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

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

View File

@ -1,3 +1,38 @@
2014-12-02 Nick Bull <nicholaspbull@gmail.com>
* 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.
2014-12-02 Doug Evans <dje@google.com>
* python/py-infthread.c: Whitespace fixes.

View File

@ -361,6 +361,7 @@ SUBDIR_PYTHON_OBS = \
py-function.o \
py-gdb-readline.o \
py-inferior.o \
py-infevents.o \
py-infthread.o \
py-lazy-string.o \
py-linetable.o \
@ -399,6 +400,7 @@ SUBDIR_PYTHON_SRCS = \
python/py-function.c \
python/py-gdb-readline.c \
python/py-inferior.c \
python/py-infevents.c \
python/py-infthread.c \
python/py-lazy-string.c \
python/py-linetable.c \
@ -2478,6 +2480,10 @@ py-inferior.o: $(srcdir)/python/py-inferior.c
$(COMPILE) $(PYTHON_CFLAGS) $(srcdir)/python/py-inferior.c
$(POSTCOMPILE)
py-infevents.o: $(srcdir)/python/py-infevents.c
$(COMPILE) $(PYTHON_CFLAGS) $(srcdir)/python/py-infevents.c
$(POSTCOMPILE)
py-infthread.o: $(srcdir)/python/py-infthread.c
$(COMPILE) $(PYTHON_CFLAGS) $(srcdir)/python/py-infthread.c
$(POSTCOMPILE)

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@ -1,6 +1,16 @@
What has changed in GDB?
(Organized release by release)
* Python Scripting
New events which are triggered when GDB modifies the state of the
inferior.
** gdb.events.inferior_call_pre: Function call is about to be made.
** gdb.events.inferior_call_post: Function call has just been made.
** gdb.events.memory_changed: A memory location has been altered.
** gdb.events.register_changed: A register has been altered.
*** Changes since GDB 7.8
* GDB now supports hardware watchpoints on x86 GNU Hurd.

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@ -1,3 +1,9 @@
2014-12-02 Nick Bull <nicholaspbull@gmail.com>
* python.texi (Events In Python): Document new events
InferiorCallPreEvent, InferiorCallPostEvent, MemoryChangedEvent
and RegisterChangedEvent.
2014-11-30 Jan Kratochvil <jan.kratochvil@redhat.com>
Add add-auto-load-scripts-directory.

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@ -281,6 +281,22 @@ The trace state variable @var{tsv} is deleted. If @var{tsv} is
The trace state value @var{tsv} is modified.
@end deftypefun
@deftypefun void inferior_call_pre (ptid_t @var{thread}, CORE_ADDR @var{address})
An inferior function at @var{address} is about to be called in thread
@var{thread}.
@end deftypefun
@deftypefun void inferior_call_post (ptid_t @var{thread}, CORE_ADDR @var{address})
The inferior function at @var{address} has just been called. This observer
is called even if the inferior exits during the call. @var{thread} is the
thread in which the function was called, which may be different from the
current thread.
@end deftypefun
@deftypefun void register_changed (struct frame_info *@var{frame}, int @var{regnum})
A register in the inferior has been modified by the @value{GDBN} user.
@end deftypefun
@deftypefun void test_notification (int @var{somearg})
This observer is used for internal testing. Do not use.
See testsuite/gdb.gdb/observer.exp.

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@ -2738,6 +2738,55 @@ A reference to the program space (@code{gdb.Progspace}) whose objfile list has
been cleared. @xref{Progspaces In Python}.
@end defvar
@item events.inferior_call_pre
Emits @code{gdb.InferiorCallPreEvent} which indicates that a function in
the inferior is about to be called.
@defvar InferiorCallPreEvent.ptid
The thread in which the call will be run.
@end defvar
@defvar InferiorCallPreEvent.address
The location of the function to be called.
@end defvar
@item events.inferior_call_post
Emits @code{gdb.InferiorCallPostEvent} which indicates that a function in
the inferior has returned.
@defvar InferiorCallPostEvent.ptid
The thread in which the call was run.
@end defvar
@defvar InferiorCallPostEvent.address
The location of the function that was called.
@end defvar
@item events.memory_changed
Emits @code{gdb.MemoryChangedEvent} which indicates that the memory of the
inferior has been modified by the @value{GDBN} user, for instance via a
command like @w{@code{set *addr = value}}. The event has the following
attributes:
@defvar MemoryChangedEvent.address
The start address of the changed region.
@end defvar
@defvar MemoryChangedEvent.length
Length in bytes of the changed region.
@end defvar
@item events.register_changed
Emits @code{gdb.RegisterChangedEvent} which indicates that a register in the
inferior has been modified by the @value{GDBN} user.
@defvar RegisterChangedEvent.frame
A gdb.Frame object representing the frame in which the register was modified.
@end defvar
@defvar RegisterChangedEvent.regnum
Denotes which register was modified.
@end defvar
@end table
@node Threads In Python

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@ -35,6 +35,7 @@
#include "ada-lang.h"
#include "gdbthread.h"
#include "event-top.h"
#include "observer.h"
/* If we can't find a function's name from its address,
we print this instead. */
@ -654,6 +655,8 @@ call_function_by_hand (struct value *function, int nargs, struct value **args)
target_values_type = values_type;
}
observer_notify_inferior_call_pre (inferior_ptid, funaddr);
/* Determine the location of the breakpoint (and possibly other
stuff) that the called function will return to. The SPARC, for a
function returning a structure or union, needs to make space for
@ -899,6 +902,8 @@ call_function_by_hand (struct value *function, int nargs, struct value **args)
e = run_inferior_call (tp, real_pc);
}
observer_notify_inferior_call_post (call_thread_ptid, funaddr);
/* Rethrow an error if we got one trying to run the inferior. */
if (e.reason < 0)

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@ -105,6 +105,22 @@ typedef struct
extern int emit_continue_event (ptid_t ptid);
extern int emit_exited_event (const LONGEST *exit_code, struct inferior *inf);
/* For inferior function call events, discriminate whether event is
before or after the call. */
typedef enum
{
/* Before the call */
INFERIOR_CALL_PRE,
/* after the call */
INFERIOR_CALL_POST,
} inferior_call_kind;
extern int emit_inferior_call_event (inferior_call_kind kind,
ptid_t thread, CORE_ADDR addr);
extern int emit_register_changed_event (struct frame_info *frame,
int regnum);
extern int emit_memory_changed_event (CORE_ADDR addr, ssize_t len);
extern int evpy_emit_event (PyObject *event,
eventregistry_object *registry)
CPYCHECKER_STEALS_REFERENCE_TO_ARG (1);

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@ -47,6 +47,9 @@ typedef struct
eventregistry_object *exited;
eventregistry_object *new_objfile;
eventregistry_object *clear_objfiles;
eventregistry_object *inferior_call;
eventregistry_object *memory_changed;
eventregistry_object *register_changed;
PyObject *module;

View File

@ -73,6 +73,18 @@ gdbpy_initialize_py_events (void)
if (add_new_registry (&gdb_py_events.exited, "exited") < 0)
return -1;
if (add_new_registry (&gdb_py_events.inferior_call,
"inferior_call") < 0)
return -1;
if (add_new_registry (&gdb_py_events.memory_changed,
"memory_changed") < 0)
return -1;
if (add_new_registry (&gdb_py_events.register_changed,
"register_changed") < 0)
return -1;
if (add_new_registry (&gdb_py_events.new_objfile, "new_objfile") < 0)
return -1;

View File

@ -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);

263
gdb/python/py-infevents.c Normal file
View File

@ -0,0 +1,263 @@
/* Python interface to inferior function events.
Copyright (C) 2013, 2014 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "py-event.h"
static PyTypeObject inferior_call_pre_event_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
static PyTypeObject inferior_call_post_event_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
static PyTypeObject register_changed_event_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
static PyTypeObject memory_changed_event_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
/* Construct either a gdb.InferiorCallPreEvent or a
gdb.InferiorCallPostEvent. */
static PyObject *
create_inferior_call_event_object (inferior_call_kind flag, ptid_t ptid,
CORE_ADDR addr)
{
int pid;
long tid, lwp;
PyObject *event;
PyObject *ptid_obj = NULL;
PyObject *addr_obj = NULL;
int failed;
struct cleanup *cleanups;
struct cleanup *member_cleanups;
switch (flag)
{
case INFERIOR_CALL_PRE:
event = create_event_object (&inferior_call_pre_event_object_type);
break;
case INFERIOR_CALL_POST:
event = create_event_object (&inferior_call_post_event_object_type);
break;
default:
return NULL;
}
cleanups = make_cleanup_py_decref (event);
ptid_obj = gdbpy_create_ptid_object (ptid);
if (ptid_obj == NULL)
goto fail;
member_cleanups = make_cleanup_py_decref (ptid_obj);
failed = evpy_add_attribute (event, "ptid", ptid_obj) < 0;
if (failed)
goto fail;
addr_obj = PyLong_FromLongLong (addr);
if (addr_obj == NULL)
goto fail;
make_cleanup_py_decref (addr_obj);
failed = evpy_add_attribute (event, "address", addr_obj) < 0;
if (failed)
goto fail;
do_cleanups (member_cleanups);
discard_cleanups (cleanups);
return event;
fail:
do_cleanups (cleanups);
return NULL;
}
/* Construct a gdb.RegisterChangedEvent containing the affected
register number. */
static PyObject *
create_register_changed_event_object (struct frame_info *frame,
int regnum)
{
PyObject *event;
PyObject *frame_obj = NULL;
PyObject *regnum_obj = NULL;
int failed;
struct cleanup *cleanups;
struct cleanup *member_cleanups;
event = create_event_object (&register_changed_event_object_type);
if (event == NULL)
return NULL;
cleanups = make_cleanup_py_decref (event);
frame_obj = frame_info_to_frame_object (frame);
if (frame_obj == NULL)
goto fail;
member_cleanups = make_cleanup_py_decref (frame_obj);
failed = evpy_add_attribute (event, "frame", frame_obj) < 0;
if (failed)
goto fail;
regnum_obj = PyLong_FromLongLong (regnum);
if (regnum_obj == NULL)
goto fail;
make_cleanup_py_decref (regnum_obj);
failed = evpy_add_attribute (event, "regnum", regnum_obj) < 0;
if (failed)
goto fail;
do_cleanups (member_cleanups);
discard_cleanups (cleanups);
return event;
fail:
do_cleanups (cleanups);
return NULL;
}
/* Construct a gdb.MemoryChangedEvent describing the extent of the
affected memory. */
static PyObject *
create_memory_changed_event_object (CORE_ADDR addr, ssize_t len)
{
PyObject *event;
PyObject *addr_obj = NULL;
PyObject *len_obj = NULL;
int failed;
struct cleanup *cleanups;
struct cleanup *member_cleanups;
event = create_event_object (&memory_changed_event_object_type);
if (event == NULL)
return NULL;
cleanups = make_cleanup_py_decref (event);
addr_obj = PyLong_FromLongLong (addr);
if (addr_obj == NULL)
goto fail;
member_cleanups = make_cleanup_py_decref (addr_obj);
failed = evpy_add_attribute (event, "address", addr_obj) < 0;
if (failed)
goto fail;
len_obj = PyLong_FromLong (len);
if (len_obj == NULL)
goto fail;
make_cleanup_py_decref (len_obj);
failed = evpy_add_attribute (event, "length", len_obj) < 0;
if (failed)
goto fail;
do_cleanups (member_cleanups);
discard_cleanups (cleanups);
return event;
fail:
do_cleanups (cleanups);
return NULL;
}
/* Callback function which notifies observers when an event occurs which
calls a function in the inferior.
This function will create a new Python inferior-call event object.
Return -1 if emit fails. */
int
emit_inferior_call_event (inferior_call_kind flag, ptid_t thread,
CORE_ADDR addr)
{
PyObject *event;
if (evregpy_no_listeners_p (gdb_py_events.inferior_call))
return 0;
event = create_inferior_call_event_object (flag, thread, addr);
if (event != NULL)
return evpy_emit_event (event, gdb_py_events.inferior_call);
return -1;
}
/* Callback when memory is modified by the user. This function will
create a new Python memory changed event object. */
int
emit_memory_changed_event (CORE_ADDR addr, ssize_t len)
{
PyObject *event;
if (evregpy_no_listeners_p (gdb_py_events.memory_changed))
return 0;
event = create_memory_changed_event_object (addr, len);
if (event != NULL)
return evpy_emit_event (event, gdb_py_events.memory_changed);
return -1;
}
/* Callback when a register is modified by the user. This function
will create a new Python register changed event object. */
int
emit_register_changed_event (struct frame_info* frame, int regnum)
{
PyObject *event;
if (evregpy_no_listeners_p (gdb_py_events.register_changed))
return 0;
event = create_register_changed_event_object (frame, regnum);
if (event != NULL)
return evpy_emit_event (event, gdb_py_events.register_changed);
return -1;
}
GDBPY_NEW_EVENT_TYPE (inferior_call_pre,
"gdb.InferiorCallPreEvent",
"InferiorCallPreEvent",
"GDB inferior function pre-call event object",
event_object_type,
static);
GDBPY_NEW_EVENT_TYPE (inferior_call_post,
"gdb.InferiorCallPostEvent",
"InferiorCallPostEvent",
"GDB inferior function post-call event object",
event_object_type,
static);
GDBPY_NEW_EVENT_TYPE (register_changed,
"gdb.RegisterChangedEvent",
"RegisterChangedEvent",
"GDB register change event object",
event_object_type,
static);
GDBPY_NEW_EVENT_TYPE (memory_changed,
"gdb.MemoryChangedEvent",
"MemoryChangedEvent",
"GDB memory change event object",
event_object_type,
static);

View File

@ -134,23 +134,10 @@ thpy_get_ptid (PyObject *self, void *closure)
int pid;
long tid, lwp;
thread_object *thread_obj = (thread_object *) self;
PyObject *ret;
THPY_REQUIRE_VALID (thread_obj);
ret = PyTuple_New (3);
if (!ret)
return NULL;
pid = ptid_get_pid (thread_obj->thread->ptid);
lwp = ptid_get_lwp (thread_obj->thread->ptid);
tid = ptid_get_tid (thread_obj->thread->ptid);
PyTuple_SET_ITEM (ret, 0, PyInt_FromLong (pid));
PyTuple_SET_ITEM (ret, 1, PyInt_FromLong (lwp));
PyTuple_SET_ITEM (ret, 2, PyInt_FromLong (tid));
return ret;
return gdbpy_create_ptid_object (thread_obj->thread->ptid);
}
/* Implementation of InferiorThread.switch ().
@ -236,6 +223,30 @@ thpy_is_valid (PyObject *self, PyObject *args)
Py_RETURN_TRUE;
}
/* Return a reference to a new Python object representing a ptid_t.
The object is a tuple containing (pid, lwp, tid). */
PyObject *
gdbpy_create_ptid_object (ptid_t ptid)
{
int pid;
long tid, lwp;
PyObject *ret;
ret = PyTuple_New (3);
if (!ret)
return NULL;
pid = ptid_get_pid (ptid);
lwp = ptid_get_lwp (ptid);
tid = ptid_get_tid (ptid);
PyTuple_SET_ITEM (ret, 0, PyInt_FromLong (pid));
PyTuple_SET_ITEM (ret, 1, PyInt_FromLong (lwp));
PyTuple_SET_ITEM (ret, 2, PyInt_FromLong (tid));
return ret;
}
/* Implementation of gdb.selected_thread () -> gdb.InferiorThread.
Returns the selected thread object. */

View File

@ -363,6 +363,7 @@ PyObject *gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
const char *encoding,
struct type *type);
PyObject *gdbpy_inferiors (PyObject *unused, PyObject *unused2);
PyObject *gdbpy_create_ptid_object (ptid_t ptid);
PyObject *gdbpy_selected_thread (PyObject *self, PyObject *args);
PyObject *gdbpy_selected_inferior (PyObject *self, PyObject *args);
PyObject *gdbpy_string_to_argv (PyObject *self, PyObject *args);
@ -464,6 +465,14 @@ int gdbpy_initialize_breakpoint_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_continue_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_inferior_call_pre_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_inferior_call_post_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_register_changed_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_memory_changed_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_exited_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_thread_event (void)

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@ -1753,6 +1753,10 @@ message == an error message without a stack will be printed."),
|| gdbpy_initialize_signal_event () < 0
|| gdbpy_initialize_breakpoint_event () < 0
|| gdbpy_initialize_continue_event () < 0
|| gdbpy_initialize_inferior_call_pre_event () < 0
|| gdbpy_initialize_inferior_call_post_event () < 0
|| gdbpy_initialize_register_changed_event () < 0
|| gdbpy_initialize_memory_changed_event () < 0
|| gdbpy_initialize_exited_event () < 0
|| gdbpy_initialize_thread_event () < 0
|| gdbpy_initialize_new_objfile_event () < 0

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@ -1,3 +1,11 @@
2014-12-02 Nick Bull <nicholaspbull@gmail.com>
* 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.
2014-12-02 Andreas Arnez <arnez@linux.vnet.ibm.com>
* gdb.base/execl-update-breakpoints.exp: Specify the link address

View File

@ -79,6 +79,123 @@ all threads stopped"
delete_breakpoints
# Test inferior call events
gdb_test_multiple "info threads" "get current thread" {
-re "\[^\n\r\]*process (\[0-9\]+)\[^\n\r\]*do_nothing.*$gdb_prompt $" {
set process_id $expect_out(1,string)
pass "get current thread"
}
}
gdb_test_multiple "print do_nothing" "get address of do_nothing" {
-re "\[^\n\r\]*(0x\[0-9a-f\]+) \<do_nothing\>.*$gdb_prompt $" {
set addr $expect_out(1,string)
pass "get address of do_nothing"
}
}
set expected [list "event type: pre-call"]
lappend expected "ptid: \\($process_id, $process_id, 0\\)" "address: $addr"
lappend expected "event type: post-call"
lappend expected "ptid: \\($process_id, $process_id, 0\\)" "address: $addr"
gdb_test_sequence "call do_nothing()" "" $expected
# Test register changed event
gdb_test_no_output {set $old_sp = $sp}
gdb_test_sequence {set $sp = 0} "" {
"event type: register-changed"
"frame: "
"num: "
}
gdb_test_sequence {set $sp = 1} "" {
"event type: register-changed"
"frame: "
"num: "
}
gdb_test_sequence {set $sp = $old_sp} "" {
"event type: register-changed"
"frame: "
"num: "
}
# Test that no register_changed event is generated on "non-user"
# modifications
set test "up"
gdb_test_multiple {up} $test {
-re "event type: register-changed.*\r\n$gdb_prompt $" {
fail $test
}
-re "#1.*in first.*\r\n.*do_nothing.*\r\n$gdb_prompt $" {
pass $test
}
}
set test "down"
gdb_test_multiple {down} $test {
-re "event type: register-changed.*\r\n$gdb_prompt $" {
fail $test
}
-re "#0.*do_nothing.* at .*\r\n.*void do_nothing.*\r\n$gdb_prompt $" {
pass $test
}
}
set test "step"
# Note: This will step the inferior out of do_nothing and back into first.
gdb_test_multiple {step} $test {
-re "event type: register-changed.*\r\n$gdb_prompt $" {
fail $test
}
-re "first.* at .*\r\n$gdb_prompt $" {
pass $test
}
}
# Test memory changed event
gdb_test_no_output {set $saved = *(int*) $sp}
gdb_test_sequence {set *(int*) $sp = 0} "" {
"event type: memory-changed"
"address: "
"length: "
}
gdb_test_sequence {set *(int*) $sp = $saved} "" {
"event type: memory-changed"
"address: "
"length: "
}
# Test that no memory_changed event is generated on breakpoint
# activity
set test "break second"
gdb_test_multiple "break second" $test {
-re "event type: memory-changed" {
fail $test
}
-re "Breakpoint (\[0-9\]+) at .*\r\n$gdb_prompt $" {
set second_breakpoint $expect_out(1,string)
pass $test
}
}
set test "continue to breakpoint $second_breakpoint"
set expected ".*event type: continue.*\r\n"
append expected ".*event type: stop.*\r\n"
append expected ".*stop reason: breakpoint.*\r\n"
append expected ".*all threads stopped.*\r\n$gdb_prompt $"
gdb_test_multiple "continue" $test {
-re "event type: memory-changed.*\r\n$gdb_prompt $" {
fail $test
}
-re $expected {
pass $test
}
}
gdb_test_no_output "delete $second_breakpoint"
#test exited event.
gdb_test "continue" ".*event type: continue.*
.*clear_objfiles\[\r\n\]*progspace: .*py-events.*

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@ -62,6 +62,30 @@ def clear_objfiles_handler (event):
print ("event type: clear_objfiles")
print ("progspace: %s" % (event.progspace.filename))
def inferior_call_handler (event):
if (isinstance (event, gdb.InferiorCallPreEvent)):
print ("event type: pre-call")
elif (isinstance (event, gdb.InferiorCallPostEvent)):
print ("event type: post-call")
else:
assert False
print ("ptid: %s" % (event.ptid,))
print ("address: 0x%x" % (event.address))
def register_changed_handler (event):
assert (isinstance (event, gdb.RegisterChangedEvent))
print ("event type: register-changed")
assert (isinstance (event.frame, gdb.Frame))
print ("frame: %s" % (event.frame))
print ("num: %s" % (event.regnum))
def memory_changed_handler (event):
assert (isinstance (event, gdb.MemoryChangedEvent))
print ("event type: memory-changed")
print ("address: %s" % (event.address))
print ("length: %s" % (event.length))
class test_events (gdb.Command):
"""Test events."""
@ -73,6 +97,9 @@ class test_events (gdb.Command):
gdb.events.stop.connect (breakpoint_stop_handler)
gdb.events.exited.connect (exit_handler)
gdb.events.cont.connect (continue_handler)
gdb.events.inferior_call.connect (inferior_call_handler)
gdb.events.memory_changed.connect (memory_changed_handler)
gdb.events.register_changed.connect (register_changed_handler)
print ("Event testers registered.")
test_events ()

View File

@ -1169,6 +1169,7 @@ value_assign (struct value *toval, struct value *fromval)
}
}
observer_notify_register_changed (frame, value_reg);
if (deprecated_register_changed_hook)
deprecated_register_changed_hook (-1);
break;