+2010-03-24 Pedro Alves <pedro@codesourcery.com>
+
+ Teach linux gdbserver to step-over-breakpoints.
+
+ * linux-low.c (can_hardware_single_step): New.
+ (supports_breakpoints): New.
+ (handle_extended_wait): If stopping threads, read the stop pc of
+ the new cloned LWP.
+ (get_pc): New.
+ (get_stop_pc): Add `lwp' parameter. Handle it. Bail out if the
+ low target doesn't support retrieving the PC.
+ (add_lwp): Set last_resume_kind to resume_continue.
+ (linux_attach_lwp_1): Adjust comments. Always set stop_expected.
+ (linux_attach): Don't clear stop_expected. Set the lwp's
+ last_resume_kind to resume_stop.
+ (linux_detach_one_lwp): Don't check for removed breakpoints.
+ (check_removed_breakpoint): Delete.
+ (status_pending_p): Rename to ...
+ (status_pending_p_callback): ... this. Don't check for removed
+ breakpoints. Don't consider threads that are stopped from GDB's
+ perspective.
+ (linux_wait_for_lwp): Always read the stop_pc here.
+ (cancel_breakpoint): New.
+ (step_over_bkpt): New global.
+ (linux_wait_for_event_1): Implement stepping over breakpoints.
+ (gdb_wants_lwp_stopped): New.
+ (gdb_wants_all_stopped): New.
+ (linux_wait_1): Tag threads as gdb-wants-stopped. Cancel finished
+ single-step traps here. Store the thread's last reported target
+ wait status.
+ (send_sigstop): Don't clear stop_expected. Always set it,
+ instead.
+ (mark_lwp_dead): Remove reference to pending_is_breakpoint.
+ (cancel_finished_single_step): New.
+ (cancel_finished_single_steps): New.
+ (wait_for_sigstop): Don't cancel finished single-step traps here.
+ (linux_resume_one_lwp): Don't check for removed breakpoints.
+ Don't set `step' on non-hardware step archs.
+ (linux_set_resume_request): Ignore resume_stop requests if already
+ stopping or stopped. Set the lwp's last_resume_kind.
+ (resume_status_pending_p): Don't check for removed breakpoints.
+ (need_step_over_p): New.
+ (start_step_over): New.
+ (finish_step_over): New.
+ (linux_resume_one_thread): Always queue a sigstop for resume_stop
+ requests. Clear the thread's last reported target waitstatus.
+ Don't use the `suspended' flag. Don't consider pending breakpoints.
+ (linux_resume): Start a step-over if necessary.
+ (proceed_one_lwp): New.
+ (proceed_all_lwps): New.
+ (unstop_all_lwps): New.
+ * linux-low.h (struct lwp_info): Rewrite comment for the
+ `suspended' flag. Add the `stop_pc' field. Delete the
+ `pending_stop_pc' field. Tweak the `stepping' flag's comment.
+ Add `'last_resume_kind' and `need_step_over' fields.
+ * inferiors.c (struct thread_info): Delete, moved elsewhere.
+ * mem-break.c (struct breakpoint): Delete `reinserting' flag.
+ Delete `breakpoint_to_reinsert' field. New flag `inserted'.
+ (set_raw_breakpoint_at): New.
+ (set_breakpoint_at): Rewrite to use it.
+ (reinsert_breakpoint_handler): Delete.
+ (set_reinsert_breakpoint): New.
+ (reinsert_breakpoint_by_bp): Delete.
+ (delete_reinsert_breakpoints): New.
+ (uninsert_breakpoint): Rewrite.
+ (uninsert_breakpoints_at): New.
+ (reinsert_breakpoint): Rewrite.
+ (reinsert_breakpoints_at): New.
+ (check_breakpoints): Rewrite.
+ (breakpoint_here): New.
+ (breakpoint_inserted_here): New.
+ (check_mem_read): Adjust.
+ * mem-break.h (breakpoints_supported, breakpoint_here)
+ (breakpoint_inserted_here, set_reinsert_breakpoint): Declare.
+ (reinsert_breakpoint_by_bp): Delete declaration.
+ (delete_reinsert_breakpoints): Declare.
+ (reinsert_breakpoint): Delete declaration.
+ (reinsert_breakpoints_at): Declare.
+ (uninsert_breakpoint): Delete declaration.
+ (uninsert_breakpoints_at): Declare.
+ (check_breakpoints): Adjust prototype.
+ * server.h: Adjust include order.
+ (struct thread_info): Declare here. Add a `last_status' field.
+
2010-03-23 Michael Snyder <msnyder@vmware.com>
* server.c (crc32): New function.
projects / deliverable / binutils-gdb.git / blobdiff