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adc36818 PM |
1 | /* Python interface to breakpoints |
2 | ||
0b302171 | 3 | Copyright (C) 2008-2012 Free Software Foundation, Inc. |
adc36818 PM |
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 "value.h" | |
22 | #include "exceptions.h" | |
23 | #include "python-internal.h" | |
49a8461d | 24 | #include "python.h" |
adc36818 PM |
25 | #include "charset.h" |
26 | #include "breakpoint.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "gdbthread.h" | |
29 | #include "observer.h" | |
30 | #include "cli/cli-script.h" | |
31 | #include "ada-lang.h" | |
7371cf6d PM |
32 | #include "arch-utils.h" |
33 | #include "language.h" | |
adc36818 | 34 | |
adc36818 PM |
35 | /* Number of live breakpoints. */ |
36 | static int bppy_live; | |
37 | ||
38 | /* Variables used to pass information between the Breakpoint | |
39 | constructor and the breakpoint-created hook function. */ | |
cc72b2a2 | 40 | breakpoint_object *bppy_pending_object; |
adc36818 | 41 | |
7371cf6d PM |
42 | /* Function that is called when a Python condition is evaluated. */ |
43 | static char * const stop_func = "stop"; | |
44 | ||
adc36818 PM |
45 | /* This is used to initialize various gdb.bp_* constants. */ |
46 | struct pybp_code | |
47 | { | |
48 | /* The name. */ | |
49 | const char *name; | |
50 | /* The code. */ | |
51 | enum type_code code; | |
52 | }; | |
53 | ||
54 | /* Entries related to the type of user set breakpoints. */ | |
55 | static struct pybp_code pybp_codes[] = | |
56 | { | |
57 | { "BP_NONE", bp_none}, | |
58 | { "BP_BREAKPOINT", bp_breakpoint}, | |
59 | { "BP_WATCHPOINT", bp_watchpoint}, | |
60 | { "BP_HARDWARE_WATCHPOINT", bp_hardware_watchpoint}, | |
61 | { "BP_READ_WATCHPOINT", bp_read_watchpoint}, | |
62 | { "BP_ACCESS_WATCHPOINT", bp_access_watchpoint}, | |
63 | {NULL} /* Sentinel. */ | |
64 | }; | |
65 | ||
66 | /* Entries related to the type of watchpoint. */ | |
67 | static struct pybp_code pybp_watch_types[] = | |
68 | { | |
69 | { "WP_READ", hw_read}, | |
70 | { "WP_WRITE", hw_write}, | |
71 | { "WP_ACCESS", hw_access}, | |
72 | {NULL} /* Sentinel. */ | |
73 | }; | |
74 | ||
adc36818 PM |
75 | /* Python function which checks the validity of a breakpoint object. */ |
76 | static PyObject * | |
77 | bppy_is_valid (PyObject *self, PyObject *args) | |
78 | { | |
79 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
80 | ||
81 | if (self_bp->bp) | |
82 | Py_RETURN_TRUE; | |
83 | Py_RETURN_FALSE; | |
84 | } | |
85 | ||
86 | /* Python function to test whether or not the breakpoint is enabled. */ | |
87 | static PyObject * | |
88 | bppy_get_enabled (PyObject *self, void *closure) | |
89 | { | |
90 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
91 | ||
92 | BPPY_REQUIRE_VALID (self_bp); | |
93 | if (! self_bp->bp) | |
94 | Py_RETURN_FALSE; | |
95 | if (self_bp->bp->enable_state == bp_enabled) | |
96 | Py_RETURN_TRUE; | |
97 | Py_RETURN_FALSE; | |
98 | } | |
99 | ||
100 | /* Python function to test whether or not the breakpoint is silent. */ | |
101 | static PyObject * | |
102 | bppy_get_silent (PyObject *self, void *closure) | |
103 | { | |
104 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
105 | ||
106 | BPPY_REQUIRE_VALID (self_bp); | |
107 | if (self_bp->bp->silent) | |
108 | Py_RETURN_TRUE; | |
109 | Py_RETURN_FALSE; | |
110 | } | |
111 | ||
112 | /* Python function to set the enabled state of a breakpoint. */ | |
113 | static int | |
114 | bppy_set_enabled (PyObject *self, PyObject *newvalue, void *closure) | |
115 | { | |
116 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
117 | int cmp; | |
76dce0be | 118 | volatile struct gdb_exception except; |
adc36818 PM |
119 | |
120 | BPPY_SET_REQUIRE_VALID (self_bp); | |
121 | ||
122 | if (newvalue == NULL) | |
123 | { | |
124 | PyErr_SetString (PyExc_TypeError, | |
125 | _("Cannot delete `enabled' attribute.")); | |
126 | ||
127 | return -1; | |
128 | } | |
129 | else if (! PyBool_Check (newvalue)) | |
130 | { | |
131 | PyErr_SetString (PyExc_TypeError, | |
132 | _("The value of `enabled' must be a boolean.")); | |
133 | return -1; | |
134 | } | |
135 | ||
136 | cmp = PyObject_IsTrue (newvalue); | |
137 | if (cmp < 0) | |
138 | return -1; | |
76dce0be PM |
139 | |
140 | TRY_CATCH (except, RETURN_MASK_ALL) | |
141 | { | |
142 | if (cmp == 1) | |
143 | enable_breakpoint (self_bp->bp); | |
144 | else | |
145 | disable_breakpoint (self_bp->bp); | |
146 | } | |
147 | GDB_PY_SET_HANDLE_EXCEPTION (except); | |
148 | ||
adc36818 PM |
149 | return 0; |
150 | } | |
151 | ||
152 | /* Python function to set the 'silent' state of a breakpoint. */ | |
153 | static int | |
154 | bppy_set_silent (PyObject *self, PyObject *newvalue, void *closure) | |
155 | { | |
156 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
157 | int cmp; | |
158 | ||
159 | BPPY_SET_REQUIRE_VALID (self_bp); | |
160 | ||
161 | if (newvalue == NULL) | |
162 | { | |
163 | PyErr_SetString (PyExc_TypeError, | |
164 | _("Cannot delete `silent' attribute.")); | |
165 | return -1; | |
166 | } | |
167 | else if (! PyBool_Check (newvalue)) | |
168 | { | |
169 | PyErr_SetString (PyExc_TypeError, | |
170 | _("The value of `silent' must be a boolean.")); | |
171 | return -1; | |
172 | } | |
173 | ||
174 | cmp = PyObject_IsTrue (newvalue); | |
175 | if (cmp < 0) | |
176 | return -1; | |
177 | else | |
45a43567 | 178 | breakpoint_set_silent (self_bp->bp, cmp); |
adc36818 PM |
179 | |
180 | return 0; | |
181 | } | |
182 | ||
183 | /* Python function to set the thread of a breakpoint. */ | |
184 | static int | |
185 | bppy_set_thread (PyObject *self, PyObject *newvalue, void *closure) | |
186 | { | |
187 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
74aedc46 | 188 | long id; |
adc36818 PM |
189 | |
190 | BPPY_SET_REQUIRE_VALID (self_bp); | |
191 | ||
192 | if (newvalue == NULL) | |
193 | { | |
194 | PyErr_SetString (PyExc_TypeError, | |
195 | _("Cannot delete `thread' attribute.")); | |
196 | return -1; | |
197 | } | |
198 | else if (PyInt_Check (newvalue)) | |
199 | { | |
74aedc46 TT |
200 | if (! gdb_py_int_as_long (newvalue, &id)) |
201 | return -1; | |
202 | ||
adc36818 PM |
203 | if (! valid_thread_id (id)) |
204 | { | |
205 | PyErr_SetString (PyExc_RuntimeError, | |
206 | _("Invalid thread ID.")); | |
207 | return -1; | |
208 | } | |
209 | } | |
210 | else if (newvalue == Py_None) | |
211 | id = -1; | |
212 | else | |
213 | { | |
214 | PyErr_SetString (PyExc_TypeError, | |
215 | _("The value of `thread' must be an integer or None.")); | |
216 | return -1; | |
217 | } | |
218 | ||
45a43567 | 219 | breakpoint_set_thread (self_bp->bp, id); |
adc36818 PM |
220 | |
221 | return 0; | |
222 | } | |
223 | ||
224 | /* Python function to set the (Ada) task of a breakpoint. */ | |
225 | static int | |
226 | bppy_set_task (PyObject *self, PyObject *newvalue, void *closure) | |
227 | { | |
228 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
74aedc46 | 229 | long id; |
76dce0be PM |
230 | int valid_id = 0; |
231 | volatile struct gdb_exception except; | |
adc36818 PM |
232 | |
233 | BPPY_SET_REQUIRE_VALID (self_bp); | |
234 | ||
235 | if (newvalue == NULL) | |
236 | { | |
237 | PyErr_SetString (PyExc_TypeError, | |
238 | _("Cannot delete `task' attribute.")); | |
239 | return -1; | |
240 | } | |
241 | else if (PyInt_Check (newvalue)) | |
242 | { | |
74aedc46 TT |
243 | if (! gdb_py_int_as_long (newvalue, &id)) |
244 | return -1; | |
245 | ||
76dce0be PM |
246 | TRY_CATCH (except, RETURN_MASK_ALL) |
247 | { | |
248 | valid_id = valid_task_id (id); | |
249 | } | |
250 | GDB_PY_SET_HANDLE_EXCEPTION (except); | |
251 | ||
252 | if (! valid_id) | |
adc36818 PM |
253 | { |
254 | PyErr_SetString (PyExc_RuntimeError, | |
255 | _("Invalid task ID.")); | |
256 | return -1; | |
257 | } | |
258 | } | |
259 | else if (newvalue == Py_None) | |
260 | id = 0; | |
261 | else | |
262 | { | |
263 | PyErr_SetString (PyExc_TypeError, | |
264 | _("The value of `task' must be an integer or None.")); | |
265 | return -1; | |
266 | } | |
267 | ||
45a43567 | 268 | breakpoint_set_task (self_bp->bp, id); |
adc36818 PM |
269 | |
270 | return 0; | |
271 | } | |
272 | ||
94b6973e PM |
273 | /* Python function which deletes the underlying GDB breakpoint. This |
274 | triggers the breakpoint_deleted observer which will call | |
275 | gdbpy_breakpoint_deleted; that function cleans up the Python | |
276 | sections. */ | |
277 | ||
278 | static PyObject * | |
279 | bppy_delete_breakpoint (PyObject *self, PyObject *args) | |
280 | { | |
281 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
76dce0be | 282 | volatile struct gdb_exception except; |
94b6973e PM |
283 | |
284 | BPPY_REQUIRE_VALID (self_bp); | |
285 | ||
76dce0be PM |
286 | TRY_CATCH (except, RETURN_MASK_ALL) |
287 | { | |
288 | delete_breakpoint (self_bp->bp); | |
289 | } | |
290 | GDB_PY_HANDLE_EXCEPTION (except); | |
94b6973e PM |
291 | |
292 | Py_RETURN_NONE; | |
293 | } | |
294 | ||
adc36818 PM |
295 | |
296 | /* Python function to set the ignore count of a breakpoint. */ | |
297 | static int | |
298 | bppy_set_ignore_count (PyObject *self, PyObject *newvalue, void *closure) | |
299 | { | |
300 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
301 | long value; | |
5d9c5995 | 302 | volatile struct gdb_exception except; |
adc36818 PM |
303 | |
304 | BPPY_SET_REQUIRE_VALID (self_bp); | |
305 | ||
306 | if (newvalue == NULL) | |
307 | { | |
308 | PyErr_SetString (PyExc_TypeError, | |
309 | _("Cannot delete `ignore_count' attribute.")); | |
310 | return -1; | |
311 | } | |
312 | else if (! PyInt_Check (newvalue)) | |
313 | { | |
314 | PyErr_SetString (PyExc_TypeError, | |
315 | _("The value of `ignore_count' must be an integer.")); | |
316 | return -1; | |
317 | } | |
318 | ||
74aedc46 TT |
319 | if (! gdb_py_int_as_long (newvalue, &value)) |
320 | return -1; | |
321 | ||
adc36818 PM |
322 | if (value < 0) |
323 | value = 0; | |
5d9c5995 PM |
324 | |
325 | TRY_CATCH (except, RETURN_MASK_ALL) | |
326 | { | |
327 | set_ignore_count (self_bp->number, (int) value, 0); | |
328 | } | |
329 | GDB_PY_SET_HANDLE_EXCEPTION (except); | |
adc36818 PM |
330 | |
331 | return 0; | |
332 | } | |
333 | ||
334 | /* Python function to set the hit count of a breakpoint. */ | |
335 | static int | |
336 | bppy_set_hit_count (PyObject *self, PyObject *newvalue, void *closure) | |
337 | { | |
338 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
339 | ||
340 | BPPY_SET_REQUIRE_VALID (self_bp); | |
341 | ||
342 | if (newvalue == NULL) | |
343 | { | |
344 | PyErr_SetString (PyExc_TypeError, | |
345 | _("Cannot delete `hit_count' attribute.")); | |
346 | return -1; | |
347 | } | |
74aedc46 | 348 | else |
adc36818 | 349 | { |
74aedc46 TT |
350 | long value; |
351 | ||
352 | if (! gdb_py_int_as_long (newvalue, &value)) | |
353 | return -1; | |
354 | ||
355 | if (value != 0) | |
356 | { | |
357 | PyErr_SetString (PyExc_AttributeError, | |
358 | _("The value of `hit_count' must be zero.")); | |
359 | return -1; | |
360 | } | |
adc36818 PM |
361 | } |
362 | ||
363 | self_bp->bp->hit_count = 0; | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
368 | /* Python function to get the location of a breakpoint. */ | |
369 | static PyObject * | |
370 | bppy_get_location (PyObject *self, void *closure) | |
371 | { | |
372 | char *str; | |
373 | breakpoint_object *obj = (breakpoint_object *) self; | |
374 | ||
375 | BPPY_REQUIRE_VALID (obj); | |
376 | ||
377 | if (obj->bp->type != bp_breakpoint) | |
378 | Py_RETURN_NONE; | |
379 | ||
380 | str = obj->bp->addr_string; | |
381 | ||
382 | if (! str) | |
383 | str = ""; | |
384 | return PyString_Decode (str, strlen (str), host_charset (), NULL); | |
385 | } | |
386 | ||
387 | /* Python function to get the breakpoint expression. */ | |
388 | static PyObject * | |
389 | bppy_get_expression (PyObject *self, void *closure) | |
390 | { | |
391 | char *str; | |
392 | breakpoint_object *obj = (breakpoint_object *) self; | |
3a5c3e22 | 393 | struct watchpoint *wp; |
adc36818 PM |
394 | |
395 | BPPY_REQUIRE_VALID (obj); | |
396 | ||
3a5c3e22 | 397 | if (!is_watchpoint (obj->bp)) |
adc36818 PM |
398 | Py_RETURN_NONE; |
399 | ||
3a5c3e22 PA |
400 | wp = (struct watchpoint *) obj->bp; |
401 | ||
402 | str = wp->exp_string; | |
adc36818 PM |
403 | if (! str) |
404 | str = ""; | |
405 | ||
406 | return PyString_Decode (str, strlen (str), host_charset (), NULL); | |
407 | } | |
408 | ||
409 | /* Python function to get the condition expression of a breakpoint. */ | |
410 | static PyObject * | |
411 | bppy_get_condition (PyObject *self, void *closure) | |
412 | { | |
413 | char *str; | |
414 | breakpoint_object *obj = (breakpoint_object *) self; | |
415 | ||
416 | BPPY_REQUIRE_VALID (obj); | |
417 | ||
418 | str = obj->bp->cond_string; | |
419 | if (! str) | |
420 | Py_RETURN_NONE; | |
421 | ||
422 | return PyString_Decode (str, strlen (str), host_charset (), NULL); | |
423 | } | |
424 | ||
8dc78533 JK |
425 | /* Returns 0 on success. Returns -1 on error, with a python exception set. |
426 | */ | |
427 | ||
adc36818 PM |
428 | static int |
429 | bppy_set_condition (PyObject *self, PyObject *newvalue, void *closure) | |
430 | { | |
431 | char *exp; | |
432 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
433 | volatile struct gdb_exception except; | |
434 | ||
435 | BPPY_SET_REQUIRE_VALID (self_bp); | |
436 | ||
437 | if (newvalue == NULL) | |
438 | { | |
439 | PyErr_SetString (PyExc_TypeError, | |
440 | _("Cannot delete `condition' attribute.")); | |
441 | return -1; | |
442 | } | |
443 | else if (newvalue == Py_None) | |
444 | exp = ""; | |
445 | else | |
446 | { | |
447 | exp = python_string_to_host_string (newvalue); | |
448 | if (exp == NULL) | |
449 | return -1; | |
450 | } | |
451 | ||
452 | TRY_CATCH (except, RETURN_MASK_ALL) | |
453 | { | |
454 | set_breakpoint_condition (self_bp->bp, exp, 0); | |
455 | } | |
f3be5b64 MS |
456 | |
457 | if (newvalue != Py_None) | |
458 | xfree (exp); | |
459 | ||
adc36818 PM |
460 | GDB_PY_SET_HANDLE_EXCEPTION (except); |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
465 | /* Python function to get the commands attached to a breakpoint. */ | |
466 | static PyObject * | |
467 | bppy_get_commands (PyObject *self, void *closure) | |
468 | { | |
469 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
470 | struct breakpoint *bp = self_bp->bp; | |
471 | long length; | |
472 | volatile struct gdb_exception except; | |
473 | struct ui_file *string_file; | |
474 | struct cleanup *chain; | |
475 | PyObject *result; | |
476 | char *cmdstr; | |
477 | ||
478 | BPPY_REQUIRE_VALID (self_bp); | |
479 | ||
480 | if (! self_bp->bp->commands) | |
481 | Py_RETURN_NONE; | |
482 | ||
483 | string_file = mem_fileopen (); | |
484 | chain = make_cleanup_ui_file_delete (string_file); | |
485 | ||
79a45e25 | 486 | ui_out_redirect (current_uiout, string_file); |
adc36818 PM |
487 | TRY_CATCH (except, RETURN_MASK_ALL) |
488 | { | |
79a45e25 | 489 | print_command_lines (current_uiout, breakpoint_commands (bp), 0); |
adc36818 | 490 | } |
79a45e25 | 491 | ui_out_redirect (current_uiout, NULL); |
adc36818 PM |
492 | GDB_PY_HANDLE_EXCEPTION (except); |
493 | ||
4c2d5724 MS |
494 | cmdstr = ui_file_xstrdup (string_file, &length); |
495 | make_cleanup (xfree, cmdstr); | |
adc36818 PM |
496 | result = PyString_Decode (cmdstr, strlen (cmdstr), host_charset (), NULL); |
497 | do_cleanups (chain); | |
adc36818 PM |
498 | return result; |
499 | } | |
500 | ||
501 | /* Python function to get the breakpoint type. */ | |
502 | static PyObject * | |
503 | bppy_get_type (PyObject *self, void *closure) | |
504 | { | |
505 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
506 | ||
507 | BPPY_REQUIRE_VALID (self_bp); | |
508 | ||
509 | return PyInt_FromLong (self_bp->bp->type); | |
510 | } | |
511 | ||
84f4c1fe PM |
512 | /* Python function to get the visibility of the breakpoint. */ |
513 | ||
514 | static PyObject * | |
515 | bppy_get_visibility (PyObject *self, void *closure) | |
516 | { | |
517 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
518 | ||
519 | BPPY_REQUIRE_VALID (self_bp); | |
520 | ||
521 | if (self_bp->bp->number < 0) | |
522 | Py_RETURN_FALSE; | |
523 | ||
524 | Py_RETURN_TRUE; | |
525 | } | |
526 | ||
adc36818 PM |
527 | /* Python function to get the breakpoint's number. */ |
528 | static PyObject * | |
529 | bppy_get_number (PyObject *self, void *closure) | |
530 | { | |
531 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
532 | ||
533 | BPPY_REQUIRE_VALID (self_bp); | |
534 | ||
535 | return PyInt_FromLong (self_bp->number); | |
536 | } | |
537 | ||
538 | /* Python function to get the breakpoint's thread ID. */ | |
539 | static PyObject * | |
540 | bppy_get_thread (PyObject *self, void *closure) | |
541 | { | |
542 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
543 | ||
544 | BPPY_REQUIRE_VALID (self_bp); | |
545 | ||
546 | if (self_bp->bp->thread == -1) | |
547 | Py_RETURN_NONE; | |
548 | ||
549 | return PyInt_FromLong (self_bp->bp->thread); | |
550 | } | |
551 | ||
552 | /* Python function to get the breakpoint's task ID (in Ada). */ | |
553 | static PyObject * | |
554 | bppy_get_task (PyObject *self, void *closure) | |
555 | { | |
556 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
557 | ||
558 | BPPY_REQUIRE_VALID (self_bp); | |
559 | ||
560 | if (self_bp->bp->task == 0) | |
561 | Py_RETURN_NONE; | |
562 | ||
563 | return PyInt_FromLong (self_bp->bp->task); | |
564 | } | |
565 | ||
566 | /* Python function to get the breakpoint's hit count. */ | |
567 | static PyObject * | |
568 | bppy_get_hit_count (PyObject *self, void *closure) | |
569 | { | |
570 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
571 | ||
572 | BPPY_REQUIRE_VALID (self_bp); | |
573 | ||
574 | return PyInt_FromLong (self_bp->bp->hit_count); | |
575 | } | |
576 | ||
577 | /* Python function to get the breakpoint's ignore count. */ | |
578 | static PyObject * | |
579 | bppy_get_ignore_count (PyObject *self, void *closure) | |
580 | { | |
581 | breakpoint_object *self_bp = (breakpoint_object *) self; | |
582 | ||
583 | BPPY_REQUIRE_VALID (self_bp); | |
584 | ||
585 | return PyInt_FromLong (self_bp->bp->ignore_count); | |
586 | } | |
587 | ||
588 | /* Python function to create a new breakpoint. */ | |
7371cf6d PM |
589 | static int |
590 | bppy_init (PyObject *self, PyObject *args, PyObject *kwargs) | |
adc36818 | 591 | { |
84f4c1fe | 592 | static char *keywords[] = { "spec", "type", "wp_class", "internal", NULL }; |
ddd49eee | 593 | const char *spec; |
adc36818 PM |
594 | int type = bp_breakpoint; |
595 | int access_type = hw_write; | |
84f4c1fe PM |
596 | PyObject *internal = NULL; |
597 | int internal_bp = 0; | |
adc36818 PM |
598 | volatile struct gdb_exception except; |
599 | ||
84f4c1fe PM |
600 | if (! PyArg_ParseTupleAndKeywords (args, kwargs, "s|iiO", keywords, |
601 | &spec, &type, &access_type, &internal)) | |
7371cf6d | 602 | return -1; |
adc36818 | 603 | |
84f4c1fe PM |
604 | if (internal) |
605 | { | |
606 | internal_bp = PyObject_IsTrue (internal); | |
607 | if (internal_bp == -1) | |
7371cf6d | 608 | return -1; |
84f4c1fe PM |
609 | } |
610 | ||
7371cf6d | 611 | bppy_pending_object = (breakpoint_object *) self; |
adc36818 PM |
612 | bppy_pending_object->number = -1; |
613 | bppy_pending_object->bp = NULL; | |
614 | ||
615 | TRY_CATCH (except, RETURN_MASK_ALL) | |
616 | { | |
ddd49eee TT |
617 | char *copy = xstrdup (spec); |
618 | struct cleanup *cleanup = make_cleanup (xfree, copy); | |
619 | ||
adc36818 PM |
620 | switch (type) |
621 | { | |
622 | case bp_breakpoint: | |
623 | { | |
624 | create_breakpoint (python_gdbarch, | |
e7e0cddf | 625 | copy, NULL, -1, NULL, |
adc36818 | 626 | 0, |
0fb4aa4b | 627 | 0, bp_breakpoint, |
adc36818 PM |
628 | 0, |
629 | AUTO_BOOLEAN_TRUE, | |
348d480f | 630 | &bkpt_breakpoint_ops, |
44f238bb | 631 | 0, 1, internal_bp, 0); |
adc36818 PM |
632 | break; |
633 | } | |
634 | case bp_watchpoint: | |
635 | { | |
636 | if (access_type == hw_write) | |
ddd49eee | 637 | watch_command_wrapper (copy, 0, internal_bp); |
adc36818 | 638 | else if (access_type == hw_access) |
ddd49eee | 639 | awatch_command_wrapper (copy, 0, internal_bp); |
adc36818 | 640 | else if (access_type == hw_read) |
ddd49eee | 641 | rwatch_command_wrapper (copy, 0, internal_bp); |
adc36818 PM |
642 | else |
643 | error(_("Cannot understand watchpoint access type.")); | |
644 | break; | |
645 | } | |
646 | default: | |
647 | error(_("Do not understand breakpoint type to set.")); | |
648 | } | |
ddd49eee TT |
649 | |
650 | do_cleanups (cleanup); | |
adc36818 PM |
651 | } |
652 | if (except.reason < 0) | |
653 | { | |
7371cf6d PM |
654 | PyErr_Format (except.reason == RETURN_QUIT |
655 | ? PyExc_KeyboardInterrupt : PyExc_RuntimeError, | |
656 | "%s", except.message); | |
657 | return -1; | |
adc36818 PM |
658 | } |
659 | ||
7371cf6d PM |
660 | BPPY_SET_REQUIRE_VALID ((breakpoint_object *) self); |
661 | return 0; | |
adc36818 PM |
662 | } |
663 | ||
664 | \f | |
665 | ||
84f4c1fe PM |
666 | static int |
667 | build_bp_list (struct breakpoint *b, void *arg) | |
668 | { | |
669 | PyObject *list = arg; | |
50389644 | 670 | PyObject *bp = (PyObject *) b->py_bp_object; |
84f4c1fe PM |
671 | int iserr = 0; |
672 | ||
673 | /* Not all breakpoints will have a companion Python object. | |
674 | Only breakpoints that were created via bppy_new, or | |
675 | breakpoints that were created externally and are tracked by | |
676 | the Python Scripting API. */ | |
677 | if (bp) | |
678 | iserr = PyList_Append (list, bp); | |
679 | ||
680 | if (iserr == -1) | |
681 | return 1; | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
adc36818 PM |
686 | /* Static function to return a tuple holding all breakpoints. */ |
687 | ||
688 | PyObject * | |
689 | gdbpy_breakpoints (PyObject *self, PyObject *args) | |
690 | { | |
27ca1a5b | 691 | PyObject *list, *tuple; |
adc36818 PM |
692 | |
693 | if (bppy_live == 0) | |
694 | Py_RETURN_NONE; | |
695 | ||
84f4c1fe PM |
696 | list = PyList_New (0); |
697 | if (!list) | |
698 | return NULL; | |
d59b6f6c | 699 | |
84f4c1fe PM |
700 | /* If iteratre_over_breakpoints returns non NULL it signals an error |
701 | condition. In that case abandon building the list and return | |
702 | NULL. */ | |
703 | if (iterate_over_breakpoints (build_bp_list, list) != NULL) | |
704 | { | |
705 | Py_DECREF (list); | |
706 | return NULL; | |
adc36818 | 707 | } |
84f4c1fe | 708 | |
27ca1a5b PM |
709 | tuple = PyList_AsTuple (list); |
710 | Py_DECREF (list); | |
711 | ||
712 | return tuple; | |
adc36818 PM |
713 | } |
714 | ||
7371cf6d PM |
715 | /* Call the "stop" method (if implemented) in the breakpoint |
716 | class. If the method returns True, the inferior will be | |
717 | stopped at the breakpoint. Otherwise the inferior will be | |
718 | allowed to continue. */ | |
719 | ||
720 | int | |
721 | gdbpy_should_stop (struct breakpoint_object *bp_obj) | |
722 | { | |
723 | int stop = 1; | |
724 | ||
725 | PyObject *py_bp = (PyObject *) bp_obj; | |
726 | struct breakpoint *b = bp_obj->bp; | |
727 | struct gdbarch *garch = b->gdbarch ? b->gdbarch : get_current_arch (); | |
728 | struct cleanup *cleanup = ensure_python_env (garch, current_language); | |
729 | ||
cc72b2a2 KP |
730 | if (bp_obj->is_finish_bp) |
731 | bpfinishpy_pre_stop_hook (bp_obj); | |
732 | ||
7371cf6d PM |
733 | if (PyObject_HasAttrString (py_bp, stop_func)) |
734 | { | |
735 | PyObject *result = PyObject_CallMethod (py_bp, stop_func, NULL); | |
736 | ||
737 | if (result) | |
738 | { | |
739 | int evaluate = PyObject_IsTrue (result); | |
740 | ||
741 | if (evaluate == -1) | |
742 | gdbpy_print_stack (); | |
743 | ||
744 | /* If the "stop" function returns False that means | |
745 | the Python breakpoint wants GDB to continue. */ | |
746 | if (! evaluate) | |
747 | stop = 0; | |
748 | ||
749 | Py_DECREF (result); | |
750 | } | |
751 | else | |
752 | gdbpy_print_stack (); | |
753 | } | |
cc72b2a2 KP |
754 | |
755 | if (bp_obj->is_finish_bp) | |
756 | bpfinishpy_post_stop_hook (bp_obj); | |
757 | ||
7371cf6d PM |
758 | do_cleanups (cleanup); |
759 | ||
760 | return stop; | |
761 | } | |
762 | ||
763 | /* Checks if the "stop" method exists in this breakpoint. | |
764 | Used by condition_command to ensure mutual exclusion of breakpoint | |
765 | conditions. */ | |
766 | ||
767 | int | |
768 | gdbpy_breakpoint_has_py_cond (struct breakpoint_object *bp_obj) | |
769 | { | |
770 | int has_func = 0; | |
771 | PyObject *py_bp = (PyObject *) bp_obj; | |
772 | struct gdbarch *garch = bp_obj->bp->gdbarch ? bp_obj->bp->gdbarch : | |
773 | get_current_arch (); | |
774 | struct cleanup *cleanup = ensure_python_env (garch, current_language); | |
775 | ||
5fe41fbf TT |
776 | if (py_bp != NULL) |
777 | has_func = PyObject_HasAttrString (py_bp, stop_func); | |
7371cf6d | 778 | |
7371cf6d PM |
779 | do_cleanups (cleanup); |
780 | ||
781 | return has_func; | |
782 | } | |
783 | ||
adc36818 PM |
784 | \f |
785 | ||
786 | /* Event callback functions. */ | |
787 | ||
788 | /* Callback that is used when a breakpoint is created. This function | |
789 | will create a new Python breakpoint object. */ | |
790 | static void | |
8d3788bd | 791 | gdbpy_breakpoint_created (struct breakpoint *bp) |
adc36818 PM |
792 | { |
793 | breakpoint_object *newbp; | |
adc36818 PM |
794 | PyGILState_STATE state; |
795 | ||
f6d90398 | 796 | if (bp->number < 0 && bppy_pending_object == NULL) |
84f4c1fe PM |
797 | return; |
798 | ||
adc36818 PM |
799 | if (bp->type != bp_breakpoint |
800 | && bp->type != bp_watchpoint | |
801 | && bp->type != bp_hardware_watchpoint | |
802 | && bp->type != bp_read_watchpoint | |
803 | && bp->type != bp_access_watchpoint) | |
804 | return; | |
805 | ||
adc36818 PM |
806 | state = PyGILState_Ensure (); |
807 | ||
808 | if (bppy_pending_object) | |
809 | { | |
810 | newbp = bppy_pending_object; | |
811 | bppy_pending_object = NULL; | |
812 | } | |
813 | else | |
814 | newbp = PyObject_New (breakpoint_object, &breakpoint_object_type); | |
815 | if (newbp) | |
816 | { | |
8d3788bd | 817 | newbp->number = bp->number; |
adc36818 | 818 | newbp->bp = bp; |
50389644 | 819 | newbp->bp->py_bp_object = newbp; |
cc72b2a2 | 820 | newbp->is_finish_bp = 0; |
adc36818 | 821 | Py_INCREF (newbp); |
84f4c1fe PM |
822 | ++bppy_live; |
823 | } | |
824 | else | |
825 | { | |
826 | PyErr_SetString (PyExc_RuntimeError, | |
827 | _("Error while creating breakpoint from GDB.")); | |
828 | gdbpy_print_stack (); | |
adc36818 | 829 | } |
adc36818 PM |
830 | |
831 | PyGILState_Release (state); | |
832 | } | |
833 | ||
834 | /* Callback that is used when a breakpoint is deleted. This will | |
835 | invalidate the corresponding Python object. */ | |
836 | static void | |
8d3788bd | 837 | gdbpy_breakpoint_deleted (struct breakpoint *b) |
adc36818 | 838 | { |
8d3788bd | 839 | int num = b->number; |
adc36818 | 840 | PyGILState_STATE state; |
84f4c1fe PM |
841 | struct breakpoint *bp = NULL; |
842 | breakpoint_object *bp_obj; | |
adc36818 PM |
843 | |
844 | state = PyGILState_Ensure (); | |
84f4c1fe | 845 | bp = get_breakpoint (num); |
d930d06e | 846 | if (bp) |
adc36818 | 847 | { |
d930d06e TT |
848 | bp_obj = bp->py_bp_object; |
849 | if (bp_obj) | |
850 | { | |
851 | bp_obj->bp = NULL; | |
852 | --bppy_live; | |
853 | Py_DECREF (bp_obj); | |
854 | } | |
adc36818 PM |
855 | } |
856 | PyGILState_Release (state); | |
857 | } | |
858 | ||
859 | \f | |
860 | ||
861 | /* Initialize the Python breakpoint code. */ | |
862 | void | |
863 | gdbpy_initialize_breakpoints (void) | |
864 | { | |
865 | int i; | |
866 | ||
6a1b1664 | 867 | breakpoint_object_type.tp_new = PyType_GenericNew; |
adc36818 PM |
868 | if (PyType_Ready (&breakpoint_object_type) < 0) |
869 | return; | |
870 | ||
871 | Py_INCREF (&breakpoint_object_type); | |
872 | PyModule_AddObject (gdb_module, "Breakpoint", | |
873 | (PyObject *) &breakpoint_object_type); | |
874 | ||
875 | observer_attach_breakpoint_created (gdbpy_breakpoint_created); | |
876 | observer_attach_breakpoint_deleted (gdbpy_breakpoint_deleted); | |
877 | ||
878 | /* Add breakpoint types constants. */ | |
879 | for (i = 0; pybp_codes[i].name; ++i) | |
880 | { | |
881 | if (PyModule_AddIntConstant (gdb_module, | |
882 | /* Cast needed for Python 2.4. */ | |
883 | (char *) pybp_codes[i].name, | |
884 | pybp_codes[i].code) < 0) | |
885 | return; | |
886 | } | |
887 | ||
888 | /* Add watchpoint types constants. */ | |
889 | for (i = 0; pybp_watch_types[i].name; ++i) | |
890 | { | |
891 | if (PyModule_AddIntConstant (gdb_module, | |
892 | /* Cast needed for Python 2.4. */ | |
893 | (char *) pybp_watch_types[i].name, | |
894 | pybp_watch_types[i].code) < 0) | |
895 | return; | |
896 | } | |
897 | ||
898 | } | |
899 | ||
900 | \f | |
901 | ||
7371cf6d PM |
902 | /* Helper function that overrides this Python object's |
903 | PyObject_GenericSetAttr to allow extra validation of the attribute | |
904 | being set. */ | |
905 | ||
906 | static int | |
907 | local_setattro (PyObject *self, PyObject *name, PyObject *v) | |
908 | { | |
909 | breakpoint_object *obj = (breakpoint_object *) self; | |
910 | char *attr = python_string_to_host_string (name); | |
911 | ||
912 | if (attr == NULL) | |
913 | return -1; | |
914 | ||
915 | /* If the attribute trying to be set is the "stop" method, | |
916 | but we already have a condition set in the CLI, disallow this | |
917 | operation. */ | |
918 | if (strcmp (attr, stop_func) == 0 && obj->bp->cond_string) | |
919 | { | |
920 | xfree (attr); | |
921 | PyErr_SetString (PyExc_RuntimeError, | |
922 | _("Cannot set 'stop' method. There is an " \ | |
923 | "existing GDB condition attached to the " \ | |
924 | "breakpoint.")); | |
925 | return -1; | |
926 | } | |
927 | ||
928 | xfree (attr); | |
929 | ||
930 | return PyObject_GenericSetAttr ((PyObject *)self, name, v); | |
931 | } | |
932 | ||
adc36818 PM |
933 | static PyGetSetDef breakpoint_object_getset[] = { |
934 | { "enabled", bppy_get_enabled, bppy_set_enabled, | |
935 | "Boolean telling whether the breakpoint is enabled.", NULL }, | |
936 | { "silent", bppy_get_silent, bppy_set_silent, | |
937 | "Boolean telling whether the breakpoint is silent.", NULL }, | |
938 | { "thread", bppy_get_thread, bppy_set_thread, | |
939 | "Thread ID for the breakpoint.\n\ | |
940 | If the value is a thread ID (integer), then this is a thread-specific breakpoint.\n\ | |
941 | If the value is None, then this breakpoint is not thread-specific.\n\ | |
942 | No other type of value can be used.", NULL }, | |
943 | { "task", bppy_get_task, bppy_set_task, | |
944 | "Thread ID for the breakpoint.\n\ | |
945 | If the value is a task ID (integer), then this is an Ada task-specific breakpoint.\n\ | |
946 | If the value is None, then this breakpoint is not task-specific.\n\ | |
947 | No other type of value can be used.", NULL }, | |
948 | { "ignore_count", bppy_get_ignore_count, bppy_set_ignore_count, | |
949 | "Number of times this breakpoint should be automatically continued.", | |
950 | NULL }, | |
951 | { "number", bppy_get_number, NULL, | |
952 | "Breakpoint's number assigned by GDB.", NULL }, | |
953 | { "hit_count", bppy_get_hit_count, bppy_set_hit_count, | |
954 | "Number of times the breakpoint has been hit.\n\ | |
955 | Can be set to zero to clear the count. No other value is valid\n\ | |
956 | when setting this property.", NULL }, | |
957 | { "location", bppy_get_location, NULL, | |
958 | "Location of the breakpoint, as specified by the user.", NULL}, | |
959 | { "expression", bppy_get_expression, NULL, | |
960 | "Expression of the breakpoint, as specified by the user.", NULL}, | |
961 | { "condition", bppy_get_condition, bppy_set_condition, | |
962 | "Condition of the breakpoint, as specified by the user,\ | |
963 | or None if no condition set."}, | |
964 | { "commands", bppy_get_commands, NULL, | |
965 | "Commands of the breakpoint, as specified by the user."}, | |
966 | { "type", bppy_get_type, NULL, | |
967 | "Type of breakpoint."}, | |
84f4c1fe PM |
968 | { "visible", bppy_get_visibility, NULL, |
969 | "Whether the breakpoint is visible to the user."}, | |
adc36818 PM |
970 | { NULL } /* Sentinel. */ |
971 | }; | |
972 | ||
973 | static PyMethodDef breakpoint_object_methods[] = | |
974 | { | |
975 | { "is_valid", bppy_is_valid, METH_NOARGS, | |
976 | "Return true if this breakpoint is valid, false if not." }, | |
94b6973e PM |
977 | { "delete", bppy_delete_breakpoint, METH_NOARGS, |
978 | "Delete the underlying GDB breakpoint." }, | |
adc36818 PM |
979 | { NULL } /* Sentinel. */ |
980 | }; | |
981 | ||
cc72b2a2 | 982 | PyTypeObject breakpoint_object_type = |
adc36818 PM |
983 | { |
984 | PyObject_HEAD_INIT (NULL) | |
985 | 0, /*ob_size*/ | |
986 | "gdb.Breakpoint", /*tp_name*/ | |
987 | sizeof (breakpoint_object), /*tp_basicsize*/ | |
988 | 0, /*tp_itemsize*/ | |
989 | 0, /*tp_dealloc*/ | |
990 | 0, /*tp_print*/ | |
991 | 0, /*tp_getattr*/ | |
992 | 0, /*tp_setattr*/ | |
993 | 0, /*tp_compare*/ | |
994 | 0, /*tp_repr*/ | |
995 | 0, /*tp_as_number*/ | |
996 | 0, /*tp_as_sequence*/ | |
997 | 0, /*tp_as_mapping*/ | |
998 | 0, /*tp_hash */ | |
999 | 0, /*tp_call*/ | |
1000 | 0, /*tp_str*/ | |
1001 | 0, /*tp_getattro*/ | |
7371cf6d | 1002 | (setattrofunc)local_setattro, /*tp_setattro */ |
adc36818 | 1003 | 0, /*tp_as_buffer*/ |
7371cf6d | 1004 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ |
adc36818 PM |
1005 | "GDB breakpoint object", /* tp_doc */ |
1006 | 0, /* tp_traverse */ | |
1007 | 0, /* tp_clear */ | |
1008 | 0, /* tp_richcompare */ | |
1009 | 0, /* tp_weaklistoffset */ | |
1010 | 0, /* tp_iter */ | |
1011 | 0, /* tp_iternext */ | |
1012 | breakpoint_object_methods, /* tp_methods */ | |
1013 | 0, /* tp_members */ | |
7371cf6d PM |
1014 | breakpoint_object_getset, /* tp_getset */ |
1015 | 0, /* tp_base */ | |
1016 | 0, /* tp_dict */ | |
1017 | 0, /* tp_descr_get */ | |
1018 | 0, /* tp_descr_set */ | |
1019 | 0, /* tp_dictoffset */ | |
1020 | bppy_init, /* tp_init */ | |
1021 | 0, /* tp_alloc */ | |
adc36818 | 1022 | }; |