151 lines · cpp
1//===-- SystemInitializerFull.cpp -----------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "SystemInitializerFull.h"10#include "lldb/API/SBCommandInterpreter.h"11#include "lldb/API/SBDebugger.h"12#include "lldb/Core/Debugger.h"13#include "lldb/Core/PluginManager.h"14#include "lldb/Core/Progress.h"15#include "lldb/Host/Config.h"16#include "lldb/Host/Host.h"17#include "lldb/Initialization/SystemInitializerCommon.h"18#include "lldb/Interpreter/CommandInterpreter.h"19#include "lldb/Target/ProcessTrace.h"20#include "lldb/Utility/Timer.h"21#include "lldb/Version/Version.h"22#include "llvm/Support/CommandLine.h"23#include "llvm/Support/TargetSelect.h"24 25#pragma clang diagnostic push26#pragma clang diagnostic ignored "-Wglobal-constructors"27#include "llvm/ExecutionEngine/MCJIT.h"28#pragma clang diagnostic pop29 30#include <string>31 32#define LLDB_PLUGIN(p) LLDB_PLUGIN_DECLARE(p)33#include "Plugins/Plugins.def"34 35#if LLDB_ENABLE_PYTHON36#include "Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.h"37 38constexpr lldb_private::HostInfo::SharedLibraryDirectoryHelper39 *g_shlib_dir_helper =40 lldb_private::ScriptInterpreterPython::SharedLibraryDirectoryHelper;41 42#else43constexpr lldb_private::HostInfo::SharedLibraryDirectoryHelper44 *g_shlib_dir_helper = nullptr;45#endif46 47using namespace lldb_private;48 49SystemInitializerFull::SystemInitializerFull()50 : SystemInitializerCommon(g_shlib_dir_helper) {}51SystemInitializerFull::~SystemInitializerFull() = default;52 53llvm::Error SystemInitializerFull::Initialize() {54 llvm::Error error = SystemInitializerCommon::Initialize();55 if (error)56 return error;57 58 // Initialize LLVM and Clang59 llvm::InitializeAllTargets();60 llvm::InitializeAllAsmPrinters();61 llvm::InitializeAllTargetMCs();62 llvm::InitializeAllDisassemblers();63 64 // Initialize the command line parser in LLVM. This usually isn't necessary65 // as we aren't dealing with command line options here, but otherwise some66 // other code in Clang/LLVM might be tempted to call this function from a67 // different thread later on which won't work (as the function isn't68 // thread-safe).69 const char *arg0 = "lldb";70 llvm::cl::ParseCommandLineOptions(1, &arg0);71 72#define LLDB_PLUGIN(p) LLDB_PLUGIN_INITIALIZE(p);73#include "Plugins/Plugins.def"74 75 // Scan for any system or user LLDB plug-ins.76 PluginManager::Initialize();77 78 // The process settings need to know about installed plug-ins, so the79 // Settings must be initialized AFTER PluginManager::Initialize is called.80 Debugger::SettingsInitialize();81 82 // Use the Debugger's LLDBAssert callback.83 SetLLDBAssertCallback(Debugger::AssertCallback);84 85 // Use the system log to report errors that would otherwise get dropped.86 SetLLDBErrorLog(GetLog(SystemLog::System));87 88 LLDB_LOG(GetLog(SystemLog::System), "{0}", GetVersion());89 90 auto LoadPlugin = [](const lldb::DebuggerSP &debugger_sp,91 const FileSpec &spec,92 Status &error) -> llvm::sys::DynamicLibrary {93 llvm::sys::DynamicLibrary dynlib =94 llvm::sys::DynamicLibrary::getPermanentLibrary(spec.GetPath().c_str());95 if (dynlib.isValid()) {96 typedef bool (*LLDBCommandPluginInit)(lldb::SBDebugger debugger);97 98 lldb::SBDebugger debugger_sb(debugger_sp);99 // This calls the bool lldb::PluginInitialize(lldb::SBDebugger debugger)100 // function.101 // TODO: mangle this differently for your system - on OSX, the first102 // underscore needs to be removed and the second one stays103 LLDBCommandPluginInit init_func =104 (LLDBCommandPluginInit)(uintptr_t)dynlib.getAddressOfSymbol(105 "_ZN4lldb16PluginInitializeENS_10SBDebuggerE");106 if (init_func) {107 if (init_func(debugger_sb))108 return dynlib;109 else110 error = Status::FromErrorString(111 "plug-in refused to load "112 "(lldb::PluginInitialize(lldb::SBDebugger) "113 "returned false)");114 } else {115 error = Status::FromErrorString(116 "plug-in is missing the required initialization: "117 "lldb::PluginInitialize(lldb::SBDebugger)");118 }119 } else {120 if (FileSystem::Instance().Exists(spec))121 error = Status::FromErrorString(122 "this file does not represent a loadable dylib");123 else124 error = Status::FromErrorString("no such file");125 }126 return llvm::sys::DynamicLibrary();127 };128 129 Debugger::Initialize(LoadPlugin);130 131 return llvm::Error::success();132}133 134void SystemInitializerFull::Terminate() {135 Debugger::Terminate();136 137 Debugger::SettingsTerminate();138 139 // Terminate plug-ins in core LLDB.140 ProcessTrace::Terminate();141 142 // Terminate and unload and loaded system or user LLDB plug-ins.143 PluginManager::Terminate();144 145#define LLDB_PLUGIN(p) LLDB_PLUGIN_TERMINATE(p);146#include "Plugins/Plugins.def"147 148 // Now shutdown the common parts, in reverse order.149 SystemInitializerCommon::Terminate();150}151