2008-10-17 Michael Snyder <msnyder@vmware.com>
authorMichael Snyder <msnyder@vmware.com>
Fri, 17 Oct 2008 19:43:47 +0000 (19:43 +0000)
committerMichael Snyder <msnyder@vmware.com>
Fri, 17 Oct 2008 19:43:47 +0000 (19:43 +0000)
commitb2175913c5f01e75fdb9b19699049737abb2f37c
tree7e157c65ec30335451ef139353a79a5565eeb56e
parent153ccabd86d78a26fb9021051fc39b63b649105b
2008-10-17  Michael Snyder  <msnyder@vmware.com>
Target interface for reverse debugging.
* target.h (enum target_waitkind):
Add new wait event, TARGET_WAITKIND_NO_HISTORY.
(struct target_ops): New method to_can_execute_reverse.
(target_can_execute_reverse): New macro.
* target.c (update_current_target): Inherit to_can_execute_reverse.

Remote interface for reverse debugging.
* remote.c (remote_can_execute_reverse): New target method.
(remote_resume): Check for reverse exec direction, and send
appropriate command to target.
(remote_wait_as): Check target response for NO_HISTORY status.
Also check for empty reply (target doesn't understand "bs" or "bc).
(remote_vcont_resume): Jump out if attempting reverse execution.

Event handling interface for reverse debugging.
* infrun.c (execution_direction): New state variable.
(enum inferior_stop_reason): Add NO_HISTORY reason.
(handle_inferior_event): Handle TARGET_WAITKIND_NO_HISTORY.
Handle stepping over a function call in reverse.
Handle stepping thru a line range in reverse.
Handle setting a step-resume breakpoint in reverse.
Handle stepping into a function in reverse.
Handle stepping between line ranges in reverse.
(print_stop_reason): Print reason for NO_HISTORY.
(step_into_function): Rename to handle_step_into_function.
(handle_step_into_function_backward): New function.
(set_exec_direction_func, show_exec_direction_func): New funcs.
(proceed): No need to singlestep over a breakpoint
when resuming in reverse.

* inferior.h (enum exec_direction_kind): New enum.
(execution_direction): Export new execution state variable.

* breakpoint.c (make_breakpoint_silent): New function.
* breakpoint.h (make_breakpoint_silent): Export.
* infcmd.c (finish_command): Check for reverse exec direction.
(finish_backward): New function, handle finish cmd in reverse.

User interface for reverse execution.
* Makefile.in (reverse.c): New file.
* reverse.c: New file.  User interface for reverse execution.
gdb/ChangeLog
gdb/Makefile.in
gdb/breakpoint.c
gdb/breakpoint.h
gdb/infcmd.c
gdb/inferior.h
gdb/infrun.c
gdb/remote.c
gdb/reverse.c [new file with mode: 0644]
gdb/target.c
gdb/target.h