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75c0bdf4 TW |
1 | /* Python interface to btrace instruction history. |
2 | ||
42a4f53d | 3 | Copyright 2016-2019 Free Software Foundation, Inc. |
75c0bdf4 TW |
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 "gdbcore.h" | |
22 | #include "gdbcmd.h" | |
23 | #include "gdbthread.h" | |
24 | #include "btrace.h" | |
ae20e79a | 25 | #include "py-record.h" |
75c0bdf4 | 26 | #include "py-record-btrace.h" |
4a4495d6 | 27 | #include "record-btrace.h" |
75c0bdf4 TW |
28 | #include "disasm.h" |
29 | ||
30 | #if defined (IS_PY3K) | |
31 | ||
32 | #define BTPY_PYSLICE(x) (x) | |
33 | ||
34 | #else | |
35 | ||
36 | #define BTPY_PYSLICE(x) ((PySliceObject *) x) | |
37 | ||
38 | #endif | |
39 | ||
75c0bdf4 TW |
40 | /* Python object for btrace record lists. */ |
41 | ||
42 | typedef struct { | |
43 | PyObject_HEAD | |
44 | ||
45 | /* The thread this list belongs to. */ | |
00431a78 | 46 | thread_info *thread; |
75c0bdf4 TW |
47 | |
48 | /* The first index being part of this list. */ | |
49 | Py_ssize_t first; | |
50 | ||
51 | /* The last index begin part of this list. */ | |
52 | Py_ssize_t last; | |
53 | ||
54 | /* Stride size. */ | |
55 | Py_ssize_t step; | |
56 | ||
0ed5da75 | 57 | /* Either &BTPY_CALL_TYPE or &RECPY_INSN_TYPE. */ |
75c0bdf4 TW |
58 | PyTypeObject* element_type; |
59 | } btpy_list_object; | |
60 | ||
75c0bdf4 TW |
61 | /* Python type for btrace lists. */ |
62 | ||
63 | static PyTypeObject btpy_list_type = { | |
64 | PyVarObject_HEAD_INIT (NULL, 0) | |
65 | }; | |
66 | ||
0ed5da75 TW |
67 | /* Returns either a btrace_insn for the given Python gdb.RecordInstruction |
68 | object or sets an appropriate Python exception and returns NULL. */ | |
75c0bdf4 | 69 | |
0ed5da75 TW |
70 | static const btrace_insn * |
71 | btrace_insn_from_recpy_insn (const PyObject * const pyobject) | |
75c0bdf4 | 72 | { |
0ed5da75 TW |
73 | const btrace_insn *insn; |
74 | const recpy_element_object *obj; | |
75 | thread_info *tinfo; | |
76 | btrace_insn_iterator iter; | |
75c0bdf4 | 77 | |
0ed5da75 TW |
78 | if (Py_TYPE (pyobject) != &recpy_insn_type) |
79 | { | |
80 | PyErr_Format (gdbpy_gdb_error, _("Must be gdb.RecordInstruction")); | |
81 | return NULL; | |
82 | } | |
75c0bdf4 | 83 | |
0ed5da75 | 84 | obj = (const recpy_element_object *) pyobject; |
00431a78 | 85 | tinfo = obj->thread; |
75c0bdf4 | 86 | |
0ed5da75 TW |
87 | if (tinfo == NULL || btrace_is_empty (tinfo)) |
88 | { | |
89 | PyErr_Format (gdbpy_gdb_error, _("No such instruction.")); | |
90 | return NULL; | |
91 | } | |
92 | ||
93 | if (btrace_find_insn_by_number (&iter, &tinfo->btrace, obj->number) == 0) | |
94 | { | |
95 | PyErr_Format (gdbpy_gdb_error, _("No such instruction.")); | |
96 | return NULL; | |
97 | } | |
98 | ||
99 | insn = btrace_insn_get (&iter); | |
100 | if (insn == NULL) | |
101 | { | |
102 | PyErr_Format (gdbpy_gdb_error, _("Not a valid instruction.")); | |
103 | return NULL; | |
104 | } | |
105 | ||
106 | return insn; | |
75c0bdf4 TW |
107 | } |
108 | ||
14f819c8 TW |
109 | /* Returns either a btrace_function for the given Python |
110 | gdb.RecordFunctionSegment object or sets an appropriate Python exception and | |
111 | returns NULL. */ | |
112 | ||
113 | static const btrace_function * | |
114 | btrace_func_from_recpy_func (const PyObject * const pyobject) | |
115 | { | |
116 | const btrace_function *func; | |
117 | const recpy_element_object *obj; | |
118 | thread_info *tinfo; | |
119 | btrace_call_iterator iter; | |
120 | ||
121 | if (Py_TYPE (pyobject) != &recpy_func_type) | |
122 | { | |
123 | PyErr_Format (gdbpy_gdb_error, _("Must be gdb.RecordFunctionSegment")); | |
124 | return NULL; | |
125 | } | |
126 | ||
127 | obj = (const recpy_element_object *) pyobject; | |
00431a78 | 128 | tinfo = obj->thread; |
14f819c8 TW |
129 | |
130 | if (tinfo == NULL || btrace_is_empty (tinfo)) | |
131 | { | |
132 | PyErr_Format (gdbpy_gdb_error, _("No such function segment.")); | |
133 | return NULL; | |
134 | } | |
135 | ||
136 | if (btrace_find_call_by_number (&iter, &tinfo->btrace, obj->number) == 0) | |
137 | { | |
138 | PyErr_Format (gdbpy_gdb_error, _("No such function segment.")); | |
139 | return NULL; | |
140 | } | |
141 | ||
142 | func = btrace_call_get (&iter); | |
143 | if (func == NULL) | |
144 | { | |
145 | PyErr_Format (gdbpy_gdb_error, _("Not a valid function segment.")); | |
146 | return NULL; | |
147 | } | |
148 | ||
149 | return func; | |
150 | } | |
151 | ||
913aeadd | 152 | /* Looks at the recorded item with the number NUMBER and create a |
0ed5da75 | 153 | gdb.RecordInstruction or gdb.RecordGap object for it accordingly. */ |
75c0bdf4 TW |
154 | |
155 | static PyObject * | |
00431a78 | 156 | btpy_insn_or_gap_new (thread_info *tinfo, Py_ssize_t number) |
75c0bdf4 | 157 | { |
913aeadd TW |
158 | btrace_insn_iterator iter; |
159 | int err_code; | |
160 | ||
161 | btrace_find_insn_by_number (&iter, &tinfo->btrace, number); | |
162 | err_code = btrace_insn_get_error (&iter); | |
163 | ||
164 | if (err_code != 0) | |
165 | { | |
166 | const btrace_config *config; | |
167 | const char *err_string; | |
168 | ||
169 | config = btrace_conf (&tinfo->btrace); | |
170 | err_string = btrace_decode_error (config->format, err_code); | |
171 | ||
172 | return recpy_gap_new (err_code, err_string, number); | |
173 | } | |
174 | ||
00431a78 | 175 | return recpy_insn_new (tinfo, RECORD_METHOD_BTRACE, number); |
75c0bdf4 TW |
176 | } |
177 | ||
75c0bdf4 TW |
178 | /* Create a new gdb.BtraceList object. */ |
179 | ||
180 | static PyObject * | |
00431a78 | 181 | btpy_list_new (thread_info *thread, Py_ssize_t first, Py_ssize_t last, Py_ssize_t step, |
75c0bdf4 TW |
182 | PyTypeObject *element_type) |
183 | { | |
184 | btpy_list_object * const obj = PyObject_New (btpy_list_object, | |
185 | &btpy_list_type); | |
186 | ||
187 | if (obj == NULL) | |
188 | return NULL; | |
189 | ||
00431a78 | 190 | obj->thread = thread; |
75c0bdf4 TW |
191 | obj->first = first; |
192 | obj->last = last; | |
193 | obj->step = step; | |
194 | obj->element_type = element_type; | |
195 | ||
196 | return (PyObject *) obj; | |
197 | } | |
198 | ||
0ed5da75 TW |
199 | /* Implementation of RecordInstruction.sal [gdb.Symtab_and_line] for btrace. |
200 | Returns the SAL associated with this instruction. */ | |
75c0bdf4 | 201 | |
0ed5da75 TW |
202 | PyObject * |
203 | recpy_bt_insn_sal (PyObject *self, void *closure) | |
75c0bdf4 | 204 | { |
0ed5da75 | 205 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 TW |
206 | PyObject *result = NULL; |
207 | ||
75c0bdf4 | 208 | if (insn == NULL) |
0ed5da75 | 209 | return NULL; |
75c0bdf4 | 210 | |
a70b8144 | 211 | try |
75c0bdf4 TW |
212 | { |
213 | result = symtab_and_line_to_sal_object (find_pc_line (insn->pc, 0)); | |
214 | } | |
230d2906 | 215 | catch (const gdb_exception &except) |
75c0bdf4 TW |
216 | { |
217 | GDB_PY_HANDLE_EXCEPTION (except); | |
218 | } | |
75c0bdf4 TW |
219 | |
220 | return result; | |
221 | } | |
222 | ||
0ed5da75 TW |
223 | /* Implementation of RecordInstruction.pc [int] for btrace. |
224 | Returns the instruction address. */ | |
75c0bdf4 | 225 | |
0ed5da75 TW |
226 | PyObject * |
227 | recpy_bt_insn_pc (PyObject *self, void *closure) | |
75c0bdf4 | 228 | { |
0ed5da75 | 229 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 | 230 | |
75c0bdf4 | 231 | if (insn == NULL) |
0ed5da75 | 232 | return NULL; |
75c0bdf4 TW |
233 | |
234 | return gdb_py_long_from_ulongest (insn->pc); | |
235 | } | |
236 | ||
0ed5da75 TW |
237 | /* Implementation of RecordInstruction.size [int] for btrace. |
238 | Returns the instruction size. */ | |
75c0bdf4 | 239 | |
0ed5da75 TW |
240 | PyObject * |
241 | recpy_bt_insn_size (PyObject *self, void *closure) | |
75c0bdf4 | 242 | { |
0ed5da75 | 243 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 | 244 | |
75c0bdf4 | 245 | if (insn == NULL) |
0ed5da75 | 246 | return NULL; |
75c0bdf4 TW |
247 | |
248 | return PyInt_FromLong (insn->size); | |
249 | } | |
250 | ||
0ed5da75 | 251 | /* Implementation of RecordInstruction.is_speculative [bool] for btrace. |
75c0bdf4 TW |
252 | Returns if this instruction was executed speculatively. */ |
253 | ||
0ed5da75 TW |
254 | PyObject * |
255 | recpy_bt_insn_is_speculative (PyObject *self, void *closure) | |
75c0bdf4 | 256 | { |
0ed5da75 | 257 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 | 258 | |
75c0bdf4 | 259 | if (insn == NULL) |
0ed5da75 | 260 | return NULL; |
75c0bdf4 TW |
261 | |
262 | if (insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) | |
263 | Py_RETURN_TRUE; | |
264 | else | |
265 | Py_RETURN_FALSE; | |
266 | } | |
267 | ||
0ed5da75 | 268 | /* Implementation of RecordInstruction.data [buffer] for btrace. |
75c0bdf4 TW |
269 | Returns raw instruction data. */ |
270 | ||
0ed5da75 TW |
271 | PyObject * |
272 | recpy_bt_insn_data (PyObject *self, void *closure) | |
75c0bdf4 | 273 | { |
0ed5da75 | 274 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
075c55e0 | 275 | gdb::byte_vector buffer; |
75c0bdf4 TW |
276 | PyObject *object; |
277 | ||
75c0bdf4 | 278 | if (insn == NULL) |
0ed5da75 | 279 | return NULL; |
75c0bdf4 | 280 | |
a70b8144 | 281 | try |
75c0bdf4 | 282 | { |
075c55e0 TT |
283 | buffer.resize (insn->size); |
284 | read_memory (insn->pc, buffer.data (), insn->size); | |
75c0bdf4 | 285 | } |
230d2906 | 286 | catch (const gdb_exception &except) |
75c0bdf4 | 287 | { |
75c0bdf4 TW |
288 | GDB_PY_HANDLE_EXCEPTION (except); |
289 | } | |
75c0bdf4 | 290 | |
075c55e0 TT |
291 | object = PyBytes_FromStringAndSize ((const char *) buffer.data (), |
292 | insn->size); | |
75c0bdf4 TW |
293 | |
294 | if (object == NULL) | |
295 | return NULL; | |
296 | ||
cee59b3f | 297 | #ifdef IS_PY3K |
75c0bdf4 | 298 | return PyMemoryView_FromObject (object); |
cee59b3f TW |
299 | #else |
300 | return PyBuffer_FromObject (object, 0, Py_END_OF_BUFFER); | |
301 | #endif | |
302 | ||
75c0bdf4 TW |
303 | } |
304 | ||
0ed5da75 TW |
305 | /* Implementation of RecordInstruction.decoded [str] for btrace. |
306 | Returns the instruction as human readable string. */ | |
75c0bdf4 | 307 | |
0ed5da75 TW |
308 | PyObject * |
309 | recpy_bt_insn_decoded (PyObject *self, void *closure) | |
75c0bdf4 | 310 | { |
0ed5da75 | 311 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 TW |
312 | string_file strfile; |
313 | ||
75c0bdf4 | 314 | if (insn == NULL) |
0ed5da75 | 315 | return NULL; |
75c0bdf4 | 316 | |
a70b8144 | 317 | try |
75c0bdf4 TW |
318 | { |
319 | gdb_print_insn (target_gdbarch (), insn->pc, &strfile, NULL); | |
320 | } | |
230d2906 | 321 | catch (const gdb_exception &except) |
75c0bdf4 TW |
322 | { |
323 | gdbpy_convert_exception (except); | |
324 | return NULL; | |
325 | } | |
75c0bdf4 TW |
326 | |
327 | ||
328 | return PyBytes_FromString (strfile.string ().c_str ()); | |
329 | } | |
330 | ||
14f819c8 TW |
331 | /* Implementation of RecordFunctionSegment.level [int] for btrace. |
332 | Returns the call level. */ | |
75c0bdf4 | 333 | |
14f819c8 TW |
334 | PyObject * |
335 | recpy_bt_func_level (PyObject *self, void *closure) | |
75c0bdf4 | 336 | { |
14f819c8 TW |
337 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
338 | thread_info *tinfo; | |
75c0bdf4 | 339 | |
75c0bdf4 | 340 | if (func == NULL) |
14f819c8 | 341 | return NULL; |
75c0bdf4 | 342 | |
00431a78 | 343 | tinfo = ((recpy_element_object *) self)->thread; |
14f819c8 | 344 | return PyInt_FromLong (tinfo->btrace.level + func->level); |
75c0bdf4 TW |
345 | } |
346 | ||
14f819c8 TW |
347 | /* Implementation of RecordFunctionSegment.symbol [gdb.Symbol] for btrace. |
348 | Returns the symbol associated with this function call. */ | |
75c0bdf4 | 349 | |
14f819c8 TW |
350 | PyObject * |
351 | recpy_bt_func_symbol (PyObject *self, void *closure) | |
75c0bdf4 | 352 | { |
14f819c8 | 353 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 354 | |
75c0bdf4 | 355 | if (func == NULL) |
14f819c8 | 356 | return NULL; |
75c0bdf4 TW |
357 | |
358 | if (func->sym == NULL) | |
359 | Py_RETURN_NONE; | |
360 | ||
361 | return symbol_to_symbol_object (func->sym); | |
362 | } | |
363 | ||
14f819c8 TW |
364 | /* Implementation of RecordFunctionSegment.instructions [list] for btrace. |
365 | Returns the list of instructions that belong to this function call. */ | |
75c0bdf4 | 366 | |
14f819c8 TW |
367 | PyObject * |
368 | recpy_bt_func_instructions (PyObject *self, void *closure) | |
75c0bdf4 | 369 | { |
14f819c8 | 370 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 TW |
371 | unsigned int len; |
372 | ||
75c0bdf4 | 373 | if (func == NULL) |
14f819c8 | 374 | return NULL; |
75c0bdf4 | 375 | |
0860c437 | 376 | len = func->insn.size (); |
75c0bdf4 TW |
377 | |
378 | /* Gaps count as one instruction. */ | |
379 | if (len == 0) | |
380 | len = 1; | |
381 | ||
00431a78 | 382 | return btpy_list_new (((recpy_element_object *) self)->thread, |
14f819c8 TW |
383 | func->insn_offset, func->insn_offset + len, 1, |
384 | &recpy_insn_type); | |
75c0bdf4 TW |
385 | } |
386 | ||
14f819c8 TW |
387 | /* Implementation of RecordFunctionSegment.up [RecordFunctionSegment] for |
388 | btrace. Returns the caller / returnee of this function. */ | |
75c0bdf4 | 389 | |
14f819c8 TW |
390 | PyObject * |
391 | recpy_bt_func_up (PyObject *self, void *closure) | |
75c0bdf4 | 392 | { |
14f819c8 | 393 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 394 | |
75c0bdf4 | 395 | if (func == NULL) |
14f819c8 | 396 | return NULL; |
75c0bdf4 | 397 | |
42bfe59e | 398 | if (func->up == 0) |
75c0bdf4 TW |
399 | Py_RETURN_NONE; |
400 | ||
00431a78 | 401 | return recpy_func_new (((recpy_element_object *) self)->thread, |
42bfe59e | 402 | RECORD_METHOD_BTRACE, func->up); |
75c0bdf4 TW |
403 | } |
404 | ||
14f819c8 TW |
405 | /* Implementation of RecordFunctionSegment.prev [RecordFunctionSegment] for |
406 | btrace. Returns a previous segment of this function. */ | |
75c0bdf4 | 407 | |
14f819c8 TW |
408 | PyObject * |
409 | recpy_bt_func_prev (PyObject *self, void *closure) | |
75c0bdf4 | 410 | { |
14f819c8 | 411 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 412 | |
75c0bdf4 | 413 | if (func == NULL) |
14f819c8 | 414 | return NULL; |
75c0bdf4 | 415 | |
4aeb0dfc | 416 | if (func->prev == 0) |
75c0bdf4 TW |
417 | Py_RETURN_NONE; |
418 | ||
00431a78 | 419 | return recpy_func_new (((recpy_element_object *) self)->thread, |
4aeb0dfc | 420 | RECORD_METHOD_BTRACE, func->prev); |
75c0bdf4 TW |
421 | } |
422 | ||
14f819c8 TW |
423 | /* Implementation of RecordFunctionSegment.next [RecordFunctionSegment] for |
424 | btrace. Returns a following segment of this function. */ | |
75c0bdf4 | 425 | |
14f819c8 TW |
426 | PyObject * |
427 | recpy_bt_func_next (PyObject *self, void *closure) | |
75c0bdf4 | 428 | { |
14f819c8 | 429 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 430 | |
75c0bdf4 | 431 | if (func == NULL) |
14f819c8 | 432 | return NULL; |
75c0bdf4 | 433 | |
4aeb0dfc | 434 | if (func->next == 0) |
75c0bdf4 TW |
435 | Py_RETURN_NONE; |
436 | ||
00431a78 | 437 | return recpy_func_new (((recpy_element_object *) self)->thread, |
4aeb0dfc | 438 | RECORD_METHOD_BTRACE, func->next); |
75c0bdf4 TW |
439 | } |
440 | ||
441 | /* Implementation of BtraceList.__len__ (self) -> int. */ | |
442 | ||
443 | static Py_ssize_t | |
444 | btpy_list_length (PyObject *self) | |
445 | { | |
446 | const btpy_list_object * const obj = (btpy_list_object *) self; | |
447 | const Py_ssize_t distance = obj->last - obj->first; | |
448 | const Py_ssize_t result = distance / obj->step; | |
449 | ||
450 | if ((distance % obj->step) == 0) | |
451 | return result; | |
452 | ||
453 | return result + 1; | |
454 | } | |
455 | ||
456 | /* Implementation of | |
457 | BtraceList.__getitem__ (self, key) -> BtraceInstruction and | |
458 | BtraceList.__getitem__ (self, key) -> BtraceFunctionCall. */ | |
459 | ||
460 | static PyObject * | |
461 | btpy_list_item (PyObject *self, Py_ssize_t index) | |
462 | { | |
463 | const btpy_list_object * const obj = (btpy_list_object *) self; | |
0ed5da75 | 464 | Py_ssize_t number; |
75c0bdf4 TW |
465 | |
466 | if (index < 0 || index >= btpy_list_length (self)) | |
467 | return PyErr_Format (PyExc_IndexError, _("Index out of range: %zd."), | |
468 | index); | |
469 | ||
0ed5da75 TW |
470 | number = obj->first + (obj->step * index); |
471 | ||
472 | if (obj->element_type == &recpy_insn_type) | |
00431a78 | 473 | return recpy_insn_new (obj->thread, RECORD_METHOD_BTRACE, number); |
0ed5da75 | 474 | else |
00431a78 | 475 | return recpy_func_new (obj->thread, RECORD_METHOD_BTRACE, number); |
75c0bdf4 TW |
476 | } |
477 | ||
478 | /* Implementation of BtraceList.__getitem__ (self, slice) -> BtraceList. */ | |
479 | ||
480 | static PyObject * | |
481 | btpy_list_slice (PyObject *self, PyObject *value) | |
482 | { | |
483 | const btpy_list_object * const obj = (btpy_list_object *) self; | |
484 | const Py_ssize_t length = btpy_list_length (self); | |
485 | Py_ssize_t start, stop, step, slicelength; | |
486 | ||
487 | if (PyInt_Check (value)) | |
488 | { | |
489 | Py_ssize_t index = PyInt_AsSsize_t (value); | |
490 | ||
491 | /* Emulate Python behavior for negative indices. */ | |
492 | if (index < 0) | |
493 | index += length; | |
494 | ||
495 | return btpy_list_item (self, index); | |
496 | } | |
497 | ||
498 | if (!PySlice_Check (value)) | |
499 | return PyErr_Format (PyExc_TypeError, _("Index must be int or slice.")); | |
500 | ||
501 | if (0 != PySlice_GetIndicesEx (BTPY_PYSLICE (value), length, &start, &stop, | |
502 | &step, &slicelength)) | |
503 | return NULL; | |
504 | ||
00431a78 | 505 | return btpy_list_new (obj->thread, obj->first + obj->step * start, |
75c0bdf4 TW |
506 | obj->first + obj->step * stop, obj->step * step, |
507 | obj->element_type); | |
508 | } | |
509 | ||
510 | /* Helper function that returns the position of an element in a BtraceList | |
511 | or -1 if the element is not in the list. */ | |
512 | ||
513 | static LONGEST | |
514 | btpy_list_position (PyObject *self, PyObject *value) | |
515 | { | |
516 | const btpy_list_object * const list_obj = (btpy_list_object *) self; | |
0ed5da75 | 517 | const recpy_element_object * const obj = (const recpy_element_object *) value; |
75c0bdf4 TW |
518 | Py_ssize_t index = obj->number; |
519 | ||
520 | if (list_obj->element_type != Py_TYPE (value)) | |
521 | return -1; | |
522 | ||
00431a78 | 523 | if (list_obj->thread != obj->thread) |
75c0bdf4 TW |
524 | return -1; |
525 | ||
526 | if (index < list_obj->first || index > list_obj->last) | |
527 | return -1; | |
528 | ||
529 | index -= list_obj->first; | |
530 | ||
531 | if (index % list_obj->step != 0) | |
532 | return -1; | |
533 | ||
534 | return index / list_obj->step; | |
535 | } | |
536 | ||
537 | /* Implementation of "in" operator for BtraceLists. */ | |
538 | ||
539 | static int | |
540 | btpy_list_contains (PyObject *self, PyObject *value) | |
541 | { | |
542 | if (btpy_list_position (self, value) < 0) | |
543 | return 0; | |
544 | ||
545 | return 1; | |
546 | } | |
547 | ||
548 | /* Implementation of BtraceLists.index (self, value) -> int. */ | |
549 | ||
550 | static PyObject * | |
551 | btpy_list_index (PyObject *self, PyObject *value) | |
552 | { | |
553 | const LONGEST index = btpy_list_position (self, value); | |
554 | ||
555 | if (index < 0) | |
556 | return PyErr_Format (PyExc_ValueError, _("Not in list.")); | |
557 | ||
558 | return gdb_py_long_from_longest (index); | |
559 | } | |
560 | ||
561 | /* Implementation of BtraceList.count (self, value) -> int. */ | |
562 | ||
563 | static PyObject * | |
564 | btpy_list_count (PyObject *self, PyObject *value) | |
565 | { | |
566 | /* We know that if an element is in the list, it is so exactly one time, | |
567 | enabling us to reuse the "is element of" check. */ | |
568 | return PyInt_FromLong (btpy_list_contains (self, value)); | |
569 | } | |
570 | ||
571 | /* Python rich compare function to allow for equality and inequality checks | |
572 | in Python. */ | |
573 | ||
574 | static PyObject * | |
575 | btpy_list_richcompare (PyObject *self, PyObject *other, int op) | |
576 | { | |
577 | const btpy_list_object * const obj1 = (btpy_list_object *) self; | |
578 | const btpy_list_object * const obj2 = (btpy_list_object *) other; | |
579 | ||
580 | if (Py_TYPE (self) != Py_TYPE (other)) | |
581 | { | |
582 | Py_INCREF (Py_NotImplemented); | |
583 | return Py_NotImplemented; | |
584 | } | |
585 | ||
586 | switch (op) | |
587 | { | |
588 | case Py_EQ: | |
00431a78 | 589 | if (obj1->thread == obj2->thread |
75c0bdf4 TW |
590 | && obj1->element_type == obj2->element_type |
591 | && obj1->first == obj2->first | |
592 | && obj1->last == obj2->last | |
593 | && obj1->step == obj2->step) | |
594 | Py_RETURN_TRUE; | |
595 | else | |
596 | Py_RETURN_FALSE; | |
597 | ||
598 | case Py_NE: | |
00431a78 | 599 | if (obj1->thread != obj2->thread |
75c0bdf4 TW |
600 | || obj1->element_type != obj2->element_type |
601 | || obj1->first != obj2->first | |
602 | || obj1->last != obj2->last | |
603 | || obj1->step != obj2->step) | |
604 | Py_RETURN_TRUE; | |
605 | else | |
606 | Py_RETURN_FALSE; | |
607 | ||
608 | default: | |
609 | break; | |
610 | } | |
611 | ||
612 | Py_INCREF (Py_NotImplemented); | |
613 | return Py_NotImplemented; | |
614 | } | |
615 | ||
616 | /* Implementation of | |
617 | BtraceRecord.method [str]. */ | |
618 | ||
619 | PyObject * | |
620 | recpy_bt_method (PyObject *self, void *closure) | |
621 | { | |
622 | return PyString_FromString ("btrace"); | |
623 | } | |
624 | ||
625 | /* Implementation of | |
626 | BtraceRecord.format [str]. */ | |
627 | ||
628 | PyObject * | |
629 | recpy_bt_format (PyObject *self, void *closure) | |
630 | { | |
ae20e79a | 631 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 632 | const struct thread_info * const tinfo = record->thread; |
75c0bdf4 TW |
633 | const struct btrace_config * config; |
634 | ||
635 | if (tinfo == NULL) | |
636 | Py_RETURN_NONE; | |
637 | ||
638 | config = btrace_conf (&tinfo->btrace); | |
639 | ||
640 | if (config == NULL) | |
641 | Py_RETURN_NONE; | |
642 | ||
643 | return PyString_FromString (btrace_format_short_string (config->format)); | |
644 | } | |
645 | ||
646 | /* Implementation of | |
647 | BtraceRecord.replay_position [BtraceInstruction]. */ | |
648 | ||
649 | PyObject * | |
650 | recpy_bt_replay_position (PyObject *self, void *closure) | |
651 | { | |
ae20e79a | 652 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 653 | thread_info * tinfo = record->thread; |
75c0bdf4 TW |
654 | |
655 | if (tinfo == NULL) | |
656 | Py_RETURN_NONE; | |
657 | ||
658 | if (tinfo->btrace.replay == NULL) | |
659 | Py_RETURN_NONE; | |
660 | ||
913aeadd TW |
661 | return btpy_insn_or_gap_new (tinfo, |
662 | btrace_insn_number (tinfo->btrace.replay)); | |
75c0bdf4 TW |
663 | } |
664 | ||
665 | /* Implementation of | |
666 | BtraceRecord.begin [BtraceInstruction]. */ | |
667 | ||
668 | PyObject * | |
669 | recpy_bt_begin (PyObject *self, void *closure) | |
670 | { | |
ae20e79a | 671 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 672 | thread_info *const tinfo = record->thread; |
75c0bdf4 TW |
673 | struct btrace_insn_iterator iterator; |
674 | ||
675 | if (tinfo == NULL) | |
676 | Py_RETURN_NONE; | |
677 | ||
4a4495d6 | 678 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 TW |
679 | |
680 | if (btrace_is_empty (tinfo)) | |
681 | Py_RETURN_NONE; | |
682 | ||
683 | btrace_insn_begin (&iterator, &tinfo->btrace); | |
913aeadd | 684 | return btpy_insn_or_gap_new (tinfo, btrace_insn_number (&iterator)); |
75c0bdf4 TW |
685 | } |
686 | ||
687 | /* Implementation of | |
688 | BtraceRecord.end [BtraceInstruction]. */ | |
689 | ||
690 | PyObject * | |
691 | recpy_bt_end (PyObject *self, void *closure) | |
692 | { | |
ae20e79a | 693 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 694 | thread_info *const tinfo = record->thread; |
75c0bdf4 TW |
695 | struct btrace_insn_iterator iterator; |
696 | ||
697 | if (tinfo == NULL) | |
698 | Py_RETURN_NONE; | |
699 | ||
4a4495d6 | 700 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 TW |
701 | |
702 | if (btrace_is_empty (tinfo)) | |
703 | Py_RETURN_NONE; | |
704 | ||
705 | btrace_insn_end (&iterator, &tinfo->btrace); | |
913aeadd | 706 | return btpy_insn_or_gap_new (tinfo, btrace_insn_number (&iterator)); |
75c0bdf4 TW |
707 | } |
708 | ||
709 | /* Implementation of | |
710 | BtraceRecord.instruction_history [list]. */ | |
711 | ||
712 | PyObject * | |
713 | recpy_bt_instruction_history (PyObject *self, void *closure) | |
714 | { | |
ae20e79a | 715 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 716 | thread_info *const tinfo = record->thread; |
75c0bdf4 TW |
717 | struct btrace_insn_iterator iterator; |
718 | unsigned long first = 0; | |
719 | unsigned long last = 0; | |
720 | ||
721 | if (tinfo == NULL) | |
722 | Py_RETURN_NONE; | |
723 | ||
4a4495d6 | 724 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 TW |
725 | |
726 | if (btrace_is_empty (tinfo)) | |
727 | Py_RETURN_NONE; | |
728 | ||
729 | btrace_insn_begin (&iterator, &tinfo->btrace); | |
730 | first = btrace_insn_number (&iterator); | |
731 | ||
732 | btrace_insn_end (&iterator, &tinfo->btrace); | |
733 | last = btrace_insn_number (&iterator); | |
734 | ||
00431a78 | 735 | return btpy_list_new (tinfo, first, last, 1, &recpy_insn_type); |
75c0bdf4 TW |
736 | } |
737 | ||
738 | /* Implementation of | |
739 | BtraceRecord.function_call_history [list]. */ | |
740 | ||
741 | PyObject * | |
742 | recpy_bt_function_call_history (PyObject *self, void *closure) | |
743 | { | |
ae20e79a | 744 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 745 | thread_info *const tinfo = record->thread; |
8d0050ea TW |
746 | struct btrace_call_iterator iterator; |
747 | unsigned long first = 0; | |
748 | unsigned long last = 0; | |
75c0bdf4 | 749 | |
8d0050ea TW |
750 | if (tinfo == NULL) |
751 | Py_RETURN_NONE; | |
75c0bdf4 | 752 | |
4a4495d6 | 753 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 | 754 | |
8d0050ea TW |
755 | if (btrace_is_empty (tinfo)) |
756 | Py_RETURN_NONE; | |
75c0bdf4 | 757 | |
8d0050ea TW |
758 | btrace_call_begin (&iterator, &tinfo->btrace); |
759 | first = btrace_call_number (&iterator); | |
75c0bdf4 | 760 | |
8d0050ea TW |
761 | btrace_call_end (&iterator, &tinfo->btrace); |
762 | last = btrace_call_number (&iterator); | |
75c0bdf4 | 763 | |
00431a78 | 764 | return btpy_list_new (tinfo, first, last, 1, &recpy_func_type); |
75c0bdf4 TW |
765 | } |
766 | ||
767 | /* Implementation of BtraceRecord.goto (self, BtraceInstruction) -> None. */ | |
768 | ||
769 | PyObject * | |
770 | recpy_bt_goto (PyObject *self, PyObject *args) | |
771 | { | |
ae20e79a | 772 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 773 | thread_info *const tinfo = record->thread; |
0ed5da75 | 774 | const recpy_element_object *obj; |
96b1ad86 | 775 | PyObject *parse_obj; |
75c0bdf4 TW |
776 | |
777 | if (tinfo == NULL || btrace_is_empty (tinfo)) | |
778 | return PyErr_Format (gdbpy_gdb_error, _("Empty branch trace.")); | |
779 | ||
96b1ad86 | 780 | if (!PyArg_ParseTuple (args, "O", &parse_obj)) |
75c0bdf4 TW |
781 | return NULL; |
782 | ||
96b1ad86 | 783 | if (Py_TYPE (parse_obj) != &recpy_insn_type) |
75c0bdf4 | 784 | return PyErr_Format (PyExc_TypeError, _("Argument must be instruction.")); |
96b1ad86 | 785 | obj = (const recpy_element_object *) parse_obj; |
75c0bdf4 | 786 | |
a70b8144 | 787 | try |
75c0bdf4 TW |
788 | { |
789 | struct btrace_insn_iterator iter; | |
790 | ||
791 | btrace_insn_end (&iter, &tinfo->btrace); | |
792 | ||
793 | if (btrace_insn_number (&iter) == obj->number) | |
794 | target_goto_record_end (); | |
795 | else | |
796 | target_goto_record (obj->number); | |
797 | } | |
230d2906 | 798 | catch (const gdb_exception &except) |
75c0bdf4 TW |
799 | { |
800 | GDB_PY_HANDLE_EXCEPTION (except); | |
801 | } | |
75c0bdf4 TW |
802 | |
803 | Py_RETURN_NONE; | |
804 | } | |
805 | ||
75c0bdf4 TW |
806 | /* BtraceList methods. */ |
807 | ||
808 | struct PyMethodDef btpy_list_methods[] = | |
809 | { | |
810 | { "count", btpy_list_count, METH_O, "count number of occurences"}, | |
811 | { "index", btpy_list_index, METH_O, "index of entry"}, | |
812 | {NULL} | |
813 | }; | |
814 | ||
815 | /* BtraceList sequence methods. */ | |
816 | ||
817 | static PySequenceMethods btpy_list_sequence_methods = | |
818 | { | |
819 | NULL | |
820 | }; | |
821 | ||
822 | /* BtraceList mapping methods. Necessary for slicing. */ | |
823 | ||
824 | static PyMappingMethods btpy_list_mapping_methods = | |
825 | { | |
826 | NULL | |
827 | }; | |
828 | ||
829 | /* Sets up the btrace record API. */ | |
830 | ||
831 | int | |
832 | gdbpy_initialize_btrace (void) | |
833 | { | |
75c0bdf4 TW |
834 | btpy_list_type.tp_new = PyType_GenericNew; |
835 | btpy_list_type.tp_flags = Py_TPFLAGS_DEFAULT; | |
836 | btpy_list_type.tp_basicsize = sizeof (btpy_list_object); | |
837 | btpy_list_type.tp_name = "gdb.BtraceObjectList"; | |
838 | btpy_list_type.tp_doc = "GDB btrace list object"; | |
839 | btpy_list_type.tp_methods = btpy_list_methods; | |
840 | btpy_list_type.tp_as_sequence = &btpy_list_sequence_methods; | |
841 | btpy_list_type.tp_as_mapping = &btpy_list_mapping_methods; | |
842 | btpy_list_type.tp_richcompare = btpy_list_richcompare; | |
843 | ||
844 | btpy_list_sequence_methods.sq_item = btpy_list_item; | |
845 | btpy_list_sequence_methods.sq_length = btpy_list_length; | |
846 | btpy_list_sequence_methods.sq_contains = btpy_list_contains; | |
847 | ||
848 | btpy_list_mapping_methods.mp_subscript = btpy_list_slice; | |
849 | ||
14f819c8 | 850 | return PyType_Ready (&btpy_list_type); |
75c0bdf4 | 851 | } |