+ enum target_xfer_status xfer_partial (enum target_object object,
+ const char *annex,
+ gdb_byte *readbuf,
+ const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len) override;
+
+ bool supports_multi_process () override;
+
+ ptid_t get_ada_task_ptid (long lwp, ULONGEST thread) override;
+
+private:
+ ptid_t wait_1 (ptid_t, struct target_waitstatus *);
+ void check_new_threads (inferior *inf);
+ int decode_exception_message (mach_msg_header_t *hdr,
+ inferior **pinf,
+ darwin_thread_t **pthread);
+ ptid_t decode_message (mach_msg_header_t *hdr,
+ darwin_thread_t **pthread,
+ inferior **pinf,
+ target_waitstatus *status);
+ void stop_inferior (inferior *inf);
+ void init_thread_list (inferior *inf);
+ void ptrace_him (int pid);
+ int cancel_breakpoint (ptid_t ptid);
+};
+
+/* Describe the mach exception handling state for a task. This state is saved
+ before being changed and restored when a process is detached.
+ For more information on these fields see task_get_exception_ports manual
+ page. */
+struct darwin_exception_info
+{
+ /* Exceptions handled by the port. */
+ exception_mask_t masks[EXC_TYPES_COUNT] {};
+
+ /* Ports receiving exception messages. */
+ mach_port_t ports[EXC_TYPES_COUNT] {};
+
+ /* Type of messages sent. */
+ exception_behavior_t behaviors[EXC_TYPES_COUNT] {};
+
+ /* Type of state to be sent. */
+ thread_state_flavor_t flavors[EXC_TYPES_COUNT] {};
+
+ /* Number of elements set. */
+ mach_msg_type_number_t count = 0;
+};
+
+static inline darwin_thread_info *
+get_darwin_thread_info (class thread_info *thread)
+{
+ return static_cast<darwin_thread_info *> (thread->priv.get ());
+}