| 1 | /* Python interface to breakpoints |
| 2 | |
| 3 | Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc. |
| 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" |
| 24 | #include "charset.h" |
| 25 | #include "breakpoint.h" |
| 26 | #include "gdbcmd.h" |
| 27 | #include "gdbthread.h" |
| 28 | #include "observer.h" |
| 29 | #include "cli/cli-script.h" |
| 30 | #include "ada-lang.h" |
| 31 | |
| 32 | /* From breakpoint.c. */ |
| 33 | typedef struct breakpoint_object breakpoint_object; |
| 34 | |
| 35 | static PyTypeObject breakpoint_object_type; |
| 36 | |
| 37 | /* A dynamically allocated vector of breakpoint objects. Each |
| 38 | breakpoint has a number. A breakpoint is valid if its slot in this |
| 39 | vector is non-null. When a breakpoint is deleted, we drop our |
| 40 | reference to it and zero its slot; this is how we let the Python |
| 41 | object have a lifetime which is independent from that of the gdb |
| 42 | breakpoint. */ |
| 43 | static breakpoint_object **bppy_breakpoints; |
| 44 | |
| 45 | /* Number of slots in bppy_breakpoints. */ |
| 46 | static int bppy_slots; |
| 47 | |
| 48 | /* Number of live breakpoints. */ |
| 49 | static int bppy_live; |
| 50 | |
| 51 | /* Variables used to pass information between the Breakpoint |
| 52 | constructor and the breakpoint-created hook function. */ |
| 53 | static breakpoint_object *bppy_pending_object; |
| 54 | |
| 55 | struct breakpoint_object |
| 56 | { |
| 57 | PyObject_HEAD |
| 58 | |
| 59 | /* The breakpoint number according to gdb. */ |
| 60 | int number; |
| 61 | |
| 62 | /* The gdb breakpoint object, or NULL if the breakpoint has been |
| 63 | deleted. */ |
| 64 | struct breakpoint *bp; |
| 65 | }; |
| 66 | |
| 67 | /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python |
| 68 | exception if it is invalid. */ |
| 69 | #define BPPY_REQUIRE_VALID(Breakpoint) \ |
| 70 | do { \ |
| 71 | if (! bpnum_is_valid ((Breakpoint)->number)) \ |
| 72 | return PyErr_Format (PyExc_RuntimeError, _("Breakpoint %d is invalid."), \ |
| 73 | (Breakpoint)->number); \ |
| 74 | } while (0) |
| 75 | |
| 76 | /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python |
| 77 | exception if it is invalid. This macro is for use in setter functions. */ |
| 78 | #define BPPY_SET_REQUIRE_VALID(Breakpoint) \ |
| 79 | do { \ |
| 80 | if (! bpnum_is_valid ((Breakpoint)->number)) \ |
| 81 | { \ |
| 82 | PyErr_Format (PyExc_RuntimeError, _("Breakpoint %d is invalid."), \ |
| 83 | (Breakpoint)->number); \ |
| 84 | return -1; \ |
| 85 | } \ |
| 86 | } while (0) |
| 87 | |
| 88 | /* This is used to initialize various gdb.bp_* constants. */ |
| 89 | struct pybp_code |
| 90 | { |
| 91 | /* The name. */ |
| 92 | const char *name; |
| 93 | /* The code. */ |
| 94 | enum type_code code; |
| 95 | }; |
| 96 | |
| 97 | /* Entries related to the type of user set breakpoints. */ |
| 98 | static struct pybp_code pybp_codes[] = |
| 99 | { |
| 100 | { "BP_NONE", bp_none}, |
| 101 | { "BP_BREAKPOINT", bp_breakpoint}, |
| 102 | { "BP_WATCHPOINT", bp_watchpoint}, |
| 103 | { "BP_HARDWARE_WATCHPOINT", bp_hardware_watchpoint}, |
| 104 | { "BP_READ_WATCHPOINT", bp_read_watchpoint}, |
| 105 | { "BP_ACCESS_WATCHPOINT", bp_access_watchpoint}, |
| 106 | {NULL} /* Sentinel. */ |
| 107 | }; |
| 108 | |
| 109 | /* Entries related to the type of watchpoint. */ |
| 110 | static struct pybp_code pybp_watch_types[] = |
| 111 | { |
| 112 | { "WP_READ", hw_read}, |
| 113 | { "WP_WRITE", hw_write}, |
| 114 | { "WP_ACCESS", hw_access}, |
| 115 | {NULL} /* Sentinel. */ |
| 116 | }; |
| 117 | |
| 118 | /* Evaluate to true if the breakpoint NUM is valid, false otherwise. */ |
| 119 | static int |
| 120 | bpnum_is_valid (int num) |
| 121 | { |
| 122 | if (num >=0 |
| 123 | && num < bppy_slots |
| 124 | && bppy_breakpoints[num] != NULL) |
| 125 | return 1; |
| 126 | |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | /* Python function which checks the validity of a breakpoint object. */ |
| 131 | static PyObject * |
| 132 | bppy_is_valid (PyObject *self, PyObject *args) |
| 133 | { |
| 134 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 135 | |
| 136 | if (self_bp->bp) |
| 137 | Py_RETURN_TRUE; |
| 138 | Py_RETURN_FALSE; |
| 139 | } |
| 140 | |
| 141 | /* Python function to test whether or not the breakpoint is enabled. */ |
| 142 | static PyObject * |
| 143 | bppy_get_enabled (PyObject *self, void *closure) |
| 144 | { |
| 145 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 146 | |
| 147 | BPPY_REQUIRE_VALID (self_bp); |
| 148 | if (! self_bp->bp) |
| 149 | Py_RETURN_FALSE; |
| 150 | if (self_bp->bp->enable_state == bp_enabled) |
| 151 | Py_RETURN_TRUE; |
| 152 | Py_RETURN_FALSE; |
| 153 | } |
| 154 | |
| 155 | /* Python function to test whether or not the breakpoint is silent. */ |
| 156 | static PyObject * |
| 157 | bppy_get_silent (PyObject *self, void *closure) |
| 158 | { |
| 159 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 160 | |
| 161 | BPPY_REQUIRE_VALID (self_bp); |
| 162 | if (self_bp->bp->silent) |
| 163 | Py_RETURN_TRUE; |
| 164 | Py_RETURN_FALSE; |
| 165 | } |
| 166 | |
| 167 | /* Python function to set the enabled state of a breakpoint. */ |
| 168 | static int |
| 169 | bppy_set_enabled (PyObject *self, PyObject *newvalue, void *closure) |
| 170 | { |
| 171 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 172 | int cmp; |
| 173 | |
| 174 | BPPY_SET_REQUIRE_VALID (self_bp); |
| 175 | |
| 176 | if (newvalue == NULL) |
| 177 | { |
| 178 | PyErr_SetString (PyExc_TypeError, |
| 179 | _("Cannot delete `enabled' attribute.")); |
| 180 | |
| 181 | return -1; |
| 182 | } |
| 183 | else if (! PyBool_Check (newvalue)) |
| 184 | { |
| 185 | PyErr_SetString (PyExc_TypeError, |
| 186 | _("The value of `enabled' must be a boolean.")); |
| 187 | return -1; |
| 188 | } |
| 189 | |
| 190 | cmp = PyObject_IsTrue (newvalue); |
| 191 | if (cmp < 0) |
| 192 | return -1; |
| 193 | else if (cmp == 1) |
| 194 | enable_breakpoint (self_bp->bp); |
| 195 | else |
| 196 | disable_breakpoint (self_bp->bp); |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | /* Python function to set the 'silent' state of a breakpoint. */ |
| 201 | static int |
| 202 | bppy_set_silent (PyObject *self, PyObject *newvalue, void *closure) |
| 203 | { |
| 204 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 205 | int cmp; |
| 206 | |
| 207 | BPPY_SET_REQUIRE_VALID (self_bp); |
| 208 | |
| 209 | if (newvalue == NULL) |
| 210 | { |
| 211 | PyErr_SetString (PyExc_TypeError, |
| 212 | _("Cannot delete `silent' attribute.")); |
| 213 | return -1; |
| 214 | } |
| 215 | else if (! PyBool_Check (newvalue)) |
| 216 | { |
| 217 | PyErr_SetString (PyExc_TypeError, |
| 218 | _("The value of `silent' must be a boolean.")); |
| 219 | return -1; |
| 220 | } |
| 221 | |
| 222 | cmp = PyObject_IsTrue (newvalue); |
| 223 | if (cmp < 0) |
| 224 | return -1; |
| 225 | else |
| 226 | self_bp->bp->silent = cmp; |
| 227 | |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | /* Python function to set the thread of a breakpoint. */ |
| 232 | static int |
| 233 | bppy_set_thread (PyObject *self, PyObject *newvalue, void *closure) |
| 234 | { |
| 235 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 236 | int id; |
| 237 | |
| 238 | BPPY_SET_REQUIRE_VALID (self_bp); |
| 239 | |
| 240 | if (newvalue == NULL) |
| 241 | { |
| 242 | PyErr_SetString (PyExc_TypeError, |
| 243 | _("Cannot delete `thread' attribute.")); |
| 244 | return -1; |
| 245 | } |
| 246 | else if (PyInt_Check (newvalue)) |
| 247 | { |
| 248 | id = (int) PyInt_AsLong (newvalue); |
| 249 | if (! valid_thread_id (id)) |
| 250 | { |
| 251 | PyErr_SetString (PyExc_RuntimeError, |
| 252 | _("Invalid thread ID.")); |
| 253 | return -1; |
| 254 | } |
| 255 | } |
| 256 | else if (newvalue == Py_None) |
| 257 | id = -1; |
| 258 | else |
| 259 | { |
| 260 | PyErr_SetString (PyExc_TypeError, |
| 261 | _("The value of `thread' must be an integer or None.")); |
| 262 | return -1; |
| 263 | } |
| 264 | |
| 265 | self_bp->bp->thread = id; |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | /* Python function to set the (Ada) task of a breakpoint. */ |
| 271 | static int |
| 272 | bppy_set_task (PyObject *self, PyObject *newvalue, void *closure) |
| 273 | { |
| 274 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 275 | int id; |
| 276 | |
| 277 | BPPY_SET_REQUIRE_VALID (self_bp); |
| 278 | |
| 279 | if (newvalue == NULL) |
| 280 | { |
| 281 | PyErr_SetString (PyExc_TypeError, |
| 282 | _("Cannot delete `task' attribute.")); |
| 283 | return -1; |
| 284 | } |
| 285 | else if (PyInt_Check (newvalue)) |
| 286 | { |
| 287 | id = (int) PyInt_AsLong (newvalue); |
| 288 | if (! valid_task_id (id)) |
| 289 | { |
| 290 | PyErr_SetString (PyExc_RuntimeError, |
| 291 | _("Invalid task ID.")); |
| 292 | return -1; |
| 293 | } |
| 294 | } |
| 295 | else if (newvalue == Py_None) |
| 296 | id = 0; |
| 297 | else |
| 298 | { |
| 299 | PyErr_SetString (PyExc_TypeError, |
| 300 | _("The value of `task' must be an integer or None.")); |
| 301 | return -1; |
| 302 | } |
| 303 | |
| 304 | self_bp->bp->task = id; |
| 305 | |
| 306 | return 0; |
| 307 | } |
| 308 | |
| 309 | |
| 310 | /* Python function to set the ignore count of a breakpoint. */ |
| 311 | static int |
| 312 | bppy_set_ignore_count (PyObject *self, PyObject *newvalue, void *closure) |
| 313 | { |
| 314 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 315 | long value; |
| 316 | |
| 317 | BPPY_SET_REQUIRE_VALID (self_bp); |
| 318 | |
| 319 | if (newvalue == NULL) |
| 320 | { |
| 321 | PyErr_SetString (PyExc_TypeError, |
| 322 | _("Cannot delete `ignore_count' attribute.")); |
| 323 | return -1; |
| 324 | } |
| 325 | else if (! PyInt_Check (newvalue)) |
| 326 | { |
| 327 | PyErr_SetString (PyExc_TypeError, |
| 328 | _("The value of `ignore_count' must be an integer.")); |
| 329 | return -1; |
| 330 | } |
| 331 | |
| 332 | value = PyInt_AsLong (newvalue); |
| 333 | if (value < 0) |
| 334 | value = 0; |
| 335 | set_ignore_count (self_bp->number, (int) value, 0); |
| 336 | |
| 337 | return 0; |
| 338 | } |
| 339 | |
| 340 | /* Python function to set the hit count of a breakpoint. */ |
| 341 | static int |
| 342 | bppy_set_hit_count (PyObject *self, PyObject *newvalue, void *closure) |
| 343 | { |
| 344 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 345 | |
| 346 | BPPY_SET_REQUIRE_VALID (self_bp); |
| 347 | |
| 348 | if (newvalue == NULL) |
| 349 | { |
| 350 | PyErr_SetString (PyExc_TypeError, |
| 351 | _("Cannot delete `hit_count' attribute.")); |
| 352 | return -1; |
| 353 | } |
| 354 | else if (! PyInt_Check (newvalue) || PyInt_AsLong (newvalue) != 0) |
| 355 | { |
| 356 | PyErr_SetString (PyExc_AttributeError, |
| 357 | _("The value of `hit_count' must be zero.")); |
| 358 | return -1; |
| 359 | } |
| 360 | |
| 361 | self_bp->bp->hit_count = 0; |
| 362 | |
| 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | /* Python function to get the location of a breakpoint. */ |
| 367 | static PyObject * |
| 368 | bppy_get_location (PyObject *self, void *closure) |
| 369 | { |
| 370 | char *str; |
| 371 | breakpoint_object *obj = (breakpoint_object *) self; |
| 372 | |
| 373 | BPPY_REQUIRE_VALID (obj); |
| 374 | |
| 375 | if (obj->bp->type != bp_breakpoint) |
| 376 | Py_RETURN_NONE; |
| 377 | |
| 378 | str = obj->bp->addr_string; |
| 379 | |
| 380 | if (! str) |
| 381 | str = ""; |
| 382 | return PyString_Decode (str, strlen (str), host_charset (), NULL); |
| 383 | } |
| 384 | |
| 385 | /* Python function to get the breakpoint expression. */ |
| 386 | static PyObject * |
| 387 | bppy_get_expression (PyObject *self, void *closure) |
| 388 | { |
| 389 | char *str; |
| 390 | breakpoint_object *obj = (breakpoint_object *) self; |
| 391 | |
| 392 | BPPY_REQUIRE_VALID (obj); |
| 393 | |
| 394 | if (obj->bp->type != bp_watchpoint |
| 395 | && obj->bp->type != bp_hardware_watchpoint |
| 396 | && obj->bp->type != bp_read_watchpoint |
| 397 | && obj->bp->type != bp_access_watchpoint) |
| 398 | Py_RETURN_NONE; |
| 399 | |
| 400 | str = obj->bp->exp_string; |
| 401 | if (! str) |
| 402 | str = ""; |
| 403 | |
| 404 | return PyString_Decode (str, strlen (str), host_charset (), NULL); |
| 405 | } |
| 406 | |
| 407 | /* Python function to get the condition expression of a breakpoint. */ |
| 408 | static PyObject * |
| 409 | bppy_get_condition (PyObject *self, void *closure) |
| 410 | { |
| 411 | char *str; |
| 412 | breakpoint_object *obj = (breakpoint_object *) self; |
| 413 | |
| 414 | BPPY_REQUIRE_VALID (obj); |
| 415 | |
| 416 | str = obj->bp->cond_string; |
| 417 | if (! str) |
| 418 | Py_RETURN_NONE; |
| 419 | |
| 420 | return PyString_Decode (str, strlen (str), host_charset (), NULL); |
| 421 | } |
| 422 | |
| 423 | static int |
| 424 | bppy_set_condition (PyObject *self, PyObject *newvalue, void *closure) |
| 425 | { |
| 426 | char *exp; |
| 427 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 428 | volatile struct gdb_exception except; |
| 429 | |
| 430 | BPPY_SET_REQUIRE_VALID (self_bp); |
| 431 | |
| 432 | if (newvalue == NULL) |
| 433 | { |
| 434 | PyErr_SetString (PyExc_TypeError, |
| 435 | _("Cannot delete `condition' attribute.")); |
| 436 | return -1; |
| 437 | } |
| 438 | else if (newvalue == Py_None) |
| 439 | exp = ""; |
| 440 | else |
| 441 | { |
| 442 | exp = python_string_to_host_string (newvalue); |
| 443 | if (exp == NULL) |
| 444 | return -1; |
| 445 | } |
| 446 | |
| 447 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 448 | { |
| 449 | set_breakpoint_condition (self_bp->bp, exp, 0); |
| 450 | } |
| 451 | GDB_PY_SET_HANDLE_EXCEPTION (except); |
| 452 | |
| 453 | return 0; |
| 454 | } |
| 455 | |
| 456 | /* Python function to get the commands attached to a breakpoint. */ |
| 457 | static PyObject * |
| 458 | bppy_get_commands (PyObject *self, void *closure) |
| 459 | { |
| 460 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 461 | struct breakpoint *bp = self_bp->bp; |
| 462 | long length; |
| 463 | volatile struct gdb_exception except; |
| 464 | struct ui_file *string_file; |
| 465 | struct cleanup *chain; |
| 466 | PyObject *result; |
| 467 | char *cmdstr; |
| 468 | |
| 469 | BPPY_REQUIRE_VALID (self_bp); |
| 470 | |
| 471 | if (! self_bp->bp->commands) |
| 472 | Py_RETURN_NONE; |
| 473 | |
| 474 | string_file = mem_fileopen (); |
| 475 | chain = make_cleanup_ui_file_delete (string_file); |
| 476 | |
| 477 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 478 | { |
| 479 | ui_out_redirect (uiout, string_file); |
| 480 | print_command_lines (uiout, breakpoint_commands (bp), 0); |
| 481 | ui_out_redirect (uiout, NULL); |
| 482 | } |
| 483 | cmdstr = ui_file_xstrdup (string_file, &length); |
| 484 | GDB_PY_HANDLE_EXCEPTION (except); |
| 485 | |
| 486 | result = PyString_Decode (cmdstr, strlen (cmdstr), host_charset (), NULL); |
| 487 | do_cleanups (chain); |
| 488 | xfree (cmdstr); |
| 489 | return result; |
| 490 | } |
| 491 | |
| 492 | /* Python function to get the breakpoint type. */ |
| 493 | static PyObject * |
| 494 | bppy_get_type (PyObject *self, void *closure) |
| 495 | { |
| 496 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 497 | |
| 498 | BPPY_REQUIRE_VALID (self_bp); |
| 499 | |
| 500 | return PyInt_FromLong (self_bp->bp->type); |
| 501 | } |
| 502 | |
| 503 | /* Python function to get the breakpoint's number. */ |
| 504 | static PyObject * |
| 505 | bppy_get_number (PyObject *self, void *closure) |
| 506 | { |
| 507 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 508 | |
| 509 | BPPY_REQUIRE_VALID (self_bp); |
| 510 | |
| 511 | return PyInt_FromLong (self_bp->number); |
| 512 | } |
| 513 | |
| 514 | /* Python function to get the breakpoint's thread ID. */ |
| 515 | static PyObject * |
| 516 | bppy_get_thread (PyObject *self, void *closure) |
| 517 | { |
| 518 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 519 | |
| 520 | BPPY_REQUIRE_VALID (self_bp); |
| 521 | |
| 522 | if (self_bp->bp->thread == -1) |
| 523 | Py_RETURN_NONE; |
| 524 | |
| 525 | return PyInt_FromLong (self_bp->bp->thread); |
| 526 | } |
| 527 | |
| 528 | /* Python function to get the breakpoint's task ID (in Ada). */ |
| 529 | static PyObject * |
| 530 | bppy_get_task (PyObject *self, void *closure) |
| 531 | { |
| 532 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 533 | |
| 534 | BPPY_REQUIRE_VALID (self_bp); |
| 535 | |
| 536 | if (self_bp->bp->task == 0) |
| 537 | Py_RETURN_NONE; |
| 538 | |
| 539 | return PyInt_FromLong (self_bp->bp->task); |
| 540 | } |
| 541 | |
| 542 | /* Python function to get the breakpoint's hit count. */ |
| 543 | static PyObject * |
| 544 | bppy_get_hit_count (PyObject *self, void *closure) |
| 545 | { |
| 546 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 547 | |
| 548 | BPPY_REQUIRE_VALID (self_bp); |
| 549 | |
| 550 | return PyInt_FromLong (self_bp->bp->hit_count); |
| 551 | } |
| 552 | |
| 553 | /* Python function to get the breakpoint's ignore count. */ |
| 554 | static PyObject * |
| 555 | bppy_get_ignore_count (PyObject *self, void *closure) |
| 556 | { |
| 557 | breakpoint_object *self_bp = (breakpoint_object *) self; |
| 558 | |
| 559 | BPPY_REQUIRE_VALID (self_bp); |
| 560 | |
| 561 | return PyInt_FromLong (self_bp->bp->ignore_count); |
| 562 | } |
| 563 | |
| 564 | /* Python function to create a new breakpoint. */ |
| 565 | static PyObject * |
| 566 | bppy_new (PyTypeObject *subtype, PyObject *args, PyObject *kwargs) |
| 567 | { |
| 568 | PyObject *result; |
| 569 | static char *keywords[] = { "spec", "type", "wp_class", NULL }; |
| 570 | char *spec; |
| 571 | int type = bp_breakpoint; |
| 572 | int access_type = hw_write; |
| 573 | volatile struct gdb_exception except; |
| 574 | |
| 575 | if (! PyArg_ParseTupleAndKeywords (args, kwargs, "s|ii", keywords, |
| 576 | &spec, &type, &access_type)) |
| 577 | return NULL; |
| 578 | |
| 579 | result = subtype->tp_alloc (subtype, 0); |
| 580 | if (! result) |
| 581 | return NULL; |
| 582 | bppy_pending_object = (breakpoint_object *) result; |
| 583 | bppy_pending_object->number = -1; |
| 584 | bppy_pending_object->bp = NULL; |
| 585 | |
| 586 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 587 | { |
| 588 | switch (type) |
| 589 | { |
| 590 | case bp_breakpoint: |
| 591 | { |
| 592 | create_breakpoint (python_gdbarch, |
| 593 | spec, NULL, -1, |
| 594 | 0, |
| 595 | 0, 0, 0, |
| 596 | 0, |
| 597 | AUTO_BOOLEAN_TRUE, |
| 598 | NULL, 0, 1); |
| 599 | break; |
| 600 | } |
| 601 | case bp_watchpoint: |
| 602 | { |
| 603 | if (access_type == hw_write) |
| 604 | watch_command_wrapper (spec, 0); |
| 605 | else if (access_type == hw_access) |
| 606 | awatch_command_wrapper (spec, 0); |
| 607 | else if (access_type == hw_read) |
| 608 | rwatch_command_wrapper (spec, 0); |
| 609 | else |
| 610 | error(_("Cannot understand watchpoint access type.")); |
| 611 | break; |
| 612 | } |
| 613 | default: |
| 614 | error(_("Do not understand breakpoint type to set.")); |
| 615 | } |
| 616 | } |
| 617 | if (except.reason < 0) |
| 618 | { |
| 619 | subtype->tp_free (result); |
| 620 | return PyErr_Format (except.reason == RETURN_QUIT |
| 621 | ? PyExc_KeyboardInterrupt : PyExc_RuntimeError, |
| 622 | "%s", except.message); |
| 623 | } |
| 624 | |
| 625 | BPPY_REQUIRE_VALID ((breakpoint_object *) result); |
| 626 | return result; |
| 627 | } |
| 628 | |
| 629 | \f |
| 630 | |
| 631 | /* Static function to return a tuple holding all breakpoints. */ |
| 632 | |
| 633 | PyObject * |
| 634 | gdbpy_breakpoints (PyObject *self, PyObject *args) |
| 635 | { |
| 636 | PyObject *result; |
| 637 | |
| 638 | if (bppy_live == 0) |
| 639 | Py_RETURN_NONE; |
| 640 | |
| 641 | result = PyTuple_New (bppy_live); |
| 642 | if (result) |
| 643 | { |
| 644 | int i, out = 0; |
| 645 | |
| 646 | for (i = 0; out < bppy_live; ++i) |
| 647 | { |
| 648 | if (! bppy_breakpoints[i]) |
| 649 | continue; |
| 650 | Py_INCREF (bppy_breakpoints[i]); |
| 651 | PyTuple_SetItem (result, out, (PyObject *) bppy_breakpoints[i]); |
| 652 | ++out; |
| 653 | } |
| 654 | } |
| 655 | return result; |
| 656 | } |
| 657 | |
| 658 | \f |
| 659 | |
| 660 | /* Event callback functions. */ |
| 661 | |
| 662 | /* Callback that is used when a breakpoint is created. This function |
| 663 | will create a new Python breakpoint object. */ |
| 664 | static void |
| 665 | gdbpy_breakpoint_created (int num) |
| 666 | { |
| 667 | breakpoint_object *newbp; |
| 668 | struct breakpoint *bp = NULL; |
| 669 | PyGILState_STATE state; |
| 670 | |
| 671 | if (num < 0) |
| 672 | return; |
| 673 | |
| 674 | bp = get_breakpoint (num); |
| 675 | if (! bp) |
| 676 | return; |
| 677 | |
| 678 | if (bp->type != bp_breakpoint |
| 679 | && bp->type != bp_watchpoint |
| 680 | && bp->type != bp_hardware_watchpoint |
| 681 | && bp->type != bp_read_watchpoint |
| 682 | && bp->type != bp_access_watchpoint) |
| 683 | return; |
| 684 | |
| 685 | if (num >= bppy_slots) |
| 686 | { |
| 687 | int old = bppy_slots; |
| 688 | |
| 689 | bppy_slots = bppy_slots * 2 + 10; |
| 690 | bppy_breakpoints |
| 691 | = (breakpoint_object **) xrealloc (bppy_breakpoints, |
| 692 | (bppy_slots |
| 693 | * sizeof (breakpoint_object *))); |
| 694 | memset (&bppy_breakpoints[old], 0, |
| 695 | (bppy_slots - old) * sizeof (PyObject *)); |
| 696 | } |
| 697 | |
| 698 | ++bppy_live; |
| 699 | |
| 700 | state = PyGILState_Ensure (); |
| 701 | |
| 702 | if (bppy_pending_object) |
| 703 | { |
| 704 | newbp = bppy_pending_object; |
| 705 | bppy_pending_object = NULL; |
| 706 | } |
| 707 | else |
| 708 | newbp = PyObject_New (breakpoint_object, &breakpoint_object_type); |
| 709 | if (newbp) |
| 710 | { |
| 711 | newbp->number = num; |
| 712 | newbp->bp = bp; |
| 713 | bppy_breakpoints[num] = newbp; |
| 714 | Py_INCREF (newbp); |
| 715 | } |
| 716 | |
| 717 | /* Just ignore errors here. */ |
| 718 | PyErr_Clear (); |
| 719 | |
| 720 | PyGILState_Release (state); |
| 721 | } |
| 722 | |
| 723 | /* Callback that is used when a breakpoint is deleted. This will |
| 724 | invalidate the corresponding Python object. */ |
| 725 | static void |
| 726 | gdbpy_breakpoint_deleted (int num) |
| 727 | { |
| 728 | PyGILState_STATE state; |
| 729 | |
| 730 | state = PyGILState_Ensure (); |
| 731 | if (bpnum_is_valid (num)) |
| 732 | { |
| 733 | bppy_breakpoints[num]->bp = NULL; |
| 734 | Py_DECREF (bppy_breakpoints[num]); |
| 735 | bppy_breakpoints[num] = NULL; |
| 736 | --bppy_live; |
| 737 | } |
| 738 | PyGILState_Release (state); |
| 739 | } |
| 740 | |
| 741 | \f |
| 742 | |
| 743 | /* Initialize the Python breakpoint code. */ |
| 744 | void |
| 745 | gdbpy_initialize_breakpoints (void) |
| 746 | { |
| 747 | int i; |
| 748 | |
| 749 | breakpoint_object_type.tp_new = bppy_new; |
| 750 | if (PyType_Ready (&breakpoint_object_type) < 0) |
| 751 | return; |
| 752 | |
| 753 | Py_INCREF (&breakpoint_object_type); |
| 754 | PyModule_AddObject (gdb_module, "Breakpoint", |
| 755 | (PyObject *) &breakpoint_object_type); |
| 756 | |
| 757 | observer_attach_breakpoint_created (gdbpy_breakpoint_created); |
| 758 | observer_attach_breakpoint_deleted (gdbpy_breakpoint_deleted); |
| 759 | |
| 760 | /* Add breakpoint types constants. */ |
| 761 | for (i = 0; pybp_codes[i].name; ++i) |
| 762 | { |
| 763 | if (PyModule_AddIntConstant (gdb_module, |
| 764 | /* Cast needed for Python 2.4. */ |
| 765 | (char *) pybp_codes[i].name, |
| 766 | pybp_codes[i].code) < 0) |
| 767 | return; |
| 768 | } |
| 769 | |
| 770 | /* Add watchpoint types constants. */ |
| 771 | for (i = 0; pybp_watch_types[i].name; ++i) |
| 772 | { |
| 773 | if (PyModule_AddIntConstant (gdb_module, |
| 774 | /* Cast needed for Python 2.4. */ |
| 775 | (char *) pybp_watch_types[i].name, |
| 776 | pybp_watch_types[i].code) < 0) |
| 777 | return; |
| 778 | } |
| 779 | |
| 780 | } |
| 781 | |
| 782 | \f |
| 783 | |
| 784 | static PyGetSetDef breakpoint_object_getset[] = { |
| 785 | { "enabled", bppy_get_enabled, bppy_set_enabled, |
| 786 | "Boolean telling whether the breakpoint is enabled.", NULL }, |
| 787 | { "silent", bppy_get_silent, bppy_set_silent, |
| 788 | "Boolean telling whether the breakpoint is silent.", NULL }, |
| 789 | { "thread", bppy_get_thread, bppy_set_thread, |
| 790 | "Thread ID for the breakpoint.\n\ |
| 791 | If the value is a thread ID (integer), then this is a thread-specific breakpoint.\n\ |
| 792 | If the value is None, then this breakpoint is not thread-specific.\n\ |
| 793 | No other type of value can be used.", NULL }, |
| 794 | { "task", bppy_get_task, bppy_set_task, |
| 795 | "Thread ID for the breakpoint.\n\ |
| 796 | If the value is a task ID (integer), then this is an Ada task-specific breakpoint.\n\ |
| 797 | If the value is None, then this breakpoint is not task-specific.\n\ |
| 798 | No other type of value can be used.", NULL }, |
| 799 | { "ignore_count", bppy_get_ignore_count, bppy_set_ignore_count, |
| 800 | "Number of times this breakpoint should be automatically continued.", |
| 801 | NULL }, |
| 802 | { "number", bppy_get_number, NULL, |
| 803 | "Breakpoint's number assigned by GDB.", NULL }, |
| 804 | { "hit_count", bppy_get_hit_count, bppy_set_hit_count, |
| 805 | "Number of times the breakpoint has been hit.\n\ |
| 806 | Can be set to zero to clear the count. No other value is valid\n\ |
| 807 | when setting this property.", NULL }, |
| 808 | { "location", bppy_get_location, NULL, |
| 809 | "Location of the breakpoint, as specified by the user.", NULL}, |
| 810 | { "expression", bppy_get_expression, NULL, |
| 811 | "Expression of the breakpoint, as specified by the user.", NULL}, |
| 812 | { "condition", bppy_get_condition, bppy_set_condition, |
| 813 | "Condition of the breakpoint, as specified by the user,\ |
| 814 | or None if no condition set."}, |
| 815 | { "commands", bppy_get_commands, NULL, |
| 816 | "Commands of the breakpoint, as specified by the user."}, |
| 817 | { "type", bppy_get_type, NULL, |
| 818 | "Type of breakpoint."}, |
| 819 | { NULL } /* Sentinel. */ |
| 820 | }; |
| 821 | |
| 822 | static PyMethodDef breakpoint_object_methods[] = |
| 823 | { |
| 824 | { "is_valid", bppy_is_valid, METH_NOARGS, |
| 825 | "Return true if this breakpoint is valid, false if not." }, |
| 826 | { NULL } /* Sentinel. */ |
| 827 | }; |
| 828 | |
| 829 | static PyTypeObject breakpoint_object_type = |
| 830 | { |
| 831 | PyObject_HEAD_INIT (NULL) |
| 832 | 0, /*ob_size*/ |
| 833 | "gdb.Breakpoint", /*tp_name*/ |
| 834 | sizeof (breakpoint_object), /*tp_basicsize*/ |
| 835 | 0, /*tp_itemsize*/ |
| 836 | 0, /*tp_dealloc*/ |
| 837 | 0, /*tp_print*/ |
| 838 | 0, /*tp_getattr*/ |
| 839 | 0, /*tp_setattr*/ |
| 840 | 0, /*tp_compare*/ |
| 841 | 0, /*tp_repr*/ |
| 842 | 0, /*tp_as_number*/ |
| 843 | 0, /*tp_as_sequence*/ |
| 844 | 0, /*tp_as_mapping*/ |
| 845 | 0, /*tp_hash */ |
| 846 | 0, /*tp_call*/ |
| 847 | 0, /*tp_str*/ |
| 848 | 0, /*tp_getattro*/ |
| 849 | 0, /*tp_setattro*/ |
| 850 | 0, /*tp_as_buffer*/ |
| 851 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| 852 | "GDB breakpoint object", /* tp_doc */ |
| 853 | 0, /* tp_traverse */ |
| 854 | 0, /* tp_clear */ |
| 855 | 0, /* tp_richcompare */ |
| 856 | 0, /* tp_weaklistoffset */ |
| 857 | 0, /* tp_iter */ |
| 858 | 0, /* tp_iternext */ |
| 859 | breakpoint_object_methods, /* tp_methods */ |
| 860 | 0, /* tp_members */ |
| 861 | breakpoint_object_getset /* tp_getset */ |
| 862 | }; |