diff options
Diffstat (limited to 'lldb/source/Plugins/Process/Linux/NativeProcessLinux.h')
| -rw-r--r-- | lldb/source/Plugins/Process/Linux/NativeProcessLinux.h | 89 |
1 files changed, 38 insertions, 51 deletions
diff --git a/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h b/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h index 57c598ff770..8e9c28da338 100644 --- a/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h +++ b/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h @@ -60,6 +60,37 @@ namespace process_linux { NativeProcessProtocol::NativeDelegate &native_delegate, NativeProcessProtocolSP &native_process_sp); + //------------------------------------------------------------------------------ + /// @class Operation + /// @brief Represents a NativeProcessLinux operation. + /// + /// Under Linux, it is not possible to ptrace() from any other thread but the + /// one that spawned or attached to the process from the start. Therefore, when + /// a NativeProcessLinux is asked to deliver or change the state of an inferior + /// process the operation must be "funneled" to a specific thread to perform the + /// task. The Operation class provides an abstract base for all services the + /// NativeProcessLinux must perform via the single virtual function Execute, thus + /// encapsulating the code that needs to run in the privileged context. + class Operation + { + public: + Operation () : m_error() { } + + virtual + ~Operation() {} + + virtual void + Execute (NativeProcessLinux *process) = 0; + + const Error & + GetError () const { return m_error; } + + protected: + Error m_error; + }; + + typedef std::unique_ptr<Operation> OperationUP; + // --------------------------------------------------------------------- // NativeProcessProtocol Interface // --------------------------------------------------------------------- @@ -123,64 +154,20 @@ namespace process_linux { void Terminate () override; + Error + GetLoadedModuleFileSpec(const char* module_path, FileSpec& file_spec) override; + // --------------------------------------------------------------------- // Interface used by NativeRegisterContext-derived classes. // --------------------------------------------------------------------- - - /// Reads the contents from the register identified by the given (architecture - /// dependent) offset. - /// - /// This method is provided for use by RegisterContextLinux derivatives. - Error - ReadRegisterValue(lldb::tid_t tid, unsigned offset, const char *reg_name, - unsigned size, RegisterValue &value); - - /// Writes the given value to the register identified by the given - /// (architecture dependent) offset. - /// - /// This method is provided for use by RegisterContextLinux derivatives. Error - WriteRegisterValue(lldb::tid_t tid, unsigned offset, const char *reg_name, - const RegisterValue &value); + DoOperation(Operation* op); - /// Reads all general purpose registers into the specified buffer. Error - ReadGPR(lldb::tid_t tid, void *buf, size_t buf_size); + DoOperation(OperationUP op) { return DoOperation(op.get()); } - /// Reads generic floating point registers into the specified buffer. - Error - ReadFPR(lldb::tid_t tid, void *buf, size_t buf_size); - - /// Reads hardware breakpoints and watchpoints capability information. - Error - ReadHardwareDebugInfo (lldb::tid_t tid, unsigned int &watch_count , - unsigned int &break_count); - - /// Write hardware breakpoint/watchpoint control and address registers. - Error - WriteHardwareDebugRegs (lldb::tid_t tid, lldb::addr_t *addr_buf, - uint32_t *cntrl_buf, int type, int count); - - /// Reads the specified register set into the specified buffer. - /// For instance, the extended floating-point register set. - Error - ReadRegisterSet(lldb::tid_t tid, void *buf, size_t buf_size, unsigned int regset); - - /// Writes all general purpose registers into the specified buffer. - Error - WriteGPR(lldb::tid_t tid, void *buf, size_t buf_size); - - /// Writes generic floating point registers into the specified buffer. - Error - WriteFPR(lldb::tid_t tid, void *buf, size_t buf_size); - - /// Writes the specified register set into the specified buffer. - /// For instance, the extended floating-point register set. - Error - WriteRegisterSet(lldb::tid_t tid, void *buf, size_t buf_size, unsigned int regset); - - Error - GetLoadedModuleFileSpec(const char* module_path, FileSpec& file_spec) override; + static long + PtraceWrapper(int req, lldb::pid_t pid, void *addr, void *data, size_t data_size, Error& error); protected: // --------------------------------------------------------------------- |
