diff options
Diffstat (limited to 'source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.h')
| -rw-r--r-- | source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.h | 295 |
1 files changed, 124 insertions, 171 deletions
diff --git a/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.h b/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.h index c0d1944a7f2f..dc58a8bc1eb6 100644 --- a/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.h +++ b/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.h @@ -18,190 +18,143 @@ // Other libraries and framework includes // Project includes -#include "lldb/lldb-public.h" #include "lldb/Expression/UtilityFunction.h" +#include "lldb/lldb-public.h" + +namespace lldb_private { -namespace lldb_private -{ - class AppleObjCTrampolineHandler { public: - AppleObjCTrampolineHandler (const lldb::ProcessSP &process_sp, - const lldb::ModuleSP &objc_module_sp); - - ~AppleObjCTrampolineHandler(); - - lldb::ThreadPlanSP - GetStepThroughDispatchPlan (Thread &thread, - bool stop_others); - - FunctionCaller * - GetLookupImplementationFunctionCaller (); - - bool - AddrIsMsgForward (lldb::addr_t addr) const - { - return (addr == m_msg_forward_addr || addr == m_msg_forward_stret_addr); - } - - struct DispatchFunction { - public: - typedef enum - { - eFixUpNone, - eFixUpFixed, - eFixUpToFix - } FixUpState; - - const char *name; - bool stret_return; - bool is_super; - bool is_super2; - FixUpState fixedup; - }; + AppleObjCTrampolineHandler(const lldb::ProcessSP &process_sp, + const lldb::ModuleSP &objc_module_sp); + + ~AppleObjCTrampolineHandler(); + + lldb::ThreadPlanSP GetStepThroughDispatchPlan(Thread &thread, + bool stop_others); + + FunctionCaller *GetLookupImplementationFunctionCaller(); + + bool AddrIsMsgForward(lldb::addr_t addr) const { + return (addr == m_msg_forward_addr || addr == m_msg_forward_stret_addr); + } - lldb::addr_t - SetupDispatchFunction (Thread &thread, ValueList &dispatch_values); + struct DispatchFunction { + public: + typedef enum { eFixUpNone, eFixUpFixed, eFixUpToFix } FixUpState; + + const char *name; + bool stret_return; + bool is_super; + bool is_super2; + FixUpState fixedup; + }; + + lldb::addr_t SetupDispatchFunction(Thread &thread, + ValueList &dispatch_values); private: - static const char *g_lookup_implementation_function_name; - static const char *g_lookup_implementation_with_stret_function_code; - static const char *g_lookup_implementation_no_stret_function_code; + static const char *g_lookup_implementation_function_name; + static const char *g_lookup_implementation_with_stret_function_code; + static const char *g_lookup_implementation_no_stret_function_code; + + class AppleObjCVTables { + public: + // These come from objc-gdb.h. + enum VTableFlags { + eOBJC_TRAMPOLINE_MESSAGE = (1 << 0), // trampoline acts like objc_msgSend + eOBJC_TRAMPOLINE_STRET = (1 << 1), // trampoline is struct-returning + eOBJC_TRAMPOLINE_VTABLE = (1 << 2) // trampoline is vtable dispatcher + }; + + private: + struct VTableDescriptor { + VTableDescriptor(uint32_t in_flags, lldb::addr_t in_code_start) + : flags(in_flags), code_start(in_code_start) {} - class AppleObjCVTables - { + uint32_t flags; + lldb::addr_t code_start; + }; + + class VTableRegion { public: - // These come from objc-gdb.h. - enum VTableFlags - { - eOBJC_TRAMPOLINE_MESSAGE = (1<<0), // trampoline acts like objc_msgSend - eOBJC_TRAMPOLINE_STRET = (1<<1), // trampoline is struct-returning - eOBJC_TRAMPOLINE_VTABLE = (1<<2) // trampoline is vtable dispatcher - }; - - private: - struct VTableDescriptor - { - VTableDescriptor(uint32_t in_flags, lldb::addr_t in_code_start) : - flags(in_flags), - code_start(in_code_start) {} - - uint32_t flags; - lldb::addr_t code_start; - }; - - class VTableRegion - { - public: - VTableRegion() : - m_valid (false), - m_owner (NULL), - m_header_addr (LLDB_INVALID_ADDRESS), - m_code_start_addr(0), - m_code_end_addr (0), - m_next_region (0) - {} - - VTableRegion(AppleObjCVTables *owner, lldb::addr_t header_addr); - - void SetUpRegion(); - - lldb::addr_t GetNextRegionAddr () - { - return m_next_region; - } - - lldb::addr_t - GetCodeStart () - { - return m_code_start_addr; - } - - lldb::addr_t - GetCodeEnd () - { - return m_code_end_addr; - } - - uint32_t - GetFlagsForVTableAtAddress (lldb::addr_t address) - { - return 0; - } - - bool - IsValid () - { - return m_valid; - } - - bool - AddressInRegion (lldb::addr_t addr, uint32_t &flags); - - void - Dump (Stream &s); - - public: - bool m_valid; - AppleObjCVTables *m_owner; - lldb::addr_t m_header_addr; - lldb::addr_t m_code_start_addr; - lldb::addr_t m_code_end_addr; - std::vector<VTableDescriptor> m_descriptors; - lldb::addr_t m_next_region; - }; - + VTableRegion() + : m_valid(false), m_owner(NULL), m_header_addr(LLDB_INVALID_ADDRESS), + m_code_start_addr(0), m_code_end_addr(0), m_next_region(0) {} + + VTableRegion(AppleObjCVTables *owner, lldb::addr_t header_addr); + + void SetUpRegion(); + + lldb::addr_t GetNextRegionAddr() { return m_next_region; } + + lldb::addr_t GetCodeStart() { return m_code_start_addr; } + + lldb::addr_t GetCodeEnd() { return m_code_end_addr; } + + uint32_t GetFlagsForVTableAtAddress(lldb::addr_t address) { return 0; } + + bool IsValid() { return m_valid; } + + bool AddressInRegion(lldb::addr_t addr, uint32_t &flags); + + void Dump(Stream &s); + public: - AppleObjCVTables(const lldb::ProcessSP &process_sp, - const lldb::ModuleSP &objc_module_sp); - - ~AppleObjCVTables(); - - bool - InitializeVTableSymbols (); - - static bool RefreshTrampolines (void *baton, - StoppointCallbackContext *context, - lldb::user_id_t break_id, - lldb::user_id_t break_loc_id); - bool - ReadRegions (); - - bool - ReadRegions (lldb::addr_t region_addr); - - bool - IsAddressInVTables (lldb::addr_t addr, uint32_t &flags); - - lldb::ProcessSP - GetProcessSP () - { - return m_process_wp.lock(); - } - - private: - lldb::ProcessWP m_process_wp; - typedef std::vector<VTableRegion> region_collection; - lldb::addr_t m_trampoline_header; - lldb::break_id_t m_trampolines_changed_bp_id; - region_collection m_regions; - lldb::ModuleSP m_objc_module_sp; + bool m_valid; + AppleObjCVTables *m_owner; + lldb::addr_t m_header_addr; + lldb::addr_t m_code_start_addr; + lldb::addr_t m_code_end_addr; + std::vector<VTableDescriptor> m_descriptors; + lldb::addr_t m_next_region; }; - - static const DispatchFunction g_dispatch_functions[]; - - typedef std::map<lldb::addr_t, int> MsgsendMap; // This table maps an dispatch fn address to the index in g_dispatch_functions - MsgsendMap m_msgSend_map; + + public: + AppleObjCVTables(const lldb::ProcessSP &process_sp, + const lldb::ModuleSP &objc_module_sp); + + ~AppleObjCVTables(); + + bool InitializeVTableSymbols(); + + static bool RefreshTrampolines(void *baton, + StoppointCallbackContext *context, + lldb::user_id_t break_id, + lldb::user_id_t break_loc_id); + bool ReadRegions(); + + bool ReadRegions(lldb::addr_t region_addr); + + bool IsAddressInVTables(lldb::addr_t addr, uint32_t &flags); + + lldb::ProcessSP GetProcessSP() { return m_process_wp.lock(); } + + private: lldb::ProcessWP m_process_wp; + typedef std::vector<VTableRegion> region_collection; + lldb::addr_t m_trampoline_header; + lldb::break_id_t m_trampolines_changed_bp_id; + region_collection m_regions; lldb::ModuleSP m_objc_module_sp; - const char *m_lookup_implementation_function_code; - std::unique_ptr<UtilityFunction> m_impl_code; - std::mutex m_impl_function_mutex; - lldb::addr_t m_impl_fn_addr; - lldb::addr_t m_impl_stret_fn_addr; - lldb::addr_t m_msg_forward_addr; - lldb::addr_t m_msg_forward_stret_addr; - std::unique_ptr<AppleObjCVTables> m_vtables_ap; + }; + + static const DispatchFunction g_dispatch_functions[]; + + typedef std::map<lldb::addr_t, int> MsgsendMap; // This table maps an dispatch + // fn address to the index in + // g_dispatch_functions + MsgsendMap m_msgSend_map; + lldb::ProcessWP m_process_wp; + lldb::ModuleSP m_objc_module_sp; + const char *m_lookup_implementation_function_code; + std::unique_ptr<UtilityFunction> m_impl_code; + std::mutex m_impl_function_mutex; + lldb::addr_t m_impl_fn_addr; + lldb::addr_t m_impl_stret_fn_addr; + lldb::addr_t m_msg_forward_addr; + lldb::addr_t m_msg_forward_stret_addr; + std::unique_ptr<AppleObjCVTables> m_vtables_ap; }; } // namespace lldb_private |