Commit | Line | Data |
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fb40c209 | 1 | /* MI Command Set - stack commands. |
7b6bb8da | 2 | Copyright (C) 2000, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 |
6aba47ca | 3 | Free Software Foundation, 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 AC |
41 | |
42 | /* Print a list of the stack frames. Args can be none, in which case | |
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 | |
45 | display. If the two numbers are equal, a single frame will be | |
46 | displayed. */ | |
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 | |
67 | backtrace. */ | |
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 | |
74 | displaying, or if frame_low is 0. */ | |
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 AC |
83 | |
84 | /* Now let;s print the frames up to frame_high, or until there are | |
85 | frames in the stack. */ | |
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. |
fb40c209 | 92 | args == 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 | |
113 | the stack. */ | |
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 AC |
143 | 0, print only the names, with argument of 1 print also the |
144 | values. */ | |
ce8f13f8 | 145 | void |
fb40c209 AC |
146 | mi_cmd_stack_list_locals (char *command, char **argv, int argc) |
147 | { | |
f5ec2042 | 148 | struct frame_info *frame; |
f5ec2042 | 149 | |
fb40c209 | 150 | if (argc != 1) |
1b05df00 | 151 | error (_("-stack-list-locals: Usage: PRINT_VALUES")); |
fb40c209 | 152 | |
b04f3ab4 | 153 | frame = get_selected_frame (NULL); |
f5ec2042 | 154 | |
daf3c977 | 155 | list_args_or_locals (locals, parse_print_values (argv[0]), frame); |
fb40c209 AC |
156 | } |
157 | ||
7a93fb82 | 158 | /* Print a list of the arguments for the current frame. With argument |
fb40c209 AC |
159 | of 0, print only the names, with argument of 1 print also the |
160 | values. */ | |
ce8f13f8 | 161 | void |
fb40c209 AC |
162 | mi_cmd_stack_list_args (char *command, char **argv, int argc) |
163 | { | |
164 | int frame_low; | |
165 | int frame_high; | |
166 | int i; | |
167 | struct frame_info *fi; | |
6ad4a2cf | 168 | struct cleanup *cleanup_stack_args; |
8b777f02 | 169 | enum print_values print_values; |
79a45e25 | 170 | struct ui_out *uiout = current_uiout; |
fb40c209 AC |
171 | |
172 | if (argc < 1 || argc > 3 || argc == 2) | |
1b05df00 | 173 | error (_("-stack-list-arguments: Usage: " |
9a2b4c1b | 174 | "PRINT_VALUES [FRAME_LOW FRAME_HIGH]")); |
fb40c209 AC |
175 | |
176 | if (argc == 3) | |
177 | { | |
178 | frame_low = atoi (argv[1]); | |
179 | frame_high = atoi (argv[2]); | |
180 | } | |
181 | else | |
182 | { | |
183 | /* Called with no arguments, it means we want args for the whole | |
184 | backtrace. */ | |
185 | frame_low = -1; | |
186 | frame_high = -1; | |
187 | } | |
188 | ||
8b777f02 VP |
189 | print_values = parse_print_values (argv[0]); |
190 | ||
fb40c209 AC |
191 | /* Let's position fi on the frame at which to start the |
192 | display. Could be the innermost frame if the whole stack needs | |
193 | displaying, or if frame_low is 0. */ | |
194 | for (i = 0, fi = get_current_frame (); | |
195 | fi && i < frame_low; | |
196 | i++, fi = get_prev_frame (fi)); | |
197 | ||
198 | if (fi == NULL) | |
1b05df00 | 199 | error (_("-stack-list-arguments: Not enough frames in stack.")); |
fb40c209 | 200 | |
9a2b4c1b MS |
201 | cleanup_stack_args |
202 | = make_cleanup_ui_out_list_begin_end (uiout, "stack-args"); | |
fb40c209 AC |
203 | |
204 | /* Now let's print the frames up to frame_high, or until there are | |
205 | frames in the stack. */ | |
206 | for (; | |
207 | fi && (i <= frame_high || frame_high == -1); | |
208 | i++, fi = get_prev_frame (fi)) | |
209 | { | |
6ad4a2cf | 210 | struct cleanup *cleanup_frame; |
102040f0 | 211 | |
fb40c209 | 212 | QUIT; |
6ad4a2cf | 213 | cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
fb40c209 | 214 | ui_out_field_int (uiout, "level", i); |
daf3c977 | 215 | list_args_or_locals (arguments, print_values, fi); |
6ad4a2cf | 216 | do_cleanups (cleanup_frame); |
fb40c209 AC |
217 | } |
218 | ||
6ad4a2cf | 219 | do_cleanups (cleanup_stack_args); |
fb40c209 AC |
220 | } |
221 | ||
daf3c977 | 222 | /* Print a list of the local variables (including arguments) for the |
7a93fb82 VP |
223 | current frame. ARGC must be 1 and ARGV[0] specify if only the names, |
224 | or both names and values of the variables must be printed. See | |
225 | parse_print_value for possible values. */ | |
daf3c977 VP |
226 | void |
227 | mi_cmd_stack_list_variables (char *command, char **argv, int argc) | |
228 | { | |
229 | struct frame_info *frame; | |
daf3c977 VP |
230 | |
231 | if (argc != 1) | |
232 | error (_("Usage: PRINT_VALUES")); | |
233 | ||
7a93fb82 | 234 | frame = get_selected_frame (NULL); |
daf3c977 | 235 | |
7a93fb82 | 236 | list_args_or_locals (all, parse_print_values (argv[0]), frame); |
daf3c977 VP |
237 | } |
238 | ||
93d86cef JK |
239 | /* Print single local or argument. ARG must be already read in. For WHAT and |
240 | VALUES see list_args_or_locals. | |
241 | ||
242 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
243 | iff it should not be printed accoring to VALUES. */ | |
244 | ||
245 | static void | |
246 | list_arg_or_local (const struct frame_arg *arg, enum what_to_list what, | |
247 | enum print_values values) | |
248 | { | |
249 | struct cleanup *cleanup_tuple = NULL; | |
250 | struct ui_out *uiout = current_uiout; | |
251 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
252 | ||
253 | gdb_assert (!arg->val || !arg->error); | |
254 | gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL | |
255 | && arg->error == NULL) | |
256 | || values == PRINT_SIMPLE_VALUES | |
257 | || (values == PRINT_ALL_VALUES | |
258 | && (arg->val != NULL || arg->error != NULL))); | |
259 | ||
260 | if (values != PRINT_NO_VALUES || what == all) | |
261 | cleanup_tuple = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
262 | ||
263 | ui_out_field_string (uiout, "name", SYMBOL_PRINT_NAME (arg->sym)); | |
264 | ||
265 | if (what == all && SYMBOL_IS_ARGUMENT (arg->sym)) | |
266 | ui_out_field_int (uiout, "arg", 1); | |
267 | ||
268 | if (values == PRINT_SIMPLE_VALUES) | |
269 | { | |
270 | check_typedef (arg->sym->type); | |
271 | type_print (arg->sym->type, "", stb->stream, -1); | |
272 | ui_out_field_stream (uiout, "type", stb); | |
273 | } | |
274 | ||
275 | if (arg->val || arg->error) | |
276 | { | |
277 | volatile struct gdb_exception except; | |
278 | ||
279 | if (arg->error) | |
280 | except.message = arg->error; | |
281 | else | |
282 | { | |
283 | /* TRY_CATCH has two statements, wrap it in a block. */ | |
284 | ||
285 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
286 | { | |
287 | struct value_print_options opts; | |
288 | ||
289 | get_raw_print_options (&opts); | |
290 | opts.deref_ref = 1; | |
291 | common_val_print (arg->val, stb->stream, 0, &opts, | |
292 | language_def (SYMBOL_LANGUAGE (arg->sym))); | |
293 | } | |
294 | } | |
295 | if (except.message) | |
296 | fprintf_filtered (stb->stream, _("<error reading variable: %s>"), | |
297 | except.message); | |
298 | ui_out_field_stream (uiout, "value", stb); | |
299 | } | |
300 | ||
301 | ui_out_stream_delete (stb); | |
302 | if (values != PRINT_NO_VALUES || what == all) | |
303 | do_cleanups (cleanup_tuple); | |
304 | } | |
daf3c977 | 305 | |
fb40c209 AC |
306 | /* Print a list of the locals or the arguments for the currently |
307 | selected frame. If the argument passed is 0, printonly the names | |
308 | of the variables, if an argument of 1 is passed, print the values | |
309 | as well. */ | |
310 | static void | |
bdaf8d4a JK |
311 | list_args_or_locals (enum what_to_list what, enum print_values values, |
312 | struct frame_info *fi) | |
fb40c209 AC |
313 | { |
314 | struct block *block; | |
315 | struct symbol *sym; | |
de4f826b | 316 | struct dict_iterator iter; |
6ad4a2cf | 317 | struct cleanup *cleanup_list; |
cb0fd152 | 318 | struct ui_stream *stb; |
f5ec2042 | 319 | struct type *type; |
daf3c977 | 320 | char *name_of_result; |
79a45e25 | 321 | struct ui_out *uiout = current_uiout; |
fb40c209 AC |
322 | |
323 | stb = ui_out_stream_new (uiout); | |
324 | ||
ae767bfb | 325 | block = get_frame_block (fi, 0); |
fb40c209 | 326 | |
daf3c977 VP |
327 | switch (what) |
328 | { | |
329 | case locals: | |
d6fd4674 PA |
330 | name_of_result = "locals"; |
331 | break; | |
daf3c977 | 332 | case arguments: |
d6fd4674 PA |
333 | name_of_result = "args"; |
334 | break; | |
daf3c977 | 335 | case all: |
d6fd4674 PA |
336 | name_of_result = "variables"; |
337 | break; | |
654e7c1f | 338 | default: |
d6fd4674 PA |
339 | internal_error (__FILE__, __LINE__, |
340 | "unexpected what_to_list: %d", (int) what); | |
daf3c977 VP |
341 | } |
342 | ||
343 | cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result); | |
fb40c209 AC |
344 | |
345 | while (block != 0) | |
346 | { | |
de4f826b | 347 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
fb40c209 | 348 | { |
39bf4652 JB |
349 | int print_me = 0; |
350 | ||
fb40c209 AC |
351 | switch (SYMBOL_CLASS (sym)) |
352 | { | |
353 | default: | |
354 | case LOC_UNDEF: /* catches errors */ | |
355 | case LOC_CONST: /* constant */ | |
356 | case LOC_TYPEDEF: /* local typedef */ | |
357 | case LOC_LABEL: /* local label */ | |
358 | case LOC_BLOCK: /* local function */ | |
359 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
360 | case LOC_UNRESOLVED: /* unresolved static */ | |
361 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
362 | print_me = 0; | |
363 | break; | |
364 | ||
365 | case LOC_ARG: /* argument */ | |
366 | case LOC_REF_ARG: /* reference arg */ | |
fb40c209 | 367 | case LOC_REGPARM_ADDR: /* indirect register arg */ |
fb40c209 | 368 | case LOC_LOCAL: /* stack local */ |
fb40c209 AC |
369 | case LOC_STATIC: /* static */ |
370 | case LOC_REGISTER: /* register */ | |
4cf623b6 | 371 | case LOC_COMPUTED: /* computed location */ |
daf3c977 | 372 | if (what == all) |
fb40c209 | 373 | print_me = 1; |
daf3c977 VP |
374 | else if (what == locals) |
375 | print_me = !SYMBOL_IS_ARGUMENT (sym); | |
376 | else | |
377 | print_me = SYMBOL_IS_ARGUMENT (sym); | |
fb40c209 AC |
378 | break; |
379 | } | |
380 | if (print_me) | |
381 | { | |
6bb0384f | 382 | struct symbol *sym2; |
93d86cef | 383 | struct frame_arg arg; |
fb40c209 | 384 | |
daf3c977 | 385 | if (SYMBOL_IS_ARGUMENT (sym)) |
f5ec2042 NR |
386 | sym2 = lookup_symbol (SYMBOL_NATURAL_NAME (sym), |
387 | block, VAR_DOMAIN, | |
2570f2b7 | 388 | (int *) NULL); |
f5ec2042 | 389 | else |
2a2d4dc3 | 390 | sym2 = sym; |
93d86cef JK |
391 | |
392 | memset (&arg, 0, sizeof (arg)); | |
393 | arg.sym = sym2; | |
394 | ||
f5ec2042 NR |
395 | switch (values) |
396 | { | |
397 | case PRINT_SIMPLE_VALUES: | |
398 | type = check_typedef (sym2->type); | |
f5ec2042 NR |
399 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
400 | && TYPE_CODE (type) != TYPE_CODE_STRUCT | |
401 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
402 | { | |
f5ec2042 | 403 | case PRINT_ALL_VALUES: |
93d86cef JK |
404 | read_frame_arg (sym2, fi, &arg); |
405 | } | |
f5ec2042 | 406 | break; |
fb40c209 | 407 | } |
7a93fb82 | 408 | |
93d86cef JK |
409 | list_arg_or_local (&arg, what, values); |
410 | xfree (arg.error); | |
fb40c209 AC |
411 | } |
412 | } | |
413 | if (BLOCK_FUNCTION (block)) | |
414 | break; | |
415 | else | |
416 | block = BLOCK_SUPERBLOCK (block); | |
417 | } | |
6ad4a2cf | 418 | do_cleanups (cleanup_list); |
fb40c209 AC |
419 | ui_out_stream_delete (stb); |
420 | } | |
421 | ||
ce8f13f8 | 422 | void |
fb40c209 AC |
423 | mi_cmd_stack_select_frame (char *command, char **argv, int argc) |
424 | { | |
fcf43932 | 425 | if (argc == 0 || argc > 1) |
1b05df00 | 426 | error (_("-stack-select-frame: Usage: FRAME_SPEC")); |
fb40c209 | 427 | |
fcf43932 | 428 | select_frame_command (argv[0], 1 /* not used */ ); |
fb40c209 | 429 | } |
64fd8944 | 430 | |
ce8f13f8 | 431 | void |
64fd8944 NR |
432 | mi_cmd_stack_info_frame (char *command, char **argv, int argc) |
433 | { | |
434 | if (argc > 0) | |
1b05df00 | 435 | error (_("-stack-info-frame: No arguments required")); |
ce8f13f8 | 436 | |
64fd8944 | 437 | print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0); |
64fd8944 | 438 | } |