1 //===-- Platform.cpp ------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include <algorithm> 10 #include <csignal> 11 #include <fstream> 12 #include <memory> 13 #include <vector> 14 15 #include "lldb/Breakpoint/BreakpointIDList.h" 16 #include "lldb/Breakpoint/BreakpointLocation.h" 17 #include "lldb/Core/Debugger.h" 18 #include "lldb/Core/Module.h" 19 #include "lldb/Core/ModuleSpec.h" 20 #include "lldb/Core/PluginManager.h" 21 #include "lldb/Core/StreamFile.h" 22 #include "lldb/Host/FileSystem.h" 23 #include "lldb/Host/Host.h" 24 #include "lldb/Host/HostInfo.h" 25 #include "lldb/Host/OptionParser.h" 26 #include "lldb/Interpreter/OptionValueFileSpec.h" 27 #include "lldb/Interpreter/OptionValueProperties.h" 28 #include "lldb/Interpreter/Property.h" 29 #include "lldb/Symbol/ObjectFile.h" 30 #include "lldb/Target/ModuleCache.h" 31 #include "lldb/Target/Platform.h" 32 #include "lldb/Target/Process.h" 33 #include "lldb/Target/Target.h" 34 #include "lldb/Target/UnixSignals.h" 35 #include "lldb/Utility/DataBufferHeap.h" 36 #include "lldb/Utility/FileSpec.h" 37 #include "lldb/Utility/Log.h" 38 #include "lldb/Utility/Status.h" 39 #include "lldb/Utility/StructuredData.h" 40 #include "llvm/Support/FileSystem.h" 41 #include "llvm/Support/Path.h" 42 43 // Define these constants from POSIX mman.h rather than include the file so 44 // that they will be correct even when compiled on Linux. 45 #define MAP_PRIVATE 2 46 #define MAP_ANON 0x1000 47 48 using namespace lldb; 49 using namespace lldb_private; 50 51 static uint32_t g_initialize_count = 0; 52 53 // Use a singleton function for g_local_platform_sp to avoid init constructors 54 // since LLDB is often part of a shared library 55 static PlatformSP &GetHostPlatformSP() { 56 static PlatformSP g_platform_sp; 57 return g_platform_sp; 58 } 59 60 const char *Platform::GetHostPlatformName() { return "host"; } 61 62 namespace { 63 64 #define LLDB_PROPERTIES_platform 65 #include "TargetProperties.inc" 66 67 enum { 68 #define LLDB_PROPERTIES_platform 69 #include "TargetPropertiesEnum.inc" 70 }; 71 72 } // namespace 73 74 ConstString PlatformProperties::GetSettingName() { 75 static ConstString g_setting_name("platform"); 76 return g_setting_name; 77 } 78 79 PlatformProperties::PlatformProperties() { 80 m_collection_sp = std::make_shared<OptionValueProperties>(GetSettingName()); 81 m_collection_sp->Initialize(g_platform_properties); 82 83 auto module_cache_dir = GetModuleCacheDirectory(); 84 if (module_cache_dir) 85 return; 86 87 llvm::SmallString<64> user_home_dir; 88 if (!FileSystem::Instance().GetHomeDirectory(user_home_dir)) 89 return; 90 91 module_cache_dir = FileSpec(user_home_dir.c_str()); 92 module_cache_dir.AppendPathComponent(".lldb"); 93 module_cache_dir.AppendPathComponent("module_cache"); 94 SetDefaultModuleCacheDirectory(module_cache_dir); 95 SetModuleCacheDirectory(module_cache_dir); 96 } 97 98 bool PlatformProperties::GetUseModuleCache() const { 99 const auto idx = ePropertyUseModuleCache; 100 return m_collection_sp->GetPropertyAtIndexAsBoolean( 101 nullptr, idx, g_platform_properties[idx].default_uint_value != 0); 102 } 103 104 bool PlatformProperties::SetUseModuleCache(bool use_module_cache) { 105 return m_collection_sp->SetPropertyAtIndexAsBoolean( 106 nullptr, ePropertyUseModuleCache, use_module_cache); 107 } 108 109 FileSpec PlatformProperties::GetModuleCacheDirectory() const { 110 return m_collection_sp->GetPropertyAtIndexAsFileSpec( 111 nullptr, ePropertyModuleCacheDirectory); 112 } 113 114 bool PlatformProperties::SetModuleCacheDirectory(const FileSpec &dir_spec) { 115 return m_collection_sp->SetPropertyAtIndexAsFileSpec( 116 nullptr, ePropertyModuleCacheDirectory, dir_spec); 117 } 118 119 void PlatformProperties::SetDefaultModuleCacheDirectory( 120 const FileSpec &dir_spec) { 121 auto f_spec_opt = m_collection_sp->GetPropertyAtIndexAsOptionValueFileSpec( 122 nullptr, false, ePropertyModuleCacheDirectory); 123 assert(f_spec_opt); 124 f_spec_opt->SetDefaultValue(dir_spec); 125 } 126 127 /// Get the native host platform plug-in. 128 /// 129 /// There should only be one of these for each host that LLDB runs 130 /// upon that should be statically compiled in and registered using 131 /// preprocessor macros or other similar build mechanisms. 132 /// 133 /// This platform will be used as the default platform when launching 134 /// or attaching to processes unless another platform is specified. 135 PlatformSP Platform::GetHostPlatform() { return GetHostPlatformSP(); } 136 137 static std::vector<PlatformSP> &GetPlatformList() { 138 static std::vector<PlatformSP> g_platform_list; 139 return g_platform_list; 140 } 141 142 static std::recursive_mutex &GetPlatformListMutex() { 143 static std::recursive_mutex g_mutex; 144 return g_mutex; 145 } 146 147 void Platform::Initialize() { g_initialize_count++; } 148 149 void Platform::Terminate() { 150 if (g_initialize_count > 0) { 151 if (--g_initialize_count == 0) { 152 std::lock_guard<std::recursive_mutex> guard(GetPlatformListMutex()); 153 GetPlatformList().clear(); 154 } 155 } 156 } 157 158 const PlatformPropertiesSP &Platform::GetGlobalPlatformProperties() { 159 static const auto g_settings_sp(std::make_shared<PlatformProperties>()); 160 return g_settings_sp; 161 } 162 163 void Platform::SetHostPlatform(const lldb::PlatformSP &platform_sp) { 164 // The native platform should use its static void Platform::Initialize() 165 // function to register itself as the native platform. 166 GetHostPlatformSP() = platform_sp; 167 168 if (platform_sp) { 169 std::lock_guard<std::recursive_mutex> guard(GetPlatformListMutex()); 170 GetPlatformList().push_back(platform_sp); 171 } 172 } 173 174 Status Platform::GetFileWithUUID(const FileSpec &platform_file, 175 const UUID *uuid_ptr, FileSpec &local_file) { 176 // Default to the local case 177 local_file = platform_file; 178 return Status(); 179 } 180 181 FileSpecList 182 Platform::LocateExecutableScriptingResources(Target *target, Module &module, 183 Stream *feedback_stream) { 184 return FileSpecList(); 185 } 186 187 // PlatformSP 188 // Platform::FindPlugin (Process *process, ConstString plugin_name) 189 //{ 190 // PlatformCreateInstance create_callback = nullptr; 191 // if (plugin_name) 192 // { 193 // create_callback = 194 // PluginManager::GetPlatformCreateCallbackForPluginName (plugin_name); 195 // if (create_callback) 196 // { 197 // ArchSpec arch; 198 // if (process) 199 // { 200 // arch = process->GetTarget().GetArchitecture(); 201 // } 202 // PlatformSP platform_sp(create_callback(process, &arch)); 203 // if (platform_sp) 204 // return platform_sp; 205 // } 206 // } 207 // else 208 // { 209 // for (uint32_t idx = 0; (create_callback = 210 // PluginManager::GetPlatformCreateCallbackAtIndex(idx)) != nullptr; 211 // ++idx) 212 // { 213 // PlatformSP platform_sp(create_callback(process, nullptr)); 214 // if (platform_sp) 215 // return platform_sp; 216 // } 217 // } 218 // return PlatformSP(); 219 //} 220 221 Status Platform::GetSharedModule( 222 const ModuleSpec &module_spec, Process *process, ModuleSP &module_sp, 223 const FileSpecList *module_search_paths_ptr, 224 llvm::SmallVectorImpl<lldb::ModuleSP> *old_modules, bool *did_create_ptr) { 225 if (IsHost()) 226 return ModuleList::GetSharedModule(module_spec, module_sp, 227 module_search_paths_ptr, old_modules, 228 did_create_ptr, false); 229 230 // Module resolver lambda. 231 auto resolver = [&](const ModuleSpec &spec) { 232 Status error(eErrorTypeGeneric); 233 ModuleSpec resolved_spec; 234 // Check if we have sysroot set. 235 if (m_sdk_sysroot) { 236 // Prepend sysroot to module spec. 237 resolved_spec = spec; 238 resolved_spec.GetFileSpec().PrependPathComponent( 239 m_sdk_sysroot.GetStringRef()); 240 // Try to get shared module with resolved spec. 241 error = ModuleList::GetSharedModule(resolved_spec, module_sp, 242 module_search_paths_ptr, old_modules, 243 did_create_ptr, false); 244 } 245 // If we don't have sysroot or it didn't work then 246 // try original module spec. 247 if (!error.Success()) { 248 resolved_spec = spec; 249 error = ModuleList::GetSharedModule(resolved_spec, module_sp, 250 module_search_paths_ptr, old_modules, 251 did_create_ptr, false); 252 } 253 if (error.Success() && module_sp) 254 module_sp->SetPlatformFileSpec(resolved_spec.GetFileSpec()); 255 return error; 256 }; 257 258 return GetRemoteSharedModule(module_spec, process, module_sp, resolver, 259 did_create_ptr); 260 } 261 262 bool Platform::GetModuleSpec(const FileSpec &module_file_spec, 263 const ArchSpec &arch, ModuleSpec &module_spec) { 264 ModuleSpecList module_specs; 265 if (ObjectFile::GetModuleSpecifications(module_file_spec, 0, 0, 266 module_specs) == 0) 267 return false; 268 269 ModuleSpec matched_module_spec; 270 return module_specs.FindMatchingModuleSpec(ModuleSpec(module_file_spec, arch), 271 module_spec); 272 } 273 274 PlatformSP Platform::Find(ConstString name) { 275 if (name) { 276 static ConstString g_host_platform_name("host"); 277 if (name == g_host_platform_name) 278 return GetHostPlatform(); 279 280 std::lock_guard<std::recursive_mutex> guard(GetPlatformListMutex()); 281 for (const auto &platform_sp : GetPlatformList()) { 282 if (platform_sp->GetName() == name) 283 return platform_sp; 284 } 285 } 286 return PlatformSP(); 287 } 288 289 PlatformSP Platform::Create(ConstString name, Status &error) { 290 PlatformCreateInstance create_callback = nullptr; 291 lldb::PlatformSP platform_sp; 292 if (name) { 293 static ConstString g_host_platform_name("host"); 294 if (name == g_host_platform_name) 295 return GetHostPlatform(); 296 297 create_callback = 298 PluginManager::GetPlatformCreateCallbackForPluginName(name); 299 if (create_callback) 300 platform_sp = create_callback(true, nullptr); 301 else 302 error.SetErrorStringWithFormat( 303 "unable to find a plug-in for the platform named \"%s\"", 304 name.GetCString()); 305 } else 306 error.SetErrorString("invalid platform name"); 307 308 if (platform_sp) { 309 std::lock_guard<std::recursive_mutex> guard(GetPlatformListMutex()); 310 GetPlatformList().push_back(platform_sp); 311 } 312 313 return platform_sp; 314 } 315 316 PlatformSP Platform::Create(const ArchSpec &arch, ArchSpec *platform_arch_ptr, 317 Status &error) { 318 lldb::PlatformSP platform_sp; 319 if (arch.IsValid()) { 320 // Scope for locker 321 { 322 // First try exact arch matches across all platforms already created 323 std::lock_guard<std::recursive_mutex> guard(GetPlatformListMutex()); 324 for (const auto &platform_sp : GetPlatformList()) { 325 if (platform_sp->IsCompatibleArchitecture(arch, true, 326 platform_arch_ptr)) 327 return platform_sp; 328 } 329 330 // Next try compatible arch matches across all platforms already created 331 for (const auto &platform_sp : GetPlatformList()) { 332 if (platform_sp->IsCompatibleArchitecture(arch, false, 333 platform_arch_ptr)) 334 return platform_sp; 335 } 336 } 337 338 PlatformCreateInstance create_callback; 339 // First try exact arch matches across all platform plug-ins 340 uint32_t idx; 341 for (idx = 0; (create_callback = 342 PluginManager::GetPlatformCreateCallbackAtIndex(idx)); 343 ++idx) { 344 if (create_callback) { 345 platform_sp = create_callback(false, &arch); 346 if (platform_sp && 347 platform_sp->IsCompatibleArchitecture(arch, true, 348 platform_arch_ptr)) { 349 std::lock_guard<std::recursive_mutex> guard(GetPlatformListMutex()); 350 GetPlatformList().push_back(platform_sp); 351 return platform_sp; 352 } 353 } 354 } 355 // Next try compatible arch matches across all platform plug-ins 356 for (idx = 0; (create_callback = 357 PluginManager::GetPlatformCreateCallbackAtIndex(idx)); 358 ++idx) { 359 if (create_callback) { 360 platform_sp = create_callback(false, &arch); 361 if (platform_sp && 362 platform_sp->IsCompatibleArchitecture(arch, false, 363 platform_arch_ptr)) { 364 std::lock_guard<std::recursive_mutex> guard(GetPlatformListMutex()); 365 GetPlatformList().push_back(platform_sp); 366 return platform_sp; 367 } 368 } 369 } 370 } else 371 error.SetErrorString("invalid platform name"); 372 if (platform_arch_ptr) 373 platform_arch_ptr->Clear(); 374 platform_sp.reset(); 375 return platform_sp; 376 } 377 378 ArchSpec Platform::GetAugmentedArchSpec(Platform *platform, llvm::StringRef triple) { 379 if (platform) 380 return platform->GetAugmentedArchSpec(triple); 381 return HostInfo::GetAugmentedArchSpec(triple); 382 } 383 384 /// Default Constructor 385 Platform::Platform(bool is_host) 386 : m_is_host(is_host), m_os_version_set_while_connected(false), 387 m_system_arch_set_while_connected(false), m_sdk_sysroot(), m_sdk_build(), 388 m_working_dir(), m_remote_url(), m_name(), m_system_arch(), m_mutex(), 389 m_max_uid_name_len(0), m_max_gid_name_len(0), m_supports_rsync(false), 390 m_rsync_opts(), m_rsync_prefix(), m_supports_ssh(false), m_ssh_opts(), 391 m_ignores_remote_hostname(false), m_trap_handlers(), 392 m_calculated_trap_handlers(false), 393 m_module_cache(std::make_unique<ModuleCache>()) { 394 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 395 LLDB_LOGF(log, "%p Platform::Platform()", static_cast<void *>(this)); 396 } 397 398 /// Destructor. 399 /// 400 /// The destructor is virtual since this class is designed to be 401 /// inherited from by the plug-in instance. 402 Platform::~Platform() { 403 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 404 LLDB_LOGF(log, "%p Platform::~Platform()", static_cast<void *>(this)); 405 } 406 407 void Platform::GetStatus(Stream &strm) { 408 std::string s; 409 strm.Printf(" Platform: %s\n", GetPluginName().GetCString()); 410 411 ArchSpec arch(GetSystemArchitecture()); 412 if (arch.IsValid()) { 413 if (!arch.GetTriple().str().empty()) { 414 strm.Printf(" Triple: "); 415 arch.DumpTriple(strm.AsRawOstream()); 416 strm.EOL(); 417 } 418 } 419 420 llvm::VersionTuple os_version = GetOSVersion(); 421 if (!os_version.empty()) { 422 strm.Format("OS Version: {0}", os_version.getAsString()); 423 424 if (GetOSBuildString(s)) 425 strm.Printf(" (%s)", s.c_str()); 426 427 strm.EOL(); 428 } 429 430 if (IsHost()) { 431 strm.Printf(" Hostname: %s\n", GetHostname()); 432 } else { 433 const bool is_connected = IsConnected(); 434 if (is_connected) 435 strm.Printf(" Hostname: %s\n", GetHostname()); 436 strm.Printf(" Connected: %s\n", is_connected ? "yes" : "no"); 437 } 438 439 if (GetWorkingDirectory()) { 440 strm.Printf("WorkingDir: %s\n", GetWorkingDirectory().GetCString()); 441 } 442 if (!IsConnected()) 443 return; 444 445 std::string specific_info(GetPlatformSpecificConnectionInformation()); 446 447 if (!specific_info.empty()) 448 strm.Printf("Platform-specific connection: %s\n", specific_info.c_str()); 449 450 if (GetOSKernelDescription(s)) 451 strm.Printf(" Kernel: %s\n", s.c_str()); 452 } 453 454 llvm::VersionTuple Platform::GetOSVersion(Process *process) { 455 std::lock_guard<std::mutex> guard(m_mutex); 456 457 if (IsHost()) { 458 if (m_os_version.empty()) { 459 // We have a local host platform 460 m_os_version = HostInfo::GetOSVersion(); 461 m_os_version_set_while_connected = !m_os_version.empty(); 462 } 463 } else { 464 // We have a remote platform. We can only fetch the remote 465 // OS version if we are connected, and we don't want to do it 466 // more than once. 467 468 const bool is_connected = IsConnected(); 469 470 bool fetch = false; 471 if (!m_os_version.empty()) { 472 // We have valid OS version info, check to make sure it wasn't manually 473 // set prior to connecting. If it was manually set prior to connecting, 474 // then lets fetch the actual OS version info if we are now connected. 475 if (is_connected && !m_os_version_set_while_connected) 476 fetch = true; 477 } else { 478 // We don't have valid OS version info, fetch it if we are connected 479 fetch = is_connected; 480 } 481 482 if (fetch) 483 m_os_version_set_while_connected = GetRemoteOSVersion(); 484 } 485 486 if (!m_os_version.empty()) 487 return m_os_version; 488 if (process) { 489 // Check with the process in case it can answer the question if a process 490 // was provided 491 return process->GetHostOSVersion(); 492 } 493 return llvm::VersionTuple(); 494 } 495 496 bool Platform::GetOSBuildString(std::string &s) { 497 s.clear(); 498 499 if (IsHost()) 500 return HostInfo::GetOSBuildString(s); 501 return GetRemoteOSBuildString(s); 502 } 503 504 bool Platform::GetOSKernelDescription(std::string &s) { 505 if (IsHost()) 506 return HostInfo::GetOSKernelDescription(s); 507 return GetRemoteOSKernelDescription(s); 508 } 509 510 void Platform::AddClangModuleCompilationOptions( 511 Target *target, std::vector<std::string> &options) { 512 std::vector<std::string> default_compilation_options = { 513 "-x", "c++", "-Xclang", "-nostdsysteminc", "-Xclang", "-nostdsysteminc"}; 514 515 options.insert(options.end(), default_compilation_options.begin(), 516 default_compilation_options.end()); 517 } 518 519 FileSpec Platform::GetWorkingDirectory() { 520 if (IsHost()) { 521 llvm::SmallString<64> cwd; 522 if (llvm::sys::fs::current_path(cwd)) 523 return {}; 524 else { 525 FileSpec file_spec(cwd); 526 FileSystem::Instance().Resolve(file_spec); 527 return file_spec; 528 } 529 } else { 530 if (!m_working_dir) 531 m_working_dir = GetRemoteWorkingDirectory(); 532 return m_working_dir; 533 } 534 } 535 536 struct RecurseCopyBaton { 537 const FileSpec &dst; 538 Platform *platform_ptr; 539 Status error; 540 }; 541 542 static FileSystem::EnumerateDirectoryResult 543 RecurseCopy_Callback(void *baton, llvm::sys::fs::file_type ft, 544 llvm::StringRef path) { 545 RecurseCopyBaton *rc_baton = (RecurseCopyBaton *)baton; 546 FileSpec src(path); 547 namespace fs = llvm::sys::fs; 548 switch (ft) { 549 case fs::file_type::fifo_file: 550 case fs::file_type::socket_file: 551 // we have no way to copy pipes and sockets - ignore them and continue 552 return FileSystem::eEnumerateDirectoryResultNext; 553 break; 554 555 case fs::file_type::directory_file: { 556 // make the new directory and get in there 557 FileSpec dst_dir = rc_baton->dst; 558 if (!dst_dir.GetFilename()) 559 dst_dir.GetFilename() = src.GetLastPathComponent(); 560 Status error = rc_baton->platform_ptr->MakeDirectory( 561 dst_dir, lldb::eFilePermissionsDirectoryDefault); 562 if (error.Fail()) { 563 rc_baton->error.SetErrorStringWithFormat( 564 "unable to setup directory %s on remote end", dst_dir.GetCString()); 565 return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out 566 } 567 568 // now recurse 569 std::string src_dir_path(src.GetPath()); 570 571 // Make a filespec that only fills in the directory of a FileSpec so when 572 // we enumerate we can quickly fill in the filename for dst copies 573 FileSpec recurse_dst; 574 recurse_dst.GetDirectory().SetCString(dst_dir.GetPath().c_str()); 575 RecurseCopyBaton rc_baton2 = {recurse_dst, rc_baton->platform_ptr, 576 Status()}; 577 FileSystem::Instance().EnumerateDirectory(src_dir_path, true, true, true, 578 RecurseCopy_Callback, &rc_baton2); 579 if (rc_baton2.error.Fail()) { 580 rc_baton->error.SetErrorString(rc_baton2.error.AsCString()); 581 return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out 582 } 583 return FileSystem::eEnumerateDirectoryResultNext; 584 } break; 585 586 case fs::file_type::symlink_file: { 587 // copy the file and keep going 588 FileSpec dst_file = rc_baton->dst; 589 if (!dst_file.GetFilename()) 590 dst_file.GetFilename() = src.GetFilename(); 591 592 FileSpec src_resolved; 593 594 rc_baton->error = FileSystem::Instance().Readlink(src, src_resolved); 595 596 if (rc_baton->error.Fail()) 597 return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out 598 599 rc_baton->error = 600 rc_baton->platform_ptr->CreateSymlink(dst_file, src_resolved); 601 602 if (rc_baton->error.Fail()) 603 return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out 604 605 return FileSystem::eEnumerateDirectoryResultNext; 606 } break; 607 608 case fs::file_type::regular_file: { 609 // copy the file and keep going 610 FileSpec dst_file = rc_baton->dst; 611 if (!dst_file.GetFilename()) 612 dst_file.GetFilename() = src.GetFilename(); 613 Status err = rc_baton->platform_ptr->PutFile(src, dst_file); 614 if (err.Fail()) { 615 rc_baton->error.SetErrorString(err.AsCString()); 616 return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out 617 } 618 return FileSystem::eEnumerateDirectoryResultNext; 619 } break; 620 621 default: 622 rc_baton->error.SetErrorStringWithFormat( 623 "invalid file detected during copy: %s", src.GetPath().c_str()); 624 return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out 625 break; 626 } 627 llvm_unreachable("Unhandled file_type!"); 628 } 629 630 Status Platform::Install(const FileSpec &src, const FileSpec &dst) { 631 Status error; 632 633 Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); 634 LLDB_LOGF(log, "Platform::Install (src='%s', dst='%s')", 635 src.GetPath().c_str(), dst.GetPath().c_str()); 636 FileSpec fixed_dst(dst); 637 638 if (!fixed_dst.GetFilename()) 639 fixed_dst.GetFilename() = src.GetFilename(); 640 641 FileSpec working_dir = GetWorkingDirectory(); 642 643 if (dst) { 644 if (dst.GetDirectory()) { 645 const char first_dst_dir_char = dst.GetDirectory().GetCString()[0]; 646 if (first_dst_dir_char == '/' || first_dst_dir_char == '\\') { 647 fixed_dst.GetDirectory() = dst.GetDirectory(); 648 } 649 // If the fixed destination file doesn't have a directory yet, then we 650 // must have a relative path. We will resolve this relative path against 651 // the platform's working directory 652 if (!fixed_dst.GetDirectory()) { 653 FileSpec relative_spec; 654 std::string path; 655 if (working_dir) { 656 relative_spec = working_dir; 657 relative_spec.AppendPathComponent(dst.GetPath()); 658 fixed_dst.GetDirectory() = relative_spec.GetDirectory(); 659 } else { 660 error.SetErrorStringWithFormat( 661 "platform working directory must be valid for relative path '%s'", 662 dst.GetPath().c_str()); 663 return error; 664 } 665 } 666 } else { 667 if (working_dir) { 668 fixed_dst.GetDirectory().SetCString(working_dir.GetCString()); 669 } else { 670 error.SetErrorStringWithFormat( 671 "platform working directory must be valid for relative path '%s'", 672 dst.GetPath().c_str()); 673 return error; 674 } 675 } 676 } else { 677 if (working_dir) { 678 fixed_dst.GetDirectory().SetCString(working_dir.GetCString()); 679 } else { 680 error.SetErrorStringWithFormat("platform working directory must be valid " 681 "when destination directory is empty"); 682 return error; 683 } 684 } 685 686 LLDB_LOGF(log, "Platform::Install (src='%s', dst='%s') fixed_dst='%s'", 687 src.GetPath().c_str(), dst.GetPath().c_str(), 688 fixed_dst.GetPath().c_str()); 689 690 if (GetSupportsRSync()) { 691 error = PutFile(src, dst); 692 } else { 693 namespace fs = llvm::sys::fs; 694 switch (fs::get_file_type(src.GetPath(), false)) { 695 case fs::file_type::directory_file: { 696 llvm::sys::fs::remove(fixed_dst.GetPath()); 697 uint32_t permissions = FileSystem::Instance().GetPermissions(src); 698 if (permissions == 0) 699 permissions = eFilePermissionsDirectoryDefault; 700 error = MakeDirectory(fixed_dst, permissions); 701 if (error.Success()) { 702 // Make a filespec that only fills in the directory of a FileSpec so 703 // when we enumerate we can quickly fill in the filename for dst copies 704 FileSpec recurse_dst; 705 recurse_dst.GetDirectory().SetCString(fixed_dst.GetCString()); 706 std::string src_dir_path(src.GetPath()); 707 RecurseCopyBaton baton = {recurse_dst, this, Status()}; 708 FileSystem::Instance().EnumerateDirectory( 709 src_dir_path, true, true, true, RecurseCopy_Callback, &baton); 710 return baton.error; 711 } 712 } break; 713 714 case fs::file_type::regular_file: 715 llvm::sys::fs::remove(fixed_dst.GetPath()); 716 error = PutFile(src, fixed_dst); 717 break; 718 719 case fs::file_type::symlink_file: { 720 llvm::sys::fs::remove(fixed_dst.GetPath()); 721 FileSpec src_resolved; 722 error = FileSystem::Instance().Readlink(src, src_resolved); 723 if (error.Success()) 724 error = CreateSymlink(dst, src_resolved); 725 } break; 726 case fs::file_type::fifo_file: 727 error.SetErrorString("platform install doesn't handle pipes"); 728 break; 729 case fs::file_type::socket_file: 730 error.SetErrorString("platform install doesn't handle sockets"); 731 break; 732 default: 733 error.SetErrorString( 734 "platform install doesn't handle non file or directory items"); 735 break; 736 } 737 } 738 return error; 739 } 740 741 bool Platform::SetWorkingDirectory(const FileSpec &file_spec) { 742 if (IsHost()) { 743 Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); 744 LLDB_LOG(log, "{0}", file_spec); 745 if (std::error_code ec = llvm::sys::fs::set_current_path(file_spec.GetPath())) { 746 LLDB_LOG(log, "error: {0}", ec.message()); 747 return false; 748 } 749 return true; 750 } else { 751 m_working_dir.Clear(); 752 return SetRemoteWorkingDirectory(file_spec); 753 } 754 } 755 756 Status Platform::MakeDirectory(const FileSpec &file_spec, 757 uint32_t permissions) { 758 if (IsHost()) 759 return llvm::sys::fs::create_directory(file_spec.GetPath(), permissions); 760 else { 761 Status error; 762 error.SetErrorStringWithFormat("remote platform %s doesn't support %s", 763 GetPluginName().GetCString(), 764 LLVM_PRETTY_FUNCTION); 765 return error; 766 } 767 } 768 769 Status Platform::GetFilePermissions(const FileSpec &file_spec, 770 uint32_t &file_permissions) { 771 if (IsHost()) { 772 auto Value = llvm::sys::fs::getPermissions(file_spec.GetPath()); 773 if (Value) 774 file_permissions = Value.get(); 775 return Status(Value.getError()); 776 } else { 777 Status error; 778 error.SetErrorStringWithFormat("remote platform %s doesn't support %s", 779 GetPluginName().GetCString(), 780 LLVM_PRETTY_FUNCTION); 781 return error; 782 } 783 } 784 785 Status Platform::SetFilePermissions(const FileSpec &file_spec, 786 uint32_t file_permissions) { 787 if (IsHost()) { 788 auto Perms = static_cast<llvm::sys::fs::perms>(file_permissions); 789 return llvm::sys::fs::setPermissions(file_spec.GetPath(), Perms); 790 } else { 791 Status error; 792 error.SetErrorStringWithFormat("remote platform %s doesn't support %s", 793 GetPluginName().GetCString(), 794 LLVM_PRETTY_FUNCTION); 795 return error; 796 } 797 } 798 799 ConstString Platform::GetName() { return GetPluginName(); } 800 801 const char *Platform::GetHostname() { 802 if (IsHost()) 803 return "127.0.0.1"; 804 805 if (m_name.empty()) 806 return nullptr; 807 return m_name.c_str(); 808 } 809 810 ConstString Platform::GetFullNameForDylib(ConstString basename) { 811 return basename; 812 } 813 814 bool Platform::SetRemoteWorkingDirectory(const FileSpec &working_dir) { 815 Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); 816 LLDB_LOGF(log, "Platform::SetRemoteWorkingDirectory('%s')", 817 working_dir.GetCString()); 818 m_working_dir = working_dir; 819 return true; 820 } 821 822 bool Platform::SetOSVersion(llvm::VersionTuple version) { 823 if (IsHost()) { 824 // We don't need anyone setting the OS version for the host platform, we 825 // should be able to figure it out by calling HostInfo::GetOSVersion(...). 826 return false; 827 } else { 828 // We have a remote platform, allow setting the target OS version if we 829 // aren't connected, since if we are connected, we should be able to 830 // request the remote OS version from the connected platform. 831 if (IsConnected()) 832 return false; 833 else { 834 // We aren't connected and we might want to set the OS version ahead of 835 // time before we connect so we can peruse files and use a local SDK or 836 // PDK cache of support files to disassemble or do other things. 837 m_os_version = version; 838 return true; 839 } 840 } 841 return false; 842 } 843 844 Status 845 Platform::ResolveExecutable(const ModuleSpec &module_spec, 846 lldb::ModuleSP &exe_module_sp, 847 const FileSpecList *module_search_paths_ptr) { 848 Status error; 849 if (FileSystem::Instance().Exists(module_spec.GetFileSpec())) { 850 if (module_spec.GetArchitecture().IsValid()) { 851 error = ModuleList::GetSharedModule(module_spec, exe_module_sp, 852 module_search_paths_ptr, nullptr, 853 nullptr); 854 } else { 855 // No valid architecture was specified, ask the platform for the 856 // architectures that we should be using (in the correct order) and see 857 // if we can find a match that way 858 ModuleSpec arch_module_spec(module_spec); 859 for (uint32_t idx = 0; GetSupportedArchitectureAtIndex( 860 idx, arch_module_spec.GetArchitecture()); 861 ++idx) { 862 error = ModuleList::GetSharedModule(arch_module_spec, exe_module_sp, 863 module_search_paths_ptr, nullptr, 864 nullptr); 865 // Did we find an executable using one of the 866 if (error.Success() && exe_module_sp) 867 break; 868 } 869 } 870 } else { 871 error.SetErrorStringWithFormat("'%s' does not exist", 872 module_spec.GetFileSpec().GetPath().c_str()); 873 } 874 return error; 875 } 876 877 Status Platform::ResolveSymbolFile(Target &target, const ModuleSpec &sym_spec, 878 FileSpec &sym_file) { 879 Status error; 880 if (FileSystem::Instance().Exists(sym_spec.GetSymbolFileSpec())) 881 sym_file = sym_spec.GetSymbolFileSpec(); 882 else 883 error.SetErrorString("unable to resolve symbol file"); 884 return error; 885 } 886 887 bool Platform::ResolveRemotePath(const FileSpec &platform_path, 888 FileSpec &resolved_platform_path) { 889 resolved_platform_path = platform_path; 890 FileSystem::Instance().Resolve(resolved_platform_path); 891 return true; 892 } 893 894 const ArchSpec &Platform::GetSystemArchitecture() { 895 if (IsHost()) { 896 if (!m_system_arch.IsValid()) { 897 // We have a local host platform 898 m_system_arch = HostInfo::GetArchitecture(); 899 m_system_arch_set_while_connected = m_system_arch.IsValid(); 900 } 901 } else { 902 // We have a remote platform. We can only fetch the remote system 903 // architecture if we are connected, and we don't want to do it more than 904 // once. 905 906 const bool is_connected = IsConnected(); 907 908 bool fetch = false; 909 if (m_system_arch.IsValid()) { 910 // We have valid OS version info, check to make sure it wasn't manually 911 // set prior to connecting. If it was manually set prior to connecting, 912 // then lets fetch the actual OS version info if we are now connected. 913 if (is_connected && !m_system_arch_set_while_connected) 914 fetch = true; 915 } else { 916 // We don't have valid OS version info, fetch it if we are connected 917 fetch = is_connected; 918 } 919 920 if (fetch) { 921 m_system_arch = GetRemoteSystemArchitecture(); 922 m_system_arch_set_while_connected = m_system_arch.IsValid(); 923 } 924 } 925 return m_system_arch; 926 } 927 928 ArchSpec Platform::GetAugmentedArchSpec(llvm::StringRef triple) { 929 if (triple.empty()) 930 return ArchSpec(); 931 llvm::Triple normalized_triple(llvm::Triple::normalize(triple)); 932 if (!ArchSpec::ContainsOnlyArch(normalized_triple)) 933 return ArchSpec(triple); 934 935 if (auto kind = HostInfo::ParseArchitectureKind(triple)) 936 return HostInfo::GetArchitecture(*kind); 937 938 ArchSpec compatible_arch; 939 ArchSpec raw_arch(triple); 940 if (!IsCompatibleArchitecture(raw_arch, false, &compatible_arch)) 941 return raw_arch; 942 943 if (!compatible_arch.IsValid()) 944 return ArchSpec(normalized_triple); 945 946 const llvm::Triple &compatible_triple = compatible_arch.GetTriple(); 947 if (normalized_triple.getVendorName().empty()) 948 normalized_triple.setVendor(compatible_triple.getVendor()); 949 if (normalized_triple.getOSName().empty()) 950 normalized_triple.setOS(compatible_triple.getOS()); 951 if (normalized_triple.getEnvironmentName().empty()) 952 normalized_triple.setEnvironment(compatible_triple.getEnvironment()); 953 return ArchSpec(normalized_triple); 954 } 955 956 Status Platform::ConnectRemote(Args &args) { 957 Status error; 958 if (IsHost()) 959 error.SetErrorStringWithFormat("The currently selected platform (%s) is " 960 "the host platform and is always connected.", 961 GetPluginName().GetCString()); 962 else 963 error.SetErrorStringWithFormat( 964 "Platform::ConnectRemote() is not supported by %s", 965 GetPluginName().GetCString()); 966 return error; 967 } 968 969 Status Platform::DisconnectRemote() { 970 Status error; 971 if (IsHost()) 972 error.SetErrorStringWithFormat("The currently selected platform (%s) is " 973 "the host platform and is always connected.", 974 GetPluginName().GetCString()); 975 else 976 error.SetErrorStringWithFormat( 977 "Platform::DisconnectRemote() is not supported by %s", 978 GetPluginName().GetCString()); 979 return error; 980 } 981 982 bool Platform::GetProcessInfo(lldb::pid_t pid, 983 ProcessInstanceInfo &process_info) { 984 // Take care of the host case so that each subclass can just call this 985 // function to get the host functionality. 986 if (IsHost()) 987 return Host::GetProcessInfo(pid, process_info); 988 return false; 989 } 990 991 uint32_t Platform::FindProcesses(const ProcessInstanceInfoMatch &match_info, 992 ProcessInstanceInfoList &process_infos) { 993 // Take care of the host case so that each subclass can just call this 994 // function to get the host functionality. 995 uint32_t match_count = 0; 996 if (IsHost()) 997 match_count = Host::FindProcesses(match_info, process_infos); 998 return match_count; 999 } 1000 1001 Status Platform::LaunchProcess(ProcessLaunchInfo &launch_info) { 1002 Status error; 1003 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM)); 1004 LLDB_LOGF(log, "Platform::%s()", __FUNCTION__); 1005 1006 // Take care of the host case so that each subclass can just call this 1007 // function to get the host functionality. 1008 if (IsHost()) { 1009 if (::getenv("LLDB_LAUNCH_FLAG_LAUNCH_IN_TTY")) 1010 launch_info.GetFlags().Set(eLaunchFlagLaunchInTTY); 1011 1012 if (launch_info.GetFlags().Test(eLaunchFlagLaunchInShell)) { 1013 const bool will_debug = launch_info.GetFlags().Test(eLaunchFlagDebug); 1014 const bool first_arg_is_full_shell_command = false; 1015 uint32_t num_resumes = GetResumeCountForLaunchInfo(launch_info); 1016 if (log) { 1017 const FileSpec &shell = launch_info.GetShell(); 1018 std::string shell_str = (shell) ? shell.GetPath() : "<null>"; 1019 LLDB_LOGF(log, 1020 "Platform::%s GetResumeCountForLaunchInfo() returned %" PRIu32 1021 ", shell is '%s'", 1022 __FUNCTION__, num_resumes, shell_str.c_str()); 1023 } 1024 1025 if (!launch_info.ConvertArgumentsForLaunchingInShell( 1026 error, will_debug, first_arg_is_full_shell_command, num_resumes)) 1027 return error; 1028 } else if (launch_info.GetFlags().Test(eLaunchFlagShellExpandArguments)) { 1029 error = ShellExpandArguments(launch_info); 1030 if (error.Fail()) { 1031 error.SetErrorStringWithFormat("shell expansion failed (reason: %s). " 1032 "consider launching with 'process " 1033 "launch'.", 1034 error.AsCString("unknown")); 1035 return error; 1036 } 1037 } 1038 1039 LLDB_LOGF(log, "Platform::%s final launch_info resume count: %" PRIu32, 1040 __FUNCTION__, launch_info.GetResumeCount()); 1041 1042 error = Host::LaunchProcess(launch_info); 1043 } else 1044 error.SetErrorString( 1045 "base lldb_private::Platform class can't launch remote processes"); 1046 return error; 1047 } 1048 1049 Status Platform::ShellExpandArguments(ProcessLaunchInfo &launch_info) { 1050 if (IsHost()) 1051 return Host::ShellExpandArguments(launch_info); 1052 return Status("base lldb_private::Platform class can't expand arguments"); 1053 } 1054 1055 Status Platform::KillProcess(const lldb::pid_t pid) { 1056 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM)); 1057 LLDB_LOGF(log, "Platform::%s, pid %" PRIu64, __FUNCTION__, pid); 1058 1059 // Try to find a process plugin to handle this Kill request. If we can't, 1060 // fall back to the default OS implementation. 1061 size_t num_debuggers = Debugger::GetNumDebuggers(); 1062 for (size_t didx = 0; didx < num_debuggers; ++didx) { 1063 DebuggerSP debugger = Debugger::GetDebuggerAtIndex(didx); 1064 lldb_private::TargetList &targets = debugger->GetTargetList(); 1065 for (int tidx = 0; tidx < targets.GetNumTargets(); ++tidx) { 1066 ProcessSP process = targets.GetTargetAtIndex(tidx)->GetProcessSP(); 1067 if (process->GetID() == pid) 1068 return process->Destroy(true); 1069 } 1070 } 1071 1072 if (!IsHost()) { 1073 return Status( 1074 "base lldb_private::Platform class can't kill remote processes unless " 1075 "they are controlled by a process plugin"); 1076 } 1077 Host::Kill(pid, SIGTERM); 1078 return Status(); 1079 } 1080 1081 lldb::ProcessSP Platform::DebugProcess(ProcessLaunchInfo &launch_info, 1082 Debugger &debugger, Target &target, 1083 Status &error) { 1084 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM)); 1085 LLDB_LOG(log, "target = {0})", &target); 1086 1087 ProcessSP process_sp; 1088 // Make sure we stop at the entry point 1089 launch_info.GetFlags().Set(eLaunchFlagDebug); 1090 // We always launch the process we are going to debug in a separate process 1091 // group, since then we can handle ^C interrupts ourselves w/o having to 1092 // worry about the target getting them as well. 1093 launch_info.SetLaunchInSeparateProcessGroup(true); 1094 1095 // Allow any StructuredData process-bound plugins to adjust the launch info 1096 // if needed 1097 size_t i = 0; 1098 bool iteration_complete = false; 1099 // Note iteration can't simply go until a nullptr callback is returned, as it 1100 // is valid for a plugin to not supply a filter. 1101 auto get_filter_func = PluginManager::GetStructuredDataFilterCallbackAtIndex; 1102 for (auto filter_callback = get_filter_func(i, iteration_complete); 1103 !iteration_complete; 1104 filter_callback = get_filter_func(++i, iteration_complete)) { 1105 if (filter_callback) { 1106 // Give this ProcessLaunchInfo filter a chance to adjust the launch info. 1107 error = (*filter_callback)(launch_info, &target); 1108 if (!error.Success()) { 1109 LLDB_LOGF(log, 1110 "Platform::%s() StructuredDataPlugin launch " 1111 "filter failed.", 1112 __FUNCTION__); 1113 return process_sp; 1114 } 1115 } 1116 } 1117 1118 error = LaunchProcess(launch_info); 1119 if (error.Success()) { 1120 LLDB_LOGF(log, 1121 "Platform::%s LaunchProcess() call succeeded (pid=%" PRIu64 ")", 1122 __FUNCTION__, launch_info.GetProcessID()); 1123 if (launch_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) { 1124 ProcessAttachInfo attach_info(launch_info); 1125 process_sp = Attach(attach_info, debugger, &target, error); 1126 if (process_sp) { 1127 LLDB_LOGF(log, "Platform::%s Attach() succeeded, Process plugin: %s", 1128 __FUNCTION__, process_sp->GetPluginName().AsCString()); 1129 launch_info.SetHijackListener(attach_info.GetHijackListener()); 1130 1131 // Since we attached to the process, it will think it needs to detach 1132 // if the process object just goes away without an explicit call to 1133 // Process::Kill() or Process::Detach(), so let it know to kill the 1134 // process if this happens. 1135 process_sp->SetShouldDetach(false); 1136 1137 // If we didn't have any file actions, the pseudo terminal might have 1138 // been used where the secondary side was given as the file to open for 1139 // stdin/out/err after we have already opened the master so we can 1140 // read/write stdin/out/err. 1141 int pty_fd = launch_info.GetPTY().ReleasePrimaryFileDescriptor(); 1142 if (pty_fd != PseudoTerminal::invalid_fd) { 1143 process_sp->SetSTDIOFileDescriptor(pty_fd); 1144 } 1145 } else { 1146 LLDB_LOGF(log, "Platform::%s Attach() failed: %s", __FUNCTION__, 1147 error.AsCString()); 1148 } 1149 } else { 1150 LLDB_LOGF(log, 1151 "Platform::%s LaunchProcess() returned launch_info with " 1152 "invalid process id", 1153 __FUNCTION__); 1154 } 1155 } else { 1156 LLDB_LOGF(log, "Platform::%s LaunchProcess() failed: %s", __FUNCTION__, 1157 error.AsCString()); 1158 } 1159 1160 return process_sp; 1161 } 1162 1163 lldb::PlatformSP 1164 Platform::GetPlatformForArchitecture(const ArchSpec &arch, 1165 ArchSpec *platform_arch_ptr) { 1166 lldb::PlatformSP platform_sp; 1167 Status error; 1168 if (arch.IsValid()) 1169 platform_sp = Platform::Create(arch, platform_arch_ptr, error); 1170 return platform_sp; 1171 } 1172 1173 /// Lets a platform answer if it is compatible with a given 1174 /// architecture and the target triple contained within. 1175 bool Platform::IsCompatibleArchitecture(const ArchSpec &arch, 1176 bool exact_arch_match, 1177 ArchSpec *compatible_arch_ptr) { 1178 // If the architecture is invalid, we must answer true... 1179 if (arch.IsValid()) { 1180 ArchSpec platform_arch; 1181 // Try for an exact architecture match first. 1182 if (exact_arch_match) { 1183 for (uint32_t arch_idx = 0; 1184 GetSupportedArchitectureAtIndex(arch_idx, platform_arch); 1185 ++arch_idx) { 1186 if (arch.IsExactMatch(platform_arch)) { 1187 if (compatible_arch_ptr) 1188 *compatible_arch_ptr = platform_arch; 1189 return true; 1190 } 1191 } 1192 } else { 1193 for (uint32_t arch_idx = 0; 1194 GetSupportedArchitectureAtIndex(arch_idx, platform_arch); 1195 ++arch_idx) { 1196 if (arch.IsCompatibleMatch(platform_arch)) { 1197 if (compatible_arch_ptr) 1198 *compatible_arch_ptr = platform_arch; 1199 return true; 1200 } 1201 } 1202 } 1203 } 1204 if (compatible_arch_ptr) 1205 compatible_arch_ptr->Clear(); 1206 return false; 1207 } 1208 1209 Status Platform::PutFile(const FileSpec &source, const FileSpec &destination, 1210 uint32_t uid, uint32_t gid) { 1211 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM)); 1212 LLDB_LOGF(log, "[PutFile] Using block by block transfer....\n"); 1213 1214 auto source_open_options = 1215 File::eOpenOptionReadOnly | File::eOpenOptionCloseOnExec; 1216 namespace fs = llvm::sys::fs; 1217 if (fs::is_symlink_file(source.GetPath())) 1218 source_open_options |= File::eOpenOptionDontFollowSymlinks; 1219 1220 auto source_file = FileSystem::Instance().Open(source, source_open_options, 1221 lldb::eFilePermissionsUserRW); 1222 if (!source_file) 1223 return Status(source_file.takeError()); 1224 Status error; 1225 uint32_t permissions = source_file.get()->GetPermissions(error); 1226 if (permissions == 0) 1227 permissions = lldb::eFilePermissionsFileDefault; 1228 1229 lldb::user_id_t dest_file = OpenFile( 1230 destination, File::eOpenOptionCanCreate | File::eOpenOptionWriteOnly | 1231 File::eOpenOptionTruncate | File::eOpenOptionCloseOnExec, 1232 permissions, error); 1233 LLDB_LOGF(log, "dest_file = %" PRIu64 "\n", dest_file); 1234 1235 if (error.Fail()) 1236 return error; 1237 if (dest_file == UINT64_MAX) 1238 return Status("unable to open target file"); 1239 lldb::DataBufferSP buffer_sp(new DataBufferHeap(1024 * 16, 0)); 1240 uint64_t offset = 0; 1241 for (;;) { 1242 size_t bytes_read = buffer_sp->GetByteSize(); 1243 error = source_file.get()->Read(buffer_sp->GetBytes(), bytes_read); 1244 if (error.Fail() || bytes_read == 0) 1245 break; 1246 1247 const uint64_t bytes_written = 1248 WriteFile(dest_file, offset, buffer_sp->GetBytes(), bytes_read, error); 1249 if (error.Fail()) 1250 break; 1251 1252 offset += bytes_written; 1253 if (bytes_written != bytes_read) { 1254 // We didn't write the correct number of bytes, so adjust the file 1255 // position in the source file we are reading from... 1256 source_file.get()->SeekFromStart(offset); 1257 } 1258 } 1259 CloseFile(dest_file, error); 1260 1261 if (uid == UINT32_MAX && gid == UINT32_MAX) 1262 return error; 1263 1264 // TODO: ChownFile? 1265 1266 return error; 1267 } 1268 1269 Status Platform::GetFile(const FileSpec &source, const FileSpec &destination) { 1270 Status error("unimplemented"); 1271 return error; 1272 } 1273 1274 Status 1275 Platform::CreateSymlink(const FileSpec &src, // The name of the link is in src 1276 const FileSpec &dst) // The symlink points to dst 1277 { 1278 Status error("unimplemented"); 1279 return error; 1280 } 1281 1282 bool Platform::GetFileExists(const lldb_private::FileSpec &file_spec) { 1283 return false; 1284 } 1285 1286 Status Platform::Unlink(const FileSpec &path) { 1287 Status error("unimplemented"); 1288 return error; 1289 } 1290 1291 MmapArgList Platform::GetMmapArgumentList(const ArchSpec &arch, addr_t addr, 1292 addr_t length, unsigned prot, 1293 unsigned flags, addr_t fd, 1294 addr_t offset) { 1295 uint64_t flags_platform = 0; 1296 if (flags & eMmapFlagsPrivate) 1297 flags_platform |= MAP_PRIVATE; 1298 if (flags & eMmapFlagsAnon) 1299 flags_platform |= MAP_ANON; 1300 1301 MmapArgList args({addr, length, prot, flags_platform, fd, offset}); 1302 return args; 1303 } 1304 1305 lldb_private::Status Platform::RunShellCommand( 1306 llvm::StringRef command, 1307 const FileSpec & 1308 working_dir, // Pass empty FileSpec to use the current working directory 1309 int *status_ptr, // Pass nullptr if you don't want the process exit status 1310 int *signo_ptr, // Pass nullptr if you don't want the signal that caused the 1311 // process to exit 1312 std::string 1313 *command_output, // Pass nullptr if you don't want the command output 1314 const Timeout<std::micro> &timeout) { 1315 return RunShellCommand(llvm::StringRef(), command, working_dir, status_ptr, 1316 signo_ptr, command_output, timeout); 1317 } 1318 1319 lldb_private::Status Platform::RunShellCommand( 1320 llvm::StringRef shell, // Pass empty if you want to use the default 1321 // shell interpreter 1322 llvm::StringRef command, // Shouldn't be empty 1323 const FileSpec & 1324 working_dir, // Pass empty FileSpec to use the current working directory 1325 int *status_ptr, // Pass nullptr if you don't want the process exit status 1326 int *signo_ptr, // Pass nullptr if you don't want the signal that caused the 1327 // process to exit 1328 std::string 1329 *command_output, // Pass nullptr if you don't want the command output 1330 const Timeout<std::micro> &timeout) { 1331 if (IsHost()) 1332 return Host::RunShellCommand(shell, command, working_dir, status_ptr, 1333 signo_ptr, command_output, timeout); 1334 else 1335 return Status("unimplemented"); 1336 } 1337 1338 bool Platform::CalculateMD5(const FileSpec &file_spec, uint64_t &low, 1339 uint64_t &high) { 1340 if (!IsHost()) 1341 return false; 1342 auto Result = llvm::sys::fs::md5_contents(file_spec.GetPath()); 1343 if (!Result) 1344 return false; 1345 std::tie(high, low) = Result->words(); 1346 return true; 1347 } 1348 1349 void Platform::SetLocalCacheDirectory(const char *local) { 1350 m_local_cache_directory.assign(local); 1351 } 1352 1353 const char *Platform::GetLocalCacheDirectory() { 1354 return m_local_cache_directory.c_str(); 1355 } 1356 1357 static constexpr OptionDefinition g_rsync_option_table[] = { 1358 {LLDB_OPT_SET_ALL, false, "rsync", 'r', OptionParser::eNoArgument, nullptr, 1359 {}, 0, eArgTypeNone, "Enable rsync."}, 1360 {LLDB_OPT_SET_ALL, false, "rsync-opts", 'R', 1361 OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeCommandName, 1362 "Platform-specific options required for rsync to work."}, 1363 {LLDB_OPT_SET_ALL, false, "rsync-prefix", 'P', 1364 OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeCommandName, 1365 "Platform-specific rsync prefix put before the remote path."}, 1366 {LLDB_OPT_SET_ALL, false, "ignore-remote-hostname", 'i', 1367 OptionParser::eNoArgument, nullptr, {}, 0, eArgTypeNone, 1368 "Do not automatically fill in the remote hostname when composing the " 1369 "rsync command."}, 1370 }; 1371 1372 static constexpr OptionDefinition g_ssh_option_table[] = { 1373 {LLDB_OPT_SET_ALL, false, "ssh", 's', OptionParser::eNoArgument, nullptr, 1374 {}, 0, eArgTypeNone, "Enable SSH."}, 1375 {LLDB_OPT_SET_ALL, false, "ssh-opts", 'S', OptionParser::eRequiredArgument, 1376 nullptr, {}, 0, eArgTypeCommandName, 1377 "Platform-specific options required for SSH to work."}, 1378 }; 1379 1380 static constexpr OptionDefinition g_caching_option_table[] = { 1381 {LLDB_OPT_SET_ALL, false, "local-cache-dir", 'c', 1382 OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypePath, 1383 "Path in which to store local copies of files."}, 1384 }; 1385 1386 llvm::ArrayRef<OptionDefinition> OptionGroupPlatformRSync::GetDefinitions() { 1387 return llvm::makeArrayRef(g_rsync_option_table); 1388 } 1389 1390 void OptionGroupPlatformRSync::OptionParsingStarting( 1391 ExecutionContext *execution_context) { 1392 m_rsync = false; 1393 m_rsync_opts.clear(); 1394 m_rsync_prefix.clear(); 1395 m_ignores_remote_hostname = false; 1396 } 1397 1398 lldb_private::Status 1399 OptionGroupPlatformRSync::SetOptionValue(uint32_t option_idx, 1400 llvm::StringRef option_arg, 1401 ExecutionContext *execution_context) { 1402 Status error; 1403 char short_option = (char)GetDefinitions()[option_idx].short_option; 1404 switch (short_option) { 1405 case 'r': 1406 m_rsync = true; 1407 break; 1408 1409 case 'R': 1410 m_rsync_opts.assign(std::string(option_arg)); 1411 break; 1412 1413 case 'P': 1414 m_rsync_prefix.assign(std::string(option_arg)); 1415 break; 1416 1417 case 'i': 1418 m_ignores_remote_hostname = true; 1419 break; 1420 1421 default: 1422 error.SetErrorStringWithFormat("unrecognized option '%c'", short_option); 1423 break; 1424 } 1425 1426 return error; 1427 } 1428 1429 lldb::BreakpointSP 1430 Platform::SetThreadCreationBreakpoint(lldb_private::Target &target) { 1431 return lldb::BreakpointSP(); 1432 } 1433 1434 llvm::ArrayRef<OptionDefinition> OptionGroupPlatformSSH::GetDefinitions() { 1435 return llvm::makeArrayRef(g_ssh_option_table); 1436 } 1437 1438 void OptionGroupPlatformSSH::OptionParsingStarting( 1439 ExecutionContext *execution_context) { 1440 m_ssh = false; 1441 m_ssh_opts.clear(); 1442 } 1443 1444 lldb_private::Status 1445 OptionGroupPlatformSSH::SetOptionValue(uint32_t option_idx, 1446 llvm::StringRef option_arg, 1447 ExecutionContext *execution_context) { 1448 Status error; 1449 char short_option = (char)GetDefinitions()[option_idx].short_option; 1450 switch (short_option) { 1451 case 's': 1452 m_ssh = true; 1453 break; 1454 1455 case 'S': 1456 m_ssh_opts.assign(std::string(option_arg)); 1457 break; 1458 1459 default: 1460 error.SetErrorStringWithFormat("unrecognized option '%c'", short_option); 1461 break; 1462 } 1463 1464 return error; 1465 } 1466 1467 llvm::ArrayRef<OptionDefinition> OptionGroupPlatformCaching::GetDefinitions() { 1468 return llvm::makeArrayRef(g_caching_option_table); 1469 } 1470 1471 void OptionGroupPlatformCaching::OptionParsingStarting( 1472 ExecutionContext *execution_context) { 1473 m_cache_dir.clear(); 1474 } 1475 1476 lldb_private::Status OptionGroupPlatformCaching::SetOptionValue( 1477 uint32_t option_idx, llvm::StringRef option_arg, 1478 ExecutionContext *execution_context) { 1479 Status error; 1480 char short_option = (char)GetDefinitions()[option_idx].short_option; 1481 switch (short_option) { 1482 case 'c': 1483 m_cache_dir.assign(std::string(option_arg)); 1484 break; 1485 1486 default: 1487 error.SetErrorStringWithFormat("unrecognized option '%c'", short_option); 1488 break; 1489 } 1490 1491 return error; 1492 } 1493 1494 Environment Platform::GetEnvironment() { return Environment(); } 1495 1496 const std::vector<ConstString> &Platform::GetTrapHandlerSymbolNames() { 1497 if (!m_calculated_trap_handlers) { 1498 std::lock_guard<std::mutex> guard(m_mutex); 1499 if (!m_calculated_trap_handlers) { 1500 CalculateTrapHandlerSymbolNames(); 1501 m_calculated_trap_handlers = true; 1502 } 1503 } 1504 return m_trap_handlers; 1505 } 1506 1507 Status Platform::GetCachedExecutable( 1508 ModuleSpec &module_spec, lldb::ModuleSP &module_sp, 1509 const FileSpecList *module_search_paths_ptr, Platform &remote_platform) { 1510 const auto platform_spec = module_spec.GetFileSpec(); 1511 const auto error = LoadCachedExecutable( 1512 module_spec, module_sp, module_search_paths_ptr, remote_platform); 1513 if (error.Success()) { 1514 module_spec.GetFileSpec() = module_sp->GetFileSpec(); 1515 module_spec.GetPlatformFileSpec() = platform_spec; 1516 } 1517 1518 return error; 1519 } 1520 1521 Status Platform::LoadCachedExecutable( 1522 const ModuleSpec &module_spec, lldb::ModuleSP &module_sp, 1523 const FileSpecList *module_search_paths_ptr, Platform &remote_platform) { 1524 return GetRemoteSharedModule(module_spec, nullptr, module_sp, 1525 [&](const ModuleSpec &spec) { 1526 return remote_platform.ResolveExecutable( 1527 spec, module_sp, module_search_paths_ptr); 1528 }, 1529 nullptr); 1530 } 1531 1532 Status Platform::GetRemoteSharedModule(const ModuleSpec &module_spec, 1533 Process *process, 1534 lldb::ModuleSP &module_sp, 1535 const ModuleResolver &module_resolver, 1536 bool *did_create_ptr) { 1537 // Get module information from a target. 1538 ModuleSpec resolved_module_spec; 1539 bool got_module_spec = false; 1540 if (process) { 1541 // Try to get module information from the process 1542 if (process->GetModuleSpec(module_spec.GetFileSpec(), 1543 module_spec.GetArchitecture(), 1544 resolved_module_spec)) { 1545 if (!module_spec.GetUUID().IsValid() || 1546 module_spec.GetUUID() == resolved_module_spec.GetUUID()) { 1547 got_module_spec = true; 1548 } 1549 } 1550 } 1551 1552 if (!module_spec.GetArchitecture().IsValid()) { 1553 Status error; 1554 // No valid architecture was specified, ask the platform for the 1555 // architectures that we should be using (in the correct order) and see if 1556 // we can find a match that way 1557 ModuleSpec arch_module_spec(module_spec); 1558 for (uint32_t idx = 0; GetSupportedArchitectureAtIndex( 1559 idx, arch_module_spec.GetArchitecture()); 1560 ++idx) { 1561 error = ModuleList::GetSharedModule(arch_module_spec, module_sp, nullptr, 1562 nullptr, nullptr); 1563 // Did we find an executable using one of the 1564 if (error.Success() && module_sp) 1565 break; 1566 } 1567 if (module_sp) { 1568 resolved_module_spec = arch_module_spec; 1569 got_module_spec = true; 1570 } 1571 } 1572 1573 if (!got_module_spec) { 1574 // Get module information from a target. 1575 if (GetModuleSpec(module_spec.GetFileSpec(), module_spec.GetArchitecture(), 1576 resolved_module_spec)) { 1577 if (!module_spec.GetUUID().IsValid() || 1578 module_spec.GetUUID() == resolved_module_spec.GetUUID()) { 1579 got_module_spec = true; 1580 } 1581 } 1582 } 1583 1584 if (!got_module_spec) { 1585 // Fall back to the given module resolver, which may have its own 1586 // search logic. 1587 return module_resolver(module_spec); 1588 } 1589 1590 // If we are looking for a specific UUID, make sure resolved_module_spec has 1591 // the same one before we search. 1592 if (module_spec.GetUUID().IsValid()) { 1593 resolved_module_spec.GetUUID() = module_spec.GetUUID(); 1594 } 1595 1596 // Trying to find a module by UUID on local file system. 1597 const auto error = module_resolver(resolved_module_spec); 1598 if (error.Fail()) { 1599 if (GetCachedSharedModule(resolved_module_spec, module_sp, did_create_ptr)) 1600 return Status(); 1601 } 1602 1603 return error; 1604 } 1605 1606 bool Platform::GetCachedSharedModule(const ModuleSpec &module_spec, 1607 lldb::ModuleSP &module_sp, 1608 bool *did_create_ptr) { 1609 if (IsHost() || !GetGlobalPlatformProperties()->GetUseModuleCache() || 1610 !GetGlobalPlatformProperties()->GetModuleCacheDirectory()) 1611 return false; 1612 1613 Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); 1614 1615 // Check local cache for a module. 1616 auto error = m_module_cache->GetAndPut( 1617 GetModuleCacheRoot(), GetCacheHostname(), module_spec, 1618 [this](const ModuleSpec &module_spec, 1619 const FileSpec &tmp_download_file_spec) { 1620 return DownloadModuleSlice( 1621 module_spec.GetFileSpec(), module_spec.GetObjectOffset(), 1622 module_spec.GetObjectSize(), tmp_download_file_spec); 1623 1624 }, 1625 [this](const ModuleSP &module_sp, 1626 const FileSpec &tmp_download_file_spec) { 1627 return DownloadSymbolFile(module_sp, tmp_download_file_spec); 1628 }, 1629 module_sp, did_create_ptr); 1630 if (error.Success()) 1631 return true; 1632 1633 LLDB_LOGF(log, "Platform::%s - module %s not found in local cache: %s", 1634 __FUNCTION__, module_spec.GetUUID().GetAsString().c_str(), 1635 error.AsCString()); 1636 return false; 1637 } 1638 1639 Status Platform::DownloadModuleSlice(const FileSpec &src_file_spec, 1640 const uint64_t src_offset, 1641 const uint64_t src_size, 1642 const FileSpec &dst_file_spec) { 1643 Status error; 1644 1645 std::error_code EC; 1646 llvm::raw_fd_ostream dst(dst_file_spec.GetPath(), EC, llvm::sys::fs::OF_None); 1647 if (EC) { 1648 error.SetErrorStringWithFormat("unable to open destination file: %s", 1649 dst_file_spec.GetPath().c_str()); 1650 return error; 1651 } 1652 1653 auto src_fd = OpenFile(src_file_spec, File::eOpenOptionReadOnly, 1654 lldb::eFilePermissionsFileDefault, error); 1655 1656 if (error.Fail()) { 1657 error.SetErrorStringWithFormat("unable to open source file: %s", 1658 error.AsCString()); 1659 return error; 1660 } 1661 1662 std::vector<char> buffer(1024); 1663 auto offset = src_offset; 1664 uint64_t total_bytes_read = 0; 1665 while (total_bytes_read < src_size) { 1666 const auto to_read = std::min(static_cast<uint64_t>(buffer.size()), 1667 src_size - total_bytes_read); 1668 const uint64_t n_read = 1669 ReadFile(src_fd, offset, &buffer[0], to_read, error); 1670 if (error.Fail()) 1671 break; 1672 if (n_read == 0) { 1673 error.SetErrorString("read 0 bytes"); 1674 break; 1675 } 1676 offset += n_read; 1677 total_bytes_read += n_read; 1678 dst.write(&buffer[0], n_read); 1679 } 1680 1681 Status close_error; 1682 CloseFile(src_fd, close_error); // Ignoring close error. 1683 1684 return error; 1685 } 1686 1687 Status Platform::DownloadSymbolFile(const lldb::ModuleSP &module_sp, 1688 const FileSpec &dst_file_spec) { 1689 return Status( 1690 "Symbol file downloading not supported by the default platform."); 1691 } 1692 1693 FileSpec Platform::GetModuleCacheRoot() { 1694 auto dir_spec = GetGlobalPlatformProperties()->GetModuleCacheDirectory(); 1695 dir_spec.AppendPathComponent(GetName().AsCString()); 1696 return dir_spec; 1697 } 1698 1699 const char *Platform::GetCacheHostname() { return GetHostname(); } 1700 1701 const UnixSignalsSP &Platform::GetRemoteUnixSignals() { 1702 static const auto s_default_unix_signals_sp = std::make_shared<UnixSignals>(); 1703 return s_default_unix_signals_sp; 1704 } 1705 1706 UnixSignalsSP Platform::GetUnixSignals() { 1707 if (IsHost()) 1708 return UnixSignals::CreateForHost(); 1709 return GetRemoteUnixSignals(); 1710 } 1711 1712 uint32_t Platform::LoadImage(lldb_private::Process *process, 1713 const lldb_private::FileSpec &local_file, 1714 const lldb_private::FileSpec &remote_file, 1715 lldb_private::Status &error) { 1716 if (local_file && remote_file) { 1717 // Both local and remote file was specified. Install the local file to the 1718 // given location. 1719 if (IsRemote() || local_file != remote_file) { 1720 error = Install(local_file, remote_file); 1721 if (error.Fail()) 1722 return LLDB_INVALID_IMAGE_TOKEN; 1723 } 1724 return DoLoadImage(process, remote_file, nullptr, error); 1725 } 1726 1727 if (local_file) { 1728 // Only local file was specified. Install it to the current working 1729 // directory. 1730 FileSpec target_file = GetWorkingDirectory(); 1731 target_file.AppendPathComponent(local_file.GetFilename().AsCString()); 1732 if (IsRemote() || local_file != target_file) { 1733 error = Install(local_file, target_file); 1734 if (error.Fail()) 1735 return LLDB_INVALID_IMAGE_TOKEN; 1736 } 1737 return DoLoadImage(process, target_file, nullptr, error); 1738 } 1739 1740 if (remote_file) { 1741 // Only remote file was specified so we don't have to do any copying 1742 return DoLoadImage(process, remote_file, nullptr, error); 1743 } 1744 1745 error.SetErrorString("Neither local nor remote file was specified"); 1746 return LLDB_INVALID_IMAGE_TOKEN; 1747 } 1748 1749 uint32_t Platform::DoLoadImage(lldb_private::Process *process, 1750 const lldb_private::FileSpec &remote_file, 1751 const std::vector<std::string> *paths, 1752 lldb_private::Status &error, 1753 lldb_private::FileSpec *loaded_image) { 1754 error.SetErrorString("LoadImage is not supported on the current platform"); 1755 return LLDB_INVALID_IMAGE_TOKEN; 1756 } 1757 1758 uint32_t Platform::LoadImageUsingPaths(lldb_private::Process *process, 1759 const lldb_private::FileSpec &remote_filename, 1760 const std::vector<std::string> &paths, 1761 lldb_private::Status &error, 1762 lldb_private::FileSpec *loaded_path) 1763 { 1764 FileSpec file_to_use; 1765 if (remote_filename.IsAbsolute()) 1766 file_to_use = FileSpec(remote_filename.GetFilename().GetStringRef(), 1767 1768 remote_filename.GetPathStyle()); 1769 else 1770 file_to_use = remote_filename; 1771 1772 return DoLoadImage(process, file_to_use, &paths, error, loaded_path); 1773 } 1774 1775 Status Platform::UnloadImage(lldb_private::Process *process, 1776 uint32_t image_token) { 1777 return Status("UnloadImage is not supported on the current platform"); 1778 } 1779 1780 lldb::ProcessSP Platform::ConnectProcess(llvm::StringRef connect_url, 1781 llvm::StringRef plugin_name, 1782 Debugger &debugger, Target *target, 1783 Status &error) { 1784 return DoConnectProcess(connect_url, plugin_name, debugger, nullptr, target, 1785 error); 1786 } 1787 1788 lldb::ProcessSP Platform::ConnectProcessSynchronous( 1789 llvm::StringRef connect_url, llvm::StringRef plugin_name, 1790 Debugger &debugger, Stream &stream, Target *target, Status &error) { 1791 return DoConnectProcess(connect_url, plugin_name, debugger, &stream, target, 1792 error); 1793 } 1794 1795 lldb::ProcessSP Platform::DoConnectProcess(llvm::StringRef connect_url, 1796 llvm::StringRef plugin_name, 1797 Debugger &debugger, Stream *stream, 1798 Target *target, Status &error) { 1799 error.Clear(); 1800 1801 if (!target) { 1802 ArchSpec arch; 1803 if (target && target->GetArchitecture().IsValid()) 1804 arch = target->GetArchitecture(); 1805 else 1806 arch = Target::GetDefaultArchitecture(); 1807 1808 const char *triple = ""; 1809 if (arch.IsValid()) 1810 triple = arch.GetTriple().getTriple().c_str(); 1811 1812 TargetSP new_target_sp; 1813 error = debugger.GetTargetList().CreateTarget( 1814 debugger, "", triple, eLoadDependentsNo, nullptr, new_target_sp); 1815 target = new_target_sp.get(); 1816 } 1817 1818 if (!target || error.Fail()) 1819 return nullptr; 1820 1821 lldb::ProcessSP process_sp = 1822 target->CreateProcess(debugger.GetListener(), plugin_name, nullptr, true); 1823 1824 if (!process_sp) 1825 return nullptr; 1826 1827 // If this private method is called with a stream we are synchronous. 1828 const bool synchronous = stream != nullptr; 1829 1830 ListenerSP listener_sp( 1831 Listener::MakeListener("lldb.Process.ConnectProcess.hijack")); 1832 if (synchronous) 1833 process_sp->HijackProcessEvents(listener_sp); 1834 1835 error = process_sp->ConnectRemote(connect_url); 1836 if (error.Fail()) { 1837 if (synchronous) 1838 process_sp->RestoreProcessEvents(); 1839 return nullptr; 1840 } 1841 1842 if (synchronous) { 1843 EventSP event_sp; 1844 process_sp->WaitForProcessToStop(llvm::None, &event_sp, true, listener_sp, 1845 nullptr); 1846 process_sp->RestoreProcessEvents(); 1847 bool pop_process_io_handler = false; 1848 Process::HandleProcessStateChangedEvent(event_sp, stream, 1849 pop_process_io_handler); 1850 } 1851 1852 return process_sp; 1853 } 1854 1855 size_t Platform::ConnectToWaitingProcesses(lldb_private::Debugger &debugger, 1856 lldb_private::Status &error) { 1857 error.Clear(); 1858 return 0; 1859 } 1860 1861 size_t Platform::GetSoftwareBreakpointTrapOpcode(Target &target, 1862 BreakpointSite *bp_site) { 1863 ArchSpec arch = target.GetArchitecture(); 1864 assert(arch.IsValid()); 1865 const uint8_t *trap_opcode = nullptr; 1866 size_t trap_opcode_size = 0; 1867 1868 switch (arch.GetMachine()) { 1869 case llvm::Triple::aarch64_32: 1870 case llvm::Triple::aarch64: { 1871 static const uint8_t g_aarch64_opcode[] = {0x00, 0x00, 0x20, 0xd4}; 1872 trap_opcode = g_aarch64_opcode; 1873 trap_opcode_size = sizeof(g_aarch64_opcode); 1874 } break; 1875 1876 case llvm::Triple::arc: { 1877 static const uint8_t g_hex_opcode[] = { 0xff, 0x7f }; 1878 trap_opcode = g_hex_opcode; 1879 trap_opcode_size = sizeof(g_hex_opcode); 1880 } break; 1881 1882 // TODO: support big-endian arm and thumb trap codes. 1883 case llvm::Triple::arm: { 1884 // The ARM reference recommends the use of 0xe7fddefe and 0xdefe but the 1885 // linux kernel does otherwise. 1886 static const uint8_t g_arm_breakpoint_opcode[] = {0xf0, 0x01, 0xf0, 0xe7}; 1887 static const uint8_t g_thumb_breakpoint_opcode[] = {0x01, 0xde}; 1888 1889 lldb::BreakpointLocationSP bp_loc_sp(bp_site->GetOwnerAtIndex(0)); 1890 AddressClass addr_class = AddressClass::eUnknown; 1891 1892 if (bp_loc_sp) { 1893 addr_class = bp_loc_sp->GetAddress().GetAddressClass(); 1894 if (addr_class == AddressClass::eUnknown && 1895 (bp_loc_sp->GetAddress().GetFileAddress() & 1)) 1896 addr_class = AddressClass::eCodeAlternateISA; 1897 } 1898 1899 if (addr_class == AddressClass::eCodeAlternateISA) { 1900 trap_opcode = g_thumb_breakpoint_opcode; 1901 trap_opcode_size = sizeof(g_thumb_breakpoint_opcode); 1902 } else { 1903 trap_opcode = g_arm_breakpoint_opcode; 1904 trap_opcode_size = sizeof(g_arm_breakpoint_opcode); 1905 } 1906 } break; 1907 1908 case llvm::Triple::avr: { 1909 static const uint8_t g_hex_opcode[] = {0x98, 0x95}; 1910 trap_opcode = g_hex_opcode; 1911 trap_opcode_size = sizeof(g_hex_opcode); 1912 } break; 1913 1914 case llvm::Triple::mips: 1915 case llvm::Triple::mips64: { 1916 static const uint8_t g_hex_opcode[] = {0x00, 0x00, 0x00, 0x0d}; 1917 trap_opcode = g_hex_opcode; 1918 trap_opcode_size = sizeof(g_hex_opcode); 1919 } break; 1920 1921 case llvm::Triple::mipsel: 1922 case llvm::Triple::mips64el: { 1923 static const uint8_t g_hex_opcode[] = {0x0d, 0x00, 0x00, 0x00}; 1924 trap_opcode = g_hex_opcode; 1925 trap_opcode_size = sizeof(g_hex_opcode); 1926 } break; 1927 1928 case llvm::Triple::systemz: { 1929 static const uint8_t g_hex_opcode[] = {0x00, 0x01}; 1930 trap_opcode = g_hex_opcode; 1931 trap_opcode_size = sizeof(g_hex_opcode); 1932 } break; 1933 1934 case llvm::Triple::hexagon: { 1935 static const uint8_t g_hex_opcode[] = {0x0c, 0xdb, 0x00, 0x54}; 1936 trap_opcode = g_hex_opcode; 1937 trap_opcode_size = sizeof(g_hex_opcode); 1938 } break; 1939 1940 case llvm::Triple::ppc: 1941 case llvm::Triple::ppc64: { 1942 static const uint8_t g_ppc_opcode[] = {0x7f, 0xe0, 0x00, 0x08}; 1943 trap_opcode = g_ppc_opcode; 1944 trap_opcode_size = sizeof(g_ppc_opcode); 1945 } break; 1946 1947 case llvm::Triple::ppc64le: { 1948 static const uint8_t g_ppc64le_opcode[] = {0x08, 0x00, 0xe0, 0x7f}; // trap 1949 trap_opcode = g_ppc64le_opcode; 1950 trap_opcode_size = sizeof(g_ppc64le_opcode); 1951 } break; 1952 1953 case llvm::Triple::x86: 1954 case llvm::Triple::x86_64: { 1955 static const uint8_t g_i386_opcode[] = {0xCC}; 1956 trap_opcode = g_i386_opcode; 1957 trap_opcode_size = sizeof(g_i386_opcode); 1958 } break; 1959 1960 default: 1961 return 0; 1962 } 1963 1964 assert(bp_site); 1965 if (bp_site->SetTrapOpcode(trap_opcode, trap_opcode_size)) 1966 return trap_opcode_size; 1967 1968 return 0; 1969 } 1970