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