Commit | Line | Data |
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fb40c209 | 1 | /* MI Command Set - stack commands. |
28e7fd62 | 2 | Copyright (C) 2000-2013 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" |
f5ec2042 | 30 | #include "gdb_string.h" |
d8ca156b | 31 | #include "language.h" |
79a45b7d | 32 | #include "valprint.h" |
875b4ff5 | 33 | #include "exceptions.h" |
daf3c977 VP |
34 | |
35 | enum what_to_list { locals, arguments, all }; | |
36 | ||
37 | static void list_args_or_locals (enum what_to_list what, | |
bdaf8d4a JK |
38 | enum print_values values, |
39 | struct frame_info *fi); | |
fb40c209 | 40 | |
2b03b41d | 41 | /* Print a list of the stack frames. Args can be none, in which case |
fb40c209 AC |
42 | we want to print the whole backtrace, or a pair of numbers |
43 | specifying the frame numbers at which to start and stop the | |
2b03b41d SS |
44 | display. If the two numbers are equal, a single frame will be |
45 | displayed. */ | |
46 | ||
ce8f13f8 | 47 | void |
fb40c209 AC |
48 | mi_cmd_stack_list_frames (char *command, char **argv, int argc) |
49 | { | |
50 | int frame_low; | |
51 | int frame_high; | |
52 | int i; | |
6ad4a2cf | 53 | struct cleanup *cleanup_stack; |
fb40c209 AC |
54 | struct frame_info *fi; |
55 | ||
fb40c209 | 56 | if (argc > 2 || argc == 1) |
1b05df00 | 57 | error (_("-stack-list-frames: Usage: [FRAME_LOW FRAME_HIGH]")); |
fb40c209 AC |
58 | |
59 | if (argc == 2) | |
60 | { | |
61 | frame_low = atoi (argv[0]); | |
62 | frame_high = atoi (argv[1]); | |
63 | } | |
64 | else | |
65 | { | |
66 | /* Called with no arguments, it means we want the whole | |
2b03b41d | 67 | backtrace. */ |
fb40c209 AC |
68 | frame_low = -1; |
69 | frame_high = -1; | |
70 | } | |
71 | ||
72 | /* Let's position fi on the frame at which to start the | |
73 | display. Could be the innermost frame if the whole stack needs | |
2b03b41d | 74 | displaying, or if frame_low is 0. */ |
fb40c209 AC |
75 | for (i = 0, fi = get_current_frame (); |
76 | fi && i < frame_low; | |
77 | i++, fi = get_prev_frame (fi)); | |
78 | ||
79 | if (fi == NULL) | |
1b05df00 | 80 | error (_("-stack-list-frames: Not enough frames in stack.")); |
fb40c209 | 81 | |
79a45e25 | 82 | cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack"); |
fb40c209 | 83 | |
2b03b41d SS |
84 | /* Now let's print the frames up to frame_high, or until there are |
85 | frames in the stack. */ | |
fb40c209 AC |
86 | for (; |
87 | fi && (i <= frame_high || frame_high == -1); | |
88 | i++, fi = get_prev_frame (fi)) | |
89 | { | |
90 | QUIT; | |
0faf0076 | 91 | /* Print the location and the address always, even for level 0. |
2b03b41d | 92 | If args is 0, don't print the arguments. */ |
0faf0076 | 93 | print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */ ); |
fb40c209 AC |
94 | } |
95 | ||
6ad4a2cf | 96 | do_cleanups (cleanup_stack); |
fb40c209 AC |
97 | } |
98 | ||
ce8f13f8 | 99 | void |
fb40c209 AC |
100 | mi_cmd_stack_info_depth (char *command, char **argv, int argc) |
101 | { | |
102 | int frame_high; | |
103 | int i; | |
104 | struct frame_info *fi; | |
105 | ||
fb40c209 | 106 | if (argc > 1) |
1b05df00 | 107 | error (_("-stack-info-depth: Usage: [MAX_DEPTH]")); |
fb40c209 AC |
108 | |
109 | if (argc == 1) | |
110 | frame_high = atoi (argv[0]); | |
111 | else | |
112 | /* Called with no arguments, it means we want the real depth of | |
2b03b41d | 113 | the stack. */ |
fb40c209 AC |
114 | frame_high = -1; |
115 | ||
116 | for (i = 0, fi = get_current_frame (); | |
117 | fi && (i < frame_high || frame_high == -1); | |
118 | i++, fi = get_prev_frame (fi)) | |
119 | QUIT; | |
120 | ||
79a45e25 | 121 | ui_out_field_int (current_uiout, "depth", i); |
fb40c209 AC |
122 | } |
123 | ||
8b777f02 VP |
124 | static enum print_values |
125 | parse_print_values (char *name) | |
126 | { | |
127 | if (strcmp (name, "0") == 0 | |
128 | || strcmp (name, mi_no_values) == 0) | |
129 | return PRINT_NO_VALUES; | |
130 | else if (strcmp (name, "1") == 0 | |
131 | || strcmp (name, mi_all_values) == 0) | |
132 | return PRINT_ALL_VALUES; | |
133 | else if (strcmp (name, "2") == 0 | |
134 | || strcmp (name, mi_simple_values) == 0) | |
135 | return PRINT_SIMPLE_VALUES; | |
136 | else | |
137 | error (_("Unknown value for PRINT_VALUES: must be: \ | |
138 | 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""), | |
139 | mi_no_values, mi_all_values, mi_simple_values); | |
140 | } | |
141 | ||
7a93fb82 | 142 | /* Print a list of the locals for the current frame. With argument of |
fb40c209 | 143 | 0, print only the names, with argument of 1 print also the |
2b03b41d SS |
144 | values. */ |
145 | ||
ce8f13f8 | 146 | void |
fb40c209 AC |
147 | mi_cmd_stack_list_locals (char *command, char **argv, int argc) |
148 | { | |
f5ec2042 | 149 | struct frame_info *frame; |
f5ec2042 | 150 | |
fb40c209 | 151 | if (argc != 1) |
1b05df00 | 152 | error (_("-stack-list-locals: Usage: PRINT_VALUES")); |
fb40c209 | 153 | |
b04f3ab4 | 154 | frame = get_selected_frame (NULL); |
f5ec2042 | 155 | |
daf3c977 | 156 | list_args_or_locals (locals, parse_print_values (argv[0]), frame); |
fb40c209 AC |
157 | } |
158 | ||
7a93fb82 | 159 | /* Print a list of the arguments for the current frame. With argument |
fb40c209 | 160 | of 0, print only the names, with argument of 1 print also the |
2b03b41d SS |
161 | values. */ |
162 | ||
ce8f13f8 | 163 | void |
fb40c209 AC |
164 | mi_cmd_stack_list_args (char *command, char **argv, int argc) |
165 | { | |
166 | int frame_low; | |
167 | int frame_high; | |
168 | int i; | |
169 | struct frame_info *fi; | |
6ad4a2cf | 170 | struct cleanup *cleanup_stack_args; |
8b777f02 | 171 | enum print_values print_values; |
79a45e25 | 172 | struct ui_out *uiout = current_uiout; |
fb40c209 AC |
173 | |
174 | if (argc < 1 || argc > 3 || argc == 2) | |
1b05df00 | 175 | error (_("-stack-list-arguments: Usage: " |
9a2b4c1b | 176 | "PRINT_VALUES [FRAME_LOW FRAME_HIGH]")); |
fb40c209 AC |
177 | |
178 | if (argc == 3) | |
179 | { | |
180 | frame_low = atoi (argv[1]); | |
181 | frame_high = atoi (argv[2]); | |
182 | } | |
183 | else | |
184 | { | |
185 | /* Called with no arguments, it means we want args for the whole | |
2b03b41d | 186 | backtrace. */ |
fb40c209 AC |
187 | frame_low = -1; |
188 | frame_high = -1; | |
189 | } | |
190 | ||
8b777f02 VP |
191 | print_values = parse_print_values (argv[0]); |
192 | ||
fb40c209 AC |
193 | /* Let's position fi on the frame at which to start the |
194 | display. Could be the innermost frame if the whole stack needs | |
2b03b41d | 195 | displaying, or if frame_low is 0. */ |
fb40c209 AC |
196 | for (i = 0, fi = get_current_frame (); |
197 | fi && i < frame_low; | |
198 | i++, fi = get_prev_frame (fi)); | |
199 | ||
200 | if (fi == NULL) | |
1b05df00 | 201 | error (_("-stack-list-arguments: Not enough frames in stack.")); |
fb40c209 | 202 | |
9a2b4c1b MS |
203 | cleanup_stack_args |
204 | = make_cleanup_ui_out_list_begin_end (uiout, "stack-args"); | |
fb40c209 AC |
205 | |
206 | /* Now let's print the frames up to frame_high, or until there are | |
2b03b41d | 207 | frames in the stack. */ |
fb40c209 AC |
208 | for (; |
209 | fi && (i <= frame_high || frame_high == -1); | |
210 | i++, fi = get_prev_frame (fi)) | |
211 | { | |
6ad4a2cf | 212 | struct cleanup *cleanup_frame; |
102040f0 | 213 | |
fb40c209 | 214 | QUIT; |
6ad4a2cf | 215 | cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
fb40c209 | 216 | ui_out_field_int (uiout, "level", i); |
daf3c977 | 217 | list_args_or_locals (arguments, print_values, fi); |
6ad4a2cf | 218 | do_cleanups (cleanup_frame); |
fb40c209 AC |
219 | } |
220 | ||
6ad4a2cf | 221 | do_cleanups (cleanup_stack_args); |
fb40c209 AC |
222 | } |
223 | ||
daf3c977 | 224 | /* Print a list of the local variables (including arguments) for the |
7a93fb82 VP |
225 | current frame. ARGC must be 1 and ARGV[0] specify if only the names, |
226 | or both names and values of the variables must be printed. See | |
227 | parse_print_value for possible values. */ | |
2b03b41d | 228 | |
daf3c977 VP |
229 | void |
230 | mi_cmd_stack_list_variables (char *command, char **argv, int argc) | |
231 | { | |
232 | struct frame_info *frame; | |
daf3c977 VP |
233 | |
234 | if (argc != 1) | |
235 | error (_("Usage: PRINT_VALUES")); | |
236 | ||
7a93fb82 | 237 | frame = get_selected_frame (NULL); |
daf3c977 | 238 | |
7a93fb82 | 239 | list_args_or_locals (all, parse_print_values (argv[0]), frame); |
daf3c977 VP |
240 | } |
241 | ||
2b03b41d SS |
242 | /* Print single local or argument. ARG must be already read in. For |
243 | WHAT and VALUES see list_args_or_locals. | |
93d86cef | 244 | |
2b03b41d SS |
245 | Errors are printed as if they would be the parameter value. Use |
246 | zeroed ARG iff it should not be printed according to VALUES. */ | |
93d86cef JK |
247 | |
248 | static void | |
249 | list_arg_or_local (const struct frame_arg *arg, enum what_to_list what, | |
250 | enum print_values values) | |
251 | { | |
f99d8bf4 | 252 | struct cleanup *old_chain; |
93d86cef JK |
253 | struct cleanup *cleanup_tuple = NULL; |
254 | struct ui_out *uiout = current_uiout; | |
f99d8bf4 PA |
255 | struct ui_file *stb; |
256 | ||
257 | stb = mem_fileopen (); | |
258 | old_chain = make_cleanup_ui_file_delete (stb); | |
93d86cef JK |
259 | |
260 | gdb_assert (!arg->val || !arg->error); | |
261 | gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL | |
262 | && arg->error == NULL) | |
263 | || values == PRINT_SIMPLE_VALUES | |
264 | || (values == PRINT_ALL_VALUES | |
265 | && (arg->val != NULL || arg->error != NULL))); | |
e18b2753 JK |
266 | gdb_assert (arg->entry_kind == print_entry_values_no |
267 | || (arg->entry_kind == print_entry_values_only | |
268 | && (arg->val || arg->error))); | |
93d86cef JK |
269 | |
270 | if (values != PRINT_NO_VALUES || what == all) | |
271 | cleanup_tuple = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
272 | ||
f99d8bf4 | 273 | fputs_filtered (SYMBOL_PRINT_NAME (arg->sym), stb); |
e18b2753 | 274 | if (arg->entry_kind == print_entry_values_only) |
f99d8bf4 | 275 | fputs_filtered ("@entry", stb); |
e18b2753 | 276 | ui_out_field_stream (uiout, "name", stb); |
93d86cef JK |
277 | |
278 | if (what == all && SYMBOL_IS_ARGUMENT (arg->sym)) | |
279 | ui_out_field_int (uiout, "arg", 1); | |
280 | ||
281 | if (values == PRINT_SIMPLE_VALUES) | |
282 | { | |
283 | check_typedef (arg->sym->type); | |
f99d8bf4 | 284 | type_print (arg->sym->type, "", stb, -1); |
93d86cef JK |
285 | ui_out_field_stream (uiout, "type", stb); |
286 | } | |
287 | ||
288 | if (arg->val || arg->error) | |
289 | { | |
290 | volatile struct gdb_exception except; | |
291 | ||
292 | if (arg->error) | |
293 | except.message = arg->error; | |
294 | else | |
295 | { | |
296 | /* TRY_CATCH has two statements, wrap it in a block. */ | |
297 | ||
298 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
299 | { | |
300 | struct value_print_options opts; | |
301 | ||
302 | get_raw_print_options (&opts); | |
303 | opts.deref_ref = 1; | |
f99d8bf4 | 304 | common_val_print (arg->val, stb, 0, &opts, |
93d86cef JK |
305 | language_def (SYMBOL_LANGUAGE (arg->sym))); |
306 | } | |
307 | } | |
308 | if (except.message) | |
f99d8bf4 | 309 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
93d86cef JK |
310 | except.message); |
311 | ui_out_field_stream (uiout, "value", stb); | |
312 | } | |
313 | ||
93d86cef JK |
314 | if (values != PRINT_NO_VALUES || what == all) |
315 | do_cleanups (cleanup_tuple); | |
f99d8bf4 | 316 | do_cleanups (old_chain); |
93d86cef | 317 | } |
daf3c977 | 318 | |
fb40c209 AC |
319 | /* Print a list of the locals or the arguments for the currently |
320 | selected frame. If the argument passed is 0, printonly the names | |
321 | of the variables, if an argument of 1 is passed, print the values | |
2b03b41d SS |
322 | as well. */ |
323 | ||
fb40c209 | 324 | static void |
bdaf8d4a JK |
325 | list_args_or_locals (enum what_to_list what, enum print_values values, |
326 | struct frame_info *fi) | |
fb40c209 AC |
327 | { |
328 | struct block *block; | |
329 | struct symbol *sym; | |
8157b174 | 330 | struct block_iterator iter; |
6ad4a2cf | 331 | struct cleanup *cleanup_list; |
f5ec2042 | 332 | struct type *type; |
daf3c977 | 333 | char *name_of_result; |
79a45e25 | 334 | struct ui_out *uiout = current_uiout; |
fb40c209 | 335 | |
ae767bfb | 336 | block = get_frame_block (fi, 0); |
fb40c209 | 337 | |
daf3c977 VP |
338 | switch (what) |
339 | { | |
340 | case locals: | |
d6fd4674 PA |
341 | name_of_result = "locals"; |
342 | break; | |
daf3c977 | 343 | case arguments: |
d6fd4674 PA |
344 | name_of_result = "args"; |
345 | break; | |
daf3c977 | 346 | case all: |
d6fd4674 PA |
347 | name_of_result = "variables"; |
348 | break; | |
654e7c1f | 349 | default: |
d6fd4674 PA |
350 | internal_error (__FILE__, __LINE__, |
351 | "unexpected what_to_list: %d", (int) what); | |
daf3c977 VP |
352 | } |
353 | ||
354 | cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result); | |
fb40c209 AC |
355 | |
356 | while (block != 0) | |
357 | { | |
de4f826b | 358 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
fb40c209 | 359 | { |
39bf4652 JB |
360 | int print_me = 0; |
361 | ||
fb40c209 AC |
362 | switch (SYMBOL_CLASS (sym)) |
363 | { | |
364 | default: | |
365 | case LOC_UNDEF: /* catches errors */ | |
366 | case LOC_CONST: /* constant */ | |
367 | case LOC_TYPEDEF: /* local typedef */ | |
368 | case LOC_LABEL: /* local label */ | |
369 | case LOC_BLOCK: /* local function */ | |
370 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
371 | case LOC_UNRESOLVED: /* unresolved static */ | |
372 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
373 | print_me = 0; | |
374 | break; | |
375 | ||
376 | case LOC_ARG: /* argument */ | |
377 | case LOC_REF_ARG: /* reference arg */ | |
fb40c209 | 378 | case LOC_REGPARM_ADDR: /* indirect register arg */ |
fb40c209 | 379 | case LOC_LOCAL: /* stack local */ |
fb40c209 AC |
380 | case LOC_STATIC: /* static */ |
381 | case LOC_REGISTER: /* register */ | |
4cf623b6 | 382 | case LOC_COMPUTED: /* computed location */ |
daf3c977 | 383 | if (what == all) |
fb40c209 | 384 | print_me = 1; |
daf3c977 VP |
385 | else if (what == locals) |
386 | print_me = !SYMBOL_IS_ARGUMENT (sym); | |
387 | else | |
388 | print_me = SYMBOL_IS_ARGUMENT (sym); | |
fb40c209 AC |
389 | break; |
390 | } | |
391 | if (print_me) | |
392 | { | |
6bb0384f | 393 | struct symbol *sym2; |
e18b2753 | 394 | struct frame_arg arg, entryarg; |
fb40c209 | 395 | |
daf3c977 | 396 | if (SYMBOL_IS_ARGUMENT (sym)) |
f7e44f65 | 397 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
f5ec2042 | 398 | block, VAR_DOMAIN, |
1993b719 | 399 | NULL); |
f5ec2042 | 400 | else |
2a2d4dc3 | 401 | sym2 = sym; |
f7e44f65 | 402 | gdb_assert (sym2 != NULL); |
93d86cef JK |
403 | |
404 | memset (&arg, 0, sizeof (arg)); | |
405 | arg.sym = sym2; | |
e18b2753 JK |
406 | arg.entry_kind = print_entry_values_no; |
407 | memset (&entryarg, 0, sizeof (entryarg)); | |
408 | entryarg.sym = sym2; | |
409 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef | 410 | |
f5ec2042 NR |
411 | switch (values) |
412 | { | |
413 | case PRINT_SIMPLE_VALUES: | |
414 | type = check_typedef (sym2->type); | |
f5ec2042 NR |
415 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
416 | && TYPE_CODE (type) != TYPE_CODE_STRUCT | |
417 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
418 | { | |
f5ec2042 | 419 | case PRINT_ALL_VALUES: |
e18b2753 | 420 | read_frame_arg (sym2, fi, &arg, &entryarg); |
93d86cef | 421 | } |
f5ec2042 | 422 | break; |
fb40c209 | 423 | } |
7a93fb82 | 424 | |
e18b2753 JK |
425 | if (arg.entry_kind != print_entry_values_only) |
426 | list_arg_or_local (&arg, what, values); | |
427 | if (entryarg.entry_kind != print_entry_values_no) | |
428 | list_arg_or_local (&entryarg, what, values); | |
93d86cef | 429 | xfree (arg.error); |
e18b2753 | 430 | xfree (entryarg.error); |
fb40c209 AC |
431 | } |
432 | } | |
2b03b41d | 433 | |
fb40c209 AC |
434 | if (BLOCK_FUNCTION (block)) |
435 | break; | |
436 | else | |
437 | block = BLOCK_SUPERBLOCK (block); | |
438 | } | |
6ad4a2cf | 439 | do_cleanups (cleanup_list); |
fb40c209 AC |
440 | } |
441 | ||
ce8f13f8 | 442 | void |
fb40c209 AC |
443 | mi_cmd_stack_select_frame (char *command, char **argv, int argc) |
444 | { | |
fcf43932 | 445 | if (argc == 0 || argc > 1) |
1b05df00 | 446 | error (_("-stack-select-frame: Usage: FRAME_SPEC")); |
fb40c209 | 447 | |
fcf43932 | 448 | select_frame_command (argv[0], 1 /* not used */ ); |
fb40c209 | 449 | } |
64fd8944 | 450 | |
ce8f13f8 | 451 | void |
64fd8944 NR |
452 | mi_cmd_stack_info_frame (char *command, char **argv, int argc) |
453 | { | |
454 | if (argc > 0) | |
2b03b41d | 455 | error (_("-stack-info-frame: No arguments allowed")); |
ce8f13f8 | 456 | |
64fd8944 | 457 | print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0); |
64fd8944 | 458 | } |