Commit | Line | Data |
---|---|---|
fb40c209 | 1 | /* MI Command Set - stack commands. |
0b302171 JB |
2 | Copyright (C) 2000, 2002-2005, 2007-2012 Free Software Foundation, |
3 | Inc. | |
ab91fdd5 | 4 | Contributed by Cygnus Solutions (a Red Hat company). |
fb40c209 AC |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
fb40c209 AC |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
fb40c209 AC |
20 | |
21 | #include "defs.h" | |
22 | #include "target.h" | |
23 | #include "frame.h" | |
24 | #include "value.h" | |
25 | #include "mi-cmds.h" | |
26 | #include "ui-out.h" | |
e88c90f2 | 27 | #include "symtab.h" |
fe898f56 | 28 | #include "block.h" |
b9362cc7 | 29 | #include "stack.h" |
de4f826b | 30 | #include "dictionary.h" |
f5ec2042 | 31 | #include "gdb_string.h" |
d8ca156b | 32 | #include "language.h" |
79a45b7d | 33 | #include "valprint.h" |
875b4ff5 | 34 | #include "exceptions.h" |
daf3c977 VP |
35 | |
36 | enum what_to_list { locals, arguments, all }; | |
37 | ||
38 | static void list_args_or_locals (enum what_to_list what, | |
bdaf8d4a JK |
39 | enum print_values values, |
40 | struct frame_info *fi); | |
fb40c209 | 41 | |
2b03b41d | 42 | /* Print a list of the stack frames. Args can be none, in which case |
fb40c209 AC |
43 | we want to print the whole backtrace, or a pair of numbers |
44 | specifying the frame numbers at which to start and stop the | |
2b03b41d SS |
45 | display. If the two numbers are equal, a single frame will be |
46 | displayed. */ | |
47 | ||
ce8f13f8 | 48 | void |
fb40c209 AC |
49 | mi_cmd_stack_list_frames (char *command, char **argv, int argc) |
50 | { | |
51 | int frame_low; | |
52 | int frame_high; | |
53 | int i; | |
6ad4a2cf | 54 | struct cleanup *cleanup_stack; |
fb40c209 AC |
55 | struct frame_info *fi; |
56 | ||
fb40c209 | 57 | if (argc > 2 || argc == 1) |
1b05df00 | 58 | error (_("-stack-list-frames: Usage: [FRAME_LOW FRAME_HIGH]")); |
fb40c209 AC |
59 | |
60 | if (argc == 2) | |
61 | { | |
62 | frame_low = atoi (argv[0]); | |
63 | frame_high = atoi (argv[1]); | |
64 | } | |
65 | else | |
66 | { | |
67 | /* Called with no arguments, it means we want the whole | |
2b03b41d | 68 | backtrace. */ |
fb40c209 AC |
69 | frame_low = -1; |
70 | frame_high = -1; | |
71 | } | |
72 | ||
73 | /* Let's position fi on the frame at which to start the | |
74 | display. Could be the innermost frame if the whole stack needs | |
2b03b41d | 75 | displaying, or if frame_low is 0. */ |
fb40c209 AC |
76 | for (i = 0, fi = get_current_frame (); |
77 | fi && i < frame_low; | |
78 | i++, fi = get_prev_frame (fi)); | |
79 | ||
80 | if (fi == NULL) | |
1b05df00 | 81 | error (_("-stack-list-frames: Not enough frames in stack.")); |
fb40c209 | 82 | |
79a45e25 | 83 | cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack"); |
fb40c209 | 84 | |
2b03b41d SS |
85 | /* Now let's print the frames up to frame_high, or until there are |
86 | frames in the stack. */ | |
fb40c209 AC |
87 | for (; |
88 | fi && (i <= frame_high || frame_high == -1); | |
89 | i++, fi = get_prev_frame (fi)) | |
90 | { | |
91 | QUIT; | |
0faf0076 | 92 | /* Print the location and the address always, even for level 0. |
2b03b41d | 93 | If args is 0, don't print the arguments. */ |
0faf0076 | 94 | print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */ ); |
fb40c209 AC |
95 | } |
96 | ||
6ad4a2cf | 97 | do_cleanups (cleanup_stack); |
fb40c209 AC |
98 | } |
99 | ||
ce8f13f8 | 100 | void |
fb40c209 AC |
101 | mi_cmd_stack_info_depth (char *command, char **argv, int argc) |
102 | { | |
103 | int frame_high; | |
104 | int i; | |
105 | struct frame_info *fi; | |
106 | ||
fb40c209 | 107 | if (argc > 1) |
1b05df00 | 108 | error (_("-stack-info-depth: Usage: [MAX_DEPTH]")); |
fb40c209 AC |
109 | |
110 | if (argc == 1) | |
111 | frame_high = atoi (argv[0]); | |
112 | else | |
113 | /* Called with no arguments, it means we want the real depth of | |
2b03b41d | 114 | the stack. */ |
fb40c209 AC |
115 | frame_high = -1; |
116 | ||
117 | for (i = 0, fi = get_current_frame (); | |
118 | fi && (i < frame_high || frame_high == -1); | |
119 | i++, fi = get_prev_frame (fi)) | |
120 | QUIT; | |
121 | ||
79a45e25 | 122 | ui_out_field_int (current_uiout, "depth", i); |
fb40c209 AC |
123 | } |
124 | ||
8b777f02 VP |
125 | static enum print_values |
126 | parse_print_values (char *name) | |
127 | { | |
128 | if (strcmp (name, "0") == 0 | |
129 | || strcmp (name, mi_no_values) == 0) | |
130 | return PRINT_NO_VALUES; | |
131 | else if (strcmp (name, "1") == 0 | |
132 | || strcmp (name, mi_all_values) == 0) | |
133 | return PRINT_ALL_VALUES; | |
134 | else if (strcmp (name, "2") == 0 | |
135 | || strcmp (name, mi_simple_values) == 0) | |
136 | return PRINT_SIMPLE_VALUES; | |
137 | else | |
138 | error (_("Unknown value for PRINT_VALUES: must be: \ | |
139 | 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""), | |
140 | mi_no_values, mi_all_values, mi_simple_values); | |
141 | } | |
142 | ||
7a93fb82 | 143 | /* Print a list of the locals for the current frame. With argument of |
fb40c209 | 144 | 0, print only the names, with argument of 1 print also the |
2b03b41d SS |
145 | values. */ |
146 | ||
ce8f13f8 | 147 | void |
fb40c209 AC |
148 | mi_cmd_stack_list_locals (char *command, char **argv, int argc) |
149 | { | |
f5ec2042 | 150 | struct frame_info *frame; |
f5ec2042 | 151 | |
fb40c209 | 152 | if (argc != 1) |
1b05df00 | 153 | error (_("-stack-list-locals: Usage: PRINT_VALUES")); |
fb40c209 | 154 | |
b04f3ab4 | 155 | frame = get_selected_frame (NULL); |
f5ec2042 | 156 | |
daf3c977 | 157 | list_args_or_locals (locals, parse_print_values (argv[0]), frame); |
fb40c209 AC |
158 | } |
159 | ||
7a93fb82 | 160 | /* Print a list of the arguments for the current frame. With argument |
fb40c209 | 161 | of 0, print only the names, with argument of 1 print also the |
2b03b41d SS |
162 | values. */ |
163 | ||
ce8f13f8 | 164 | void |
fb40c209 AC |
165 | mi_cmd_stack_list_args (char *command, char **argv, int argc) |
166 | { | |
167 | int frame_low; | |
168 | int frame_high; | |
169 | int i; | |
170 | struct frame_info *fi; | |
6ad4a2cf | 171 | struct cleanup *cleanup_stack_args; |
8b777f02 | 172 | enum print_values print_values; |
79a45e25 | 173 | struct ui_out *uiout = current_uiout; |
fb40c209 AC |
174 | |
175 | if (argc < 1 || argc > 3 || argc == 2) | |
1b05df00 | 176 | error (_("-stack-list-arguments: Usage: " |
9a2b4c1b | 177 | "PRINT_VALUES [FRAME_LOW FRAME_HIGH]")); |
fb40c209 AC |
178 | |
179 | if (argc == 3) | |
180 | { | |
181 | frame_low = atoi (argv[1]); | |
182 | frame_high = atoi (argv[2]); | |
183 | } | |
184 | else | |
185 | { | |
186 | /* Called with no arguments, it means we want args for the whole | |
2b03b41d | 187 | backtrace. */ |
fb40c209 AC |
188 | frame_low = -1; |
189 | frame_high = -1; | |
190 | } | |
191 | ||
8b777f02 VP |
192 | print_values = parse_print_values (argv[0]); |
193 | ||
fb40c209 AC |
194 | /* Let's position fi on the frame at which to start the |
195 | display. Could be the innermost frame if the whole stack needs | |
2b03b41d | 196 | displaying, or if frame_low is 0. */ |
fb40c209 AC |
197 | for (i = 0, fi = get_current_frame (); |
198 | fi && i < frame_low; | |
199 | i++, fi = get_prev_frame (fi)); | |
200 | ||
201 | if (fi == NULL) | |
1b05df00 | 202 | error (_("-stack-list-arguments: Not enough frames in stack.")); |
fb40c209 | 203 | |
9a2b4c1b MS |
204 | cleanup_stack_args |
205 | = make_cleanup_ui_out_list_begin_end (uiout, "stack-args"); | |
fb40c209 AC |
206 | |
207 | /* Now let's print the frames up to frame_high, or until there are | |
2b03b41d | 208 | frames in the stack. */ |
fb40c209 AC |
209 | for (; |
210 | fi && (i <= frame_high || frame_high == -1); | |
211 | i++, fi = get_prev_frame (fi)) | |
212 | { | |
6ad4a2cf | 213 | struct cleanup *cleanup_frame; |
102040f0 | 214 | |
fb40c209 | 215 | QUIT; |
6ad4a2cf | 216 | cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
fb40c209 | 217 | ui_out_field_int (uiout, "level", i); |
daf3c977 | 218 | list_args_or_locals (arguments, print_values, fi); |
6ad4a2cf | 219 | do_cleanups (cleanup_frame); |
fb40c209 AC |
220 | } |
221 | ||
6ad4a2cf | 222 | do_cleanups (cleanup_stack_args); |
fb40c209 AC |
223 | } |
224 | ||
daf3c977 | 225 | /* Print a list of the local variables (including arguments) for the |
7a93fb82 VP |
226 | current frame. ARGC must be 1 and ARGV[0] specify if only the names, |
227 | or both names and values of the variables must be printed. See | |
228 | parse_print_value for possible values. */ | |
2b03b41d | 229 | |
daf3c977 VP |
230 | void |
231 | mi_cmd_stack_list_variables (char *command, char **argv, int argc) | |
232 | { | |
233 | struct frame_info *frame; | |
daf3c977 VP |
234 | |
235 | if (argc != 1) | |
236 | error (_("Usage: PRINT_VALUES")); | |
237 | ||
7a93fb82 | 238 | frame = get_selected_frame (NULL); |
daf3c977 | 239 | |
7a93fb82 | 240 | list_args_or_locals (all, parse_print_values (argv[0]), frame); |
daf3c977 VP |
241 | } |
242 | ||
2b03b41d SS |
243 | /* Print single local or argument. ARG must be already read in. For |
244 | WHAT and VALUES see list_args_or_locals. | |
93d86cef | 245 | |
2b03b41d SS |
246 | Errors are printed as if they would be the parameter value. Use |
247 | zeroed ARG iff it should not be printed according to VALUES. */ | |
93d86cef JK |
248 | |
249 | static void | |
250 | list_arg_or_local (const struct frame_arg *arg, enum what_to_list what, | |
251 | enum print_values values) | |
252 | { | |
f99d8bf4 | 253 | struct cleanup *old_chain; |
93d86cef JK |
254 | struct cleanup *cleanup_tuple = NULL; |
255 | struct ui_out *uiout = current_uiout; | |
f99d8bf4 PA |
256 | struct ui_file *stb; |
257 | ||
258 | stb = mem_fileopen (); | |
259 | old_chain = make_cleanup_ui_file_delete (stb); | |
93d86cef JK |
260 | |
261 | gdb_assert (!arg->val || !arg->error); | |
262 | gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL | |
263 | && arg->error == NULL) | |
264 | || values == PRINT_SIMPLE_VALUES | |
265 | || (values == PRINT_ALL_VALUES | |
266 | && (arg->val != NULL || arg->error != NULL))); | |
e18b2753 JK |
267 | gdb_assert (arg->entry_kind == print_entry_values_no |
268 | || (arg->entry_kind == print_entry_values_only | |
269 | && (arg->val || arg->error))); | |
93d86cef JK |
270 | |
271 | if (values != PRINT_NO_VALUES || what == all) | |
272 | cleanup_tuple = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
273 | ||
f99d8bf4 | 274 | fputs_filtered (SYMBOL_PRINT_NAME (arg->sym), stb); |
e18b2753 | 275 | if (arg->entry_kind == print_entry_values_only) |
f99d8bf4 | 276 | fputs_filtered ("@entry", stb); |
e18b2753 | 277 | ui_out_field_stream (uiout, "name", stb); |
93d86cef JK |
278 | |
279 | if (what == all && SYMBOL_IS_ARGUMENT (arg->sym)) | |
280 | ui_out_field_int (uiout, "arg", 1); | |
281 | ||
282 | if (values == PRINT_SIMPLE_VALUES) | |
283 | { | |
284 | check_typedef (arg->sym->type); | |
f99d8bf4 | 285 | type_print (arg->sym->type, "", stb, -1); |
93d86cef JK |
286 | ui_out_field_stream (uiout, "type", stb); |
287 | } | |
288 | ||
289 | if (arg->val || arg->error) | |
290 | { | |
291 | volatile struct gdb_exception except; | |
292 | ||
293 | if (arg->error) | |
294 | except.message = arg->error; | |
295 | else | |
296 | { | |
297 | /* TRY_CATCH has two statements, wrap it in a block. */ | |
298 | ||
299 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
300 | { | |
301 | struct value_print_options opts; | |
302 | ||
303 | get_raw_print_options (&opts); | |
304 | opts.deref_ref = 1; | |
f99d8bf4 | 305 | common_val_print (arg->val, stb, 0, &opts, |
93d86cef JK |
306 | language_def (SYMBOL_LANGUAGE (arg->sym))); |
307 | } | |
308 | } | |
309 | if (except.message) | |
f99d8bf4 | 310 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
93d86cef JK |
311 | except.message); |
312 | ui_out_field_stream (uiout, "value", stb); | |
313 | } | |
314 | ||
93d86cef JK |
315 | if (values != PRINT_NO_VALUES || what == all) |
316 | do_cleanups (cleanup_tuple); | |
f99d8bf4 | 317 | do_cleanups (old_chain); |
93d86cef | 318 | } |
daf3c977 | 319 | |
fb40c209 AC |
320 | /* Print a list of the locals or the arguments for the currently |
321 | selected frame. If the argument passed is 0, printonly the names | |
322 | of the variables, if an argument of 1 is passed, print the values | |
2b03b41d SS |
323 | as well. */ |
324 | ||
fb40c209 | 325 | static void |
bdaf8d4a JK |
326 | list_args_or_locals (enum what_to_list what, enum print_values values, |
327 | struct frame_info *fi) | |
fb40c209 AC |
328 | { |
329 | struct block *block; | |
330 | struct symbol *sym; | |
8157b174 | 331 | struct block_iterator iter; |
6ad4a2cf | 332 | struct cleanup *cleanup_list; |
f5ec2042 | 333 | struct type *type; |
daf3c977 | 334 | char *name_of_result; |
79a45e25 | 335 | struct ui_out *uiout = current_uiout; |
fb40c209 | 336 | |
ae767bfb | 337 | block = get_frame_block (fi, 0); |
fb40c209 | 338 | |
daf3c977 VP |
339 | switch (what) |
340 | { | |
341 | case locals: | |
d6fd4674 PA |
342 | name_of_result = "locals"; |
343 | break; | |
daf3c977 | 344 | case arguments: |
d6fd4674 PA |
345 | name_of_result = "args"; |
346 | break; | |
daf3c977 | 347 | case all: |
d6fd4674 PA |
348 | name_of_result = "variables"; |
349 | break; | |
654e7c1f | 350 | default: |
d6fd4674 PA |
351 | internal_error (__FILE__, __LINE__, |
352 | "unexpected what_to_list: %d", (int) what); | |
daf3c977 VP |
353 | } |
354 | ||
355 | cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result); | |
fb40c209 AC |
356 | |
357 | while (block != 0) | |
358 | { | |
de4f826b | 359 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
fb40c209 | 360 | { |
39bf4652 JB |
361 | int print_me = 0; |
362 | ||
fb40c209 AC |
363 | switch (SYMBOL_CLASS (sym)) |
364 | { | |
365 | default: | |
366 | case LOC_UNDEF: /* catches errors */ | |
367 | case LOC_CONST: /* constant */ | |
368 | case LOC_TYPEDEF: /* local typedef */ | |
369 | case LOC_LABEL: /* local label */ | |
370 | case LOC_BLOCK: /* local function */ | |
371 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
372 | case LOC_UNRESOLVED: /* unresolved static */ | |
373 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
374 | print_me = 0; | |
375 | break; | |
376 | ||
377 | case LOC_ARG: /* argument */ | |
378 | case LOC_REF_ARG: /* reference arg */ | |
fb40c209 | 379 | case LOC_REGPARM_ADDR: /* indirect register arg */ |
fb40c209 | 380 | case LOC_LOCAL: /* stack local */ |
fb40c209 AC |
381 | case LOC_STATIC: /* static */ |
382 | case LOC_REGISTER: /* register */ | |
4cf623b6 | 383 | case LOC_COMPUTED: /* computed location */ |
daf3c977 | 384 | if (what == all) |
fb40c209 | 385 | print_me = 1; |
daf3c977 VP |
386 | else if (what == locals) |
387 | print_me = !SYMBOL_IS_ARGUMENT (sym); | |
388 | else | |
389 | print_me = SYMBOL_IS_ARGUMENT (sym); | |
fb40c209 AC |
390 | break; |
391 | } | |
392 | if (print_me) | |
393 | { | |
6bb0384f | 394 | struct symbol *sym2; |
e18b2753 | 395 | struct frame_arg arg, entryarg; |
fb40c209 | 396 | |
daf3c977 | 397 | if (SYMBOL_IS_ARGUMENT (sym)) |
f7e44f65 | 398 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
f5ec2042 | 399 | block, VAR_DOMAIN, |
2570f2b7 | 400 | (int *) NULL); |
f5ec2042 | 401 | else |
2a2d4dc3 | 402 | sym2 = sym; |
f7e44f65 | 403 | gdb_assert (sym2 != NULL); |
93d86cef JK |
404 | |
405 | memset (&arg, 0, sizeof (arg)); | |
406 | arg.sym = sym2; | |
e18b2753 JK |
407 | arg.entry_kind = print_entry_values_no; |
408 | memset (&entryarg, 0, sizeof (entryarg)); | |
409 | entryarg.sym = sym2; | |
410 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef | 411 | |
f5ec2042 NR |
412 | switch (values) |
413 | { | |
414 | case PRINT_SIMPLE_VALUES: | |
415 | type = check_typedef (sym2->type); | |
f5ec2042 NR |
416 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
417 | && TYPE_CODE (type) != TYPE_CODE_STRUCT | |
418 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
419 | { | |
f5ec2042 | 420 | case PRINT_ALL_VALUES: |
e18b2753 | 421 | read_frame_arg (sym2, fi, &arg, &entryarg); |
93d86cef | 422 | } |
f5ec2042 | 423 | break; |
fb40c209 | 424 | } |
7a93fb82 | 425 | |
e18b2753 JK |
426 | if (arg.entry_kind != print_entry_values_only) |
427 | list_arg_or_local (&arg, what, values); | |
428 | if (entryarg.entry_kind != print_entry_values_no) | |
429 | list_arg_or_local (&entryarg, what, values); | |
93d86cef | 430 | xfree (arg.error); |
e18b2753 | 431 | xfree (entryarg.error); |
fb40c209 AC |
432 | } |
433 | } | |
2b03b41d | 434 | |
fb40c209 AC |
435 | if (BLOCK_FUNCTION (block)) |
436 | break; | |
437 | else | |
438 | block = BLOCK_SUPERBLOCK (block); | |
439 | } | |
6ad4a2cf | 440 | do_cleanups (cleanup_list); |
fb40c209 AC |
441 | } |
442 | ||
ce8f13f8 | 443 | void |
fb40c209 AC |
444 | mi_cmd_stack_select_frame (char *command, char **argv, int argc) |
445 | { | |
fcf43932 | 446 | if (argc == 0 || argc > 1) |
1b05df00 | 447 | error (_("-stack-select-frame: Usage: FRAME_SPEC")); |
fb40c209 | 448 | |
fcf43932 | 449 | select_frame_command (argv[0], 1 /* not used */ ); |
fb40c209 | 450 | } |
64fd8944 | 451 | |
ce8f13f8 | 452 | void |
64fd8944 NR |
453 | mi_cmd_stack_info_frame (char *command, char **argv, int argc) |
454 | { | |
455 | if (argc > 0) | |
2b03b41d | 456 | error (_("-stack-info-frame: No arguments allowed")); |
ce8f13f8 | 457 | |
64fd8944 | 458 | print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0); |
64fd8944 | 459 | } |