1 /* MI Command Set - stack commands.
2 Copyright (C) 2000, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Solutions (a Red Hat company).
6 This file is part of GDB.
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
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
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.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "dictionary.h"
31 #include "gdb_string.h"
34 #include "exceptions.h"
36 enum what_to_list { locals, arguments, all };
38 static void list_args_or_locals (enum what_to_list what,
39 int values, struct frame_info *fi);
41 /* Print a list of the stack frames. Args can be none, in which case
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
44 display. If the two numbers are equal, a single frame will be
47 mi_cmd_stack_list_frames (char *command, char **argv, int argc)
52 struct cleanup *cleanup_stack;
53 struct frame_info *fi;
55 if (argc > 2 || argc == 1)
56 error (_("-stack-list-frames: Usage: [FRAME_LOW FRAME_HIGH]"));
60 frame_low = atoi (argv[0]);
61 frame_high = atoi (argv[1]);
65 /* Called with no arguments, it means we want the whole
71 /* Let's position fi on the frame at which to start the
72 display. Could be the innermost frame if the whole stack needs
73 displaying, or if frame_low is 0. */
74 for (i = 0, fi = get_current_frame ();
76 i++, fi = get_prev_frame (fi));
79 error (_("-stack-list-frames: Not enough frames in stack."));
81 cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack");
83 /* Now let;s print the frames up to frame_high, or until there are
84 frames in the stack. */
86 fi && (i <= frame_high || frame_high == -1);
87 i++, fi = get_prev_frame (fi))
90 /* Print the location and the address always, even for level 0.
91 args == 0: don't print the arguments. */
92 print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */ );
95 do_cleanups (cleanup_stack);
99 mi_cmd_stack_info_depth (char *command, char **argv, int argc)
103 struct frame_info *fi;
106 error (_("-stack-info-depth: Usage: [MAX_DEPTH]"));
109 frame_high = atoi (argv[0]);
111 /* Called with no arguments, it means we want the real depth of
115 for (i = 0, fi = get_current_frame ();
116 fi && (i < frame_high || frame_high == -1);
117 i++, fi = get_prev_frame (fi))
120 ui_out_field_int (current_uiout, "depth", i);
123 static enum print_values
124 parse_print_values (char *name)
126 if (strcmp (name, "0") == 0
127 || strcmp (name, mi_no_values) == 0)
128 return PRINT_NO_VALUES;
129 else if (strcmp (name, "1") == 0
130 || strcmp (name, mi_all_values) == 0)
131 return PRINT_ALL_VALUES;
132 else if (strcmp (name, "2") == 0
133 || strcmp (name, mi_simple_values) == 0)
134 return PRINT_SIMPLE_VALUES;
136 error (_("Unknown value for PRINT_VALUES: must be: \
137 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""),
138 mi_no_values, mi_all_values, mi_simple_values);
141 /* Print a list of the locals for the current frame. With argument of
142 0, print only the names, with argument of 1 print also the
145 mi_cmd_stack_list_locals (char *command, char **argv, int argc)
147 struct frame_info *frame;
150 error (_("-stack-list-locals: Usage: PRINT_VALUES"));
152 frame = get_selected_frame (NULL);
154 list_args_or_locals (locals, parse_print_values (argv[0]), frame);
157 /* Print a list of the arguments for the current frame. With argument
158 of 0, print only the names, with argument of 1 print also the
161 mi_cmd_stack_list_args (char *command, char **argv, int argc)
166 struct frame_info *fi;
167 struct cleanup *cleanup_stack_args;
168 enum print_values print_values;
169 struct ui_out *uiout = current_uiout;
171 if (argc < 1 || argc > 3 || argc == 2)
172 error (_("-stack-list-arguments: Usage: "
173 "PRINT_VALUES [FRAME_LOW FRAME_HIGH]"));
177 frame_low = atoi (argv[1]);
178 frame_high = atoi (argv[2]);
182 /* Called with no arguments, it means we want args for the whole
188 print_values = parse_print_values (argv[0]);
190 /* Let's position fi on the frame at which to start the
191 display. Could be the innermost frame if the whole stack needs
192 displaying, or if frame_low is 0. */
193 for (i = 0, fi = get_current_frame ();
195 i++, fi = get_prev_frame (fi));
198 error (_("-stack-list-arguments: Not enough frames in stack."));
201 = make_cleanup_ui_out_list_begin_end (uiout, "stack-args");
203 /* Now let's print the frames up to frame_high, or until there are
204 frames in the stack. */
206 fi && (i <= frame_high || frame_high == -1);
207 i++, fi = get_prev_frame (fi))
209 struct cleanup *cleanup_frame;
212 cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
213 ui_out_field_int (uiout, "level", i);
214 list_args_or_locals (arguments, print_values, fi);
215 do_cleanups (cleanup_frame);
218 do_cleanups (cleanup_stack_args);
221 /* Print a list of the local variables (including arguments) for the
222 current frame. ARGC must be 1 and ARGV[0] specify if only the names,
223 or both names and values of the variables must be printed. See
224 parse_print_value for possible values. */
226 mi_cmd_stack_list_variables (char *command, char **argv, int argc)
228 struct frame_info *frame;
231 error (_("Usage: PRINT_VALUES"));
233 frame = get_selected_frame (NULL);
235 list_args_or_locals (all, parse_print_values (argv[0]), frame);
239 /* Print a list of the locals or the arguments for the currently
240 selected frame. If the argument passed is 0, printonly the names
241 of the variables, if an argument of 1 is passed, print the values
244 list_args_or_locals (enum what_to_list what, int values, struct frame_info *fi)
248 struct dict_iterator iter;
249 struct cleanup *cleanup_list;
250 struct ui_stream *stb;
252 char *name_of_result;
253 struct ui_out *uiout = current_uiout;
255 stb = ui_out_stream_new (uiout);
257 block = get_frame_block (fi, 0);
262 name_of_result = "locals";
265 name_of_result = "args";
268 name_of_result = "variables";
271 internal_error (__FILE__, __LINE__,
272 "unexpected what_to_list: %d", (int) what);
275 cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result);
279 ALL_BLOCK_SYMBOLS (block, iter, sym)
283 switch (SYMBOL_CLASS (sym))
286 case LOC_UNDEF: /* catches errors */
287 case LOC_CONST: /* constant */
288 case LOC_TYPEDEF: /* local typedef */
289 case LOC_LABEL: /* local label */
290 case LOC_BLOCK: /* local function */
291 case LOC_CONST_BYTES: /* loc. byte seq. */
292 case LOC_UNRESOLVED: /* unresolved static */
293 case LOC_OPTIMIZED_OUT: /* optimized out */
297 case LOC_ARG: /* argument */
298 case LOC_REF_ARG: /* reference arg */
299 case LOC_REGPARM_ADDR: /* indirect register arg */
300 case LOC_LOCAL: /* stack local */
301 case LOC_STATIC: /* static */
302 case LOC_REGISTER: /* register */
303 case LOC_COMPUTED: /* computed location */
306 else if (what == locals)
307 print_me = !SYMBOL_IS_ARGUMENT (sym);
309 print_me = SYMBOL_IS_ARGUMENT (sym);
314 struct cleanup *cleanup_tuple = NULL;
318 if (values != PRINT_NO_VALUES || what == all)
320 make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
321 ui_out_field_string (uiout, "name", SYMBOL_PRINT_NAME (sym));
322 if (what == all && SYMBOL_IS_ARGUMENT (sym))
323 ui_out_field_int (uiout, "arg", 1);
325 if (SYMBOL_IS_ARGUMENT (sym))
326 sym2 = lookup_symbol (SYMBOL_NATURAL_NAME (sym),
333 case PRINT_SIMPLE_VALUES:
334 type = check_typedef (sym2->type);
335 type_print (sym2->type, "", stb->stream, -1);
336 ui_out_field_stream (uiout, "type", stb);
337 if (TYPE_CODE (type) != TYPE_CODE_ARRAY
338 && TYPE_CODE (type) != TYPE_CODE_STRUCT
339 && TYPE_CODE (type) != TYPE_CODE_UNION)
341 volatile struct gdb_exception except;
343 TRY_CATCH (except, RETURN_MASK_ERROR)
345 struct value_print_options opts;
347 val = read_var_value (sym2, fi);
348 get_raw_print_options (&opts);
351 (val, stb->stream, 0, &opts,
352 language_def (SYMBOL_LANGUAGE (sym2)));
354 if (except.reason < 0)
355 fprintf_filtered (stb->stream,
356 _("<error reading variable: %s>"),
359 ui_out_field_stream (uiout, "value", stb);
362 case PRINT_ALL_VALUES:
364 volatile struct gdb_exception except;
366 TRY_CATCH (except, RETURN_MASK_ERROR)
368 struct value_print_options opts;
370 val = read_var_value (sym2, fi);
371 get_raw_print_options (&opts);
374 (val, stb->stream, 0, &opts,
375 language_def (SYMBOL_LANGUAGE (sym2)));
377 if (except.reason < 0)
378 fprintf_filtered (stb->stream,
379 _("<error reading variable: %s>"),
382 ui_out_field_stream (uiout, "value", stb);
387 if (values != PRINT_NO_VALUES || what == all)
388 do_cleanups (cleanup_tuple);
391 if (BLOCK_FUNCTION (block))
394 block = BLOCK_SUPERBLOCK (block);
396 do_cleanups (cleanup_list);
397 ui_out_stream_delete (stb);
401 mi_cmd_stack_select_frame (char *command, char **argv, int argc)
403 if (argc == 0 || argc > 1)
404 error (_("-stack-select-frame: Usage: FRAME_SPEC"));
406 select_frame_command (argv[0], 1 /* not used */ );
410 mi_cmd_stack_info_frame (char *command, char **argv, int argc)
413 error (_("-stack-info-frame: No arguments required"));
415 print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0);