| //===-- 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 <algorithm> |
| #include <csignal> |
| #include <fstream> |
| #include <vector> |
| |
| // Other libraries and framework includes |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Path.h" |
| |
| // Project includes |
| #include "lldb/Breakpoint/BreakpointIDList.h" |
| #include "lldb/Breakpoint/BreakpointLocation.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleSpec.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/StreamFile.h" |
| #include "lldb/Host/FileSystem.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Host/HostInfo.h" |
| #include "lldb/Host/OptionParser.h" |
| #include "lldb/Interpreter/OptionValueProperties.h" |
| #include "lldb/Interpreter/Property.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Target/ModuleCache.h" |
| #include "lldb/Target/Platform.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/UnixSignals.h" |
| #include "lldb/Utility/DataBufferHeap.h" |
| #include "lldb/Utility/FileSpec.h" |
| #include "lldb/Utility/Log.h" |
| #include "lldb/Utility/Status.h" |
| #include "lldb/Utility/StructuredData.h" |
| |
| #include "llvm/Support/FileSystem.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 { |
| |
| static constexpr PropertyDefinition g_properties[] = { |
| {"use-module-cache", OptionValue::eTypeBoolean, true, true, nullptr, |
| {}, "Use module cache."}, |
| {"module-cache-directory", OptionValue::eTypeFileSpec, true, 0, nullptr, |
| {}, "Root directory for cached modules."}}; |
| |
| 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<PlatformSP> &GetPlatformList() { |
| static std::vector<PlatformSP> 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<std::recursive_mutex> guard(GetPlatformListMutex()); |
| GetPlatformList().clear(); |
| } |
| } |
| } |
| |
| const PlatformPropertiesSP &Platform::GetGlobalPlatformProperties() { |
| static const auto g_settings_sp(std::make_shared<PlatformProperties>()); |
| 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<std::recursive_mutex> guard(GetPlatformListMutex()); |
| GetPlatformList().push_back(platform_sp); |
| } |
| } |
| |
| Status Platform::GetFileWithUUID(const FileSpec &platform_file, |
| const UUID *uuid_ptr, FileSpec &local_file) { |
| // Default to the local case |
| local_file = platform_file; |
| return Status(); |
| } |
| |
| 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(); |
| //} |
| |
| Status 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); |
| |
| // Module resolver lambda. |
| auto resolver = [&](const ModuleSpec &spec) { |
| Status error(eErrorTypeGeneric); |
| ModuleSpec resolved_spec; |
| // Check if we have sysroot set. |
| if (m_sdk_sysroot) { |
| // Prepend sysroot to module spec. |
| resolved_spec = spec; |
| resolved_spec.GetFileSpec().PrependPathComponent( |
| m_sdk_sysroot.GetStringRef()); |
| // Try to get shared module with resolved spec. |
| error = ModuleList::GetSharedModule( |
| resolved_spec, module_sp, module_search_paths_ptr, old_module_sp_ptr, |
| did_create_ptr, false); |
| } |
| // If we don't have sysroot or it didn't work then |
| // try original module spec. |
| if (!error.Success()) { |
| resolved_spec = spec; |
| error = ModuleList::GetSharedModule( |
| resolved_spec, module_sp, module_search_paths_ptr, old_module_sp_ptr, |
| did_create_ptr, false); |
| } |
| if (error.Success() && module_sp) |
| module_sp->SetPlatformFileSpec(resolved_spec.GetFileSpec()); |
| return error; |
| }; |
| |
| return GetRemoteSharedModule(module_spec, process, module_sp, resolver, |
| 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<std::recursive_mutex> guard(GetPlatformListMutex()); |
| for (const auto &platform_sp : GetPlatformList()) { |
| if (platform_sp->GetName() == name) |
| return platform_sp; |
| } |
| } |
| return PlatformSP(); |
| } |
| |
| PlatformSP Platform::Create(const ConstString &name, Status &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<std::recursive_mutex> guard(GetPlatformListMutex()); |
| GetPlatformList().push_back(platform_sp); |
| } |
| |
| return platform_sp; |
| } |
| |
| PlatformSP Platform::Create(const ArchSpec &arch, ArchSpec *platform_arch_ptr, |
| Status &error) { |
| lldb::PlatformSP platform_sp; |
| if (arch.IsValid()) { |
| // Scope for locker |
| { |
| // First try exact arch matches across all platforms already created |
| std::lock_guard<std::recursive_mutex> 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<std::recursive_mutex> 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<std::recursive_mutex> 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; |
| } |
| |
| ArchSpec Platform::GetAugmentedArchSpec(Platform *platform, llvm::StringRef triple) { |
| if (platform) |
| return platform->GetAugmentedArchSpec(triple); |
| return HostInfo::GetAugmentedArchSpec(triple); |
| } |
| |
| //------------------------------------------------------------------ |
| /// 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_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<ModuleCache>()) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); |
| if (log) |
| log->Printf("%p Platform::Platform()", static_cast<void *>(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<void *>(this)); |
| } |
| |
| void Platform::GetStatus(Stream &strm) { |
| 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(); |
| } |
| } |
| |
| llvm::VersionTuple os_version = GetOSVersion(); |
| if (!os_version.empty()) { |
| strm.Format("OS Version: {0}", os_version.getAsString()); |
| |
| 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()); |
| } |
| |
| llvm::VersionTuple Platform::GetOSVersion(Process *process) { |
| std::lock_guard<std::mutex> guard(m_mutex); |
| |
| if (IsHost()) { |
| if (m_os_version.empty()) { |
| // We have a local host platform |
| m_os_version = HostInfo::GetOSVersion(); |
| m_os_version_set_while_connected = !m_os_version.empty(); |
| } |
| } 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 (!m_os_version.empty()) { |
| // 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) |
| m_os_version_set_while_connected = GetRemoteOSVersion(); |
| } |
| |
| if (!m_os_version.empty()) |
| return m_os_version; |
| if (process) { |
| // Check with the process in case it can answer the question if a process |
| // was provided |
| return process->GetHostOSVersion(); |
| } |
| return llvm::VersionTuple(); |
| } |
| |
| 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<std::string> &options) { |
| std::vector<std::string> 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()) { |
| llvm::SmallString<64> cwd; |
| if (llvm::sys::fs::current_path(cwd)) |
| return FileSpec{}; |
| else |
| return FileSpec(cwd, true); |
| } else { |
| if (!m_working_dir) |
| m_working_dir = GetRemoteWorkingDirectory(); |
| return m_working_dir; |
| } |
| } |
| |
| struct RecurseCopyBaton { |
| const FileSpec &dst; |
| Platform *platform_ptr; |
| Status error; |
| }; |
| |
| static FileSystem::EnumerateDirectoryResult |
| RecurseCopy_Callback(void *baton, llvm::sys::fs::file_type ft, |
| llvm::StringRef path) { |
| RecurseCopyBaton *rc_baton = (RecurseCopyBaton *)baton; |
| FileSpec src(path, false); |
| namespace fs = llvm::sys::fs; |
| switch (ft) { |
| case fs::file_type::fifo_file: |
| case fs::file_type::socket_file: |
| // we have no way to copy pipes and sockets - ignore them and continue |
| return FileSystem::eEnumerateDirectoryResultNext; |
| break; |
| |
| case fs::file_type::directory_file: { |
| // make the new directory and get in there |
| FileSpec dst_dir = rc_baton->dst; |
| if (!dst_dir.GetFilename()) |
| dst_dir.GetFilename() = src.GetLastPathComponent(); |
| Status 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 FileSystem::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, |
| Status()}; |
| FileSystem::Instance().EnumerateDirectory(src_dir_path, true, true, true, |
| RecurseCopy_Callback, &rc_baton2); |
| if (rc_baton2.error.Fail()) { |
| rc_baton->error.SetErrorString(rc_baton2.error.AsCString()); |
| return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out |
| } |
| return FileSystem::eEnumerateDirectoryResultNext; |
| } break; |
| |
| case fs::file_type::symlink_file: { |
| // 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::Instance().Readlink(src, src_resolved); |
| |
| if (rc_baton->error.Fail()) |
| return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out |
| |
| rc_baton->error = |
| rc_baton->platform_ptr->CreateSymlink(dst_file, src_resolved); |
| |
| if (rc_baton->error.Fail()) |
| return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out |
| |
| return FileSystem::eEnumerateDirectoryResultNext; |
| } break; |
| |
| case fs::file_type::regular_file: { |
| // copy the file and keep going |
| FileSpec dst_file = rc_baton->dst; |
| if (!dst_file.GetFilename()) |
| dst_file.GetFilename() = src.GetFilename(); |
| Status err = rc_baton->platform_ptr->PutFile(src, dst_file); |
| if (err.Fail()) { |
| rc_baton->error.SetErrorString(err.AsCString()); |
| return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out |
| } |
| return FileSystem::eEnumerateDirectoryResultNext; |
| } break; |
| |
| default: |
| rc_baton->error.SetErrorStringWithFormat( |
| "invalid file detected during copy: %s", src.GetPath().c_str()); |
| return FileSystem::eEnumerateDirectoryResultQuit; // got an error, bail out |
| break; |
| } |
| llvm_unreachable("Unhandled file_type!"); |
| } |
| |
| Status Platform::Install(const FileSpec &src, const FileSpec &dst) { |
| Status 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 { |
| namespace fs = llvm::sys::fs; |
| switch (fs::get_file_type(src.GetPath(), false)) { |
| case fs::file_type::directory_file: { |
| llvm::sys::fs::remove(fixed_dst.GetPath()); |
| uint32_t permissions = FileSystem::Instance().GetPermissions(src); |
| 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, Status()}; |
| FileSystem::Instance().EnumerateDirectory( |
| src_dir_path, true, true, true, RecurseCopy_Callback, &baton); |
| return baton.error; |
| } |
| } break; |
| |
| case fs::file_type::regular_file: |
| llvm::sys::fs::remove(fixed_dst.GetPath()); |
| error = PutFile(src, fixed_dst); |
| break; |
| |
| case fs::file_type::symlink_file: { |
| llvm::sys::fs::remove(fixed_dst.GetPath()); |
| FileSpec src_resolved; |
| error = FileSystem::Instance().Readlink(src, src_resolved); |
| if (error.Success()) |
| error = CreateSymlink(dst, src_resolved); |
| } break; |
| case fs::file_type::fifo_file: |
| error.SetErrorString("platform install doesn't handle pipes"); |
| break; |
| case fs::file_type::socket_file: |
| error.SetErrorString("platform install doesn't handle sockets"); |
| break; |
| default: |
| 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); |
| LLDB_LOG(log, "{0}", file_spec); |
| if (std::error_code ec = llvm::sys::fs::set_current_path(file_spec.GetPath())) { |
| LLDB_LOG(log, "error: {0}", ec.message()); |
| return false; |
| } |
| return true; |
| } else { |
| m_working_dir.Clear(); |
| return SetRemoteWorkingDirectory(file_spec); |
| } |
| } |
| |
| Status Platform::MakeDirectory(const FileSpec &file_spec, |
| uint32_t permissions) { |
| if (IsHost()) |
| return llvm::sys::fs::create_directory(file_spec.GetPath(), permissions); |
| else { |
| Status error; |
| error.SetErrorStringWithFormat("remote platform %s doesn't support %s", |
| GetPluginName().GetCString(), |
| LLVM_PRETTY_FUNCTION); |
| return error; |
| } |
| } |
| |
| Status Platform::GetFilePermissions(const FileSpec &file_spec, |
| uint32_t &file_permissions) { |
| if (IsHost()) { |
| auto Value = llvm::sys::fs::getPermissions(file_spec.GetPath()); |
| if (Value) |
| file_permissions = Value.get(); |
| return Status(Value.getError()); |
| } else { |
| Status error; |
| error.SetErrorStringWithFormat("remote platform %s doesn't support %s", |
| GetPluginName().GetCString(), |
| LLVM_PRETTY_FUNCTION); |
| return error; |
| } |
| } |
| |
| Status Platform::SetFilePermissions(const FileSpec &file_spec, |
| uint32_t file_permissions) { |
| if (IsHost()) { |
| auto Perms = static_cast<llvm::sys::fs::perms>(file_permissions); |
| return llvm::sys::fs::setPermissions(file_spec.GetPath(), Perms); |
| } else { |
| Status error; |
| error.SetErrorStringWithFormat("remote platform %s doesn't support %s", |
| GetPluginName().GetCString(), |
| LLVM_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(llvm::VersionTuple version) { |
| 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_os_version = version; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| Status |
| Platform::ResolveExecutable(const ModuleSpec &module_spec, |
| lldb::ModuleSP &exe_module_sp, |
| const FileSpecList *module_search_paths_ptr) { |
| Status 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; |
| } |
| |
| Status Platform::ResolveSymbolFile(Target &target, const ModuleSpec &sym_spec, |
| FileSpec &sym_file) { |
| Status 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; |
| } |
| |
| ArchSpec Platform::GetAugmentedArchSpec(llvm::StringRef triple) { |
| if (triple.empty()) |
| return ArchSpec(); |
| llvm::Triple normalized_triple(llvm::Triple::normalize(triple)); |
| if (!ArchSpec::ContainsOnlyArch(normalized_triple)) |
| return ArchSpec(triple); |
| |
| if (auto kind = HostInfo::ParseArchitectureKind(triple)) |
| return HostInfo::GetArchitecture(*kind); |
| |
| ArchSpec compatible_arch; |
| ArchSpec raw_arch(triple); |
| if (!IsCompatibleArchitecture(raw_arch, false, &compatible_arch)) |
| return raw_arch; |
| |
| if (!compatible_arch.IsValid()) |
| return ArchSpec(normalized_triple); |
| |
| const llvm::Triple &compatible_triple = compatible_arch.GetTriple(); |
| if (normalized_triple.getVendorName().empty()) |
| normalized_triple.setVendor(compatible_triple.getVendor()); |
| if (normalized_triple.getOSName().empty()) |
| normalized_triple.setOS(compatible_triple.getOS()); |
| if (normalized_triple.getEnvironmentName().empty()) |
| normalized_triple.setEnvironment(compatible_triple.getEnvironment()); |
| return ArchSpec(normalized_triple); |
| } |
| |
| Status Platform::ConnectRemote(Args &args) { |
| Status 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; |
| } |
| |
| Status Platform::DisconnectRemote() { |
| Status 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; |
| } |
| |
| Status Platform::LaunchProcess(ProcessLaunchInfo &launch_info) { |
| Status 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() : "<null>"; |
| 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; |
| } |
| |
| Status Platform::ShellExpandArguments(ProcessLaunchInfo &launch_info) { |
| if (IsHost()) |
| return Host::ShellExpandArguments(launch_info); |
| return Status("base lldb_private::Platform class can't expand arguments"); |
| } |
| |
| Status 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 Status( |
| "base lldb_private::Platform class can't kill remote processes unless " |
| "they are controlled by a process plugin"); |
| } |
| Host::Kill(pid, SIGTERM); |
| return Status(); |
| } |
| |
| lldb::ProcessSP |
| Platform::DebugProcess(ProcessLaunchInfo &launch_info, Debugger &debugger, |
| Target *target, // Can be nullptr, if nullptr create a |
| // new target, else use existing one |
| Status &error) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM)); |
| if (log) |
| log->Printf("Platform::%s entered (target %p)", __FUNCTION__, |
| static_cast<void *>(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); |
| |
| // Allow any StructuredData process-bound plugins to adjust the launch info |
| // if needed |
| size_t i = 0; |
| bool iteration_complete = false; |
| // Note iteration can't simply go until a nullptr callback is returned, as it |
| // is valid for a plugin to not supply a filter. |
| auto get_filter_func = PluginManager::GetStructuredDataFilterCallbackAtIndex; |
| for (auto filter_callback = get_filter_func(i, iteration_complete); |
| !iteration_complete; |
| filter_callback = get_filter_func(++i, iteration_complete)) { |
| if (filter_callback) { |
| // Give this ProcessLaunchInfo filter a chance to adjust the launch info. |
| error = (*filter_callback)(launch_info, target); |
| if (!error.Success()) { |
| if (log) |
| log->Printf("Platform::%s() StructuredDataPlugin launch " |
| "filter failed.", |
| __FUNCTION__); |
| return process_sp; |
| } |
| } |
| } |
| |
| 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 != 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; |
| Status 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; |
| } |
| |
| Status 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; |
| namespace fs = llvm::sys::fs; |
| if (fs::is_symlink_file(source.GetPath())) |
| source_open_options |= File::eOpenOptionDontFollowSymlinks; |
| |
| File source_file(source, source_open_options, lldb::eFilePermissionsUserRW); |
| Status error; |
| uint32_t permissions = source_file.GetPermissions(error); |
| if (permissions == 0) |
| permissions = lldb::eFilePermissionsFileDefault; |
| |
| if (!source_file.IsValid()) |
| return Status("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 Status("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; |
| } |
| |
| Status Platform::GetFile(const FileSpec &source, const FileSpec &destination) { |
| Status error("unimplemented"); |
| return error; |
| } |
| |
| Status |
| Platform::CreateSymlink(const FileSpec &src, // The name of the link is in src |
| const FileSpec &dst) // The symlink points to dst |
| { |
| Status error("unimplemented"); |
| return error; |
| } |
| |
| bool Platform::GetFileExists(const lldb_private::FileSpec &file_spec) { |
| return false; |
| } |
| |
| Status Platform::Unlink(const FileSpec &path) { |
| Status error("unimplemented"); |
| return error; |
| } |
| |
| MmapArgList Platform::GetMmapArgumentList(const ArchSpec &arch, addr_t addr, |
| addr_t length, unsigned prot, |
| unsigned flags, addr_t fd, |
| addr_t offset) { |
| uint64_t flags_platform = 0; |
| if (flags & eMmapFlagsPrivate) |
| flags_platform |= MAP_PRIVATE; |
| if (flags & eMmapFlagsAnon) |
| flags_platform |= MAP_ANON; |
| |
| MmapArgList args({addr, length, prot, flags_platform, fd, offset}); |
| return args; |
| } |
| |
| lldb_private::Status 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 |
| const Timeout<std::micro> &timeout) { |
| if (IsHost()) |
| return Host::RunShellCommand(command, working_dir, status_ptr, signo_ptr, |
| command_output, timeout); |
| else |
| return Status("unimplemented"); |
| } |
| |
| bool Platform::CalculateMD5(const FileSpec &file_spec, uint64_t &low, |
| uint64_t &high) { |
| if (!IsHost()) |
| return false; |
| auto Result = llvm::sys::fs::md5_contents(file_spec.GetPath()); |
| if (!Result) |
| return false; |
| std::tie(high, low) = Result->words(); |
| return true; |
| } |
| |
| void Platform::SetLocalCacheDirectory(const char *local) { |
| m_local_cache_directory.assign(local); |
| } |
| |
| const char *Platform::GetLocalCacheDirectory() { |
| return m_local_cache_directory.c_str(); |
| } |
| |
| static constexpr OptionDefinition g_rsync_option_table[] = { |
| {LLDB_OPT_SET_ALL, false, "rsync", 'r', OptionParser::eNoArgument, nullptr, |
| {}, 0, eArgTypeNone, "Enable rsync."}, |
| {LLDB_OPT_SET_ALL, false, "rsync-opts", 'R', |
| OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeCommandName, |
| "Platform-specific options required for rsync to work."}, |
| {LLDB_OPT_SET_ALL, false, "rsync-prefix", 'P', |
| OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeCommandName, |
| "Platform-specific rsync prefix put before the remote path."}, |
| {LLDB_OPT_SET_ALL, false, "ignore-remote-hostname", 'i', |
| OptionParser::eNoArgument, nullptr, {}, 0, eArgTypeNone, |
| "Do not automatically fill in the remote hostname when composing the " |
| "rsync command."}, |
| }; |
| |
| static constexpr OptionDefinition g_ssh_option_table[] = { |
| {LLDB_OPT_SET_ALL, false, "ssh", 's', OptionParser::eNoArgument, nullptr, |
| {}, 0, eArgTypeNone, "Enable SSH."}, |
| {LLDB_OPT_SET_ALL, false, "ssh-opts", 'S', OptionParser::eRequiredArgument, |
| nullptr, {}, 0, eArgTypeCommandName, |
| "Platform-specific options required for SSH to work."}, |
| }; |
| |
| static constexpr OptionDefinition g_caching_option_table[] = { |
| {LLDB_OPT_SET_ALL, false, "local-cache-dir", 'c', |
| OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypePath, |
| "Path in which to store local copies of files."}, |
| }; |
| |
| llvm::ArrayRef<OptionDefinition> OptionGroupPlatformRSync::GetDefinitions() { |
| return llvm::makeArrayRef(g_rsync_option_table); |
| } |
| |
| void OptionGroupPlatformRSync::OptionParsingStarting( |
| ExecutionContext *execution_context) { |
| m_rsync = false; |
| m_rsync_opts.clear(); |
| m_rsync_prefix.clear(); |
| m_ignores_remote_hostname = false; |
| } |
| |
| lldb_private::Status |
| OptionGroupPlatformRSync::SetOptionValue(uint32_t option_idx, |
| llvm::StringRef option_arg, |
| ExecutionContext *execution_context) { |
| Status 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; |
| } |
| |
| lldb::BreakpointSP |
| Platform::SetThreadCreationBreakpoint(lldb_private::Target &target) { |
| return lldb::BreakpointSP(); |
| } |
| |
| llvm::ArrayRef<OptionDefinition> OptionGroupPlatformSSH::GetDefinitions() { |
| return llvm::makeArrayRef(g_ssh_option_table); |
| } |
| |
| void OptionGroupPlatformSSH::OptionParsingStarting( |
| ExecutionContext *execution_context) { |
| m_ssh = false; |
| m_ssh_opts.clear(); |
| } |
| |
| lldb_private::Status |
| OptionGroupPlatformSSH::SetOptionValue(uint32_t option_idx, |
| llvm::StringRef option_arg, |
| ExecutionContext *execution_context) { |
| Status 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; |
| } |
| |
| llvm::ArrayRef<OptionDefinition> OptionGroupPlatformCaching::GetDefinitions() { |
| return llvm::makeArrayRef(g_caching_option_table); |
| } |
| |
| void OptionGroupPlatformCaching::OptionParsingStarting( |
| ExecutionContext *execution_context) { |
| m_cache_dir.clear(); |
| } |
| |
| lldb_private::Status OptionGroupPlatformCaching::SetOptionValue( |
| uint32_t option_idx, llvm::StringRef option_arg, |
| ExecutionContext *execution_context) { |
| Status 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; |
| } |
| |
| Environment Platform::GetEnvironment() { return Environment(); } |
| |
| const std::vector<ConstString> &Platform::GetTrapHandlerSymbolNames() { |
| if (!m_calculated_trap_handlers) { |
| std::lock_guard<std::mutex> guard(m_mutex); |
| if (!m_calculated_trap_handlers) { |
| CalculateTrapHandlerSymbolNames(); |
| m_calculated_trap_handlers = true; |
| } |
| } |
| return m_trap_handlers; |
| } |
| |
| Status 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; |
| } |
| |
| Status 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); |
| } |
| |
| Status 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 (module_spec.GetArchitecture().IsValid() == false) { |
| Status error; |
| // 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, module_sp, nullptr, |
| nullptr, nullptr); |
| // Did we find an executable using one of the |
| if (error.Success() && module_sp) |
| break; |
| } |
| if (module_sp) |
| 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 Status(); |
| } |
| |
| 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; |
| } |
| |
| Status Platform::DownloadModuleSlice(const FileSpec &src_file_spec, |
| const uint64_t src_offset, |
| const uint64_t src_size, |
| const FileSpec &dst_file_spec) { |
| Status error; |
| |
| std::error_code EC; |
| llvm::raw_fd_ostream dst(dst_file_spec.GetPath(), EC, llvm::sys::fs::F_None); |
| if (EC) { |
| 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<char> 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<uint64_t>(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); |
| } |
| |
| Status close_error; |
| CloseFile(src_fd, close_error); // Ignoring close error. |
| |
| return error; |
| } |
| |
| Status Platform::DownloadSymbolFile(const lldb::ModuleSP &module_sp, |
| const FileSpec &dst_file_spec) { |
| return Status( |
| "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<UnixSignals>(); |
| 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::Status &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, nullptr, 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, nullptr, error); |
| } |
| |
| if (remote_file) { |
| // Only remote file was specified so we don't have to do any copying |
| return DoLoadImage(process, remote_file, nullptr, 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, |
| const std::vector<std::string> *paths, |
| lldb_private::Status &error, |
| lldb_private::FileSpec *loaded_image) { |
| error.SetErrorString("LoadImage is not supported on the current platform"); |
| return LLDB_INVALID_IMAGE_TOKEN; |
| } |
| |
| uint32_t Platform::LoadImageUsingPaths(lldb_private::Process *process, |
| const lldb_private::FileSpec &remote_filename, |
| const std::vector<std::string> &paths, |
| lldb_private::Status &error, |
| lldb_private::FileSpec *loaded_path) |
| { |
| FileSpec file_to_use; |
| if (remote_filename.IsAbsolute()) |
| file_to_use = FileSpec(remote_filename.GetFilename().GetStringRef(), |
| false, |
| remote_filename.GetPathStyle()); |
| else |
| file_to_use = remote_filename; |
| |
| return DoLoadImage(process, file_to_use, &paths, error, loaded_path); |
| } |
| |
| Status Platform::UnloadImage(lldb_private::Process *process, |
| uint32_t image_token) { |
| return Status("UnloadImage is not supported on the current platform"); |
| } |
| |
| lldb::ProcessSP Platform::ConnectProcess(llvm::StringRef connect_url, |
| llvm::StringRef plugin_name, |
| lldb_private::Debugger &debugger, |
| lldb_private::Target *target, |
| lldb_private::Status &error) { |
| error.Clear(); |
| |
| if (!target) { |
| ArchSpec arch; |
| if (target && target->GetArchitecture().IsValid()) |
| arch = target->GetArchitecture(); |
| else |
| arch = Target::GetDefaultArchitecture(); |
| |
| const char *triple = ""; |
| if (arch.IsValid()) |
| triple = arch.GetTriple().getTriple().c_str(); |
| |
| TargetSP new_target_sp; |
| error = debugger.GetTargetList().CreateTarget( |
| debugger, "", triple, eLoadDependentsNo, 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::Status &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 = AddressClass::eUnknown; |
| |
| if (bp_loc_sp) { |
| addr_class = bp_loc_sp->GetAddress().GetAddressClass(); |
| if (addr_class == AddressClass::eUnknown && |
| (bp_loc_sp->GetAddress().GetFileAddress() & 1)) |
| addr_class = AddressClass::eCodeAlternateISA; |
| } |
| |
| if (addr_class == AddressClass::eCodeAlternateISA) { |
| 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::ppc64le: { |
| static const uint8_t g_ppc64le_opcode[] = {0x08, 0x00, 0xe0, 0x7f}; // trap |
| trap_opcode = g_ppc64le_opcode; |
| trap_opcode_size = sizeof(g_ppc64le_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: |
| llvm_unreachable( |
| "Unhandled architecture in Platform::GetSoftwareBreakpointTrapOpcode"); |
| } |
| |
| assert(bp_site); |
| if (bp_site->SetTrapOpcode(trap_opcode, trap_opcode_size)) |
| return trap_opcode_size; |
| |
| return 0; |
| } |