
| 4570 | return Status(0, ErrorType::eErrorTypeGeneric); |
| 4571 | |
| 4572 | Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS(1u << 1)); |
| 4573 | if (log) |
| 4574 | log->Printf("ProcessGDBRemote::%s", __FUNCTION__); |
| 4575 | |
| 4576 | GDBRemoteCommunicationClient &comm = m_gdb_comm; |
| 4577 | |
| 4578 | // check that we have extended feature read support |
| 4579 | if (comm.GetQXferLibrariesSVR4ReadSupported()) { |
| 4580 | list.clear(); |
| 4581 | |
| 4582 | // request the loaded library list |
| 4583 | std::string raw; |
| 4584 | lldb_private::Status lldberr; |
| 4585 | |
| 4586 | if (!comm.ReadExtFeature(ConstString("libraries-svr4"), ConstString(""), |
| 4587 | raw, lldberr)) |
| 4588 | return Status(0, ErrorType::eErrorTypeGeneric); |
| 4589 | |
| 4590 | // parse the xml file in memory |
| 4591 | if (log) |
| 4592 | log->Printf("parsing: %s", raw.c_str()); |
| 4593 | XMLDocument doc; |
| 4594 | |
| 4595 | if (!doc.ParseMemory(raw.c_str(), raw.size(), "noname.xml")) |
| 4596 | return Status(0, ErrorType::eErrorTypeGeneric); |
| 4597 | |
| 4598 | XMLNode root_element = doc.GetRootElement("library-list-svr4"); |
| 4599 | if (!root_element) |
| 4600 | return Status(); |
| 4601 | |
| 4602 | // main link map structure |
| 4603 | llvm::StringRef main_lm = root_element.GetAttributeValue("main-lm"); |
| 4604 | if (!main_lm.empty()) { |
| 4605 | list.m_link_map = |
| 4606 | StringConvert::ToUInt64(main_lm.data(), LLDB_INVALID_ADDRESS(18446744073709551615UL), 0); |
| 4607 | } |
| 4608 | |
| 4609 | root_element.ForEachChildElementWithName( |
| 4610 | "library", [log, &list](const XMLNode &library) -> bool { |
| 4611 | |
| 4612 | LoadedModuleInfoList::LoadedModuleInfo module; |
| 4613 | |
| 4614 | library.ForEachAttribute( |
| 4615 | [&module](const llvm::StringRef &name, |
| 4616 | const llvm::StringRef &value) -> bool { |
| 4617 | |
| 4618 | if (name == "name") |
| 4619 | module.set_name(value.str()); |
| 4620 | else if (name == "lm") { |
| 4621 | // the address of the link_map struct. |
| 4622 | module.set_link_map(StringConvert::ToUInt64( |
| 4623 | value.data(), LLDB_INVALID_ADDRESS(18446744073709551615UL), 0)); |
| 4624 | } else if (name == "l_addr") { |
| 4625 | // the displacement as read from the field 'l_addr' of the |
| 4626 | // link_map struct. |
| 4627 | module.set_base(StringConvert::ToUInt64( |
| 4628 | value.data(), LLDB_INVALID_ADDRESS(18446744073709551615UL), 0)); |
| 4629 | // base address is always a displacement, not an absolute |
| 4630 | // value. |
| 4631 | module.set_base_is_offset(true); |
| 4632 | } else if (name == "l_ld") { |
| 4633 | // the memory address of the libraries PT_DYAMIC section. |
| 4634 | module.set_dynamic(StringConvert::ToUInt64( |
| 4635 | value.data(), LLDB_INVALID_ADDRESS(18446744073709551615UL), 0)); |
| 4636 | } |
| 4637 | |
| 4638 | return true; // Keep iterating over all properties of "library" |
| 4639 | }); |
| 4640 | |
| 4641 | if (log) { |
| 4642 | std::string name; |
| 4643 | lldb::addr_t lm = 0, base = 0, ld = 0; |
| 4644 | bool base_is_offset; |
| 4645 | |
| 4646 | module.get_name(name); |
| 4647 | module.get_link_map(lm); |
| 4648 | module.get_base(base); |
| 4649 | module.get_base_is_offset(base_is_offset); |
| 4650 | module.get_dynamic(ld); |
| 4651 | |
| 4652 | log->Printf("found (link_map:0x%08" PRIx64"l" "x" ", base:0x%08" PRIx64"l" "x" |
| 4653 | "[%s], ld:0x%08" PRIx64"l" "x" ", name:'%s')", |
| 4654 | lm, base, (base_is_offset ? "offset" : "absolute"), ld, |
| 4655 | name.c_str()); |
| 4656 | } |
| 4657 | |
| 4658 | list.add(module); |
| 4659 | return true; // Keep iterating over all "library" elements in the root |
| 4660 | // node |
| 4661 | }); |
| 4662 | |
| 4663 | if (log) |
| 4664 | log->Printf("found %" PRId32"d" " modules in total", |
| 4665 | (int)list.m_list.size()); |
| 4666 | } else if (comm.GetQXferLibrariesReadSupported()) { |
| 4667 | list.clear(); |
| 4668 | |
| 4669 | // request the loaded library list |
| 4670 | std::string raw; |
| 4671 | lldb_private::Status lldberr; |
| 4672 | |
| 4673 | if (!comm.ReadExtFeature(ConstString("libraries"), ConstString(""), raw, |
| 4674 | lldberr)) |
| 4675 | return Status(0, ErrorType::eErrorTypeGeneric); |
| 4676 | |
| 4677 | if (log) |
| 4678 | log->Printf("parsing: %s", raw.c_str()); |
| 4679 | XMLDocument doc; |
| 4680 | |
| 4681 | if (!doc.ParseMemory(raw.c_str(), raw.size(), "noname.xml")) |
| 4682 | return Status(0, ErrorType::eErrorTypeGeneric); |
| 4683 | |
| 4684 | XMLNode root_element = doc.GetRootElement("library-list"); |
| 4685 | if (!root_element) |
| 4686 | return Status(); |
| 4687 | |
| 4688 | root_element.ForEachChildElementWithName( |
| 4689 | "library", [log, &list](const XMLNode &library) -> bool { |
| 4690 | LoadedModuleInfoList::LoadedModuleInfo module; |
| 4691 | |
| 4692 | llvm::StringRef name = library.GetAttributeValue("name"); |
| 4693 | module.set_name(name.str()); |
| 4694 | |
| 4695 | // The base address of a given library will be the address of its |
| 4696 | // first section. Most remotes send only one section for Windows |
| 4697 | // targets for example. |
| 4698 | const XMLNode §ion = |
| 4699 | library.FindFirstChildElementWithName("section"); |
| 4700 | llvm::StringRef address = section.GetAttributeValue("address"); |
| 4701 | module.set_base( |
| 4702 | StringConvert::ToUInt64(address.data(), LLDB_INVALID_ADDRESS(18446744073709551615UL), 0)); |
| 4703 | // These addresses are absolute values. |
| 4704 | module.set_base_is_offset(false); |
| 4705 | |
| 4706 | if (log) { |
| 4707 | std::string name; |
| 4708 | lldb::addr_t base = 0; |
| 4709 | bool base_is_offset; |
| 4710 | module.get_name(name); |
| 4711 | module.get_base(base); |
| 4712 | module.get_base_is_offset(base_is_offset); |
| 4713 | |
| 4714 | log->Printf("found (base:0x%08" PRIx64"l" "x" "[%s], name:'%s')", base, |
| 4715 | (base_is_offset ? "offset" : "absolute"), name.c_str()); |
| 4716 | } |
| 4717 | |
| 4718 | list.add(module); |
| 4719 | return true; // Keep iterating over all "library" elements in the root |
| 4720 | // node |
| 4721 | }); |
| 4722 | |
| 4723 | if (log) |
| 4724 | log->Printf("found %" PRId32"d" " modules in total", |
| 4725 | (int)list.m_list.size()); |
| 4726 | } else { |
| 4727 | return Status(0, ErrorType::eErrorTypeGeneric); |
| 4728 | } |
| 4729 | |
| 4730 | return Status(); |
| 4731 | } |
| 4732 | |
| 4733 | lldb::ModuleSP ProcessGDBRemote::LoadModuleAtAddress(const FileSpec &file, |
| 4734 | lldb::addr_t link_map, |
| 4735 | lldb::addr_t base_addr, |
| 4736 | bool value_is_offset) { |
| 4737 | DynamicLoader *loader = GetDynamicLoader(); |
| 4738 | if (!loader) |
| 4739 | return nullptr; |
| 4740 | |
| 4741 | return loader->LoadModuleAtAddress(file, link_map, base_addr, |
| 4742 | value_is_offset); |
| 4743 | } |
| 4744 | |
| 4745 | size_t ProcessGDBRemote::LoadModules(LoadedModuleInfoList &module_list) { |
| 4746 | using lldb_private::process_gdb_remote::ProcessGDBRemote; |
| 4747 | |
| 4748 | // request a list of loaded libraries from GDBServer |
| 4749 | if (GetLoadedModuleList(module_list).Fail()) |
| 4750 | return 0; |
| 4751 | |
| 4752 | // get a list of all the modules |
| 4753 | ModuleList new_modules; |
| 4754 | |
| 4755 | for (LoadedModuleInfoList::LoadedModuleInfo &modInfo : module_list.m_list) { |
| 4756 | std::string mod_name; |
| 4757 | lldb::addr_t mod_base; |
| 4758 | lldb::addr_t link_map; |
| 4759 | bool mod_base_is_offset; |
| 4760 | |
| 4761 | bool valid = true; |
| 4762 | valid &= modInfo.get_name(mod_name); |
| 4763 | valid &= modInfo.get_base(mod_base); |
| 4764 | valid &= modInfo.get_base_is_offset(mod_base_is_offset); |
| 4765 | if (!valid) |
| 4766 | continue; |
| 4767 | |
| 4768 | if (!modInfo.get_link_map(link_map)) |
| 4769 | link_map = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 4770 | |
| 4771 | FileSpec file(mod_name, true); |
| 4772 | lldb::ModuleSP module_sp = |
| 4773 | LoadModuleAtAddress(file, link_map, mod_base, mod_base_is_offset); |
| 4774 | |
| 4775 | if (module_sp.get()) |
| 4776 | new_modules.Append(module_sp); |
| 4777 | } |
| 4778 | |
| 4779 | if (new_modules.GetSize() > 0) { |
| 4780 | ModuleList removed_modules; |
| 4781 | Target &target = GetTarget(); |
| 4782 | ModuleList &loaded_modules = m_process->GetTarget().GetImages(); |
| 4783 | |
| 4784 | for (size_t i = 0; i < loaded_modules.GetSize(); ++i) { |
| 4785 | const lldb::ModuleSP loaded_module = loaded_modules.GetModuleAtIndex(i); |
| 4786 | |
| 4787 | bool found = false; |
| 4788 | for (size_t j = 0; j < new_modules.GetSize(); ++j) { |
| 4789 | if (new_modules.GetModuleAtIndex(j).get() == loaded_module.get()) |
| 4790 | found = true; |
| 4791 | } |
| 4792 | |
| 4793 | // The main executable will never be included in libraries-svr4, don't |
| 4794 | // remove it |
| 4795 | if (!found && |
| 4796 | loaded_module.get() != target.GetExecutableModulePointer()) { |
| 4797 | removed_modules.Append(loaded_module); |
| 4798 | } |
| 4799 | } |
| 4800 | |
| 4801 | loaded_modules.Remove(removed_modules); |
| 4802 | m_process->GetTarget().ModulesDidUnload(removed_modules, false); |
| 4803 | |
| 4804 | new_modules.ForEach([&target](const lldb::ModuleSP module_sp) -> bool { |
| 4805 | lldb_private::ObjectFile *obj = module_sp->GetObjectFile(); |
| 4806 | if (!obj) |
| 4807 | return true; |
| 4808 | |
| 4809 | if (obj->GetType() != ObjectFile::Type::eTypeExecutable) |
| 4810 | return true; |
| 4811 | |
| 4812 | lldb::ModuleSP module_copy_sp = module_sp; |
| 4813 | target.SetExecutableModule(module_copy_sp, eLoadDependentsNo); |
| 4814 | return false; |
| 4815 | }); |
| 4816 | |
| 4817 | loaded_modules.AppendIfNeeded(new_modules); |
| 4818 | m_process->GetTarget().ModulesDidLoad(new_modules); |
| 4819 | } |
| 4820 | |
| 4821 | return new_modules.GetSize(); |
| 4822 | } |
| 4823 | |
| 4824 | size_t ProcessGDBRemote::LoadModules() { |
| 4825 | LoadedModuleInfoList module_list; |
| 4826 | return LoadModules(module_list); |
| 4827 | } |
| 4828 | |
| 4829 | Status ProcessGDBRemote::GetFileLoadAddress(const FileSpec &file, |
| 4830 | bool &is_loaded, |
| 4831 | lldb::addr_t &load_addr) { |
| 4832 | is_loaded = false; |
| 4833 | load_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 4834 | |
| 4835 | std::string file_path = file.GetPath(false); |
| 4836 | if (file_path.empty()) |
| 4837 | return Status("Empty file name specified"); |
| 4838 | |
| 4839 | StreamString packet; |
| 4840 | packet.PutCString("qFileLoadAddress:"); |
| 4841 | packet.PutCStringAsRawHex8(file_path.c_str()); |
| 4842 | |
| 4843 | StringExtractorGDBRemote response; |
| 4844 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
| 4845 | false) != |
| 4846 | GDBRemoteCommunication::PacketResult::Success) |
| 4847 | return Status("Sending qFileLoadAddress packet failed"); |
| 4848 | |
| 4849 | if (response.IsErrorResponse()) { |
| 4850 | if (response.GetError() == 1) { |
| 4851 | // The file is not loaded into the inferior |
| 4852 | is_loaded = false; |
| 4853 | load_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 4854 | return Status(); |
| 4855 | } |
| 4856 | |
| 4857 | return Status( |
| 4858 | "Fetching file load address from remote server returned an error"); |
| 4859 | } |
| 4860 | |
| 4861 | if (response.IsNormalResponse()) { |
| 4862 | is_loaded = true; |
| 4863 | load_addr = response.GetHexMaxU64(false, LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
| 4864 | return Status(); |
| 4865 | } |
| 4866 | |
| 4867 | return Status( |
| 4868 | "Unknown error happened during sending the load address packet"); |
| 4869 | } |
| 4870 | |
| 4871 | void ProcessGDBRemote::ModulesDidLoad(ModuleList &module_list) { |
| 4872 | // We must call the lldb_private::Process::ModulesDidLoad () first before we |
| 4873 | // do anything |
| 4874 | Process::ModulesDidLoad(module_list); |
| 4875 | |
| 4876 | // After loading shared libraries, we can ask our remote GDB server if it |
| 4877 | // needs any symbols. |
| 4878 | m_gdb_comm.ServeSymbolLookups(this); |
| 4879 | } |
| 4880 | |
| 4881 | void ProcessGDBRemote::HandleAsyncStdout(llvm::StringRef out) { |
| 4882 | AppendSTDOUT(out.data(), out.size()); |
| 4883 | } |
| 4884 | |
| 4885 | static const char *end_delimiter = "--end--;"; |
| 4886 | static const int end_delimiter_len = 8; |
| 4887 | |
| 4888 | void ProcessGDBRemote::HandleAsyncMisc(llvm::StringRef data) { |
| 4889 | std::string input = data.str(); // '1' to move beyond 'A' |
| 4890 | if (m_partial_profile_data.length() > 0) { |
| 4891 | m_partial_profile_data.append(input); |
| 4892 | input = m_partial_profile_data; |
| 4893 | m_partial_profile_data.clear(); |
| 4894 | } |
| 4895 | |
| 4896 | size_t found, pos = 0, len = input.length(); |
| 4897 | while ((found = input.find(end_delimiter, pos)) != std::string::npos) { |
| 4898 | StringExtractorGDBRemote profileDataExtractor( |
| 4899 | input.substr(pos, found).c_str()); |
| 4900 | std::string profile_data = |
| 4901 | HarmonizeThreadIdsForProfileData(profileDataExtractor); |
| 4902 | BroadcastAsyncProfileData(profile_data); |
| 4903 | |
| 4904 | pos = found + end_delimiter_len; |
| 4905 | } |
| 4906 | |
| 4907 | if (pos < len) { |
| 4908 | // Last incomplete chunk. |
| 4909 | m_partial_profile_data = input.substr(pos); |
| 4910 | } |
| 4911 | } |
| 4912 | |
| 4913 | std::string ProcessGDBRemote::HarmonizeThreadIdsForProfileData( |
| 4914 | StringExtractorGDBRemote &profileDataExtractor) { |
| 4915 | std::map<uint64_t, uint32_t> new_thread_id_to_used_usec_map; |
| 4916 | std::string output; |
| 4917 | llvm::raw_string_ostream output_stream(output); |
| 4918 | llvm::StringRef name, value; |
| 4919 | |
| 4920 | // Going to assuming thread_used_usec comes first, else bail out. |
| 4921 | while (profileDataExtractor.GetNameColonValue(name, value)) { |
| 4922 | if (name.compare("thread_used_id") == 0) { |
| 4923 | StringExtractor threadIDHexExtractor(value); |
| 4924 | uint64_t thread_id = threadIDHexExtractor.GetHexMaxU64(false, 0); |
| 4925 | |
| 4926 | bool has_used_usec = false; |
| 4927 | uint32_t curr_used_usec = 0; |
| 4928 | llvm::StringRef usec_name, usec_value; |
| 4929 | uint32_t input_file_pos = profileDataExtractor.GetFilePos(); |
| 4930 | if (profileDataExtractor.GetNameColonValue(usec_name, usec_value)) { |
| 4931 | if (usec_name.equals("thread_used_usec")) { |
| 4932 | has_used_usec = true; |
| 4933 | usec_value.getAsInteger(0, curr_used_usec); |
| 4934 | } else { |
| 4935 | // We didn't find what we want, it is probably an older version. Bail |
| 4936 | // out. |
| 4937 | profileDataExtractor.SetFilePos(input_file_pos); |
| 4938 | } |
| 4939 | } |
| 4940 | |
| 4941 | if (has_used_usec) { |
| 4942 | uint32_t prev_used_usec = 0; |
| 4943 | std::map<uint64_t, uint32_t>::iterator iterator = |
| 4944 | m_thread_id_to_used_usec_map.find(thread_id); |
| 4945 | if (iterator != m_thread_id_to_used_usec_map.end()) { |
| 4946 | prev_used_usec = m_thread_id_to_used_usec_map[thread_id]; |
| 4947 | } |
| 4948 | |
| 4949 | uint32_t real_used_usec = curr_used_usec - prev_used_usec; |
| 4950 | // A good first time record is one that runs for at least 0.25 sec |
| 4951 | bool good_first_time = |
| 4952 | (prev_used_usec == 0) && (real_used_usec > 250000); |
| 4953 | bool good_subsequent_time = |
| 4954 | (prev_used_usec > 0) && |
| 4955 | ((real_used_usec > 0) || (HasAssignedIndexIDToThread(thread_id))); |
| 4956 | |
| 4957 | if (good_first_time || good_subsequent_time) { |
| 4958 | // We try to avoid doing too many index id reservation, resulting in |
| 4959 | // fast increase of index ids. |
| 4960 | |
| 4961 | output_stream << name << ":"; |
| 4962 | int32_t index_id = AssignIndexIDToThread(thread_id); |
| 4963 | output_stream << index_id << ";"; |
| 4964 | |
| 4965 | output_stream << usec_name << ":" << usec_value << ";"; |
| 4966 | } else { |
| 4967 | // Skip past 'thread_used_name'. |
| 4968 | llvm::StringRef local_name, local_value; |
| 4969 | profileDataExtractor.GetNameColonValue(local_name, local_value); |
| 4970 | } |
| 4971 | |
| 4972 | // Store current time as previous time so that they can be compared |
| 4973 | // later. |
| 4974 | new_thread_id_to_used_usec_map[thread_id] = curr_used_usec; |
| 4975 | } else { |
| 4976 | // Bail out and use old string. |
| 4977 | output_stream << name << ":" << value << ";"; |
| 4978 | } |
| 4979 | } else { |
| 4980 | output_stream << name << ":" << value << ";"; |
| 4981 | } |
| 4982 | } |
| 4983 | output_stream << end_delimiter; |
| 4984 | m_thread_id_to_used_usec_map = new_thread_id_to_used_usec_map; |
| 4985 | |
| 4986 | return output_stream.str(); |
| 4987 | } |
| 4988 | |
| 4989 | void ProcessGDBRemote::HandleStopReply() { |
| 4990 | if (GetStopID() != 0) |
| 4991 | return; |
| 4992 | |
| 4993 | if (GetID() == LLDB_INVALID_PROCESS_ID0) { |
| 4994 | lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID(); |
| 4995 | if (pid != LLDB_INVALID_PROCESS_ID0) |
| 4996 | SetID(pid); |
| 4997 | } |
| 4998 | BuildDynamicRegisterInfo(true); |
| 4999 | } |
| 5000 | |
| 5001 | static const char *const s_async_json_packet_prefix = "JSON-async:"; |
| 5002 | |
| 5003 | static StructuredData::ObjectSP |
| 5004 | ParseStructuredDataPacket(llvm::StringRef packet) { |
| 5005 | Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS(1u << 1))); |
| 5006 | |
| 5007 | if (!packet.consume_front(s_async_json_packet_prefix)) { |
| 5008 | if (log) { |
| 5009 | log->Printf( |
| 5010 | "GDBRemoteCommunicationClientBase::%s() received $J packet " |
| 5011 | "but was not a StructuredData packet: packet starts with " |
| 5012 | "%s", |
| 5013 | __FUNCTION__, |
| 5014 | packet.slice(0, strlen(s_async_json_packet_prefix)).str().c_str()); |
| 5015 | } |
| 5016 | return StructuredData::ObjectSP(); |
| 5017 | } |
| 5018 | |
| 5019 | // This is an asynchronous JSON packet, destined for a StructuredDataPlugin. |
| 5020 | StructuredData::ObjectSP json_sp = StructuredData::ParseJSON(packet); |
| 5021 | if (log) { |
| 5022 | if (json_sp) { |
| 5023 | StreamString json_str; |
| 5024 | json_sp->Dump(json_str); |
| 5025 | json_str.Flush(); |
| 5026 | log->Printf("ProcessGDBRemote::%s() " |
| 5027 | "received Async StructuredData packet: %s", |
| 5028 | __FUNCTION__, json_str.GetData()); |
| 5029 | } else { |
| 5030 | log->Printf("ProcessGDBRemote::%s" |
| 5031 | "() received StructuredData packet:" |
| 5032 | " parse failure", |
| 5033 | __FUNCTION__); |
| 5034 | } |
| 5035 | } |
| 5036 | return json_sp; |
| 5037 | } |
| 5038 | |
| 5039 | void ProcessGDBRemote::HandleAsyncStructuredDataPacket(llvm::StringRef data) { |
| 5040 | auto structured_data_sp = ParseStructuredDataPacket(data); |
| 5041 | if (structured_data_sp) |
| 5042 | RouteAsyncStructuredData(structured_data_sp); |
| 5043 | } |
| 5044 | |
| 5045 | class CommandObjectProcessGDBRemoteSpeedTest : public CommandObjectParsed { |
| 5046 | public: |
| 5047 | CommandObjectProcessGDBRemoteSpeedTest(CommandInterpreter &interpreter) |
| 5048 | : CommandObjectParsed(interpreter, "process plugin packet speed-test", |
| 5049 | "Tests packet speeds of various sizes to determine " |
| 5050 | "the performance characteristics of the GDB remote " |
| 5051 | "connection. ", |
| 5052 | NULL__null), |
| 5053 | m_option_group(), |
| 5054 | m_num_packets(LLDB_OPT_SET_1(1U << 0), false, "count", 'c', 0, eArgTypeCount, |
| 5055 | "The number of packets to send of each varying size " |
| 5056 | "(default is 1000).", |
| 5057 | 1000), |
| 5058 | m_max_send(LLDB_OPT_SET_1(1U << 0), false, "max-send", 's', 0, eArgTypeCount, |
| 5059 | "The maximum number of bytes to send in a packet. Sizes " |
| 5060 | "increase in powers of 2 while the size is less than or " |
| 5061 | "equal to this option value. (default 1024).", |
| 5062 | 1024), |
| 5063 | m_max_recv(LLDB_OPT_SET_1(1U << 0), false, "max-receive", 'r', 0, eArgTypeCount, |
| 5064 | "The maximum number of bytes to receive in a packet. Sizes " |
| 5065 | "increase in powers of 2 while the size is less than or " |
| 5066 | "equal to this option value. (default 1024).", |
| 5067 | 1024), |
| 5068 | m_json(LLDB_OPT_SET_1(1U << 0), false, "json", 'j', |
| 5069 | "Print the output as JSON data for easy parsing.", false, true) { |
| 5070 | m_option_group.Append(&m_num_packets, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
| 5071 | m_option_group.Append(&m_max_send, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
| 5072 | m_option_group.Append(&m_max_recv, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
| 5073 | m_option_group.Append(&m_json, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
| 5074 | m_option_group.Finalize(); |
| 5075 | } |
| 5076 | |
| 5077 | ~CommandObjectProcessGDBRemoteSpeedTest() {} |
| 5078 | |
| 5079 | Options *GetOptions() override { return &m_option_group; } |
| 5080 | |
| 5081 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
| 5082 | const size_t argc = command.GetArgumentCount(); |
| 5083 | if (argc == 0) { |
| 5084 | ProcessGDBRemote *process = |
| 5085 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext() |
| 5086 | .GetProcessPtr(); |
| 5087 | if (process) { |
| 5088 | StreamSP output_stream_sp( |
| 5089 | m_interpreter.GetDebugger().GetAsyncOutputStream()); |
| 5090 | result.SetImmediateOutputStream(output_stream_sp); |
| 5091 | |
| 5092 | const uint32_t num_packets = |
| 5093 | (uint32_t)m_num_packets.GetOptionValue().GetCurrentValue(); |
| 5094 | const uint64_t max_send = m_max_send.GetOptionValue().GetCurrentValue(); |
| 5095 | const uint64_t max_recv = m_max_recv.GetOptionValue().GetCurrentValue(); |
| 5096 | const bool json = m_json.GetOptionValue().GetCurrentValue(); |
| 5097 | const uint64_t k_recv_amount = |
| 5098 | 4 * 1024 * 1024; // Receive amount in bytes |
| 5099 | process->GetGDBRemote().TestPacketSpeed( |
| 5100 | num_packets, max_send, max_recv, k_recv_amount, json, |
| 5101 | output_stream_sp ? *output_stream_sp : result.GetOutputStream()); |
| 5102 | result.SetStatus(eReturnStatusSuccessFinishResult); |
| 5103 | return true; |
| 5104 | } |
| 5105 | } else { |
| 5106 | result.AppendErrorWithFormat("'%s' takes no arguments", |
| 5107 | m_cmd_name.c_str()); |
| 5108 | } |
| 5109 | result.SetStatus(eReturnStatusFailed); |
| 5110 | return false; |
| 5111 | } |
| 5112 | |
| 5113 | protected: |
| 5114 | OptionGroupOptions m_option_group; |
| 5115 | OptionGroupUInt64 m_num_packets; |
| 5116 | OptionGroupUInt64 m_max_send; |
| 5117 | OptionGroupUInt64 m_max_recv; |
| 5118 | OptionGroupBoolean m_json; |
| 5119 | }; |
| 5120 | |
| 5121 | class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed { |
| 5122 | private: |
| 5123 | public: |
| 5124 | CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) |
| 5125 | : CommandObjectParsed(interpreter, "process plugin packet history", |
| 5126 | "Dumps the packet history buffer. ", NULL__null) {} |
| 5127 | |
| 5128 | ~CommandObjectProcessGDBRemotePacketHistory() {} |
| 5129 | |
| 5130 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
| 5131 | const size_t argc = command.GetArgumentCount(); |
| 5132 | if (argc == 0) { |
| 5133 | ProcessGDBRemote *process = |
| 5134 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext() |
| 5135 | .GetProcessPtr(); |
| 5136 | if (process) { |
| 5137 | process->GetGDBRemote().DumpHistory(result.GetOutputStream()); |
| 5138 | result.SetStatus(eReturnStatusSuccessFinishResult); |
| 5139 | return true; |
| 5140 | } |
| 5141 | } else { |
| 5142 | result.AppendErrorWithFormat("'%s' takes no arguments", |
| 5143 | m_cmd_name.c_str()); |
| 5144 | } |
| 5145 | result.SetStatus(eReturnStatusFailed); |
| 5146 | return false; |
| 5147 | } |
| 5148 | }; |
| 5149 | |
| 5150 | class CommandObjectProcessGDBRemotePacketXferSize : public CommandObjectParsed { |
| 5151 | private: |
| 5152 | public: |
| 5153 | CommandObjectProcessGDBRemotePacketXferSize(CommandInterpreter &interpreter) |
| 5154 | : CommandObjectParsed( |
| 5155 | interpreter, "process plugin packet xfer-size", |
| 5156 | "Maximum size that lldb will try to read/write one one chunk.", |
| 5157 | NULL__null) {} |
| 5158 | |
| 5159 | ~CommandObjectProcessGDBRemotePacketXferSize() {} |
| 5160 | |
| 5161 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
| 5162 | const size_t argc = command.GetArgumentCount(); |
| 5163 | if (argc == 0) { |
| 5164 | result.AppendErrorWithFormat("'%s' takes an argument to specify the max " |
| 5165 | "amount to be transferred when " |
| 5166 | "reading/writing", |
| 5167 | m_cmd_name.c_str()); |
| 5168 | result.SetStatus(eReturnStatusFailed); |
| 5169 | return false; |
| 5170 | } |
| 5171 | |
| 5172 | ProcessGDBRemote *process = |
| 5173 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); |
| 5174 | if (process) { |
| 5175 | const char *packet_size = command.GetArgumentAtIndex(0); |
| 5176 | errno(*__errno_location ()) = 0; |
| 5177 | uint64_t user_specified_max = strtoul(packet_size, NULL__null, 10); |
| 5178 | if (errno(*__errno_location ()) == 0 && user_specified_max != 0) { |
| 5179 | process->SetUserSpecifiedMaxMemoryTransferSize(user_specified_max); |
| 5180 | result.SetStatus(eReturnStatusSuccessFinishResult); |
| 5181 | return true; |
| 5182 | } |
| 5183 | } |
| 5184 | result.SetStatus(eReturnStatusFailed); |
| 5185 | return false; |
| 5186 | } |
| 5187 | }; |
| 5188 | |
| 5189 | class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed { |
| 5190 | private: |
| 5191 | public: |
| 5192 | CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) |
| 5193 | : CommandObjectParsed(interpreter, "process plugin packet send", |
| 5194 | "Send a custom packet through the GDB remote " |
| 5195 | "protocol and print the answer. " |
| 5196 | "The packet header and footer will automatically " |
| 5197 | "be added to the packet prior to sending and " |
| 5198 | "stripped from the result.", |
| 5199 | NULL__null) {} |
| 5200 | |
| 5201 | ~CommandObjectProcessGDBRemotePacketSend() {} |
| 5202 | |
| 5203 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
| 5204 | const size_t argc = command.GetArgumentCount(); |
| 5205 | if (argc == 0) { |
| 5206 | result.AppendErrorWithFormat( |
| 5207 | "'%s' takes a one or more packet content arguments", |
| 5208 | m_cmd_name.c_str()); |
| 5209 | result.SetStatus(eReturnStatusFailed); |
| 5210 | return false; |
| 5211 | } |
| 5212 | |
| 5213 | ProcessGDBRemote *process = |
| 5214 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); |
| 5215 | if (process) { |
| 5216 | for (size_t i = 0; i < argc; ++i) { |
| 5217 | const char *packet_cstr = command.GetArgumentAtIndex(0); |
| 5218 | bool send_async = true; |
| 5219 | StringExtractorGDBRemote response; |
| 5220 | process->GetGDBRemote().SendPacketAndWaitForResponse( |
| 5221 | packet_cstr, response, send_async); |
| 5222 | result.SetStatus(eReturnStatusSuccessFinishResult); |
| 5223 | Stream &output_strm = result.GetOutputStream(); |
| 5224 | output_strm.Printf(" packet: %s\n", packet_cstr); |
| 5225 | std::string &response_str = response.GetStringRef(); |
| 5226 | |
| 5227 | if (strstr(packet_cstr, "qGetProfileData") != NULL__null) { |
| 5228 | response_str = process->HarmonizeThreadIdsForProfileData(response); |
| 5229 | } |
| 5230 | |
| 5231 | if (response_str.empty()) |
| 5232 | output_strm.PutCString("response: \nerror: UNIMPLEMENTED\n"); |
| 5233 | else |
| 5234 | output_strm.Printf("response: %s\n", response.GetStringRef().c_str()); |
| 5235 | } |
| 5236 | } |
| 5237 | return true; |
| 5238 | } |
| 5239 | }; |
| 5240 | |
| 5241 | class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw { |
| 5242 | private: |
| 5243 | public: |
| 5244 | CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) |
| 5245 | : CommandObjectRaw(interpreter, "process plugin packet monitor", |
| 5246 | "Send a qRcmd packet through the GDB remote protocol " |
| 5247 | "and print the response." |
| 5248 | "The argument passed to this command will be hex " |
| 5249 | "encoded into a valid 'qRcmd' packet, sent and the " |
| 5250 | "response will be printed.") {} |
| 5251 | |
| 5252 | ~CommandObjectProcessGDBRemotePacketMonitor() {} |
| 5253 | |
| 5254 | bool DoExecute(llvm::StringRef command, |
| 5255 | CommandReturnObject &result) override { |
| 5256 | if (command.empty()) { |
| 5257 | result.AppendErrorWithFormat("'%s' takes a command string argument", |
| 5258 | m_cmd_name.c_str()); |
| 5259 | result.SetStatus(eReturnStatusFailed); |
| 5260 | return false; |
| 5261 | } |
| 5262 | |
| 5263 | ProcessGDBRemote *process = |
| 5264 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); |
| 5265 | if (process) { |
| 5266 | StreamString packet; |
| 5267 | packet.PutCString("qRcmd,"); |
| 5268 | packet.PutBytesAsRawHex8(command.data(), command.size()); |
| 5269 | |
| 5270 | bool send_async = true; |
| 5271 | StringExtractorGDBRemote response; |
| 5272 | Stream &output_strm = result.GetOutputStream(); |
| 5273 | process->GetGDBRemote().SendPacketAndReceiveResponseWithOutputSupport( |
| 5274 | packet.GetString(), response, send_async, |
| 5275 | [&output_strm](llvm::StringRef output) { output_strm << output; }); |
| 5276 | result.SetStatus(eReturnStatusSuccessFinishResult); |
| 5277 | output_strm.Printf(" packet: %s\n", packet.GetData()); |
| 5278 | const std::string &response_str = response.GetStringRef(); |
| 5279 | |
| 5280 | if (response_str.empty()) |
| 5281 | output_strm.PutCString("response: \nerror: UNIMPLEMENTED\n"); |
| 5282 | else |
| 5283 | output_strm.Printf("response: %s\n", response.GetStringRef().c_str()); |
| 5284 | } |
| 5285 | return true; |
| 5286 | } |
| 5287 | }; |
| 5288 | |
| 5289 | class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword { |
| 5290 | private: |
| 5291 | public: |
| 5292 | CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) |
| 5293 | : CommandObjectMultiword(interpreter, "process plugin packet", |
| 5294 | "Commands that deal with GDB remote packets.", |
| 5295 | NULL__null) { |
| 5296 | LoadSubCommand( |
| 5297 | "history", |
| 5298 | CommandObjectSP( |
| 5299 | new CommandObjectProcessGDBRemotePacketHistory(interpreter))); |
| 5300 | LoadSubCommand( |
| 5301 | "send", CommandObjectSP( |
| 5302 | new CommandObjectProcessGDBRemotePacketSend(interpreter))); |
| 5303 | LoadSubCommand( |
| 5304 | "monitor", |
| 5305 | CommandObjectSP( |
| 5306 | new CommandObjectProcessGDBRemotePacketMonitor(interpreter))); |
| 5307 | LoadSubCommand( |
| 5308 | "xfer-size", |
| 5309 | CommandObjectSP( |
| 5310 | new CommandObjectProcessGDBRemotePacketXferSize(interpreter))); |
| 5311 | LoadSubCommand("speed-test", |
| 5312 | CommandObjectSP(new CommandObjectProcessGDBRemoteSpeedTest( |
| 5313 | interpreter))); |
| 5314 | } |
| 5315 | |
| 5316 | ~CommandObjectProcessGDBRemotePacket() {} |
| 5317 | }; |
| 5318 | |
| 5319 | class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword { |
| 5320 | public: |
| 5321 | CommandObjectMultiwordProcessGDBRemote(CommandInterpreter &interpreter) |
| 5322 | : CommandObjectMultiword( |
| 5323 | interpreter, "process plugin", |
| 5324 | "Commands for operating on a ProcessGDBRemote process.", |
| 5325 | "process plugin <subcommand> [<subcommand-options>]") { |
| 5326 | LoadSubCommand( |
| 5327 | "packet", |
| 5328 | CommandObjectSP(new CommandObjectProcessGDBRemotePacket(interpreter))); |
| 5329 | } |
| 5330 | |
| 5331 | ~CommandObjectMultiwordProcessGDBRemote() {} |
| 5332 | }; |
| 5333 | |
| 5334 | CommandObject *ProcessGDBRemote::GetPluginCommandObject() { |
| 5335 | if (!m_command_sp) |
| 5336 | m_command_sp.reset(new CommandObjectMultiwordProcessGDBRemote( |
| 5337 | GetTarget().GetDebugger().GetCommandInterpreter())); |
| 5338 | return m_command_sp.get(); |
| 5339 | } |