58efc426d7
In order to support the Microsoft ABI alongside the Itanium one in the same process from different DLLs, this moves the Itanium ABI runtime plugin to the C++ language runtime (see https://github.com/llvm/llvm-project/pull/168941#discussion_r2547684264). Before this PR, the C++ language runtime wasn't a plugin. Instead, its functionality was provided by the Itanium ABI plugin. All Itanium specific methods are moved to a new class `ItaniumABIRuntime`. This includes resolving the dynamic type, setting exception filters, and getting the exception object. The other methods were added to `CPPLanguageRuntime`. `language cplusplus demangle` moved to `CommandObjectCPlusPlus`. The Clang REPL depended on the C++ runtime. Now that it's a plugin, this failed the layering check. Since the REPL doesn't use the C++ runtime, I removed the dependency.
152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
//===-- CPPLanguageRuntime.h
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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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#ifndef LLDB_SOURCE_PLUGINS_LANGUAGERUNTIME_CPLUSPLUS_CPPLANGUAGERUNTIME_H
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#define LLDB_SOURCE_PLUGINS_LANGUAGERUNTIME_CPLUSPLUS_CPPLANGUAGERUNTIME_H
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#include <vector>
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#include "llvm/ADT/StringMap.h"
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#include "ItaniumABIRuntime.h"
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#include "lldb/Core/PluginInterface.h"
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#include "lldb/Target/LanguageRuntime.h"
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#include "lldb/lldb-private.h"
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namespace lldb_private {
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class CPPLanguageRuntime : public LanguageRuntime {
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public:
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enum class LibCppStdFunctionCallableCase {
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Lambda = 0,
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CallableObject,
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FreeOrMemberFunction,
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Invalid
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};
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struct LibCppStdFunctionCallableInfo {
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Symbol callable_symbol;
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Address callable_address;
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LineEntry callable_line_entry;
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lldb::addr_t member_f_pointer_value = 0u;
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LibCppStdFunctionCallableCase callable_case =
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LibCppStdFunctionCallableCase::Invalid;
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};
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LibCppStdFunctionCallableInfo
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FindLibCppStdFunctionCallableInfo(lldb::ValueObjectSP &valobj_sp);
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static char ID;
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static void Initialize();
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static void Terminate();
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static lldb_private::LanguageRuntime *
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CreateInstance(Process *process, lldb::LanguageType language);
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static llvm::StringRef GetPluginNameStatic() {
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return "cpp-language-runtime";
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}
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llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
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bool isA(const void *ClassID) const override {
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return ClassID == &ID || LanguageRuntime::isA(ClassID);
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}
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static bool classof(const LanguageRuntime *runtime) {
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return runtime->isA(&ID);
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}
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lldb::LanguageType GetLanguageType() const override {
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return lldb::eLanguageTypeC_plus_plus;
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}
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static CPPLanguageRuntime *Get(Process &process) {
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return llvm::cast_or_null<CPPLanguageRuntime>(
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process.GetLanguageRuntime(lldb::eLanguageTypeC_plus_plus));
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}
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llvm::Error GetObjectDescription(Stream &str, ValueObject &object) override;
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llvm::Error GetObjectDescription(Stream &str, Value &value,
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ExecutionContextScope *exe_scope) override;
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/// Obtain a ThreadPlan to get us into C++ constructs such as std::function.
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///
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/// \param[in] thread
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/// Current thrad of execution.
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///
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/// \param[in] stop_others
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/// True if other threads should pause during execution.
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///
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/// \return
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/// A ThreadPlan Shared pointer
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lldb::ThreadPlanSP GetStepThroughTrampolinePlan(Thread &thread,
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bool stop_others) override;
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bool IsAllowedRuntimeValue(ConstString name) override;
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bool IsSymbolARuntimeThunk(const Symbol &symbol) override;
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llvm::Expected<LanguageRuntime::VTableInfo>
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GetVTableInfo(ValueObject &in_value, bool check_type) override;
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bool GetDynamicTypeAndAddress(ValueObject &in_value,
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lldb::DynamicValueType use_dynamic,
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TypeAndOrName &class_type_or_name,
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Address &address, Value::ValueType &value_type,
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llvm::ArrayRef<uint8_t> &local_buffer) override;
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TypeAndOrName FixUpDynamicType(const TypeAndOrName &type_and_or_name,
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ValueObject &static_value) override;
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bool CouldHaveDynamicValue(ValueObject &in_value) override;
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void SetExceptionBreakpoints() override;
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void ClearExceptionBreakpoints() override;
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bool ExceptionBreakpointsAreSet() override;
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bool ExceptionBreakpointsExplainStop(lldb::StopInfoSP stop_reason) override;
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lldb::BreakpointResolverSP
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CreateExceptionResolver(const lldb::BreakpointSP &bkpt, bool catch_bp,
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bool throw_bp) override;
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lldb::SearchFilterSP CreateExceptionSearchFilter() override;
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lldb::ValueObjectSP
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GetExceptionObjectForThread(lldb::ThreadSP thread_sp) override;
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private:
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CPPLanguageRuntime(Process *process);
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lldb::BreakpointResolverSP
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CreateExceptionResolver(const lldb::BreakpointSP &bkpt, bool catch_bp,
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bool throw_bp, bool for_expressions);
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lldb::BreakpointSP CreateExceptionBreakpoint(bool catch_bp, bool throw_bp,
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bool for_expressions,
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bool is_internal);
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using OperatorStringToCallableInfoMap =
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llvm::StringMap<CPPLanguageRuntime::LibCppStdFunctionCallableInfo>;
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OperatorStringToCallableInfoMap CallableLookupCache;
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lldb::BreakpointSP m_cxx_exception_bp_sp;
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ItaniumABIRuntime m_itanium_runtime;
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};
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} // namespace lldb_private
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#endif // LLDB_SOURCE_PLUGINS_LANGUAGERUNTIME_CPLUSPLUS_CPPLANGUAGERUNTIME_H
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