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1e611234 PM |
1 | /* Python frame filters |
2 | ||
618f726f | 3 | Copyright (C) 2013-2016 Free Software Foundation, Inc. |
1e611234 PM |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "objfiles.h" | |
22 | #include "symtab.h" | |
23 | #include "language.h" | |
1e611234 PM |
24 | #include "arch-utils.h" |
25 | #include "python.h" | |
26 | #include "ui-out.h" | |
27 | #include "valprint.h" | |
28 | #include "annotate.h" | |
29 | #include "hashtab.h" | |
30 | #include "demangle.h" | |
31 | #include "mi/mi-cmds.h" | |
32 | #include "python-internal.h" | |
33 | ||
34 | enum mi_print_types | |
35 | { | |
36 | MI_PRINT_ARGS, | |
37 | MI_PRINT_LOCALS | |
38 | }; | |
39 | ||
40 | /* Helper function to extract a symbol, a name and a language | |
41 | definition from a Python object that conforms to the "Symbol Value" | |
42 | interface. OBJ is the Python object to extract the values from. | |
43 | NAME is a pass-through argument where the name of the symbol will | |
44 | be written. NAME is allocated in this function, but the caller is | |
45 | responsible for clean up. SYM is a pass-through argument where the | |
63e43d3a PMR |
46 | symbol will be written and SYM_BLOCK is a pass-through argument to |
47 | write the block where the symbol lies in. In the case of the API | |
48 | returning a string, this will be set to NULL. LANGUAGE is also a | |
49 | pass-through argument denoting the language attributed to the | |
50 | Symbol. In the case of SYM being NULL, this will be set to the | |
51 | current language. Returns EXT_LANG_BT_ERROR on error with the | |
52 | appropriate Python exception set, and EXT_LANG_BT_OK on success. */ | |
1e611234 | 53 | |
6dddc817 | 54 | static enum ext_lang_bt_status |
9b972014 TT |
55 | extract_sym (PyObject *obj, gdb::unique_xmalloc_ptr<char> *name, |
56 | struct symbol **sym, struct block **sym_block, | |
57 | const struct language_defn **language) | |
1e611234 PM |
58 | { |
59 | PyObject *result = PyObject_CallMethod (obj, "symbol", NULL); | |
60 | ||
61 | if (result == NULL) | |
6dddc817 | 62 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
63 | |
64 | /* For 'symbol' callback, the function can return a symbol or a | |
65 | string. */ | |
66 | if (gdbpy_is_string (result)) | |
67 | { | |
68 | *name = python_string_to_host_string (result); | |
69 | Py_DECREF (result); | |
70 | ||
71 | if (*name == NULL) | |
6dddc817 | 72 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
73 | /* If the API returns a string (and not a symbol), then there is |
74 | no symbol derived language available and the frame filter has | |
75 | either overridden the symbol with a string, or supplied a | |
76 | entirely synthetic symbol/value pairing. In that case, use | |
77 | python_language. */ | |
78 | *language = python_language; | |
79 | *sym = NULL; | |
63e43d3a | 80 | *sym_block = NULL; |
1e611234 PM |
81 | } |
82 | else | |
83 | { | |
84 | /* This type checks 'result' during the conversion so we | |
85 | just call it unconditionally and check the return. */ | |
86 | *sym = symbol_object_to_symbol (result); | |
63e43d3a PMR |
87 | /* TODO: currently, we have no way to recover the block in which SYMBOL |
88 | was found, so we have no block to return. Trying to evaluate SYMBOL | |
89 | will yield an incorrect value when it's located in a FRAME and | |
90 | evaluated from another frame (as permitted in nested functions). */ | |
91 | *sym_block = NULL; | |
1e611234 PM |
92 | |
93 | Py_DECREF (result); | |
94 | ||
95 | if (*sym == NULL) | |
96 | { | |
97 | PyErr_SetString (PyExc_RuntimeError, | |
98 | _("Unexpected value. Expecting a " | |
99 | "gdb.Symbol or a Python string.")); | |
6dddc817 | 100 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
101 | } |
102 | ||
103 | /* Duplicate the symbol name, so the caller has consistency | |
104 | in garbage collection. */ | |
9b972014 | 105 | name->reset (xstrdup (SYMBOL_PRINT_NAME (*sym))); |
1e611234 PM |
106 | |
107 | /* If a symbol is specified attempt to determine the language | |
108 | from the symbol. If mode is not "auto", then the language | |
109 | has been explicitly set, use that. */ | |
110 | if (language_mode == language_mode_auto) | |
111 | *language = language_def (SYMBOL_LANGUAGE (*sym)); | |
112 | else | |
113 | *language = current_language; | |
114 | } | |
115 | ||
6dddc817 | 116 | return EXT_LANG_BT_OK; |
1e611234 PM |
117 | } |
118 | ||
119 | /* Helper function to extract a value from an object that conforms to | |
120 | the "Symbol Value" interface. OBJ is the Python object to extract | |
121 | the value from. VALUE is a pass-through argument where the value | |
122 | will be written. If the object does not have the value attribute, | |
123 | or provides the Python None for a value, VALUE will be set to NULL | |
6dddc817 DE |
124 | and this function will return as successful. Returns EXT_LANG_BT_ERROR |
125 | on error with the appropriate Python exception set, and EXT_LANG_BT_OK on | |
1e611234 PM |
126 | success. */ |
127 | ||
6dddc817 | 128 | static enum ext_lang_bt_status |
1e611234 PM |
129 | extract_value (PyObject *obj, struct value **value) |
130 | { | |
131 | if (PyObject_HasAttrString (obj, "value")) | |
132 | { | |
133 | PyObject *vresult = PyObject_CallMethod (obj, "value", NULL); | |
134 | ||
135 | if (vresult == NULL) | |
6dddc817 | 136 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
137 | |
138 | /* The Python code has returned 'None' for a value, so we set | |
139 | value to NULL. This flags that GDB should read the | |
140 | value. */ | |
141 | if (vresult == Py_None) | |
142 | { | |
143 | Py_DECREF (vresult); | |
144 | *value = NULL; | |
6dddc817 | 145 | return EXT_LANG_BT_OK; |
1e611234 PM |
146 | } |
147 | else | |
148 | { | |
149 | *value = convert_value_from_python (vresult); | |
150 | Py_DECREF (vresult); | |
151 | ||
152 | if (*value == NULL) | |
6dddc817 | 153 | return EXT_LANG_BT_ERROR; |
1e611234 | 154 | |
6dddc817 | 155 | return EXT_LANG_BT_OK; |
1e611234 PM |
156 | } |
157 | } | |
158 | else | |
159 | *value = NULL; | |
160 | ||
6dddc817 | 161 | return EXT_LANG_BT_OK; |
1e611234 PM |
162 | } |
163 | ||
164 | /* MI prints only certain values according to the type of symbol and | |
165 | also what the user has specified. SYM is the symbol to check, and | |
166 | MI_PRINT_TYPES is an enum specifying what the user wants emitted | |
167 | for the MI command in question. */ | |
168 | static int | |
169 | mi_should_print (struct symbol *sym, enum mi_print_types type) | |
170 | { | |
171 | int print_me = 0; | |
172 | ||
173 | switch (SYMBOL_CLASS (sym)) | |
174 | { | |
175 | default: | |
176 | case LOC_UNDEF: /* catches errors */ | |
177 | case LOC_CONST: /* constant */ | |
178 | case LOC_TYPEDEF: /* local typedef */ | |
179 | case LOC_LABEL: /* local label */ | |
180 | case LOC_BLOCK: /* local function */ | |
181 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
182 | case LOC_UNRESOLVED: /* unresolved static */ | |
183 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
184 | print_me = 0; | |
185 | break; | |
186 | ||
187 | case LOC_ARG: /* argument */ | |
188 | case LOC_REF_ARG: /* reference arg */ | |
189 | case LOC_REGPARM_ADDR: /* indirect register arg */ | |
190 | case LOC_LOCAL: /* stack local */ | |
191 | case LOC_STATIC: /* static */ | |
192 | case LOC_REGISTER: /* register */ | |
193 | case LOC_COMPUTED: /* computed location */ | |
194 | if (type == MI_PRINT_LOCALS) | |
195 | print_me = ! SYMBOL_IS_ARGUMENT (sym); | |
196 | else | |
197 | print_me = SYMBOL_IS_ARGUMENT (sym); | |
198 | } | |
199 | return print_me; | |
200 | } | |
201 | ||
202 | /* Helper function which outputs a type name extracted from VAL to a | |
203 | "type" field in the output stream OUT. OUT is the ui-out structure | |
204 | the type name will be output too, and VAL is the value that the | |
6dddc817 DE |
205 | type will be extracted from. Returns EXT_LANG_BT_ERROR on error, with |
206 | any GDB exceptions converted to a Python exception, or EXT_LANG_BT_OK on | |
1e611234 PM |
207 | success. */ |
208 | ||
6dddc817 | 209 | static enum ext_lang_bt_status |
1e611234 PM |
210 | py_print_type (struct ui_out *out, struct value *val) |
211 | { | |
1e611234 | 212 | |
492d29ea | 213 | TRY |
1e611234 | 214 | { |
1e611234 PM |
215 | struct ui_file *stb; |
216 | struct cleanup *cleanup; | |
217 | ||
218 | stb = mem_fileopen (); | |
219 | cleanup = make_cleanup_ui_file_delete (stb); | |
78cc6c2d | 220 | check_typedef (value_type (val)); |
1e611234 | 221 | type_print (value_type (val), "", stb, -1); |
112e8700 | 222 | out->field_stream ("type", stb); |
1e611234 PM |
223 | do_cleanups (cleanup); |
224 | } | |
492d29ea | 225 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
226 | { |
227 | gdbpy_convert_exception (except); | |
6dddc817 | 228 | return EXT_LANG_BT_ERROR; |
1e611234 | 229 | } |
492d29ea | 230 | END_CATCH |
1e611234 | 231 | |
6dddc817 | 232 | return EXT_LANG_BT_OK; |
1e611234 PM |
233 | } |
234 | ||
235 | /* Helper function which outputs a value to an output field in a | |
236 | stream. OUT is the ui-out structure the value will be output to, | |
237 | VAL is the value that will be printed, OPTS contains the value | |
238 | printing options, ARGS_TYPE is an enumerator describing the | |
239 | argument format, and LANGUAGE is the language_defn that the value | |
6dddc817 DE |
240 | will be printed with. Returns EXT_LANG_BT_ERROR on error, with any GDB |
241 | exceptions converted to a Python exception, or EXT_LANG_BT_OK on | |
1e611234 PM |
242 | success. */ |
243 | ||
6dddc817 | 244 | static enum ext_lang_bt_status |
1e611234 PM |
245 | py_print_value (struct ui_out *out, struct value *val, |
246 | const struct value_print_options *opts, | |
247 | int indent, | |
6dddc817 | 248 | enum ext_lang_frame_args args_type, |
1e611234 PM |
249 | const struct language_defn *language) |
250 | { | |
251 | int should_print = 0; | |
1e611234 PM |
252 | |
253 | /* MI does not print certain values, differentiated by type, | |
254 | depending on what ARGS_TYPE indicates. Test type against option. | |
255 | For CLI print all values. */ | |
256 | if (args_type == MI_PRINT_SIMPLE_VALUES | |
257 | || args_type == MI_PRINT_ALL_VALUES) | |
258 | { | |
259 | struct type *type = NULL; | |
260 | ||
492d29ea | 261 | TRY |
1e611234 PM |
262 | { |
263 | type = check_typedef (value_type (val)); | |
264 | } | |
492d29ea | 265 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
266 | { |
267 | gdbpy_convert_exception (except); | |
6dddc817 | 268 | return EXT_LANG_BT_ERROR; |
1e611234 | 269 | } |
492d29ea | 270 | END_CATCH |
1e611234 PM |
271 | |
272 | if (args_type == MI_PRINT_ALL_VALUES) | |
273 | should_print = 1; | |
274 | else if (args_type == MI_PRINT_SIMPLE_VALUES | |
275 | && TYPE_CODE (type) != TYPE_CODE_ARRAY | |
276 | && TYPE_CODE (type) != TYPE_CODE_STRUCT | |
277 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
278 | should_print = 1; | |
279 | } | |
280 | else if (args_type != NO_VALUES) | |
281 | should_print = 1; | |
282 | ||
283 | if (should_print) | |
284 | { | |
492d29ea | 285 | TRY |
1e611234 PM |
286 | { |
287 | struct ui_file *stb; | |
288 | struct cleanup *cleanup; | |
289 | ||
290 | stb = mem_fileopen (); | |
291 | cleanup = make_cleanup_ui_file_delete (stb); | |
292 | common_val_print (val, stb, indent, opts, language); | |
112e8700 | 293 | out->field_stream ("value", stb); |
1e611234 PM |
294 | do_cleanups (cleanup); |
295 | } | |
492d29ea | 296 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
297 | { |
298 | gdbpy_convert_exception (except); | |
6dddc817 | 299 | return EXT_LANG_BT_ERROR; |
1e611234 | 300 | } |
492d29ea | 301 | END_CATCH |
1e611234 PM |
302 | } |
303 | ||
6dddc817 | 304 | return EXT_LANG_BT_OK; |
1e611234 PM |
305 | } |
306 | ||
307 | /* Helper function to call a Python method and extract an iterator | |
308 | from the result. If the function returns anything but an iterator | |
309 | the exception is preserved and NULL is returned. FILTER is the | |
310 | Python object to call, and FUNC is the name of the method. Returns | |
311 | a PyObject, or NULL on error with the appropriate exception set. | |
312 | This function can return an iterator, or NULL. */ | |
313 | ||
314 | static PyObject * | |
315 | get_py_iter_from_func (PyObject *filter, char *func) | |
316 | { | |
317 | if (PyObject_HasAttrString (filter, func)) | |
318 | { | |
319 | PyObject *result = PyObject_CallMethod (filter, func, NULL); | |
320 | ||
321 | if (result != NULL) | |
322 | { | |
323 | if (result == Py_None) | |
324 | { | |
325 | return result; | |
326 | } | |
327 | else | |
328 | { | |
329 | PyObject *iterator = PyObject_GetIter (result); | |
330 | ||
331 | Py_DECREF (result); | |
332 | return iterator; | |
333 | } | |
334 | } | |
335 | } | |
336 | else | |
337 | Py_RETURN_NONE; | |
338 | ||
339 | return NULL; | |
340 | } | |
341 | ||
342 | /* Helper function to output a single frame argument and value to an | |
343 | output stream. This function will account for entry values if the | |
344 | FV parameter is populated, the frame argument has entry values | |
345 | associated with them, and the appropriate "set entry-value" | |
346 | options are set. Will output in CLI or MI like format depending | |
347 | on the type of output stream detected. OUT is the output stream, | |
348 | SYM_NAME is the name of the symbol. If SYM_NAME is populated then | |
349 | it must have an accompanying value in the parameter FV. FA is a | |
350 | frame argument structure. If FA is populated, both SYM_NAME and | |
351 | FV are ignored. OPTS contains the value printing options, | |
352 | ARGS_TYPE is an enumerator describing the argument format, | |
353 | PRINT_ARGS_FIELD is a flag which indicates if we output "ARGS=1" | |
354 | in MI output in commands where both arguments and locals are | |
6dddc817 DE |
355 | printed. Returns EXT_LANG_BT_ERROR on error, with any GDB exceptions |
356 | converted to a Python exception, or EXT_LANG_BT_OK on success. */ | |
1e611234 | 357 | |
6dddc817 | 358 | static enum ext_lang_bt_status |
1e611234 PM |
359 | py_print_single_arg (struct ui_out *out, |
360 | const char *sym_name, | |
361 | struct frame_arg *fa, | |
362 | struct value *fv, | |
363 | const struct value_print_options *opts, | |
6dddc817 | 364 | enum ext_lang_frame_args args_type, |
1e611234 PM |
365 | int print_args_field, |
366 | const struct language_defn *language) | |
367 | { | |
368 | struct value *val; | |
c75bd3a2 | 369 | enum ext_lang_bt_status retval = EXT_LANG_BT_OK; |
1e611234 PM |
370 | |
371 | if (fa != NULL) | |
372 | { | |
c75bd3a2 JK |
373 | if (fa->val == NULL && fa->error == NULL) |
374 | return EXT_LANG_BT_OK; | |
1e611234 PM |
375 | language = language_def (SYMBOL_LANGUAGE (fa->sym)); |
376 | val = fa->val; | |
377 | } | |
378 | else | |
379 | val = fv; | |
380 | ||
492d29ea | 381 | TRY |
1e611234 PM |
382 | { |
383 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
384 | ||
385 | /* MI has varying rules for tuples, but generally if there is only | |
386 | one element in each item in the list, do not start a tuple. The | |
387 | exception is -stack-list-variables which emits an ARGS="1" field | |
388 | if the value is a frame argument. This is denoted in this | |
389 | function with PRINT_ARGS_FIELD which is flag from the caller to | |
390 | emit the ARGS field. */ | |
112e8700 | 391 | if (out->is_mi_like_p ()) |
1e611234 PM |
392 | { |
393 | if (print_args_field || args_type != NO_VALUES) | |
394 | make_cleanup_ui_out_tuple_begin_end (out, NULL); | |
395 | } | |
396 | ||
397 | annotate_arg_begin (); | |
398 | ||
399 | /* If frame argument is populated, check for entry-values and the | |
400 | entry value options. */ | |
401 | if (fa != NULL) | |
402 | { | |
403 | struct ui_file *stb; | |
404 | ||
405 | stb = mem_fileopen (); | |
406 | make_cleanup_ui_file_delete (stb); | |
407 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (fa->sym), | |
408 | SYMBOL_LANGUAGE (fa->sym), | |
409 | DMGL_PARAMS | DMGL_ANSI); | |
410 | if (fa->entry_kind == print_entry_values_compact) | |
411 | { | |
412 | fputs_filtered ("=", stb); | |
413 | ||
414 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (fa->sym), | |
415 | SYMBOL_LANGUAGE (fa->sym), | |
416 | DMGL_PARAMS | DMGL_ANSI); | |
417 | } | |
418 | if (fa->entry_kind == print_entry_values_only | |
419 | || fa->entry_kind == print_entry_values_compact) | |
420 | { | |
421 | fputs_filtered ("@entry", stb); | |
422 | } | |
112e8700 | 423 | out->field_stream ("name", stb); |
1e611234 PM |
424 | } |
425 | else | |
426 | /* Otherwise, just output the name. */ | |
112e8700 | 427 | out->field_string ("name", sym_name); |
1e611234 PM |
428 | |
429 | annotate_arg_name_end (); | |
430 | ||
112e8700 SM |
431 | if (! out->is_mi_like_p ()) |
432 | out->text ("="); | |
1e611234 PM |
433 | |
434 | if (print_args_field) | |
112e8700 | 435 | out->field_int ("arg", 1); |
1e611234 PM |
436 | |
437 | /* For MI print the type, but only for simple values. This seems | |
438 | weird, but this is how MI choose to format the various output | |
439 | types. */ | |
c75bd3a2 | 440 | if (args_type == MI_PRINT_SIMPLE_VALUES && val != NULL) |
1e611234 | 441 | { |
6dddc817 | 442 | if (py_print_type (out, val) == EXT_LANG_BT_ERROR) |
1e611234 | 443 | { |
c75bd3a2 | 444 | retval = EXT_LANG_BT_ERROR; |
1e611234 | 445 | do_cleanups (cleanups); |
1e611234 PM |
446 | } |
447 | } | |
448 | ||
9c6595ab | 449 | if (retval != EXT_LANG_BT_ERROR) |
1e611234 | 450 | { |
9c6595ab PA |
451 | if (val != NULL) |
452 | annotate_arg_value (value_type (val)); | |
453 | ||
454 | /* If the output is to the CLI, and the user option "set print | |
455 | frame-arguments" is set to none, just output "...". */ | |
112e8700 SM |
456 | if (! out->is_mi_like_p () && args_type == NO_VALUES) |
457 | out->field_string ("value", "..."); | |
9c6595ab | 458 | else |
1e611234 | 459 | { |
9c6595ab PA |
460 | /* Otherwise, print the value for both MI and the CLI, except |
461 | for the case of MI_PRINT_NO_VALUES. */ | |
462 | if (args_type != NO_VALUES) | |
1e611234 | 463 | { |
9c6595ab PA |
464 | if (val == NULL) |
465 | { | |
466 | gdb_assert (fa != NULL && fa->error != NULL); | |
112e8700 | 467 | out->field_fmt ("value", |
9c6595ab PA |
468 | _("<error reading variable: %s>"), |
469 | fa->error); | |
470 | } | |
471 | else if (py_print_value (out, val, opts, 0, args_type, language) | |
472 | == EXT_LANG_BT_ERROR) | |
473 | retval = EXT_LANG_BT_ERROR; | |
1e611234 PM |
474 | } |
475 | } | |
1e611234 | 476 | |
9c6595ab PA |
477 | do_cleanups (cleanups); |
478 | } | |
1e611234 | 479 | } |
492d29ea PA |
480 | CATCH (except, RETURN_MASK_ERROR) |
481 | { | |
482 | gdbpy_convert_exception (except); | |
483 | } | |
484 | END_CATCH | |
1e611234 | 485 | |
c75bd3a2 | 486 | return retval; |
1e611234 PM |
487 | } |
488 | ||
489 | /* Helper function to loop over frame arguments provided by the | |
490 | "frame_arguments" Python API. Elements in the iterator must | |
491 | conform to the "Symbol Value" interface. ITER is the Python | |
492 | iterable object, OUT is the output stream, ARGS_TYPE is an | |
493 | enumerator describing the argument format, PRINT_ARGS_FIELD is a | |
494 | flag which indicates if we output "ARGS=1" in MI output in commands | |
495 | where both arguments and locals are printed, and FRAME is the | |
6dddc817 DE |
496 | backing frame. Returns EXT_LANG_BT_ERROR on error, with any GDB |
497 | exceptions converted to a Python exception, or EXT_LANG_BT_OK on | |
1e611234 PM |
498 | success. */ |
499 | ||
6dddc817 | 500 | static enum ext_lang_bt_status |
1e611234 PM |
501 | enumerate_args (PyObject *iter, |
502 | struct ui_out *out, | |
6dddc817 | 503 | enum ext_lang_frame_args args_type, |
1e611234 PM |
504 | int print_args_field, |
505 | struct frame_info *frame) | |
506 | { | |
507 | PyObject *item; | |
508 | struct value_print_options opts; | |
1e611234 PM |
509 | |
510 | get_user_print_options (&opts); | |
511 | ||
512 | if (args_type == CLI_SCALAR_VALUES) | |
513 | { | |
514 | /* True in "summary" mode, false otherwise. */ | |
515 | opts.summary = 1; | |
516 | } | |
517 | ||
518 | opts.deref_ref = 1; | |
519 | ||
492d29ea | 520 | TRY |
1e611234 PM |
521 | { |
522 | annotate_frame_args (); | |
523 | } | |
492d29ea | 524 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
525 | { |
526 | gdbpy_convert_exception (except); | |
527 | goto error; | |
528 | } | |
492d29ea | 529 | END_CATCH |
1e611234 PM |
530 | |
531 | /* Collect the first argument outside of the loop, so output of | |
532 | commas in the argument output is correct. At the end of the | |
533 | loop block collect another item from the iterator, and, if it is | |
534 | not null emit a comma. */ | |
535 | item = PyIter_Next (iter); | |
536 | if (item == NULL && PyErr_Occurred ()) | |
537 | goto error; | |
538 | ||
539 | while (item) | |
540 | { | |
541 | const struct language_defn *language; | |
9b972014 | 542 | gdb::unique_xmalloc_ptr<char> sym_name; |
1e611234 | 543 | struct symbol *sym; |
63e43d3a | 544 | struct block *sym_block; |
1e611234 | 545 | struct value *val; |
6dddc817 | 546 | enum ext_lang_bt_status success = EXT_LANG_BT_ERROR; |
1e611234 | 547 | |
63e43d3a | 548 | success = extract_sym (item, &sym_name, &sym, &sym_block, &language); |
6dddc817 | 549 | if (success == EXT_LANG_BT_ERROR) |
1e611234 PM |
550 | { |
551 | Py_DECREF (item); | |
552 | goto error; | |
553 | } | |
554 | ||
555 | success = extract_value (item, &val); | |
6dddc817 | 556 | if (success == EXT_LANG_BT_ERROR) |
1e611234 | 557 | { |
1e611234 PM |
558 | Py_DECREF (item); |
559 | goto error; | |
560 | } | |
561 | ||
562 | Py_DECREF (item); | |
563 | item = NULL; | |
564 | ||
112e8700 | 565 | if (sym && out->is_mi_like_p () |
1e611234 | 566 | && ! mi_should_print (sym, MI_PRINT_ARGS)) |
9b972014 | 567 | continue; |
1e611234 PM |
568 | |
569 | /* If the object did not provide a value, read it using | |
570 | read_frame_args and account for entry values, if any. */ | |
571 | if (val == NULL) | |
572 | { | |
573 | struct frame_arg arg, entryarg; | |
574 | ||
575 | /* If there is no value, and also no symbol, set error and | |
576 | exit. */ | |
577 | if (sym == NULL) | |
578 | { | |
579 | PyErr_SetString (PyExc_RuntimeError, | |
580 | _("No symbol or value provided.")); | |
1e611234 PM |
581 | goto error; |
582 | } | |
583 | ||
492d29ea | 584 | TRY |
1e611234 PM |
585 | { |
586 | read_frame_arg (sym, frame, &arg, &entryarg); | |
587 | } | |
492d29ea | 588 | CATCH (except, RETURN_MASK_ALL) |
1e611234 | 589 | { |
1e611234 PM |
590 | gdbpy_convert_exception (except); |
591 | goto error; | |
592 | } | |
492d29ea | 593 | END_CATCH |
1e611234 PM |
594 | |
595 | /* The object has not provided a value, so this is a frame | |
596 | argument to be read by GDB. In this case we have to | |
597 | account for entry-values. */ | |
598 | ||
599 | if (arg.entry_kind != print_entry_values_only) | |
600 | { | |
601 | if (py_print_single_arg (out, NULL, &arg, | |
602 | NULL, &opts, | |
603 | args_type, | |
604 | print_args_field, | |
6dddc817 | 605 | NULL) == EXT_LANG_BT_ERROR) |
1e611234 PM |
606 | { |
607 | xfree (arg.error); | |
608 | xfree (entryarg.error); | |
1e611234 PM |
609 | goto error; |
610 | } | |
611 | } | |
612 | ||
613 | if (entryarg.entry_kind != print_entry_values_no) | |
614 | { | |
615 | if (arg.entry_kind != print_entry_values_only) | |
616 | { | |
492d29ea | 617 | TRY |
1e611234 | 618 | { |
112e8700 SM |
619 | out->text (", "); |
620 | out->wrap_hint (" "); | |
1e611234 | 621 | } |
492d29ea | 622 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
623 | { |
624 | xfree (arg.error); | |
625 | xfree (entryarg.error); | |
1e611234 PM |
626 | gdbpy_convert_exception (except); |
627 | goto error; | |
628 | } | |
492d29ea | 629 | END_CATCH |
1e611234 PM |
630 | } |
631 | ||
6dddc817 DE |
632 | if (py_print_single_arg (out, NULL, &entryarg, NULL, &opts, |
633 | args_type, print_args_field, NULL) | |
634 | == EXT_LANG_BT_ERROR) | |
1e611234 PM |
635 | { |
636 | xfree (arg.error); | |
637 | xfree (entryarg.error); | |
1e611234 PM |
638 | goto error; |
639 | } | |
640 | } | |
641 | ||
642 | xfree (arg.error); | |
643 | xfree (entryarg.error); | |
644 | } | |
645 | else | |
646 | { | |
647 | /* If the object has provided a value, we just print that. */ | |
648 | if (val != NULL) | |
649 | { | |
9b972014 | 650 | if (py_print_single_arg (out, sym_name.get (), NULL, val, &opts, |
1e611234 | 651 | args_type, print_args_field, |
6dddc817 | 652 | language) == EXT_LANG_BT_ERROR) |
9b972014 | 653 | goto error; |
1e611234 PM |
654 | } |
655 | } | |
656 | ||
1e611234 PM |
657 | /* Collect the next item from the iterator. If |
658 | this is the last item, do not print the | |
659 | comma. */ | |
660 | item = PyIter_Next (iter); | |
661 | if (item != NULL) | |
662 | { | |
492d29ea | 663 | TRY |
1e611234 | 664 | { |
112e8700 | 665 | out->text (", "); |
1e611234 | 666 | } |
492d29ea | 667 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
668 | { |
669 | Py_DECREF (item); | |
670 | gdbpy_convert_exception (except); | |
671 | goto error; | |
672 | } | |
492d29ea | 673 | END_CATCH |
1e611234 PM |
674 | } |
675 | else if (PyErr_Occurred ()) | |
676 | goto error; | |
677 | ||
492d29ea | 678 | TRY |
1e611234 PM |
679 | { |
680 | annotate_arg_end (); | |
681 | } | |
492d29ea | 682 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
683 | { |
684 | Py_DECREF (item); | |
685 | gdbpy_convert_exception (except); | |
686 | goto error; | |
687 | } | |
492d29ea | 688 | END_CATCH |
1e611234 PM |
689 | } |
690 | ||
6dddc817 | 691 | return EXT_LANG_BT_OK; |
1e611234 PM |
692 | |
693 | error: | |
6dddc817 | 694 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
695 | } |
696 | ||
697 | ||
698 | /* Helper function to loop over variables provided by the | |
699 | "frame_locals" Python API. Elements in the iterable must conform | |
700 | to the "Symbol Value" interface. ITER is the Python iterable | |
701 | object, OUT is the output stream, INDENT is whether we should | |
702 | indent the output (for CLI), ARGS_TYPE is an enumerator describing | |
703 | the argument format, PRINT_ARGS_FIELD is flag which indicates | |
704 | whether to output the ARGS field in the case of | |
705 | -stack-list-variables and FRAME is the backing frame. Returns | |
6dddc817 DE |
706 | EXT_LANG_BT_ERROR on error, with any GDB exceptions converted to a Python |
707 | exception, or EXT_LANG_BT_OK on success. */ | |
1e611234 | 708 | |
6dddc817 | 709 | static enum ext_lang_bt_status |
1e611234 PM |
710 | enumerate_locals (PyObject *iter, |
711 | struct ui_out *out, | |
712 | int indent, | |
6dddc817 | 713 | enum ext_lang_frame_args args_type, |
1e611234 PM |
714 | int print_args_field, |
715 | struct frame_info *frame) | |
716 | { | |
717 | PyObject *item; | |
718 | struct value_print_options opts; | |
719 | ||
720 | get_user_print_options (&opts); | |
721 | opts.deref_ref = 1; | |
722 | ||
723 | while ((item = PyIter_Next (iter))) | |
724 | { | |
725 | const struct language_defn *language; | |
9b972014 | 726 | gdb::unique_xmalloc_ptr<char> sym_name; |
1e611234 | 727 | struct value *val; |
6dddc817 | 728 | enum ext_lang_bt_status success = EXT_LANG_BT_ERROR; |
1e611234 | 729 | struct symbol *sym; |
63e43d3a | 730 | struct block *sym_block; |
1e611234 PM |
731 | int local_indent = 8 + (8 * indent); |
732 | struct cleanup *locals_cleanups; | |
733 | ||
734 | locals_cleanups = make_cleanup_py_decref (item); | |
735 | ||
63e43d3a | 736 | success = extract_sym (item, &sym_name, &sym, &sym_block, &language); |
6dddc817 | 737 | if (success == EXT_LANG_BT_ERROR) |
1e611234 PM |
738 | { |
739 | do_cleanups (locals_cleanups); | |
740 | goto error; | |
741 | } | |
742 | ||
1e611234 | 743 | success = extract_value (item, &val); |
6dddc817 | 744 | if (success == EXT_LANG_BT_ERROR) |
1e611234 PM |
745 | { |
746 | do_cleanups (locals_cleanups); | |
747 | goto error; | |
748 | } | |
749 | ||
112e8700 | 750 | if (sym != NULL && out->is_mi_like_p () |
1e611234 PM |
751 | && ! mi_should_print (sym, MI_PRINT_LOCALS)) |
752 | { | |
753 | do_cleanups (locals_cleanups); | |
754 | continue; | |
755 | } | |
756 | ||
757 | /* If the object did not provide a value, read it. */ | |
758 | if (val == NULL) | |
759 | { | |
492d29ea | 760 | TRY |
1e611234 | 761 | { |
63e43d3a | 762 | val = read_var_value (sym, sym_block, frame); |
1e611234 | 763 | } |
492d29ea | 764 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
765 | { |
766 | gdbpy_convert_exception (except); | |
767 | do_cleanups (locals_cleanups); | |
768 | goto error; | |
769 | } | |
492d29ea | 770 | END_CATCH |
1e611234 PM |
771 | } |
772 | ||
773 | /* With PRINT_NO_VALUES, MI does not emit a tuple normally as | |
774 | each output contains only one field. The exception is | |
775 | -stack-list-variables, which always provides a tuple. */ | |
112e8700 | 776 | if (out->is_mi_like_p ()) |
1e611234 PM |
777 | { |
778 | if (print_args_field || args_type != NO_VALUES) | |
779 | make_cleanup_ui_out_tuple_begin_end (out, NULL); | |
780 | } | |
492d29ea | 781 | TRY |
1e611234 | 782 | { |
112e8700 | 783 | if (! out->is_mi_like_p ()) |
1e611234 PM |
784 | { |
785 | /* If the output is not MI we indent locals. */ | |
112e8700 | 786 | out->spaces (local_indent); |
1e611234 PM |
787 | } |
788 | ||
112e8700 | 789 | out->field_string ("name", sym_name.get ()); |
1e611234 | 790 | |
112e8700 SM |
791 | if (! out->is_mi_like_p ()) |
792 | out->text (" = "); | |
1e611234 | 793 | } |
492d29ea | 794 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
795 | { |
796 | gdbpy_convert_exception (except); | |
797 | do_cleanups (locals_cleanups); | |
798 | goto error; | |
799 | } | |
492d29ea | 800 | END_CATCH |
1e611234 PM |
801 | |
802 | if (args_type == MI_PRINT_SIMPLE_VALUES) | |
803 | { | |
6dddc817 | 804 | if (py_print_type (out, val) == EXT_LANG_BT_ERROR) |
1e611234 PM |
805 | { |
806 | do_cleanups (locals_cleanups); | |
807 | goto error; | |
808 | } | |
809 | } | |
810 | ||
811 | /* CLI always prints values for locals. MI uses the | |
812 | simple/no/all system. */ | |
112e8700 | 813 | if (! out->is_mi_like_p ()) |
1e611234 PM |
814 | { |
815 | int val_indent = (indent + 1) * 4; | |
816 | ||
817 | if (py_print_value (out, val, &opts, val_indent, args_type, | |
6dddc817 | 818 | language) == EXT_LANG_BT_ERROR) |
1e611234 PM |
819 | { |
820 | do_cleanups (locals_cleanups); | |
821 | goto error; | |
822 | } | |
823 | } | |
824 | else | |
825 | { | |
826 | if (args_type != NO_VALUES) | |
827 | { | |
828 | if (py_print_value (out, val, &opts, 0, args_type, | |
6dddc817 | 829 | language) == EXT_LANG_BT_ERROR) |
1e611234 PM |
830 | { |
831 | do_cleanups (locals_cleanups); | |
832 | goto error; | |
833 | } | |
834 | } | |
835 | } | |
836 | ||
837 | do_cleanups (locals_cleanups); | |
838 | ||
492d29ea | 839 | TRY |
1e611234 | 840 | { |
112e8700 | 841 | out->text ("\n"); |
1e611234 | 842 | } |
492d29ea | 843 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
844 | { |
845 | gdbpy_convert_exception (except); | |
846 | goto error; | |
847 | } | |
492d29ea | 848 | END_CATCH |
1e611234 PM |
849 | } |
850 | ||
851 | if (item == NULL && PyErr_Occurred ()) | |
852 | goto error; | |
853 | ||
6dddc817 | 854 | return EXT_LANG_BT_OK; |
1e611234 PM |
855 | |
856 | error: | |
6dddc817 | 857 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
858 | } |
859 | ||
6dddc817 DE |
860 | /* Helper function for -stack-list-variables. Returns EXT_LANG_BT_ERROR on |
861 | error, or EXT_LANG_BT_OK on success. */ | |
1e611234 | 862 | |
6dddc817 | 863 | static enum ext_lang_bt_status |
1e611234 PM |
864 | py_mi_print_variables (PyObject *filter, struct ui_out *out, |
865 | struct value_print_options *opts, | |
6dddc817 | 866 | enum ext_lang_frame_args args_type, |
1e611234 PM |
867 | struct frame_info *frame) |
868 | { | |
869 | struct cleanup *old_chain; | |
870 | PyObject *args_iter; | |
871 | PyObject *locals_iter; | |
872 | ||
873 | args_iter = get_py_iter_from_func (filter, "frame_args"); | |
874 | old_chain = make_cleanup_py_xdecref (args_iter); | |
875 | if (args_iter == NULL) | |
876 | goto error; | |
877 | ||
878 | locals_iter = get_py_iter_from_func (filter, "frame_locals"); | |
879 | if (locals_iter == NULL) | |
880 | goto error; | |
881 | ||
882 | make_cleanup_py_decref (locals_iter); | |
883 | make_cleanup_ui_out_list_begin_end (out, "variables"); | |
884 | ||
885 | if (args_iter != Py_None) | |
6dddc817 DE |
886 | if (enumerate_args (args_iter, out, args_type, 1, frame) |
887 | == EXT_LANG_BT_ERROR) | |
1e611234 PM |
888 | goto error; |
889 | ||
890 | if (locals_iter != Py_None) | |
891 | if (enumerate_locals (locals_iter, out, 1, args_type, 1, frame) | |
6dddc817 | 892 | == EXT_LANG_BT_ERROR) |
1e611234 PM |
893 | goto error; |
894 | ||
895 | do_cleanups (old_chain); | |
6dddc817 | 896 | return EXT_LANG_BT_OK; |
1e611234 PM |
897 | |
898 | error: | |
899 | do_cleanups (old_chain); | |
6dddc817 | 900 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
901 | } |
902 | ||
903 | /* Helper function for printing locals. This function largely just | |
904 | creates the wrapping tuple, and calls enumerate_locals. Returns | |
6dddc817 | 905 | EXT_LANG_BT_ERROR on error, or EXT_LANG_BT_OK on success. */ |
1e611234 | 906 | |
6dddc817 | 907 | static enum ext_lang_bt_status |
1e611234 PM |
908 | py_print_locals (PyObject *filter, |
909 | struct ui_out *out, | |
6dddc817 | 910 | enum ext_lang_frame_args args_type, |
1e611234 PM |
911 | int indent, |
912 | struct frame_info *frame) | |
913 | { | |
914 | PyObject *locals_iter = get_py_iter_from_func (filter, | |
915 | "frame_locals"); | |
916 | struct cleanup *old_chain = make_cleanup_py_xdecref (locals_iter); | |
917 | ||
918 | if (locals_iter == NULL) | |
919 | goto locals_error; | |
920 | ||
921 | make_cleanup_ui_out_list_begin_end (out, "locals"); | |
922 | ||
923 | if (locals_iter != Py_None) | |
924 | if (enumerate_locals (locals_iter, out, indent, args_type, | |
6dddc817 | 925 | 0, frame) == EXT_LANG_BT_ERROR) |
1e611234 PM |
926 | goto locals_error; |
927 | ||
928 | do_cleanups (old_chain); | |
6dddc817 | 929 | return EXT_LANG_BT_OK; |
1e611234 PM |
930 | |
931 | locals_error: | |
932 | do_cleanups (old_chain); | |
6dddc817 | 933 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
934 | } |
935 | ||
936 | /* Helper function for printing frame arguments. This function | |
937 | largely just creates the wrapping tuple, and calls enumerate_args. | |
6dddc817 DE |
938 | Returns EXT_LANG_BT_ERROR on error, with any GDB exceptions converted to |
939 | a Python exception, or EXT_LANG_BT_OK on success. */ | |
1e611234 | 940 | |
6dddc817 | 941 | static enum ext_lang_bt_status |
1e611234 PM |
942 | py_print_args (PyObject *filter, |
943 | struct ui_out *out, | |
6dddc817 | 944 | enum ext_lang_frame_args args_type, |
1e611234 PM |
945 | struct frame_info *frame) |
946 | { | |
947 | PyObject *args_iter = get_py_iter_from_func (filter, "frame_args"); | |
948 | struct cleanup *old_chain = make_cleanup_py_xdecref (args_iter); | |
1e611234 PM |
949 | |
950 | if (args_iter == NULL) | |
951 | goto args_error; | |
952 | ||
953 | make_cleanup_ui_out_list_begin_end (out, "args"); | |
954 | ||
492d29ea | 955 | TRY |
1e611234 PM |
956 | { |
957 | annotate_frame_args (); | |
112e8700 SM |
958 | if (! out->is_mi_like_p ()) |
959 | out->text (" ("); | |
1e611234 | 960 | } |
492d29ea | 961 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
962 | { |
963 | gdbpy_convert_exception (except); | |
964 | goto args_error; | |
965 | } | |
492d29ea | 966 | END_CATCH |
1e611234 PM |
967 | |
968 | if (args_iter != Py_None) | |
6dddc817 DE |
969 | if (enumerate_args (args_iter, out, args_type, 0, frame) |
970 | == EXT_LANG_BT_ERROR) | |
1e611234 PM |
971 | goto args_error; |
972 | ||
492d29ea | 973 | TRY |
1e611234 | 974 | { |
112e8700 SM |
975 | if (! out->is_mi_like_p ()) |
976 | out->text (")"); | |
1e611234 | 977 | } |
492d29ea | 978 | CATCH (except, RETURN_MASK_ALL) |
1e611234 PM |
979 | { |
980 | gdbpy_convert_exception (except); | |
981 | goto args_error; | |
982 | } | |
492d29ea | 983 | END_CATCH |
1e611234 PM |
984 | |
985 | do_cleanups (old_chain); | |
6dddc817 | 986 | return EXT_LANG_BT_OK; |
1e611234 PM |
987 | |
988 | args_error: | |
989 | do_cleanups (old_chain); | |
6dddc817 | 990 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
991 | } |
992 | ||
993 | /* Print a single frame to the designated output stream, detecting | |
994 | whether the output is MI or console, and formatting the output | |
995 | according to the conventions of that protocol. FILTER is the | |
996 | frame-filter associated with this frame. FLAGS is an integer | |
997 | describing the various print options. The FLAGS variables is | |
998 | described in "apply_frame_filter" function. ARGS_TYPE is an | |
999 | enumerator describing the argument format. OUT is the output | |
1000 | stream to print, INDENT is the level of indention for this frame | |
1001 | (in the case of elided frames), and LEVELS_PRINTED is a hash-table | |
1002 | containing all the frames level that have already been printed. | |
1003 | If a frame level has been printed, do not print it again (in the | |
6dddc817 DE |
1004 | case of elided frames). Returns EXT_LANG_BT_ERROR on error, with any |
1005 | GDB exceptions converted to a Python exception, or EXT_LANG_BT_COMPLETED | |
b99bf4e3 | 1006 | on success. It can also throw an exception RETURN_QUIT. */ |
1e611234 | 1007 | |
6dddc817 DE |
1008 | static enum ext_lang_bt_status |
1009 | py_print_frame (PyObject *filter, int flags, | |
1010 | enum ext_lang_frame_args args_type, | |
1e611234 PM |
1011 | struct ui_out *out, int indent, htab_t levels_printed) |
1012 | { | |
1013 | int has_addr = 0; | |
1014 | CORE_ADDR address = 0; | |
1015 | struct gdbarch *gdbarch = NULL; | |
1016 | struct frame_info *frame = NULL; | |
b99bf4e3 | 1017 | struct cleanup *cleanup_stack; |
1e611234 | 1018 | struct value_print_options opts; |
34019068 | 1019 | PyObject *py_inf_frame; |
1e611234 | 1020 | int print_level, print_frame_info, print_args, print_locals; |
9b972014 | 1021 | gdb::unique_xmalloc_ptr<char> function_to_free; |
1e611234 PM |
1022 | |
1023 | /* Extract print settings from FLAGS. */ | |
1024 | print_level = (flags & PRINT_LEVEL) ? 1 : 0; | |
1025 | print_frame_info = (flags & PRINT_FRAME_INFO) ? 1 : 0; | |
1026 | print_args = (flags & PRINT_ARGS) ? 1 : 0; | |
1027 | print_locals = (flags & PRINT_LOCALS) ? 1 : 0; | |
1028 | ||
1029 | get_user_print_options (&opts); | |
1030 | ||
1031 | /* Get the underlying frame. This is needed to determine GDB | |
1032 | architecture, and also, in the cases of frame variables/arguments to | |
1033 | read them if they returned filter object requires us to do so. */ | |
1034 | py_inf_frame = PyObject_CallMethod (filter, "inferior_frame", NULL); | |
1035 | if (py_inf_frame == NULL) | |
b99bf4e3 | 1036 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
1037 | |
1038 | frame = frame_object_to_frame_info (py_inf_frame);; | |
1039 | ||
1040 | Py_DECREF (py_inf_frame); | |
1041 | ||
1042 | if (frame == NULL) | |
b99bf4e3 | 1043 | return EXT_LANG_BT_ERROR; |
1e611234 | 1044 | |
492d29ea | 1045 | TRY |
1e611234 PM |
1046 | { |
1047 | gdbarch = get_frame_arch (frame); | |
1048 | } | |
492d29ea | 1049 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
1050 | { |
1051 | gdbpy_convert_exception (except); | |
800eb1ce | 1052 | return EXT_LANG_BT_ERROR; |
1e611234 | 1053 | } |
492d29ea | 1054 | END_CATCH |
1e611234 | 1055 | |
1e611234 PM |
1056 | /* stack-list-variables. */ |
1057 | if (print_locals && print_args && ! print_frame_info) | |
1058 | { | |
1059 | if (py_mi_print_variables (filter, out, &opts, | |
6dddc817 | 1060 | args_type, frame) == EXT_LANG_BT_ERROR) |
b99bf4e3 | 1061 | return EXT_LANG_BT_ERROR; |
34019068 | 1062 | return EXT_LANG_BT_COMPLETED; |
1e611234 PM |
1063 | } |
1064 | ||
b99bf4e3 JK |
1065 | cleanup_stack = make_cleanup (null_cleanup, NULL); |
1066 | ||
1e611234 PM |
1067 | /* -stack-list-locals does not require a |
1068 | wrapping frame attribute. */ | |
1069 | if (print_frame_info || (print_args && ! print_locals)) | |
1070 | make_cleanup_ui_out_tuple_begin_end (out, "frame"); | |
1071 | ||
1072 | if (print_frame_info) | |
1073 | { | |
1074 | /* Elided frames are also printed with this function (recursively) | |
1075 | and are printed with indention. */ | |
1076 | if (indent > 0) | |
1077 | { | |
492d29ea | 1078 | TRY |
8d4a54e2 | 1079 | { |
112e8700 | 1080 | out->spaces (indent * 4); |
8d4a54e2 | 1081 | } |
492d29ea | 1082 | CATCH (except, RETURN_MASK_ERROR) |
8d4a54e2 JK |
1083 | { |
1084 | gdbpy_convert_exception (except); | |
800eb1ce JK |
1085 | do_cleanups (cleanup_stack); |
1086 | return EXT_LANG_BT_ERROR; | |
8d4a54e2 | 1087 | } |
492d29ea | 1088 | END_CATCH |
1e611234 PM |
1089 | } |
1090 | ||
1091 | /* The address is required for frame annotations, and also for | |
1092 | address printing. */ | |
1093 | if (PyObject_HasAttrString (filter, "address")) | |
1094 | { | |
1095 | PyObject *paddr = PyObject_CallMethod (filter, "address", NULL); | |
34019068 JK |
1096 | |
1097 | if (paddr == NULL) | |
800eb1ce JK |
1098 | { |
1099 | do_cleanups (cleanup_stack); | |
1100 | return EXT_LANG_BT_ERROR; | |
1101 | } | |
34019068 JK |
1102 | |
1103 | if (paddr != Py_None) | |
1e611234 | 1104 | { |
30a7bb83 TT |
1105 | if (get_addr_from_python (paddr, &address) < 0) |
1106 | { | |
1107 | Py_DECREF (paddr); | |
1108 | do_cleanups (cleanup_stack); | |
1109 | return EXT_LANG_BT_ERROR; | |
1110 | } | |
1111 | ||
34019068 | 1112 | has_addr = 1; |
1e611234 | 1113 | } |
34019068 | 1114 | Py_DECREF (paddr); |
1e611234 PM |
1115 | } |
1116 | } | |
1117 | ||
1118 | /* Print frame level. MI does not require the level if | |
1119 | locals/variables only are being printed. */ | |
1120 | if ((print_frame_info || print_args) && print_level) | |
1121 | { | |
1122 | struct frame_info **slot; | |
1123 | int level; | |
1e611234 PM |
1124 | |
1125 | slot = (struct frame_info **) htab_find_slot (levels_printed, | |
1126 | frame, INSERT); | |
492d29ea | 1127 | TRY |
1e611234 PM |
1128 | { |
1129 | level = frame_relative_level (frame); | |
1130 | ||
1131 | /* Check if this frame has already been printed (there are cases | |
1132 | where elided synthetic dummy-frames have to 'borrow' the frame | |
1133 | architecture from the eliding frame. If that is the case, do | |
1134 | not print 'level', but print spaces. */ | |
1135 | if (*slot == frame) | |
112e8700 | 1136 | out->field_skip ("level"); |
1e611234 PM |
1137 | else |
1138 | { | |
1139 | *slot = frame; | |
1140 | annotate_frame_begin (print_level ? level : 0, | |
1141 | gdbarch, address); | |
112e8700 SM |
1142 | out->text ("#"); |
1143 | out->field_fmt_int (2, ui_left, "level", | |
1e611234 PM |
1144 | level); |
1145 | } | |
1146 | } | |
492d29ea | 1147 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
1148 | { |
1149 | gdbpy_convert_exception (except); | |
800eb1ce JK |
1150 | do_cleanups (cleanup_stack); |
1151 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1152 | } |
492d29ea | 1153 | END_CATCH |
1e611234 PM |
1154 | } |
1155 | ||
1156 | if (print_frame_info) | |
1157 | { | |
1158 | /* Print address to the address field. If an address is not provided, | |
1159 | print nothing. */ | |
1160 | if (opts.addressprint && has_addr) | |
1161 | { | |
492d29ea | 1162 | TRY |
1e611234 PM |
1163 | { |
1164 | annotate_frame_address (); | |
112e8700 | 1165 | out->field_core_addr ("addr", gdbarch, address); |
1e611234 | 1166 | annotate_frame_address_end (); |
112e8700 | 1167 | out->text (" in "); |
1e611234 | 1168 | } |
492d29ea | 1169 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
1170 | { |
1171 | gdbpy_convert_exception (except); | |
800eb1ce JK |
1172 | do_cleanups (cleanup_stack); |
1173 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1174 | } |
492d29ea | 1175 | END_CATCH |
1e611234 PM |
1176 | } |
1177 | ||
1178 | /* Print frame function name. */ | |
1179 | if (PyObject_HasAttrString (filter, "function")) | |
1180 | { | |
1181 | PyObject *py_func = PyObject_CallMethod (filter, "function", NULL); | |
b99bf4e3 | 1182 | struct cleanup *py_func_cleanup; |
34019068 | 1183 | const char *function = NULL; |
1e611234 | 1184 | |
34019068 | 1185 | if (py_func == NULL) |
800eb1ce JK |
1186 | { |
1187 | do_cleanups (cleanup_stack); | |
1188 | return EXT_LANG_BT_ERROR; | |
1189 | } | |
b99bf4e3 | 1190 | py_func_cleanup = make_cleanup_py_decref (py_func); |
1e611234 | 1191 | |
34019068 JK |
1192 | if (gdbpy_is_string (py_func)) |
1193 | { | |
9b972014 | 1194 | function_to_free = python_string_to_host_string (py_func); |
1e611234 | 1195 | |
9b972014 | 1196 | if (function_to_free == NULL) |
1e611234 | 1197 | { |
800eb1ce JK |
1198 | do_cleanups (cleanup_stack); |
1199 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1200 | } |
9b972014 TT |
1201 | |
1202 | function = function_to_free.get (); | |
34019068 JK |
1203 | } |
1204 | else if (PyLong_Check (py_func)) | |
1205 | { | |
30a7bb83 | 1206 | CORE_ADDR addr; |
34019068 | 1207 | struct bound_minimal_symbol msymbol; |
1e611234 | 1208 | |
30a7bb83 | 1209 | if (get_addr_from_python (py_func, &addr) < 0) |
800eb1ce JK |
1210 | { |
1211 | do_cleanups (cleanup_stack); | |
1212 | return EXT_LANG_BT_ERROR; | |
1213 | } | |
34019068 JK |
1214 | |
1215 | msymbol = lookup_minimal_symbol_by_pc (addr); | |
1216 | if (msymbol.minsym != NULL) | |
1217 | function = MSYMBOL_PRINT_NAME (msymbol.minsym); | |
1218 | } | |
1219 | else if (py_func != Py_None) | |
1220 | { | |
1221 | PyErr_SetString (PyExc_RuntimeError, | |
1222 | _("FrameDecorator.function: expecting a " \ | |
1223 | "String, integer or None.")); | |
800eb1ce JK |
1224 | do_cleanups (cleanup_stack); |
1225 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1226 | } |
34019068 | 1227 | |
492d29ea | 1228 | TRY |
34019068 JK |
1229 | { |
1230 | annotate_frame_function_name (); | |
1231 | if (function == NULL) | |
112e8700 | 1232 | out->field_skip ("func"); |
34019068 | 1233 | else |
112e8700 | 1234 | out->field_string ("func", function); |
34019068 | 1235 | } |
492d29ea | 1236 | CATCH (except, RETURN_MASK_ERROR) |
34019068 | 1237 | { |
34019068 | 1238 | gdbpy_convert_exception (except); |
800eb1ce JK |
1239 | do_cleanups (cleanup_stack); |
1240 | return EXT_LANG_BT_ERROR; | |
34019068 | 1241 | } |
492d29ea PA |
1242 | END_CATCH |
1243 | ||
b99bf4e3 | 1244 | do_cleanups (py_func_cleanup); |
1e611234 | 1245 | } |
1e611234 PM |
1246 | } |
1247 | ||
1248 | ||
1249 | /* Frame arguments. Check the result, and error if something went | |
1250 | wrong. */ | |
1251 | if (print_args) | |
1252 | { | |
6dddc817 | 1253 | if (py_print_args (filter, out, args_type, frame) == EXT_LANG_BT_ERROR) |
800eb1ce JK |
1254 | { |
1255 | do_cleanups (cleanup_stack); | |
1256 | return EXT_LANG_BT_ERROR; | |
1257 | } | |
1e611234 PM |
1258 | } |
1259 | ||
1260 | /* File name/source/line number information. */ | |
1261 | if (print_frame_info) | |
1262 | { | |
492d29ea | 1263 | TRY |
1e611234 PM |
1264 | { |
1265 | annotate_frame_source_begin (); | |
1266 | } | |
492d29ea | 1267 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
1268 | { |
1269 | gdbpy_convert_exception (except); | |
800eb1ce JK |
1270 | do_cleanups (cleanup_stack); |
1271 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1272 | } |
492d29ea | 1273 | END_CATCH |
1e611234 PM |
1274 | |
1275 | if (PyObject_HasAttrString (filter, "filename")) | |
1276 | { | |
8d4a54e2 | 1277 | PyObject *py_fn = PyObject_CallMethod (filter, "filename", NULL); |
b99bf4e3 | 1278 | struct cleanup *py_fn_cleanup; |
8d4a54e2 | 1279 | |
34019068 | 1280 | if (py_fn == NULL) |
800eb1ce JK |
1281 | { |
1282 | do_cleanups (cleanup_stack); | |
1283 | return EXT_LANG_BT_ERROR; | |
1284 | } | |
b99bf4e3 | 1285 | py_fn_cleanup = make_cleanup_py_decref (py_fn); |
34019068 JK |
1286 | |
1287 | if (py_fn != Py_None) | |
1e611234 | 1288 | { |
9b972014 TT |
1289 | gdb::unique_xmalloc_ptr<char> |
1290 | filename (python_string_to_host_string (py_fn)); | |
1e611234 | 1291 | |
34019068 JK |
1292 | if (filename == NULL) |
1293 | { | |
800eb1ce JK |
1294 | do_cleanups (cleanup_stack); |
1295 | return EXT_LANG_BT_ERROR; | |
34019068 | 1296 | } |
8f28f522 | 1297 | |
492d29ea | 1298 | TRY |
34019068 | 1299 | { |
112e8700 SM |
1300 | out->wrap_hint (" "); |
1301 | out->text (" at "); | |
34019068 | 1302 | annotate_frame_source_file (); |
112e8700 | 1303 | out->field_string ("file", filename.get ()); |
34019068 JK |
1304 | annotate_frame_source_file_end (); |
1305 | } | |
492d29ea | 1306 | CATCH (except, RETURN_MASK_ERROR) |
34019068 | 1307 | { |
34019068 | 1308 | gdbpy_convert_exception (except); |
800eb1ce JK |
1309 | do_cleanups (cleanup_stack); |
1310 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1311 | } |
492d29ea | 1312 | END_CATCH |
1e611234 | 1313 | } |
b99bf4e3 | 1314 | do_cleanups (py_fn_cleanup); |
1e611234 PM |
1315 | } |
1316 | ||
1317 | if (PyObject_HasAttrString (filter, "line")) | |
1318 | { | |
1319 | PyObject *py_line = PyObject_CallMethod (filter, "line", NULL); | |
b99bf4e3 | 1320 | struct cleanup *py_line_cleanup; |
1e611234 PM |
1321 | int line; |
1322 | ||
34019068 | 1323 | if (py_line == NULL) |
800eb1ce JK |
1324 | { |
1325 | do_cleanups (cleanup_stack); | |
1326 | return EXT_LANG_BT_ERROR; | |
1327 | } | |
b99bf4e3 | 1328 | py_line_cleanup = make_cleanup_py_decref (py_line); |
34019068 JK |
1329 | |
1330 | if (py_line != Py_None) | |
1e611234 | 1331 | { |
34019068 | 1332 | line = PyLong_AsLong (py_line); |
30a7bb83 TT |
1333 | if (PyErr_Occurred ()) |
1334 | { | |
1335 | do_cleanups (cleanup_stack); | |
1336 | return EXT_LANG_BT_ERROR; | |
1337 | } | |
1338 | ||
492d29ea | 1339 | TRY |
1e611234 | 1340 | { |
112e8700 | 1341 | out->text (":"); |
34019068 | 1342 | annotate_frame_source_line (); |
112e8700 | 1343 | out->field_int ("line", line); |
34019068 | 1344 | } |
492d29ea | 1345 | CATCH (except, RETURN_MASK_ERROR) |
34019068 | 1346 | { |
34019068 | 1347 | gdbpy_convert_exception (except); |
800eb1ce JK |
1348 | do_cleanups (cleanup_stack); |
1349 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1350 | } |
492d29ea | 1351 | END_CATCH |
1e611234 | 1352 | } |
b99bf4e3 | 1353 | do_cleanups (py_line_cleanup); |
1e611234 PM |
1354 | } |
1355 | } | |
1356 | ||
1357 | /* For MI we need to deal with the "children" list population of | |
1358 | elided frames, so if MI output detected do not send newline. */ | |
112e8700 | 1359 | if (! out->is_mi_like_p ()) |
1e611234 | 1360 | { |
492d29ea | 1361 | TRY |
1e611234 PM |
1362 | { |
1363 | annotate_frame_end (); | |
112e8700 | 1364 | out->text ("\n"); |
1e611234 | 1365 | } |
492d29ea | 1366 | CATCH (except, RETURN_MASK_ERROR) |
1e611234 PM |
1367 | { |
1368 | gdbpy_convert_exception (except); | |
800eb1ce JK |
1369 | do_cleanups (cleanup_stack); |
1370 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1371 | } |
492d29ea | 1372 | END_CATCH |
1e611234 PM |
1373 | } |
1374 | ||
1375 | if (print_locals) | |
1376 | { | |
1377 | if (py_print_locals (filter, out, args_type, indent, | |
6dddc817 | 1378 | frame) == EXT_LANG_BT_ERROR) |
800eb1ce JK |
1379 | { |
1380 | do_cleanups (cleanup_stack); | |
1381 | return EXT_LANG_BT_ERROR; | |
1382 | } | |
1e611234 PM |
1383 | } |
1384 | ||
34019068 JK |
1385 | { |
1386 | PyObject *elided; | |
b99bf4e3 | 1387 | struct cleanup *elided_cleanup; |
1e611234 | 1388 | |
34019068 JK |
1389 | /* Finally recursively print elided frames, if any. */ |
1390 | elided = get_py_iter_from_func (filter, "elided"); | |
1391 | if (elided == NULL) | |
800eb1ce JK |
1392 | { |
1393 | do_cleanups (cleanup_stack); | |
1394 | return EXT_LANG_BT_ERROR; | |
1395 | } | |
b99bf4e3 | 1396 | elided_cleanup = make_cleanup_py_decref (elided); |
1e611234 | 1397 | |
34019068 JK |
1398 | if (elided != Py_None) |
1399 | { | |
1400 | PyObject *item; | |
1e611234 | 1401 | |
34019068 | 1402 | make_cleanup_ui_out_list_begin_end (out, "children"); |
1e611234 | 1403 | |
112e8700 | 1404 | if (! out->is_mi_like_p ()) |
34019068 | 1405 | indent++; |
1e611234 | 1406 | |
34019068 JK |
1407 | while ((item = PyIter_Next (elided))) |
1408 | { | |
b99bf4e3 JK |
1409 | struct cleanup *item_cleanup = make_cleanup_py_decref (item); |
1410 | ||
34019068 JK |
1411 | enum ext_lang_bt_status success = py_print_frame (item, flags, |
1412 | args_type, out, | |
1413 | indent, | |
1414 | levels_printed); | |
1e611234 | 1415 | |
b99bf4e3 JK |
1416 | do_cleanups (item_cleanup); |
1417 | ||
34019068 JK |
1418 | if (success == EXT_LANG_BT_ERROR) |
1419 | { | |
800eb1ce JK |
1420 | do_cleanups (cleanup_stack); |
1421 | return EXT_LANG_BT_ERROR; | |
34019068 | 1422 | } |
34019068 JK |
1423 | } |
1424 | if (item == NULL && PyErr_Occurred ()) | |
800eb1ce JK |
1425 | { |
1426 | do_cleanups (cleanup_stack); | |
1427 | return EXT_LANG_BT_ERROR; | |
1428 | } | |
34019068 | 1429 | } |
b99bf4e3 JK |
1430 | do_cleanups (elided_cleanup); |
1431 | } | |
1e611234 PM |
1432 | |
1433 | do_cleanups (cleanup_stack); | |
6dddc817 | 1434 | return EXT_LANG_BT_COMPLETED; |
1e611234 PM |
1435 | } |
1436 | ||
1437 | /* Helper function to initiate frame filter invocation at starting | |
1438 | frame FRAME. */ | |
1439 | ||
1440 | static PyObject * | |
1441 | bootstrap_python_frame_filters (struct frame_info *frame, | |
1442 | int frame_low, int frame_high) | |
1443 | { | |
1444 | struct cleanup *cleanups = | |
1445 | make_cleanup (null_cleanup, NULL); | |
1446 | PyObject *module, *sort_func, *iterable, *frame_obj, *iterator; | |
1447 | PyObject *py_frame_low, *py_frame_high; | |
1448 | ||
1449 | frame_obj = frame_info_to_frame_object (frame); | |
1450 | if (frame_obj == NULL) | |
1451 | goto error; | |
1452 | make_cleanup_py_decref (frame_obj); | |
1453 | ||
1454 | module = PyImport_ImportModule ("gdb.frames"); | |
1455 | if (module == NULL) | |
1456 | goto error; | |
1457 | make_cleanup_py_decref (module); | |
1458 | ||
1459 | sort_func = PyObject_GetAttrString (module, "execute_frame_filters"); | |
1460 | if (sort_func == NULL) | |
1461 | goto error; | |
1462 | make_cleanup_py_decref (sort_func); | |
1463 | ||
1464 | py_frame_low = PyInt_FromLong (frame_low); | |
1465 | if (py_frame_low == NULL) | |
1466 | goto error; | |
1467 | make_cleanup_py_decref (py_frame_low); | |
1468 | ||
1469 | py_frame_high = PyInt_FromLong (frame_high); | |
1470 | if (py_frame_high == NULL) | |
1471 | goto error; | |
1472 | make_cleanup_py_decref (py_frame_high); | |
1473 | ||
1474 | iterable = PyObject_CallFunctionObjArgs (sort_func, frame_obj, | |
1475 | py_frame_low, | |
1476 | py_frame_high, | |
1477 | NULL); | |
1478 | if (iterable == NULL) | |
1479 | goto error; | |
1480 | ||
1481 | do_cleanups (cleanups); | |
1482 | ||
1483 | if (iterable != Py_None) | |
1484 | { | |
1485 | iterator = PyObject_GetIter (iterable); | |
1486 | Py_DECREF (iterable); | |
1487 | } | |
1488 | else | |
1489 | { | |
1490 | return iterable; | |
1491 | } | |
1492 | ||
1493 | return iterator; | |
1494 | ||
1495 | error: | |
1496 | do_cleanups (cleanups); | |
1497 | return NULL; | |
1498 | } | |
1499 | ||
1500 | /* This is the only publicly exported function in this file. FRAME | |
1501 | is the source frame to start frame-filter invocation. FLAGS is an | |
1502 | integer holding the flags for printing. The following elements of | |
1503 | the FRAME_FILTER_FLAGS enum denotes the make-up of FLAGS: | |
1504 | PRINT_LEVEL is a flag indicating whether to print the frame's | |
1505 | relative level in the output. PRINT_FRAME_INFO is a flag that | |
1506 | indicates whether this function should print the frame | |
1507 | information, PRINT_ARGS is a flag that indicates whether to print | |
1508 | frame arguments, and PRINT_LOCALS, likewise, with frame local | |
1509 | variables. ARGS_TYPE is an enumerator describing the argument | |
1510 | format, OUT is the output stream to print. FRAME_LOW is the | |
1511 | beginning of the slice of frames to print, and FRAME_HIGH is the | |
6dddc817 DE |
1512 | upper limit of the frames to count. Returns EXT_LANG_BT_ERROR on error, |
1513 | or EXT_LANG_BT_COMPLETED on success. */ | |
1514 | ||
1515 | enum ext_lang_bt_status | |
1516 | gdbpy_apply_frame_filter (const struct extension_language_defn *extlang, | |
1517 | struct frame_info *frame, int flags, | |
1518 | enum ext_lang_frame_args args_type, | |
1519 | struct ui_out *out, int frame_low, int frame_high) | |
1e611234 PM |
1520 | { |
1521 | struct gdbarch *gdbarch = NULL; | |
1522 | struct cleanup *cleanups; | |
6dddc817 | 1523 | enum ext_lang_bt_status success = EXT_LANG_BT_ERROR; |
1e611234 | 1524 | PyObject *iterable; |
1e611234 PM |
1525 | PyObject *item; |
1526 | htab_t levels_printed; | |
1527 | ||
8ee002df | 1528 | if (!gdb_python_initialized) |
6dddc817 | 1529 | return EXT_LANG_BT_NO_FILTERS; |
8ee002df | 1530 | |
492d29ea | 1531 | TRY |
1e611234 PM |
1532 | { |
1533 | gdbarch = get_frame_arch (frame); | |
1534 | } | |
492d29ea | 1535 | CATCH (except, RETURN_MASK_ALL) |
1e611234 | 1536 | { |
21909fa1 | 1537 | /* Let gdb try to print the stack trace. */ |
6dddc817 | 1538 | return EXT_LANG_BT_NO_FILTERS; |
1e611234 | 1539 | } |
492d29ea | 1540 | END_CATCH |
1e611234 | 1541 | |
21909fa1 TT |
1542 | cleanups = ensure_python_env (gdbarch, current_language); |
1543 | ||
1e611234 PM |
1544 | iterable = bootstrap_python_frame_filters (frame, frame_low, frame_high); |
1545 | ||
1546 | if (iterable == NULL) | |
8ee002df PM |
1547 | { |
1548 | /* Normally if there is an error GDB prints the exception, | |
1549 | abandons the backtrace and exits. The user can then call "bt | |
1550 | no-filters", and get a default backtrace (it would be | |
1551 | confusing to automatically start a standard backtrace halfway | |
1552 | through a Python filtered backtrace). However in the case | |
1553 | where GDB cannot initialize the frame filters (most likely | |
1554 | due to incorrect auto-load paths), GDB has printed nothing. | |
1555 | In this case it is OK to print the default backtrace after | |
6dddc817 | 1556 | printing the error message. GDB returns EXT_LANG_BT_NO_FILTERS |
8ee002df PM |
1557 | here to signify there are no filters after printing the |
1558 | initialization error. This return code will trigger a | |
1559 | default backtrace. */ | |
1560 | ||
1561 | gdbpy_print_stack (); | |
1562 | do_cleanups (cleanups); | |
6dddc817 | 1563 | return EXT_LANG_BT_NO_FILTERS; |
8ee002df | 1564 | } |
1e611234 PM |
1565 | |
1566 | /* If iterable is None, then there are no frame filters registered. | |
1567 | If this is the case, defer to default GDB printing routines in MI | |
1568 | and CLI. */ | |
1569 | make_cleanup_py_decref (iterable); | |
1570 | if (iterable == Py_None) | |
1571 | { | |
6dddc817 | 1572 | success = EXT_LANG_BT_NO_FILTERS; |
1e611234 PM |
1573 | goto done; |
1574 | } | |
1575 | ||
1576 | levels_printed = htab_create (20, | |
1577 | htab_hash_pointer, | |
1578 | htab_eq_pointer, | |
1579 | NULL); | |
1580 | make_cleanup_htab_delete (levels_printed); | |
1581 | ||
1582 | while ((item = PyIter_Next (iterable))) | |
1583 | { | |
b99bf4e3 JK |
1584 | struct cleanup *item_cleanup = make_cleanup_py_decref (item); |
1585 | ||
1e611234 PM |
1586 | success = py_print_frame (item, flags, args_type, out, 0, |
1587 | levels_printed); | |
1588 | ||
b99bf4e3 JK |
1589 | do_cleanups (item_cleanup); |
1590 | ||
1e611234 PM |
1591 | /* Do not exit on error printing a single frame. Print the |
1592 | error and continue with other frames. */ | |
6dddc817 | 1593 | if (success == EXT_LANG_BT_ERROR) |
1e611234 | 1594 | gdbpy_print_stack (); |
1e611234 PM |
1595 | } |
1596 | ||
1597 | if (item == NULL && PyErr_Occurred ()) | |
1598 | goto error; | |
1599 | ||
1600 | done: | |
1601 | do_cleanups (cleanups); | |
1602 | return success; | |
1603 | ||
8ee002df PM |
1604 | /* Exit and abandon backtrace on error, printing the exception that |
1605 | is set. */ | |
1e611234 PM |
1606 | error: |
1607 | gdbpy_print_stack (); | |
1608 | do_cleanups (cleanups); | |
6dddc817 | 1609 | return EXT_LANG_BT_ERROR; |
1e611234 | 1610 | } |