//===-- Platform.cpp --------------------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // C Includes // C++ Includes #include #include #include // Other libraries and framework includes #include "llvm/Support/FileSystem.h" #include "llvm/Support/Path.h" // Project includes #include "lldb/Target/Platform.h" #include "lldb/Breakpoint/BreakpointIDList.h" #include "lldb/Breakpoint/BreakpointLocation.h" #include "lldb/Core/DataBufferHeap.h" #include "lldb/Core/Debugger.h" #include "lldb/Core/Error.h" #include "lldb/Core/Log.h" #include "lldb/Core/Module.h" #include "lldb/Core/ModuleSpec.h" #include "lldb/Core/PluginManager.h" #include "lldb/Core/StreamFile.h" #include "lldb/Core/StructuredData.h" #include "lldb/Host/FileSpec.h" #include "lldb/Host/FileSystem.h" #include "lldb/Host/Host.h" #include "lldb/Host/HostInfo.h" #include "lldb/Interpreter/OptionValueProperties.h" #include "lldb/Interpreter/Property.h" #include "lldb/Symbol/ObjectFile.h" #include "lldb/Target/Process.h" #include "lldb/Target/Target.h" #include "lldb/Target/UnixSignals.h" #include "lldb/Utility/Utils.h" #include "Utility/ModuleCache.h" // Define these constants from POSIX mman.h rather than include the file // so that they will be correct even when compiled on Linux. #define MAP_PRIVATE 2 #define MAP_ANON 0x1000 using namespace lldb; using namespace lldb_private; static uint32_t g_initialize_count = 0; // Use a singleton function for g_local_platform_sp to avoid init // constructors since LLDB is often part of a shared library static PlatformSP& GetHostPlatformSP () { static PlatformSP g_platform_sp; return g_platform_sp; } const char * Platform::GetHostPlatformName () { return "host"; } namespace { PropertyDefinition g_properties[] = { { "use-module-cache" , OptionValue::eTypeBoolean , true, true, nullptr, nullptr, "Use module cache." }, { "module-cache-directory", OptionValue::eTypeFileSpec, true, 0 , nullptr, nullptr, "Root directory for cached modules." }, { nullptr , OptionValue::eTypeInvalid , false, 0, nullptr, nullptr, nullptr } }; enum { ePropertyUseModuleCache, ePropertyModuleCacheDirectory }; } // namespace ConstString PlatformProperties::GetSettingName () { static ConstString g_setting_name("platform"); return g_setting_name; } PlatformProperties::PlatformProperties () { m_collection_sp.reset (new OptionValueProperties (GetSettingName ())); m_collection_sp->Initialize (g_properties); auto module_cache_dir = GetModuleCacheDirectory (); if (module_cache_dir) return; llvm::SmallString<64> user_home_dir; if (!llvm::sys::path::home_directory (user_home_dir)) return; module_cache_dir = FileSpec (user_home_dir.c_str(), false); module_cache_dir.AppendPathComponent (".lldb"); module_cache_dir.AppendPathComponent ("module_cache"); SetModuleCacheDirectory (module_cache_dir); } bool PlatformProperties::GetUseModuleCache () const { const auto idx = ePropertyUseModuleCache; return m_collection_sp->GetPropertyAtIndexAsBoolean ( nullptr, idx, g_properties[idx].default_uint_value != 0); } bool PlatformProperties::SetUseModuleCache (bool use_module_cache) { return m_collection_sp->SetPropertyAtIndexAsBoolean (nullptr, ePropertyUseModuleCache, use_module_cache); } FileSpec PlatformProperties::GetModuleCacheDirectory () const { return m_collection_sp->GetPropertyAtIndexAsFileSpec (nullptr, ePropertyModuleCacheDirectory); } bool PlatformProperties::SetModuleCacheDirectory (const FileSpec& dir_spec) { return m_collection_sp->SetPropertyAtIndexAsFileSpec (nullptr, ePropertyModuleCacheDirectory, dir_spec); } //------------------------------------------------------------------ /// Get the native host platform plug-in. /// /// There should only be one of these for each host that LLDB runs /// upon that should be statically compiled in and registered using /// preprocessor macros or other similar build mechanisms. /// /// This platform will be used as the default platform when launching /// or attaching to processes unless another platform is specified. //------------------------------------------------------------------ PlatformSP Platform::GetHostPlatform () { return GetHostPlatformSP (); } static std::vector & GetPlatformList() { static std::vector g_platform_list; return g_platform_list; } static std::recursive_mutex & GetPlatformListMutex() { static std::recursive_mutex g_mutex; return g_mutex; } void Platform::Initialize () { g_initialize_count++; } void Platform::Terminate () { if (g_initialize_count > 0) { if (--g_initialize_count == 0) { std::lock_guard guard(GetPlatformListMutex()); GetPlatformList().clear(); } } } const PlatformPropertiesSP & Platform::GetGlobalPlatformProperties () { static const auto g_settings_sp (std::make_shared ()); return g_settings_sp; } void Platform::SetHostPlatform (const lldb::PlatformSP &platform_sp) { // The native platform should use its static void Platform::Initialize() // function to register itself as the native platform. GetHostPlatformSP () = platform_sp; if (platform_sp) { std::lock_guard guard(GetPlatformListMutex()); GetPlatformList().push_back(platform_sp); } } Error Platform::GetFileWithUUID (const FileSpec &platform_file, const UUID *uuid_ptr, FileSpec &local_file) { // Default to the local case local_file = platform_file; return Error(); } FileSpecList Platform::LocateExecutableScriptingResources (Target *target, Module &module, Stream* feedback_stream) { return FileSpecList(); } //PlatformSP //Platform::FindPlugin (Process *process, const ConstString &plugin_name) //{ // PlatformCreateInstance create_callback = nullptr; // if (plugin_name) // { // create_callback = PluginManager::GetPlatformCreateCallbackForPluginName (plugin_name); // if (create_callback) // { // ArchSpec arch; // if (process) // { // arch = process->GetTarget().GetArchitecture(); // } // PlatformSP platform_sp(create_callback(process, &arch)); // if (platform_sp) // return platform_sp; // } // } // else // { // for (uint32_t idx = 0; (create_callback = PluginManager::GetPlatformCreateCallbackAtIndex(idx)) != nullptr; ++idx) // { // PlatformSP platform_sp(create_callback(process, nullptr)); // if (platform_sp) // return platform_sp; // } // } // return PlatformSP(); //} Error Platform::GetSharedModule (const ModuleSpec &module_spec, Process* process, ModuleSP &module_sp, const FileSpecList *module_search_paths_ptr, ModuleSP *old_module_sp_ptr, bool *did_create_ptr) { if (IsHost ()) return ModuleList::GetSharedModule (module_spec, module_sp, module_search_paths_ptr, old_module_sp_ptr, did_create_ptr, false); return GetRemoteSharedModule (module_spec, process, module_sp, [&](const ModuleSpec &spec) { Error error = ModuleList::GetSharedModule ( spec, module_sp, module_search_paths_ptr, old_module_sp_ptr, did_create_ptr, false); if (error.Success() && module_sp) module_sp->SetPlatformFileSpec(spec.GetFileSpec()); return error; }, did_create_ptr); } bool Platform::GetModuleSpec (const FileSpec& module_file_spec, const ArchSpec& arch, ModuleSpec &module_spec) { ModuleSpecList module_specs; if (ObjectFile::GetModuleSpecifications (module_file_spec, 0, 0, module_specs) == 0) return false; ModuleSpec matched_module_spec; return module_specs.FindMatchingModuleSpec (ModuleSpec (module_file_spec, arch), module_spec); } PlatformSP Platform::Find (const ConstString &name) { if (name) { static ConstString g_host_platform_name ("host"); if (name == g_host_platform_name) return GetHostPlatform(); std::lock_guard guard(GetPlatformListMutex()); for (const auto &platform_sp : GetPlatformList()) { if (platform_sp->GetName() == name) return platform_sp; } } return PlatformSP(); } PlatformSP Platform::Create (const ConstString &name, Error &error) { PlatformCreateInstance create_callback = nullptr; lldb::PlatformSP platform_sp; if (name) { static ConstString g_host_platform_name ("host"); if (name == g_host_platform_name) return GetHostPlatform(); create_callback = PluginManager::GetPlatformCreateCallbackForPluginName (name); if (create_callback) platform_sp = create_callback(true, nullptr); else error.SetErrorStringWithFormat ("unable to find a plug-in for the platform named \"%s\"", name.GetCString()); } else error.SetErrorString ("invalid platform name"); if (platform_sp) { std::lock_guard guard(GetPlatformListMutex()); GetPlatformList().push_back(platform_sp); } return platform_sp; } PlatformSP Platform::Create (const ArchSpec &arch, ArchSpec *platform_arch_ptr, Error &error) { lldb::PlatformSP platform_sp; if (arch.IsValid()) { // Scope for locker { // First try exact arch matches across all platforms already created std::lock_guard guard(GetPlatformListMutex()); for (const auto &platform_sp : GetPlatformList()) { if (platform_sp->IsCompatibleArchitecture(arch, true, platform_arch_ptr)) return platform_sp; } // Next try compatible arch matches across all platforms already created for (const auto &platform_sp : GetPlatformList()) { if (platform_sp->IsCompatibleArchitecture(arch, false, platform_arch_ptr)) return platform_sp; } } PlatformCreateInstance create_callback; // First try exact arch matches across all platform plug-ins uint32_t idx; for (idx = 0; (create_callback = PluginManager::GetPlatformCreateCallbackAtIndex (idx)); ++idx) { if (create_callback) { platform_sp = create_callback(false, &arch); if (platform_sp && platform_sp->IsCompatibleArchitecture(arch, true, platform_arch_ptr)) { std::lock_guard guard(GetPlatformListMutex()); GetPlatformList().push_back(platform_sp); return platform_sp; } } } // Next try compatible arch matches across all platform plug-ins for (idx = 0; (create_callback = PluginManager::GetPlatformCreateCallbackAtIndex (idx)); ++idx) { if (create_callback) { platform_sp = create_callback(false, &arch); if (platform_sp && platform_sp->IsCompatibleArchitecture(arch, false, platform_arch_ptr)) { std::lock_guard guard(GetPlatformListMutex()); GetPlatformList().push_back(platform_sp); return platform_sp; } } } } else error.SetErrorString ("invalid platform name"); if (platform_arch_ptr) platform_arch_ptr->Clear(); platform_sp.reset(); return platform_sp; } //------------------------------------------------------------------ /// Default Constructor //------------------------------------------------------------------ Platform::Platform(bool is_host) : m_is_host(is_host), m_os_version_set_while_connected(false), m_system_arch_set_while_connected(false), m_sdk_sysroot(), m_sdk_build(), m_working_dir(), m_remote_url(), m_name(), m_major_os_version(UINT32_MAX), m_minor_os_version(UINT32_MAX), m_update_os_version(UINT32_MAX), m_system_arch(), m_mutex(), m_uid_map(), m_gid_map(), m_max_uid_name_len(0), m_max_gid_name_len(0), m_supports_rsync(false), m_rsync_opts(), m_rsync_prefix(), m_supports_ssh(false), m_ssh_opts(), m_ignores_remote_hostname(false), m_trap_handlers(), m_calculated_trap_handlers(false), m_module_cache(llvm::make_unique()) { Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); if (log) log->Printf("%p Platform::Platform()", static_cast(this)); } //------------------------------------------------------------------ /// Destructor. /// /// The destructor is virtual since this class is designed to be /// inherited from by the plug-in instance. //------------------------------------------------------------------ Platform::~Platform() { Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); if (log) log->Printf ("%p Platform::~Platform()", static_cast(this)); } void Platform::GetStatus (Stream &strm) { uint32_t major = UINT32_MAX; uint32_t minor = UINT32_MAX; uint32_t update = UINT32_MAX; std::string s; strm.Printf (" Platform: %s\n", GetPluginName().GetCString()); ArchSpec arch (GetSystemArchitecture()); if (arch.IsValid()) { if (!arch.GetTriple().str().empty()) { strm.Printf(" Triple: "); arch.DumpTriple(strm); strm.EOL(); } } if (GetOSVersion(major, minor, update)) { strm.Printf("OS Version: %u", major); if (minor != UINT32_MAX) strm.Printf(".%u", minor); if (update != UINT32_MAX) strm.Printf(".%u", update); if (GetOSBuildString (s)) strm.Printf(" (%s)", s.c_str()); strm.EOL(); } if (GetOSKernelDescription (s)) strm.Printf(" Kernel: %s\n", s.c_str()); if (IsHost()) { strm.Printf(" Hostname: %s\n", GetHostname()); } else { const bool is_connected = IsConnected(); if (is_connected) strm.Printf(" Hostname: %s\n", GetHostname()); strm.Printf(" Connected: %s\n", is_connected ? "yes" : "no"); } if (GetWorkingDirectory()) { strm.Printf("WorkingDir: %s\n", GetWorkingDirectory().GetCString()); } if (!IsConnected()) return; std::string specific_info(GetPlatformSpecificConnectionInformation()); if (!specific_info.empty()) strm.Printf("Platform-specific connection: %s\n", specific_info.c_str()); } bool Platform::GetOSVersion (uint32_t &major, uint32_t &minor, uint32_t &update, Process *process) { std::lock_guard guard(m_mutex); bool success = m_major_os_version != UINT32_MAX; if (IsHost()) { if (!success) { // We have a local host platform success = HostInfo::GetOSVersion(m_major_os_version, m_minor_os_version, m_update_os_version); m_os_version_set_while_connected = success; } } else { // We have a remote platform. We can only fetch the remote // OS version if we are connected, and we don't want to do it // more than once. const bool is_connected = IsConnected(); bool fetch = false; if (success) { // We have valid OS version info, check to make sure it wasn't // manually set prior to connecting. If it was manually set prior // to connecting, then lets fetch the actual OS version info // if we are now connected. if (is_connected && !m_os_version_set_while_connected) fetch = true; } else { // We don't have valid OS version info, fetch it if we are connected fetch = is_connected; } if (fetch) { success = GetRemoteOSVersion (); m_os_version_set_while_connected = success; } } if (success) { major = m_major_os_version; minor = m_minor_os_version; update = m_update_os_version; } else if (process) { // Check with the process in case it can answer the question if // a process was provided return process->GetHostOSVersion(major, minor, update); } return success; } bool Platform::GetOSBuildString (std::string &s) { s.clear(); if (IsHost()) #if !defined(__linux__) return HostInfo::GetOSBuildString(s); #else return false; #endif else return GetRemoteOSBuildString (s); } bool Platform::GetOSKernelDescription (std::string &s) { if (IsHost()) #if !defined(__linux__) return HostInfo::GetOSKernelDescription(s); #else return false; #endif else return GetRemoteOSKernelDescription (s); } void Platform::AddClangModuleCompilationOptions (Target *target, std::vector &options) { std::vector default_compilation_options = { "-x", "c++", "-Xclang", "-nostdsysteminc", "-Xclang", "-nostdsysteminc" }; options.insert(options.end(), default_compilation_options.begin(), default_compilation_options.end()); } FileSpec Platform::GetWorkingDirectory () { if (IsHost()) { char cwd[PATH_MAX]; if (getcwd(cwd, sizeof(cwd))) return FileSpec{cwd, true}; else return FileSpec{}; } else { if (!m_working_dir) m_working_dir = GetRemoteWorkingDirectory(); return m_working_dir; } } struct RecurseCopyBaton { const FileSpec& dst; Platform *platform_ptr; Error error; }; static FileSpec::EnumerateDirectoryResult RecurseCopy_Callback (void *baton, FileSpec::FileType file_type, const FileSpec &src) { RecurseCopyBaton* rc_baton = (RecurseCopyBaton*)baton; switch (file_type) { case FileSpec::eFileTypePipe: case FileSpec::eFileTypeSocket: // we have no way to copy pipes and sockets - ignore them and continue return FileSpec::eEnumerateDirectoryResultNext; break; case FileSpec::eFileTypeDirectory: { // make the new directory and get in there FileSpec dst_dir = rc_baton->dst; if (!dst_dir.GetFilename()) dst_dir.GetFilename() = src.GetLastPathComponent(); Error error = rc_baton->platform_ptr->MakeDirectory(dst_dir, lldb::eFilePermissionsDirectoryDefault); if (error.Fail()) { rc_baton->error.SetErrorStringWithFormat("unable to setup directory %s on remote end", dst_dir.GetCString()); return FileSpec::eEnumerateDirectoryResultQuit; // got an error, bail out } // now recurse std::string src_dir_path (src.GetPath()); // Make a filespec that only fills in the directory of a FileSpec so // when we enumerate we can quickly fill in the filename for dst copies FileSpec recurse_dst; recurse_dst.GetDirectory().SetCString(dst_dir.GetPath().c_str()); RecurseCopyBaton rc_baton2 = { recurse_dst, rc_baton->platform_ptr, Error() }; FileSpec::EnumerateDirectory(src_dir_path.c_str(), true, true, true, RecurseCopy_Callback, &rc_baton2); if (rc_baton2.error.Fail()) { rc_baton->error.SetErrorString(rc_baton2.error.AsCString()); return FileSpec::eEnumerateDirectoryResultQuit; // got an error, bail out } return FileSpec::eEnumerateDirectoryResultNext; } break; case FileSpec::eFileTypeSymbolicLink: { // copy the file and keep going FileSpec dst_file = rc_baton->dst; if (!dst_file.GetFilename()) dst_file.GetFilename() = src.GetFilename(); FileSpec src_resolved; rc_baton->error = FileSystem::Readlink(src, src_resolved); if (rc_baton->error.Fail()) return FileSpec::eEnumerateDirectoryResultQuit; // got an error, bail out rc_baton->error = rc_baton->platform_ptr->CreateSymlink(dst_file, src_resolved); if (rc_baton->error.Fail()) return FileSpec::eEnumerateDirectoryResultQuit; // got an error, bail out return FileSpec::eEnumerateDirectoryResultNext; } break; case FileSpec::eFileTypeRegular: { // copy the file and keep going FileSpec dst_file = rc_baton->dst; if (!dst_file.GetFilename()) dst_file.GetFilename() = src.GetFilename(); Error err = rc_baton->platform_ptr->PutFile(src, dst_file); if (err.Fail()) { rc_baton->error.SetErrorString(err.AsCString()); return FileSpec::eEnumerateDirectoryResultQuit; // got an error, bail out } return FileSpec::eEnumerateDirectoryResultNext; } break; case FileSpec::eFileTypeInvalid: case FileSpec::eFileTypeOther: case FileSpec::eFileTypeUnknown: rc_baton->error.SetErrorStringWithFormat("invalid file detected during copy: %s", src.GetPath().c_str()); return FileSpec::eEnumerateDirectoryResultQuit; // got an error, bail out break; } llvm_unreachable("Unhandled FileSpec::FileType!"); } Error Platform::Install (const FileSpec& src, const FileSpec& dst) { Error error; Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf ("Platform::Install (src='%s', dst='%s')", src.GetPath().c_str(), dst.GetPath().c_str()); FileSpec fixed_dst(dst); if (!fixed_dst.GetFilename()) fixed_dst.GetFilename() = src.GetFilename(); FileSpec working_dir = GetWorkingDirectory(); if (dst) { if (dst.GetDirectory()) { const char first_dst_dir_char = dst.GetDirectory().GetCString()[0]; if (first_dst_dir_char == '/' || first_dst_dir_char == '\\') { fixed_dst.GetDirectory() = dst.GetDirectory(); } // If the fixed destination file doesn't have a directory yet, // then we must have a relative path. We will resolve this relative // path against the platform's working directory if (!fixed_dst.GetDirectory()) { FileSpec relative_spec; std::string path; if (working_dir) { relative_spec = working_dir; relative_spec.AppendPathComponent(dst.GetPath()); fixed_dst.GetDirectory() = relative_spec.GetDirectory(); } else { error.SetErrorStringWithFormat("platform working directory must be valid for relative path '%s'", dst.GetPath().c_str()); return error; } } } else { if (working_dir) { fixed_dst.GetDirectory().SetCString(working_dir.GetCString()); } else { error.SetErrorStringWithFormat("platform working directory must be valid for relative path '%s'", dst.GetPath().c_str()); return error; } } } else { if (working_dir) { fixed_dst.GetDirectory().SetCString(working_dir.GetCString()); } else { error.SetErrorStringWithFormat("platform working directory must be valid when destination directory is empty"); return error; } } if (log) log->Printf ("Platform::Install (src='%s', dst='%s') fixed_dst='%s'", src.GetPath().c_str(), dst.GetPath().c_str(), fixed_dst.GetPath().c_str()); if (GetSupportsRSync()) { error = PutFile(src, dst); } else { switch (src.GetFileType()) { case FileSpec::eFileTypeDirectory: { if (GetFileExists (fixed_dst)) Unlink(fixed_dst); uint32_t permissions = src.GetPermissions(); if (permissions == 0) permissions = eFilePermissionsDirectoryDefault; error = MakeDirectory(fixed_dst, permissions); if (error.Success()) { // Make a filespec that only fills in the directory of a FileSpec so // when we enumerate we can quickly fill in the filename for dst copies FileSpec recurse_dst; recurse_dst.GetDirectory().SetCString(fixed_dst.GetCString()); std::string src_dir_path (src.GetPath()); RecurseCopyBaton baton = { recurse_dst, this, Error() }; FileSpec::EnumerateDirectory(src_dir_path.c_str(), true, true, true, RecurseCopy_Callback, &baton); return baton.error; } } break; case FileSpec::eFileTypeRegular: if (GetFileExists (fixed_dst)) Unlink(fixed_dst); error = PutFile(src, fixed_dst); break; case FileSpec::eFileTypeSymbolicLink: { if (GetFileExists (fixed_dst)) Unlink(fixed_dst); FileSpec src_resolved; error = FileSystem::Readlink(src, src_resolved); if (error.Success()) error = CreateSymlink(dst, src_resolved); } break; case FileSpec::eFileTypePipe: error.SetErrorString("platform install doesn't handle pipes"); break; case FileSpec::eFileTypeSocket: error.SetErrorString("platform install doesn't handle sockets"); break; case FileSpec::eFileTypeInvalid: case FileSpec::eFileTypeUnknown: case FileSpec::eFileTypeOther: error.SetErrorString("platform install doesn't handle non file or directory items"); break; } } return error; } bool Platform::SetWorkingDirectory(const FileSpec &file_spec) { if (IsHost()) { Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("Platform::SetWorkingDirectory('%s')", file_spec.GetCString()); if (file_spec) { if (::chdir(file_spec.GetCString()) == 0) return true; } return false; } else { m_working_dir.Clear(); return SetRemoteWorkingDirectory(file_spec); } } Error Platform::MakeDirectory(const FileSpec &file_spec, uint32_t permissions) { if (IsHost()) return FileSystem::MakeDirectory(file_spec, permissions); else { Error error; error.SetErrorStringWithFormat("remote platform %s doesn't support %s", GetPluginName().GetCString(), __PRETTY_FUNCTION__); return error; } } Error Platform::GetFilePermissions(const FileSpec &file_spec, uint32_t &file_permissions) { if (IsHost()) return FileSystem::GetFilePermissions(file_spec, file_permissions); else { Error error; error.SetErrorStringWithFormat("remote platform %s doesn't support %s", GetPluginName().GetCString(), __PRETTY_FUNCTION__); return error; } } Error Platform::SetFilePermissions(const FileSpec &file_spec, uint32_t file_permissions) { if (IsHost()) return FileSystem::SetFilePermissions(file_spec, file_permissions); else { Error error; error.SetErrorStringWithFormat("remote platform %s doesn't support %s", GetPluginName().GetCString(), __PRETTY_FUNCTION__); return error; } } ConstString Platform::GetName () { return GetPluginName(); } const char * Platform::GetHostname () { if (IsHost()) return "127.0.0.1"; if (m_name.empty()) return nullptr; return m_name.c_str(); } ConstString Platform::GetFullNameForDylib (ConstString basename) { return basename; } bool Platform::SetRemoteWorkingDirectory(const FileSpec &working_dir) { Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("Platform::SetRemoteWorkingDirectory('%s')", working_dir.GetCString()); m_working_dir = working_dir; return true; } const char * Platform::GetUserName (uint32_t uid) { #if !defined(LLDB_DISABLE_POSIX) const char *user_name = GetCachedUserName(uid); if (user_name) return user_name; if (IsHost()) { std::string name; if (HostInfo::LookupUserName(uid, name)) return SetCachedUserName (uid, name.c_str(), name.size()); } #endif return nullptr; } const char * Platform::GetGroupName (uint32_t gid) { #if !defined(LLDB_DISABLE_POSIX) const char *group_name = GetCachedGroupName(gid); if (group_name) return group_name; if (IsHost()) { std::string name; if (HostInfo::LookupGroupName(gid, name)) return SetCachedGroupName (gid, name.c_str(), name.size()); } #endif return nullptr; } bool Platform::SetOSVersion (uint32_t major, uint32_t minor, uint32_t update) { if (IsHost()) { // We don't need anyone setting the OS version for the host platform, // we should be able to figure it out by calling HostInfo::GetOSVersion(...). return false; } else { // We have a remote platform, allow setting the target OS version if // we aren't connected, since if we are connected, we should be able to // request the remote OS version from the connected platform. if (IsConnected()) return false; else { // We aren't connected and we might want to set the OS version // ahead of time before we connect so we can peruse files and // use a local SDK or PDK cache of support files to disassemble // or do other things. m_major_os_version = major; m_minor_os_version = minor; m_update_os_version = update; return true; } } return false; } Error Platform::ResolveExecutable (const ModuleSpec &module_spec, lldb::ModuleSP &exe_module_sp, const FileSpecList *module_search_paths_ptr) { Error error; if (module_spec.GetFileSpec().Exists()) { if (module_spec.GetArchitecture().IsValid()) { error = ModuleList::GetSharedModule(module_spec, exe_module_sp, module_search_paths_ptr, nullptr, nullptr); } else { // No valid architecture was specified, ask the platform for // the architectures that we should be using (in the correct order) // and see if we can find a match that way ModuleSpec arch_module_spec(module_spec); for (uint32_t idx = 0; GetSupportedArchitectureAtIndex (idx, arch_module_spec.GetArchitecture()); ++idx) { error = ModuleList::GetSharedModule(arch_module_spec, exe_module_sp, module_search_paths_ptr, nullptr, nullptr); // Did we find an executable using one of the if (error.Success() && exe_module_sp) break; } } } else { error.SetErrorStringWithFormat ("'%s' does not exist", module_spec.GetFileSpec().GetPath().c_str()); } return error; } Error Platform::ResolveSymbolFile (Target &target, const ModuleSpec &sym_spec, FileSpec &sym_file) { Error error; if (sym_spec.GetSymbolFileSpec().Exists()) sym_file = sym_spec.GetSymbolFileSpec(); else error.SetErrorString("unable to resolve symbol file"); return error; } bool Platform::ResolveRemotePath (const FileSpec &platform_path, FileSpec &resolved_platform_path) { resolved_platform_path = platform_path; return resolved_platform_path.ResolvePath(); } const ArchSpec & Platform::GetSystemArchitecture() { if (IsHost()) { if (!m_system_arch.IsValid()) { // We have a local host platform m_system_arch = HostInfo::GetArchitecture(); m_system_arch_set_while_connected = m_system_arch.IsValid(); } } else { // We have a remote platform. We can only fetch the remote // system architecture if we are connected, and we don't want to do it // more than once. const bool is_connected = IsConnected(); bool fetch = false; if (m_system_arch.IsValid()) { // We have valid OS version info, check to make sure it wasn't // manually set prior to connecting. If it was manually set prior // to connecting, then lets fetch the actual OS version info // if we are now connected. if (is_connected && !m_system_arch_set_while_connected) fetch = true; } else { // We don't have valid OS version info, fetch it if we are connected fetch = is_connected; } if (fetch) { m_system_arch = GetRemoteSystemArchitecture (); m_system_arch_set_while_connected = m_system_arch.IsValid(); } } return m_system_arch; } Error Platform::ConnectRemote (Args& args) { Error error; if (IsHost()) error.SetErrorStringWithFormat ("The currently selected platform (%s) is the host platform and is always connected.", GetPluginName().GetCString()); else error.SetErrorStringWithFormat ("Platform::ConnectRemote() is not supported by %s", GetPluginName().GetCString()); return error; } Error Platform::DisconnectRemote () { Error error; if (IsHost()) error.SetErrorStringWithFormat ("The currently selected platform (%s) is the host platform and is always connected.", GetPluginName().GetCString()); else error.SetErrorStringWithFormat ("Platform::DisconnectRemote() is not supported by %s", GetPluginName().GetCString()); return error; } bool Platform::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info) { // Take care of the host case so that each subclass can just // call this function to get the host functionality. if (IsHost()) return Host::GetProcessInfo (pid, process_info); return false; } uint32_t Platform::FindProcesses (const ProcessInstanceInfoMatch &match_info, ProcessInstanceInfoList &process_infos) { // Take care of the host case so that each subclass can just // call this function to get the host functionality. uint32_t match_count = 0; if (IsHost()) match_count = Host::FindProcesses (match_info, process_infos); return match_count; } Error Platform::LaunchProcess (ProcessLaunchInfo &launch_info) { Error error; Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM)); if (log) log->Printf ("Platform::%s()", __FUNCTION__); // Take care of the host case so that each subclass can just // call this function to get the host functionality. if (IsHost()) { if (::getenv ("LLDB_LAUNCH_FLAG_LAUNCH_IN_TTY")) launch_info.GetFlags().Set (eLaunchFlagLaunchInTTY); if (launch_info.GetFlags().Test (eLaunchFlagLaunchInShell)) { const bool is_localhost = true; const bool will_debug = launch_info.GetFlags().Test(eLaunchFlagDebug); const bool first_arg_is_full_shell_command = false; uint32_t num_resumes = GetResumeCountForLaunchInfo (launch_info); if (log) { const FileSpec &shell = launch_info.GetShell(); const char *shell_str = (shell) ? shell.GetPath().c_str() : ""; log->Printf ("Platform::%s GetResumeCountForLaunchInfo() returned %" PRIu32 ", shell is '%s'", __FUNCTION__, num_resumes, shell_str); } if (!launch_info.ConvertArgumentsForLaunchingInShell (error, is_localhost, will_debug, first_arg_is_full_shell_command, num_resumes)) return error; } else if (launch_info.GetFlags().Test(eLaunchFlagShellExpandArguments)) { error = ShellExpandArguments(launch_info); if (error.Fail()) { error.SetErrorStringWithFormat("shell expansion failed (reason: %s). consider launching with 'process launch'.", error.AsCString("unknown")); return error; } } if (log) log->Printf ("Platform::%s final launch_info resume count: %" PRIu32, __FUNCTION__, launch_info.GetResumeCount ()); error = Host::LaunchProcess (launch_info); } else error.SetErrorString ("base lldb_private::Platform class can't launch remote processes"); return error; } Error Platform::ShellExpandArguments (ProcessLaunchInfo &launch_info) { if (IsHost()) return Host::ShellExpandArguments(launch_info); return Error("base lldb_private::Platform class can't expand arguments"); } Error Platform::KillProcess (const lldb::pid_t pid) { Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM)); if (log) log->Printf ("Platform::%s, pid %" PRIu64, __FUNCTION__, pid); // Try to find a process plugin to handle this Kill request. If we can't, fall back to // the default OS implementation. size_t num_debuggers = Debugger::GetNumDebuggers(); for (size_t didx = 0; didx < num_debuggers; ++didx) { DebuggerSP debugger = Debugger::GetDebuggerAtIndex(didx); lldb_private::TargetList &targets = debugger->GetTargetList(); for (int tidx = 0; tidx < targets.GetNumTargets(); ++tidx) { ProcessSP process = targets.GetTargetAtIndex(tidx)->GetProcessSP(); if (process->GetID() == pid) return process->Destroy(true); } } if (!IsHost()) { return Error("base lldb_private::Platform class can't kill remote processes unless " "they are controlled by a process plugin"); } Host::Kill(pid, SIGTERM); return Error(); } lldb::ProcessSP Platform::DebugProcess (ProcessLaunchInfo &launch_info, Debugger &debugger, Target *target, // Can be nullptr, if nullptr create a new target, else use existing one Error &error) { Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM)); if (log) log->Printf ("Platform::%s entered (target %p)", __FUNCTION__, static_cast(target)); ProcessSP process_sp; // Make sure we stop at the entry point launch_info.GetFlags ().Set (eLaunchFlagDebug); // We always launch the process we are going to debug in a separate process // group, since then we can handle ^C interrupts ourselves w/o having to worry // about the target getting them as well. launch_info.SetLaunchInSeparateProcessGroup(true); error = LaunchProcess (launch_info); if (error.Success()) { if (log) log->Printf ("Platform::%s LaunchProcess() call succeeded (pid=%" PRIu64 ")", __FUNCTION__, launch_info.GetProcessID ()); if (launch_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) { ProcessAttachInfo attach_info (launch_info); process_sp = Attach (attach_info, debugger, target, error); if (process_sp) { if (log) log->Printf ("Platform::%s Attach() succeeded, Process plugin: %s", __FUNCTION__, process_sp->GetPluginName ().AsCString ()); launch_info.SetHijackListener(attach_info.GetHijackListener()); // Since we attached to the process, it will think it needs to detach // if the process object just goes away without an explicit call to // Process::Kill() or Process::Detach(), so let it know to kill the // process if this happens. process_sp->SetShouldDetach (false); // If we didn't have any file actions, the pseudo terminal might // have been used where the slave side was given as the file to // open for stdin/out/err after we have already opened the master // so we can read/write stdin/out/err. int pty_fd = launch_info.GetPTY().ReleaseMasterFileDescriptor(); if (pty_fd != lldb_utility::PseudoTerminal::invalid_fd) { process_sp->SetSTDIOFileDescriptor(pty_fd); } } else { if (log) log->Printf ("Platform::%s Attach() failed: %s", __FUNCTION__, error.AsCString ()); } } else { if (log) log->Printf ("Platform::%s LaunchProcess() returned launch_info with invalid process id", __FUNCTION__); } } else { if (log) log->Printf ("Platform::%s LaunchProcess() failed: %s", __FUNCTION__, error.AsCString ()); } return process_sp; } lldb::PlatformSP Platform::GetPlatformForArchitecture (const ArchSpec &arch, ArchSpec *platform_arch_ptr) { lldb::PlatformSP platform_sp; Error error; if (arch.IsValid()) platform_sp = Platform::Create (arch, platform_arch_ptr, error); return platform_sp; } //------------------------------------------------------------------ /// Lets a platform answer if it is compatible with a given /// architecture and the target triple contained within. //------------------------------------------------------------------ bool Platform::IsCompatibleArchitecture (const ArchSpec &arch, bool exact_arch_match, ArchSpec *compatible_arch_ptr) { // If the architecture is invalid, we must answer true... if (arch.IsValid()) { ArchSpec platform_arch; // Try for an exact architecture match first. if (exact_arch_match) { for (uint32_t arch_idx=0; GetSupportedArchitectureAtIndex (arch_idx, platform_arch); ++arch_idx) { if (arch.IsExactMatch(platform_arch)) { if (compatible_arch_ptr) *compatible_arch_ptr = platform_arch; return true; } } } else { for (uint32_t arch_idx=0; GetSupportedArchitectureAtIndex (arch_idx, platform_arch); ++arch_idx) { if (arch.IsCompatibleMatch(platform_arch)) { if (compatible_arch_ptr) *compatible_arch_ptr = platform_arch; return true; } } } } if (compatible_arch_ptr) compatible_arch_ptr->Clear(); return false; } Error Platform::PutFile (const FileSpec& source, const FileSpec& destination, uint32_t uid, uint32_t gid) { Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM)); if (log) log->Printf("[PutFile] Using block by block transfer....\n"); uint32_t source_open_options = File::eOpenOptionRead | File::eOpenOptionCloseOnExec; if (source.GetFileType() == FileSpec::eFileTypeSymbolicLink) source_open_options |= File::eOpenOptionDontFollowSymlinks; File source_file(source, source_open_options, lldb::eFilePermissionsUserRW); Error error; uint32_t permissions = source_file.GetPermissions(error); if (permissions == 0) permissions = lldb::eFilePermissionsFileDefault; if (!source_file.IsValid()) return Error("PutFile: unable to open source file"); lldb::user_id_t dest_file = OpenFile (destination, File::eOpenOptionCanCreate | File::eOpenOptionWrite | File::eOpenOptionTruncate | File::eOpenOptionCloseOnExec, permissions, error); if (log) log->Printf ("dest_file = %" PRIu64 "\n", dest_file); if (error.Fail()) return error; if (dest_file == UINT64_MAX) return Error("unable to open target file"); lldb::DataBufferSP buffer_sp(new DataBufferHeap(1024, 0)); uint64_t offset = 0; for (;;) { size_t bytes_read = buffer_sp->GetByteSize(); error = source_file.Read(buffer_sp->GetBytes(), bytes_read); if (error.Fail() || bytes_read == 0) break; const uint64_t bytes_written = WriteFile(dest_file, offset, buffer_sp->GetBytes(), bytes_read, error); if (error.Fail()) break; offset += bytes_written; if (bytes_written != bytes_read) { // We didn't write the correct number of bytes, so adjust // the file position in the source file we are reading from... source_file.SeekFromStart(offset); } } CloseFile(dest_file, error); if (uid == UINT32_MAX && gid == UINT32_MAX) return error; // TODO: ChownFile? return error; } Error Platform::GetFile(const FileSpec &source, const FileSpec &destination) { Error error("unimplemented"); return error; } Error Platform::CreateSymlink(const FileSpec &src, // The name of the link is in src const FileSpec &dst) // The symlink points to dst { Error error("unimplemented"); return error; } bool Platform::GetFileExists(const lldb_private::FileSpec &file_spec) { return false; } Error Platform::Unlink(const FileSpec &path) { Error error("unimplemented"); return error; } uint64_t Platform::ConvertMmapFlagsToPlatform(const ArchSpec &arch, unsigned flags) { uint64_t flags_platform = 0; if (flags & eMmapFlagsPrivate) flags_platform |= MAP_PRIVATE; if (flags & eMmapFlagsAnon) flags_platform |= MAP_ANON; return flags_platform; } lldb_private::Error Platform::RunShellCommand(const char *command, // Shouldn't be nullptr const FileSpec &working_dir, // Pass empty FileSpec to use the current working directory int *status_ptr, // Pass nullptr if you don't want the process exit status int *signo_ptr, // Pass nullptr if you don't want the signal that caused the process to exit std::string *command_output, // Pass nullptr if you don't want the command output uint32_t timeout_sec) // Timeout in seconds to wait for shell program to finish { if (IsHost()) return Host::RunShellCommand (command, working_dir, status_ptr, signo_ptr, command_output, timeout_sec); else return Error("unimplemented"); } bool Platform::CalculateMD5 (const FileSpec& file_spec, uint64_t &low, uint64_t &high) { if (IsHost()) return FileSystem::CalculateMD5(file_spec, low, high); else return false; } void Platform::SetLocalCacheDirectory (const char* local) { m_local_cache_directory.assign(local); } const char* Platform::GetLocalCacheDirectory () { return m_local_cache_directory.c_str(); } static OptionDefinition g_rsync_option_table[] = { { LLDB_OPT_SET_ALL, false, "rsync" , 'r', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone , "Enable rsync." }, { LLDB_OPT_SET_ALL, false, "rsync-opts" , 'R', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeCommandName , "Platform-specific options required for rsync to work." }, { LLDB_OPT_SET_ALL, false, "rsync-prefix" , 'P', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeCommandName , "Platform-specific rsync prefix put before the remote path." }, { LLDB_OPT_SET_ALL, false, "ignore-remote-hostname" , 'i', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone , "Do not automatically fill in the remote hostname when composing the rsync command." }, }; static OptionDefinition g_ssh_option_table[] = { { LLDB_OPT_SET_ALL, false, "ssh" , 's', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone , "Enable SSH." }, { LLDB_OPT_SET_ALL, false, "ssh-opts" , 'S', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeCommandName , "Platform-specific options required for SSH to work." }, }; static OptionDefinition g_caching_option_table[] = { { LLDB_OPT_SET_ALL, false, "local-cache-dir" , 'c', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypePath , "Path in which to store local copies of files." }, }; const lldb_private::OptionDefinition* OptionGroupPlatformRSync::GetDefinitions () { return g_rsync_option_table; } void OptionGroupPlatformRSync::OptionParsingStarting (CommandInterpreter &interpreter) { m_rsync = false; m_rsync_opts.clear(); m_rsync_prefix.clear(); m_ignores_remote_hostname = false; } lldb_private::Error OptionGroupPlatformRSync::SetOptionValue (CommandInterpreter &interpreter, uint32_t option_idx, const char *option_arg) { Error error; char short_option = (char) GetDefinitions()[option_idx].short_option; switch (short_option) { case 'r': m_rsync = true; break; case 'R': m_rsync_opts.assign(option_arg); break; case 'P': m_rsync_prefix.assign(option_arg); break; case 'i': m_ignores_remote_hostname = true; break; default: error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); break; } return error; } uint32_t OptionGroupPlatformRSync::GetNumDefinitions () { return llvm::array_lengthof(g_rsync_option_table); } lldb::BreakpointSP Platform::SetThreadCreationBreakpoint (lldb_private::Target &target) { return lldb::BreakpointSP(); } const lldb_private::OptionDefinition* OptionGroupPlatformSSH::GetDefinitions () { return g_ssh_option_table; } void OptionGroupPlatformSSH::OptionParsingStarting (CommandInterpreter &interpreter) { m_ssh = false; m_ssh_opts.clear(); } lldb_private::Error OptionGroupPlatformSSH::SetOptionValue (CommandInterpreter &interpreter, uint32_t option_idx, const char *option_arg) { Error error; char short_option = (char) GetDefinitions()[option_idx].short_option; switch (short_option) { case 's': m_ssh = true; break; case 'S': m_ssh_opts.assign(option_arg); break; default: error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); break; } return error; } uint32_t OptionGroupPlatformSSH::GetNumDefinitions () { return llvm::array_lengthof(g_ssh_option_table); } const lldb_private::OptionDefinition* OptionGroupPlatformCaching::GetDefinitions () { return g_caching_option_table; } void OptionGroupPlatformCaching::OptionParsingStarting (CommandInterpreter &interpreter) { m_cache_dir.clear(); } lldb_private::Error OptionGroupPlatformCaching::SetOptionValue (CommandInterpreter &interpreter, uint32_t option_idx, const char *option_arg) { Error error; char short_option = (char) GetDefinitions()[option_idx].short_option; switch (short_option) { case 'c': m_cache_dir.assign(option_arg); break; default: error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); break; } return error; } uint32_t OptionGroupPlatformCaching::GetNumDefinitions () { return llvm::array_lengthof(g_caching_option_table); } size_t Platform::GetEnvironment (StringList &environment) { environment.Clear(); return false; } const std::vector & Platform::GetTrapHandlerSymbolNames () { if (!m_calculated_trap_handlers) { std::lock_guard guard(m_mutex); if (!m_calculated_trap_handlers) { CalculateTrapHandlerSymbolNames(); m_calculated_trap_handlers = true; } } return m_trap_handlers; } Error Platform::GetCachedExecutable (ModuleSpec &module_spec, lldb::ModuleSP &module_sp, const FileSpecList *module_search_paths_ptr, Platform &remote_platform) { const auto platform_spec = module_spec.GetFileSpec (); const auto error = LoadCachedExecutable (module_spec, module_sp, module_search_paths_ptr, remote_platform); if (error.Success ()) { module_spec.GetFileSpec () = module_sp->GetFileSpec (); module_spec.GetPlatformFileSpec () = platform_spec; } return error; } Error Platform::LoadCachedExecutable (const ModuleSpec &module_spec, lldb::ModuleSP &module_sp, const FileSpecList *module_search_paths_ptr, Platform &remote_platform) { return GetRemoteSharedModule (module_spec, nullptr, module_sp, [&](const ModuleSpec &spec) { return remote_platform.ResolveExecutable ( spec, module_sp, module_search_paths_ptr); }, nullptr); } Error Platform::GetRemoteSharedModule (const ModuleSpec &module_spec, Process* process, lldb::ModuleSP &module_sp, const ModuleResolver &module_resolver, bool *did_create_ptr) { // Get module information from a target. ModuleSpec resolved_module_spec; bool got_module_spec = false; if (process) { // Try to get module information from the process if (process->GetModuleSpec (module_spec.GetFileSpec (), module_spec.GetArchitecture (), resolved_module_spec)) { if (module_spec.GetUUID().IsValid() == false || module_spec.GetUUID() == resolved_module_spec.GetUUID()) { got_module_spec = true; } } } if (!got_module_spec) { // Get module information from a target. if (!GetModuleSpec (module_spec.GetFileSpec (), module_spec.GetArchitecture (), resolved_module_spec)) { if (module_spec.GetUUID().IsValid() == false || module_spec.GetUUID() == resolved_module_spec.GetUUID()) { return module_resolver (module_spec); } } } // If we are looking for a specific UUID, make sure resolved_module_spec has the same one before we search. if (module_spec.GetUUID().IsValid()) { resolved_module_spec.GetUUID() = module_spec.GetUUID(); } // Trying to find a module by UUID on local file system. const auto error = module_resolver (resolved_module_spec); if (error.Fail ()) { if (GetCachedSharedModule (resolved_module_spec, module_sp, did_create_ptr)) return Error (); } return error; } bool Platform::GetCachedSharedModule (const ModuleSpec &module_spec, lldb::ModuleSP &module_sp, bool *did_create_ptr) { if (IsHost() || !GetGlobalPlatformProperties ()->GetUseModuleCache () || !GetGlobalPlatformProperties ()->GetModuleCacheDirectory ()) return false; Log *log = GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PLATFORM); // Check local cache for a module. auto error = m_module_cache->GetAndPut ( GetModuleCacheRoot (), GetCacheHostname (), module_spec, [this](const ModuleSpec &module_spec, const FileSpec &tmp_download_file_spec) { return DownloadModuleSlice (module_spec.GetFileSpec (), module_spec.GetObjectOffset (), module_spec.GetObjectSize (), tmp_download_file_spec); }, [this](const ModuleSP& module_sp, const FileSpec& tmp_download_file_spec) { return DownloadSymbolFile (module_sp, tmp_download_file_spec); }, module_sp, did_create_ptr); if (error.Success ()) return true; if (log) log->Printf("Platform::%s - module %s not found in local cache: %s", __FUNCTION__, module_spec.GetUUID ().GetAsString ().c_str (), error.AsCString ()); return false; } Error Platform::DownloadModuleSlice (const FileSpec& src_file_spec, const uint64_t src_offset, const uint64_t src_size, const FileSpec& dst_file_spec) { Error error; std::ofstream dst (dst_file_spec.GetPath(), std::ios::out | std::ios::binary); if (!dst.is_open()) { error.SetErrorStringWithFormat ("unable to open destination file: %s", dst_file_spec.GetPath ().c_str ()); return error; } auto src_fd = OpenFile (src_file_spec, File::eOpenOptionRead, lldb::eFilePermissionsFileDefault, error); if (error.Fail ()) { error.SetErrorStringWithFormat ("unable to open source file: %s", error.AsCString ()); return error; } std::vector buffer (1024); auto offset = src_offset; uint64_t total_bytes_read = 0; while (total_bytes_read < src_size) { const auto to_read = std::min (static_cast(buffer.size ()), src_size - total_bytes_read); const uint64_t n_read = ReadFile (src_fd, offset, &buffer[0], to_read, error); if (error.Fail ()) break; if (n_read == 0) { error.SetErrorString ("read 0 bytes"); break; } offset += n_read; total_bytes_read += n_read; dst.write (&buffer[0], n_read); } Error close_error; CloseFile (src_fd, close_error); // Ignoring close error. return error; } Error Platform::DownloadSymbolFile (const lldb::ModuleSP& module_sp, const FileSpec& dst_file_spec) { return Error ("Symbol file downloading not supported by the default platform."); } FileSpec Platform::GetModuleCacheRoot () { auto dir_spec = GetGlobalPlatformProperties ()->GetModuleCacheDirectory (); dir_spec.AppendPathComponent (GetName ().AsCString ()); return dir_spec; } const char * Platform::GetCacheHostname () { return GetHostname (); } const UnixSignalsSP & Platform::GetRemoteUnixSignals() { static const auto s_default_unix_signals_sp = std::make_shared(); return s_default_unix_signals_sp; } const UnixSignalsSP & Platform::GetUnixSignals() { if (IsHost()) return Host::GetUnixSignals(); return GetRemoteUnixSignals(); } uint32_t Platform::LoadImage(lldb_private::Process* process, const lldb_private::FileSpec& local_file, const lldb_private::FileSpec& remote_file, lldb_private::Error& error) { if (local_file && remote_file) { // Both local and remote file was specified. Install the local file to the given location. if (IsRemote() || local_file != remote_file) { error = Install(local_file, remote_file); if (error.Fail()) return LLDB_INVALID_IMAGE_TOKEN; } return DoLoadImage(process, remote_file, error); } if (local_file) { // Only local file was specified. Install it to the current working directory. FileSpec target_file = GetWorkingDirectory(); target_file.AppendPathComponent(local_file.GetFilename().AsCString()); if (IsRemote() || local_file != target_file) { error = Install(local_file, target_file); if (error.Fail()) return LLDB_INVALID_IMAGE_TOKEN; } return DoLoadImage(process, target_file, error); } if (remote_file) { // Only remote file was specified so we don't have to do any copying return DoLoadImage(process, remote_file, error); } error.SetErrorString("Neither local nor remote file was specified"); return LLDB_INVALID_IMAGE_TOKEN; } uint32_t Platform::DoLoadImage (lldb_private::Process* process, const lldb_private::FileSpec& remote_file, lldb_private::Error& error) { error.SetErrorString("LoadImage is not supported on the current platform"); return LLDB_INVALID_IMAGE_TOKEN; } Error Platform::UnloadImage(lldb_private::Process* process, uint32_t image_token) { return Error("UnloadImage is not supported on the current platform"); } lldb::ProcessSP Platform::ConnectProcess(const char* connect_url, const char* plugin_name, lldb_private::Debugger &debugger, lldb_private::Target *target, lldb_private::Error &error) { error.Clear(); if (!target) { TargetSP new_target_sp; error = debugger.GetTargetList().CreateTarget(debugger, nullptr, nullptr, false, nullptr, new_target_sp); target = new_target_sp.get(); } if (!target || error.Fail()) return nullptr; debugger.GetTargetList().SetSelectedTarget(target); lldb::ProcessSP process_sp = target->CreateProcess(debugger.GetListener(), plugin_name, nullptr); if (!process_sp) return nullptr; error = process_sp->ConnectRemote(debugger.GetOutputFile().get(), connect_url); if (error.Fail()) return nullptr; return process_sp; } size_t Platform::ConnectToWaitingProcesses(lldb_private::Debugger& debugger, lldb_private::Error& error) { error.Clear(); return 0; } size_t Platform::GetSoftwareBreakpointTrapOpcode(Target &target, BreakpointSite *bp_site) { ArchSpec arch = target.GetArchitecture(); const uint8_t *trap_opcode = nullptr; size_t trap_opcode_size = 0; switch (arch.GetMachine()) { case llvm::Triple::aarch64: { static const uint8_t g_aarch64_opcode[] = {0x00, 0x00, 0x20, 0xd4}; trap_opcode = g_aarch64_opcode; trap_opcode_size = sizeof(g_aarch64_opcode); } break; // TODO: support big-endian arm and thumb trap codes. case llvm::Triple::arm: { // The ARM reference recommends the use of 0xe7fddefe and 0xdefe // but the linux kernel does otherwise. static const uint8_t g_arm_breakpoint_opcode[] = {0xf0, 0x01, 0xf0, 0xe7}; static const uint8_t g_thumb_breakpoint_opcode[] = {0x01, 0xde}; lldb::BreakpointLocationSP bp_loc_sp(bp_site->GetOwnerAtIndex(0)); AddressClass addr_class = eAddressClassUnknown; if (bp_loc_sp) { addr_class = bp_loc_sp->GetAddress().GetAddressClass(); if (addr_class == eAddressClassUnknown && (bp_loc_sp->GetAddress().GetFileAddress() & 1)) addr_class = eAddressClassCodeAlternateISA; } if (addr_class == eAddressClassCodeAlternateISA) { trap_opcode = g_thumb_breakpoint_opcode; trap_opcode_size = sizeof(g_thumb_breakpoint_opcode); } else { trap_opcode = g_arm_breakpoint_opcode; trap_opcode_size = sizeof(g_arm_breakpoint_opcode); } } break; case llvm::Triple::mips: case llvm::Triple::mips64: { static const uint8_t g_hex_opcode[] = {0x00, 0x00, 0x00, 0x0d}; trap_opcode = g_hex_opcode; trap_opcode_size = sizeof(g_hex_opcode); } break; case llvm::Triple::mipsel: case llvm::Triple::mips64el: { static const uint8_t g_hex_opcode[] = {0x0d, 0x00, 0x00, 0x00}; trap_opcode = g_hex_opcode; trap_opcode_size = sizeof(g_hex_opcode); } break; case llvm::Triple::systemz: { static const uint8_t g_hex_opcode[] = {0x00, 0x01}; trap_opcode = g_hex_opcode; trap_opcode_size = sizeof(g_hex_opcode); } break; case llvm::Triple::hexagon: { static const uint8_t g_hex_opcode[] = {0x0c, 0xdb, 0x00, 0x54}; trap_opcode = g_hex_opcode; trap_opcode_size = sizeof(g_hex_opcode); } break; case llvm::Triple::ppc: case llvm::Triple::ppc64: { static const uint8_t g_ppc_opcode[] = {0x7f, 0xe0, 0x00, 0x08}; trap_opcode = g_ppc_opcode; trap_opcode_size = sizeof(g_ppc_opcode); } break; case llvm::Triple::x86: case llvm::Triple::x86_64: { static const uint8_t g_i386_opcode[] = {0xCC}; trap_opcode = g_i386_opcode; trap_opcode_size = sizeof(g_i386_opcode); } break; default: assert(!"Unhandled architecture in Platform::GetSoftwareBreakpointTrapOpcode"); break; } assert(bp_site); if (bp_site->SetTrapOpcode(trap_opcode, trap_opcode_size)) return trap_opcode_size; return 0; }