Coverage Report

Created: 2023-05-31 04:38

/Users/buildslave/jenkins/workspace/coverage/llvm-project/lldb/source/Plugins/DynamicLoader/wasm-DYLD/DynamicLoaderWasmDYLD.cpp
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//===-- DynamicLoaderWasmDYLD.cpp -----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "DynamicLoaderWasmDYLD.h"
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#include "Plugins/ObjectFile/wasm/ObjectFileWasm.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/LLDBLog.h"
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#include "lldb/Utility/Log.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::wasm;
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LLDB_PLUGIN_DEFINE(DynamicLoaderWasmDYLD)
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DynamicLoaderWasmDYLD::DynamicLoaderWasmDYLD(Process *process)
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    : DynamicLoader(process) {}
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void DynamicLoaderWasmDYLD::Initialize() {
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  PluginManager::RegisterPlugin(GetPluginNameStatic(),
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                                GetPluginDescriptionStatic(), CreateInstance);
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}
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llvm::StringRef DynamicLoaderWasmDYLD::GetPluginDescriptionStatic() {
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  return "Dynamic loader plug-in that watches for shared library "
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         "loads/unloads in WebAssembly engines.";
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}
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DynamicLoader *DynamicLoaderWasmDYLD::CreateInstance(Process *process,
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                                                     bool force) {
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  bool should_create = force;
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  if (!should_create) {
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    should_create =
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        (process->GetTarget().GetArchitecture().GetTriple().getArch() ==
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         llvm::Triple::wasm32);
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  }
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  if (should_create)
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    return new DynamicLoaderWasmDYLD(process);
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  return nullptr;
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}
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void DynamicLoaderWasmDYLD::DidAttach() {
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  Log *log = GetLog(LLDBLog::DynamicLoader);
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  LLDB_LOGF(log, "DynamicLoaderWasmDYLD::%s()", __FUNCTION__);
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  // Ask the process for the list of loaded WebAssembly modules.
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  auto error = m_process->LoadModules();
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  LLDB_LOG_ERROR(log, std::move(error), "Couldn't load modules: {0}");
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}
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ThreadPlanSP DynamicLoaderWasmDYLD::GetStepThroughTrampolinePlan(Thread &thread,
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                                                                 bool stop) {
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  return ThreadPlanSP();
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}
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lldb::ModuleSP DynamicLoaderWasmDYLD::LoadModuleAtAddress(
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    const lldb_private::FileSpec &file, lldb::addr_t link_map_addr,
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    lldb::addr_t base_addr, bool base_addr_is_offset) {
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  if (ModuleSP module_sp = DynamicLoader::LoadModuleAtAddress(
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          file, link_map_addr, base_addr, base_addr_is_offset))
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    return module_sp;
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  if (ModuleSP module_sp = m_process->ReadModuleFromMemory(file, base_addr)) {
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    UpdateLoadedSections(module_sp, link_map_addr, base_addr, false);
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    m_process->GetTarget().GetImages().AppendIfNeeded(module_sp);
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    return module_sp;
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  }
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  return nullptr;
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}