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fa33c3cd DE |
1 | /* Python interface to program spaces. |
2 | ||
28e7fd62 | 3 | Copyright (C) 2010-2013 Free Software Foundation, Inc. |
fa33c3cd DE |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "python-internal.h" | |
22 | #include "charset.h" | |
23 | #include "progspace.h" | |
24 | #include "objfiles.h" | |
25 | #include "language.h" | |
b3422a0d | 26 | #include "arch-utils.h" |
fa33c3cd DE |
27 | |
28 | typedef struct | |
29 | { | |
30 | PyObject_HEAD | |
31 | ||
32 | /* The corresponding pspace. */ | |
33 | struct program_space *pspace; | |
34 | ||
35 | /* The pretty-printer list of functions. */ | |
36 | PyObject *printers; | |
18a9fc12 | 37 | |
1e611234 PM |
38 | /* The frame filter list of functions. */ |
39 | PyObject *frame_filters; | |
18a9fc12 TT |
40 | /* The type-printer list. */ |
41 | PyObject *type_printers; | |
fa33c3cd DE |
42 | } pspace_object; |
43 | ||
62eec1a5 TT |
44 | static PyTypeObject pspace_object_type |
45 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("pspace_object"); | |
fa33c3cd DE |
46 | |
47 | static const struct program_space_data *pspy_pspace_data_key; | |
48 | ||
49 | \f | |
50 | ||
51 | /* An Objfile method which returns the objfile's file name, or None. */ | |
52 | ||
53 | static PyObject * | |
54 | pspy_get_filename (PyObject *self, void *closure) | |
55 | { | |
56 | pspace_object *obj = (pspace_object *) self; | |
d59b6f6c | 57 | |
fa33c3cd DE |
58 | if (obj->pspace) |
59 | { | |
60 | struct objfile *objfile = obj->pspace->symfile_object_file; | |
d59b6f6c | 61 | |
d31d2fc3 | 62 | if (objfile) |
fa33c3cd DE |
63 | return PyString_Decode (objfile->name, strlen (objfile->name), |
64 | host_charset (), NULL); | |
65 | } | |
66 | Py_RETURN_NONE; | |
67 | } | |
68 | ||
69 | static void | |
70 | pspy_dealloc (PyObject *self) | |
71 | { | |
72 | pspace_object *ps_self = (pspace_object *) self; | |
d59b6f6c | 73 | |
fa33c3cd | 74 | Py_XDECREF (ps_self->printers); |
1e611234 | 75 | Py_XDECREF (ps_self->frame_filters); |
18a9fc12 | 76 | Py_XDECREF (ps_self->type_printers); |
9a27f2c6 | 77 | Py_TYPE (self)->tp_free (self); |
fa33c3cd DE |
78 | } |
79 | ||
80 | static PyObject * | |
81 | pspy_new (PyTypeObject *type, PyObject *args, PyObject *keywords) | |
82 | { | |
83 | pspace_object *self = (pspace_object *) type->tp_alloc (type, 0); | |
d59b6f6c | 84 | |
fa33c3cd DE |
85 | if (self) |
86 | { | |
87 | self->pspace = NULL; | |
88 | ||
89 | self->printers = PyList_New (0); | |
90 | if (!self->printers) | |
91 | { | |
92 | Py_DECREF (self); | |
93 | return NULL; | |
94 | } | |
18a9fc12 | 95 | |
1e611234 PM |
96 | self->frame_filters = PyDict_New (); |
97 | if (!self->frame_filters) | |
98 | { | |
99 | Py_DECREF (self); | |
100 | return NULL; | |
101 | } | |
102 | ||
18a9fc12 TT |
103 | self->type_printers = PyList_New (0); |
104 | if (!self->type_printers) | |
105 | { | |
106 | Py_DECREF (self); | |
107 | return NULL; | |
108 | } | |
fa33c3cd DE |
109 | } |
110 | return (PyObject *) self; | |
111 | } | |
112 | ||
113 | PyObject * | |
114 | pspy_get_printers (PyObject *o, void *ignore) | |
115 | { | |
116 | pspace_object *self = (pspace_object *) o; | |
d59b6f6c | 117 | |
fa33c3cd DE |
118 | Py_INCREF (self->printers); |
119 | return self->printers; | |
120 | } | |
121 | ||
122 | static int | |
123 | pspy_set_printers (PyObject *o, PyObject *value, void *ignore) | |
124 | { | |
125 | PyObject *tmp; | |
126 | pspace_object *self = (pspace_object *) o; | |
d59b6f6c | 127 | |
fa33c3cd DE |
128 | if (! value) |
129 | { | |
130 | PyErr_SetString (PyExc_TypeError, | |
131 | "cannot delete the pretty_printers attribute"); | |
132 | return -1; | |
133 | } | |
134 | ||
135 | if (! PyList_Check (value)) | |
136 | { | |
137 | PyErr_SetString (PyExc_TypeError, | |
138 | "the pretty_printers attribute must be a list"); | |
139 | return -1; | |
140 | } | |
141 | ||
142 | /* Take care in case the LHS and RHS are related somehow. */ | |
143 | tmp = self->printers; | |
144 | Py_INCREF (value); | |
145 | self->printers = value; | |
146 | Py_XDECREF (tmp); | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
1e611234 PM |
151 | /* Return the Python dictionary attribute containing frame filters for |
152 | this program space. */ | |
153 | PyObject * | |
154 | pspy_get_frame_filters (PyObject *o, void *ignore) | |
155 | { | |
156 | pspace_object *self = (pspace_object *) o; | |
157 | ||
158 | Py_INCREF (self->frame_filters); | |
159 | return self->frame_filters; | |
160 | } | |
161 | ||
162 | /* Set this object file's frame filters dictionary to FILTERS. */ | |
163 | static int | |
164 | pspy_set_frame_filters (PyObject *o, PyObject *frame, void *ignore) | |
165 | { | |
166 | PyObject *tmp; | |
167 | pspace_object *self = (pspace_object *) o; | |
168 | ||
169 | if (! frame) | |
170 | { | |
171 | PyErr_SetString (PyExc_TypeError, | |
172 | "cannot delete the frame filter attribute"); | |
173 | return -1; | |
174 | } | |
175 | ||
176 | if (! PyDict_Check (frame)) | |
177 | { | |
178 | PyErr_SetString (PyExc_TypeError, | |
179 | "the frame filter attribute must be a dictionary"); | |
180 | return -1; | |
181 | } | |
182 | ||
183 | /* Take care in case the LHS and RHS are related somehow. */ | |
184 | tmp = self->frame_filters; | |
185 | Py_INCREF (frame); | |
186 | self->frame_filters = frame; | |
187 | Py_XDECREF (tmp); | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
18a9fc12 TT |
192 | /* Get the 'type_printers' attribute. */ |
193 | ||
194 | static PyObject * | |
195 | pspy_get_type_printers (PyObject *o, void *ignore) | |
196 | { | |
197 | pspace_object *self = (pspace_object *) o; | |
198 | ||
199 | Py_INCREF (self->type_printers); | |
200 | return self->type_printers; | |
201 | } | |
202 | ||
203 | /* Set the 'type_printers' attribute. */ | |
204 | ||
205 | static int | |
206 | pspy_set_type_printers (PyObject *o, PyObject *value, void *ignore) | |
207 | { | |
208 | PyObject *tmp; | |
209 | pspace_object *self = (pspace_object *) o; | |
210 | ||
211 | if (! value) | |
212 | { | |
213 | PyErr_SetString (PyExc_TypeError, | |
214 | "cannot delete the type_printers attribute"); | |
215 | return -1; | |
216 | } | |
217 | ||
218 | if (! PyList_Check (value)) | |
219 | { | |
220 | PyErr_SetString (PyExc_TypeError, | |
221 | "the type_printers attribute must be a list"); | |
222 | return -1; | |
223 | } | |
224 | ||
225 | /* Take care in case the LHS and RHS are related somehow. */ | |
226 | tmp = self->type_printers; | |
227 | Py_INCREF (value); | |
228 | self->type_printers = value; | |
229 | Py_XDECREF (tmp); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
fa33c3cd DE |
234 | \f |
235 | ||
236 | /* Clear the PSPACE pointer in a Pspace object and remove the reference. */ | |
237 | ||
238 | static void | |
239 | py_free_pspace (struct program_space *pspace, void *datum) | |
240 | { | |
241 | struct cleanup *cleanup; | |
242 | pspace_object *object = datum; | |
b3422a0d | 243 | struct gdbarch *arch = get_current_arch (); |
fa33c3cd DE |
244 | |
245 | cleanup = ensure_python_env (arch, current_language); | |
246 | object->pspace = NULL; | |
247 | Py_DECREF ((PyObject *) object); | |
248 | do_cleanups (cleanup); | |
249 | } | |
250 | ||
251 | /* Return a borrowed reference to the Python object of type Pspace | |
252 | representing PSPACE. If the object has already been created, | |
253 | return it. Otherwise, create it. Return NULL and set the Python | |
254 | error on failure. */ | |
255 | ||
256 | PyObject * | |
257 | pspace_to_pspace_object (struct program_space *pspace) | |
258 | { | |
259 | pspace_object *object; | |
260 | ||
261 | object = program_space_data (pspace, pspy_pspace_data_key); | |
262 | if (!object) | |
263 | { | |
264 | object = PyObject_New (pspace_object, &pspace_object_type); | |
265 | if (object) | |
266 | { | |
fa33c3cd DE |
267 | object->pspace = pspace; |
268 | ||
269 | object->printers = PyList_New (0); | |
270 | if (!object->printers) | |
271 | { | |
272 | Py_DECREF (object); | |
273 | return NULL; | |
274 | } | |
275 | ||
1e611234 PM |
276 | object->frame_filters = PyDict_New (); |
277 | if (!object->frame_filters) | |
278 | { | |
279 | Py_DECREF (object); | |
280 | return NULL; | |
281 | } | |
282 | ||
18a9fc12 TT |
283 | object->type_printers = PyList_New (0); |
284 | if (!object->type_printers) | |
285 | { | |
286 | Py_DECREF (object); | |
287 | return NULL; | |
288 | } | |
289 | ||
fa33c3cd DE |
290 | set_program_space_data (pspace, pspy_pspace_data_key, object); |
291 | } | |
292 | } | |
293 | ||
294 | return (PyObject *) object; | |
295 | } | |
296 | ||
999633ed | 297 | int |
fa33c3cd DE |
298 | gdbpy_initialize_pspace (void) |
299 | { | |
300 | pspy_pspace_data_key | |
8e260fc0 | 301 | = register_program_space_data_with_cleanup (NULL, py_free_pspace); |
fa33c3cd DE |
302 | |
303 | if (PyType_Ready (&pspace_object_type) < 0) | |
999633ed | 304 | return -1; |
fa33c3cd DE |
305 | |
306 | Py_INCREF (&pspace_object_type); | |
999633ed TT |
307 | return PyModule_AddObject (gdb_module, "Progspace", |
308 | (PyObject *) &pspace_object_type); | |
fa33c3cd DE |
309 | } |
310 | ||
311 | \f | |
312 | ||
313 | static PyGetSetDef pspace_getset[] = | |
314 | { | |
315 | { "filename", pspy_get_filename, NULL, | |
316 | "The progspace's main filename, or None.", NULL }, | |
317 | { "pretty_printers", pspy_get_printers, pspy_set_printers, | |
318 | "Pretty printers.", NULL }, | |
1e611234 PM |
319 | { "frame_filters", pspy_get_frame_filters, pspy_set_frame_filters, |
320 | "Frame filters.", NULL }, | |
18a9fc12 TT |
321 | { "type_printers", pspy_get_type_printers, pspy_set_type_printers, |
322 | "Type printers.", NULL }, | |
fa33c3cd DE |
323 | { NULL } |
324 | }; | |
325 | ||
326 | static PyTypeObject pspace_object_type = | |
327 | { | |
9a27f2c6 | 328 | PyVarObject_HEAD_INIT (NULL, 0) |
fa33c3cd DE |
329 | "gdb.Progspace", /*tp_name*/ |
330 | sizeof (pspace_object), /*tp_basicsize*/ | |
331 | 0, /*tp_itemsize*/ | |
332 | pspy_dealloc, /*tp_dealloc*/ | |
333 | 0, /*tp_print*/ | |
334 | 0, /*tp_getattr*/ | |
335 | 0, /*tp_setattr*/ | |
336 | 0, /*tp_compare*/ | |
337 | 0, /*tp_repr*/ | |
338 | 0, /*tp_as_number*/ | |
339 | 0, /*tp_as_sequence*/ | |
340 | 0, /*tp_as_mapping*/ | |
341 | 0, /*tp_hash */ | |
342 | 0, /*tp_call*/ | |
343 | 0, /*tp_str*/ | |
344 | 0, /*tp_getattro*/ | |
345 | 0, /*tp_setattro*/ | |
346 | 0, /*tp_as_buffer*/ | |
347 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ | |
348 | "GDB progspace object", /* tp_doc */ | |
349 | 0, /* tp_traverse */ | |
350 | 0, /* tp_clear */ | |
351 | 0, /* tp_richcompare */ | |
352 | 0, /* tp_weaklistoffset */ | |
353 | 0, /* tp_iter */ | |
354 | 0, /* tp_iternext */ | |
355 | 0, /* tp_methods */ | |
356 | 0, /* tp_members */ | |
357 | pspace_getset, /* tp_getset */ | |
358 | 0, /* tp_base */ | |
359 | 0, /* tp_dict */ | |
360 | 0, /* tp_descr_get */ | |
361 | 0, /* tp_descr_set */ | |
362 | 0, /* tp_dictoffset */ | |
363 | 0, /* tp_init */ | |
364 | 0, /* tp_alloc */ | |
365 | pspy_new, /* tp_new */ | |
366 | }; |