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New python events: inferior call, register/memory changed.

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gdb/ChangeLog:

	* NEWS: Mention new Python events.
	* Makefile.in (SUBDIR_PYTHON_OBS): Add py-infevents.o.
	(SUBDIR_PYTHON_SRCS): Add py-infevents.c.
	(py-infevents.o): New rule.
	* doc/observer.texi (inferior_call_pre, inferior_call_post)
	(memory_changed, register_changed): New observers.
	* infcall.c (call_function_by_hand): Notify observer before and
	after inferior call.
	* python/py-event.h (inferior_call_kind): New enum.
	(emit_inferior_call_event): New prototype.
	(emit_register_changed_event): New prototype.
	(emit_memory_changed_event): New prototype.
	* python/py-events.h (events_object): New registries
	inferior_call, memory_changed and register_changed.
	* python/py-evts.c (gdbpy_initialize_py_events): Add the
	inferior_call, memory_changed and register_changed registries.
	* python/py-infevents.c: New.
	* python/py-inferior.c (python_on_inferior_call_pre)
	(python_on_inferior_call_post, python_on_register_change)
	(python_on_memory_change): New functions.
	(gdbpy_initialize_inferior): Attach python handler to new
	observers.
	* python/py-infthread.c(gdbpy_create_ptid_object): New.
	(thpy_get_ptid) Use gdbpy_create_ptid_object.
	* python/python-internal.h:
	(gdbpy_create_ptid_object)
	(gdbpy_initialize_inferior_call_pre_event)
	(gdbpy_initialize_inferior_call_post_event)
	(gdbpy_initialize_register_changed_event)
	(gdbpy_initialize_memory_changed_event): New prototypes.
	* python/python.c (_initialize_python): Initialize new events.
	* valops.c (value_assign): Notify register_changed observer.

gdb/doc/ChangeLog:

	* python.texi (Events In Python): Document new events
	InferiorCallPreEvent, InferiorCallPostEvent, MemoryChangedEvent
	and RegisterChangedEvent.

gdb/testsuite/ChangeLog:

	* gdb.python/py-events.py (inferior_call_handler): New.
	(register_changed_handler, memory_changed_handler): New.
	(test_events.invoke): Register new handlers.
	* gdb.python/py-events.exp: Add tests for inferior call,
	memory_changed and register_changed events.
This commit is contained in:
Nick Bull 2014-12-02 11:15:29 -08:00 • committed by Doug Evans
parent 71dd4b30a7
commit 162078c893
19 changed files with 682 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

70
gdb/python/py-inferior.c
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@ -116,6 +116,72 @@ python_on_resume (ptid_t ptid)
do_cleanups (cleanup);
}
/* Callback, registered as an observer, that notifies Python listeners
when an inferior function call is about to be made. */
static void
python_on_inferior_call_pre (ptid_t thread, CORE_ADDR address)
{
struct cleanup *cleanup;
cleanup = ensure_python_env (target_gdbarch (), current_language);
if (emit_inferior_call_event (INFERIOR_CALL_PRE, thread, address) < 0)
gdbpy_print_stack ();
do_cleanups (cleanup);
}
/* Callback, registered as an observer, that notifies Python listeners
when an inferior function call has completed. */
static void
python_on_inferior_call_post (ptid_t thread, CORE_ADDR address)
{
struct cleanup *cleanup;
cleanup = ensure_python_env (target_gdbarch (), current_language);
if (emit_inferior_call_event (INFERIOR_CALL_POST, thread, address) < 0)
gdbpy_print_stack ();
do_cleanups (cleanup);
}
/* Callback, registered as an observer, that notifies Python listeners
when a part of memory has been modified by user action (eg via a
'set' command). */
static void
python_on_memory_change (struct inferior *inferior, CORE_ADDR addr, ssize_t len, const bfd_byte *data)
{
struct cleanup *cleanup;
cleanup = ensure_python_env (target_gdbarch (), current_language);
if (emit_memory_changed_event (addr, len) < 0)
gdbpy_print_stack ();
do_cleanups (cleanup);
}
/* Callback, registered as an observer, that notifies Python listeners
when a register has been modified by user action (eg via a 'set'
command). */
static void
python_on_register_change (struct frame_info *frame, int regnum)
{
struct cleanup *cleanup;
cleanup = ensure_python_env (target_gdbarch (), current_language);
if (emit_register_changed_event (frame, regnum) < 0)
gdbpy_print_stack ();
do_cleanups (cleanup);
}
static void
python_inferior_exit (struct inferior *inf)
{
@ -802,6 +868,10 @@ gdbpy_initialize_inferior (void)
observer_attach_thread_exit (delete_thread_object);
observer_attach_normal_stop (python_on_normal_stop);
observer_attach_target_resumed (python_on_resume);
observer_attach_inferior_call_pre (python_on_inferior_call_pre);
observer_attach_inferior_call_post (python_on_inferior_call_post);
observer_attach_memory_changed (python_on_memory_change);
observer_attach_register_changed (python_on_register_change);
observer_attach_inferior_exit (python_inferior_exit);
observer_attach_new_objfile (python_new_objfile);