Commit | Line | Data |
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fb40c209 | 1 | /* MI Command Set - stack commands. |
b811d2c2 | 2 | Copyright (C) 2000-2020 Free Software Foundation, Inc. |
ab91fdd5 | 3 | Contributed by Cygnus Solutions (a Red Hat company). |
fb40c209 AC |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
fb40c209 AC |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
fb40c209 AC |
19 | |
20 | #include "defs.h" | |
21 | #include "target.h" | |
22 | #include "frame.h" | |
23 | #include "value.h" | |
24 | #include "mi-cmds.h" | |
25 | #include "ui-out.h" | |
e88c90f2 | 26 | #include "symtab.h" |
fe898f56 | 27 | #include "block.h" |
b9362cc7 | 28 | #include "stack.h" |
de4f826b | 29 | #include "dictionary.h" |
d8ca156b | 30 | #include "language.h" |
79a45b7d | 31 | #include "valprint.h" |
1e611234 PM |
32 | #include "utils.h" |
33 | #include "mi-getopt.h" | |
6dddc817 | 34 | #include "extension.h" |
1e611234 | 35 | #include <ctype.h> |
87967e27 | 36 | #include "mi-parse.h" |
268a13a5 | 37 | #include "gdbsupport/gdb_optional.h" |
f67ffa6a | 38 | #include "safe-ctype.h" |
daf3c977 VP |
39 | |
40 | enum what_to_list { locals, arguments, all }; | |
41 | ||
d4c16835 PA |
42 | static void list_args_or_locals (const frame_print_options &fp_opts, |
43 | enum what_to_list what, | |
bdaf8d4a | 44 | enum print_values values, |
6211c335 YQ |
45 | struct frame_info *fi, |
46 | int skip_unavailable); | |
fb40c209 | 47 | |
1e611234 PM |
48 | /* True if we want to allow Python-based frame filters. */ |
49 | static int frame_filters = 0; | |
50 | ||
51 | void | |
9f33b8b7 | 52 | mi_cmd_enable_frame_filters (const char *command, char **argv, int argc) |
1e611234 PM |
53 | { |
54 | if (argc != 0) | |
55 | error (_("-enable-frame-filters: no arguments allowed")); | |
56 | frame_filters = 1; | |
57 | } | |
58 | ||
10367c7c PA |
59 | /* Like apply_ext_lang_frame_filter, but take a print_values */ |
60 | ||
61 | static enum ext_lang_bt_status | |
d4dd3282 TT |
62 | mi_apply_ext_lang_frame_filter (struct frame_info *frame, |
63 | frame_filter_flags flags, | |
10367c7c PA |
64 | enum print_values print_values, |
65 | struct ui_out *out, | |
66 | int frame_low, int frame_high) | |
67 | { | |
68 | /* ext_lang_frame_args's MI options are compatible with MI print | |
69 | values. */ | |
70 | return apply_ext_lang_frame_filter (frame, flags, | |
71 | (enum ext_lang_frame_args) print_values, | |
72 | out, | |
73 | frame_low, frame_high); | |
74 | } | |
75 | ||
2b03b41d | 76 | /* Print a list of the stack frames. Args can be none, in which case |
fb40c209 AC |
77 | we want to print the whole backtrace, or a pair of numbers |
78 | specifying the frame numbers at which to start and stop the | |
2b03b41d SS |
79 | display. If the two numbers are equal, a single frame will be |
80 | displayed. */ | |
81 | ||
ce8f13f8 | 82 | void |
9f33b8b7 | 83 | mi_cmd_stack_list_frames (const char *command, char **argv, int argc) |
fb40c209 AC |
84 | { |
85 | int frame_low; | |
86 | int frame_high; | |
87 | int i; | |
88 | struct frame_info *fi; | |
6dddc817 | 89 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
1e611234 PM |
90 | int raw_arg = 0; |
91 | int oind = 0; | |
92 | enum opt | |
93 | { | |
94 | NO_FRAME_FILTERS | |
95 | }; | |
96 | static const struct mi_opt opts[] = | |
97 | { | |
98 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, | |
99 | { 0, 0, 0 } | |
100 | }; | |
101 | ||
102 | /* Parse arguments. In this instance we are just looking for | |
103 | --no-frame-filters. */ | |
104 | while (1) | |
105 | { | |
106 | char *oarg; | |
107 | int opt = mi_getopt ("-stack-list-frames", argc, argv, | |
108 | opts, &oind, &oarg); | |
109 | if (opt < 0) | |
110 | break; | |
111 | switch ((enum opt) opt) | |
112 | { | |
113 | case NO_FRAME_FILTERS: | |
114 | raw_arg = oind; | |
115 | break; | |
116 | } | |
117 | } | |
fb40c209 | 118 | |
1e611234 PM |
119 | /* After the last option is parsed, there should either be low - |
120 | high range, or no further arguments. */ | |
121 | if ((argc - oind != 0) && (argc - oind != 2)) | |
122 | error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]")); | |
fb40c209 | 123 | |
1e611234 PM |
124 | /* If there is a range, set it. */ |
125 | if (argc - oind == 2) | |
fb40c209 | 126 | { |
1e611234 PM |
127 | frame_low = atoi (argv[0 + oind]); |
128 | frame_high = atoi (argv[1 + oind]); | |
fb40c209 AC |
129 | } |
130 | else | |
131 | { | |
132 | /* Called with no arguments, it means we want the whole | |
2b03b41d | 133 | backtrace. */ |
fb40c209 AC |
134 | frame_low = -1; |
135 | frame_high = -1; | |
136 | } | |
137 | ||
138 | /* Let's position fi on the frame at which to start the | |
139 | display. Could be the innermost frame if the whole stack needs | |
2b03b41d | 140 | displaying, or if frame_low is 0. */ |
fb40c209 AC |
141 | for (i = 0, fi = get_current_frame (); |
142 | fi && i < frame_low; | |
143 | i++, fi = get_prev_frame (fi)); | |
144 | ||
145 | if (fi == NULL) | |
1b05df00 | 146 | error (_("-stack-list-frames: Not enough frames in stack.")); |
fb40c209 | 147 | |
10f489e5 | 148 | ui_out_emit_list list_emitter (current_uiout, "stack"); |
fb40c209 | 149 | |
1e611234 | 150 | if (! raw_arg && frame_filters) |
fb40c209 | 151 | { |
d4dd3282 | 152 | frame_filter_flags flags = PRINT_LEVEL | PRINT_FRAME_INFO; |
1e611234 PM |
153 | int py_frame_low = frame_low; |
154 | ||
155 | /* We cannot pass -1 to frame_low, as that would signify a | |
156 | relative backtrace from the tail of the stack. So, in the case | |
157 | of frame_low == -1, assign and increment it. */ | |
158 | if (py_frame_low == -1) | |
159 | py_frame_low++; | |
160 | ||
6dddc817 DE |
161 | result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
162 | NO_VALUES, current_uiout, | |
163 | py_frame_low, frame_high); | |
1e611234 PM |
164 | } |
165 | ||
166 | /* Run the inbuilt backtrace if there are no filters registered, or | |
167 | if "--no-frame-filters" has been specified from the command. */ | |
6dddc817 | 168 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 PM |
169 | { |
170 | /* Now let's print the frames up to frame_high, or until there are | |
171 | frames in the stack. */ | |
172 | for (; | |
173 | fi && (i <= frame_high || frame_high == -1); | |
174 | i++, fi = get_prev_frame (fi)) | |
175 | { | |
176 | QUIT; | |
177 | /* Print the location and the address always, even for level 0. | |
178 | If args is 0, don't print the arguments. */ | |
d4c16835 PA |
179 | print_frame_info (user_frame_print_options, |
180 | fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0); | |
1e611234 | 181 | } |
fb40c209 | 182 | } |
fb40c209 AC |
183 | } |
184 | ||
ce8f13f8 | 185 | void |
9f33b8b7 | 186 | mi_cmd_stack_info_depth (const char *command, char **argv, int argc) |
fb40c209 AC |
187 | { |
188 | int frame_high; | |
189 | int i; | |
190 | struct frame_info *fi; | |
191 | ||
fb40c209 | 192 | if (argc > 1) |
1b05df00 | 193 | error (_("-stack-info-depth: Usage: [MAX_DEPTH]")); |
fb40c209 AC |
194 | |
195 | if (argc == 1) | |
196 | frame_high = atoi (argv[0]); | |
197 | else | |
198 | /* Called with no arguments, it means we want the real depth of | |
2b03b41d | 199 | the stack. */ |
fb40c209 AC |
200 | frame_high = -1; |
201 | ||
202 | for (i = 0, fi = get_current_frame (); | |
203 | fi && (i < frame_high || frame_high == -1); | |
204 | i++, fi = get_prev_frame (fi)) | |
205 | QUIT; | |
206 | ||
381befee | 207 | current_uiout->field_signed ("depth", i); |
fb40c209 AC |
208 | } |
209 | ||
7a93fb82 | 210 | /* Print a list of the locals for the current frame. With argument of |
fb40c209 | 211 | 0, print only the names, with argument of 1 print also the |
2b03b41d SS |
212 | values. */ |
213 | ||
ce8f13f8 | 214 | void |
9f33b8b7 | 215 | mi_cmd_stack_list_locals (const char *command, char **argv, int argc) |
fb40c209 | 216 | { |
f5ec2042 | 217 | struct frame_info *frame; |
1e611234 | 218 | int raw_arg = 0; |
6dddc817 | 219 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
f486487f | 220 | enum print_values print_value; |
645eab03 | 221 | int oind = 0; |
6211c335 | 222 | int skip_unavailable = 0; |
f5ec2042 | 223 | |
645eab03 YQ |
224 | if (argc > 1) |
225 | { | |
645eab03 YQ |
226 | enum opt |
227 | { | |
6211c335 YQ |
228 | NO_FRAME_FILTERS, |
229 | SKIP_UNAVAILABLE, | |
645eab03 YQ |
230 | }; |
231 | static const struct mi_opt opts[] = | |
232 | { | |
233 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, | |
6211c335 | 234 | {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
645eab03 YQ |
235 | { 0, 0, 0 } |
236 | }; | |
237 | ||
238 | while (1) | |
239 | { | |
240 | char *oarg; | |
241 | /* Don't parse 'print-values' as an option. */ | |
242 | int opt = mi_getopt ("-stack-list-locals", argc - 1, argv, | |
243 | opts, &oind, &oarg); | |
244 | ||
245 | if (opt < 0) | |
246 | break; | |
247 | switch ((enum opt) opt) | |
248 | { | |
249 | case NO_FRAME_FILTERS: | |
250 | raw_arg = oind; | |
15c9ffd6 | 251 | break; |
6211c335 YQ |
252 | case SKIP_UNAVAILABLE: |
253 | skip_unavailable = 1; | |
645eab03 YQ |
254 | break; |
255 | } | |
256 | } | |
257 | } | |
fb40c209 | 258 | |
645eab03 YQ |
259 | /* After the last option is parsed, there should be only |
260 | 'print-values'. */ | |
261 | if (argc - oind != 1) | |
6211c335 YQ |
262 | error (_("-stack-list-locals: Usage: [--no-frame-filters] " |
263 | "[--skip-unavailable] PRINT_VALUES")); | |
f5ec2042 | 264 | |
1e611234 | 265 | frame = get_selected_frame (NULL); |
645eab03 | 266 | print_value = mi_parse_print_values (argv[oind]); |
1e611234 PM |
267 | |
268 | if (! raw_arg && frame_filters) | |
269 | { | |
d4dd3282 | 270 | frame_filter_flags flags = PRINT_LEVEL | PRINT_LOCALS; |
1e611234 | 271 | |
10367c7c PA |
272 | result = mi_apply_ext_lang_frame_filter (frame, flags, print_value, |
273 | current_uiout, 0, 0); | |
1e611234 PM |
274 | } |
275 | ||
276 | /* Run the inbuilt backtrace if there are no filters registered, or | |
277 | if "--no-frame-filters" has been specified from the command. */ | |
6dddc817 | 278 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 | 279 | { |
d4c16835 PA |
280 | list_args_or_locals (user_frame_print_options, |
281 | locals, print_value, frame, | |
6211c335 | 282 | skip_unavailable); |
1e611234 | 283 | } |
fb40c209 AC |
284 | } |
285 | ||
7a93fb82 | 286 | /* Print a list of the arguments for the current frame. With argument |
fb40c209 | 287 | of 0, print only the names, with argument of 1 print also the |
2b03b41d SS |
288 | values. */ |
289 | ||
ce8f13f8 | 290 | void |
9f33b8b7 | 291 | mi_cmd_stack_list_args (const char *command, char **argv, int argc) |
fb40c209 AC |
292 | { |
293 | int frame_low; | |
294 | int frame_high; | |
295 | int i; | |
296 | struct frame_info *fi; | |
8b777f02 | 297 | enum print_values print_values; |
79a45e25 | 298 | struct ui_out *uiout = current_uiout; |
1e611234 | 299 | int raw_arg = 0; |
242f1fd7 | 300 | int oind = 0; |
6211c335 | 301 | int skip_unavailable = 0; |
6dddc817 | 302 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
242f1fd7 YQ |
303 | enum opt |
304 | { | |
305 | NO_FRAME_FILTERS, | |
6211c335 | 306 | SKIP_UNAVAILABLE, |
242f1fd7 YQ |
307 | }; |
308 | static const struct mi_opt opts[] = | |
309 | { | |
310 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, | |
6211c335 | 311 | {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
242f1fd7 YQ |
312 | { 0, 0, 0 } |
313 | }; | |
314 | ||
315 | while (1) | |
316 | { | |
317 | char *oarg; | |
318 | int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv, | |
319 | opts, &oind, &oarg); | |
fb40c209 | 320 | |
242f1fd7 YQ |
321 | if (opt < 0) |
322 | break; | |
323 | switch ((enum opt) opt) | |
324 | { | |
325 | case NO_FRAME_FILTERS: | |
326 | raw_arg = oind; | |
327 | break; | |
6211c335 YQ |
328 | case SKIP_UNAVAILABLE: |
329 | skip_unavailable = 1; | |
330 | break; | |
242f1fd7 YQ |
331 | } |
332 | } | |
fb40c209 | 333 | |
242f1fd7 YQ |
334 | if (argc - oind != 1 && argc - oind != 3) |
335 | error (_("-stack-list-arguments: Usage: " \ | |
6211c335 YQ |
336 | "[--no-frame-filters] [--skip-unavailable] " |
337 | "PRINT_VALUES [FRAME_LOW FRAME_HIGH]")); | |
1e611234 | 338 | |
242f1fd7 | 339 | if (argc - oind == 3) |
fb40c209 | 340 | { |
242f1fd7 YQ |
341 | frame_low = atoi (argv[1 + oind]); |
342 | frame_high = atoi (argv[2 + oind]); | |
fb40c209 AC |
343 | } |
344 | else | |
345 | { | |
346 | /* Called with no arguments, it means we want args for the whole | |
2b03b41d | 347 | backtrace. */ |
fb40c209 AC |
348 | frame_low = -1; |
349 | frame_high = -1; | |
350 | } | |
351 | ||
242f1fd7 | 352 | print_values = mi_parse_print_values (argv[oind]); |
8b777f02 | 353 | |
fb40c209 AC |
354 | /* Let's position fi on the frame at which to start the |
355 | display. Could be the innermost frame if the whole stack needs | |
2b03b41d | 356 | displaying, or if frame_low is 0. */ |
fb40c209 AC |
357 | for (i = 0, fi = get_current_frame (); |
358 | fi && i < frame_low; | |
359 | i++, fi = get_prev_frame (fi)); | |
360 | ||
361 | if (fi == NULL) | |
1b05df00 | 362 | error (_("-stack-list-arguments: Not enough frames in stack.")); |
fb40c209 | 363 | |
10f489e5 | 364 | ui_out_emit_list list_emitter (uiout, "stack-args"); |
fb40c209 | 365 | |
1e611234 | 366 | if (! raw_arg && frame_filters) |
fb40c209 | 367 | { |
d4dd3282 | 368 | frame_filter_flags flags = PRINT_LEVEL | PRINT_ARGS; |
1e611234 PM |
369 | int py_frame_low = frame_low; |
370 | ||
371 | /* We cannot pass -1 to frame_low, as that would signify a | |
372 | relative backtrace from the tail of the stack. So, in the case | |
373 | of frame_low == -1, assign and increment it. */ | |
374 | if (py_frame_low == -1) | |
375 | py_frame_low++; | |
376 | ||
10367c7c PA |
377 | result = mi_apply_ext_lang_frame_filter (get_current_frame (), flags, |
378 | print_values, current_uiout, | |
379 | py_frame_low, frame_high); | |
fb40c209 AC |
380 | } |
381 | ||
1e611234 PM |
382 | /* Run the inbuilt backtrace if there are no filters registered, or |
383 | if "--no-frame-filters" has been specified from the command. */ | |
6dddc817 | 384 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 PM |
385 | { |
386 | /* Now let's print the frames up to frame_high, or until there are | |
387 | frames in the stack. */ | |
388 | for (; | |
389 | fi && (i <= frame_high || frame_high == -1); | |
390 | i++, fi = get_prev_frame (fi)) | |
391 | { | |
1e611234 | 392 | QUIT; |
2e783024 | 393 | ui_out_emit_tuple tuple_emitter (uiout, "frame"); |
381befee | 394 | uiout->field_signed ("level", i); |
d4c16835 PA |
395 | list_args_or_locals (user_frame_print_options, |
396 | arguments, print_values, fi, skip_unavailable); | |
1e611234 PM |
397 | } |
398 | } | |
fb40c209 AC |
399 | } |
400 | ||
daf3c977 | 401 | /* Print a list of the local variables (including arguments) for the |
7a93fb82 VP |
402 | current frame. ARGC must be 1 and ARGV[0] specify if only the names, |
403 | or both names and values of the variables must be printed. See | |
404 | parse_print_value for possible values. */ | |
2b03b41d | 405 | |
daf3c977 | 406 | void |
9f33b8b7 | 407 | mi_cmd_stack_list_variables (const char *command, char **argv, int argc) |
daf3c977 VP |
408 | { |
409 | struct frame_info *frame; | |
1e611234 | 410 | int raw_arg = 0; |
6dddc817 | 411 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
f486487f | 412 | enum print_values print_value; |
645eab03 | 413 | int oind = 0; |
6211c335 | 414 | int skip_unavailable = 0; |
daf3c977 | 415 | |
645eab03 YQ |
416 | if (argc > 1) |
417 | { | |
645eab03 YQ |
418 | enum opt |
419 | { | |
6211c335 YQ |
420 | NO_FRAME_FILTERS, |
421 | SKIP_UNAVAILABLE, | |
645eab03 YQ |
422 | }; |
423 | static const struct mi_opt opts[] = | |
424 | { | |
425 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, | |
6211c335 | 426 | {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
645eab03 YQ |
427 | { 0, 0, 0 } |
428 | }; | |
429 | ||
430 | while (1) | |
431 | { | |
432 | char *oarg; | |
433 | /* Don't parse 'print-values' as an option. */ | |
434 | int opt = mi_getopt ("-stack-list-variables", argc - 1, | |
435 | argv, opts, &oind, &oarg); | |
436 | if (opt < 0) | |
437 | break; | |
438 | switch ((enum opt) opt) | |
439 | { | |
440 | case NO_FRAME_FILTERS: | |
441 | raw_arg = oind; | |
442 | break; | |
6211c335 YQ |
443 | case SKIP_UNAVAILABLE: |
444 | skip_unavailable = 1; | |
445 | break; | |
645eab03 YQ |
446 | } |
447 | } | |
448 | } | |
daf3c977 | 449 | |
645eab03 YQ |
450 | /* After the last option is parsed, there should be only |
451 | 'print-values'. */ | |
452 | if (argc - oind != 1) | |
6211c335 YQ |
453 | error (_("-stack-list-variables: Usage: [--no-frame-filters] " \ |
454 | "[--skip-unavailable] PRINT_VALUES")); | |
daf3c977 | 455 | |
1e611234 | 456 | frame = get_selected_frame (NULL); |
645eab03 | 457 | print_value = mi_parse_print_values (argv[oind]); |
1e611234 PM |
458 | |
459 | if (! raw_arg && frame_filters) | |
460 | { | |
d4dd3282 | 461 | frame_filter_flags flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS; |
1e611234 | 462 | |
10367c7c PA |
463 | result = mi_apply_ext_lang_frame_filter (frame, flags, |
464 | print_value, | |
465 | current_uiout, 0, 0); | |
1e611234 PM |
466 | } |
467 | ||
468 | /* Run the inbuilt backtrace if there are no filters registered, or | |
469 | if "--no-frame-filters" has been specified from the command. */ | |
6dddc817 | 470 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 | 471 | { |
d4c16835 PA |
472 | list_args_or_locals (user_frame_print_options, |
473 | all, print_value, frame, | |
6211c335 | 474 | skip_unavailable); |
1e611234 | 475 | } |
daf3c977 VP |
476 | } |
477 | ||
2b03b41d SS |
478 | /* Print single local or argument. ARG must be already read in. For |
479 | WHAT and VALUES see list_args_or_locals. | |
93d86cef | 480 | |
2b03b41d | 481 | Errors are printed as if they would be the parameter value. Use |
6211c335 YQ |
482 | zeroed ARG iff it should not be printed according to VALUES. If |
483 | SKIP_UNAVAILABLE is true, only print ARG if it is available. */ | |
93d86cef JK |
484 | |
485 | static void | |
486 | list_arg_or_local (const struct frame_arg *arg, enum what_to_list what, | |
6211c335 | 487 | enum print_values values, int skip_unavailable) |
93d86cef | 488 | { |
93d86cef | 489 | struct ui_out *uiout = current_uiout; |
f99d8bf4 | 490 | |
93d86cef JK |
491 | gdb_assert (!arg->val || !arg->error); |
492 | gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL | |
493 | && arg->error == NULL) | |
494 | || values == PRINT_SIMPLE_VALUES | |
495 | || (values == PRINT_ALL_VALUES | |
496 | && (arg->val != NULL || arg->error != NULL))); | |
e18b2753 JK |
497 | gdb_assert (arg->entry_kind == print_entry_values_no |
498 | || (arg->entry_kind == print_entry_values_only | |
499 | && (arg->val || arg->error))); | |
93d86cef | 500 | |
6211c335 YQ |
501 | if (skip_unavailable && arg->val != NULL |
502 | && (value_entirely_unavailable (arg->val) | |
503 | /* A scalar object that does not have all bits available is | |
504 | also considered unavailable, because all bits contribute | |
505 | to its representation. */ | |
506 | || (val_print_scalar_type_p (value_type (arg->val)) | |
507 | && !value_bytes_available (arg->val, | |
508 | value_embedded_offset (arg->val), | |
509 | TYPE_LENGTH (value_type (arg->val)))))) | |
510 | return; | |
511 | ||
0092b74d | 512 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
93d86cef | 513 | if (values != PRINT_NO_VALUES || what == all) |
0092b74d | 514 | tuple_emitter.emplace (uiout, nullptr); |
93d86cef | 515 | |
d7e74731 PA |
516 | string_file stb; |
517 | ||
987012b8 | 518 | stb.puts (arg->sym->print_name ()); |
e18b2753 | 519 | if (arg->entry_kind == print_entry_values_only) |
d7e74731 | 520 | stb.puts ("@entry"); |
112e8700 | 521 | uiout->field_stream ("name", stb); |
93d86cef JK |
522 | |
523 | if (what == all && SYMBOL_IS_ARGUMENT (arg->sym)) | |
381befee | 524 | uiout->field_signed ("arg", 1); |
93d86cef JK |
525 | |
526 | if (values == PRINT_SIMPLE_VALUES) | |
527 | { | |
528 | check_typedef (arg->sym->type); | |
d7e74731 | 529 | type_print (arg->sym->type, "", &stb, -1); |
112e8700 | 530 | uiout->field_stream ("type", stb); |
93d86cef JK |
531 | } |
532 | ||
533 | if (arg->val || arg->error) | |
534 | { | |
93d86cef | 535 | if (arg->error) |
123cd851 | 536 | stb.printf (_("<error reading variable: %s>"), arg->error.get ()); |
93d86cef JK |
537 | else |
538 | { | |
a70b8144 | 539 | try |
93d86cef JK |
540 | { |
541 | struct value_print_options opts; | |
542 | ||
2a998fc0 | 543 | get_no_prettyformat_print_options (&opts); |
93d86cef | 544 | opts.deref_ref = 1; |
d7e74731 | 545 | common_val_print (arg->val, &stb, 0, &opts, |
c1b5c1eb | 546 | language_def (arg->sym->language ())); |
93d86cef | 547 | } |
230d2906 | 548 | catch (const gdb_exception_error &except) |
492d29ea | 549 | { |
3d6e9d23 TT |
550 | stb.printf (_("<error reading variable: %s>"), |
551 | except.what ()); | |
492d29ea | 552 | } |
93d86cef | 553 | } |
112e8700 | 554 | uiout->field_stream ("value", stb); |
93d86cef | 555 | } |
93d86cef | 556 | } |
daf3c977 | 557 | |
5c4aa40b YQ |
558 | /* Print a list of the objects for the frame FI in a certain form, |
559 | which is determined by VALUES. The objects can be locals, | |
6211c335 YQ |
560 | arguments or both, which is determined by WHAT. If SKIP_UNAVAILABLE |
561 | is true, only print the arguments or local variables whose values | |
562 | are available. */ | |
2b03b41d | 563 | |
fb40c209 | 564 | static void |
d4c16835 PA |
565 | list_args_or_locals (const frame_print_options &fp_opts, |
566 | enum what_to_list what, enum print_values values, | |
6211c335 | 567 | struct frame_info *fi, int skip_unavailable) |
fb40c209 | 568 | { |
3977b71f | 569 | const struct block *block; |
fb40c209 | 570 | struct symbol *sym; |
8157b174 | 571 | struct block_iterator iter; |
f5ec2042 | 572 | struct type *type; |
a121b7c1 | 573 | const char *name_of_result; |
79a45e25 | 574 | struct ui_out *uiout = current_uiout; |
fb40c209 | 575 | |
ae767bfb | 576 | block = get_frame_block (fi, 0); |
fb40c209 | 577 | |
daf3c977 VP |
578 | switch (what) |
579 | { | |
580 | case locals: | |
d6fd4674 PA |
581 | name_of_result = "locals"; |
582 | break; | |
daf3c977 | 583 | case arguments: |
d6fd4674 PA |
584 | name_of_result = "args"; |
585 | break; | |
daf3c977 | 586 | case all: |
d6fd4674 PA |
587 | name_of_result = "variables"; |
588 | break; | |
654e7c1f | 589 | default: |
d6fd4674 PA |
590 | internal_error (__FILE__, __LINE__, |
591 | "unexpected what_to_list: %d", (int) what); | |
daf3c977 VP |
592 | } |
593 | ||
10f489e5 | 594 | ui_out_emit_list list_emitter (uiout, name_of_result); |
fb40c209 AC |
595 | |
596 | while (block != 0) | |
597 | { | |
de4f826b | 598 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
fb40c209 | 599 | { |
39bf4652 JB |
600 | int print_me = 0; |
601 | ||
fb40c209 AC |
602 | switch (SYMBOL_CLASS (sym)) |
603 | { | |
604 | default: | |
605 | case LOC_UNDEF: /* catches errors */ | |
606 | case LOC_CONST: /* constant */ | |
607 | case LOC_TYPEDEF: /* local typedef */ | |
608 | case LOC_LABEL: /* local label */ | |
609 | case LOC_BLOCK: /* local function */ | |
610 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
611 | case LOC_UNRESOLVED: /* unresolved static */ | |
612 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
613 | print_me = 0; | |
614 | break; | |
615 | ||
616 | case LOC_ARG: /* argument */ | |
617 | case LOC_REF_ARG: /* reference arg */ | |
fb40c209 | 618 | case LOC_REGPARM_ADDR: /* indirect register arg */ |
fb40c209 | 619 | case LOC_LOCAL: /* stack local */ |
fb40c209 AC |
620 | case LOC_STATIC: /* static */ |
621 | case LOC_REGISTER: /* register */ | |
4cf623b6 | 622 | case LOC_COMPUTED: /* computed location */ |
daf3c977 | 623 | if (what == all) |
fb40c209 | 624 | print_me = 1; |
daf3c977 VP |
625 | else if (what == locals) |
626 | print_me = !SYMBOL_IS_ARGUMENT (sym); | |
627 | else | |
628 | print_me = SYMBOL_IS_ARGUMENT (sym); | |
fb40c209 AC |
629 | break; |
630 | } | |
631 | if (print_me) | |
632 | { | |
6bb0384f | 633 | struct symbol *sym2; |
e18b2753 | 634 | struct frame_arg arg, entryarg; |
fb40c209 | 635 | |
daf3c977 | 636 | if (SYMBOL_IS_ARGUMENT (sym)) |
987012b8 | 637 | sym2 = lookup_symbol (sym->linkage_name (), |
f5ec2042 | 638 | block, VAR_DOMAIN, |
d12307c1 | 639 | NULL).symbol; |
f5ec2042 | 640 | else |
2a2d4dc3 | 641 | sym2 = sym; |
f7e44f65 | 642 | gdb_assert (sym2 != NULL); |
93d86cef | 643 | |
93d86cef | 644 | arg.sym = sym2; |
e18b2753 | 645 | arg.entry_kind = print_entry_values_no; |
e18b2753 JK |
646 | entryarg.sym = sym2; |
647 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef | 648 | |
f5ec2042 NR |
649 | switch (values) |
650 | { | |
651 | case PRINT_SIMPLE_VALUES: | |
652 | type = check_typedef (sym2->type); | |
f5ec2042 NR |
653 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
654 | && TYPE_CODE (type) != TYPE_CODE_STRUCT | |
655 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
656 | { | |
f5ec2042 | 657 | case PRINT_ALL_VALUES: |
82a0a75f | 658 | if (SYMBOL_IS_ARGUMENT (sym)) |
d4c16835 | 659 | read_frame_arg (fp_opts, sym2, fi, &arg, &entryarg); |
82a0a75f YQ |
660 | else |
661 | read_frame_local (sym2, fi, &arg); | |
93d86cef | 662 | } |
f5ec2042 | 663 | break; |
fb40c209 | 664 | } |
7a93fb82 | 665 | |
e18b2753 | 666 | if (arg.entry_kind != print_entry_values_only) |
6211c335 | 667 | list_arg_or_local (&arg, what, values, skip_unavailable); |
e18b2753 | 668 | if (entryarg.entry_kind != print_entry_values_no) |
6211c335 | 669 | list_arg_or_local (&entryarg, what, values, skip_unavailable); |
fb40c209 AC |
670 | } |
671 | } | |
2b03b41d | 672 | |
fb40c209 AC |
673 | if (BLOCK_FUNCTION (block)) |
674 | break; | |
675 | else | |
676 | block = BLOCK_SUPERBLOCK (block); | |
677 | } | |
fb40c209 AC |
678 | } |
679 | ||
f67ffa6a AB |
680 | /* Read a frame specification from FRAME_EXP and return the selected frame. |
681 | Call error() if the specification is in any way invalid (so this | |
682 | function never returns NULL). | |
683 | ||
684 | The frame specification is usually an integer level number, however if | |
685 | the number does not match a valid frame level then it will be treated as | |
686 | a frame address. The frame address will then be used to find a matching | |
687 | frame in the stack. If no matching frame is found then a new frame will | |
688 | be created. | |
689 | ||
690 | The use of FRAME_EXP as an address is undocumented in the GDB user | |
691 | manual, this feature is supported here purely for backward | |
692 | compatibility. */ | |
693 | ||
694 | static struct frame_info * | |
695 | parse_frame_specification (const char *frame_exp) | |
696 | { | |
697 | gdb_assert (frame_exp != NULL); | |
698 | ||
699 | /* NOTE: Parse and evaluate expression, but do not use | |
700 | functions such as parse_and_eval_long or | |
701 | parse_and_eval_address to also extract the value. | |
702 | Instead value_as_long and value_as_address are used. | |
703 | This avoids problems with expressions that contain | |
704 | side-effects. */ | |
705 | struct value *arg = parse_and_eval (frame_exp); | |
706 | ||
707 | /* Assume ARG is an integer, and try using that to select a frame. */ | |
708 | struct frame_info *fid; | |
709 | int level = value_as_long (arg); | |
710 | ||
711 | fid = find_relative_frame (get_current_frame (), &level); | |
712 | if (level == 0) | |
713 | /* find_relative_frame was successful. */ | |
714 | return fid; | |
715 | ||
716 | /* Convert the value into a corresponding address. */ | |
717 | CORE_ADDR addr = value_as_address (arg); | |
718 | ||
719 | /* Assume that ADDR is an address, use that to identify a frame with a | |
720 | matching ID. */ | |
721 | struct frame_id id = frame_id_build_wild (addr); | |
722 | ||
723 | /* If (s)he specifies the frame with an address, he deserves | |
724 | what (s)he gets. Still, give the highest one that matches. | |
725 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
726 | know). */ | |
727 | for (fid = get_current_frame (); | |
728 | fid != NULL; | |
729 | fid = get_prev_frame (fid)) | |
730 | { | |
731 | if (frame_id_eq (id, get_frame_id (fid))) | |
732 | { | |
733 | struct frame_info *prev_frame; | |
734 | ||
735 | while (1) | |
736 | { | |
737 | prev_frame = get_prev_frame (fid); | |
738 | if (!prev_frame | |
739 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
740 | break; | |
741 | fid = prev_frame; | |
742 | } | |
743 | return fid; | |
744 | } | |
745 | } | |
746 | ||
747 | /* We couldn't identify the frame as an existing frame, but | |
748 | perhaps we can create one with a single argument. */ | |
749 | return create_new_frame (addr, 0); | |
750 | } | |
751 | ||
752 | /* Implement the -stack-select-frame MI command. */ | |
753 | ||
ce8f13f8 | 754 | void |
9f33b8b7 | 755 | mi_cmd_stack_select_frame (const char *command, char **argv, int argc) |
fb40c209 | 756 | { |
fcf43932 | 757 | if (argc == 0 || argc > 1) |
1b05df00 | 758 | error (_("-stack-select-frame: Usage: FRAME_SPEC")); |
fb40c209 | 759 | |
f67ffa6a | 760 | select_frame_for_mi (parse_frame_specification (argv[0])); |
fb40c209 | 761 | } |
64fd8944 | 762 | |
ce8f13f8 | 763 | void |
9f33b8b7 | 764 | mi_cmd_stack_info_frame (const char *command, char **argv, int argc) |
64fd8944 NR |
765 | { |
766 | if (argc > 0) | |
2b03b41d | 767 | error (_("-stack-info-frame: No arguments allowed")); |
ce8f13f8 | 768 | |
d4c16835 PA |
769 | print_frame_info (user_frame_print_options, |
770 | get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1); | |
64fd8944 | 771 | } |