1 //===-- ItaniumABILanguageRuntime.h -----------------------------*- C++ -*-===//
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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLDB_SOURCE_PLUGINS_LANGUAGERUNTIME_CPLUSPLUS_ITANIUMABI_ITANIUMABILANGUAGERUNTIME_H
10 #define LLDB_SOURCE_PLUGINS_LANGUAGERUNTIME_CPLUSPLUS_ITANIUMABI_ITANIUMABILANGUAGERUNTIME_H
11 
12 #include <map>
13 #include <mutex>
14 #include <vector>
15 
16 #include "lldb/Breakpoint/BreakpointResolver.h"
17 #include "lldb/Core/Value.h"
18 #include "lldb/Symbol/Type.h"
19 #include "lldb/Target/LanguageRuntime.h"
20 #include "lldb/lldb-private.h"
21 
22 #include "Plugins/LanguageRuntime/CPlusPlus/CPPLanguageRuntime.h"
23 
24 namespace lldb_private {
25 
26 class ItaniumABILanguageRuntime : public lldb_private::CPPLanguageRuntime {
27 public:
28   ~ItaniumABILanguageRuntime() override = default;
29 
30   // Static Functions
31   static void Initialize();
32 
33   static void Terminate();
34 
35   static lldb_private::LanguageRuntime *
36   CreateInstance(Process *process, lldb::LanguageType language);
37 
38   static lldb_private::ConstString GetPluginNameStatic();
39 
40   static char ID;
41 
isA(const void * ClassID)42   bool isA(const void *ClassID) const override {
43     return ClassID == &ID || CPPLanguageRuntime::isA(ClassID);
44   }
45 
classof(const LanguageRuntime * runtime)46   static bool classof(const LanguageRuntime *runtime) {
47     return runtime->isA(&ID);
48   }
49 
50   bool GetDynamicTypeAndAddress(ValueObject &in_value,
51                                 lldb::DynamicValueType use_dynamic,
52                                 TypeAndOrName &class_type_or_name,
53                                 Address &address,
54                                 Value::ValueType &value_type) override;
55 
56   TypeAndOrName FixUpDynamicType(const TypeAndOrName &type_and_or_name,
57                                  ValueObject &static_value) override;
58 
59   bool CouldHaveDynamicValue(ValueObject &in_value) override;
60 
61   void SetExceptionBreakpoints() override;
62 
63   void ClearExceptionBreakpoints() override;
64 
65   bool ExceptionBreakpointsAreSet() override;
66 
67   bool ExceptionBreakpointsExplainStop(lldb::StopInfoSP stop_reason) override;
68 
69   lldb::BreakpointResolverSP
70   CreateExceptionResolver(const lldb::BreakpointSP &bkpt,
71                           bool catch_bp, bool throw_bp) override;
72 
73   lldb::SearchFilterSP CreateExceptionSearchFilter() override;
74 
75   lldb::ValueObjectSP GetExceptionObjectForThread(
76       lldb::ThreadSP thread_sp) override;
77 
78   // PluginInterface protocol
79   lldb_private::ConstString GetPluginName() override;
80 
81   uint32_t GetPluginVersion() override;
82 
83 protected:
84   lldb::BreakpointResolverSP
85   CreateExceptionResolver(const lldb::BreakpointSP &bkpt,
86                           bool catch_bp, bool throw_bp, bool for_expressions);
87 
88   lldb::BreakpointSP CreateExceptionBreakpoint(bool catch_bp, bool throw_bp,
89                                                bool for_expressions,
90                                                bool is_internal);
91 
92 private:
93   typedef std::map<lldb_private::Address, TypeAndOrName> DynamicTypeCache;
94 
ItaniumABILanguageRuntime(Process * process)95   ItaniumABILanguageRuntime(Process *process)
96       : // Call CreateInstance instead.
97         lldb_private::CPPLanguageRuntime(process), m_cxx_exception_bp_sp(),
98         m_dynamic_type_map(), m_dynamic_type_map_mutex() {}
99 
100   lldb::BreakpointSP m_cxx_exception_bp_sp;
101   DynamicTypeCache m_dynamic_type_map;
102   std::mutex m_dynamic_type_map_mutex;
103 
104   TypeAndOrName GetTypeInfoFromVTableAddress(ValueObject &in_value,
105                                              lldb::addr_t original_ptr,
106                                              lldb::addr_t vtable_addr);
107 
108   TypeAndOrName GetDynamicTypeInfo(const lldb_private::Address &vtable_addr);
109 
110   void SetDynamicTypeInfo(const lldb_private::Address &vtable_addr,
111                           const TypeAndOrName &type_info);
112 };
113 
114 } // namespace lldb_private
115 
116 #endif // LLDB_SOURCE_PLUGINS_LANGUAGERUNTIME_CPLUSPLUS_ITANIUMABI_ITANIUMABILANGUAGERUNTIME_H
117