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75c0bdf4 TW |
1 | /* Python interface to btrace instruction history. |
2 | ||
3666a048 | 3 | Copyright 2016-2021 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 | 28 | #include "disasm.h" |
0d12e84c | 29 | #include "gdbarch.h" |
75c0bdf4 TW |
30 | |
31 | #if defined (IS_PY3K) | |
32 | ||
33 | #define BTPY_PYSLICE(x) (x) | |
34 | ||
35 | #else | |
36 | ||
37 | #define BTPY_PYSLICE(x) ((PySliceObject *) x) | |
38 | ||
39 | #endif | |
40 | ||
75c0bdf4 TW |
41 | /* Python object for btrace record lists. */ |
42 | ||
f99b5177 | 43 | struct btpy_list_object { |
75c0bdf4 TW |
44 | PyObject_HEAD |
45 | ||
46 | /* The thread this list belongs to. */ | |
00431a78 | 47 | thread_info *thread; |
75c0bdf4 TW |
48 | |
49 | /* The first index being part of this list. */ | |
50 | Py_ssize_t first; | |
51 | ||
52 | /* The last index begin part of this list. */ | |
53 | Py_ssize_t last; | |
54 | ||
55 | /* Stride size. */ | |
56 | Py_ssize_t step; | |
57 | ||
0ed5da75 | 58 | /* Either &BTPY_CALL_TYPE or &RECPY_INSN_TYPE. */ |
75c0bdf4 | 59 | PyTypeObject* element_type; |
f99b5177 | 60 | }; |
75c0bdf4 | 61 | |
75c0bdf4 TW |
62 | /* Python type for btrace lists. */ |
63 | ||
64 | static PyTypeObject btpy_list_type = { | |
65 | PyVarObject_HEAD_INIT (NULL, 0) | |
66 | }; | |
67 | ||
0ed5da75 TW |
68 | /* Returns either a btrace_insn for the given Python gdb.RecordInstruction |
69 | object or sets an appropriate Python exception and returns NULL. */ | |
75c0bdf4 | 70 | |
0ed5da75 TW |
71 | static const btrace_insn * |
72 | btrace_insn_from_recpy_insn (const PyObject * const pyobject) | |
75c0bdf4 | 73 | { |
0ed5da75 TW |
74 | const btrace_insn *insn; |
75 | const recpy_element_object *obj; | |
76 | thread_info *tinfo; | |
77 | btrace_insn_iterator iter; | |
75c0bdf4 | 78 | |
0ed5da75 TW |
79 | if (Py_TYPE (pyobject) != &recpy_insn_type) |
80 | { | |
81 | PyErr_Format (gdbpy_gdb_error, _("Must be gdb.RecordInstruction")); | |
82 | return NULL; | |
83 | } | |
75c0bdf4 | 84 | |
0ed5da75 | 85 | obj = (const recpy_element_object *) pyobject; |
00431a78 | 86 | tinfo = obj->thread; |
75c0bdf4 | 87 | |
0ed5da75 TW |
88 | if (tinfo == NULL || btrace_is_empty (tinfo)) |
89 | { | |
90 | PyErr_Format (gdbpy_gdb_error, _("No such instruction.")); | |
91 | return NULL; | |
92 | } | |
93 | ||
94 | if (btrace_find_insn_by_number (&iter, &tinfo->btrace, obj->number) == 0) | |
95 | { | |
96 | PyErr_Format (gdbpy_gdb_error, _("No such instruction.")); | |
97 | return NULL; | |
98 | } | |
99 | ||
100 | insn = btrace_insn_get (&iter); | |
101 | if (insn == NULL) | |
102 | { | |
103 | PyErr_Format (gdbpy_gdb_error, _("Not a valid instruction.")); | |
104 | return NULL; | |
105 | } | |
106 | ||
107 | return insn; | |
75c0bdf4 TW |
108 | } |
109 | ||
14f819c8 TW |
110 | /* Returns either a btrace_function for the given Python |
111 | gdb.RecordFunctionSegment object or sets an appropriate Python exception and | |
112 | returns NULL. */ | |
113 | ||
114 | static const btrace_function * | |
115 | btrace_func_from_recpy_func (const PyObject * const pyobject) | |
116 | { | |
117 | const btrace_function *func; | |
118 | const recpy_element_object *obj; | |
119 | thread_info *tinfo; | |
120 | btrace_call_iterator iter; | |
121 | ||
122 | if (Py_TYPE (pyobject) != &recpy_func_type) | |
123 | { | |
124 | PyErr_Format (gdbpy_gdb_error, _("Must be gdb.RecordFunctionSegment")); | |
125 | return NULL; | |
126 | } | |
127 | ||
128 | obj = (const recpy_element_object *) pyobject; | |
00431a78 | 129 | tinfo = obj->thread; |
14f819c8 TW |
130 | |
131 | if (tinfo == NULL || btrace_is_empty (tinfo)) | |
132 | { | |
133 | PyErr_Format (gdbpy_gdb_error, _("No such function segment.")); | |
134 | return NULL; | |
135 | } | |
136 | ||
137 | if (btrace_find_call_by_number (&iter, &tinfo->btrace, obj->number) == 0) | |
138 | { | |
139 | PyErr_Format (gdbpy_gdb_error, _("No such function segment.")); | |
140 | return NULL; | |
141 | } | |
142 | ||
143 | func = btrace_call_get (&iter); | |
144 | if (func == NULL) | |
145 | { | |
146 | PyErr_Format (gdbpy_gdb_error, _("Not a valid function segment.")); | |
147 | return NULL; | |
148 | } | |
149 | ||
150 | return func; | |
151 | } | |
152 | ||
913aeadd | 153 | /* Looks at the recorded item with the number NUMBER and create a |
0ed5da75 | 154 | gdb.RecordInstruction or gdb.RecordGap object for it accordingly. */ |
75c0bdf4 TW |
155 | |
156 | static PyObject * | |
00431a78 | 157 | btpy_insn_or_gap_new (thread_info *tinfo, Py_ssize_t number) |
75c0bdf4 | 158 | { |
913aeadd TW |
159 | btrace_insn_iterator iter; |
160 | int err_code; | |
161 | ||
162 | btrace_find_insn_by_number (&iter, &tinfo->btrace, number); | |
163 | err_code = btrace_insn_get_error (&iter); | |
164 | ||
165 | if (err_code != 0) | |
166 | { | |
167 | const btrace_config *config; | |
168 | const char *err_string; | |
169 | ||
170 | config = btrace_conf (&tinfo->btrace); | |
171 | err_string = btrace_decode_error (config->format, err_code); | |
172 | ||
173 | return recpy_gap_new (err_code, err_string, number); | |
174 | } | |
175 | ||
00431a78 | 176 | return recpy_insn_new (tinfo, RECORD_METHOD_BTRACE, number); |
75c0bdf4 TW |
177 | } |
178 | ||
75c0bdf4 TW |
179 | /* Create a new gdb.BtraceList object. */ |
180 | ||
181 | static PyObject * | |
00431a78 | 182 | btpy_list_new (thread_info *thread, Py_ssize_t first, Py_ssize_t last, Py_ssize_t step, |
75c0bdf4 TW |
183 | PyTypeObject *element_type) |
184 | { | |
185 | btpy_list_object * const obj = PyObject_New (btpy_list_object, | |
186 | &btpy_list_type); | |
187 | ||
188 | if (obj == NULL) | |
189 | return NULL; | |
190 | ||
00431a78 | 191 | obj->thread = thread; |
75c0bdf4 TW |
192 | obj->first = first; |
193 | obj->last = last; | |
194 | obj->step = step; | |
195 | obj->element_type = element_type; | |
196 | ||
197 | return (PyObject *) obj; | |
198 | } | |
199 | ||
0ed5da75 TW |
200 | /* Implementation of RecordInstruction.sal [gdb.Symtab_and_line] for btrace. |
201 | Returns the SAL associated with this instruction. */ | |
75c0bdf4 | 202 | |
0ed5da75 TW |
203 | PyObject * |
204 | recpy_bt_insn_sal (PyObject *self, void *closure) | |
75c0bdf4 | 205 | { |
0ed5da75 | 206 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 TW |
207 | PyObject *result = NULL; |
208 | ||
75c0bdf4 | 209 | if (insn == NULL) |
0ed5da75 | 210 | return NULL; |
75c0bdf4 | 211 | |
a70b8144 | 212 | try |
75c0bdf4 TW |
213 | { |
214 | result = symtab_and_line_to_sal_object (find_pc_line (insn->pc, 0)); | |
215 | } | |
230d2906 | 216 | catch (const gdb_exception &except) |
75c0bdf4 TW |
217 | { |
218 | GDB_PY_HANDLE_EXCEPTION (except); | |
219 | } | |
75c0bdf4 TW |
220 | |
221 | return result; | |
222 | } | |
223 | ||
0ed5da75 TW |
224 | /* Implementation of RecordInstruction.pc [int] for btrace. |
225 | Returns the instruction address. */ | |
75c0bdf4 | 226 | |
0ed5da75 TW |
227 | PyObject * |
228 | recpy_bt_insn_pc (PyObject *self, void *closure) | |
75c0bdf4 | 229 | { |
0ed5da75 | 230 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 | 231 | |
75c0bdf4 | 232 | if (insn == NULL) |
0ed5da75 | 233 | return NULL; |
75c0bdf4 | 234 | |
d1cab987 | 235 | return gdb_py_object_from_ulongest (insn->pc).release (); |
75c0bdf4 TW |
236 | } |
237 | ||
0ed5da75 TW |
238 | /* Implementation of RecordInstruction.size [int] for btrace. |
239 | Returns the instruction size. */ | |
75c0bdf4 | 240 | |
0ed5da75 TW |
241 | PyObject * |
242 | recpy_bt_insn_size (PyObject *self, void *closure) | |
75c0bdf4 | 243 | { |
0ed5da75 | 244 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 | 245 | |
75c0bdf4 | 246 | if (insn == NULL) |
0ed5da75 | 247 | return NULL; |
75c0bdf4 | 248 | |
47f0e2ff | 249 | return gdb_py_object_from_longest (insn->size).release (); |
75c0bdf4 TW |
250 | } |
251 | ||
0ed5da75 | 252 | /* Implementation of RecordInstruction.is_speculative [bool] for btrace. |
75c0bdf4 TW |
253 | Returns if this instruction was executed speculatively. */ |
254 | ||
0ed5da75 TW |
255 | PyObject * |
256 | recpy_bt_insn_is_speculative (PyObject *self, void *closure) | |
75c0bdf4 | 257 | { |
0ed5da75 | 258 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 | 259 | |
75c0bdf4 | 260 | if (insn == NULL) |
0ed5da75 | 261 | return NULL; |
75c0bdf4 TW |
262 | |
263 | if (insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) | |
264 | Py_RETURN_TRUE; | |
265 | else | |
266 | Py_RETURN_FALSE; | |
267 | } | |
268 | ||
0ed5da75 | 269 | /* Implementation of RecordInstruction.data [buffer] for btrace. |
75c0bdf4 TW |
270 | Returns raw instruction data. */ |
271 | ||
0ed5da75 TW |
272 | PyObject * |
273 | recpy_bt_insn_data (PyObject *self, void *closure) | |
75c0bdf4 | 274 | { |
0ed5da75 | 275 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
075c55e0 | 276 | gdb::byte_vector buffer; |
75c0bdf4 TW |
277 | PyObject *object; |
278 | ||
75c0bdf4 | 279 | if (insn == NULL) |
0ed5da75 | 280 | return NULL; |
75c0bdf4 | 281 | |
a70b8144 | 282 | try |
75c0bdf4 | 283 | { |
075c55e0 TT |
284 | buffer.resize (insn->size); |
285 | read_memory (insn->pc, buffer.data (), insn->size); | |
75c0bdf4 | 286 | } |
230d2906 | 287 | catch (const gdb_exception &except) |
75c0bdf4 | 288 | { |
75c0bdf4 TW |
289 | GDB_PY_HANDLE_EXCEPTION (except); |
290 | } | |
75c0bdf4 | 291 | |
075c55e0 TT |
292 | object = PyBytes_FromStringAndSize ((const char *) buffer.data (), |
293 | insn->size); | |
75c0bdf4 TW |
294 | |
295 | if (object == NULL) | |
296 | return NULL; | |
297 | ||
cee59b3f | 298 | #ifdef IS_PY3K |
75c0bdf4 | 299 | return PyMemoryView_FromObject (object); |
cee59b3f TW |
300 | #else |
301 | return PyBuffer_FromObject (object, 0, Py_END_OF_BUFFER); | |
302 | #endif | |
303 | ||
75c0bdf4 TW |
304 | } |
305 | ||
0ed5da75 TW |
306 | /* Implementation of RecordInstruction.decoded [str] for btrace. |
307 | Returns the instruction as human readable string. */ | |
75c0bdf4 | 308 | |
0ed5da75 TW |
309 | PyObject * |
310 | recpy_bt_insn_decoded (PyObject *self, void *closure) | |
75c0bdf4 | 311 | { |
0ed5da75 | 312 | const btrace_insn * const insn = btrace_insn_from_recpy_insn (self); |
75c0bdf4 TW |
313 | string_file strfile; |
314 | ||
75c0bdf4 | 315 | if (insn == NULL) |
0ed5da75 | 316 | return NULL; |
75c0bdf4 | 317 | |
a70b8144 | 318 | try |
75c0bdf4 TW |
319 | { |
320 | gdb_print_insn (target_gdbarch (), insn->pc, &strfile, NULL); | |
321 | } | |
230d2906 | 322 | catch (const gdb_exception &except) |
75c0bdf4 TW |
323 | { |
324 | gdbpy_convert_exception (except); | |
325 | return NULL; | |
326 | } | |
75c0bdf4 TW |
327 | |
328 | ||
329 | return PyBytes_FromString (strfile.string ().c_str ()); | |
330 | } | |
331 | ||
14f819c8 TW |
332 | /* Implementation of RecordFunctionSegment.level [int] for btrace. |
333 | Returns the call level. */ | |
75c0bdf4 | 334 | |
14f819c8 TW |
335 | PyObject * |
336 | recpy_bt_func_level (PyObject *self, void *closure) | |
75c0bdf4 | 337 | { |
14f819c8 TW |
338 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
339 | thread_info *tinfo; | |
75c0bdf4 | 340 | |
75c0bdf4 | 341 | if (func == NULL) |
14f819c8 | 342 | return NULL; |
75c0bdf4 | 343 | |
00431a78 | 344 | tinfo = ((recpy_element_object *) self)->thread; |
47f0e2ff TT |
345 | return gdb_py_object_from_longest (tinfo->btrace.level |
346 | + func->level).release (); | |
75c0bdf4 TW |
347 | } |
348 | ||
14f819c8 TW |
349 | /* Implementation of RecordFunctionSegment.symbol [gdb.Symbol] for btrace. |
350 | Returns the symbol associated with this function call. */ | |
75c0bdf4 | 351 | |
14f819c8 TW |
352 | PyObject * |
353 | recpy_bt_func_symbol (PyObject *self, void *closure) | |
75c0bdf4 | 354 | { |
14f819c8 | 355 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 356 | |
75c0bdf4 | 357 | if (func == NULL) |
14f819c8 | 358 | return NULL; |
75c0bdf4 TW |
359 | |
360 | if (func->sym == NULL) | |
361 | Py_RETURN_NONE; | |
362 | ||
363 | return symbol_to_symbol_object (func->sym); | |
364 | } | |
365 | ||
14f819c8 TW |
366 | /* Implementation of RecordFunctionSegment.instructions [list] for btrace. |
367 | Returns the list of instructions that belong to this function call. */ | |
75c0bdf4 | 368 | |
14f819c8 TW |
369 | PyObject * |
370 | recpy_bt_func_instructions (PyObject *self, void *closure) | |
75c0bdf4 | 371 | { |
14f819c8 | 372 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 TW |
373 | unsigned int len; |
374 | ||
75c0bdf4 | 375 | if (func == NULL) |
14f819c8 | 376 | return NULL; |
75c0bdf4 | 377 | |
0860c437 | 378 | len = func->insn.size (); |
75c0bdf4 TW |
379 | |
380 | /* Gaps count as one instruction. */ | |
381 | if (len == 0) | |
382 | len = 1; | |
383 | ||
00431a78 | 384 | return btpy_list_new (((recpy_element_object *) self)->thread, |
14f819c8 TW |
385 | func->insn_offset, func->insn_offset + len, 1, |
386 | &recpy_insn_type); | |
75c0bdf4 TW |
387 | } |
388 | ||
14f819c8 TW |
389 | /* Implementation of RecordFunctionSegment.up [RecordFunctionSegment] for |
390 | btrace. Returns the caller / returnee of this function. */ | |
75c0bdf4 | 391 | |
14f819c8 TW |
392 | PyObject * |
393 | recpy_bt_func_up (PyObject *self, void *closure) | |
75c0bdf4 | 394 | { |
14f819c8 | 395 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 396 | |
75c0bdf4 | 397 | if (func == NULL) |
14f819c8 | 398 | return NULL; |
75c0bdf4 | 399 | |
42bfe59e | 400 | if (func->up == 0) |
75c0bdf4 TW |
401 | Py_RETURN_NONE; |
402 | ||
00431a78 | 403 | return recpy_func_new (((recpy_element_object *) self)->thread, |
42bfe59e | 404 | RECORD_METHOD_BTRACE, func->up); |
75c0bdf4 TW |
405 | } |
406 | ||
14f819c8 TW |
407 | /* Implementation of RecordFunctionSegment.prev [RecordFunctionSegment] for |
408 | btrace. Returns a previous segment of this function. */ | |
75c0bdf4 | 409 | |
14f819c8 TW |
410 | PyObject * |
411 | recpy_bt_func_prev (PyObject *self, void *closure) | |
75c0bdf4 | 412 | { |
14f819c8 | 413 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 414 | |
75c0bdf4 | 415 | if (func == NULL) |
14f819c8 | 416 | return NULL; |
75c0bdf4 | 417 | |
4aeb0dfc | 418 | if (func->prev == 0) |
75c0bdf4 TW |
419 | Py_RETURN_NONE; |
420 | ||
00431a78 | 421 | return recpy_func_new (((recpy_element_object *) self)->thread, |
4aeb0dfc | 422 | RECORD_METHOD_BTRACE, func->prev); |
75c0bdf4 TW |
423 | } |
424 | ||
14f819c8 TW |
425 | /* Implementation of RecordFunctionSegment.next [RecordFunctionSegment] for |
426 | btrace. Returns a following segment of this function. */ | |
75c0bdf4 | 427 | |
14f819c8 TW |
428 | PyObject * |
429 | recpy_bt_func_next (PyObject *self, void *closure) | |
75c0bdf4 | 430 | { |
14f819c8 | 431 | const btrace_function * const func = btrace_func_from_recpy_func (self); |
75c0bdf4 | 432 | |
75c0bdf4 | 433 | if (func == NULL) |
14f819c8 | 434 | return NULL; |
75c0bdf4 | 435 | |
4aeb0dfc | 436 | if (func->next == 0) |
75c0bdf4 TW |
437 | Py_RETURN_NONE; |
438 | ||
00431a78 | 439 | return recpy_func_new (((recpy_element_object *) self)->thread, |
4aeb0dfc | 440 | RECORD_METHOD_BTRACE, func->next); |
75c0bdf4 TW |
441 | } |
442 | ||
443 | /* Implementation of BtraceList.__len__ (self) -> int. */ | |
444 | ||
445 | static Py_ssize_t | |
446 | btpy_list_length (PyObject *self) | |
447 | { | |
448 | const btpy_list_object * const obj = (btpy_list_object *) self; | |
449 | const Py_ssize_t distance = obj->last - obj->first; | |
450 | const Py_ssize_t result = distance / obj->step; | |
451 | ||
452 | if ((distance % obj->step) == 0) | |
453 | return result; | |
454 | ||
455 | return result + 1; | |
456 | } | |
457 | ||
458 | /* Implementation of | |
459 | BtraceList.__getitem__ (self, key) -> BtraceInstruction and | |
460 | BtraceList.__getitem__ (self, key) -> BtraceFunctionCall. */ | |
461 | ||
462 | static PyObject * | |
463 | btpy_list_item (PyObject *self, Py_ssize_t index) | |
464 | { | |
465 | const btpy_list_object * const obj = (btpy_list_object *) self; | |
0ed5da75 | 466 | Py_ssize_t number; |
75c0bdf4 TW |
467 | |
468 | if (index < 0 || index >= btpy_list_length (self)) | |
469 | return PyErr_Format (PyExc_IndexError, _("Index out of range: %zd."), | |
470 | index); | |
471 | ||
0ed5da75 TW |
472 | number = obj->first + (obj->step * index); |
473 | ||
474 | if (obj->element_type == &recpy_insn_type) | |
00431a78 | 475 | return recpy_insn_new (obj->thread, RECORD_METHOD_BTRACE, number); |
0ed5da75 | 476 | else |
00431a78 | 477 | return recpy_func_new (obj->thread, RECORD_METHOD_BTRACE, number); |
75c0bdf4 TW |
478 | } |
479 | ||
480 | /* Implementation of BtraceList.__getitem__ (self, slice) -> BtraceList. */ | |
481 | ||
482 | static PyObject * | |
483 | btpy_list_slice (PyObject *self, PyObject *value) | |
484 | { | |
485 | const btpy_list_object * const obj = (btpy_list_object *) self; | |
486 | const Py_ssize_t length = btpy_list_length (self); | |
487 | Py_ssize_t start, stop, step, slicelength; | |
488 | ||
489 | if (PyInt_Check (value)) | |
490 | { | |
491 | Py_ssize_t index = PyInt_AsSsize_t (value); | |
492 | ||
493 | /* Emulate Python behavior for negative indices. */ | |
494 | if (index < 0) | |
495 | index += length; | |
496 | ||
497 | return btpy_list_item (self, index); | |
498 | } | |
499 | ||
500 | if (!PySlice_Check (value)) | |
501 | return PyErr_Format (PyExc_TypeError, _("Index must be int or slice.")); | |
502 | ||
503 | if (0 != PySlice_GetIndicesEx (BTPY_PYSLICE (value), length, &start, &stop, | |
504 | &step, &slicelength)) | |
505 | return NULL; | |
506 | ||
00431a78 | 507 | return btpy_list_new (obj->thread, obj->first + obj->step * start, |
75c0bdf4 TW |
508 | obj->first + obj->step * stop, obj->step * step, |
509 | obj->element_type); | |
510 | } | |
511 | ||
512 | /* Helper function that returns the position of an element in a BtraceList | |
513 | or -1 if the element is not in the list. */ | |
514 | ||
515 | static LONGEST | |
516 | btpy_list_position (PyObject *self, PyObject *value) | |
517 | { | |
518 | const btpy_list_object * const list_obj = (btpy_list_object *) self; | |
0ed5da75 | 519 | const recpy_element_object * const obj = (const recpy_element_object *) value; |
75c0bdf4 TW |
520 | Py_ssize_t index = obj->number; |
521 | ||
522 | if (list_obj->element_type != Py_TYPE (value)) | |
523 | return -1; | |
524 | ||
00431a78 | 525 | if (list_obj->thread != obj->thread) |
75c0bdf4 TW |
526 | return -1; |
527 | ||
528 | if (index < list_obj->first || index > list_obj->last) | |
529 | return -1; | |
530 | ||
531 | index -= list_obj->first; | |
532 | ||
533 | if (index % list_obj->step != 0) | |
534 | return -1; | |
535 | ||
536 | return index / list_obj->step; | |
537 | } | |
538 | ||
539 | /* Implementation of "in" operator for BtraceLists. */ | |
540 | ||
541 | static int | |
542 | btpy_list_contains (PyObject *self, PyObject *value) | |
543 | { | |
544 | if (btpy_list_position (self, value) < 0) | |
545 | return 0; | |
546 | ||
547 | return 1; | |
548 | } | |
549 | ||
550 | /* Implementation of BtraceLists.index (self, value) -> int. */ | |
551 | ||
552 | static PyObject * | |
553 | btpy_list_index (PyObject *self, PyObject *value) | |
554 | { | |
555 | const LONGEST index = btpy_list_position (self, value); | |
556 | ||
557 | if (index < 0) | |
558 | return PyErr_Format (PyExc_ValueError, _("Not in list.")); | |
559 | ||
4bde49dc | 560 | return gdb_py_object_from_longest (index).release (); |
75c0bdf4 TW |
561 | } |
562 | ||
563 | /* Implementation of BtraceList.count (self, value) -> int. */ | |
564 | ||
565 | static PyObject * | |
566 | btpy_list_count (PyObject *self, PyObject *value) | |
567 | { | |
568 | /* We know that if an element is in the list, it is so exactly one time, | |
569 | enabling us to reuse the "is element of" check. */ | |
47f0e2ff TT |
570 | return gdb_py_object_from_longest (btpy_list_contains (self, |
571 | value)).release (); | |
75c0bdf4 TW |
572 | } |
573 | ||
574 | /* Python rich compare function to allow for equality and inequality checks | |
575 | in Python. */ | |
576 | ||
577 | static PyObject * | |
578 | btpy_list_richcompare (PyObject *self, PyObject *other, int op) | |
579 | { | |
580 | const btpy_list_object * const obj1 = (btpy_list_object *) self; | |
581 | const btpy_list_object * const obj2 = (btpy_list_object *) other; | |
582 | ||
583 | if (Py_TYPE (self) != Py_TYPE (other)) | |
584 | { | |
585 | Py_INCREF (Py_NotImplemented); | |
586 | return Py_NotImplemented; | |
587 | } | |
588 | ||
589 | switch (op) | |
590 | { | |
591 | case Py_EQ: | |
00431a78 | 592 | if (obj1->thread == obj2->thread |
75c0bdf4 TW |
593 | && obj1->element_type == obj2->element_type |
594 | && obj1->first == obj2->first | |
595 | && obj1->last == obj2->last | |
596 | && obj1->step == obj2->step) | |
597 | Py_RETURN_TRUE; | |
598 | else | |
599 | Py_RETURN_FALSE; | |
600 | ||
601 | case Py_NE: | |
00431a78 | 602 | if (obj1->thread != obj2->thread |
75c0bdf4 TW |
603 | || obj1->element_type != obj2->element_type |
604 | || obj1->first != obj2->first | |
605 | || obj1->last != obj2->last | |
606 | || obj1->step != obj2->step) | |
607 | Py_RETURN_TRUE; | |
608 | else | |
609 | Py_RETURN_FALSE; | |
610 | ||
611 | default: | |
612 | break; | |
613 | } | |
614 | ||
615 | Py_INCREF (Py_NotImplemented); | |
616 | return Py_NotImplemented; | |
617 | } | |
618 | ||
619 | /* Implementation of | |
620 | BtraceRecord.method [str]. */ | |
621 | ||
622 | PyObject * | |
623 | recpy_bt_method (PyObject *self, void *closure) | |
624 | { | |
625 | return PyString_FromString ("btrace"); | |
626 | } | |
627 | ||
628 | /* Implementation of | |
629 | BtraceRecord.format [str]. */ | |
630 | ||
631 | PyObject * | |
632 | recpy_bt_format (PyObject *self, void *closure) | |
633 | { | |
ae20e79a | 634 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 635 | const struct thread_info * const tinfo = record->thread; |
75c0bdf4 TW |
636 | const struct btrace_config * config; |
637 | ||
638 | if (tinfo == NULL) | |
639 | Py_RETURN_NONE; | |
640 | ||
641 | config = btrace_conf (&tinfo->btrace); | |
642 | ||
643 | if (config == NULL) | |
644 | Py_RETURN_NONE; | |
645 | ||
646 | return PyString_FromString (btrace_format_short_string (config->format)); | |
647 | } | |
648 | ||
649 | /* Implementation of | |
650 | BtraceRecord.replay_position [BtraceInstruction]. */ | |
651 | ||
652 | PyObject * | |
653 | recpy_bt_replay_position (PyObject *self, void *closure) | |
654 | { | |
ae20e79a | 655 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 656 | thread_info * tinfo = record->thread; |
75c0bdf4 TW |
657 | |
658 | if (tinfo == NULL) | |
659 | Py_RETURN_NONE; | |
660 | ||
661 | if (tinfo->btrace.replay == NULL) | |
662 | Py_RETURN_NONE; | |
663 | ||
913aeadd TW |
664 | return btpy_insn_or_gap_new (tinfo, |
665 | btrace_insn_number (tinfo->btrace.replay)); | |
75c0bdf4 TW |
666 | } |
667 | ||
668 | /* Implementation of | |
669 | BtraceRecord.begin [BtraceInstruction]. */ | |
670 | ||
671 | PyObject * | |
672 | recpy_bt_begin (PyObject *self, void *closure) | |
673 | { | |
ae20e79a | 674 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 675 | thread_info *const tinfo = record->thread; |
75c0bdf4 TW |
676 | struct btrace_insn_iterator iterator; |
677 | ||
678 | if (tinfo == NULL) | |
679 | Py_RETURN_NONE; | |
680 | ||
4a4495d6 | 681 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 TW |
682 | |
683 | if (btrace_is_empty (tinfo)) | |
684 | Py_RETURN_NONE; | |
685 | ||
686 | btrace_insn_begin (&iterator, &tinfo->btrace); | |
913aeadd | 687 | return btpy_insn_or_gap_new (tinfo, btrace_insn_number (&iterator)); |
75c0bdf4 TW |
688 | } |
689 | ||
690 | /* Implementation of | |
691 | BtraceRecord.end [BtraceInstruction]. */ | |
692 | ||
693 | PyObject * | |
694 | recpy_bt_end (PyObject *self, void *closure) | |
695 | { | |
ae20e79a | 696 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 697 | thread_info *const tinfo = record->thread; |
75c0bdf4 TW |
698 | struct btrace_insn_iterator iterator; |
699 | ||
700 | if (tinfo == NULL) | |
701 | Py_RETURN_NONE; | |
702 | ||
4a4495d6 | 703 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 TW |
704 | |
705 | if (btrace_is_empty (tinfo)) | |
706 | Py_RETURN_NONE; | |
707 | ||
708 | btrace_insn_end (&iterator, &tinfo->btrace); | |
913aeadd | 709 | return btpy_insn_or_gap_new (tinfo, btrace_insn_number (&iterator)); |
75c0bdf4 TW |
710 | } |
711 | ||
712 | /* Implementation of | |
713 | BtraceRecord.instruction_history [list]. */ | |
714 | ||
715 | PyObject * | |
716 | recpy_bt_instruction_history (PyObject *self, void *closure) | |
717 | { | |
ae20e79a | 718 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 719 | thread_info *const tinfo = record->thread; |
75c0bdf4 TW |
720 | struct btrace_insn_iterator iterator; |
721 | unsigned long first = 0; | |
722 | unsigned long last = 0; | |
723 | ||
724 | if (tinfo == NULL) | |
725 | Py_RETURN_NONE; | |
726 | ||
4a4495d6 | 727 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 TW |
728 | |
729 | if (btrace_is_empty (tinfo)) | |
730 | Py_RETURN_NONE; | |
731 | ||
732 | btrace_insn_begin (&iterator, &tinfo->btrace); | |
733 | first = btrace_insn_number (&iterator); | |
734 | ||
735 | btrace_insn_end (&iterator, &tinfo->btrace); | |
736 | last = btrace_insn_number (&iterator); | |
737 | ||
00431a78 | 738 | return btpy_list_new (tinfo, first, last, 1, &recpy_insn_type); |
75c0bdf4 TW |
739 | } |
740 | ||
741 | /* Implementation of | |
742 | BtraceRecord.function_call_history [list]. */ | |
743 | ||
744 | PyObject * | |
745 | recpy_bt_function_call_history (PyObject *self, void *closure) | |
746 | { | |
ae20e79a | 747 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 748 | thread_info *const tinfo = record->thread; |
8d0050ea TW |
749 | struct btrace_call_iterator iterator; |
750 | unsigned long first = 0; | |
751 | unsigned long last = 0; | |
75c0bdf4 | 752 | |
8d0050ea TW |
753 | if (tinfo == NULL) |
754 | Py_RETURN_NONE; | |
75c0bdf4 | 755 | |
4a4495d6 | 756 | btrace_fetch (tinfo, record_btrace_get_cpu ()); |
75c0bdf4 | 757 | |
8d0050ea TW |
758 | if (btrace_is_empty (tinfo)) |
759 | Py_RETURN_NONE; | |
75c0bdf4 | 760 | |
8d0050ea TW |
761 | btrace_call_begin (&iterator, &tinfo->btrace); |
762 | first = btrace_call_number (&iterator); | |
75c0bdf4 | 763 | |
8d0050ea TW |
764 | btrace_call_end (&iterator, &tinfo->btrace); |
765 | last = btrace_call_number (&iterator); | |
75c0bdf4 | 766 | |
00431a78 | 767 | return btpy_list_new (tinfo, first, last, 1, &recpy_func_type); |
75c0bdf4 TW |
768 | } |
769 | ||
770 | /* Implementation of BtraceRecord.goto (self, BtraceInstruction) -> None. */ | |
771 | ||
772 | PyObject * | |
773 | recpy_bt_goto (PyObject *self, PyObject *args) | |
774 | { | |
ae20e79a | 775 | const recpy_record_object * const record = (recpy_record_object *) self; |
00431a78 | 776 | thread_info *const tinfo = record->thread; |
0ed5da75 | 777 | const recpy_element_object *obj; |
96b1ad86 | 778 | PyObject *parse_obj; |
75c0bdf4 TW |
779 | |
780 | if (tinfo == NULL || btrace_is_empty (tinfo)) | |
781 | return PyErr_Format (gdbpy_gdb_error, _("Empty branch trace.")); | |
782 | ||
96b1ad86 | 783 | if (!PyArg_ParseTuple (args, "O", &parse_obj)) |
75c0bdf4 TW |
784 | return NULL; |
785 | ||
96b1ad86 | 786 | if (Py_TYPE (parse_obj) != &recpy_insn_type) |
75c0bdf4 | 787 | return PyErr_Format (PyExc_TypeError, _("Argument must be instruction.")); |
96b1ad86 | 788 | obj = (const recpy_element_object *) parse_obj; |
75c0bdf4 | 789 | |
a70b8144 | 790 | try |
75c0bdf4 TW |
791 | { |
792 | struct btrace_insn_iterator iter; | |
793 | ||
794 | btrace_insn_end (&iter, &tinfo->btrace); | |
795 | ||
796 | if (btrace_insn_number (&iter) == obj->number) | |
797 | target_goto_record_end (); | |
798 | else | |
799 | target_goto_record (obj->number); | |
800 | } | |
230d2906 | 801 | catch (const gdb_exception &except) |
75c0bdf4 TW |
802 | { |
803 | GDB_PY_HANDLE_EXCEPTION (except); | |
804 | } | |
75c0bdf4 TW |
805 | |
806 | Py_RETURN_NONE; | |
807 | } | |
808 | ||
75c0bdf4 TW |
809 | /* BtraceList methods. */ |
810 | ||
811 | struct PyMethodDef btpy_list_methods[] = | |
812 | { | |
40c94099 | 813 | { "count", btpy_list_count, METH_O, "count number of occurrences"}, |
75c0bdf4 TW |
814 | { "index", btpy_list_index, METH_O, "index of entry"}, |
815 | {NULL} | |
816 | }; | |
817 | ||
818 | /* BtraceList sequence methods. */ | |
819 | ||
820 | static PySequenceMethods btpy_list_sequence_methods = | |
821 | { | |
822 | NULL | |
823 | }; | |
824 | ||
825 | /* BtraceList mapping methods. Necessary for slicing. */ | |
826 | ||
827 | static PyMappingMethods btpy_list_mapping_methods = | |
828 | { | |
829 | NULL | |
830 | }; | |
831 | ||
832 | /* Sets up the btrace record API. */ | |
833 | ||
834 | int | |
835 | gdbpy_initialize_btrace (void) | |
836 | { | |
75c0bdf4 TW |
837 | btpy_list_type.tp_new = PyType_GenericNew; |
838 | btpy_list_type.tp_flags = Py_TPFLAGS_DEFAULT; | |
839 | btpy_list_type.tp_basicsize = sizeof (btpy_list_object); | |
840 | btpy_list_type.tp_name = "gdb.BtraceObjectList"; | |
841 | btpy_list_type.tp_doc = "GDB btrace list object"; | |
842 | btpy_list_type.tp_methods = btpy_list_methods; | |
843 | btpy_list_type.tp_as_sequence = &btpy_list_sequence_methods; | |
844 | btpy_list_type.tp_as_mapping = &btpy_list_mapping_methods; | |
845 | btpy_list_type.tp_richcompare = btpy_list_richcompare; | |
846 | ||
847 | btpy_list_sequence_methods.sq_item = btpy_list_item; | |
848 | btpy_list_sequence_methods.sq_length = btpy_list_length; | |
849 | btpy_list_sequence_methods.sq_contains = btpy_list_contains; | |
850 | ||
851 | btpy_list_mapping_methods.mp_subscript = btpy_list_slice; | |
852 | ||
14f819c8 | 853 | return PyType_Ready (&btpy_list_type); |
75c0bdf4 | 854 | } |