83 lines · cpp
1//===-- DynamicLoaderWasmDYLD.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 "DynamicLoaderWasmDYLD.h"10 11#include "Plugins/ObjectFile/wasm/ObjectFileWasm.h"12#include "lldb/Core/Module.h"13#include "lldb/Core/PluginManager.h"14#include "lldb/Core/Section.h"15#include "lldb/Target/Process.h"16#include "lldb/Target/Target.h"17#include "lldb/Utility/LLDBLog.h"18#include "lldb/Utility/Log.h"19 20using namespace lldb;21using namespace lldb_private;22using namespace lldb_private::wasm;23 24LLDB_PLUGIN_DEFINE(DynamicLoaderWasmDYLD)25 26DynamicLoaderWasmDYLD::DynamicLoaderWasmDYLD(Process *process)27 : DynamicLoader(process) {}28 29void DynamicLoaderWasmDYLD::Initialize() {30 PluginManager::RegisterPlugin(GetPluginNameStatic(),31 GetPluginDescriptionStatic(), CreateInstance);32}33 34llvm::StringRef DynamicLoaderWasmDYLD::GetPluginDescriptionStatic() {35 return "Dynamic loader plug-in that watches for shared library "36 "loads/unloads in WebAssembly engines.";37}38 39DynamicLoader *DynamicLoaderWasmDYLD::CreateInstance(Process *process,40 bool force) {41 bool should_create = force;42 if (!should_create) {43 should_create =44 (process->GetTarget().GetArchitecture().GetTriple().getArch() ==45 llvm::Triple::wasm32);46 }47 48 if (should_create)49 return new DynamicLoaderWasmDYLD(process);50 51 return nullptr;52}53 54void DynamicLoaderWasmDYLD::DidAttach() {55 Log *log = GetLog(LLDBLog::DynamicLoader);56 LLDB_LOGF(log, "DynamicLoaderWasmDYLD::%s()", __FUNCTION__);57 58 // Ask the process for the list of loaded WebAssembly modules.59 auto error = m_process->LoadModules();60 LLDB_LOG_ERROR(log, std::move(error), "Couldn't load modules: {0}");61}62 63ThreadPlanSP DynamicLoaderWasmDYLD::GetStepThroughTrampolinePlan(Thread &thread,64 bool stop) {65 return ThreadPlanSP();66}67 68lldb::ModuleSP DynamicLoaderWasmDYLD::LoadModuleAtAddress(69 const lldb_private::FileSpec &file, lldb::addr_t link_map_addr,70 lldb::addr_t base_addr, bool base_addr_is_offset) {71 if (ModuleSP module_sp = DynamicLoader::LoadModuleAtAddress(72 file, link_map_addr, base_addr, base_addr_is_offset))73 return module_sp;74 75 if (ModuleSP module_sp = m_process->ReadModuleFromMemory(file, base_addr)) {76 UpdateLoadedSections(module_sp, link_map_addr, base_addr, false);77 m_process->GetTarget().GetImages().AppendIfNeeded(module_sp);78 return module_sp;79 }80 81 return nullptr;82}83