1 //===-- RenderScriptRuntime.h -----------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef liblldb_RenderScriptRuntime_h_
11 #define liblldb_RenderScriptRuntime_h_
12 
13 // C Includes
14 // C++ Includes
15 // Other libraries and framework includes
16 // Project includes
17 #include "lldb/lldb-private.h"
18 #include "lldb/Target/LanguageRuntime.h"
19 #include "lldb/Target/CPPLanguageRuntime.h"
20 #include "lldb/Core/Module.h"
21 
22 namespace lldb_private
23 {
24 
25 namespace lldb_renderscript
26 {
27 
28 typedef uint32_t RSSlot;
29 class RSModuleDescriptor;
30 struct RSGlobalDescriptor;
31 struct RSKernelDescriptor;
32 
33 typedef std::shared_ptr<RSModuleDescriptor> RSModuleDescriptorSP;
34 typedef std::shared_ptr<RSGlobalDescriptor> RSGlobalDescriptorSP;
35 typedef std::shared_ptr<RSKernelDescriptor> RSKernelDescriptorSP;
36 
37 // Breakpoint Resolvers decide where a breakpoint is placed,
38 // so having our own allows us to limit the search scope to RS kernel modules.
39 // As well as check for .expand kernels as a fallback.
40 class RSBreakpointResolver : public BreakpointResolver
41 {
42   public:
43 
44     RSBreakpointResolver(Breakpoint *bkpt, ConstString name):
45                          BreakpointResolver (bkpt, BreakpointResolver::NameResolver),
46                          m_kernel_name(name)
47     {
48     }
49 
50     void
51     GetDescription(Stream *strm) override
52     {
53         if (strm)
54             strm->Printf("RenderScript kernel breakpoint for '%s'", m_kernel_name.AsCString());
55     }
56 
57     void
58     Dump(Stream *s) const override
59     {
60     }
61 
62     Searcher::CallbackReturn
63     SearchCallback(SearchFilter &filter,
64                    SymbolContext &context,
65                    Address *addr,
66                    bool containing) override;
67 
68     Searcher::Depth
69     GetDepth() override
70     {
71         return Searcher::eDepthModule;
72     }
73 
74     lldb::BreakpointResolverSP
75     CopyForBreakpoint(Breakpoint &breakpoint) override
76     {
77         lldb::BreakpointResolverSP ret_sp(new RSBreakpointResolver(&breakpoint, m_kernel_name));
78         return ret_sp;
79     }
80 
81   protected:
82     ConstString m_kernel_name;
83 };
84 
85 struct RSKernelDescriptor
86 {
87   public:
88     RSKernelDescriptor(const RSModuleDescriptor *module, const char *name, uint32_t slot)
89         : m_module(module)
90         , m_name(name)
91         , m_slot(slot)
92     {
93     }
94 
95     void Dump(Stream &strm) const;
96 
97     const RSModuleDescriptor *m_module;
98     ConstString m_name;
99     RSSlot m_slot;
100 };
101 
102 struct RSGlobalDescriptor
103 {
104   public:
105     RSGlobalDescriptor(const RSModuleDescriptor *module, const char *name )
106         : m_module(module)
107         , m_name(name)
108     {
109     }
110 
111     void Dump(Stream &strm) const;
112 
113     const RSModuleDescriptor *m_module;
114     ConstString m_name;
115 };
116 
117 class RSModuleDescriptor
118 {
119   public:
120     RSModuleDescriptor(const lldb::ModuleSP &module)
121         : m_module(module)
122     {
123     }
124 
125     ~RSModuleDescriptor() {}
126 
127     bool ParseRSInfo();
128 
129     void Dump(Stream &strm) const;
130 
131     const lldb::ModuleSP m_module;
132     std::vector<RSKernelDescriptor> m_kernels;
133     std::vector<RSGlobalDescriptor> m_globals;
134     std::map<std::string, std::string> m_pragmas;
135     std::string m_resname;
136 };
137 
138 } // end lldb_renderscript namespace
139 
140 class RenderScriptRuntime : public lldb_private::CPPLanguageRuntime
141 {
142   public:
143 
144     enum ModuleKind
145     {
146         eModuleKindIgnored,
147         eModuleKindLibRS,
148         eModuleKindDriver,
149         eModuleKindImpl,
150         eModuleKindKernelObj
151     };
152 
153     ~RenderScriptRuntime();
154 
155     //------------------------------------------------------------------
156     // Static Functions
157     //------------------------------------------------------------------
158     static void Initialize();
159 
160     static void Terminate();
161 
162     static lldb_private::LanguageRuntime *CreateInstance(Process *process, lldb::LanguageType language);
163 
164     static lldb::CommandObjectSP GetCommandObject(CommandInterpreter& interpreter);
165 
166     static lldb_private::ConstString GetPluginNameStatic();
167 
168     static bool IsRenderScriptModule(const lldb::ModuleSP &module_sp);
169 
170     static ModuleKind GetModuleKind(const lldb::ModuleSP &module_sp);
171 
172     static void ModulesDidLoad(const lldb::ProcessSP& process_sp, const ModuleList &module_list );
173 
174     //------------------------------------------------------------------
175     // PluginInterface protocol
176     //------------------------------------------------------------------
177     virtual lldb_private::ConstString GetPluginName();
178 
179     virtual uint32_t GetPluginVersion();
180 
181     virtual bool IsVTableName(const char *name);
182 
183     virtual bool GetDynamicTypeAndAddress(ValueObject &in_value, lldb::DynamicValueType use_dynamic,
184                                           TypeAndOrName &class_type_or_name, Address &address,
185                                           Value::ValueType &value_type);
186 
187     virtual TypeAndOrName
188     FixUpDynamicType (const TypeAndOrName& type_and_or_name,
189                       ValueObject& static_value);
190 
191     virtual bool CouldHaveDynamicValue(ValueObject &in_value);
192 
193     virtual lldb::BreakpointResolverSP CreateExceptionResolver(Breakpoint *bkpt, bool catch_bp, bool throw_bp);
194 
195     bool LoadModule(const lldb::ModuleSP &module_sp);
196 
197     bool ProbeModules(const ModuleList module_list);
198 
199     void DumpModules(Stream &strm) const;
200 
201     void DumpContexts(Stream &strm) const;
202 
203     void DumpKernels(Stream &strm) const;
204 
205     void AttemptBreakpointAtKernelName(Stream &strm, const char *name, Error &error, lldb::TargetSP target);
206 
207     void SetBreakAllKernels(bool do_break, lldb::TargetSP target);
208 
209     void Status(Stream &strm) const;
210 
211     virtual size_t GetAlternateManglings(const ConstString &mangled, std::vector<ConstString> &alternates) {
212         return static_cast<size_t>(0);
213     }
214 
215     virtual void ModulesDidLoad(const ModuleList &module_list );
216 
217     void Update();
218 
219     void Initiate();
220 
221   protected:
222 
223     void InitSearchFilter(lldb::TargetSP target)
224     {
225         if (!m_filtersp)
226             m_filtersp.reset(new SearchFilterForUnconstrainedSearches(target));
227     }
228 
229     void FixupScriptDetails(lldb_renderscript::RSModuleDescriptorSP rsmodule_sp);
230 
231     void LoadRuntimeHooks(lldb::ModuleSP module, ModuleKind kind);
232 
233     lldb::BreakpointSP CreateKernelBreakpoint(const ConstString& name);
234 
235     void BreakOnModuleKernels(const lldb_renderscript::RSModuleDescriptorSP rsmodule_sp);
236 
237     struct RuntimeHook;
238     typedef void (RenderScriptRuntime::*CaptureStateFn)(RuntimeHook* hook_info, ExecutionContext &context);  // Please do this!
239 
240     struct HookDefn
241     {
242         const char * name;
243         const char * symbol_name_m32; // mangled name for the 32 bit architectures
244         const char * symbol_name_m64; // mangled name for the 64 bit archs
245         uint32_t version;
246         ModuleKind kind;
247         CaptureStateFn grabber;
248     };
249 
250     struct RuntimeHook
251     {
252         lldb::addr_t address;
253         const HookDefn  *defn;
254         lldb::BreakpointSP bp_sp;
255     };
256 
257     typedef std::shared_ptr<RuntimeHook> RuntimeHookSP;
258 
259     struct ScriptDetails;
260     struct AllocationDetails;
261 
262     lldb::ModuleSP m_libRS;
263     lldb::ModuleSP m_libRSDriver;
264     lldb::ModuleSP m_libRSCpuRef;
265     std::vector<lldb_renderscript::RSModuleDescriptorSP> m_rsmodules;
266 
267     std::vector<std::unique_ptr<ScriptDetails>> m_scripts;
268     std::vector<std::unique_ptr<AllocationDetails>> m_allocations;
269 
270     std::map<lldb::addr_t, lldb_renderscript::RSModuleDescriptorSP> m_scriptMappings;
271     std::map<lldb::addr_t, RuntimeHookSP> m_runtimeHooks;
272 
273     lldb::SearchFilterSP m_filtersp; // Needed to create breakpoints through Target API
274 
275     bool m_initiated;
276     bool m_debuggerPresentFlagged;
277     bool m_breakAllKernels;
278     static const HookDefn s_runtimeHookDefns[];
279     static const size_t s_runtimeHookCount;
280 
281   private:
282     RenderScriptRuntime(Process *process); // Call CreateInstance instead.
283 
284     static bool HookCallback(void *baton, StoppointCallbackContext *ctx, lldb::user_id_t break_id,
285                              lldb::user_id_t break_loc_id);
286 
287     void HookCallback(RuntimeHook* hook_info, ExecutionContext& context);
288 
289     bool GetArgSimple(ExecutionContext& context, uint32_t arg, uint64_t* data);
290 
291     void CaptureScriptInit1(RuntimeHook* hook_info, ExecutionContext& context);
292     void CaptureAllocationInit1(RuntimeHook* hook_info, ExecutionContext& context);
293     void CaptureSetGlobalVar1(RuntimeHook* hook_info, ExecutionContext& context);
294 
295     // Search for a script detail object using a target address.
296     // If a script does not currently exist this function will return nullptr.
297     // If 'create' is true and there is no previous script with this address,
298     // then a new Script detail object will be created for this address and returned.
299     ScriptDetails* LookUpScript(lldb::addr_t address, bool create);
300 
301     // Search for a previously saved allocation detail object using a target address.
302     // If an allocation does not exist for this address then nullptr will be returned.
303     // If 'create' is true and there is no previous allocation then a new allocation
304     // detail object will be created for this address and returned.
305     AllocationDetails* LookUpAllocation(lldb::addr_t address, bool create);
306 };
307 
308 } // namespace lldb_private
309 
310 #endif // liblldb_RenderScriptRuntime_h_
311