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