Commit | Line | Data |
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595939de PM |
1 | /* Python interface to inferiors. |
2 | ||
61baf725 | 3 | Copyright (C) 2009-2017 Free Software Foundation, Inc. |
595939de 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" | |
595939de PM |
21 | #include "gdbcore.h" |
22 | #include "gdbthread.h" | |
23 | #include "inferior.h" | |
20c168b5 | 24 | #include "objfiles.h" |
595939de PM |
25 | #include "observer.h" |
26 | #include "python-internal.h" | |
27 | #include "arch-utils.h" | |
28 | #include "language.h" | |
505500db SW |
29 | #include "gdb_signals.h" |
30 | #include "py-event.h" | |
31 | #include "py-stopevent.h" | |
595939de PM |
32 | |
33 | struct threadlist_entry { | |
34 | thread_object *thread_obj; | |
35 | struct threadlist_entry *next; | |
36 | }; | |
37 | ||
38 | typedef struct | |
39 | { | |
40 | PyObject_HEAD | |
41 | ||
42 | /* The inferior we represent. */ | |
43 | struct inferior *inferior; | |
44 | ||
45 | /* thread_object instances under this inferior. This list owns a | |
46 | reference to each object it contains. */ | |
47 | struct threadlist_entry *threads; | |
48 | ||
49 | /* Number of threads in the list. */ | |
50 | int nthreads; | |
51 | } inferior_object; | |
52 | ||
e36122e9 | 53 | extern PyTypeObject inferior_object_type |
62eec1a5 | 54 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("inferior_object"); |
595939de PM |
55 | |
56 | static const struct inferior_data *infpy_inf_data_key; | |
57 | ||
58 | typedef struct { | |
59 | PyObject_HEAD | |
60 | void *buffer; | |
61 | ||
62 | /* These are kept just for mbpy_str. */ | |
63 | CORE_ADDR addr; | |
64 | CORE_ADDR length; | |
65 | } membuf_object; | |
66 | ||
e36122e9 | 67 | extern PyTypeObject membuf_object_type |
62eec1a5 | 68 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("membuf_object"); |
595939de PM |
69 | |
70 | /* Require that INFERIOR be a valid inferior ID. */ | |
71 | #define INFPY_REQUIRE_VALID(Inferior) \ | |
72 | do { \ | |
73 | if (!Inferior->inferior) \ | |
74 | { \ | |
75 | PyErr_SetString (PyExc_RuntimeError, \ | |
76 | _("Inferior no longer exists.")); \ | |
77 | return NULL; \ | |
78 | } \ | |
79 | } while (0) | |
80 | ||
505500db SW |
81 | static void |
82 | python_on_normal_stop (struct bpstats *bs, int print_frame) | |
83 | { | |
2ea28649 | 84 | enum gdb_signal stop_signal; |
505500db | 85 | |
0646da15 TT |
86 | if (!gdb_python_initialized) |
87 | return; | |
88 | ||
505500db SW |
89 | if (!find_thread_ptid (inferior_ptid)) |
90 | return; | |
91 | ||
92 | stop_signal = inferior_thread ()->suspend.stop_signal; | |
93 | ||
07bc7329 | 94 | gdbpy_enter enter_py (get_current_arch (), current_language); |
505500db SW |
95 | |
96 | if (emit_stop_event (bs, stop_signal) < 0) | |
97 | gdbpy_print_stack (); | |
505500db SW |
98 | } |
99 | ||
100 | static void | |
101 | python_on_resume (ptid_t ptid) | |
102 | { | |
0646da15 TT |
103 | if (!gdb_python_initialized) |
104 | return; | |
105 | ||
07bc7329 | 106 | gdbpy_enter enter_py (target_gdbarch (), current_language); |
505500db SW |
107 | |
108 | if (emit_continue_event (ptid) < 0) | |
109 | gdbpy_print_stack (); | |
505500db SW |
110 | } |
111 | ||
162078c8 NB |
112 | /* Callback, registered as an observer, that notifies Python listeners |
113 | when an inferior function call is about to be made. */ | |
114 | ||
115 | static void | |
116 | python_on_inferior_call_pre (ptid_t thread, CORE_ADDR address) | |
117 | { | |
07bc7329 | 118 | gdbpy_enter enter_py (target_gdbarch (), current_language); |
162078c8 NB |
119 | |
120 | if (emit_inferior_call_event (INFERIOR_CALL_PRE, thread, address) < 0) | |
121 | gdbpy_print_stack (); | |
162078c8 NB |
122 | } |
123 | ||
124 | /* Callback, registered as an observer, that notifies Python listeners | |
125 | when an inferior function call has completed. */ | |
126 | ||
127 | static void | |
128 | python_on_inferior_call_post (ptid_t thread, CORE_ADDR address) | |
129 | { | |
07bc7329 | 130 | gdbpy_enter enter_py (target_gdbarch (), current_language); |
162078c8 NB |
131 | |
132 | if (emit_inferior_call_event (INFERIOR_CALL_POST, thread, address) < 0) | |
133 | gdbpy_print_stack (); | |
162078c8 NB |
134 | } |
135 | ||
136 | /* Callback, registered as an observer, that notifies Python listeners | |
137 | when a part of memory has been modified by user action (eg via a | |
138 | 'set' command). */ | |
139 | ||
140 | static void | |
141 | python_on_memory_change (struct inferior *inferior, CORE_ADDR addr, ssize_t len, const bfd_byte *data) | |
142 | { | |
07bc7329 | 143 | gdbpy_enter enter_py (target_gdbarch (), current_language); |
162078c8 NB |
144 | |
145 | if (emit_memory_changed_event (addr, len) < 0) | |
146 | gdbpy_print_stack (); | |
162078c8 NB |
147 | } |
148 | ||
149 | /* Callback, registered as an observer, that notifies Python listeners | |
150 | when a register has been modified by user action (eg via a 'set' | |
151 | command). */ | |
152 | ||
153 | static void | |
154 | python_on_register_change (struct frame_info *frame, int regnum) | |
155 | { | |
07bc7329 | 156 | gdbpy_enter enter_py (target_gdbarch (), current_language); |
162078c8 NB |
157 | |
158 | if (emit_register_changed_event (frame, regnum) < 0) | |
159 | gdbpy_print_stack (); | |
162078c8 NB |
160 | } |
161 | ||
505500db SW |
162 | static void |
163 | python_inferior_exit (struct inferior *inf) | |
164 | { | |
8cf64490 | 165 | const LONGEST *exit_code = NULL; |
505500db | 166 | |
0646da15 TT |
167 | if (!gdb_python_initialized) |
168 | return; | |
169 | ||
07bc7329 | 170 | gdbpy_enter enter_py (target_gdbarch (), current_language); |
505500db | 171 | |
8cf64490 TT |
172 | if (inf->has_exit_code) |
173 | exit_code = &inf->exit_code; | |
505500db | 174 | |
cb6be26b | 175 | if (emit_exited_event (exit_code, inf) < 0) |
505500db | 176 | gdbpy_print_stack (); |
505500db SW |
177 | } |
178 | ||
20c168b5 | 179 | /* Callback used to notify Python listeners about new objfiles loaded in the |
4ffbba72 DE |
180 | inferior. OBJFILE may be NULL which means that the objfile list has been |
181 | cleared (emptied). */ | |
20c168b5 KP |
182 | |
183 | static void | |
184 | python_new_objfile (struct objfile *objfile) | |
185 | { | |
0646da15 TT |
186 | if (!gdb_python_initialized) |
187 | return; | |
188 | ||
07bc7329 TT |
189 | gdbpy_enter enter_py (objfile != NULL |
190 | ? get_objfile_arch (objfile) | |
191 | : target_gdbarch (), | |
192 | current_language); | |
20c168b5 | 193 | |
4ffbba72 DE |
194 | if (objfile == NULL) |
195 | { | |
196 | if (emit_clear_objfiles_event () < 0) | |
197 | gdbpy_print_stack (); | |
198 | } | |
199 | else | |
200 | { | |
201 | if (emit_new_objfile_event (objfile) < 0) | |
202 | gdbpy_print_stack (); | |
203 | } | |
20c168b5 KP |
204 | } |
205 | ||
754eadd1 | 206 | /* Return a reference to the Python object of type Inferior |
595939de | 207 | representing INFERIOR. If the object has already been created, |
754eadd1 PM |
208 | return it and increment the reference count, otherwise, create it. |
209 | Return NULL on failure. */ | |
595939de PM |
210 | PyObject * |
211 | inferior_to_inferior_object (struct inferior *inferior) | |
212 | { | |
213 | inferior_object *inf_obj; | |
214 | ||
19ba03f4 | 215 | inf_obj = (inferior_object *) inferior_data (inferior, infpy_inf_data_key); |
595939de PM |
216 | if (!inf_obj) |
217 | { | |
595939de PM |
218 | inf_obj = PyObject_New (inferior_object, &inferior_object_type); |
219 | if (!inf_obj) | |
595939de | 220 | return NULL; |
595939de PM |
221 | |
222 | inf_obj->inferior = inferior; | |
223 | inf_obj->threads = NULL; | |
224 | inf_obj->nthreads = 0; | |
225 | ||
72bc1d24 SM |
226 | /* PyObject_New initializes the new object with a refcount of 1. This |
227 | counts for the reference we are keeping in the inferior data. */ | |
595939de PM |
228 | set_inferior_data (inferior, infpy_inf_data_key, inf_obj); |
229 | ||
595939de | 230 | } |
72bc1d24 SM |
231 | |
232 | /* We are returning a new reference. */ | |
233 | Py_INCREF ((PyObject *)inf_obj); | |
595939de PM |
234 | |
235 | return (PyObject *) inf_obj; | |
236 | } | |
237 | ||
238 | /* Finds the Python Inferior object for the given PID. Returns a | |
754eadd1 | 239 | reference, or NULL if PID does not match any inferior object. */ |
505500db | 240 | |
595939de PM |
241 | PyObject * |
242 | find_inferior_object (int pid) | |
243 | { | |
595939de PM |
244 | struct inferior *inf = find_inferior_pid (pid); |
245 | ||
246 | if (inf) | |
247 | return inferior_to_inferior_object (inf); | |
248 | ||
249 | return NULL; | |
250 | } | |
251 | ||
252 | thread_object * | |
253 | find_thread_object (ptid_t ptid) | |
254 | { | |
255 | int pid; | |
256 | struct threadlist_entry *thread; | |
595939de | 257 | |
dfd4cc63 | 258 | pid = ptid_get_pid (ptid); |
ea976c60 PM |
259 | if (pid == 0) |
260 | return NULL; | |
261 | ||
7780f186 | 262 | gdbpy_ref<> inf_obj (find_inferior_object (pid)); |
9205649a | 263 | if (inf_obj == NULL) |
754eadd1 PM |
264 | return NULL; |
265 | ||
9205649a | 266 | for (thread = ((inferior_object *)(inf_obj.get ()))->threads; thread; |
754eadd1 PM |
267 | thread = thread->next) |
268 | if (ptid_equal (thread->thread_obj->thread->ptid, ptid)) | |
60685cd0 | 269 | return thread->thread_obj; |
595939de PM |
270 | |
271 | return NULL; | |
272 | } | |
273 | ||
274 | static void | |
275 | add_thread_object (struct thread_info *tp) | |
276 | { | |
595939de PM |
277 | thread_object *thread_obj; |
278 | inferior_object *inf_obj; | |
279 | struct threadlist_entry *entry; | |
280 | ||
0646da15 TT |
281 | if (!gdb_python_initialized) |
282 | return; | |
283 | ||
07bc7329 | 284 | gdbpy_enter enter_py (python_gdbarch, python_language); |
595939de PM |
285 | |
286 | thread_obj = create_thread_object (tp); | |
287 | if (!thread_obj) | |
288 | { | |
289 | gdbpy_print_stack (); | |
595939de PM |
290 | return; |
291 | } | |
292 | ||
293 | inf_obj = (inferior_object *) thread_obj->inf_obj; | |
294 | ||
8d749320 | 295 | entry = XNEW (struct threadlist_entry); |
595939de PM |
296 | entry->thread_obj = thread_obj; |
297 | entry->next = inf_obj->threads; | |
298 | ||
299 | inf_obj->threads = entry; | |
300 | inf_obj->nthreads++; | |
595939de PM |
301 | } |
302 | ||
303 | static void | |
304 | delete_thread_object (struct thread_info *tp, int ignore) | |
305 | { | |
595939de | 306 | struct threadlist_entry **entry, *tmp; |
256458bc | 307 | |
0646da15 TT |
308 | if (!gdb_python_initialized) |
309 | return; | |
310 | ||
07bc7329 | 311 | gdbpy_enter enter_py (python_gdbarch, python_language); |
595939de | 312 | |
88b6faea TT |
313 | gdbpy_ref<inferior_object> inf_obj |
314 | ((inferior_object *) find_inferior_object (ptid_get_pid (tp->ptid))); | |
315 | if (inf_obj == NULL) | |
07bc7329 | 316 | return; |
595939de PM |
317 | |
318 | /* Find thread entry in its inferior's thread_list. */ | |
319 | for (entry = &inf_obj->threads; *entry != NULL; entry = | |
320 | &(*entry)->next) | |
321 | if ((*entry)->thread_obj->thread == tp) | |
322 | break; | |
323 | ||
324 | if (!*entry) | |
88b6faea | 325 | return; |
595939de | 326 | |
595939de PM |
327 | tmp = *entry; |
328 | tmp->thread_obj->thread = NULL; | |
329 | ||
330 | *entry = (*entry)->next; | |
331 | inf_obj->nthreads--; | |
332 | ||
333 | Py_DECREF (tmp->thread_obj); | |
334 | xfree (tmp); | |
595939de PM |
335 | } |
336 | ||
337 | static PyObject * | |
338 | infpy_threads (PyObject *self, PyObject *args) | |
339 | { | |
340 | int i; | |
341 | struct threadlist_entry *entry; | |
342 | inferior_object *inf_obj = (inferior_object *) self; | |
343 | PyObject *tuple; | |
344 | ||
345 | INFPY_REQUIRE_VALID (inf_obj); | |
346 | ||
492d29ea PA |
347 | TRY |
348 | { | |
349 | update_thread_list (); | |
350 | } | |
351 | CATCH (except, RETURN_MASK_ALL) | |
352 | { | |
353 | GDB_PY_HANDLE_EXCEPTION (except); | |
354 | } | |
355 | END_CATCH | |
f66713d2 | 356 | |
595939de PM |
357 | tuple = PyTuple_New (inf_obj->nthreads); |
358 | if (!tuple) | |
359 | return NULL; | |
360 | ||
361 | for (i = 0, entry = inf_obj->threads; i < inf_obj->nthreads; | |
362 | i++, entry = entry->next) | |
363 | { | |
364 | Py_INCREF (entry->thread_obj); | |
365 | PyTuple_SET_ITEM (tuple, i, (PyObject *) entry->thread_obj); | |
366 | } | |
367 | ||
368 | return tuple; | |
369 | } | |
370 | ||
371 | static PyObject * | |
372 | infpy_get_num (PyObject *self, void *closure) | |
373 | { | |
374 | inferior_object *inf = (inferior_object *) self; | |
375 | ||
376 | INFPY_REQUIRE_VALID (inf); | |
377 | ||
378 | return PyLong_FromLong (inf->inferior->num); | |
379 | } | |
380 | ||
381 | static PyObject * | |
382 | infpy_get_pid (PyObject *self, void *closure) | |
383 | { | |
384 | inferior_object *inf = (inferior_object *) self; | |
385 | ||
386 | INFPY_REQUIRE_VALID (inf); | |
387 | ||
388 | return PyLong_FromLong (inf->inferior->pid); | |
389 | } | |
390 | ||
391 | static PyObject * | |
392 | infpy_get_was_attached (PyObject *self, void *closure) | |
393 | { | |
394 | inferior_object *inf = (inferior_object *) self; | |
395 | ||
396 | INFPY_REQUIRE_VALID (inf); | |
397 | if (inf->inferior->attach_flag) | |
398 | Py_RETURN_TRUE; | |
399 | Py_RETURN_FALSE; | |
400 | } | |
401 | ||
402 | static int | |
403 | build_inferior_list (struct inferior *inf, void *arg) | |
404 | { | |
19ba03f4 | 405 | PyObject *list = (PyObject *) arg; |
7780f186 | 406 | gdbpy_ref<> inferior (inferior_to_inferior_object (inf)); |
754eadd1 | 407 | |
9205649a | 408 | if (inferior == NULL) |
754eadd1 PM |
409 | return 0; |
410 | ||
9205649a | 411 | return PyList_Append (list, inferior.get ()) ? 1 : 0; |
595939de PM |
412 | } |
413 | ||
414 | /* Implementation of gdb.inferiors () -> (gdb.Inferior, ...). | |
415 | Returns a tuple of all inferiors. */ | |
416 | PyObject * | |
417 | gdbpy_inferiors (PyObject *unused, PyObject *unused2) | |
418 | { | |
7780f186 | 419 | gdbpy_ref<> list (PyList_New (0)); |
f59fe7f8 | 420 | if (list == NULL) |
595939de PM |
421 | return NULL; |
422 | ||
f59fe7f8 TT |
423 | if (iterate_over_inferiors (build_inferior_list, list.get ())) |
424 | return NULL; | |
27ca1a5b | 425 | |
f59fe7f8 | 426 | return PyList_AsTuple (list.get ()); |
595939de PM |
427 | } |
428 | ||
429 | /* Membuf and memory manipulation. */ | |
430 | ||
2678e2af | 431 | /* Implementation of Inferior.read_memory (address, length). |
595939de | 432 | Returns a Python buffer object with LENGTH bytes of the inferior's |
8dc78533 JK |
433 | memory at ADDRESS. Both arguments are integers. Returns NULL on error, |
434 | with a python exception set. */ | |
595939de PM |
435 | static PyObject * |
436 | infpy_read_memory (PyObject *self, PyObject *args, PyObject *kw) | |
437 | { | |
595939de | 438 | CORE_ADDR addr, length; |
7c543f7b | 439 | gdb_byte *buffer = NULL; |
cc0265cd | 440 | PyObject *addr_obj, *length_obj, *result; |
2adadf51 | 441 | static const char *keywords[] = { "address", "length", NULL }; |
595939de | 442 | |
2adadf51 PA |
443 | if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "OO", keywords, |
444 | &addr_obj, &length_obj)) | |
595939de PM |
445 | return NULL; |
446 | ||
b86af38a TT |
447 | if (get_addr_from_python (addr_obj, &addr) < 0 |
448 | || get_addr_from_python (length_obj, &length) < 0) | |
449 | return NULL; | |
450 | ||
492d29ea | 451 | TRY |
595939de | 452 | { |
7c543f7b | 453 | buffer = (gdb_byte *) xmalloc (length); |
595939de PM |
454 | |
455 | read_memory (addr, buffer, length); | |
456 | } | |
492d29ea | 457 | CATCH (except, RETURN_MASK_ALL) |
595939de | 458 | { |
cc0265cd | 459 | xfree (buffer); |
595939de PM |
460 | GDB_PY_HANDLE_EXCEPTION (except); |
461 | } | |
492d29ea | 462 | END_CATCH |
595939de | 463 | |
88b6faea TT |
464 | gdbpy_ref<membuf_object> membuf_obj (PyObject_New (membuf_object, |
465 | &membuf_object_type)); | |
595939de PM |
466 | if (membuf_obj == NULL) |
467 | { | |
cc0265cd | 468 | xfree (buffer); |
595939de PM |
469 | return NULL; |
470 | } | |
471 | ||
595939de PM |
472 | membuf_obj->buffer = buffer; |
473 | membuf_obj->addr = addr; | |
474 | membuf_obj->length = length; | |
475 | ||
9a27f2c6 | 476 | #ifdef IS_PY3K |
88b6faea | 477 | result = PyMemoryView_FromObject ((PyObject *) membuf_obj.get ()); |
9a27f2c6 | 478 | #else |
88b6faea | 479 | result = PyBuffer_FromReadWriteObject ((PyObject *) membuf_obj.get (), 0, |
cc0265cd | 480 | Py_END_OF_BUFFER); |
9a27f2c6 | 481 | #endif |
9a27f2c6 | 482 | |
cc0265cd | 483 | return result; |
595939de PM |
484 | } |
485 | ||
2678e2af | 486 | /* Implementation of Inferior.write_memory (address, buffer [, length]). |
595939de PM |
487 | Writes the contents of BUFFER (a Python object supporting the read |
488 | buffer protocol) at ADDRESS in the inferior's memory. Write LENGTH | |
489 | bytes from BUFFER, or its entire contents if the argument is not | |
8dc78533 JK |
490 | provided. The function returns nothing. Returns NULL on error, with |
491 | a python exception set. */ | |
595939de PM |
492 | static PyObject * |
493 | infpy_write_memory (PyObject *self, PyObject *args, PyObject *kw) | |
494 | { | |
492d29ea | 495 | struct gdb_exception except = exception_none; |
ddd49eee | 496 | Py_ssize_t buf_len; |
7c543f7b | 497 | const gdb_byte *buffer; |
595939de PM |
498 | CORE_ADDR addr, length; |
499 | PyObject *addr_obj, *length_obj = NULL; | |
2adadf51 | 500 | static const char *keywords[] = { "address", "buffer", "length", NULL }; |
9a27f2c6 PK |
501 | #ifdef IS_PY3K |
502 | Py_buffer pybuf; | |
595939de | 503 | |
2adadf51 PA |
504 | if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "Os*|O", keywords, |
505 | &addr_obj, &pybuf, &length_obj)) | |
9a27f2c6 | 506 | return NULL; |
595939de | 507 | |
7c543f7b | 508 | buffer = (const gdb_byte *) pybuf.buf; |
9a27f2c6 PK |
509 | buf_len = pybuf.len; |
510 | #else | |
2adadf51 PA |
511 | if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "Os#|O", keywords, |
512 | &addr_obj, &buffer, &buf_len, | |
513 | &length_obj)) | |
595939de | 514 | return NULL; |
7c543f7b SM |
515 | |
516 | buffer = (const gdb_byte *) buffer; | |
9a27f2c6 | 517 | #endif |
595939de | 518 | |
b86af38a TT |
519 | if (get_addr_from_python (addr_obj, &addr) < 0) |
520 | goto fail; | |
521 | ||
522 | if (!length_obj) | |
523 | length = buf_len; | |
524 | else if (get_addr_from_python (length_obj, &length) < 0) | |
525 | goto fail; | |
526 | ||
492d29ea | 527 | TRY |
595939de | 528 | { |
7c543f7b | 529 | write_memory_with_notification (addr, buffer, length); |
595939de | 530 | } |
492d29ea PA |
531 | CATCH (ex, RETURN_MASK_ALL) |
532 | { | |
533 | except = ex; | |
534 | } | |
535 | END_CATCH | |
536 | ||
9a27f2c6 PK |
537 | #ifdef IS_PY3K |
538 | PyBuffer_Release (&pybuf); | |
539 | #endif | |
595939de PM |
540 | GDB_PY_HANDLE_EXCEPTION (except); |
541 | ||
595939de | 542 | Py_RETURN_NONE; |
b86af38a TT |
543 | |
544 | fail: | |
545 | #ifdef IS_PY3K | |
546 | PyBuffer_Release (&pybuf); | |
547 | #endif | |
548 | return NULL; | |
595939de PM |
549 | } |
550 | ||
551 | /* Destructor of Membuf objects. */ | |
552 | static void | |
553 | mbpy_dealloc (PyObject *self) | |
554 | { | |
555 | xfree (((membuf_object *) self)->buffer); | |
9a27f2c6 | 556 | Py_TYPE (self)->tp_free (self); |
595939de PM |
557 | } |
558 | ||
559 | /* Return a description of the Membuf object. */ | |
560 | static PyObject * | |
561 | mbpy_str (PyObject *self) | |
562 | { | |
563 | membuf_object *membuf_obj = (membuf_object *) self; | |
564 | ||
565 | return PyString_FromFormat (_("Memory buffer for address %s, \ | |
566 | which is %s bytes long."), | |
567 | paddress (python_gdbarch, membuf_obj->addr), | |
568 | pulongest (membuf_obj->length)); | |
569 | } | |
570 | ||
9a27f2c6 PK |
571 | #ifdef IS_PY3K |
572 | ||
573 | static int | |
574 | get_buffer (PyObject *self, Py_buffer *buf, int flags) | |
575 | { | |
576 | membuf_object *membuf_obj = (membuf_object *) self; | |
577 | int ret; | |
256458bc | 578 | |
9a27f2c6 | 579 | ret = PyBuffer_FillInfo (buf, self, membuf_obj->buffer, |
256458bc | 580 | membuf_obj->length, 0, |
9a27f2c6 | 581 | PyBUF_CONTIG); |
a121b7c1 PA |
582 | |
583 | /* Despite the documentation saying this field is a "const char *", | |
584 | in Python 3.4 at least, it's really a "char *". */ | |
585 | buf->format = (char *) "c"; | |
9a27f2c6 PK |
586 | |
587 | return ret; | |
588 | } | |
589 | ||
590 | #else | |
591 | ||
595939de PM |
592 | static Py_ssize_t |
593 | get_read_buffer (PyObject *self, Py_ssize_t segment, void **ptrptr) | |
594 | { | |
595 | membuf_object *membuf_obj = (membuf_object *) self; | |
596 | ||
597 | if (segment) | |
598 | { | |
599 | PyErr_SetString (PyExc_SystemError, | |
600 | _("The memory buffer supports only one segment.")); | |
601 | return -1; | |
602 | } | |
603 | ||
604 | *ptrptr = membuf_obj->buffer; | |
605 | ||
606 | return membuf_obj->length; | |
607 | } | |
608 | ||
609 | static Py_ssize_t | |
610 | get_write_buffer (PyObject *self, Py_ssize_t segment, void **ptrptr) | |
611 | { | |
612 | return get_read_buffer (self, segment, ptrptr); | |
613 | } | |
614 | ||
615 | static Py_ssize_t | |
616 | get_seg_count (PyObject *self, Py_ssize_t *lenp) | |
617 | { | |
618 | if (lenp) | |
619 | *lenp = ((membuf_object *) self)->length; | |
620 | ||
621 | return 1; | |
622 | } | |
623 | ||
624 | static Py_ssize_t | |
625 | get_char_buffer (PyObject *self, Py_ssize_t segment, char **ptrptr) | |
626 | { | |
627 | void *ptr = NULL; | |
628 | Py_ssize_t ret; | |
629 | ||
630 | ret = get_read_buffer (self, segment, &ptr); | |
631 | *ptrptr = (char *) ptr; | |
632 | ||
633 | return ret; | |
634 | } | |
635 | ||
9a27f2c6 PK |
636 | #endif /* IS_PY3K */ |
637 | ||
595939de PM |
638 | /* Implementation of |
639 | gdb.search_memory (address, length, pattern). ADDRESS is the | |
640 | address to start the search. LENGTH specifies the scope of the | |
641 | search from ADDRESS. PATTERN is the pattern to search for (and | |
642 | must be a Python object supporting the buffer protocol). | |
643 | Returns a Python Long object holding the address where the pattern | |
8dc78533 JK |
644 | was located, or if the pattern was not found, returns None. Returns NULL |
645 | on error, with a python exception set. */ | |
595939de PM |
646 | static PyObject * |
647 | infpy_search_memory (PyObject *self, PyObject *args, PyObject *kw) | |
648 | { | |
492d29ea | 649 | struct gdb_exception except = exception_none; |
595939de | 650 | CORE_ADDR start_addr, length; |
2adadf51 | 651 | static const char *keywords[] = { "address", "length", "pattern", NULL }; |
9a27f2c6 | 652 | PyObject *start_addr_obj, *length_obj; |
595939de | 653 | Py_ssize_t pattern_size; |
7c543f7b | 654 | const gdb_byte *buffer; |
595939de PM |
655 | CORE_ADDR found_addr; |
656 | int found = 0; | |
9a27f2c6 PK |
657 | #ifdef IS_PY3K |
658 | Py_buffer pybuf; | |
595939de | 659 | |
2adadf51 PA |
660 | if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "OOs*", keywords, |
661 | &start_addr_obj, &length_obj, | |
662 | &pybuf)) | |
9a27f2c6 PK |
663 | return NULL; |
664 | ||
7c543f7b | 665 | buffer = (const gdb_byte *) pybuf.buf; |
9a27f2c6 PK |
666 | pattern_size = pybuf.len; |
667 | #else | |
668 | PyObject *pattern; | |
7c543f7b | 669 | const void *vbuffer; |
256458bc | 670 | |
2adadf51 PA |
671 | if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "OOO", keywords, |
672 | &start_addr_obj, &length_obj, | |
673 | &pattern)) | |
9a27f2c6 PK |
674 | return NULL; |
675 | ||
676 | if (!PyObject_CheckReadBuffer (pattern)) | |
677 | { | |
678 | PyErr_SetString (PyExc_RuntimeError, | |
679 | _("The pattern is not a Python buffer.")); | |
680 | ||
681 | return NULL; | |
682 | } | |
683 | ||
7c543f7b | 684 | if (PyObject_AsReadBuffer (pattern, &vbuffer, &pattern_size) == -1) |
595939de | 685 | return NULL; |
7c543f7b SM |
686 | |
687 | buffer = (const gdb_byte *) vbuffer; | |
9a27f2c6 | 688 | #endif |
595939de | 689 | |
b86af38a TT |
690 | if (get_addr_from_python (start_addr_obj, &start_addr) < 0) |
691 | goto fail; | |
256458bc | 692 | |
b86af38a TT |
693 | if (get_addr_from_python (length_obj, &length) < 0) |
694 | goto fail; | |
9a27f2c6 | 695 | |
b86af38a TT |
696 | if (!length) |
697 | { | |
698 | PyErr_SetString (PyExc_ValueError, | |
699 | _("Search range is empty.")); | |
700 | goto fail; | |
701 | } | |
702 | /* Watch for overflows. */ | |
703 | else if (length > CORE_ADDR_MAX | |
704 | || (start_addr + length - 1) < start_addr) | |
705 | { | |
706 | PyErr_SetString (PyExc_ValueError, | |
707 | _("The search range is too large.")); | |
708 | goto fail; | |
595939de | 709 | } |
595939de | 710 | |
492d29ea | 711 | TRY |
595939de PM |
712 | { |
713 | found = target_search_memory (start_addr, length, | |
714 | buffer, pattern_size, | |
715 | &found_addr); | |
716 | } | |
492d29ea PA |
717 | CATCH (ex, RETURN_MASK_ALL) |
718 | { | |
719 | except = ex; | |
720 | } | |
721 | END_CATCH | |
722 | ||
9a27f2c6 PK |
723 | #ifdef IS_PY3K |
724 | PyBuffer_Release (&pybuf); | |
725 | #endif | |
b86af38a | 726 | GDB_PY_HANDLE_EXCEPTION (except); |
9a27f2c6 | 727 | |
595939de PM |
728 | if (found) |
729 | return PyLong_FromLong (found_addr); | |
730 | else | |
731 | Py_RETURN_NONE; | |
b86af38a TT |
732 | |
733 | fail: | |
734 | #ifdef IS_PY3K | |
735 | PyBuffer_Release (&pybuf); | |
736 | #endif | |
737 | return NULL; | |
595939de PM |
738 | } |
739 | ||
29703da4 PM |
740 | /* Implementation of gdb.Inferior.is_valid (self) -> Boolean. |
741 | Returns True if this inferior object still exists in GDB. */ | |
742 | ||
743 | static PyObject * | |
744 | infpy_is_valid (PyObject *self, PyObject *args) | |
745 | { | |
746 | inferior_object *inf = (inferior_object *) self; | |
747 | ||
748 | if (! inf->inferior) | |
749 | Py_RETURN_FALSE; | |
750 | ||
751 | Py_RETURN_TRUE; | |
752 | } | |
753 | ||
754eadd1 PM |
754 | static void |
755 | infpy_dealloc (PyObject *obj) | |
756 | { | |
757 | inferior_object *inf_obj = (inferior_object *) obj; | |
758 | struct inferior *inf = inf_obj->inferior; | |
759 | ||
760 | if (! inf) | |
761 | return; | |
762 | ||
763 | set_inferior_data (inf, infpy_inf_data_key, NULL); | |
764 | } | |
595939de PM |
765 | |
766 | /* Clear the INFERIOR pointer in an Inferior object and clear the | |
767 | thread list. */ | |
768 | static void | |
769 | py_free_inferior (struct inferior *inf, void *datum) | |
770 | { | |
88b6faea | 771 | gdbpy_ref<inferior_object> inf_obj ((inferior_object *) datum); |
595939de PM |
772 | struct threadlist_entry *th_entry, *th_tmp; |
773 | ||
0646da15 TT |
774 | if (!gdb_python_initialized) |
775 | return; | |
776 | ||
07bc7329 | 777 | gdbpy_enter enter_py (python_gdbarch, python_language); |
595939de PM |
778 | |
779 | inf_obj->inferior = NULL; | |
780 | ||
781 | /* Deallocate threads list. */ | |
782 | for (th_entry = inf_obj->threads; th_entry != NULL;) | |
783 | { | |
784 | Py_DECREF (th_entry->thread_obj); | |
785 | ||
786 | th_tmp = th_entry; | |
787 | th_entry = th_entry->next; | |
788 | xfree (th_tmp); | |
789 | } | |
790 | ||
791 | inf_obj->nthreads = 0; | |
595939de PM |
792 | } |
793 | ||
2aa48337 KP |
794 | /* Implementation of gdb.selected_inferior() -> gdb.Inferior. |
795 | Returns the current inferior object. */ | |
796 | ||
797 | PyObject * | |
798 | gdbpy_selected_inferior (PyObject *self, PyObject *args) | |
799 | { | |
2d57700b | 800 | return inferior_to_inferior_object (current_inferior ()); |
2aa48337 KP |
801 | } |
802 | ||
999633ed | 803 | int |
595939de PM |
804 | gdbpy_initialize_inferior (void) |
805 | { | |
806 | if (PyType_Ready (&inferior_object_type) < 0) | |
999633ed | 807 | return -1; |
595939de | 808 | |
aa36459a TT |
809 | if (gdb_pymodule_addobject (gdb_module, "Inferior", |
810 | (PyObject *) &inferior_object_type) < 0) | |
999633ed | 811 | return -1; |
595939de PM |
812 | |
813 | infpy_inf_data_key = | |
8e260fc0 | 814 | register_inferior_data_with_cleanup (NULL, py_free_inferior); |
595939de PM |
815 | |
816 | observer_attach_new_thread (add_thread_object); | |
817 | observer_attach_thread_exit (delete_thread_object); | |
505500db SW |
818 | observer_attach_normal_stop (python_on_normal_stop); |
819 | observer_attach_target_resumed (python_on_resume); | |
162078c8 NB |
820 | observer_attach_inferior_call_pre (python_on_inferior_call_pre); |
821 | observer_attach_inferior_call_post (python_on_inferior_call_post); | |
822 | observer_attach_memory_changed (python_on_memory_change); | |
823 | observer_attach_register_changed (python_on_register_change); | |
505500db | 824 | observer_attach_inferior_exit (python_inferior_exit); |
20c168b5 | 825 | observer_attach_new_objfile (python_new_objfile); |
595939de | 826 | |
6a1b1664 | 827 | membuf_object_type.tp_new = PyType_GenericNew; |
595939de | 828 | if (PyType_Ready (&membuf_object_type) < 0) |
999633ed | 829 | return -1; |
595939de | 830 | |
aa36459a TT |
831 | return gdb_pymodule_addobject (gdb_module, "Membuf", (PyObject *) |
832 | &membuf_object_type); | |
595939de PM |
833 | } |
834 | ||
0d1f4ceb | 835 | static gdb_PyGetSetDef inferior_object_getset[] = |
595939de PM |
836 | { |
837 | { "num", infpy_get_num, NULL, "ID of inferior, as assigned by GDB.", NULL }, | |
838 | { "pid", infpy_get_pid, NULL, "PID of inferior, as assigned by the OS.", | |
839 | NULL }, | |
840 | { "was_attached", infpy_get_was_attached, NULL, | |
841 | "True if the inferior was created using 'attach'.", NULL }, | |
842 | { NULL } | |
843 | }; | |
844 | ||
845 | static PyMethodDef inferior_object_methods[] = | |
846 | { | |
29703da4 PM |
847 | { "is_valid", infpy_is_valid, METH_NOARGS, |
848 | "is_valid () -> Boolean.\n\ | |
849 | Return true if this inferior is valid, false if not." }, | |
595939de PM |
850 | { "threads", infpy_threads, METH_NOARGS, |
851 | "Return all the threads of this inferior." }, | |
852 | { "read_memory", (PyCFunction) infpy_read_memory, | |
853 | METH_VARARGS | METH_KEYWORDS, | |
854 | "read_memory (address, length) -> buffer\n\ | |
855 | Return a buffer object for reading from the inferior's memory." }, | |
856 | { "write_memory", (PyCFunction) infpy_write_memory, | |
857 | METH_VARARGS | METH_KEYWORDS, | |
858 | "write_memory (address, buffer [, length])\n\ | |
859 | Write the given buffer object to the inferior's memory." }, | |
860 | { "search_memory", (PyCFunction) infpy_search_memory, | |
861 | METH_VARARGS | METH_KEYWORDS, | |
862 | "search_memory (address, length, pattern) -> long\n\ | |
863 | Return a long with the address of a match, or None." }, | |
864 | { NULL } | |
865 | }; | |
866 | ||
e36122e9 | 867 | PyTypeObject inferior_object_type = |
595939de | 868 | { |
9a27f2c6 | 869 | PyVarObject_HEAD_INIT (NULL, 0) |
595939de PM |
870 | "gdb.Inferior", /* tp_name */ |
871 | sizeof (inferior_object), /* tp_basicsize */ | |
872 | 0, /* tp_itemsize */ | |
754eadd1 | 873 | infpy_dealloc, /* tp_dealloc */ |
595939de PM |
874 | 0, /* tp_print */ |
875 | 0, /* tp_getattr */ | |
876 | 0, /* tp_setattr */ | |
877 | 0, /* tp_compare */ | |
878 | 0, /* tp_repr */ | |
879 | 0, /* tp_as_number */ | |
880 | 0, /* tp_as_sequence */ | |
881 | 0, /* tp_as_mapping */ | |
882 | 0, /* tp_hash */ | |
883 | 0, /* tp_call */ | |
884 | 0, /* tp_str */ | |
885 | 0, /* tp_getattro */ | |
886 | 0, /* tp_setattro */ | |
887 | 0, /* tp_as_buffer */ | |
888 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /* tp_flags */ | |
889 | "GDB inferior object", /* tp_doc */ | |
890 | 0, /* tp_traverse */ | |
891 | 0, /* tp_clear */ | |
892 | 0, /* tp_richcompare */ | |
893 | 0, /* tp_weaklistoffset */ | |
894 | 0, /* tp_iter */ | |
895 | 0, /* tp_iternext */ | |
896 | inferior_object_methods, /* tp_methods */ | |
897 | 0, /* tp_members */ | |
898 | inferior_object_getset, /* tp_getset */ | |
899 | 0, /* tp_base */ | |
900 | 0, /* tp_dict */ | |
901 | 0, /* tp_descr_get */ | |
902 | 0, /* tp_descr_set */ | |
903 | 0, /* tp_dictoffset */ | |
904 | 0, /* tp_init */ | |
905 | 0 /* tp_alloc */ | |
906 | }; | |
907 | ||
9a27f2c6 PK |
908 | #ifdef IS_PY3K |
909 | ||
910 | static PyBufferProcs buffer_procs = | |
911 | { | |
912 | get_buffer | |
913 | }; | |
914 | ||
915 | #else | |
916 | ||
595939de PM |
917 | /* Python doesn't provide a decent way to get compatibility here. */ |
918 | #if HAVE_LIBPYTHON2_4 | |
919 | #define CHARBUFFERPROC_NAME getcharbufferproc | |
920 | #else | |
921 | #define CHARBUFFERPROC_NAME charbufferproc | |
922 | #endif | |
923 | ||
924 | static PyBufferProcs buffer_procs = { | |
925 | get_read_buffer, | |
926 | get_write_buffer, | |
927 | get_seg_count, | |
928 | /* The cast here works around a difference between Python 2.4 and | |
929 | Python 2.5. */ | |
930 | (CHARBUFFERPROC_NAME) get_char_buffer | |
931 | }; | |
9a27f2c6 | 932 | #endif /* IS_PY3K */ |
595939de | 933 | |
e36122e9 | 934 | PyTypeObject membuf_object_type = { |
9a27f2c6 | 935 | PyVarObject_HEAD_INIT (NULL, 0) |
595939de PM |
936 | "gdb.Membuf", /*tp_name*/ |
937 | sizeof (membuf_object), /*tp_basicsize*/ | |
938 | 0, /*tp_itemsize*/ | |
939 | mbpy_dealloc, /*tp_dealloc*/ | |
940 | 0, /*tp_print*/ | |
941 | 0, /*tp_getattr*/ | |
942 | 0, /*tp_setattr*/ | |
943 | 0, /*tp_compare*/ | |
944 | 0, /*tp_repr*/ | |
945 | 0, /*tp_as_number*/ | |
946 | 0, /*tp_as_sequence*/ | |
947 | 0, /*tp_as_mapping*/ | |
948 | 0, /*tp_hash */ | |
949 | 0, /*tp_call*/ | |
950 | mbpy_str, /*tp_str*/ | |
951 | 0, /*tp_getattro*/ | |
952 | 0, /*tp_setattro*/ | |
953 | &buffer_procs, /*tp_as_buffer*/ | |
954 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ | |
955 | "GDB memory buffer object", /*tp_doc*/ | |
956 | 0, /* tp_traverse */ | |
957 | 0, /* tp_clear */ | |
958 | 0, /* tp_richcompare */ | |
959 | 0, /* tp_weaklistoffset */ | |
960 | 0, /* tp_iter */ | |
961 | 0, /* tp_iternext */ | |
962 | 0, /* tp_methods */ | |
963 | 0, /* tp_members */ | |
964 | 0, /* tp_getset */ | |
965 | 0, /* tp_base */ | |
966 | 0, /* tp_dict */ | |
967 | 0, /* tp_descr_get */ | |
968 | 0, /* tp_descr_set */ | |
969 | 0, /* tp_dictoffset */ | |
970 | 0, /* tp_init */ | |
971 | 0, /* tp_alloc */ | |
595939de | 972 | }; |