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1e611234 PM |
1 | /* Python frame filters |
2 | ||
213516ef | 3 | Copyright (C) 2013-2023 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" | |
4b5e8d19 PW |
28 | #include "stack.h" |
29 | #include "source.h" | |
1e611234 PM |
30 | #include "annotate.h" |
31 | #include "hashtab.h" | |
32 | #include "demangle.h" | |
33 | #include "mi/mi-cmds.h" | |
34 | #include "python-internal.h" | |
268a13a5 | 35 | #include "gdbsupport/gdb_optional.h" |
e43b10e1 | 36 | #include "cli/cli-style.h" |
1e611234 PM |
37 | |
38 | enum mi_print_types | |
39 | { | |
40 | MI_PRINT_ARGS, | |
41 | MI_PRINT_LOCALS | |
42 | }; | |
43 | ||
44 | /* Helper function to extract a symbol, a name and a language | |
45 | definition from a Python object that conforms to the "Symbol Value" | |
46 | interface. OBJ is the Python object to extract the values from. | |
47 | NAME is a pass-through argument where the name of the symbol will | |
48 | be written. NAME is allocated in this function, but the caller is | |
49 | responsible for clean up. SYM is a pass-through argument where the | |
63e43d3a PMR |
50 | symbol will be written and SYM_BLOCK is a pass-through argument to |
51 | write the block where the symbol lies in. In the case of the API | |
52 | returning a string, this will be set to NULL. LANGUAGE is also a | |
53 | pass-through argument denoting the language attributed to the | |
54 | Symbol. In the case of SYM being NULL, this will be set to the | |
55 | current language. Returns EXT_LANG_BT_ERROR on error with the | |
56 | appropriate Python exception set, and EXT_LANG_BT_OK on success. */ | |
1e611234 | 57 | |
6dddc817 | 58 | static enum ext_lang_bt_status |
9b972014 | 59 | extract_sym (PyObject *obj, gdb::unique_xmalloc_ptr<char> *name, |
582942f4 | 60 | struct symbol **sym, const struct block **sym_block, |
9b972014 | 61 | const struct language_defn **language) |
1e611234 | 62 | { |
7780f186 | 63 | gdbpy_ref<> result (PyObject_CallMethod (obj, "symbol", NULL)); |
1e611234 PM |
64 | |
65 | if (result == NULL) | |
6dddc817 | 66 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
67 | |
68 | /* For 'symbol' callback, the function can return a symbol or a | |
69 | string. */ | |
ee0a3fb8 | 70 | if (gdbpy_is_string (result.get ())) |
1e611234 | 71 | { |
ee0a3fb8 | 72 | *name = python_string_to_host_string (result.get ()); |
1e611234 PM |
73 | |
74 | if (*name == NULL) | |
6dddc817 | 75 | return EXT_LANG_BT_ERROR; |
1e611234 | 76 | /* If the API returns a string (and not a symbol), then there is |
1da5d0e6 TT |
77 | no symbol derived language available and the frame filter has |
78 | either overridden the symbol with a string, or supplied a | |
79 | entirely synthetic symbol/value pairing. In that case, use | |
80 | the current language. */ | |
81 | *language = current_language; | |
1e611234 | 82 | *sym = NULL; |
63e43d3a | 83 | *sym_block = NULL; |
1e611234 PM |
84 | } |
85 | else | |
86 | { | |
87 | /* This type checks 'result' during the conversion so we | |
88 | just call it unconditionally and check the return. */ | |
ee0a3fb8 | 89 | *sym = symbol_object_to_symbol (result.get ()); |
63e43d3a PMR |
90 | /* TODO: currently, we have no way to recover the block in which SYMBOL |
91 | was found, so we have no block to return. Trying to evaluate SYMBOL | |
92 | will yield an incorrect value when it's located in a FRAME and | |
93 | evaluated from another frame (as permitted in nested functions). */ | |
94 | *sym_block = NULL; | |
1e611234 | 95 | |
1e611234 PM |
96 | if (*sym == NULL) |
97 | { | |
98 | PyErr_SetString (PyExc_RuntimeError, | |
99 | _("Unexpected value. Expecting a " | |
100 | "gdb.Symbol or a Python string.")); | |
6dddc817 | 101 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
102 | } |
103 | ||
104 | /* Duplicate the symbol name, so the caller has consistency | |
105 | in garbage collection. */ | |
987012b8 | 106 | name->reset (xstrdup ((*sym)->print_name ())); |
1e611234 PM |
107 | |
108 | /* If a symbol is specified attempt to determine the language | |
109 | from the symbol. If mode is not "auto", then the language | |
110 | has been explicitly set, use that. */ | |
111 | if (language_mode == language_mode_auto) | |
c1b5c1eb | 112 | *language = language_def ((*sym)->language ()); |
1e611234 PM |
113 | else |
114 | *language = current_language; | |
115 | } | |
116 | ||
6dddc817 | 117 | return EXT_LANG_BT_OK; |
1e611234 PM |
118 | } |
119 | ||
120 | /* Helper function to extract a value from an object that conforms to | |
121 | the "Symbol Value" interface. OBJ is the Python object to extract | |
122 | the value from. VALUE is a pass-through argument where the value | |
123 | will be written. If the object does not have the value attribute, | |
124 | or provides the Python None for a value, VALUE will be set to NULL | |
6dddc817 DE |
125 | and this function will return as successful. Returns EXT_LANG_BT_ERROR |
126 | on error with the appropriate Python exception set, and EXT_LANG_BT_OK on | |
1e611234 PM |
127 | success. */ |
128 | ||
6dddc817 | 129 | static enum ext_lang_bt_status |
1e611234 PM |
130 | extract_value (PyObject *obj, struct value **value) |
131 | { | |
132 | if (PyObject_HasAttrString (obj, "value")) | |
133 | { | |
7780f186 | 134 | gdbpy_ref<> vresult (PyObject_CallMethod (obj, "value", NULL)); |
1e611234 PM |
135 | |
136 | if (vresult == NULL) | |
6dddc817 | 137 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
138 | |
139 | /* The Python code has returned 'None' for a value, so we set | |
140 | value to NULL. This flags that GDB should read the | |
141 | value. */ | |
142 | if (vresult == Py_None) | |
143 | { | |
1e611234 | 144 | *value = NULL; |
6dddc817 | 145 | return EXT_LANG_BT_OK; |
1e611234 PM |
146 | } |
147 | else | |
148 | { | |
ee0a3fb8 | 149 | *value = convert_value_from_python (vresult.get ()); |
1e611234 PM |
150 | |
151 | if (*value == NULL) | |
6dddc817 | 152 | return EXT_LANG_BT_ERROR; |
1e611234 | 153 | |
6dddc817 | 154 | return EXT_LANG_BT_OK; |
1e611234 PM |
155 | } |
156 | } | |
157 | else | |
158 | *value = NULL; | |
159 | ||
6dddc817 | 160 | return EXT_LANG_BT_OK; |
1e611234 PM |
161 | } |
162 | ||
163 | /* MI prints only certain values according to the type of symbol and | |
164 | also what the user has specified. SYM is the symbol to check, and | |
165 | MI_PRINT_TYPES is an enum specifying what the user wants emitted | |
166 | for the MI command in question. */ | |
167 | static int | |
168 | mi_should_print (struct symbol *sym, enum mi_print_types type) | |
169 | { | |
170 | int print_me = 0; | |
171 | ||
66d7f48f | 172 | switch (sym->aclass ()) |
1e611234 PM |
173 | { |
174 | default: | |
175 | case LOC_UNDEF: /* catches errors */ | |
176 | case LOC_CONST: /* constant */ | |
177 | case LOC_TYPEDEF: /* local typedef */ | |
178 | case LOC_LABEL: /* local label */ | |
179 | case LOC_BLOCK: /* local function */ | |
180 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
181 | case LOC_UNRESOLVED: /* unresolved static */ | |
182 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
183 | print_me = 0; | |
184 | break; | |
185 | ||
186 | case LOC_ARG: /* argument */ | |
187 | case LOC_REF_ARG: /* reference arg */ | |
188 | case LOC_REGPARM_ADDR: /* indirect register arg */ | |
189 | case LOC_LOCAL: /* stack local */ | |
190 | case LOC_STATIC: /* static */ | |
191 | case LOC_REGISTER: /* register */ | |
192 | case LOC_COMPUTED: /* computed location */ | |
193 | if (type == MI_PRINT_LOCALS) | |
d9743061 | 194 | print_me = ! sym->is_argument (); |
1e611234 | 195 | else |
d9743061 | 196 | print_me = sym->is_argument (); |
1e611234 PM |
197 | } |
198 | return print_me; | |
199 | } | |
200 | ||
201 | /* Helper function which outputs a type name extracted from VAL to a | |
202 | "type" field in the output stream OUT. OUT is the ui-out structure | |
203 | the type name will be output too, and VAL is the value that the | |
76c939ac | 204 | type will be extracted from. */ |
1e611234 | 205 | |
76c939ac | 206 | static void |
1e611234 PM |
207 | py_print_type (struct ui_out *out, struct value *val) |
208 | { | |
76c939ac | 209 | check_typedef (value_type (val)); |
1e611234 | 210 | |
76c939ac TT |
211 | string_file stb; |
212 | type_print (value_type (val), "", &stb, -1); | |
213 | out->field_stream ("type", stb); | |
1e611234 PM |
214 | } |
215 | ||
216 | /* Helper function which outputs a value to an output field in a | |
217 | stream. OUT is the ui-out structure the value will be output to, | |
218 | VAL is the value that will be printed, OPTS contains the value | |
219 | printing options, ARGS_TYPE is an enumerator describing the | |
220 | argument format, and LANGUAGE is the language_defn that the value | |
76c939ac | 221 | will be printed with. */ |
1e611234 | 222 | |
76c939ac | 223 | static void |
1e611234 PM |
224 | py_print_value (struct ui_out *out, struct value *val, |
225 | const struct value_print_options *opts, | |
226 | int indent, | |
6dddc817 | 227 | enum ext_lang_frame_args args_type, |
1e611234 PM |
228 | const struct language_defn *language) |
229 | { | |
230 | int should_print = 0; | |
1e611234 PM |
231 | |
232 | /* MI does not print certain values, differentiated by type, | |
233 | depending on what ARGS_TYPE indicates. Test type against option. | |
234 | For CLI print all values. */ | |
235 | if (args_type == MI_PRINT_SIMPLE_VALUES | |
236 | || args_type == MI_PRINT_ALL_VALUES) | |
237 | { | |
76c939ac | 238 | struct type *type = check_typedef (value_type (val)); |
1e611234 PM |
239 | |
240 | if (args_type == MI_PRINT_ALL_VALUES) | |
241 | should_print = 1; | |
242 | else if (args_type == MI_PRINT_SIMPLE_VALUES | |
78134374 SM |
243 | && type->code () != TYPE_CODE_ARRAY |
244 | && type->code () != TYPE_CODE_STRUCT | |
245 | && type->code () != TYPE_CODE_UNION) | |
1e611234 PM |
246 | should_print = 1; |
247 | } | |
248 | else if (args_type != NO_VALUES) | |
249 | should_print = 1; | |
250 | ||
251 | if (should_print) | |
252 | { | |
76c939ac | 253 | string_file stb; |
1e611234 | 254 | |
76c939ac TT |
255 | common_val_print (val, &stb, indent, opts, language); |
256 | out->field_stream ("value", stb); | |
1e611234 | 257 | } |
1e611234 PM |
258 | } |
259 | ||
260 | /* Helper function to call a Python method and extract an iterator | |
261 | from the result. If the function returns anything but an iterator | |
262 | the exception is preserved and NULL is returned. FILTER is the | |
263 | Python object to call, and FUNC is the name of the method. Returns | |
264 | a PyObject, or NULL on error with the appropriate exception set. | |
265 | This function can return an iterator, or NULL. */ | |
266 | ||
267 | static PyObject * | |
a121b7c1 | 268 | get_py_iter_from_func (PyObject *filter, const char *func) |
1e611234 PM |
269 | { |
270 | if (PyObject_HasAttrString (filter, func)) | |
271 | { | |
7780f186 | 272 | gdbpy_ref<> result (PyObject_CallMethod (filter, func, NULL)); |
1e611234 PM |
273 | |
274 | if (result != NULL) | |
275 | { | |
276 | if (result == Py_None) | |
277 | { | |
ee0a3fb8 | 278 | return result.release (); |
1e611234 PM |
279 | } |
280 | else | |
281 | { | |
ee0a3fb8 | 282 | return PyObject_GetIter (result.get ()); |
1e611234 PM |
283 | } |
284 | } | |
285 | } | |
286 | else | |
287 | Py_RETURN_NONE; | |
288 | ||
289 | return NULL; | |
290 | } | |
291 | ||
292 | /* Helper function to output a single frame argument and value to an | |
293 | output stream. This function will account for entry values if the | |
294 | FV parameter is populated, the frame argument has entry values | |
295 | associated with them, and the appropriate "set entry-value" | |
296 | options are set. Will output in CLI or MI like format depending | |
297 | on the type of output stream detected. OUT is the output stream, | |
298 | SYM_NAME is the name of the symbol. If SYM_NAME is populated then | |
299 | it must have an accompanying value in the parameter FV. FA is a | |
300 | frame argument structure. If FA is populated, both SYM_NAME and | |
301 | FV are ignored. OPTS contains the value printing options, | |
302 | ARGS_TYPE is an enumerator describing the argument format, | |
303 | PRINT_ARGS_FIELD is a flag which indicates if we output "ARGS=1" | |
304 | in MI output in commands where both arguments and locals are | |
76c939ac | 305 | printed. */ |
1e611234 | 306 | |
76c939ac | 307 | static void |
1e611234 PM |
308 | py_print_single_arg (struct ui_out *out, |
309 | const char *sym_name, | |
310 | struct frame_arg *fa, | |
311 | struct value *fv, | |
312 | const struct value_print_options *opts, | |
6dddc817 | 313 | enum ext_lang_frame_args args_type, |
1e611234 PM |
314 | int print_args_field, |
315 | const struct language_defn *language) | |
316 | { | |
317 | struct value *val; | |
1e611234 PM |
318 | |
319 | if (fa != NULL) | |
320 | { | |
c75bd3a2 | 321 | if (fa->val == NULL && fa->error == NULL) |
76c939ac | 322 | return; |
c1b5c1eb | 323 | language = language_def (fa->sym->language ()); |
1e611234 PM |
324 | val = fa->val; |
325 | } | |
326 | else | |
327 | val = fv; | |
328 | ||
76c939ac | 329 | gdb::optional<ui_out_emit_tuple> maybe_tuple; |
1e611234 | 330 | |
76c939ac | 331 | /* MI has varying rules for tuples, but generally if there is only |
1e611234 PM |
332 | one element in each item in the list, do not start a tuple. The |
333 | exception is -stack-list-variables which emits an ARGS="1" field | |
334 | if the value is a frame argument. This is denoted in this | |
335 | function with PRINT_ARGS_FIELD which is flag from the caller to | |
336 | emit the ARGS field. */ | |
76c939ac TT |
337 | if (out->is_mi_like_p ()) |
338 | { | |
339 | if (print_args_field || args_type != NO_VALUES) | |
340 | maybe_tuple.emplace (out, nullptr); | |
341 | } | |
1e611234 | 342 | |
76c939ac TT |
343 | annotate_arg_begin (); |
344 | ||
345 | /* If frame argument is populated, check for entry-values and the | |
346 | entry value options. */ | |
347 | if (fa != NULL) | |
348 | { | |
349 | string_file stb; | |
1e611234 | 350 | |
0426ad51 | 351 | gdb_puts (fa->sym->print_name (), &stb); |
76c939ac | 352 | if (fa->entry_kind == print_entry_values_compact) |
1e611234 | 353 | { |
76c939ac | 354 | stb.puts ("="); |
1e611234 | 355 | |
0426ad51 | 356 | gdb_puts (fa->sym->print_name (), &stb); |
1e611234 | 357 | } |
76c939ac TT |
358 | if (fa->entry_kind == print_entry_values_only |
359 | || fa->entry_kind == print_entry_values_compact) | |
360 | stb.puts ("@entry"); | |
361 | out->field_stream ("name", stb); | |
362 | } | |
363 | else | |
364 | /* Otherwise, just output the name. */ | |
365 | out->field_string ("name", sym_name); | |
1e611234 | 366 | |
76c939ac | 367 | annotate_arg_name_end (); |
1e611234 | 368 | |
2038b7fd | 369 | out->text ("="); |
1e611234 | 370 | |
76c939ac | 371 | if (print_args_field) |
381befee | 372 | out->field_signed ("arg", 1); |
1e611234 | 373 | |
76c939ac TT |
374 | /* For MI print the type, but only for simple values. This seems |
375 | weird, but this is how MI choose to format the various output | |
376 | types. */ | |
377 | if (args_type == MI_PRINT_SIMPLE_VALUES && val != NULL) | |
378 | py_print_type (out, val); | |
1e611234 | 379 | |
76c939ac TT |
380 | if (val != NULL) |
381 | annotate_arg_value (value_type (val)); | |
9c6595ab | 382 | |
76c939ac TT |
383 | /* If the output is to the CLI, and the user option "set print |
384 | frame-arguments" is set to none, just output "...". */ | |
385 | if (! out->is_mi_like_p () && args_type == NO_VALUES) | |
386 | out->field_string ("value", "..."); | |
387 | else | |
388 | { | |
389 | /* Otherwise, print the value for both MI and the CLI, except | |
390 | for the case of MI_PRINT_NO_VALUES. */ | |
391 | if (args_type != NO_VALUES) | |
392 | { | |
393 | if (val == NULL) | |
1e611234 | 394 | { |
76c939ac | 395 | gdb_assert (fa != NULL && fa->error != NULL); |
7f6aba03 | 396 | out->field_fmt ("value", metadata_style.style (), |
76c939ac | 397 | _("<error reading variable: %s>"), |
123cd851 | 398 | fa->error.get ()); |
1e611234 | 399 | } |
76c939ac TT |
400 | else |
401 | py_print_value (out, val, opts, 0, args_type, language); | |
9c6595ab | 402 | } |
1e611234 | 403 | } |
1e611234 PM |
404 | } |
405 | ||
406 | /* Helper function to loop over frame arguments provided by the | |
407 | "frame_arguments" Python API. Elements in the iterator must | |
408 | conform to the "Symbol Value" interface. ITER is the Python | |
409 | iterable object, OUT is the output stream, ARGS_TYPE is an | |
410 | enumerator describing the argument format, PRINT_ARGS_FIELD is a | |
411 | flag which indicates if we output "ARGS=1" in MI output in commands | |
412 | where both arguments and locals are printed, and FRAME is the | |
6dddc817 DE |
413 | backing frame. Returns EXT_LANG_BT_ERROR on error, with any GDB |
414 | exceptions converted to a Python exception, or EXT_LANG_BT_OK on | |
1e611234 PM |
415 | success. */ |
416 | ||
6dddc817 | 417 | static enum ext_lang_bt_status |
1e611234 PM |
418 | enumerate_args (PyObject *iter, |
419 | struct ui_out *out, | |
6dddc817 | 420 | enum ext_lang_frame_args args_type, |
1e611234 | 421 | int print_args_field, |
bd2b40ac | 422 | frame_info_ptr frame) |
1e611234 | 423 | { |
1e611234 | 424 | struct value_print_options opts; |
1e611234 PM |
425 | |
426 | get_user_print_options (&opts); | |
427 | ||
428 | if (args_type == CLI_SCALAR_VALUES) | |
429 | { | |
430 | /* True in "summary" mode, false otherwise. */ | |
dad6b350 | 431 | opts.summary = true; |
1e611234 PM |
432 | } |
433 | ||
dad6b350 | 434 | opts.deref_ref = true; |
1e611234 | 435 | |
76c939ac | 436 | annotate_frame_args (); |
1e611234 PM |
437 | |
438 | /* Collect the first argument outside of the loop, so output of | |
439 | commas in the argument output is correct. At the end of the | |
440 | loop block collect another item from the iterator, and, if it is | |
441 | not null emit a comma. */ | |
7780f186 | 442 | gdbpy_ref<> item (PyIter_Next (iter)); |
1e611234 | 443 | if (item == NULL && PyErr_Occurred ()) |
06fc9bf7 | 444 | return EXT_LANG_BT_ERROR; |
1e611234 | 445 | |
06fc9bf7 | 446 | while (item != NULL) |
1e611234 PM |
447 | { |
448 | const struct language_defn *language; | |
9b972014 | 449 | gdb::unique_xmalloc_ptr<char> sym_name; |
1e611234 | 450 | struct symbol *sym; |
582942f4 | 451 | const struct block *sym_block; |
1e611234 | 452 | struct value *val; |
6dddc817 | 453 | enum ext_lang_bt_status success = EXT_LANG_BT_ERROR; |
1e611234 | 454 | |
06fc9bf7 TT |
455 | success = extract_sym (item.get (), &sym_name, &sym, &sym_block, |
456 | &language); | |
6dddc817 | 457 | if (success == EXT_LANG_BT_ERROR) |
06fc9bf7 | 458 | return EXT_LANG_BT_ERROR; |
1e611234 | 459 | |
06fc9bf7 | 460 | success = extract_value (item.get (), &val); |
6dddc817 | 461 | if (success == EXT_LANG_BT_ERROR) |
06fc9bf7 | 462 | return EXT_LANG_BT_ERROR; |
1e611234 | 463 | |
112e8700 | 464 | if (sym && out->is_mi_like_p () |
1e611234 | 465 | && ! mi_should_print (sym, MI_PRINT_ARGS)) |
9b972014 | 466 | continue; |
1e611234 PM |
467 | |
468 | /* If the object did not provide a value, read it using | |
469 | read_frame_args and account for entry values, if any. */ | |
470 | if (val == NULL) | |
471 | { | |
472 | struct frame_arg arg, entryarg; | |
473 | ||
474 | /* If there is no value, and also no symbol, set error and | |
475 | exit. */ | |
476 | if (sym == NULL) | |
477 | { | |
478 | PyErr_SetString (PyExc_RuntimeError, | |
479 | _("No symbol or value provided.")); | |
06fc9bf7 | 480 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
481 | } |
482 | ||
d4c16835 PA |
483 | read_frame_arg (user_frame_print_options, |
484 | sym, frame, &arg, &entryarg); | |
1e611234 PM |
485 | |
486 | /* The object has not provided a value, so this is a frame | |
487 | argument to be read by GDB. In this case we have to | |
488 | account for entry-values. */ | |
489 | ||
490 | if (arg.entry_kind != print_entry_values_only) | |
491 | { | |
76c939ac TT |
492 | py_print_single_arg (out, NULL, &arg, |
493 | NULL, &opts, | |
494 | args_type, | |
495 | print_args_field, | |
496 | NULL); | |
1e611234 PM |
497 | } |
498 | ||
499 | if (entryarg.entry_kind != print_entry_values_no) | |
500 | { | |
501 | if (arg.entry_kind != print_entry_values_only) | |
502 | { | |
76c939ac | 503 | out->text (", "); |
6c92c339 | 504 | out->wrap_hint (4); |
1e611234 PM |
505 | } |
506 | ||
76c939ac TT |
507 | py_print_single_arg (out, NULL, &entryarg, NULL, &opts, |
508 | args_type, print_args_field, NULL); | |
1e611234 | 509 | } |
1e611234 PM |
510 | } |
511 | else | |
512 | { | |
513 | /* If the object has provided a value, we just print that. */ | |
514 | if (val != NULL) | |
76c939ac TT |
515 | py_print_single_arg (out, sym_name.get (), NULL, val, &opts, |
516 | args_type, print_args_field, | |
517 | language); | |
1e611234 PM |
518 | } |
519 | ||
1e611234 PM |
520 | /* Collect the next item from the iterator. If |
521 | this is the last item, do not print the | |
522 | comma. */ | |
06fc9bf7 | 523 | item.reset (PyIter_Next (iter)); |
1e611234 | 524 | if (item != NULL) |
76c939ac | 525 | out->text (", "); |
1e611234 | 526 | else if (PyErr_Occurred ()) |
06fc9bf7 | 527 | return EXT_LANG_BT_ERROR; |
1e611234 | 528 | |
76c939ac | 529 | annotate_arg_end (); |
1e611234 PM |
530 | } |
531 | ||
6dddc817 | 532 | return EXT_LANG_BT_OK; |
1e611234 PM |
533 | } |
534 | ||
535 | ||
536 | /* Helper function to loop over variables provided by the | |
537 | "frame_locals" Python API. Elements in the iterable must conform | |
538 | to the "Symbol Value" interface. ITER is the Python iterable | |
539 | object, OUT is the output stream, INDENT is whether we should | |
540 | indent the output (for CLI), ARGS_TYPE is an enumerator describing | |
541 | the argument format, PRINT_ARGS_FIELD is flag which indicates | |
542 | whether to output the ARGS field in the case of | |
543 | -stack-list-variables and FRAME is the backing frame. Returns | |
6dddc817 DE |
544 | EXT_LANG_BT_ERROR on error, with any GDB exceptions converted to a Python |
545 | exception, or EXT_LANG_BT_OK on success. */ | |
1e611234 | 546 | |
6dddc817 | 547 | static enum ext_lang_bt_status |
1e611234 PM |
548 | enumerate_locals (PyObject *iter, |
549 | struct ui_out *out, | |
550 | int indent, | |
6dddc817 | 551 | enum ext_lang_frame_args args_type, |
1e611234 | 552 | int print_args_field, |
bd2b40ac | 553 | frame_info_ptr frame) |
1e611234 | 554 | { |
1e611234 PM |
555 | struct value_print_options opts; |
556 | ||
557 | get_user_print_options (&opts); | |
dad6b350 | 558 | opts.deref_ref = true; |
1e611234 | 559 | |
13df46cc | 560 | while (true) |
1e611234 PM |
561 | { |
562 | const struct language_defn *language; | |
9b972014 | 563 | gdb::unique_xmalloc_ptr<char> sym_name; |
1e611234 | 564 | struct value *val; |
6dddc817 | 565 | enum ext_lang_bt_status success = EXT_LANG_BT_ERROR; |
1e611234 | 566 | struct symbol *sym; |
582942f4 | 567 | const struct block *sym_block; |
1e611234 | 568 | int local_indent = 8 + (8 * indent); |
d4b0bb18 | 569 | gdb::optional<ui_out_emit_tuple> tuple; |
1e611234 | 570 | |
7780f186 | 571 | gdbpy_ref<> item (PyIter_Next (iter)); |
13df46cc TT |
572 | if (item == NULL) |
573 | break; | |
1e611234 | 574 | |
13df46cc TT |
575 | success = extract_sym (item.get (), &sym_name, &sym, &sym_block, |
576 | &language); | |
6dddc817 | 577 | if (success == EXT_LANG_BT_ERROR) |
d4b0bb18 | 578 | return EXT_LANG_BT_ERROR; |
1e611234 | 579 | |
13df46cc | 580 | success = extract_value (item.get (), &val); |
6dddc817 | 581 | if (success == EXT_LANG_BT_ERROR) |
d4b0bb18 | 582 | return EXT_LANG_BT_ERROR; |
1e611234 | 583 | |
112e8700 | 584 | if (sym != NULL && out->is_mi_like_p () |
1e611234 | 585 | && ! mi_should_print (sym, MI_PRINT_LOCALS)) |
d4b0bb18 | 586 | continue; |
1e611234 PM |
587 | |
588 | /* If the object did not provide a value, read it. */ | |
589 | if (val == NULL) | |
76c939ac | 590 | val = read_var_value (sym, sym_block, frame); |
1e611234 PM |
591 | |
592 | /* With PRINT_NO_VALUES, MI does not emit a tuple normally as | |
593 | each output contains only one field. The exception is | |
594 | -stack-list-variables, which always provides a tuple. */ | |
112e8700 | 595 | if (out->is_mi_like_p ()) |
1e611234 PM |
596 | { |
597 | if (print_args_field || args_type != NO_VALUES) | |
d4b0bb18 | 598 | tuple.emplace (out, nullptr); |
1e611234 | 599 | } |
1e611234 | 600 | |
2038b7fd TT |
601 | /* If the output is not MI we indent locals. */ |
602 | out->spaces (local_indent); | |
76c939ac | 603 | out->field_string ("name", sym_name.get ()); |
2038b7fd | 604 | out->text (" = "); |
1e611234 PM |
605 | |
606 | if (args_type == MI_PRINT_SIMPLE_VALUES) | |
76c939ac | 607 | py_print_type (out, val); |
1e611234 PM |
608 | |
609 | /* CLI always prints values for locals. MI uses the | |
610 | simple/no/all system. */ | |
112e8700 | 611 | if (! out->is_mi_like_p ()) |
1e611234 PM |
612 | { |
613 | int val_indent = (indent + 1) * 4; | |
614 | ||
76c939ac TT |
615 | py_print_value (out, val, &opts, val_indent, args_type, |
616 | language); | |
1e611234 PM |
617 | } |
618 | else | |
619 | { | |
620 | if (args_type != NO_VALUES) | |
76c939ac TT |
621 | py_print_value (out, val, &opts, 0, args_type, |
622 | language); | |
1e611234 PM |
623 | } |
624 | ||
76c939ac | 625 | out->text ("\n"); |
1e611234 PM |
626 | } |
627 | ||
13df46cc TT |
628 | if (!PyErr_Occurred ()) |
629 | return EXT_LANG_BT_OK; | |
1e611234 | 630 | |
6dddc817 | 631 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
632 | } |
633 | ||
6dddc817 DE |
634 | /* Helper function for -stack-list-variables. Returns EXT_LANG_BT_ERROR on |
635 | error, or EXT_LANG_BT_OK on success. */ | |
1e611234 | 636 | |
6dddc817 | 637 | static enum ext_lang_bt_status |
1e611234 PM |
638 | py_mi_print_variables (PyObject *filter, struct ui_out *out, |
639 | struct value_print_options *opts, | |
6dddc817 | 640 | enum ext_lang_frame_args args_type, |
bd2b40ac | 641 | frame_info_ptr frame) |
1e611234 | 642 | { |
7780f186 | 643 | gdbpy_ref<> args_iter (get_py_iter_from_func (filter, "frame_args")); |
1e611234 | 644 | if (args_iter == NULL) |
13df46cc | 645 | return EXT_LANG_BT_ERROR; |
1e611234 | 646 | |
7780f186 | 647 | gdbpy_ref<> locals_iter (get_py_iter_from_func (filter, "frame_locals")); |
1e611234 | 648 | if (locals_iter == NULL) |
13df46cc | 649 | return EXT_LANG_BT_ERROR; |
1e611234 | 650 | |
d4b0bb18 | 651 | ui_out_emit_list list_emitter (out, "variables"); |
1e611234 | 652 | |
d4b0bb18 TT |
653 | if (args_iter != Py_None |
654 | && (enumerate_args (args_iter.get (), out, args_type, 1, frame) | |
655 | == EXT_LANG_BT_ERROR)) | |
656 | return EXT_LANG_BT_ERROR; | |
1e611234 | 657 | |
d4b0bb18 TT |
658 | if (locals_iter != Py_None |
659 | && (enumerate_locals (locals_iter.get (), out, 1, args_type, 1, frame) | |
660 | == EXT_LANG_BT_ERROR)) | |
661 | return EXT_LANG_BT_ERROR; | |
1e611234 | 662 | |
6dddc817 | 663 | return EXT_LANG_BT_OK; |
1e611234 PM |
664 | } |
665 | ||
666 | /* Helper function for printing locals. This function largely just | |
667 | creates the wrapping tuple, and calls enumerate_locals. Returns | |
6dddc817 | 668 | EXT_LANG_BT_ERROR on error, or EXT_LANG_BT_OK on success. */ |
1e611234 | 669 | |
6dddc817 | 670 | static enum ext_lang_bt_status |
1e611234 PM |
671 | py_print_locals (PyObject *filter, |
672 | struct ui_out *out, | |
6dddc817 | 673 | enum ext_lang_frame_args args_type, |
1e611234 | 674 | int indent, |
bd2b40ac | 675 | frame_info_ptr frame) |
1e611234 | 676 | { |
7780f186 | 677 | gdbpy_ref<> locals_iter (get_py_iter_from_func (filter, "frame_locals")); |
1e611234 | 678 | if (locals_iter == NULL) |
13df46cc | 679 | return EXT_LANG_BT_ERROR; |
1e611234 | 680 | |
d4b0bb18 | 681 | ui_out_emit_list list_emitter (out, "locals"); |
1e611234 | 682 | |
d4b0bb18 TT |
683 | if (locals_iter != Py_None |
684 | && (enumerate_locals (locals_iter.get (), out, indent, args_type, | |
685 | 0, frame) == EXT_LANG_BT_ERROR)) | |
686 | return EXT_LANG_BT_ERROR; | |
1e611234 | 687 | |
6dddc817 | 688 | return EXT_LANG_BT_OK; |
1e611234 PM |
689 | } |
690 | ||
691 | /* Helper function for printing frame arguments. This function | |
692 | largely just creates the wrapping tuple, and calls enumerate_args. | |
6dddc817 DE |
693 | Returns EXT_LANG_BT_ERROR on error, with any GDB exceptions converted to |
694 | a Python exception, or EXT_LANG_BT_OK on success. */ | |
1e611234 | 695 | |
6dddc817 | 696 | static enum ext_lang_bt_status |
1e611234 PM |
697 | py_print_args (PyObject *filter, |
698 | struct ui_out *out, | |
6dddc817 | 699 | enum ext_lang_frame_args args_type, |
bd2b40ac | 700 | frame_info_ptr frame) |
1e611234 | 701 | { |
7780f186 | 702 | gdbpy_ref<> args_iter (get_py_iter_from_func (filter, "frame_args")); |
1e611234 | 703 | if (args_iter == NULL) |
13df46cc | 704 | return EXT_LANG_BT_ERROR; |
1e611234 | 705 | |
d4b0bb18 | 706 | ui_out_emit_list list_emitter (out, "args"); |
1e611234 | 707 | |
6c92c339 | 708 | out->wrap_hint (3); |
76c939ac | 709 | annotate_frame_args (); |
2038b7fd | 710 | out->text (" ("); |
1e611234 | 711 | |
4b5e8d19 PW |
712 | if (args_type == CLI_PRESENCE) |
713 | { | |
714 | if (args_iter != Py_None) | |
715 | { | |
716 | gdbpy_ref<> item (PyIter_Next (args_iter.get ())); | |
717 | ||
718 | if (item != NULL) | |
719 | out->text ("..."); | |
720 | else if (PyErr_Occurred ()) | |
721 | return EXT_LANG_BT_ERROR; | |
722 | } | |
723 | } | |
724 | else if (args_iter != Py_None | |
725 | && (enumerate_args (args_iter.get (), out, args_type, 0, frame) | |
726 | == EXT_LANG_BT_ERROR)) | |
d4b0bb18 | 727 | return EXT_LANG_BT_ERROR; |
1e611234 | 728 | |
2038b7fd | 729 | out->text (")"); |
1e611234 | 730 | |
6dddc817 | 731 | return EXT_LANG_BT_OK; |
1e611234 PM |
732 | } |
733 | ||
734 | /* Print a single frame to the designated output stream, detecting | |
735 | whether the output is MI or console, and formatting the output | |
736 | according to the conventions of that protocol. FILTER is the | |
737 | frame-filter associated with this frame. FLAGS is an integer | |
738 | describing the various print options. The FLAGS variables is | |
739 | described in "apply_frame_filter" function. ARGS_TYPE is an | |
740 | enumerator describing the argument format. OUT is the output | |
741 | stream to print, INDENT is the level of indention for this frame | |
742 | (in the case of elided frames), and LEVELS_PRINTED is a hash-table | |
743 | containing all the frames level that have already been printed. | |
744 | If a frame level has been printed, do not print it again (in the | |
6dddc817 | 745 | case of elided frames). Returns EXT_LANG_BT_ERROR on error, with any |
63283d4a | 746 | GDB exceptions converted to a Python exception, or EXT_LANG_BT_OK |
b99bf4e3 | 747 | on success. It can also throw an exception RETURN_QUIT. */ |
1e611234 | 748 | |
6dddc817 | 749 | static enum ext_lang_bt_status |
d4dd3282 | 750 | py_print_frame (PyObject *filter, frame_filter_flags flags, |
6dddc817 | 751 | enum ext_lang_frame_args args_type, |
1e611234 PM |
752 | struct ui_out *out, int indent, htab_t levels_printed) |
753 | { | |
754 | int has_addr = 0; | |
755 | CORE_ADDR address = 0; | |
756 | struct gdbarch *gdbarch = NULL; | |
bd2b40ac | 757 | frame_info_ptr frame = NULL; |
1e611234 | 758 | struct value_print_options opts; |
4b5e8d19 | 759 | |
1e611234 | 760 | int print_level, print_frame_info, print_args, print_locals; |
4b5e8d19 PW |
761 | /* Note that the below default in non-mi mode is the same as the |
762 | default value for the backtrace command (see the call to print_frame_info | |
763 | in backtrace_command_1). | |
764 | Having the same default ensures that 'bt' and 'bt no-filters' | |
765 | have the same behaviour when some filters exist but do not apply | |
766 | to a frame. */ | |
767 | enum print_what print_what | |
768 | = out->is_mi_like_p () ? LOC_AND_ADDRESS : LOCATION; | |
9b972014 | 769 | gdb::unique_xmalloc_ptr<char> function_to_free; |
1e611234 PM |
770 | |
771 | /* Extract print settings from FLAGS. */ | |
772 | print_level = (flags & PRINT_LEVEL) ? 1 : 0; | |
773 | print_frame_info = (flags & PRINT_FRAME_INFO) ? 1 : 0; | |
774 | print_args = (flags & PRINT_ARGS) ? 1 : 0; | |
775 | print_locals = (flags & PRINT_LOCALS) ? 1 : 0; | |
776 | ||
777 | get_user_print_options (&opts); | |
4b5e8d19 | 778 | if (print_frame_info) |
01add95b SM |
779 | { |
780 | gdb::optional<enum print_what> user_frame_info_print_what; | |
781 | ||
782 | get_user_print_what_frame_info (&user_frame_info_print_what); | |
783 | if (!out->is_mi_like_p () && user_frame_info_print_what.has_value ()) | |
784 | { | |
785 | /* Use the specific frame information desired by the user. */ | |
786 | print_what = *user_frame_info_print_what; | |
787 | } | |
788 | } | |
1e611234 PM |
789 | |
790 | /* Get the underlying frame. This is needed to determine GDB | |
791 | architecture, and also, in the cases of frame variables/arguments to | |
792 | read them if they returned filter object requires us to do so. */ | |
7780f186 TT |
793 | gdbpy_ref<> py_inf_frame (PyObject_CallMethod (filter, "inferior_frame", |
794 | NULL)); | |
1e611234 | 795 | if (py_inf_frame == NULL) |
b99bf4e3 | 796 | return EXT_LANG_BT_ERROR; |
1e611234 | 797 | |
74c49d45 | 798 | frame = frame_object_to_frame_info (py_inf_frame.get ()); |
1e611234 | 799 | if (frame == NULL) |
b99bf4e3 | 800 | return EXT_LANG_BT_ERROR; |
1e611234 | 801 | |
4b5e8d19 PW |
802 | symtab_and_line sal = find_frame_sal (frame); |
803 | ||
76c939ac | 804 | gdbarch = get_frame_arch (frame); |
1e611234 | 805 | |
1e611234 PM |
806 | /* stack-list-variables. */ |
807 | if (print_locals && print_args && ! print_frame_info) | |
808 | { | |
809 | if (py_mi_print_variables (filter, out, &opts, | |
6dddc817 | 810 | args_type, frame) == EXT_LANG_BT_ERROR) |
b99bf4e3 | 811 | return EXT_LANG_BT_ERROR; |
63283d4a | 812 | return EXT_LANG_BT_OK; |
1e611234 PM |
813 | } |
814 | ||
d4b0bb18 | 815 | gdb::optional<ui_out_emit_tuple> tuple; |
b99bf4e3 | 816 | |
1e611234 PM |
817 | /* -stack-list-locals does not require a |
818 | wrapping frame attribute. */ | |
819 | if (print_frame_info || (print_args && ! print_locals)) | |
d4b0bb18 | 820 | tuple.emplace (out, "frame"); |
1e611234 PM |
821 | |
822 | if (print_frame_info) | |
823 | { | |
824 | /* Elided frames are also printed with this function (recursively) | |
825 | and are printed with indention. */ | |
826 | if (indent > 0) | |
76c939ac | 827 | out->spaces (indent * 4); |
1e611234 PM |
828 | |
829 | /* The address is required for frame annotations, and also for | |
830 | address printing. */ | |
831 | if (PyObject_HasAttrString (filter, "address")) | |
832 | { | |
7780f186 | 833 | gdbpy_ref<> paddr (PyObject_CallMethod (filter, "address", NULL)); |
34019068 JK |
834 | |
835 | if (paddr == NULL) | |
d4b0bb18 | 836 | return EXT_LANG_BT_ERROR; |
34019068 JK |
837 | |
838 | if (paddr != Py_None) | |
1e611234 | 839 | { |
74c49d45 | 840 | if (get_addr_from_python (paddr.get (), &address) < 0) |
d4b0bb18 | 841 | return EXT_LANG_BT_ERROR; |
30a7bb83 | 842 | |
34019068 | 843 | has_addr = 1; |
1e611234 | 844 | } |
1e611234 PM |
845 | } |
846 | } | |
847 | ||
4b5e8d19 PW |
848 | /* For MI, each piece is controlled individually. */ |
849 | bool location_print = (print_frame_info | |
850 | && !out->is_mi_like_p () | |
851 | && (print_what == LOCATION | |
852 | || print_what == SRC_AND_LOC | |
853 | || print_what == LOC_AND_ADDRESS | |
854 | || print_what == SHORT_LOCATION)); | |
855 | ||
1e611234 PM |
856 | /* Print frame level. MI does not require the level if |
857 | locals/variables only are being printed. */ | |
4b5e8d19 PW |
858 | if (print_level |
859 | && (location_print | |
860 | || (out->is_mi_like_p () && (print_frame_info || print_args)))) | |
1e611234 PM |
861 | { |
862 | struct frame_info **slot; | |
863 | int level; | |
1e611234 | 864 | |
bd2b40ac TT |
865 | slot = (frame_info **) htab_find_slot (levels_printed, |
866 | frame.get(), INSERT); | |
76c939ac TT |
867 | |
868 | level = frame_relative_level (frame); | |
869 | ||
870 | /* Check if this frame has already been printed (there are cases | |
871 | where elided synthetic dummy-frames have to 'borrow' the frame | |
872 | architecture from the eliding frame. If that is the case, do | |
873 | not print 'level', but print spaces. */ | |
874 | if (*slot == frame) | |
875 | out->field_skip ("level"); | |
876 | else | |
1e611234 | 877 | { |
bd2b40ac | 878 | *slot = frame.get (); |
76c939ac TT |
879 | annotate_frame_begin (print_level ? level : 0, |
880 | gdbarch, address); | |
881 | out->text ("#"); | |
381befee | 882 | out->field_fmt_signed (2, ui_left, "level", level); |
1e611234 PM |
883 | } |
884 | } | |
885 | ||
4b5e8d19 | 886 | if (location_print || (out->is_mi_like_p () && print_frame_info)) |
1e611234 PM |
887 | { |
888 | /* Print address to the address field. If an address is not provided, | |
889 | print nothing. */ | |
890 | if (opts.addressprint && has_addr) | |
891 | { | |
4b5e8d19 PW |
892 | if (!sal.symtab |
893 | || frame_show_address (frame, sal) | |
894 | || print_what == LOC_AND_ADDRESS) | |
895 | { | |
896 | annotate_frame_address (); | |
897 | out->field_core_addr ("addr", gdbarch, address); | |
3d31bc39 AH |
898 | if (get_frame_pc_masked (frame)) |
899 | out->field_string ("pac", " [PAC]"); | |
4b5e8d19 PW |
900 | annotate_frame_address_end (); |
901 | out->text (" in "); | |
902 | } | |
1e611234 PM |
903 | } |
904 | ||
905 | /* Print frame function name. */ | |
906 | if (PyObject_HasAttrString (filter, "function")) | |
907 | { | |
7780f186 | 908 | gdbpy_ref<> py_func (PyObject_CallMethod (filter, "function", NULL)); |
34019068 | 909 | const char *function = NULL; |
1e611234 | 910 | |
34019068 | 911 | if (py_func == NULL) |
d4b0bb18 | 912 | return EXT_LANG_BT_ERROR; |
1e611234 | 913 | |
3b4e0e01 | 914 | if (gdbpy_is_string (py_func.get ())) |
34019068 | 915 | { |
3b4e0e01 | 916 | function_to_free = python_string_to_host_string (py_func.get ()); |
1e611234 | 917 | |
9b972014 | 918 | if (function_to_free == NULL) |
d4b0bb18 | 919 | return EXT_LANG_BT_ERROR; |
9b972014 TT |
920 | |
921 | function = function_to_free.get (); | |
34019068 | 922 | } |
edae3fd6 | 923 | else if (PyLong_Check (py_func.get ())) |
34019068 | 924 | { |
30a7bb83 | 925 | CORE_ADDR addr; |
34019068 | 926 | struct bound_minimal_symbol msymbol; |
1e611234 | 927 | |
3b4e0e01 | 928 | if (get_addr_from_python (py_func.get (), &addr) < 0) |
d4b0bb18 | 929 | return EXT_LANG_BT_ERROR; |
34019068 JK |
930 | |
931 | msymbol = lookup_minimal_symbol_by_pc (addr); | |
932 | if (msymbol.minsym != NULL) | |
c9d95fa3 | 933 | function = msymbol.minsym->print_name (); |
34019068 JK |
934 | } |
935 | else if (py_func != Py_None) | |
936 | { | |
937 | PyErr_SetString (PyExc_RuntimeError, | |
938 | _("FrameDecorator.function: expecting a " \ | |
939 | "String, integer or None.")); | |
800eb1ce | 940 | return EXT_LANG_BT_ERROR; |
1e611234 | 941 | } |
34019068 | 942 | |
76c939ac TT |
943 | annotate_frame_function_name (); |
944 | if (function == NULL) | |
945 | out->field_skip ("func"); | |
946 | else | |
e43b10e1 | 947 | out->field_string ("func", function, function_name_style.style ()); |
1e611234 | 948 | } |
1e611234 PM |
949 | } |
950 | ||
951 | ||
952 | /* Frame arguments. Check the result, and error if something went | |
953 | wrong. */ | |
4b5e8d19 | 954 | if (print_args && (location_print || out->is_mi_like_p ())) |
1e611234 | 955 | { |
6dddc817 | 956 | if (py_print_args (filter, out, args_type, frame) == EXT_LANG_BT_ERROR) |
d4b0bb18 | 957 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
958 | } |
959 | ||
960 | /* File name/source/line number information. */ | |
4b5e8d19 PW |
961 | bool print_location_source |
962 | = ((location_print && print_what != SHORT_LOCATION) | |
963 | || (out->is_mi_like_p () && print_frame_info)); | |
964 | if (print_location_source) | |
1e611234 | 965 | { |
76c939ac | 966 | annotate_frame_source_begin (); |
1e611234 PM |
967 | |
968 | if (PyObject_HasAttrString (filter, "filename")) | |
969 | { | |
7780f186 | 970 | gdbpy_ref<> py_fn (PyObject_CallMethod (filter, "filename", NULL)); |
8d4a54e2 | 971 | |
34019068 | 972 | if (py_fn == NULL) |
d4b0bb18 | 973 | return EXT_LANG_BT_ERROR; |
34019068 JK |
974 | |
975 | if (py_fn != Py_None) | |
1e611234 | 976 | { |
9b972014 | 977 | gdb::unique_xmalloc_ptr<char> |
3b4e0e01 | 978 | filename (python_string_to_host_string (py_fn.get ())); |
1e611234 | 979 | |
34019068 | 980 | if (filename == NULL) |
d4b0bb18 | 981 | return EXT_LANG_BT_ERROR; |
8f28f522 | 982 | |
6c92c339 | 983 | out->wrap_hint (3); |
76c939ac TT |
984 | out->text (" at "); |
985 | annotate_frame_source_file (); | |
cbe56571 | 986 | out->field_string ("file", filename.get (), |
e43b10e1 | 987 | file_name_style.style ()); |
76c939ac | 988 | annotate_frame_source_file_end (); |
1e611234 | 989 | } |
1e611234 PM |
990 | } |
991 | ||
992 | if (PyObject_HasAttrString (filter, "line")) | |
993 | { | |
7780f186 | 994 | gdbpy_ref<> py_line (PyObject_CallMethod (filter, "line", NULL)); |
1e611234 PM |
995 | int line; |
996 | ||
34019068 | 997 | if (py_line == NULL) |
d4b0bb18 | 998 | return EXT_LANG_BT_ERROR; |
34019068 JK |
999 | |
1000 | if (py_line != Py_None) | |
1e611234 | 1001 | { |
3b4e0e01 | 1002 | line = PyLong_AsLong (py_line.get ()); |
30a7bb83 | 1003 | if (PyErr_Occurred ()) |
d4b0bb18 | 1004 | return EXT_LANG_BT_ERROR; |
30a7bb83 | 1005 | |
76c939ac TT |
1006 | out->text (":"); |
1007 | annotate_frame_source_line (); | |
381befee | 1008 | out->field_signed ("line", line); |
1e611234 | 1009 | } |
1e611234 | 1010 | } |
3bf9c013 | 1011 | if (out->is_mi_like_p ()) |
dda83cd7 SM |
1012 | out->field_string ("arch", |
1013 | (gdbarch_bfd_arch_info (gdbarch))->printable_name); | |
1e611234 PM |
1014 | } |
1015 | ||
4b5e8d19 PW |
1016 | bool source_print |
1017 | = (! out->is_mi_like_p () | |
1018 | && (print_what == SRC_LINE || print_what == SRC_AND_LOC)); | |
1019 | if (source_print) | |
1020 | { | |
1021 | if (print_location_source) | |
1022 | out->text ("\n"); /* Newline after the location source. */ | |
1023 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
1024 | } | |
1025 | ||
1e611234 PM |
1026 | /* For MI we need to deal with the "children" list population of |
1027 | elided frames, so if MI output detected do not send newline. */ | |
112e8700 | 1028 | if (! out->is_mi_like_p ()) |
1e611234 | 1029 | { |
76c939ac | 1030 | annotate_frame_end (); |
4b5e8d19 PW |
1031 | /* print_source_lines has already printed a newline. */ |
1032 | if (!source_print) | |
1033 | out->text ("\n"); | |
1e611234 PM |
1034 | } |
1035 | ||
1036 | if (print_locals) | |
1037 | { | |
1038 | if (py_print_locals (filter, out, args_type, indent, | |
6dddc817 | 1039 | frame) == EXT_LANG_BT_ERROR) |
d4b0bb18 | 1040 | return EXT_LANG_BT_ERROR; |
1e611234 PM |
1041 | } |
1042 | ||
978d6c75 TT |
1043 | if ((flags & PRINT_HIDE) == 0) |
1044 | { | |
1045 | /* Finally recursively print elided frames, if any. */ | |
1046 | gdbpy_ref<> elided (get_py_iter_from_func (filter, "elided")); | |
1047 | if (elided == NULL) | |
1048 | return EXT_LANG_BT_ERROR; | |
1e611234 | 1049 | |
978d6c75 TT |
1050 | if (elided != Py_None) |
1051 | { | |
1052 | PyObject *item; | |
1e611234 | 1053 | |
978d6c75 | 1054 | ui_out_emit_list inner_list_emiter (out, "children"); |
1e611234 | 1055 | |
2038b7fd | 1056 | indent++; |
1e611234 | 1057 | |
978d6c75 TT |
1058 | while ((item = PyIter_Next (elided.get ()))) |
1059 | { | |
1060 | gdbpy_ref<> item_ref (item); | |
b99bf4e3 | 1061 | |
978d6c75 TT |
1062 | enum ext_lang_bt_status success |
1063 | = py_print_frame (item, flags, args_type, out, indent, | |
1064 | levels_printed); | |
1e611234 | 1065 | |
978d6c75 TT |
1066 | if (success == EXT_LANG_BT_ERROR) |
1067 | return EXT_LANG_BT_ERROR; | |
1068 | } | |
1069 | if (item == NULL && PyErr_Occurred ()) | |
1070 | return EXT_LANG_BT_ERROR; | |
1071 | } | |
1072 | } | |
1e611234 | 1073 | |
63283d4a | 1074 | return EXT_LANG_BT_OK; |
1e611234 PM |
1075 | } |
1076 | ||
1077 | /* Helper function to initiate frame filter invocation at starting | |
1078 | frame FRAME. */ | |
1079 | ||
1080 | static PyObject * | |
bd2b40ac | 1081 | bootstrap_python_frame_filters (frame_info_ptr frame, |
1e611234 PM |
1082 | int frame_low, int frame_high) |
1083 | { | |
7780f186 | 1084 | gdbpy_ref<> frame_obj (frame_info_to_frame_object (frame)); |
1e611234 | 1085 | if (frame_obj == NULL) |
ee0a3fb8 | 1086 | return NULL; |
1e611234 | 1087 | |
7780f186 | 1088 | gdbpy_ref<> module (PyImport_ImportModule ("gdb.frames")); |
1e611234 | 1089 | if (module == NULL) |
ee0a3fb8 | 1090 | return NULL; |
1e611234 | 1091 | |
7780f186 TT |
1092 | gdbpy_ref<> sort_func (PyObject_GetAttrString (module.get (), |
1093 | "execute_frame_filters")); | |
1e611234 | 1094 | if (sort_func == NULL) |
ee0a3fb8 | 1095 | return NULL; |
1e611234 | 1096 | |
47f0e2ff | 1097 | gdbpy_ref<> py_frame_low = gdb_py_object_from_longest (frame_low); |
1e611234 | 1098 | if (py_frame_low == NULL) |
ee0a3fb8 | 1099 | return NULL; |
1e611234 | 1100 | |
47f0e2ff | 1101 | gdbpy_ref<> py_frame_high = gdb_py_object_from_longest (frame_high); |
1e611234 | 1102 | if (py_frame_high == NULL) |
ee0a3fb8 | 1103 | return NULL; |
1e611234 | 1104 | |
7780f186 TT |
1105 | gdbpy_ref<> iterable (PyObject_CallFunctionObjArgs (sort_func.get (), |
1106 | frame_obj.get (), | |
1107 | py_frame_low.get (), | |
1108 | py_frame_high.get (), | |
1109 | NULL)); | |
1e611234 | 1110 | if (iterable == NULL) |
ee0a3fb8 | 1111 | return NULL; |
1e611234 PM |
1112 | |
1113 | if (iterable != Py_None) | |
ee0a3fb8 | 1114 | return PyObject_GetIter (iterable.get ()); |
1e611234 | 1115 | else |
ee0a3fb8 | 1116 | return iterable.release (); |
1e611234 PM |
1117 | } |
1118 | ||
1119 | /* This is the only publicly exported function in this file. FRAME | |
1120 | is the source frame to start frame-filter invocation. FLAGS is an | |
1121 | integer holding the flags for printing. The following elements of | |
1122 | the FRAME_FILTER_FLAGS enum denotes the make-up of FLAGS: | |
1123 | PRINT_LEVEL is a flag indicating whether to print the frame's | |
1124 | relative level in the output. PRINT_FRAME_INFO is a flag that | |
1125 | indicates whether this function should print the frame | |
1126 | information, PRINT_ARGS is a flag that indicates whether to print | |
1127 | frame arguments, and PRINT_LOCALS, likewise, with frame local | |
1128 | variables. ARGS_TYPE is an enumerator describing the argument | |
1129 | format, OUT is the output stream to print. FRAME_LOW is the | |
1130 | beginning of the slice of frames to print, and FRAME_HIGH is the | |
6dddc817 | 1131 | upper limit of the frames to count. Returns EXT_LANG_BT_ERROR on error, |
63283d4a | 1132 | or EXT_LANG_BT_OK on success. */ |
6dddc817 DE |
1133 | |
1134 | enum ext_lang_bt_status | |
1135 | gdbpy_apply_frame_filter (const struct extension_language_defn *extlang, | |
bd2b40ac | 1136 | frame_info_ptr frame, frame_filter_flags flags, |
6dddc817 DE |
1137 | enum ext_lang_frame_args args_type, |
1138 | struct ui_out *out, int frame_low, int frame_high) | |
1e611234 PM |
1139 | { |
1140 | struct gdbarch *gdbarch = NULL; | |
6dddc817 | 1141 | enum ext_lang_bt_status success = EXT_LANG_BT_ERROR; |
1e611234 | 1142 | |
8ee002df | 1143 | if (!gdb_python_initialized) |
6dddc817 | 1144 | return EXT_LANG_BT_NO_FILTERS; |
8ee002df | 1145 | |
a70b8144 | 1146 | try |
1e611234 PM |
1147 | { |
1148 | gdbarch = get_frame_arch (frame); | |
1149 | } | |
230d2906 | 1150 | catch (const gdb_exception_error &except) |
1e611234 | 1151 | { |
21909fa1 | 1152 | /* Let gdb try to print the stack trace. */ |
6dddc817 | 1153 | return EXT_LANG_BT_NO_FILTERS; |
1e611234 PM |
1154 | } |
1155 | ||
1da5d0e6 | 1156 | gdbpy_enter enter_py (gdbarch); |
21909fa1 | 1157 | |
6893c19a TT |
1158 | /* When we're limiting the number of frames, be careful to request |
1159 | one extra frame, so that we can print a message if there are more | |
1160 | frames. */ | |
1161 | int frame_countdown = -1; | |
1162 | if ((flags & PRINT_MORE_FRAMES) != 0 && frame_low >= 0 && frame_high >= 0) | |
1163 | { | |
1164 | ++frame_high; | |
1165 | /* This has an extra +1 because it is checked before a frame is | |
1166 | printed. */ | |
1167 | frame_countdown = frame_high - frame_low + 1; | |
1168 | } | |
1169 | ||
7780f186 TT |
1170 | gdbpy_ref<> iterable (bootstrap_python_frame_filters (frame, frame_low, |
1171 | frame_high)); | |
1e611234 PM |
1172 | |
1173 | if (iterable == NULL) | |
8ee002df PM |
1174 | { |
1175 | /* Normally if there is an error GDB prints the exception, | |
1176 | abandons the backtrace and exits. The user can then call "bt | |
1177 | no-filters", and get a default backtrace (it would be | |
1178 | confusing to automatically start a standard backtrace halfway | |
1179 | through a Python filtered backtrace). However in the case | |
1180 | where GDB cannot initialize the frame filters (most likely | |
1181 | due to incorrect auto-load paths), GDB has printed nothing. | |
1182 | In this case it is OK to print the default backtrace after | |
6dddc817 | 1183 | printing the error message. GDB returns EXT_LANG_BT_NO_FILTERS |
8ee002df PM |
1184 | here to signify there are no filters after printing the |
1185 | initialization error. This return code will trigger a | |
1186 | default backtrace. */ | |
1187 | ||
6ef2312a | 1188 | gdbpy_print_stack_or_quit (); |
6dddc817 | 1189 | return EXT_LANG_BT_NO_FILTERS; |
8ee002df | 1190 | } |
1e611234 PM |
1191 | |
1192 | /* If iterable is None, then there are no frame filters registered. | |
1193 | If this is the case, defer to default GDB printing routines in MI | |
1194 | and CLI. */ | |
1e611234 | 1195 | if (iterable == Py_None) |
6349f452 | 1196 | return EXT_LANG_BT_NO_FILTERS; |
1e611234 | 1197 | |
6349f452 TT |
1198 | htab_up levels_printed (htab_create (20, |
1199 | htab_hash_pointer, | |
1200 | htab_eq_pointer, | |
1201 | NULL)); | |
1e611234 | 1202 | |
6349f452 | 1203 | while (true) |
1e611234 | 1204 | { |
7780f186 | 1205 | gdbpy_ref<> item (PyIter_Next (iterable.get ())); |
b99bf4e3 | 1206 | |
6349f452 TT |
1207 | if (item == NULL) |
1208 | { | |
1209 | if (PyErr_Occurred ()) | |
1210 | { | |
6ef2312a | 1211 | gdbpy_print_stack_or_quit (); |
6349f452 TT |
1212 | return EXT_LANG_BT_ERROR; |
1213 | } | |
1214 | break; | |
1215 | } | |
1e611234 | 1216 | |
6893c19a TT |
1217 | if (frame_countdown != -1) |
1218 | { | |
1219 | gdb_assert ((flags & PRINT_MORE_FRAMES) != 0); | |
1220 | --frame_countdown; | |
1221 | if (frame_countdown == 0) | |
1222 | { | |
1223 | /* We've printed all the frames we were asked to | |
1224 | print, but more frames existed. */ | |
6cb06a8c | 1225 | gdb_printf (_("(More stack frames follow...)\n")); |
6893c19a TT |
1226 | break; |
1227 | } | |
1228 | } | |
1229 | ||
a70b8144 | 1230 | try |
76c939ac TT |
1231 | { |
1232 | success = py_print_frame (item.get (), flags, args_type, out, 0, | |
1233 | levels_printed.get ()); | |
1234 | } | |
230d2906 | 1235 | catch (const gdb_exception_error &except) |
76c939ac TT |
1236 | { |
1237 | gdbpy_convert_exception (except); | |
1238 | success = EXT_LANG_BT_ERROR; | |
1239 | } | |
b99bf4e3 | 1240 | |
1e611234 PM |
1241 | /* Do not exit on error printing a single frame. Print the |
1242 | error and continue with other frames. */ | |
6dddc817 | 1243 | if (success == EXT_LANG_BT_ERROR) |
6ef2312a | 1244 | gdbpy_print_stack_or_quit (); |
1e611234 PM |
1245 | } |
1246 | ||
1e611234 | 1247 | return success; |
1e611234 | 1248 | } |