1 files changed, 244 insertions, 0 deletions
diff --git a/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
new file mode 100644
index 000000000000..20fbef50572b
--- /dev/null
+++ b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
@@ -0,0 +1,244 @@
+//===-- ScriptedProcess.cpp -----------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "ScriptedProcess.h"
+
+#include "lldb/Core/Debugger.h"
+#include "lldb/Core/Module.h"
+#include "lldb/Core/PluginManager.h"
+
+#include "lldb/Host/OptionParser.h"
+
+#include "lldb/Interpreter/OptionArgParser.h"
+#include "lldb/Interpreter/OptionGroupBoolean.h"
+#include "lldb/Interpreter/ScriptInterpreter.h"
+#include "lldb/Target/MemoryRegionInfo.h"
+
+LLDB_PLUGIN_DEFINE(ScriptedProcess)
+
+using namespace lldb;
+using namespace lldb_private;
+
+ConstString ScriptedProcess::GetPluginNameStatic() {
+  static ConstString g_name("ScriptedProcess");
+  return g_name;
+}
+
+const char *ScriptedProcess::GetPluginDescriptionStatic() {
+  return "Scripted Process plug-in.";
+}
+
+lldb::ProcessSP ScriptedProcess::CreateInstance(lldb::TargetSP target_sp,
+                                                lldb::ListenerSP listener_sp,
+                                                const FileSpec *file,
+                                                bool can_connect) {
+  ScriptedProcess::LaunchInfo launch_info(target_sp->GetProcessLaunchInfo());
+
+  auto process_sp =
+      std::make_shared<ScriptedProcess>(target_sp, listener_sp, launch_info);
+
+  if (!process_sp || !process_sp->m_script_object_sp ||
+      !process_sp->m_script_object_sp->IsValid())
+    return nullptr;
+
+  return process_sp;
+}
+
+bool ScriptedProcess::CanDebug(lldb::TargetSP target_sp,
+                               bool plugin_specified_by_name) {
+  return true;
+}
+
+ScriptedProcess::ScriptedProcess(lldb::TargetSP target_sp,
+                                 lldb::ListenerSP listener_sp,
+                                 const ScriptedProcess::LaunchInfo &launch_info)
+    : Process(target_sp, listener_sp), m_launch_info(launch_info) {
+  if (!target_sp)
+    return;
+
+  m_interpreter = target_sp->GetDebugger().GetScriptInterpreter();
+
+  if (!m_interpreter)
+    return;
+
+  StructuredData::ObjectSP object_sp = GetInterface().CreatePluginObject(
+      m_launch_info.GetClassName().c_str(), target_sp,
+      m_launch_info.GetDictionarySP());
+
+  if (object_sp && object_sp->IsValid())
+    m_script_object_sp = object_sp;
+}
+
+ScriptedProcess::~ScriptedProcess() {
+  Clear();
+  // We need to call finalize on the process before destroying ourselves to
+  // make sure all of the broadcaster cleanup goes as planned. If we destruct
+  // this class, then Process::~Process() might have problems trying to fully
+  // destroy the broadcaster.
+  Finalize();
+}
+
+void ScriptedProcess::Initialize() {
+  static llvm::once_flag g_once_flag;
+
+  llvm::call_once(g_once_flag, []() {
+    PluginManager::RegisterPlugin(GetPluginNameStatic(),
+                                  GetPluginDescriptionStatic(), CreateInstance);
+  });
+}
+
+void ScriptedProcess::Terminate() {
+  PluginManager::UnregisterPlugin(ScriptedProcess::CreateInstance);
+}
+
+ConstString ScriptedProcess::GetPluginName() { return GetPluginNameStatic(); }
+
+uint32_t ScriptedProcess::GetPluginVersion() { return 1; }
+
+Status ScriptedProcess::DoLoadCore() {
+  ProcessLaunchInfo launch_info = GetTarget().GetProcessLaunchInfo();
+
+  return DoLaunch(nullptr, launch_info);
+}
+
+Status ScriptedProcess::DoLaunch(Module *exe_module,
+                                 ProcessLaunchInfo &launch_info) {
+  if (!m_interpreter)
+    return Status("No interpreter.");
+
+  if (!m_script_object_sp)
+    return Status("No python object.");
+
+  Status status = GetInterface().Launch();
+
+  if (status.Success()) {
+    SetPrivateState(eStateRunning);
+    SetPrivateState(eStateStopped);
+  }
+
+  return status;
+};
+
+void ScriptedProcess::DidLaunch() {
+  if (m_interpreter)
+    m_pid = GetInterface().GetProcessID();
+}
+
+Status ScriptedProcess::DoResume() {
+  if (!m_interpreter)
+    return Status("No interpreter.");
+
+  if (!m_script_object_sp)
+    return Status("No python object.");
+
+  Status status = GetInterface().Resume();
+
+  if (status.Success()) {
+    SetPrivateState(eStateRunning);
+    SetPrivateState(eStateStopped);
+  }
+
+  return status;
+}
+
+Status ScriptedProcess::DoDestroy() { return Status(); }
+
+bool ScriptedProcess::IsAlive() {
+  if (!m_interpreter)
+    return false;
+
+  return GetInterface().IsAlive();
+}
+
+size_t ScriptedProcess::ReadMemory(lldb::addr_t addr, void *buf, size_t size,
+                                   Status &error) {
+  return DoReadMemory(addr, buf, size, error);
+}
+
+size_t ScriptedProcess::DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
+                                     Status &error) {
+
+  auto error_with_message = [&error](llvm::StringRef message) {
+    error.SetErrorString(message);
+    return LLDB_INVALID_ADDRESS;
+  };
+
+  if (!m_interpreter)
+    return error_with_message("No interpreter.");
+
+  lldb::DataExtractorSP data_extractor_sp =
+      GetInterface().ReadMemoryAtAddress(addr, size, error);
+
+  if (!data_extractor_sp || error.Fail())
+    return LLDB_INVALID_ADDRESS;
+
+  if (data_extractor_sp->GetByteSize() != size)
+    return error_with_message("Failed to read requested memory size.");
+
+  offset_t bytes_copied = data_extractor_sp->CopyByteOrderedData(
+      0, size, buf, size, GetByteOrder());
+
+  if (!bytes_copied || bytes_copied == LLDB_INVALID_OFFSET)
+    return error_with_message("Failed to copy read memory to buffer.");
+
+  return size;
+}
+
+ArchSpec ScriptedProcess::GetArchitecture() {
+  return GetTarget().GetArchitecture();
+}
+
+Status ScriptedProcess::GetMemoryRegionInfo(lldb::addr_t load_addr,
+                                            MemoryRegionInfo &region) {
+  return Status();
+}
+
+Status ScriptedProcess::GetMemoryRegions(MemoryRegionInfos &region_list) {
+  Status error;
+
+  if (!m_interpreter) {
+    error.SetErrorString("No interpreter.");
+    return error;
+  }
+
+  lldb::addr_t address = 0;
+  lldb::MemoryRegionInfoSP mem_region_sp = nullptr;
+
+  while ((mem_region_sp =
+              GetInterface().GetMemoryRegionContainingAddress(address))) {
+    auto range = mem_region_sp->GetRange();
+    address += range.GetRangeBase() + range.GetByteSize();
+    region_list.push_back(*mem_region_sp.get());
+  }
+
+  return error;
+}
+
+void ScriptedProcess::Clear() { Process::m_thread_list.Clear(); }
+
+bool ScriptedProcess::DoUpdateThreadList(ThreadList &old_thread_list,
+                                         ThreadList &new_thread_list) {
+  return new_thread_list.GetSize(false) > 0;
+}
+
+bool ScriptedProcess::GetProcessInfo(ProcessInstanceInfo &info) {
+  info.Clear();
+  info.SetProcessID(GetID());
+  info.SetArchitecture(GetArchitecture());
+  lldb::ModuleSP module_sp = GetTarget().GetExecutableModule();
+  if (module_sp) {
+    const bool add_exe_file_as_first_arg = false;
+    info.SetExecutableFile(GetTarget().GetExecutableModule()->GetFileSpec(),
+                           add_exe_file_as_first_arg);
+  }
+  return true;
+}
+
+ScriptedProcessInterface &ScriptedProcess::GetInterface() const {
+  return m_interpreter->GetScriptedProcessInterface();
+}