1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/* Convenience functions implemented in Python.
Copyright (C) 2008-2018 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 "value.h"
#include "python-internal.h"
#include "charset.h"
#include "gdbcmd.h"
#include "cli/cli-decode.h"
#include "completer.h"
#include "expression.h"
#include "language.h"
#include "py-ref.h"
extern PyTypeObject fnpy_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("PyObject");
/* Return a reference to a tuple ARGC elements long. Each element of the
tuple is a PyObject converted from the corresponding element of ARGV. */
static gdbpy_ref<>
convert_values_to_python (int argc, struct value **argv)
{
int i;
gdbpy_ref<> result (PyTuple_New (argc));
if (result == NULL)
return NULL;
for (i = 0; i < argc; ++i)
{
gdbpy_ref<> elt (value_to_value_object (argv[i]));
if (elt == NULL)
return NULL;
PyTuple_SetItem (result.get (), i, elt.release ());
}
return result;
}
/* Call a Python function object's invoke method. */
static struct value *
fnpy_call (struct gdbarch *gdbarch, const struct language_defn *language,
void *cookie, int argc, struct value **argv)
{
/* The gdbpy_enter object needs to be placed first, so that it's the last to
be destroyed. */
gdbpy_enter enter_py (gdbarch, language);
struct value *value;
gdbpy_ref<> result;
gdbpy_ref<> args = convert_values_to_python (argc, argv);
/* convert_values_to_python can return NULL on error. If we
encounter this, do not call the function, but allow the Python ->
error code conversion below to deal with the Python exception.
Note, that this is different if the function simply does not
have arguments. */
if (args != NULL)
{
gdbpy_ref<> callable (PyObject_GetAttrString ((PyObject *) cookie,
"invoke"));
if (callable == NULL)
error (_("No method named 'invoke' in object."));
result.reset (PyObject_Call (callable.get (), args.get (), NULL));
}
if (result == NULL)
gdbpy_handle_exception ();
value = convert_value_from_python (result.get ());
if (value == NULL)
{
gdbpy_print_stack ();
error (_("Error while executing Python code."));
}
return value;
}
/* Initializer for a Function object. It takes one argument, the name
of the function. */
static int
fnpy_init (PyObject *self, PyObject *args, PyObject *kwds)
{
const char *name;
gdb::unique_xmalloc_ptr<char> docstring;
if (! PyArg_ParseTuple (args, "s", &name))
return -1;
Py_INCREF (self);
if (PyObject_HasAttrString (self, "__doc__"))
{
gdbpy_ref<> ds_obj (PyObject_GetAttrString (self, "__doc__"));
if (ds_obj != NULL)
{
if (gdbpy_is_string (ds_obj.get ()))
{
docstring = python_string_to_host_string (ds_obj.get ());
if (docstring == NULL)
{
Py_DECREF (self);
return -1;
}
}
}
}
if (! docstring)
docstring.reset (xstrdup (_("This function is not documented.")));
add_internal_function (name, docstring.release (), fnpy_call, self);
return 0;
}
/* Initialize internal function support. */
int
gdbpy_initialize_functions (void)
{
fnpy_object_type.tp_new = PyType_GenericNew;
if (PyType_Ready (&fnpy_object_type) < 0)
return -1;
return gdb_pymodule_addobject (gdb_module, "Function",
(PyObject *) &fnpy_object_type);
}
PyTypeObject fnpy_object_type =
{
PyVarObject_HEAD_INIT (NULL, 0)
"gdb.Function", /*tp_name*/
sizeof (PyObject), /*tp_basicsize*/
0, /*tp_itemsize*/
0, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
"GDB function object", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
fnpy_init, /* tp_init */
0, /* tp_alloc */
};
|
