Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
7789c6f5 | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software |
8926118c | 5 | Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include <ctype.h> | |
25 | #include "defs.h" | |
26 | #include "gdb_string.h" | |
27 | #include "value.h" | |
28 | #include "symtab.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "language.h" | |
32 | #include "frame.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "gdbcore.h" | |
35 | #include "target.h" | |
0378c332 | 36 | #include "source.h" |
c906108c SS |
37 | #include "breakpoint.h" |
38 | #include "demangle.h" | |
39 | #include "inferior.h" | |
40 | #include "annotate.h" | |
8b93c638 | 41 | #include "ui-out.h" |
fe898f56 | 42 | #include "block.h" |
b9362cc7 | 43 | #include "stack.h" |
8d3b0994 | 44 | #include "gdb_assert.h" |
de4f826b | 45 | #include "dictionary.h" |
898c62f5 | 46 | #include "reggroups.h" |
c906108c SS |
47 | |
48 | /* Prototypes for exported functions. */ | |
49 | ||
a14ed312 | 50 | void args_info (char *, int); |
c906108c | 51 | |
a14ed312 | 52 | void locals_info (char *, int); |
c906108c | 53 | |
507f3c78 | 54 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 55 | |
a14ed312 | 56 | void _initialize_stack (void); |
c906108c | 57 | |
a58dd373 | 58 | void return_command (char *, int); |
c906108c | 59 | |
a58dd373 | 60 | /* Prototypes for local functions. */ |
c906108c | 61 | |
a14ed312 | 62 | static void down_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void down_silently_base (char *); |
c906108c | 65 | |
a14ed312 | 66 | static void down_silently_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | static void up_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void up_silently_base (char *); |
c906108c | 71 | |
a14ed312 | 72 | static void up_silently_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | void frame_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void current_frame_command (char *, int); |
7a292a7a | 77 | |
d9fcf2fb | 78 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 79 | |
a14ed312 | 80 | static void catch_info (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void args_plus_locals_info (char *, int); |
c906108c | 83 | |
d9fcf2fb JM |
84 | static void print_frame_label_vars (struct frame_info *, int, |
85 | struct ui_file *); | |
c906108c | 86 | |
d9fcf2fb JM |
87 | static void print_frame_local_vars (struct frame_info *, int, |
88 | struct ui_file *); | |
c906108c | 89 | |
d9fcf2fb JM |
90 | static int print_block_frame_labels (struct block *, int *, |
91 | struct ui_file *); | |
c906108c | 92 | |
d9fcf2fb JM |
93 | static int print_block_frame_locals (struct block *, |
94 | struct frame_info *, | |
95 | int, | |
96 | struct ui_file *); | |
c906108c | 97 | |
c5394b80 JM |
98 | static void print_frame (struct frame_info *fi, |
99 | int level, | |
100 | int source, | |
101 | int args, | |
102 | struct symtab_and_line sal); | |
103 | ||
a14ed312 | 104 | static void backtrace_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | struct frame_info *parse_frame_specification (char *); |
c906108c | 107 | |
a14ed312 | 108 | static void frame_info (char *, int); |
c906108c SS |
109 | |
110 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
c906108c | 111 | |
c906108c SS |
112 | /* Zero means do things normally; we are interacting directly with the |
113 | user. One means print the full filename and linenumber when a | |
114 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
115 | parse. Two means print similar annotations, but in many more | |
116 | cases and in a slightly different syntax. */ | |
117 | ||
118 | int annotation_level = 0; | |
c906108c | 119 | \f |
c5aa993b JM |
120 | |
121 | struct print_stack_frame_args | |
122 | { | |
123 | struct frame_info *fi; | |
124 | int level; | |
125 | int source; | |
126 | int args; | |
127 | }; | |
c906108c | 128 | |
c906108c SS |
129 | /* Show or print the frame arguments. |
130 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 131 | static int print_stack_frame_stub (void *args); |
c906108c | 132 | static int |
fba45db2 | 133 | print_stack_frame_stub (void *args) |
c906108c | 134 | { |
c5aa993b | 135 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 136 | |
7789c6f5 | 137 | print_frame_info (p->fi, p->level, p->source, p->args); |
c906108c SS |
138 | return 0; |
139 | } | |
140 | ||
c906108c SS |
141 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info |
142 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
143 | This prints the level, the function executing, the arguments, | |
144 | and the file name and line number. | |
145 | If the pc is not at the beginning of the source line, | |
146 | the actual pc is printed at the beginning. | |
147 | ||
148 | If SOURCE is 1, print the source line as well. | |
149 | If SOURCE is -1, print ONLY the source line. */ | |
150 | ||
151 | void | |
fba45db2 | 152 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
153 | { |
154 | struct print_stack_frame_args args; | |
155 | ||
156 | args.fi = fi; | |
157 | args.level = level; | |
158 | args.source = source; | |
159 | args.args = 1; | |
160 | ||
c5aa993b | 161 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
7789c6f5 | 162 | } |
c906108c | 163 | |
c5aa993b JM |
164 | struct print_args_args |
165 | { | |
c906108c SS |
166 | struct symbol *func; |
167 | struct frame_info *fi; | |
d9fcf2fb | 168 | struct ui_file *stream; |
c906108c SS |
169 | }; |
170 | ||
4efb68b1 | 171 | static int print_args_stub (void *); |
c906108c | 172 | |
8d3b0994 AC |
173 | /* Print nameless args on STREAM. |
174 | FI is the frameinfo for this frame, START is the offset | |
175 | of the first nameless arg, and NUM is the number of nameless args to | |
176 | print. FIRST is nonzero if this is the first argument (not just | |
177 | the first nameless arg). */ | |
178 | ||
179 | static void | |
180 | print_frame_nameless_args (struct frame_info *fi, long start, int num, | |
181 | int first, struct ui_file *stream) | |
182 | { | |
183 | int i; | |
184 | CORE_ADDR argsaddr; | |
185 | long arg_value; | |
186 | ||
187 | for (i = 0; i < num; i++) | |
188 | { | |
189 | QUIT; | |
190 | argsaddr = get_frame_args_address (fi); | |
191 | if (!argsaddr) | |
192 | return; | |
193 | arg_value = read_memory_integer (argsaddr + start, sizeof (int)); | |
194 | if (!first) | |
195 | fprintf_filtered (stream, ", "); | |
196 | fprintf_filtered (stream, "%ld", arg_value); | |
197 | first = 0; | |
198 | start += sizeof (int); | |
199 | } | |
200 | } | |
201 | ||
202 | /* Print the arguments of a stack frame, given the function FUNC | |
203 | running in that frame (as a symbol), the info on the frame, | |
204 | and the number of args according to the stack frame (or -1 if unknown). */ | |
205 | ||
206 | /* References here and elsewhere to "number of args according to the | |
207 | stack frame" appear in all cases to refer to "number of ints of args | |
208 | according to the stack frame". At least for VAX, i386, isi. */ | |
209 | ||
210 | static void | |
211 | print_frame_args (struct symbol *func, struct frame_info *fi, int num, | |
212 | struct ui_file *stream) | |
213 | { | |
214 | struct block *b = NULL; | |
215 | int first = 1; | |
de4f826b | 216 | struct dict_iterator iter; |
52f0bd74 | 217 | struct symbol *sym; |
8d3b0994 AC |
218 | struct value *val; |
219 | /* Offset of next stack argument beyond the one we have seen that is | |
220 | at the highest offset. | |
221 | -1 if we haven't come to a stack argument yet. */ | |
222 | long highest_offset = -1; | |
223 | int arg_size; | |
224 | /* Number of ints of arguments that we have printed so far. */ | |
225 | int args_printed = 0; | |
226 | struct cleanup *old_chain, *list_chain; | |
227 | struct ui_stream *stb; | |
228 | ||
229 | stb = ui_out_stream_new (uiout); | |
230 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
231 | ||
232 | if (func) | |
233 | { | |
234 | b = SYMBOL_BLOCK_VALUE (func); | |
8d3b0994 | 235 | |
de4f826b | 236 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 AC |
237 | { |
238 | QUIT; | |
239 | ||
240 | /* Keep track of the highest stack argument offset seen, and | |
241 | skip over any kinds of symbols we don't care about. */ | |
242 | ||
243 | switch (SYMBOL_CLASS (sym)) | |
244 | { | |
245 | case LOC_ARG: | |
246 | case LOC_REF_ARG: | |
247 | { | |
248 | long current_offset = SYMBOL_VALUE (sym); | |
249 | arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
250 | ||
251 | /* Compute address of next argument by adding the size of | |
252 | this argument and rounding to an int boundary. */ | |
253 | current_offset = | |
254 | ((current_offset + arg_size + sizeof (int) - 1) | |
255 | & ~(sizeof (int) - 1)); | |
256 | ||
257 | /* If this is the highest offset seen yet, set highest_offset. */ | |
258 | if (highest_offset == -1 | |
259 | || (current_offset > highest_offset)) | |
260 | highest_offset = current_offset; | |
261 | ||
262 | /* Add the number of ints we're about to print to args_printed. */ | |
263 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); | |
264 | } | |
265 | ||
266 | /* We care about types of symbols, but don't need to keep track of | |
267 | stack offsets in them. */ | |
268 | case LOC_REGPARM: | |
269 | case LOC_REGPARM_ADDR: | |
270 | case LOC_LOCAL_ARG: | |
271 | case LOC_BASEREG_ARG: | |
272 | case LOC_COMPUTED_ARG: | |
273 | break; | |
274 | ||
275 | /* Other types of symbols we just skip over. */ | |
276 | default: | |
277 | continue; | |
278 | } | |
279 | ||
280 | /* We have to look up the symbol because arguments can have | |
281 | two entries (one a parameter, one a local) and the one we | |
282 | want is the local, which lookup_symbol will find for us. | |
283 | This includes gcc1 (not gcc2) on the sparc when passing a | |
284 | small structure and gcc2 when the argument type is float | |
285 | and it is passed as a double and converted to float by | |
286 | the prologue (in the latter case the type of the LOC_ARG | |
287 | symbol is double and the type of the LOC_LOCAL symbol is | |
288 | float). */ | |
289 | /* But if the parameter name is null, don't try it. | |
290 | Null parameter names occur on the RS/6000, for traceback tables. | |
291 | FIXME, should we even print them? */ | |
292 | ||
293 | if (*DEPRECATED_SYMBOL_NAME (sym)) | |
294 | { | |
295 | struct symbol *nsym; | |
296 | nsym = lookup_symbol | |
297 | (DEPRECATED_SYMBOL_NAME (sym), | |
298 | b, VAR_DOMAIN, (int *) NULL, (struct symtab **) NULL); | |
299 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER) | |
300 | { | |
301 | /* There is a LOC_ARG/LOC_REGISTER pair. This means that | |
302 | it was passed on the stack and loaded into a register, | |
303 | or passed in a register and stored in a stack slot. | |
304 | GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER. | |
305 | ||
306 | Reasons for using the LOC_ARG: | |
307 | (1) because find_saved_registers may be slow for remote | |
308 | debugging, | |
309 | (2) because registers are often re-used and stack slots | |
310 | rarely (never?) are. Therefore using the stack slot is | |
311 | much less likely to print garbage. | |
312 | ||
313 | Reasons why we might want to use the LOC_REGISTER: | |
314 | (1) So that the backtrace prints the same value as | |
315 | "print foo". I see no compelling reason why this needs | |
316 | to be the case; having the backtrace print the value which | |
317 | was passed in, and "print foo" print the value as modified | |
318 | within the called function, makes perfect sense to me. | |
319 | ||
320 | Additional note: It might be nice if "info args" displayed | |
321 | both values. | |
322 | One more note: There is a case with sparc structure passing | |
323 | where we need to use the LOC_REGISTER, but this is dealt with | |
324 | by creating a single LOC_REGPARM in symbol reading. */ | |
325 | ||
326 | /* Leave sym (the LOC_ARG) alone. */ | |
327 | ; | |
328 | } | |
329 | else | |
330 | sym = nsym; | |
331 | } | |
332 | ||
333 | /* Print the current arg. */ | |
334 | if (!first) | |
335 | ui_out_text (uiout, ", "); | |
336 | ui_out_wrap_hint (uiout, " "); | |
337 | ||
338 | annotate_arg_begin (); | |
339 | ||
340 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
341 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym), | |
342 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); | |
343 | ui_out_field_stream (uiout, "name", stb); | |
344 | annotate_arg_name_end (); | |
345 | ui_out_text (uiout, "="); | |
346 | ||
347 | /* Avoid value_print because it will deref ref parameters. We just | |
348 | want to print their addresses. Print ??? for args whose address | |
349 | we do not know. We pass 2 as "recurse" to val_print because our | |
350 | standard indentation here is 4 spaces, and val_print indents | |
351 | 2 for each recurse. */ | |
352 | val = read_var_value (sym, fi); | |
353 | ||
354 | annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val)); | |
355 | ||
356 | if (val) | |
357 | { | |
358 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, | |
359 | VALUE_ADDRESS (val), | |
360 | stb->stream, 0, 0, 2, Val_no_prettyprint); | |
361 | ui_out_field_stream (uiout, "value", stb); | |
362 | } | |
363 | else | |
364 | ui_out_text (uiout, "???"); | |
365 | ||
366 | /* Invoke ui_out_tuple_end. */ | |
367 | do_cleanups (list_chain); | |
368 | ||
369 | annotate_arg_end (); | |
370 | ||
371 | first = 0; | |
372 | } | |
373 | } | |
374 | ||
375 | /* Don't print nameless args in situations where we don't know | |
376 | enough about the stack to find them. */ | |
377 | if (num != -1) | |
378 | { | |
379 | long start; | |
380 | ||
381 | if (highest_offset == -1) | |
382 | start = FRAME_ARGS_SKIP; | |
383 | else | |
384 | start = highest_offset; | |
385 | ||
386 | print_frame_nameless_args (fi, start, num - args_printed, | |
387 | first, stream); | |
388 | } | |
389 | do_cleanups (old_chain); | |
390 | } | |
391 | ||
c906108c SS |
392 | /* Pass the args the way catch_errors wants them. */ |
393 | ||
394 | static int | |
4efb68b1 | 395 | print_args_stub (void *args) |
c906108c SS |
396 | { |
397 | int numargs; | |
c5aa993b | 398 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 399 | |
983a287a AC |
400 | if (FRAME_NUM_ARGS_P ()) |
401 | { | |
402 | numargs = FRAME_NUM_ARGS (p->fi); | |
403 | gdb_assert (numargs >= 0); | |
404 | } | |
405 | else | |
406 | numargs = -1; | |
ac9a91a7 | 407 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
408 | return 0; |
409 | } | |
410 | ||
411 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
412 | Used in "where" output, also used to emit breakpoint or step |
413 | messages. | |
414 | LEVEL is the level of the frame, or -1 if it is the | |
415 | innermost frame but we don't want to print the level. | |
416 | The meaning of the SOURCE argument is: | |
417 | SRC_LINE: Print only source line | |
418 | LOCATION: Print only location | |
419 | LOC_AND_SRC: Print location and source line. */ | |
c906108c | 420 | |
7789c6f5 EZ |
421 | void |
422 | print_frame_info (struct frame_info *fi, int level, int source, int args) | |
c906108c SS |
423 | { |
424 | struct symtab_and_line sal; | |
c5394b80 JM |
425 | int source_print; |
426 | int location_print; | |
c906108c | 427 | |
075559bc AC |
428 | if (get_frame_type (fi) == DUMMY_FRAME |
429 | || get_frame_type (fi) == SIGTRAMP_FRAME) | |
c906108c | 430 | { |
075559bc AC |
431 | struct cleanup *uiout_cleanup |
432 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 433 | |
6a3fe0a4 MK |
434 | annotate_frame_begin (level == -1 ? 0 : level, get_frame_pc (fi)); |
435 | ||
c906108c | 436 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 437 | to list for this frame. */ |
c906108c | 438 | if (level >= 0) |
52c6a6ac JJ |
439 | { |
440 | ui_out_text (uiout, "#"); | |
441 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); | |
442 | } | |
075559bc | 443 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 444 | { |
075559bc | 445 | annotate_frame_address (); |
6fba5002 | 446 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi)); |
075559bc | 447 | annotate_frame_address_end (); |
52c6a6ac | 448 | } |
6a3fe0a4 | 449 | |
075559bc AC |
450 | if (get_frame_type (fi) == DUMMY_FRAME) |
451 | { | |
452 | annotate_function_call (); | |
453 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
454 | } | |
455 | else if (get_frame_type (fi) == SIGTRAMP_FRAME) | |
456 | { | |
457 | annotate_signal_handler_caller (); | |
458 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
459 | } | |
460 | ui_out_text (uiout, "\n"); | |
c906108c | 461 | annotate_frame_end (); |
075559bc AC |
462 | |
463 | do_cleanups (uiout_cleanup); | |
c906108c SS |
464 | return; |
465 | } | |
466 | ||
467 | /* If fi is not the innermost frame, that normally means that fi->pc | |
5a203e44 AC |
468 | points to *after* the call instruction, and we want to get the |
469 | line containing the call, never the next line. But if the next | |
470 | frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the next frame | |
471 | was not entered as the result of a call, and we want to get the | |
472 | line containing fi->pc. */ | |
1058bca7 | 473 | find_frame_sal (fi, &sal); |
c906108c | 474 | |
c5394b80 JM |
475 | location_print = (source == LOCATION |
476 | || source == LOC_AND_ADDRESS | |
477 | || source == SRC_AND_LOC); | |
478 | ||
479 | if (location_print || !sal.symtab) | |
480 | print_frame (fi, level, source, args, sal); | |
481 | ||
482 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
0378c332 | 483 | |
66609862 | 484 | if (sal.symtab) |
0378c332 | 485 | set_current_source_symtab_and_line (&sal); |
c5394b80 JM |
486 | |
487 | if (source_print && sal.symtab) | |
488 | { | |
0378c332 | 489 | struct symtab_and_line cursal; |
c5394b80 | 490 | int done = 0; |
bdd78e62 | 491 | int mid_statement = (source == SRC_LINE) && (get_frame_pc (fi) != sal.pc); |
c5394b80 JM |
492 | |
493 | if (annotation_level) | |
494 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
bdd78e62 | 495 | get_frame_pc (fi)); |
c5394b80 JM |
496 | if (!done) |
497 | { | |
ba4bbdcb | 498 | if (print_frame_info_listing_hook) |
66609862 | 499 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); |
ba4bbdcb | 500 | else |
c5394b80 | 501 | { |
ba4bbdcb KS |
502 | /* We used to do this earlier, but that is clearly |
503 | wrong. This function is used by many different | |
504 | parts of gdb, including normal_stop in infrun.c, | |
505 | which uses this to print out the current PC | |
506 | when we stepi/nexti into the middle of a source | |
507 | line. Only the command line really wants this | |
508 | behavior. Other UIs probably would like the | |
509 | ability to decide for themselves if it is desired. */ | |
510 | if (addressprint && mid_statement) | |
511 | { | |
bdd78e62 | 512 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi)); |
ba4bbdcb | 513 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
514 | } |
515 | ||
516 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 517 | } |
c5394b80 | 518 | } |
53cb0458 FN |
519 | /* Make sure we have at least a default source file */ |
520 | set_default_source_symtab_and_line (); | |
521 | cursal = get_current_source_symtab_and_line (); | |
0378c332 FN |
522 | cursal.line = max (sal.line - get_lines_to_list () / 2, 1); |
523 | set_current_source_symtab_and_line (&cursal); | |
c5394b80 JM |
524 | } |
525 | ||
526 | if (source != 0) | |
bdd78e62 | 527 | set_default_breakpoint (1, get_frame_pc (fi), sal.symtab, sal.line); |
c5394b80 JM |
528 | |
529 | annotate_frame_end (); | |
530 | ||
531 | gdb_flush (gdb_stdout); | |
532 | } | |
533 | ||
534 | static void | |
535 | print_frame (struct frame_info *fi, | |
536 | int level, | |
537 | int source, | |
538 | int args, | |
539 | struct symtab_and_line sal) | |
540 | { | |
541 | struct symbol *func; | |
52f0bd74 | 542 | char *funname = 0; |
c5394b80 | 543 | enum language funlang = language_unknown; |
8b93c638 JM |
544 | struct ui_stream *stb; |
545 | struct cleanup *old_chain; | |
e6e0bfab | 546 | struct cleanup *list_chain; |
8b93c638 JM |
547 | |
548 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 549 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c5394b80 | 550 | |
c4a09524 | 551 | func = find_pc_function (get_frame_address_in_block (fi)); |
c906108c SS |
552 | if (func) |
553 | { | |
554 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
555 | function (when we are in the first function in a file which |
556 | is compiled without debugging symbols, the previous function | |
557 | is compiled with debugging symbols, and the "foo.o" symbol | |
558 | that is supposed to tell us where the file with debugging symbols | |
559 | ends has been truncated by ar because it is longer than 15 | |
560 | characters). This also occurs if the user uses asm() to create | |
561 | a function but not stabs for it (in a file compiled -g). | |
562 | ||
563 | So look in the minimal symbol tables as well, and if it comes | |
564 | up with a larger address for the function use that instead. | |
565 | I don't think this can ever cause any problems; there shouldn't | |
566 | be any minimal symbols in the middle of a function; if this is | |
567 | ever changed many parts of GDB will need to be changed (and we'll | |
568 | create a find_pc_minimal_function or some such). */ | |
c906108c | 569 | |
c4a09524 | 570 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (get_frame_address_in_block (fi)); |
c906108c | 571 | if (msymbol != NULL |
c5aa993b | 572 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
573 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
574 | { | |
575 | #if 0 | |
576 | /* There is no particular reason to think the line number | |
577 | information is wrong. Someone might have just put in | |
578 | a label with asm() but left the line numbers alone. */ | |
579 | /* In this case we have no way of knowing the source file | |
580 | and line number, so don't print them. */ | |
581 | sal.symtab = 0; | |
582 | #endif | |
583 | /* We also don't know anything about the function besides | |
584 | its address and name. */ | |
585 | func = 0; | |
22abf04a | 586 | funname = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
587 | funlang = SYMBOL_LANGUAGE (msymbol); |
588 | } | |
589 | else | |
590 | { | |
de5ad195 | 591 | /* I'd like to use SYMBOL_PRINT_NAME() here, to display the |
c5394b80 JM |
592 | demangled name that we already have stored in the symbol |
593 | table, but we stored a version with DMGL_PARAMS turned | |
594 | on, and here we don't want to display parameters. So call | |
595 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
596 | that printf_symbol_filtered() will again try to demangle | |
597 | the name on the fly, but the issue is that if | |
598 | cplus_demangle() fails here, it'll fail there too. So we | |
599 | want to catch the failure ("demangled==NULL" case below) | |
600 | here, while we still have our hands on the function | |
601 | symbol.) */ | |
c5aa993b | 602 | char *demangled; |
22abf04a | 603 | funname = DEPRECATED_SYMBOL_NAME (func); |
c906108c | 604 | funlang = SYMBOL_LANGUAGE (func); |
c5aa993b JM |
605 | if (funlang == language_cplus) |
606 | { | |
607 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
608 | if (demangled == NULL) | |
c5394b80 JM |
609 | /* If the demangler fails, try the demangled name from |
610 | the symbol table. This'll have parameters, but | |
611 | that's preferable to diplaying a mangled name. */ | |
de5ad195 | 612 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b | 613 | } |
c906108c SS |
614 | } |
615 | } | |
616 | else | |
617 | { | |
c4a09524 | 618 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (get_frame_address_in_block (fi)); |
c906108c SS |
619 | if (msymbol != NULL) |
620 | { | |
22abf04a | 621 | funname = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
622 | funlang = SYMBOL_LANGUAGE (msymbol); |
623 | } | |
624 | } | |
625 | ||
bdd78e62 | 626 | annotate_frame_begin (level == -1 ? 0 : level, get_frame_pc (fi)); |
c5394b80 | 627 | |
666547aa | 628 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 JM |
629 | |
630 | if (level >= 0) | |
8b93c638 | 631 | { |
8b93c638 | 632 | ui_out_text (uiout, "#"); |
52c6a6ac | 633 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); |
8b93c638 | 634 | } |
c5394b80 | 635 | if (addressprint) |
bdd78e62 AC |
636 | if (get_frame_pc (fi) != sal.pc |
637 | || !sal.symtab | |
638 | || source == LOC_AND_ADDRESS) | |
c5394b80 JM |
639 | { |
640 | annotate_frame_address (); | |
bdd78e62 | 641 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi)); |
8b93c638 JM |
642 | annotate_frame_address_end (); |
643 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
644 | } |
645 | annotate_frame_function_name (); | |
8b93c638 JM |
646 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, |
647 | DMGL_ANSI); | |
648 | ui_out_field_stream (uiout, "func", stb); | |
649 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
650 | annotate_frame_args (); |
651 | ||
8b93c638 | 652 | ui_out_text (uiout, " ("); |
c5394b80 | 653 | if (args) |
c906108c | 654 | { |
c5394b80 | 655 | struct print_args_args args; |
d493eb33 | 656 | struct cleanup *args_list_chain; |
c5394b80 JM |
657 | args.fi = fi; |
658 | args.func = func; | |
659 | args.stream = gdb_stdout; | |
68c81b54 | 660 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 661 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
662 | /* FIXME: args must be a list. If one argument is a string it will |
663 | have " that will not be properly escaped. */ | |
666547aa | 664 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 665 | do_cleanups (args_list_chain); |
c5394b80 JM |
666 | QUIT; |
667 | } | |
8b93c638 | 668 | ui_out_text (uiout, ")"); |
c5394b80 JM |
669 | if (sal.symtab && sal.symtab->filename) |
670 | { | |
671 | annotate_frame_source_begin (); | |
8b93c638 JM |
672 | ui_out_wrap_hint (uiout, " "); |
673 | ui_out_text (uiout, " at "); | |
674 | annotate_frame_source_file (); | |
675 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
676 | annotate_frame_source_file_end (); | |
677 | ui_out_text (uiout, ":"); | |
678 | annotate_frame_source_line (); | |
679 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
680 | annotate_frame_source_end (); |
681 | } | |
c906108c | 682 | |
c5394b80 JM |
683 | #ifdef PC_SOLIB |
684 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 685 | { |
bdd78e62 | 686 | char *lib = PC_SOLIB (get_frame_pc (fi)); |
c5394b80 | 687 | if (lib) |
c906108c | 688 | { |
c5394b80 | 689 | annotate_frame_where (); |
8b93c638 JM |
690 | ui_out_wrap_hint (uiout, " "); |
691 | ui_out_text (uiout, " from "); | |
692 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 693 | } |
c906108c | 694 | } |
c5394b80 | 695 | #endif /* PC_SOLIB */ |
e514a9d6 | 696 | |
666547aa | 697 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 698 | do_cleanups (list_chain); |
8b93c638 JM |
699 | ui_out_text (uiout, "\n"); |
700 | do_cleanups (old_chain); | |
c906108c SS |
701 | } |
702 | \f | |
c906108c SS |
703 | /* Show the frame info. If this is the tui, it will be shown in |
704 | the source display otherwise, nothing is done */ | |
705 | void | |
fba45db2 | 706 | show_stack_frame (struct frame_info *fi) |
c906108c | 707 | { |
c906108c | 708 | } |
c906108c | 709 | \f |
c5aa993b | 710 | |
c906108c SS |
711 | /* Read a frame specification in whatever the appropriate format is. |
712 | Call error() if the specification is in any way invalid (i.e. | |
713 | this function never returns NULL). */ | |
714 | ||
715 | struct frame_info * | |
fba45db2 | 716 | parse_frame_specification (char *frame_exp) |
c906108c SS |
717 | { |
718 | int numargs = 0; | |
719 | #define MAXARGS 4 | |
720 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 721 | int level; |
c5aa993b | 722 | |
c906108c SS |
723 | if (frame_exp) |
724 | { | |
725 | char *addr_string, *p; | |
726 | struct cleanup *tmp_cleanup; | |
727 | ||
c5aa993b JM |
728 | while (*frame_exp == ' ') |
729 | frame_exp++; | |
c906108c SS |
730 | |
731 | while (*frame_exp) | |
732 | { | |
733 | if (numargs > MAXARGS) | |
734 | error ("Too many args in frame specification"); | |
735 | /* Parse an argument. */ | |
c5aa993b | 736 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 737 | ; |
c5aa993b | 738 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
739 | |
740 | { | |
3d6d86c6 | 741 | struct value *vp; |
ec9a3449 | 742 | |
b8c9b27d | 743 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 744 | |
24285e3a | 745 | /* NOTE: we call parse_and_eval and then both |
1aa20aa8 | 746 | value_as_long and value_as_address rather than calling |
24285e3a DT |
747 | parse_and_eval_long and parse_and_eval_address because |
748 | of the issue of potential side effects from evaluating | |
749 | the expression. */ | |
ec9a3449 DT |
750 | vp = parse_and_eval (addr_string); |
751 | if (numargs == 0) | |
752 | level = value_as_long (vp); | |
753 | ||
1aa20aa8 | 754 | args[numargs++] = value_as_address (vp); |
c906108c SS |
755 | do_cleanups (tmp_cleanup); |
756 | } | |
757 | ||
758 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
759 | while (*p == ' ') |
760 | p++; | |
c906108c SS |
761 | frame_exp = p; |
762 | } | |
763 | } | |
764 | ||
765 | switch (numargs) | |
766 | { | |
767 | case 0: | |
6e7f8b9c | 768 | if (deprecated_selected_frame == NULL) |
c906108c | 769 | error ("No selected frame."); |
6e7f8b9c | 770 | return deprecated_selected_frame; |
c906108c SS |
771 | /* NOTREACHED */ |
772 | case 1: | |
773 | { | |
c906108c | 774 | struct frame_info *fid = |
c5aa993b | 775 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
776 | struct frame_info *tfid; |
777 | ||
778 | if (level == 0) | |
779 | /* find_relative_frame was successful */ | |
780 | return fid; | |
781 | ||
782 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
783 | take at least 2 addresses. It is important to detect this case | |
784 | here so that "frame 100" does not give a confusing error message | |
785 | like "frame specification requires two addresses". This of course | |
786 | does not solve the "frame 100" problem for machines on which | |
787 | a frame specification can be made with one address. To solve | |
788 | that, we need a new syntax for a specifying a frame by address. | |
789 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
790 | two args, etc.), but people might think that is too much typing, | |
791 | so I guess *0x23,0x45 would be a possible alternative (commas | |
792 | really should be used instead of spaces to delimit; using spaces | |
793 | normally works in an expression). */ | |
794 | #ifdef SETUP_ARBITRARY_FRAME | |
823ca731 | 795 | error ("No frame %s", paddr_d (args[0])); |
c906108c SS |
796 | #endif |
797 | ||
798 | /* If (s)he specifies the frame with an address, he deserves what | |
799 | (s)he gets. Still, give the highest one that matches. */ | |
800 | ||
801 | for (fid = get_current_frame (); | |
8b36eed8 | 802 | fid && get_frame_base (fid) != args[0]; |
c906108c SS |
803 | fid = get_prev_frame (fid)) |
804 | ; | |
805 | ||
806 | if (fid) | |
807 | while ((tfid = get_prev_frame (fid)) && | |
8b36eed8 | 808 | (get_frame_base (tfid) == args[0])) |
c906108c | 809 | fid = tfid; |
c5aa993b | 810 | |
c906108c SS |
811 | /* We couldn't identify the frame as an existing frame, but |
812 | perhaps we can create one with a single argument. */ | |
813 | } | |
814 | ||
c5aa993b | 815 | default: |
c906108c SS |
816 | #ifdef SETUP_ARBITRARY_FRAME |
817 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
818 | #else | |
819 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 820 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
821 | if (numargs == 1) |
822 | return create_new_frame (args[0], 0); | |
823 | error ("Too many args in frame specification"); | |
824 | #endif | |
825 | /* NOTREACHED */ | |
826 | } | |
827 | /* NOTREACHED */ | |
828 | } | |
829 | ||
c906108c SS |
830 | /* Print verbosely the selected frame or the frame at address ADDR. |
831 | This means absolutely all information in the frame is printed. */ | |
832 | ||
833 | static void | |
fba45db2 | 834 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
835 | { |
836 | struct frame_info *fi; | |
837 | struct symtab_and_line sal; | |
838 | struct symbol *func; | |
839 | struct symtab *s; | |
840 | struct frame_info *calling_frame_info; | |
841 | int i, count, numregs; | |
842 | char *funname = 0; | |
843 | enum language funlang = language_unknown; | |
82de1e5b | 844 | const char *pc_regname; |
c906108c SS |
845 | |
846 | if (!target_has_stack) | |
847 | error ("No stack."); | |
848 | ||
82de1e5b AC |
849 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
850 | is not a good name. */ | |
851 | if (PC_REGNUM >= 0) | |
852 | /* OK, this is weird. The PC_REGNUM hardware register's value can | |
853 | easily not match that of the internal value returned by | |
854 | get_frame_pc(). */ | |
855 | pc_regname = REGISTER_NAME (PC_REGNUM); | |
856 | else | |
857 | /* But then, this is weird to. Even without PC_REGNUM, an | |
858 | architectures will often have a hardware register called "pc", | |
859 | and that register's value, again, can easily not match | |
860 | get_frame_pc(). */ | |
861 | pc_regname = "pc"; | |
862 | ||
c906108c SS |
863 | fi = parse_frame_specification (addr_exp); |
864 | if (fi == NULL) | |
865 | error ("Invalid frame specified."); | |
866 | ||
1058bca7 | 867 | find_frame_sal (fi, &sal); |
c906108c | 868 | func = get_frame_function (fi); |
1058bca7 AC |
869 | /* FIXME: cagney/2002-11-28: Why bother? Won't sal.symtab contain |
870 | the same value. */ | |
bdd78e62 | 871 | s = find_pc_symtab (get_frame_pc (fi)); |
c906108c SS |
872 | if (func) |
873 | { | |
de5ad195 | 874 | /* I'd like to use SYMBOL_PRINT_NAME() here, to display |
c906108c SS |
875 | * the demangled name that we already have stored in |
876 | * the symbol table, but we stored a version with | |
877 | * DMGL_PARAMS turned on, and here we don't want | |
878 | * to display parameters. So call the demangler again, | |
879 | * with DMGL_ANSI only. RT | |
880 | * (Yes, I know that printf_symbol_filtered() will | |
881 | * again try to demangle the name on the fly, but | |
882 | * the issue is that if cplus_demangle() fails here, | |
883 | * it'll fail there too. So we want to catch the failure | |
884 | * ("demangled==NULL" case below) here, while we still | |
885 | * have our hands on the function symbol.) | |
886 | */ | |
c5aa993b | 887 | char *demangled; |
22abf04a | 888 | funname = DEPRECATED_SYMBOL_NAME (func); |
c5aa993b JM |
889 | funlang = SYMBOL_LANGUAGE (func); |
890 | if (funlang == language_cplus) | |
891 | { | |
892 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
893 | /* If the demangler fails, try the demangled name | |
894 | * from the symbol table. This'll have parameters, | |
895 | * but that's preferable to diplaying a mangled name. | |
896 | */ | |
897 | if (demangled == NULL) | |
de5ad195 | 898 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b | 899 | } |
c906108c SS |
900 | } |
901 | else | |
902 | { | |
aa1ee363 | 903 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi)); |
c906108c SS |
904 | if (msymbol != NULL) |
905 | { | |
22abf04a | 906 | funname = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
907 | funlang = SYMBOL_LANGUAGE (msymbol); |
908 | } | |
909 | } | |
910 | calling_frame_info = get_prev_frame (fi); | |
911 | ||
6e7f8b9c | 912 | if (!addr_exp && frame_relative_level (deprecated_selected_frame) >= 0) |
c906108c | 913 | { |
b31da25e | 914 | printf_filtered ("Stack level %d, frame at ", |
6e7f8b9c | 915 | frame_relative_level (deprecated_selected_frame)); |
8b36eed8 | 916 | print_address_numeric (get_frame_base (fi), 1, gdb_stdout); |
c906108c SS |
917 | printf_filtered (":\n"); |
918 | } | |
919 | else | |
920 | { | |
921 | printf_filtered ("Stack frame at "); | |
8b36eed8 | 922 | print_address_numeric (get_frame_base (fi), 1, gdb_stdout); |
c906108c SS |
923 | printf_filtered (":\n"); |
924 | } | |
82de1e5b | 925 | printf_filtered (" %s = ", pc_regname); |
bdd78e62 | 926 | print_address_numeric (get_frame_pc (fi), 1, gdb_stdout); |
c906108c SS |
927 | |
928 | wrap_here (" "); | |
929 | if (funname) | |
930 | { | |
931 | printf_filtered (" in "); | |
932 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
933 | DMGL_ANSI | DMGL_PARAMS); | |
934 | } | |
935 | wrap_here (" "); | |
936 | if (sal.symtab) | |
937 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
938 | puts_filtered ("; "); | |
939 | wrap_here (" "); | |
82de1e5b | 940 | printf_filtered ("saved %s ", pc_regname); |
f18c5a73 | 941 | print_address_numeric (frame_pc_unwind (fi), 1, gdb_stdout); |
c906108c SS |
942 | printf_filtered ("\n"); |
943 | ||
944 | { | |
392a587b JM |
945 | int frameless; |
946 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
947 | if (frameless) |
948 | printf_filtered (" (FRAMELESS),"); | |
949 | } | |
950 | ||
951 | if (calling_frame_info) | |
952 | { | |
953 | printf_filtered (" called by frame at "); | |
8b36eed8 AC |
954 | print_address_numeric (get_frame_base (calling_frame_info), |
955 | 1, gdb_stdout); | |
c906108c | 956 | } |
75e3c1f9 | 957 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
958 | puts_filtered (","); |
959 | wrap_here (" "); | |
75e3c1f9 | 960 | if (get_next_frame (fi)) |
c906108c SS |
961 | { |
962 | printf_filtered (" caller of frame at "); | |
8b36eed8 AC |
963 | print_address_numeric (get_frame_base (get_next_frame (fi)), 1, |
964 | gdb_stdout); | |
c906108c | 965 | } |
75e3c1f9 | 966 | if (get_next_frame (fi) || calling_frame_info) |
c906108c SS |
967 | puts_filtered ("\n"); |
968 | if (s) | |
1058bca7 AC |
969 | printf_filtered (" source language %s.\n", |
970 | language_str (s->language)); | |
c906108c SS |
971 | |
972 | #ifdef PRINT_EXTRA_FRAME_INFO | |
973 | PRINT_EXTRA_FRAME_INFO (fi); | |
974 | #endif | |
975 | ||
976 | { | |
977 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 978 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
979 | /* Number of args for this frame, or -1 if unknown. */ |
980 | int numargs; | |
981 | ||
982 | if (arg_list == 0) | |
983 | printf_filtered (" Arglist at unknown address.\n"); | |
984 | else | |
985 | { | |
986 | printf_filtered (" Arglist at "); | |
987 | print_address_numeric (arg_list, 1, gdb_stdout); | |
988 | printf_filtered (","); | |
989 | ||
983a287a AC |
990 | if (!FRAME_NUM_ARGS_P ()) |
991 | { | |
992 | numargs = -1; | |
993 | puts_filtered (" args: "); | |
994 | } | |
c906108c | 995 | else |
983a287a AC |
996 | { |
997 | numargs = FRAME_NUM_ARGS (fi); | |
998 | gdb_assert (numargs >= 0); | |
999 | if (numargs == 0) | |
1000 | puts_filtered (" no args."); | |
1001 | else if (numargs == 1) | |
1002 | puts_filtered (" 1 arg: "); | |
1003 | else | |
1004 | printf_filtered (" %d args: ", numargs); | |
1005 | } | |
c906108c SS |
1006 | print_frame_args (func, fi, numargs, gdb_stdout); |
1007 | puts_filtered ("\n"); | |
1008 | } | |
1009 | } | |
1010 | { | |
1011 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1012 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1013 | |
1014 | if (arg_list == 0) | |
1015 | printf_filtered (" Locals at unknown address,"); | |
1016 | else | |
1017 | { | |
1018 | printf_filtered (" Locals at "); | |
1019 | print_address_numeric (arg_list, 1, gdb_stdout); | |
1020 | printf_filtered (","); | |
1021 | } | |
1022 | } | |
1023 | ||
f30ee0bc | 1024 | if (DEPRECATED_FRAME_INIT_SAVED_REGS_P () |
1b1d3794 | 1025 | && deprecated_get_frame_saved_regs (fi) == NULL) |
f30ee0bc | 1026 | DEPRECATED_FRAME_INIT_SAVED_REGS (fi); |
4f460812 AC |
1027 | /* Print as much information as possible on the location of all the |
1028 | registers. */ | |
1029 | { | |
1030 | enum lval_type lval; | |
1031 | int optimized; | |
1032 | CORE_ADDR addr; | |
1033 | int realnum; | |
1034 | int count; | |
1035 | int i; | |
1036 | int need_nl = 1; | |
1037 | ||
1038 | /* The sp is special; what's displayed isn't the save address, but | |
1039 | the value of the previous frame's sp. This is a legacy thing, | |
1040 | at one stage the frame cached the previous frame's SP instead | |
1041 | of its address, hence it was easiest to just display the cached | |
1042 | value. */ | |
1043 | if (SP_REGNUM >= 0) | |
1044 | { | |
1045 | /* Find out the location of the saved stack pointer with out | |
1046 | actually evaluating it. */ | |
1047 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
1048 | &realnum, NULL); | |
1049 | if (!optimized && lval == not_lval) | |
c906108c | 1050 | { |
d9d9c31f | 1051 | char value[MAX_REGISTER_SIZE]; |
4f460812 AC |
1052 | CORE_ADDR sp; |
1053 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
1054 | &realnum, value); | |
af1342ab AC |
1055 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1056 | stack pointer was packed as an unsigned integer. That | |
1057 | may or may not be valid. */ | |
1058 | sp = extract_unsigned_integer (value, REGISTER_RAW_SIZE (SP_REGNUM)); | |
4f460812 AC |
1059 | printf_filtered (" Previous frame's sp is "); |
1060 | print_address_numeric (sp, 1, gdb_stdout); | |
1061 | printf_filtered ("\n"); | |
1062 | need_nl = 0; | |
c906108c | 1063 | } |
4f460812 AC |
1064 | else if (!optimized && lval == lval_memory) |
1065 | { | |
1066 | printf_filtered (" Previous frame's sp at "); | |
1067 | print_address_numeric (addr, 1, gdb_stdout); | |
1068 | printf_filtered ("\n"); | |
1069 | need_nl = 0; | |
1070 | } | |
1071 | else if (!optimized && lval == lval_register) | |
1072 | { | |
1073 | printf_filtered (" Previous frame's sp in %s\n", | |
1074 | REGISTER_NAME (realnum)); | |
1075 | need_nl = 0; | |
1076 | } | |
1077 | /* else keep quiet. */ | |
1078 | } | |
1079 | ||
1080 | count = 0; | |
1081 | numregs = NUM_REGS + NUM_PSEUDO_REGS; | |
1082 | for (i = 0; i < numregs; i++) | |
898c62f5 DJ |
1083 | if (i != SP_REGNUM |
1084 | && gdbarch_register_reggroup_p (current_gdbarch, i, all_reggroup)) | |
4f460812 AC |
1085 | { |
1086 | /* Find out the location of the saved register without | |
1087 | fetching the corresponding value. */ | |
1088 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
1089 | NULL); | |
1090 | /* For moment, only display registers that were saved on the | |
1091 | stack. */ | |
1092 | if (!optimized && lval == lval_memory) | |
1093 | { | |
1094 | if (count == 0) | |
1095 | puts_filtered (" Saved registers:\n "); | |
1096 | else | |
1097 | puts_filtered (","); | |
1098 | wrap_here (" "); | |
1099 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
1100 | print_address_numeric (addr, 1, gdb_stdout); | |
1101 | count++; | |
1102 | } | |
1103 | } | |
1104 | if (count || need_nl) | |
c906108c | 1105 | puts_filtered ("\n"); |
4f460812 | 1106 | } |
c906108c SS |
1107 | } |
1108 | ||
1109 | #if 0 | |
1110 | /* Set a limit on the number of frames printed by default in a | |
1111 | backtrace. */ | |
1112 | ||
1113 | static int backtrace_limit; | |
1114 | ||
1115 | static void | |
fba45db2 | 1116 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 1117 | { |
bb518678 | 1118 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
1119 | |
1120 | if (count < 0) | |
1121 | error ("Negative argument not meaningful as backtrace limit."); | |
1122 | ||
1123 | backtrace_limit = count; | |
1124 | } | |
1125 | ||
1126 | static void | |
fba45db2 | 1127 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1128 | { |
1129 | if (arg) | |
1130 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1131 | ||
1132 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1133 | } | |
1134 | #endif | |
1135 | ||
1136 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1137 | ||
a14ed312 KB |
1138 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1139 | int from_tty); | |
c906108c | 1140 | static void |
fba45db2 | 1141 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1142 | { |
1143 | struct frame_info *fi; | |
52f0bd74 AC |
1144 | int count; |
1145 | int i; | |
1146 | struct frame_info *trailing; | |
1147 | int trailing_level; | |
c906108c SS |
1148 | |
1149 | if (!target_has_stack) | |
1150 | error ("No stack."); | |
1151 | ||
1152 | /* The following code must do two things. First, it must | |
1153 | set the variable TRAILING to the frame from which we should start | |
1154 | printing. Second, it must set the variable count to the number | |
1155 | of frames which we should print, or -1 if all of them. */ | |
1156 | trailing = get_current_frame (); | |
d082b2bb AC |
1157 | |
1158 | /* The target can be in a state where there is no valid frames | |
1159 | (e.g., just connected). */ | |
1160 | if (trailing == NULL) | |
1161 | error ("No stack."); | |
1162 | ||
c906108c SS |
1163 | trailing_level = 0; |
1164 | if (count_exp) | |
1165 | { | |
bb518678 | 1166 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1167 | if (count < 0) |
1168 | { | |
1169 | struct frame_info *current; | |
1170 | ||
1171 | count = -count; | |
1172 | ||
1173 | current = trailing; | |
1174 | while (current && count--) | |
1175 | { | |
1176 | QUIT; | |
1177 | current = get_prev_frame (current); | |
1178 | } | |
c5aa993b | 1179 | |
c906108c SS |
1180 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1181 | will be COUNT below it. */ | |
1182 | while (current) | |
1183 | { | |
1184 | QUIT; | |
1185 | trailing = get_prev_frame (trailing); | |
1186 | current = get_prev_frame (current); | |
1187 | trailing_level++; | |
1188 | } | |
c5aa993b | 1189 | |
c906108c SS |
1190 | count = -1; |
1191 | } | |
1192 | } | |
1193 | else | |
1194 | count = -1; | |
1195 | ||
1196 | if (info_verbose) | |
1197 | { | |
1198 | struct partial_symtab *ps; | |
c5aa993b | 1199 | |
c906108c | 1200 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1201 | a separate pass so that "Reading in symbols for xxx" messages |
1202 | don't screw up the appearance of the backtrace. Also | |
1203 | if people have strong opinions against reading symbols for | |
1204 | backtrace this may have to be an option. */ | |
c906108c SS |
1205 | i = count; |
1206 | for (fi = trailing; | |
1207 | fi != NULL && i--; | |
1208 | fi = get_prev_frame (fi)) | |
1209 | { | |
1210 | QUIT; | |
c4a09524 | 1211 | ps = find_pc_psymtab (get_frame_address_in_block (fi)); |
c906108c SS |
1212 | if (ps) |
1213 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | for (i = 0, fi = trailing; | |
1218 | fi && count--; | |
1219 | i++, fi = get_prev_frame (fi)) | |
1220 | { | |
1221 | QUIT; | |
1222 | ||
1223 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1224 | means further attempts to backtrace would fail (on the other |
1225 | hand, perhaps the code does or could be fixed to make sure | |
1226 | the frame->prev field gets set to NULL in that case). */ | |
7789c6f5 | 1227 | print_frame_info (fi, trailing_level + i, 0, 1); |
c906108c | 1228 | if (show_locals) |
c5aa993b | 1229 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1230 | } |
1231 | ||
1232 | /* If we've stopped before the end, mention that. */ | |
1233 | if (fi && from_tty) | |
1234 | printf_filtered ("(More stack frames follow...)\n"); | |
1235 | } | |
1236 | ||
1237 | static void | |
fba45db2 | 1238 | backtrace_command (char *arg, int from_tty) |
c906108c | 1239 | { |
c5aa993b JM |
1240 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1241 | char **argv = (char **) NULL; | |
1242 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1243 | char *argPtr = arg; | |
c906108c | 1244 | |
c5aa993b | 1245 | if (arg != (char *) NULL) |
c906108c SS |
1246 | { |
1247 | int i; | |
1248 | ||
c5aa993b | 1249 | argv = buildargv (arg); |
7a292a7a | 1250 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1251 | argc = 0; |
c5aa993b JM |
1252 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1253 | { | |
745b8ca0 | 1254 | unsigned int j; |
c5aa993b JM |
1255 | |
1256 | for (j = 0; (j < strlen (argv[i])); j++) | |
1257 | argv[i][j] = tolower (argv[i][j]); | |
1258 | ||
1259 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1260 | argIndicatingFullTrace = argc; | |
1261 | else | |
1262 | { | |
1263 | argc++; | |
1264 | totArgLen += strlen (argv[i]); | |
1265 | } | |
1266 | } | |
c906108c SS |
1267 | totArgLen += argc; |
1268 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1269 | { |
1270 | if (totArgLen > 0) | |
1271 | { | |
1272 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1273 | if (!argPtr) | |
1274 | nomem (0); | |
1275 | else | |
1276 | { | |
1277 | memset (argPtr, 0, totArgLen + 1); | |
1278 | for (i = 0; (i < (argc + 1)); i++) | |
1279 | { | |
1280 | if (i != argIndicatingFullTrace) | |
1281 | { | |
1282 | strcat (argPtr, argv[i]); | |
1283 | strcat (argPtr, " "); | |
1284 | } | |
1285 | } | |
1286 | } | |
1287 | } | |
1288 | else | |
1289 | argPtr = (char *) NULL; | |
1290 | } | |
c906108c SS |
1291 | } |
1292 | ||
1293 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1294 | ||
1295 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1296 | xfree (argPtr); |
c906108c SS |
1297 | |
1298 | if (old_chain) | |
c5aa993b | 1299 | do_cleanups (old_chain); |
c906108c SS |
1300 | } |
1301 | ||
a14ed312 | 1302 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1303 | static void |
fba45db2 | 1304 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1305 | { |
1306 | backtrace_command_1 (arg, 1, from_tty); | |
1307 | } | |
c906108c | 1308 | \f |
c5aa993b | 1309 | |
c906108c SS |
1310 | /* Print the local variables of a block B active in FRAME. |
1311 | Return 1 if any variables were printed; 0 otherwise. */ | |
1312 | ||
1313 | static int | |
de4f826b DC |
1314 | print_block_frame_locals (struct block *b, struct frame_info *fi, |
1315 | int num_tabs, struct ui_file *stream) | |
c906108c | 1316 | { |
de4f826b DC |
1317 | struct dict_iterator iter; |
1318 | int j; | |
1319 | struct symbol *sym; | |
1320 | int values_printed = 0; | |
c906108c | 1321 | |
de4f826b | 1322 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1323 | { |
c906108c SS |
1324 | switch (SYMBOL_CLASS (sym)) |
1325 | { | |
1326 | case LOC_LOCAL: | |
1327 | case LOC_REGISTER: | |
1328 | case LOC_STATIC: | |
1329 | case LOC_BASEREG: | |
4c2df51b | 1330 | case LOC_COMPUTED: |
c906108c SS |
1331 | values_printed = 1; |
1332 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1333 | fputs_filtered ("\t", stream); |
de5ad195 | 1334 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
c906108c SS |
1335 | fputs_filtered (" = ", stream); |
1336 | print_variable_value (sym, fi, stream); | |
1337 | fprintf_filtered (stream, "\n"); | |
1338 | break; | |
1339 | ||
1340 | default: | |
1341 | /* Ignore symbols which are not locals. */ | |
1342 | break; | |
1343 | } | |
1344 | } | |
1345 | return values_printed; | |
1346 | } | |
1347 | ||
1348 | /* Same, but print labels. */ | |
1349 | ||
1350 | static int | |
fba45db2 | 1351 | print_block_frame_labels (struct block *b, int *have_default, |
aa1ee363 | 1352 | struct ui_file *stream) |
c906108c | 1353 | { |
de4f826b | 1354 | struct dict_iterator iter; |
52f0bd74 AC |
1355 | struct symbol *sym; |
1356 | int values_printed = 0; | |
c906108c | 1357 | |
de4f826b | 1358 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1359 | { |
22abf04a | 1360 | if (STREQ (DEPRECATED_SYMBOL_NAME (sym), "default")) |
c906108c SS |
1361 | { |
1362 | if (*have_default) | |
1363 | continue; | |
1364 | *have_default = 1; | |
1365 | } | |
1366 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1367 | { | |
1368 | struct symtab_and_line sal; | |
1369 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1370 | values_printed = 1; | |
de5ad195 | 1371 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
c906108c SS |
1372 | if (addressprint) |
1373 | { | |
1374 | fprintf_filtered (stream, " "); | |
1375 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1376 | } | |
1377 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1378 | sal.symtab->filename, sal.line); | |
1379 | } | |
1380 | } | |
1381 | return values_printed; | |
1382 | } | |
1383 | ||
1384 | /* Print on STREAM all the local variables in frame FRAME, | |
1385 | including all the blocks active in that frame | |
1386 | at its current pc. | |
1387 | ||
1388 | Returns 1 if the job was done, | |
1389 | or 0 if nothing was printed because we have no info | |
1390 | on the function running in FRAME. */ | |
1391 | ||
1392 | static void | |
aa1ee363 AC |
1393 | print_frame_local_vars (struct frame_info *fi, int num_tabs, |
1394 | struct ui_file *stream) | |
c906108c | 1395 | { |
52f0bd74 AC |
1396 | struct block *block = get_frame_block (fi, 0); |
1397 | int values_printed = 0; | |
c906108c SS |
1398 | |
1399 | if (block == 0) | |
1400 | { | |
1401 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1402 | return; | |
1403 | } | |
c5aa993b | 1404 | |
c906108c SS |
1405 | while (block != 0) |
1406 | { | |
1407 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1408 | values_printed = 1; | |
1409 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1410 | Don't continue to its superblock, the block of |
1411 | per-file symbols. */ | |
c906108c SS |
1412 | if (BLOCK_FUNCTION (block)) |
1413 | break; | |
1414 | block = BLOCK_SUPERBLOCK (block); | |
1415 | } | |
1416 | ||
1417 | if (!values_printed) | |
1418 | { | |
1419 | fprintf_filtered (stream, "No locals.\n"); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | /* Same, but print labels. */ | |
1424 | ||
1425 | static void | |
aa1ee363 AC |
1426 | print_frame_label_vars (struct frame_info *fi, int this_level_only, |
1427 | struct ui_file *stream) | |
c906108c | 1428 | { |
52f0bd74 AC |
1429 | struct blockvector *bl; |
1430 | struct block *block = get_frame_block (fi, 0); | |
1431 | int values_printed = 0; | |
c906108c SS |
1432 | int index, have_default = 0; |
1433 | char *blocks_printed; | |
bdd78e62 | 1434 | CORE_ADDR pc = get_frame_pc (fi); |
c906108c SS |
1435 | |
1436 | if (block == 0) | |
1437 | { | |
1438 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1439 | return; | |
1440 | } | |
1441 | ||
1442 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1443 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1444 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1445 | ||
1446 | while (block != 0) | |
1447 | { | |
1448 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1449 | int last_index; | |
1450 | ||
1451 | if (bl != blockvector_for_pc (end, &index)) | |
1452 | error ("blockvector blotch"); | |
1453 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1454 | error ("blockvector botch"); | |
1455 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1456 | index += 1; | |
1457 | ||
1458 | /* Don't print out blocks that have gone by. */ | |
1459 | while (index < last_index | |
1460 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1461 | index++; | |
1462 | ||
1463 | while (index < last_index | |
1464 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1465 | { | |
1466 | if (blocks_printed[index] == 0) | |
1467 | { | |
1468 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1469 | values_printed = 1; | |
1470 | blocks_printed[index] = 1; | |
1471 | } | |
1472 | index++; | |
1473 | } | |
1474 | if (have_default) | |
1475 | return; | |
1476 | if (values_printed && this_level_only) | |
1477 | return; | |
1478 | ||
1479 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1480 | Don't continue to its superblock, the block of |
1481 | per-file symbols. */ | |
c906108c SS |
1482 | if (BLOCK_FUNCTION (block)) |
1483 | break; | |
1484 | block = BLOCK_SUPERBLOCK (block); | |
1485 | } | |
1486 | ||
1487 | if (!values_printed && !this_level_only) | |
1488 | { | |
1489 | fprintf_filtered (stream, "No catches.\n"); | |
1490 | } | |
1491 | } | |
1492 | ||
c906108c | 1493 | void |
fba45db2 | 1494 | locals_info (char *args, int from_tty) |
c906108c | 1495 | { |
6e7f8b9c | 1496 | if (!deprecated_selected_frame) |
c906108c | 1497 | error ("No frame selected."); |
6e7f8b9c | 1498 | print_frame_local_vars (deprecated_selected_frame, 0, gdb_stdout); |
c906108c SS |
1499 | } |
1500 | ||
1501 | static void | |
fba45db2 | 1502 | catch_info (char *ignore, int from_tty) |
c906108c | 1503 | { |
c5aa993b | 1504 | struct symtab_and_line *sal; |
c906108c | 1505 | |
c5aa993b | 1506 | /* Check for target support for exception handling */ |
c906108c SS |
1507 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1508 | if (sal) | |
1509 | { | |
1510 | /* Currently not handling this */ | |
1511 | /* Ideally, here we should interact with the C++ runtime | |
1512 | system to find the list of active handlers, etc. */ | |
1513 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1514 | #if 0 | |
6e7f8b9c | 1515 | if (!deprecated_selected_frame) |
c5aa993b | 1516 | error ("No frame selected."); |
c906108c SS |
1517 | #endif |
1518 | } | |
1519 | else | |
1520 | { | |
c5aa993b | 1521 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
6e7f8b9c | 1522 | if (!deprecated_selected_frame) |
c5aa993b JM |
1523 | error ("No frame selected."); |
1524 | ||
6e7f8b9c | 1525 | print_frame_label_vars (deprecated_selected_frame, 0, gdb_stdout); |
c906108c SS |
1526 | } |
1527 | } | |
1528 | ||
1529 | static void | |
aa1ee363 AC |
1530 | print_frame_arg_vars (struct frame_info *fi, |
1531 | struct ui_file *stream) | |
c906108c SS |
1532 | { |
1533 | struct symbol *func = get_frame_function (fi); | |
52f0bd74 | 1534 | struct block *b; |
de4f826b | 1535 | struct dict_iterator iter; |
52f0bd74 AC |
1536 | struct symbol *sym, *sym2; |
1537 | int values_printed = 0; | |
c906108c SS |
1538 | |
1539 | if (func == 0) | |
1540 | { | |
1541 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1542 | return; | |
1543 | } | |
1544 | ||
1545 | b = SYMBOL_BLOCK_VALUE (func); | |
de4f826b | 1546 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1547 | { |
c906108c SS |
1548 | switch (SYMBOL_CLASS (sym)) |
1549 | { | |
1550 | case LOC_ARG: | |
1551 | case LOC_LOCAL_ARG: | |
1552 | case LOC_REF_ARG: | |
1553 | case LOC_REGPARM: | |
1554 | case LOC_REGPARM_ADDR: | |
1555 | case LOC_BASEREG_ARG: | |
4c2df51b | 1556 | case LOC_COMPUTED_ARG: |
c906108c | 1557 | values_printed = 1; |
de5ad195 | 1558 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
c906108c SS |
1559 | fputs_filtered (" = ", stream); |
1560 | ||
1561 | /* We have to look up the symbol because arguments can have | |
1562 | two entries (one a parameter, one a local) and the one we | |
1563 | want is the local, which lookup_symbol will find for us. | |
1564 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1565 | small structure and gcc2 when the argument type is float | |
1566 | and it is passed as a double and converted to float by | |
1567 | the prologue (in the latter case the type of the LOC_ARG | |
1568 | symbol is double and the type of the LOC_LOCAL symbol is | |
1569 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1570 | are not combined in symbol-reading. */ | |
1571 | ||
22abf04a | 1572 | sym2 = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym), |
176620f1 | 1573 | b, VAR_DOMAIN, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1574 | print_variable_value (sym2, fi, stream); |
1575 | fprintf_filtered (stream, "\n"); | |
1576 | break; | |
1577 | ||
1578 | default: | |
1579 | /* Don't worry about things which aren't arguments. */ | |
1580 | break; | |
1581 | } | |
1582 | } | |
c906108c SS |
1583 | if (!values_printed) |
1584 | { | |
1585 | fprintf_filtered (stream, "No arguments.\n"); | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | void | |
fba45db2 | 1590 | args_info (char *ignore, int from_tty) |
c906108c | 1591 | { |
6e7f8b9c | 1592 | if (!deprecated_selected_frame) |
c906108c | 1593 | error ("No frame selected."); |
6e7f8b9c | 1594 | print_frame_arg_vars (deprecated_selected_frame, gdb_stdout); |
c906108c SS |
1595 | } |
1596 | ||
1597 | ||
1598 | static void | |
fba45db2 | 1599 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1600 | { |
c5aa993b JM |
1601 | args_info (ignore, from_tty); |
1602 | locals_info (ignore, from_tty); | |
c906108c | 1603 | } |
c906108c | 1604 | \f |
c5aa993b | 1605 | |
0f7d239c AC |
1606 | /* Select frame FI. Also print the stack frame and show the source if |
1607 | this is the tui version. */ | |
bedfa57b AC |
1608 | static void |
1609 | select_and_print_frame (struct frame_info *fi) | |
c906108c | 1610 | { |
0f7d239c | 1611 | select_frame (fi); |
c906108c SS |
1612 | if (fi) |
1613 | { | |
bedfa57b | 1614 | print_stack_frame (fi, frame_relative_level (fi), 1); |
c906108c SS |
1615 | } |
1616 | } | |
c906108c | 1617 | \f |
c906108c | 1618 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1619 | Can return zero under various legitimate circumstances. |
1620 | ||
1621 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1622 | code address within the block returned. We use this to decide | |
1623 | which macros are in scope. */ | |
c906108c SS |
1624 | |
1625 | struct block * | |
ae767bfb | 1626 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1627 | { |
1628 | if (!target_has_stack) | |
1629 | return 0; | |
1630 | ||
8c69fc49 AC |
1631 | /* NOTE: cagney/2002-11-28: Why go to all this effort to not create |
1632 | a selected/current frame? Perhaphs this function is called, | |
1633 | indirectly, by WFI in "infrun.c" where avoiding the creation of | |
1634 | an inner most frame is very important (it slows down single | |
1635 | step). I suspect, though that this was true in the deep dark | |
1636 | past but is no longer the case. A mindless look at all the | |
1637 | callers tends to support this theory. I think we should be able | |
1638 | to assume that there is always a selcted frame. */ | |
6e7f8b9c AC |
1639 | /* gdb_assert (deprecated_selected_frame != NULL); So, do you feel |
1640 | lucky? */ | |
1641 | if (!deprecated_selected_frame) | |
8c69fc49 AC |
1642 | { |
1643 | CORE_ADDR pc = read_pc (); | |
1644 | if (addr_in_block != NULL) | |
1645 | *addr_in_block = pc; | |
1646 | return block_for_pc (pc); | |
1647 | } | |
6e7f8b9c | 1648 | return get_frame_block (deprecated_selected_frame, addr_in_block); |
c906108c SS |
1649 | } |
1650 | ||
1651 | /* Find a frame a certain number of levels away from FRAME. | |
1652 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1653 | Positive means go to earlier frames (up); negative, the reverse. | |
1654 | The int that contains the number of levels is counted toward | |
1655 | zero as the frames for those levels are found. | |
1656 | If the top or bottom frame is reached, that frame is returned, | |
1657 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1658 | how much farther the original request asked to go. */ | |
1659 | ||
1660 | struct frame_info * | |
aa1ee363 AC |
1661 | find_relative_frame (struct frame_info *frame, |
1662 | int *level_offset_ptr) | |
c906108c | 1663 | { |
52f0bd74 AC |
1664 | struct frame_info *prev; |
1665 | struct frame_info *frame1; | |
c906108c SS |
1666 | |
1667 | /* Going up is simple: just do get_prev_frame enough times | |
1668 | or until initial frame is reached. */ | |
1669 | while (*level_offset_ptr > 0) | |
1670 | { | |
1671 | prev = get_prev_frame (frame); | |
1672 | if (prev == 0) | |
1673 | break; | |
1674 | (*level_offset_ptr)--; | |
1675 | frame = prev; | |
1676 | } | |
1677 | /* Going down is just as simple. */ | |
1678 | if (*level_offset_ptr < 0) | |
1679 | { | |
c5aa993b JM |
1680 | while (*level_offset_ptr < 0) |
1681 | { | |
1682 | frame1 = get_next_frame (frame); | |
1683 | if (!frame1) | |
1684 | break; | |
1685 | frame = frame1; | |
1686 | (*level_offset_ptr)++; | |
1687 | } | |
c906108c SS |
1688 | } |
1689 | return frame; | |
1690 | } | |
1691 | ||
1692 | /* The "select_frame" command. With no arg, NOP. | |
1693 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1694 | valid level. Otherwise, treat level_exp as an address expression | |
1695 | and select it. See parse_frame_specification for more info on proper | |
1696 | frame expressions. */ | |
1697 | ||
8b93c638 | 1698 | void |
fba45db2 | 1699 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1700 | { |
bfb3754e | 1701 | struct frame_info *frame; |
6e7f8b9c | 1702 | int level = frame_relative_level (deprecated_selected_frame); |
c906108c SS |
1703 | |
1704 | if (!target_has_stack) | |
1705 | error ("No stack."); | |
1706 | ||
1707 | frame = parse_frame_specification (level_exp); | |
1708 | ||
0f7d239c | 1709 | select_frame (frame); |
6e7f8b9c AC |
1710 | if (level != frame_relative_level (deprecated_selected_frame)) |
1711 | selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame)); | |
c906108c SS |
1712 | } |
1713 | ||
1714 | /* The "frame" command. With no arg, print selected frame briefly. | |
1715 | With arg, behaves like select_frame and then prints the selected | |
1716 | frame. */ | |
1717 | ||
1718 | void | |
fba45db2 | 1719 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1720 | { |
1721 | select_frame_command (level_exp, from_tty); | |
7789c6f5 EZ |
1722 | print_stack_frame (deprecated_selected_frame, |
1723 | frame_relative_level (deprecated_selected_frame), 1); | |
c906108c SS |
1724 | } |
1725 | ||
1726 | /* The XDB Compatibility command to print the current frame. */ | |
1727 | ||
7a292a7a | 1728 | static void |
fba45db2 | 1729 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1730 | { |
6e7f8b9c | 1731 | if (target_has_stack == 0 || deprecated_selected_frame == 0) |
c5aa993b | 1732 | error ("No stack."); |
7789c6f5 | 1733 | print_stack_frame (deprecated_selected_frame, |
6e7f8b9c | 1734 | frame_relative_level (deprecated_selected_frame), 1); |
7a292a7a | 1735 | } |
c906108c SS |
1736 | |
1737 | /* Select the frame up one or COUNT stack levels | |
1738 | from the previously selected frame, and print it briefly. */ | |
1739 | ||
c906108c | 1740 | static void |
fba45db2 | 1741 | up_silently_base (char *count_exp) |
c906108c | 1742 | { |
52f0bd74 | 1743 | struct frame_info *fi; |
c906108c SS |
1744 | int count = 1, count1; |
1745 | if (count_exp) | |
bb518678 | 1746 | count = parse_and_eval_long (count_exp); |
c906108c | 1747 | count1 = count; |
c5aa993b | 1748 | |
6e7f8b9c | 1749 | if (target_has_stack == 0 || deprecated_selected_frame == 0) |
c906108c SS |
1750 | error ("No stack."); |
1751 | ||
6e7f8b9c | 1752 | fi = find_relative_frame (deprecated_selected_frame, &count1); |
c906108c SS |
1753 | if (count1 != 0 && count_exp == 0) |
1754 | error ("Initial frame selected; you cannot go up."); | |
0f7d239c | 1755 | select_frame (fi); |
6e7f8b9c | 1756 | selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame)); |
c906108c SS |
1757 | } |
1758 | ||
1759 | static void | |
fba45db2 | 1760 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1761 | { |
c5aa993b | 1762 | up_silently_base (count_exp); |
c906108c SS |
1763 | } |
1764 | ||
1765 | static void | |
fba45db2 | 1766 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1767 | { |
1768 | up_silently_base (count_exp); | |
7789c6f5 EZ |
1769 | print_stack_frame (deprecated_selected_frame, |
1770 | frame_relative_level (deprecated_selected_frame), 1); | |
c906108c SS |
1771 | } |
1772 | ||
1773 | /* Select the frame down one or COUNT stack levels | |
1774 | from the previously selected frame, and print it briefly. */ | |
1775 | ||
c906108c | 1776 | static void |
fba45db2 | 1777 | down_silently_base (char *count_exp) |
c906108c | 1778 | { |
52f0bd74 | 1779 | struct frame_info *frame; |
c906108c SS |
1780 | int count = -1, count1; |
1781 | if (count_exp) | |
bb518678 | 1782 | count = -parse_and_eval_long (count_exp); |
c906108c | 1783 | count1 = count; |
c5aa993b | 1784 | |
6e7f8b9c | 1785 | if (target_has_stack == 0 || deprecated_selected_frame == 0) |
c906108c SS |
1786 | error ("No stack."); |
1787 | ||
6e7f8b9c | 1788 | frame = find_relative_frame (deprecated_selected_frame, &count1); |
c906108c SS |
1789 | if (count1 != 0 && count_exp == 0) |
1790 | { | |
1791 | ||
1792 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1793 | means to really go down (and let me know if that is |
1794 | impossible), but "down 9999" can be used to mean go all the way | |
1795 | down without getting an error. */ | |
c906108c SS |
1796 | |
1797 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1798 | } | |
1799 | ||
0f7d239c | 1800 | select_frame (frame); |
6e7f8b9c | 1801 | selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame)); |
c906108c SS |
1802 | } |
1803 | ||
c906108c | 1804 | static void |
fba45db2 | 1805 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1806 | { |
1807 | down_silently_base (count_exp); | |
c906108c SS |
1808 | } |
1809 | ||
1810 | static void | |
fba45db2 | 1811 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1812 | { |
1813 | down_silently_base (count_exp); | |
7789c6f5 EZ |
1814 | print_stack_frame (deprecated_selected_frame, |
1815 | frame_relative_level (deprecated_selected_frame), 1); | |
c906108c SS |
1816 | } |
1817 | \f | |
8b93c638 | 1818 | void |
fba45db2 | 1819 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1820 | { |
1821 | struct symbol *thisfun; | |
1822 | CORE_ADDR selected_frame_addr; | |
1823 | CORE_ADDR selected_frame_pc; | |
1824 | struct frame_info *frame; | |
3d6d86c6 | 1825 | struct value *return_value = NULL; |
c906108c | 1826 | |
6e7f8b9c | 1827 | if (deprecated_selected_frame == NULL) |
c906108c | 1828 | error ("No selected frame."); |
6e7f8b9c AC |
1829 | thisfun = get_frame_function (deprecated_selected_frame); |
1830 | selected_frame_addr = get_frame_base (deprecated_selected_frame); | |
bdd78e62 | 1831 | selected_frame_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
1832 | |
1833 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1834 | ||
1835 | if (retval_exp) | |
1836 | { | |
1837 | struct type *return_type = NULL; | |
1838 | ||
1839 | return_value = parse_and_eval (retval_exp); | |
1840 | ||
1841 | /* Cast return value to the return type of the function. */ | |
1842 | if (thisfun != NULL) | |
1843 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1844 | if (return_type == NULL) | |
1845 | return_type = builtin_type_int; | |
1846 | return_value = value_cast (return_type, return_value); | |
1847 | ||
1848 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1849 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1850 | if (VALUE_LAZY (return_value)) |
1851 | value_fetch_lazy (return_value); | |
1852 | } | |
1853 | ||
1854 | /* If interactive, require confirmation. */ | |
1855 | ||
1856 | if (from_tty) | |
1857 | { | |
1858 | if (thisfun != 0) | |
1859 | { | |
de5ad195 | 1860 | if (!query ("Make %s return now? ", SYMBOL_PRINT_NAME (thisfun))) |
c906108c SS |
1861 | { |
1862 | error ("Not confirmed."); | |
1863 | /* NOTREACHED */ | |
1864 | } | |
1865 | } | |
c5aa993b JM |
1866 | else if (!query ("Make selected stack frame return now? ")) |
1867 | error ("Not confirmed."); | |
c906108c SS |
1868 | } |
1869 | ||
dbe9fe58 AC |
1870 | /* FIXME: cagney/2003-01-18: Rather than pop each frame in turn, |
1871 | this code should just go straight to the relevant frame and pop | |
1872 | that. */ | |
1873 | ||
c906108c | 1874 | /* Do the real work. Pop until the specified frame is current. We |
749b82f6 AC |
1875 | use this method because the deprecated_selected_frame is not |
1876 | valid after a frame_pop(). The pc comparison makes this work | |
1877 | even if the selected frame shares its fp with another frame. */ | |
1878 | ||
1879 | /* FIXME: cagney/32003-03-12: This code should use frame_id_eq(). | |
1880 | Unfortunatly, that function doesn't yet include the PC in any | |
1881 | frame ID comparison. */ | |
c906108c | 1882 | |
8b36eed8 | 1883 | while (selected_frame_addr != get_frame_base (frame = get_current_frame ()) |
bdd78e62 | 1884 | || selected_frame_pc != get_frame_pc (frame)) |
dbe9fe58 | 1885 | frame_pop (get_current_frame ()); |
c906108c SS |
1886 | |
1887 | /* Then pop that frame. */ | |
1888 | ||
dbe9fe58 | 1889 | frame_pop (get_current_frame ()); |
c906108c SS |
1890 | |
1891 | /* Compute the return value (if any) and store in the place | |
1892 | for return values. */ | |
1893 | ||
1894 | if (retval_exp) | |
1895 | set_return_value (return_value); | |
1896 | ||
1a2aab69 PS |
1897 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1898 | ||
dbe9fe58 AC |
1899 | /* FIXME: cagney/2003-01-18: This is silly. Instead of popping all |
1900 | the frames except the dummy, and then, as an afterthought, | |
1901 | popping the dummy frame, this code should just pop through to the | |
1902 | dummy frame. */ | |
1903 | ||
1a2aab69 | 1904 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), |
c193f6ac | 1905 | get_frame_base (get_current_frame ()))) |
dbe9fe58 | 1906 | frame_pop (get_current_frame ()); |
1a2aab69 | 1907 | |
c906108c SS |
1908 | /* If interactive, print the frame that is now current. */ |
1909 | ||
1910 | if (from_tty) | |
1911 | frame_command ("0", 1); | |
1912 | else | |
1913 | select_frame_command ("0", 0); | |
1914 | } | |
1915 | ||
1916 | /* Sets the scope to input function name, provided that the | |
1917 | function is within the current stack frame */ | |
1918 | ||
1919 | struct function_bounds | |
1920 | { | |
1921 | CORE_ADDR low, high; | |
1922 | }; | |
1923 | ||
a14ed312 | 1924 | static void func_command (char *arg, int from_tty); |
c906108c | 1925 | static void |
fba45db2 | 1926 | func_command (char *arg, int from_tty) |
c906108c SS |
1927 | { |
1928 | struct frame_info *fp; | |
1929 | int found = 0; | |
1930 | struct symtabs_and_lines sals; | |
1931 | int i; | |
1932 | int level = 1; | |
1933 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1934 | ||
1935 | if (arg != (char *) NULL) | |
1936 | return; | |
1937 | ||
1938 | fp = parse_frame_specification ("0"); | |
1939 | sals = decode_line_spec (arg, 1); | |
1940 | func_bounds = (struct function_bounds *) xmalloc ( | |
1941 | sizeof (struct function_bounds) * sals.nelts); | |
1942 | for (i = 0; (i < sals.nelts && !found); i++) | |
1943 | { | |
1944 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1945 | find_pc_partial_function (sals.sals[i].pc, | |
1946 | (char **) NULL, | |
1947 | &func_bounds[i].low, | |
1948 | &func_bounds[i].high) == 0) | |
1949 | { | |
1950 | func_bounds[i].low = | |
1951 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1952 | } | |
1953 | } | |
1954 | ||
1955 | do | |
1956 | { | |
1957 | for (i = 0; (i < sals.nelts && !found); i++) | |
bdd78e62 AC |
1958 | found = (get_frame_pc (fp) >= func_bounds[i].low && |
1959 | get_frame_pc (fp) < func_bounds[i].high); | |
c906108c SS |
1960 | if (!found) |
1961 | { | |
1962 | level = 1; | |
1963 | fp = find_relative_frame (fp, &level); | |
1964 | } | |
1965 | } | |
1966 | while (!found && level == 0); | |
1967 | ||
1968 | if (func_bounds) | |
b8c9b27d | 1969 | xfree (func_bounds); |
c906108c SS |
1970 | |
1971 | if (!found) | |
1972 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
6e7f8b9c | 1973 | else if (fp != deprecated_selected_frame) |
bedfa57b | 1974 | select_and_print_frame (fp); |
c906108c SS |
1975 | } |
1976 | ||
1977 | /* Gets the language of the current frame. */ | |
1978 | ||
1979 | enum language | |
fba45db2 | 1980 | get_frame_language (void) |
c906108c | 1981 | { |
52f0bd74 | 1982 | struct symtab *s; |
c906108c | 1983 | enum language flang; /* The language of the current frame */ |
c5aa993b | 1984 | |
6e7f8b9c | 1985 | if (deprecated_selected_frame) |
c906108c | 1986 | { |
bdd78e62 | 1987 | s = find_pc_symtab (get_frame_pc (deprecated_selected_frame)); |
c906108c SS |
1988 | if (s) |
1989 | flang = s->language; | |
1990 | else | |
1991 | flang = language_unknown; | |
1992 | } | |
1993 | else | |
1994 | flang = language_unknown; | |
1995 | ||
1996 | return flang; | |
1997 | } | |
1998 | \f | |
1999 | void | |
fba45db2 | 2000 | _initialize_stack (void) |
c906108c | 2001 | { |
c5aa993b | 2002 | #if 0 |
c906108c SS |
2003 | backtrace_limit = 30; |
2004 | #endif | |
2005 | ||
2006 | add_com ("return", class_stack, return_command, | |
2007 | "Make selected stack frame return to its caller.\n\ | |
2008 | Control remains in the debugger, but when you continue\n\ | |
2009 | execution will resume in the frame above the one now selected.\n\ | |
2010 | If an argument is given, it is an expression for the value to return."); | |
2011 | ||
2012 | add_com ("up", class_stack, up_command, | |
2013 | "Select and print stack frame that called this one.\n\ | |
2014 | An argument says how many frames up to go."); | |
2015 | add_com ("up-silently", class_support, up_silently_command, | |
2016 | "Same as the `up' command, but does not print anything.\n\ | |
2017 | This is useful in command scripts."); | |
2018 | ||
2019 | add_com ("down", class_stack, down_command, | |
2020 | "Select and print stack frame called by this one.\n\ | |
2021 | An argument says how many frames down to go."); | |
2022 | add_com_alias ("do", "down", class_stack, 1); | |
2023 | add_com_alias ("dow", "down", class_stack, 1); | |
2024 | add_com ("down-silently", class_support, down_silently_command, | |
2025 | "Same as the `down' command, but does not print anything.\n\ | |
2026 | This is useful in command scripts."); | |
2027 | ||
2028 | add_com ("frame", class_stack, frame_command, | |
2029 | "Select and print a stack frame.\n\ | |
2030 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
2031 | An argument specifies the frame to select.\n\ | |
2032 | It can be a stack frame number or the address of the frame.\n\ | |
2033 | With argument, nothing is printed if input is coming from\n\ | |
2034 | a command file or a user-defined command."); | |
2035 | ||
2036 | add_com_alias ("f", "frame", class_stack, 1); | |
2037 | ||
2038 | if (xdb_commands) | |
2039 | { | |
c5aa993b JM |
2040 | add_com ("L", class_stack, current_frame_command, |
2041 | "Print the current stack frame.\n"); | |
c906108c SS |
2042 | add_com_alias ("V", "frame", class_stack, 1); |
2043 | } | |
2044 | add_com ("select-frame", class_stack, select_frame_command, | |
2045 | "Select a stack frame without printing anything.\n\ | |
2046 | An argument specifies the frame to select.\n\ | |
2047 | It can be a stack frame number or the address of the frame.\n"); | |
2048 | ||
2049 | add_com ("backtrace", class_stack, backtrace_command, | |
2050 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
2051 | With a negative argument, print outermost -COUNT frames.\n\ | |
2052 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
2053 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
2054 | if (xdb_commands) | |
2055 | { | |
2056 | add_com_alias ("t", "backtrace", class_stack, 0); | |
2057 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 2058 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
2059 | and the values of the local variables.\n\ |
2060 | With a negative argument, print outermost -COUNT frames.\n\ | |
2061 | Usage: T <count>\n"); | |
2062 | } | |
2063 | ||
2064 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2065 | add_info ("stack", backtrace_command, | |
2066 | "Backtrace of the stack, or innermost COUNT frames."); | |
2067 | add_info_alias ("s", "stack", 1); | |
2068 | add_info ("frame", frame_info, | |
2069 | "All about selected stack frame, or frame at ADDR."); | |
2070 | add_info_alias ("f", "frame", 1); | |
2071 | add_info ("locals", locals_info, | |
2072 | "Local variables of current stack frame."); | |
2073 | add_info ("args", args_info, | |
2074 | "Argument variables of current stack frame."); | |
2075 | if (xdb_commands) | |
c5aa993b JM |
2076 | add_com ("l", class_info, args_plus_locals_info, |
2077 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2078 | |
2079 | if (dbx_commands) | |
c5aa993b JM |
2080 | add_com ("func", class_stack, func_command, |
2081 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2082 | |
2083 | add_info ("catch", catch_info, | |
2084 | "Exceptions that can be caught in the current stack frame."); | |
2085 | ||
2086 | #if 0 | |
c5aa993b JM |
2087 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2088 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2089 | &setlist); |
2090 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2091 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2092 | #endif |
2093 | } |