| //===-- DynamicLoaderPOSIXDYLD.h --------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef liblldb_DynamicLoaderPOSIXDYLD_h_ |
| #define liblldb_DynamicLoaderPOSIXDYLD_h_ |
| |
| // C Includes |
| // C++ Includes |
| #include <map> |
| #include <memory> |
| |
| // Other libraries and framework includes |
| // Project includes |
| #include "DYLDRendezvous.h" |
| #include "lldb/Breakpoint/StoppointCallbackContext.h" |
| #include "lldb/Core/ModuleList.h" |
| #include "lldb/Target/DynamicLoader.h" |
| |
| class AuxVector; |
| |
| class DynamicLoaderPOSIXDYLD : public lldb_private::DynamicLoader { |
| public: |
| DynamicLoaderPOSIXDYLD(lldb_private::Process *process); |
| |
| ~DynamicLoaderPOSIXDYLD() override; |
| |
| static void Initialize(); |
| |
| static void Terminate(); |
| |
| static lldb_private::ConstString GetPluginNameStatic(); |
| |
| static const char *GetPluginDescriptionStatic(); |
| |
| static lldb_private::DynamicLoader * |
| CreateInstance(lldb_private::Process *process, bool force); |
| |
| //------------------------------------------------------------------ |
| // DynamicLoader protocol |
| //------------------------------------------------------------------ |
| |
| void DidAttach() override; |
| |
| void DidLaunch() override; |
| |
| lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread, |
| bool stop_others) override; |
| |
| lldb_private::Status CanLoadImage() override; |
| |
| lldb::addr_t GetThreadLocalData(const lldb::ModuleSP module, |
| const lldb::ThreadSP thread, |
| lldb::addr_t tls_file_addr) override; |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| lldb_private::ConstString GetPluginName() override; |
| |
| uint32_t GetPluginVersion() override; |
| |
| protected: |
| /// Runtime linker rendezvous structure. |
| DYLDRendezvous m_rendezvous; |
| |
| /// Virtual load address of the inferior process. |
| lldb::addr_t m_load_offset; |
| |
| /// Virtual entry address of the inferior process. |
| lldb::addr_t m_entry_point; |
| |
| /// Auxiliary vector of the inferior process. |
| std::unique_ptr<AuxVector> m_auxv; |
| |
| /// Rendezvous breakpoint. |
| lldb::break_id_t m_dyld_bid; |
| |
| /// Contains AT_SYSINFO_EHDR, which means a vDSO has been |
| /// mapped to the address space |
| lldb::addr_t m_vdso_base; |
| |
| /// Contains AT_BASE, which means a dynamic loader has been |
| /// mapped to the address space |
| lldb::addr_t m_interpreter_base; |
| |
| /// Loaded module list. (link map for each module) |
| std::map<lldb::ModuleWP, lldb::addr_t, std::owner_less<lldb::ModuleWP>> |
| m_loaded_modules; |
| |
| /// If possible sets a breakpoint on a function called by the runtime |
| /// linker each time a module is loaded or unloaded. |
| bool SetRendezvousBreakpoint(); |
| |
| /// Callback routine which updates the current list of loaded modules based |
| /// on the information supplied by the runtime linker. |
| static bool RendezvousBreakpointHit( |
| void *baton, lldb_private::StoppointCallbackContext *context, |
| lldb::user_id_t break_id, lldb::user_id_t break_loc_id); |
| |
| /// Helper method for RendezvousBreakpointHit. Updates LLDB's current set |
| /// of loaded modules. |
| void RefreshModules(); |
| |
| /// Updates the load address of every allocatable section in @p module. |
| /// |
| /// @param module The module to traverse. |
| /// |
| /// @param link_map_addr The virtual address of the link map for the @p |
| /// module. |
| /// |
| /// @param base_addr The virtual base address @p module is loaded at. |
| void UpdateLoadedSections(lldb::ModuleSP module, lldb::addr_t link_map_addr, |
| lldb::addr_t base_addr, |
| bool base_addr_is_offset) override; |
| |
| /// Removes the loaded sections from the target in @p module. |
| /// |
| /// @param module The module to traverse. |
| void UnloadSections(const lldb::ModuleSP module) override; |
| |
| /// Resolves the entry point for the current inferior process and sets a |
| /// breakpoint at that address. |
| void ProbeEntry(); |
| |
| /// Callback routine invoked when we hit the breakpoint on process entry. |
| /// |
| /// This routine is responsible for resolving the load addresses of all |
| /// dependent modules required by the inferior and setting up the rendezvous |
| /// breakpoint. |
| static bool |
| EntryBreakpointHit(void *baton, |
| lldb_private::StoppointCallbackContext *context, |
| lldb::user_id_t break_id, lldb::user_id_t break_loc_id); |
| |
| /// Helper for the entry breakpoint callback. Resolves the load addresses |
| /// of all dependent modules. |
| virtual void LoadAllCurrentModules(); |
| |
| void LoadVDSO(); |
| |
| // Loading an interpreter module (if present) assumming m_interpreter_base |
| // already points to its base address. |
| lldb::ModuleSP LoadInterpreterModule(); |
| |
| /// Computes a value for m_load_offset returning the computed address on |
| /// success and LLDB_INVALID_ADDRESS on failure. |
| lldb::addr_t ComputeLoadOffset(); |
| |
| /// Computes a value for m_entry_point returning the computed address on |
| /// success and LLDB_INVALID_ADDRESS on failure. |
| lldb::addr_t GetEntryPoint(); |
| |
| /// Evaluate if Aux vectors contain vDSO and LD information |
| /// in case they do, read and assign the address to m_vdso_base |
| /// and m_interpreter_base. |
| void EvalSpecialModulesStatus(); |
| |
| /// Loads Module from inferior process. |
| void ResolveExecutableModule(lldb::ModuleSP &module_sp); |
| |
| bool AlwaysRelyOnEHUnwindInfo(lldb_private::SymbolContext &sym_ctx) override; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DynamicLoaderPOSIXDYLD); |
| }; |
| |
| #endif // liblldb_DynamicLoaderPOSIXDYLD_h_ |