[lldb/Commands] Add scripting template list command with auto discovery (#97273)
This patch introduces a new `template` multiword sub-command to the `scripting` top-level command. As the name suggests, this sub-command operates on scripting templates, and currently has the ability to automatically discover the various scripting extensions that lldb supports. Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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//===-- ScriptedProcessPythonInterface.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 "lldb/Host/Config.h"
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#if LLDB_ENABLE_PYTHON
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// LLDB Python header must be included first
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#include "../lldb-python.h"
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#endif
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#include "lldb/Target/Process.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/Status.h"
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#include "lldb/lldb-enumerations.h"
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#if LLDB_ENABLE_PYTHON
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#include "../SWIGPythonBridge.h"
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#include "../ScriptInterpreterPythonImpl.h"
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#include "ScriptedProcessPythonInterface.h"
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#include "ScriptedThreadPythonInterface.h"
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#include <optional>
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::python;
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using Locker = ScriptInterpreterPythonImpl::Locker;
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ScriptedProcessPythonInterface::ScriptedProcessPythonInterface(
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ScriptInterpreterPythonImpl &interpreter)
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: ScriptedProcessInterface(), ScriptedPythonInterface(interpreter) {}
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llvm::Expected<StructuredData::GenericSP>
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ScriptedProcessPythonInterface::CreatePluginObject(
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llvm::StringRef class_name, ExecutionContext &exe_ctx,
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StructuredData::DictionarySP args_sp, StructuredData::Generic *script_obj) {
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ExecutionContextRefSP exe_ctx_ref_sp =
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std::make_shared<ExecutionContextRef>(exe_ctx);
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StructuredDataImpl sd_impl(args_sp);
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return ScriptedPythonInterface::CreatePluginObject(class_name, script_obj,
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exe_ctx_ref_sp, sd_impl);
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}
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StructuredData::DictionarySP ScriptedProcessPythonInterface::GetCapabilities() {
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Status error;
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StructuredData::DictionarySP dict =
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Dispatch<StructuredData::DictionarySP>("get_capabilities", error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, dict,
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error))
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return {};
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return dict;
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}
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Status
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ScriptedProcessPythonInterface::Attach(const ProcessAttachInfo &attach_info) {
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lldb::ProcessAttachInfoSP attach_info_sp =
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std::make_shared<ProcessAttachInfo>(attach_info);
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return GetStatusFromMethod("attach", attach_info_sp);
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}
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Status ScriptedProcessPythonInterface::Launch() {
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return GetStatusFromMethod("launch");
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}
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Status ScriptedProcessPythonInterface::Resume() {
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// When calling ScriptedProcess.Resume from lldb we should always stop.
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return GetStatusFromMethod("resume", /*should_stop=*/true);
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}
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std::optional<MemoryRegionInfo>
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ScriptedProcessPythonInterface::GetMemoryRegionContainingAddress(
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lldb::addr_t address, Status &error) {
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auto mem_region = Dispatch<std::optional<MemoryRegionInfo>>(
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"get_memory_region_containing_address", error, address);
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if (error.Fail()) {
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return ErrorWithMessage<MemoryRegionInfo>(LLVM_PRETTY_FUNCTION,
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error.AsCString(), error);
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}
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return mem_region;
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}
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StructuredData::DictionarySP ScriptedProcessPythonInterface::GetThreadsInfo() {
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Status error;
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StructuredData::DictionarySP dict =
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Dispatch<StructuredData::DictionarySP>("get_threads_info", error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, dict,
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error))
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return {};
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return dict;
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}
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bool ScriptedProcessPythonInterface::CreateBreakpoint(lldb::addr_t addr,
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Status &error) {
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Status py_error;
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StructuredData::ObjectSP obj =
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Dispatch("create_breakpoint", py_error, addr, error);
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// If there was an error on the python call, surface it to the user.
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if (py_error.Fail())
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error = py_error;
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, obj,
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error))
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return {};
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return obj->GetBooleanValue();
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}
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lldb::DataExtractorSP ScriptedProcessPythonInterface::ReadMemoryAtAddress(
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lldb::addr_t address, size_t size, Status &error) {
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Status py_error;
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lldb::DataExtractorSP data_sp = Dispatch<lldb::DataExtractorSP>(
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"read_memory_at_address", py_error, address, size, error);
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// If there was an error on the python call, surface it to the user.
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if (py_error.Fail())
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error = py_error;
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return data_sp;
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}
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lldb::offset_t ScriptedProcessPythonInterface::WriteMemoryAtAddress(
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lldb::addr_t addr, lldb::DataExtractorSP data_sp, Status &error) {
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Status py_error;
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StructuredData::ObjectSP obj =
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Dispatch("write_memory_at_address", py_error, addr, data_sp, error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, obj,
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error))
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return LLDB_INVALID_OFFSET;
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// If there was an error on the python call, surface it to the user.
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if (py_error.Fail())
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error = py_error;
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return obj->GetUnsignedIntegerValue(LLDB_INVALID_OFFSET);
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}
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StructuredData::ArraySP ScriptedProcessPythonInterface::GetLoadedImages() {
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Status error;
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StructuredData::ArraySP array =
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Dispatch<StructuredData::ArraySP>("get_loaded_images", error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, array,
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error))
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return {};
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return array;
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}
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lldb::pid_t ScriptedProcessPythonInterface::GetProcessID() {
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Status error;
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StructuredData::ObjectSP obj = Dispatch("get_process_id", error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, obj,
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error))
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return LLDB_INVALID_PROCESS_ID;
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return obj->GetUnsignedIntegerValue(LLDB_INVALID_PROCESS_ID);
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}
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bool ScriptedProcessPythonInterface::IsAlive() {
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Status error;
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StructuredData::ObjectSP obj = Dispatch("is_alive", error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, obj,
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error))
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return {};
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return obj->GetBooleanValue();
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}
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std::optional<std::string>
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ScriptedProcessPythonInterface::GetScriptedThreadPluginName() {
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Status error;
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StructuredData::ObjectSP obj = Dispatch("get_scripted_thread_plugin", error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, obj,
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error))
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return {};
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return obj->GetStringValue().str();
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}
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lldb::ScriptedThreadInterfaceSP
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ScriptedProcessPythonInterface::CreateScriptedThreadInterface() {
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return m_interpreter.CreateScriptedThreadInterface();
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}
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StructuredData::DictionarySP ScriptedProcessPythonInterface::GetMetadata() {
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Status error;
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StructuredData::DictionarySP dict =
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Dispatch<StructuredData::DictionarySP>("get_process_metadata", error);
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if (!ScriptedInterface::CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, dict,
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error))
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return {};
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return dict;
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}
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#endif
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