Xmethod support in Python.

	* python/py-xmethods.c: New file.
	* python/py-objfile.c (objfile_object): New field 'xmethods'.
	(objfpy_dealloc): XDECREF on the new xmethods field.
	(objfpy_new, objfile_to_objfile_object): Initialize xmethods
	field.
	(objfpy_get_xmethods): New function.
	(objfile_getset): New entry 'xmethods'.
	* python/py-progspace.c (pspace_object): New field 'xmethods'.
	(pspy_dealloc): XDECREF on the new xmethods field.
	(pspy_new, pspace_to_pspace_object): Initialize	xmethods
	field.
	(pspy_get_xmethods): New function.
	(pspace_getset): New entry 'xmethods'.
	* python/python-internal.h: Add declarations for new functions.
	* python/python.c (_initialize_python): Invoke
	gdbpy_initialize_xmethods.
	* python/lib/gdb/__init__.py (xmethods): New
	attribute.
	* python/lib/gdb/xmethod.py: New file.
	* python/lib/gdb/command/xmethods.py: New file.

	testuite/
	* gdb.python/py-xmethods.cc: New testcase to test xmethods.
	* gdb.python/py-xmethods.exp: New tests to test xmethods.
	* gdb.python/py-xmethods.py: Python script supporting the
	new testcase and tests.

1 files changed, 22 insertions, 0 deletions

diff --git a/gdb/python/python-internal.h b/gdb/python/python-internal.h
index 07650f7..9c06621 100644
--- a/gdb/python/python-internal.h
+++ b/gdb/python/python-internal.h
@@ -307,6 +307,24 @@ extern enum ext_lang_bp_stop gdbpy_breakpoint_cond_says_stop
   (const struct extension_language_defn *, struct breakpoint *);
 extern int gdbpy_breakpoint_has_cond (const struct extension_language_defn *,
 				      struct breakpoint *b);
+
+extern void *gdbpy_clone_xmethod_worker_data
+  (const struct extension_language_defn *extlang, void *data);
+extern void gdbpy_free_xmethod_worker_data
+  (const struct extension_language_defn *extlang, void *data);
+extern enum ext_lang_rc gdbpy_get_matching_xmethod_workers
+  (const struct extension_language_defn *extlang,
+   struct type *obj_type, const char *method_name,
+   xmethod_worker_vec **dm_vec);
+extern enum ext_lang_rc gdbpy_get_xmethod_arg_types
+  (const struct extension_language_defn *extlang,
+   struct xmethod_worker *worker,
+   int *nargs,
+   struct type ***arg_types);
+extern struct value *gdbpy_invoke_xmethod
+  (const struct extension_language_defn *extlang,
+   struct xmethod_worker *worker,
+   struct value *obj, struct value **args, int nargs);
 
 PyObject *gdbpy_history (PyObject *self, PyObject *args);
 PyObject *gdbpy_breakpoints (PyObject *, PyObject *);
@@ -345,11 +363,13 @@ PyObject *pspace_to_pspace_object (struct program_space *)
     CPYCHECKER_RETURNS_BORROWED_REF;
 PyObject *pspy_get_printers (PyObject *, void *);
 PyObject *pspy_get_frame_filters (PyObject *, void *);
+PyObject *pspy_get_xmethods (PyObject *, void *);
 
 PyObject *objfile_to_objfile_object (struct objfile *)
     CPYCHECKER_RETURNS_BORROWED_REF;
 PyObject *objfpy_get_printers (PyObject *, void *);
 PyObject *objfpy_get_frame_filters (PyObject *, void *);
+PyObject *objfpy_get_xmethods (PyObject *, void *);
 
 PyObject *gdbarch_to_arch_object (struct gdbarch *gdbarch);
 
@@ -430,6 +450,8 @@ int gdbpy_initialize_new_objfile_event (void)
   CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
 int gdbpy_initialize_arch (void)
   CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
+int gdbpy_initialize_xmethods (void)
+  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
 
 struct cleanup *make_cleanup_py_decref (PyObject *py);
 struct cleanup *make_cleanup_py_xdecref (PyObject *py);