Commit | Line | Data |
---|---|---|
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, | |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software | |
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" | |
36 | #include "breakpoint.h" | |
37 | #include "demangle.h" | |
38 | #include "inferior.h" | |
39 | #include "annotate.h" | |
8b93c638 | 40 | #include "ui-out.h" |
c906108c SS |
41 | |
42 | /* Prototypes for exported functions. */ | |
43 | ||
a14ed312 | 44 | void args_info (char *, int); |
c906108c | 45 | |
a14ed312 | 46 | void locals_info (char *, int); |
c906108c | 47 | |
507f3c78 | 48 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 49 | |
a14ed312 | 50 | void _initialize_stack (void); |
c906108c SS |
51 | |
52 | /* Prototypes for local functions. */ | |
53 | ||
a14ed312 | 54 | static void return_command (char *, int); |
c906108c | 55 | |
a14ed312 | 56 | static void down_command (char *, int); |
c906108c | 57 | |
a14ed312 | 58 | static void down_silently_base (char *); |
c906108c | 59 | |
a14ed312 | 60 | static void down_silently_command (char *, int); |
c906108c | 61 | |
a14ed312 | 62 | static void up_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void up_silently_base (char *); |
c906108c | 65 | |
a14ed312 | 66 | static void up_silently_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | void frame_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void current_frame_command (char *, int); |
7a292a7a | 71 | |
a14ed312 | 72 | static void select_frame_command (char *, int); |
c906108c | 73 | |
d9fcf2fb | 74 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 75 | |
a14ed312 | 76 | static void catch_info (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void args_plus_locals_info (char *, int); |
c906108c | 79 | |
d9fcf2fb JM |
80 | static void print_frame_label_vars (struct frame_info *, int, |
81 | struct ui_file *); | |
c906108c | 82 | |
d9fcf2fb JM |
83 | static void print_frame_local_vars (struct frame_info *, int, |
84 | struct ui_file *); | |
c906108c | 85 | |
d9fcf2fb JM |
86 | static int print_block_frame_labels (struct block *, int *, |
87 | struct ui_file *); | |
c906108c | 88 | |
d9fcf2fb JM |
89 | static int print_block_frame_locals (struct block *, |
90 | struct frame_info *, | |
91 | int, | |
92 | struct ui_file *); | |
c906108c | 93 | |
c5394b80 JM |
94 | static void print_frame (struct frame_info *fi, |
95 | int level, | |
96 | int source, | |
97 | int args, | |
98 | struct symtab_and_line sal); | |
99 | ||
a14ed312 | 100 | static void print_frame_info_base (struct frame_info *, int, int, int); |
c5aa993b | 101 | |
a14ed312 | 102 | static void print_stack_frame_base (struct frame_info *, int, int); |
c906108c | 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 SS |
111 | extern int lines_to_list; /* # of lines "list" command shows by default */ |
112 | ||
113 | /* The "selected" stack frame is used by default for local and arg access. | |
114 | May be zero, for no selected frame. */ | |
115 | ||
116 | struct frame_info *selected_frame; | |
117 | ||
118 | /* Level of the selected frame: | |
119 | 0 for innermost, 1 for its caller, ... | |
120 | or -1 for frame specified by address with no defined level. */ | |
121 | ||
b31da25e AC |
122 | /* FIXME: cagney/2002-04-21: The variable `selected_frame_level' is |
123 | deprecated. It will dissapear `real soon now'. */ | |
124 | ||
125 | int selected_frame_level; /* DEPRECATED */ | |
126 | ||
127 | /* Level of the selected frame: 0 for innermost, 1 for its caller, ... | |
128 | or -1 for NULL frame. */ | |
129 | ||
130 | int | |
131 | frame_relative_level (struct frame_info *fi) | |
132 | { | |
133 | if (fi == NULL) | |
134 | return -1; | |
135 | else | |
136 | return fi->level; | |
137 | } | |
c906108c SS |
138 | |
139 | /* Zero means do things normally; we are interacting directly with the | |
140 | user. One means print the full filename and linenumber when a | |
141 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
142 | parse. Two means print similar annotations, but in many more | |
143 | cases and in a slightly different syntax. */ | |
144 | ||
145 | int annotation_level = 0; | |
c906108c | 146 | \f |
c5aa993b JM |
147 | |
148 | struct print_stack_frame_args | |
149 | { | |
150 | struct frame_info *fi; | |
151 | int level; | |
152 | int source; | |
153 | int args; | |
154 | }; | |
c906108c | 155 | |
a14ed312 | 156 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
157 | |
158 | /* Show and print the frame arguments. | |
159 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 160 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 161 | static int |
fba45db2 | 162 | show_and_print_stack_frame_stub (void *args) |
c906108c | 163 | { |
c5aa993b | 164 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 165 | |
c906108c SS |
166 | print_frame_info (p->fi, p->level, p->source, p->args); |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | /* Show or print the frame arguments. | |
172 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 173 | static int print_stack_frame_stub (void *args); |
c906108c | 174 | static int |
fba45db2 | 175 | print_stack_frame_stub (void *args) |
c906108c | 176 | { |
c5aa993b | 177 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 178 | |
37767e42 | 179 | print_frame_info_base (p->fi, p->level, p->source, p->args); |
c906108c SS |
180 | return 0; |
181 | } | |
182 | ||
183 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
184 | and LEVEL should be its level in the stack (or -1 for level not | |
185 | defined). */ | |
186 | ||
187 | /* Pass the args the way catch_errors wants them. */ | |
188 | static int | |
fba45db2 | 189 | print_stack_frame_base_stub (char *args) |
c906108c | 190 | { |
c5aa993b | 191 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
192 | |
193 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
194 | return 0; | |
195 | } | |
196 | ||
197 | /* print the frame arguments to the terminal. | |
198 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 199 | static int print_only_stack_frame_stub (void *); |
c906108c | 200 | static int |
fba45db2 | 201 | print_only_stack_frame_stub (void *args) |
c906108c | 202 | { |
c5aa993b | 203 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
204 | |
205 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
206 | return 0; | |
207 | } | |
208 | ||
209 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
210 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
211 | This prints the level, the function executing, the arguments, | |
212 | and the file name and line number. | |
213 | If the pc is not at the beginning of the source line, | |
214 | the actual pc is printed at the beginning. | |
215 | ||
216 | If SOURCE is 1, print the source line as well. | |
217 | If SOURCE is -1, print ONLY the source line. */ | |
218 | ||
219 | static void | |
fba45db2 | 220 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
221 | { |
222 | struct print_stack_frame_args args; | |
223 | ||
224 | args.fi = fi; | |
225 | args.level = level; | |
226 | args.source = source; | |
227 | args.args = 1; | |
228 | ||
7a292a7a | 229 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
230 | } |
231 | ||
232 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
233 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
234 | This prints the level, the function executing, the arguments, | |
235 | and the file name and line number. | |
236 | If the pc is not at the beginning of the source line, | |
237 | the actual pc is printed at the beginning. | |
238 | ||
239 | If SOURCE is 1, print the source line as well. | |
240 | If SOURCE is -1, print ONLY the source line. */ | |
241 | ||
242 | void | |
fba45db2 | 243 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
244 | { |
245 | struct print_stack_frame_args args; | |
246 | ||
247 | args.fi = fi; | |
248 | args.level = level; | |
249 | args.source = source; | |
250 | args.args = 1; | |
251 | ||
7a292a7a | 252 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
253 | } |
254 | ||
255 | ||
256 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
257 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
258 | This prints the level, the function executing, the arguments, | |
259 | and the file name and line number. | |
260 | If the pc is not at the beginning of the source line, | |
261 | the actual pc is printed at the beginning. | |
262 | ||
263 | If SOURCE is 1, print the source line as well. | |
264 | If SOURCE is -1, print ONLY the source line. */ | |
265 | ||
266 | void | |
fba45db2 | 267 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
268 | { |
269 | struct print_stack_frame_args args; | |
270 | ||
271 | args.fi = fi; | |
272 | args.level = level; | |
273 | args.source = source; | |
274 | args.args = 1; | |
275 | ||
c5aa993b | 276 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
277 | } |
278 | ||
279 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
280 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
281 | This prints the level, the function executing, the arguments, | |
282 | and the file name and line number. | |
283 | If the pc is not at the beginning of the source line, | |
284 | the actual pc is printed at the beginning. | |
285 | ||
286 | If SOURCE is 1, print the source line as well. | |
287 | If SOURCE is -1, print ONLY the source line. */ | |
288 | ||
289 | void | |
fba45db2 | 290 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
291 | { |
292 | struct print_stack_frame_args args; | |
293 | ||
294 | args.fi = fi; | |
295 | args.level = level; | |
296 | args.source = source; | |
297 | args.args = 1; | |
298 | ||
7a292a7a | 299 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
300 | } |
301 | ||
c5aa993b JM |
302 | struct print_args_args |
303 | { | |
c906108c SS |
304 | struct symbol *func; |
305 | struct frame_info *fi; | |
d9fcf2fb | 306 | struct ui_file *stream; |
c906108c SS |
307 | }; |
308 | ||
a14ed312 | 309 | static int print_args_stub (PTR); |
c906108c SS |
310 | |
311 | /* Pass the args the way catch_errors wants them. */ | |
312 | ||
313 | static int | |
fba45db2 | 314 | print_args_stub (PTR args) |
c906108c SS |
315 | { |
316 | int numargs; | |
c5aa993b | 317 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 318 | |
392a587b | 319 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 320 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
321 | return 0; |
322 | } | |
323 | ||
324 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
325 | Used in "where" output, also used to emit breakpoint or step |
326 | messages. | |
327 | LEVEL is the level of the frame, or -1 if it is the | |
328 | innermost frame but we don't want to print the level. | |
329 | The meaning of the SOURCE argument is: | |
330 | SRC_LINE: Print only source line | |
331 | LOCATION: Print only location | |
332 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
333 | |
334 | static void | |
fba45db2 | 335 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
336 | { |
337 | struct symtab_and_line sal; | |
c5394b80 JM |
338 | int source_print; |
339 | int location_print; | |
c906108c SS |
340 | |
341 | #if 0 | |
342 | char buf[MAX_REGISTER_RAW_SIZE]; | |
343 | CORE_ADDR sp; | |
344 | ||
345 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
346 | ||
347 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
348 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
349 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
350 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
351 | ||
352 | /* This is not a perfect test, because if a function alloca's some | |
353 | memory, puts some code there, and then jumps into it, then the test | |
354 | will succeed even though there is no call dummy. Probably best is | |
355 | to check for a bp_call_dummy breakpoint. */ | |
356 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
357 | #else | |
358 | if (frame_in_dummy (fi)) | |
359 | #endif | |
360 | { | |
361 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
362 | ||
363 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 364 | to list for this frame. */ |
c906108c SS |
365 | if (level >= 0) |
366 | printf_filtered ("#%-2d ", level); | |
367 | annotate_function_call (); | |
368 | printf_filtered ("<function called from gdb>\n"); | |
369 | annotate_frame_end (); | |
370 | return; | |
371 | } | |
372 | if (fi->signal_handler_caller) | |
373 | { | |
374 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
375 | ||
376 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 377 | to list for this frame. */ |
c906108c SS |
378 | if (level >= 0) |
379 | printf_filtered ("#%-2d ", level); | |
380 | annotate_signal_handler_caller (); | |
381 | printf_filtered ("<signal handler called>\n"); | |
382 | annotate_frame_end (); | |
383 | return; | |
384 | } | |
385 | ||
386 | /* If fi is not the innermost frame, that normally means that fi->pc | |
387 | points to *after* the call instruction, and we want to get the line | |
388 | containing the call, never the next line. But if the next frame is | |
389 | a signal_handler_caller or a dummy frame, then the next frame was | |
390 | not entered as the result of a call, and we want to get the line | |
391 | containing fi->pc. */ | |
392 | sal = | |
393 | find_pc_line (fi->pc, | |
394 | fi->next != NULL | |
395 | && !fi->next->signal_handler_caller | |
396 | && !frame_in_dummy (fi->next)); | |
397 | ||
c5394b80 JM |
398 | location_print = (source == LOCATION |
399 | || source == LOC_AND_ADDRESS | |
400 | || source == SRC_AND_LOC); | |
401 | ||
402 | if (location_print || !sal.symtab) | |
403 | print_frame (fi, level, source, args, sal); | |
404 | ||
405 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
406 | ||
407 | if (source_print && sal.symtab) | |
408 | { | |
409 | int done = 0; | |
410 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
411 | ||
412 | if (annotation_level) | |
413 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
414 | fi->pc); | |
415 | if (!done) | |
416 | { | |
ba4bbdcb | 417 | if (print_frame_info_listing_hook) |
76e42a4f MH |
418 | { |
419 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
420 | current_source_symtab = sal.symtab; | |
421 | } | |
ba4bbdcb | 422 | else |
c5394b80 | 423 | { |
ba4bbdcb KS |
424 | /* We used to do this earlier, but that is clearly |
425 | wrong. This function is used by many different | |
426 | parts of gdb, including normal_stop in infrun.c, | |
427 | which uses this to print out the current PC | |
428 | when we stepi/nexti into the middle of a source | |
429 | line. Only the command line really wants this | |
430 | behavior. Other UIs probably would like the | |
431 | ability to decide for themselves if it is desired. */ | |
432 | if (addressprint && mid_statement) | |
433 | { | |
ba4bbdcb KS |
434 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
435 | ui_out_text (uiout, "\t"); | |
ba4bbdcb KS |
436 | } |
437 | ||
438 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 439 | } |
c5394b80 JM |
440 | } |
441 | current_source_line = max (sal.line - lines_to_list / 2, 1); | |
442 | } | |
443 | ||
444 | if (source != 0) | |
445 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
446 | ||
447 | annotate_frame_end (); | |
448 | ||
449 | gdb_flush (gdb_stdout); | |
450 | } | |
451 | ||
452 | static void | |
453 | print_frame (struct frame_info *fi, | |
454 | int level, | |
455 | int source, | |
456 | int args, | |
457 | struct symtab_and_line sal) | |
458 | { | |
459 | struct symbol *func; | |
460 | register char *funname = 0; | |
461 | enum language funlang = language_unknown; | |
8b93c638 JM |
462 | struct ui_stream *stb; |
463 | struct cleanup *old_chain; | |
e6e0bfab | 464 | struct cleanup *list_chain; |
8b93c638 JM |
465 | |
466 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 467 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c5394b80 | 468 | |
c906108c SS |
469 | func = find_pc_function (fi->pc); |
470 | if (func) | |
471 | { | |
472 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
473 | function (when we are in the first function in a file which |
474 | is compiled without debugging symbols, the previous function | |
475 | is compiled with debugging symbols, and the "foo.o" symbol | |
476 | that is supposed to tell us where the file with debugging symbols | |
477 | ends has been truncated by ar because it is longer than 15 | |
478 | characters). This also occurs if the user uses asm() to create | |
479 | a function but not stabs for it (in a file compiled -g). | |
480 | ||
481 | So look in the minimal symbol tables as well, and if it comes | |
482 | up with a larger address for the function use that instead. | |
483 | I don't think this can ever cause any problems; there shouldn't | |
484 | be any minimal symbols in the middle of a function; if this is | |
485 | ever changed many parts of GDB will need to be changed (and we'll | |
486 | create a find_pc_minimal_function or some such). */ | |
c906108c SS |
487 | |
488 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
489 | if (msymbol != NULL | |
c5aa993b | 490 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
491 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
492 | { | |
493 | #if 0 | |
494 | /* There is no particular reason to think the line number | |
495 | information is wrong. Someone might have just put in | |
496 | a label with asm() but left the line numbers alone. */ | |
497 | /* In this case we have no way of knowing the source file | |
498 | and line number, so don't print them. */ | |
499 | sal.symtab = 0; | |
500 | #endif | |
501 | /* We also don't know anything about the function besides | |
502 | its address and name. */ | |
503 | func = 0; | |
504 | funname = SYMBOL_NAME (msymbol); | |
505 | funlang = SYMBOL_LANGUAGE (msymbol); | |
506 | } | |
507 | else | |
508 | { | |
c5394b80 JM |
509 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
510 | demangled name that we already have stored in the symbol | |
511 | table, but we stored a version with DMGL_PARAMS turned | |
512 | on, and here we don't want to display parameters. So call | |
513 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
514 | that printf_symbol_filtered() will again try to demangle | |
515 | the name on the fly, but the issue is that if | |
516 | cplus_demangle() fails here, it'll fail there too. So we | |
517 | want to catch the failure ("demangled==NULL" case below) | |
518 | here, while we still have our hands on the function | |
519 | symbol.) */ | |
c5aa993b | 520 | char *demangled; |
c906108c SS |
521 | funname = SYMBOL_NAME (func); |
522 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
523 | if (funlang == language_cplus) |
524 | { | |
525 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
526 | if (demangled == NULL) | |
c5394b80 JM |
527 | /* If the demangler fails, try the demangled name from |
528 | the symbol table. This'll have parameters, but | |
529 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
530 | funname = SYMBOL_SOURCE_NAME (func); |
531 | } | |
c906108c SS |
532 | } |
533 | } | |
534 | else | |
535 | { | |
536 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
537 | if (msymbol != NULL) | |
538 | { | |
539 | funname = SYMBOL_NAME (msymbol); | |
540 | funlang = SYMBOL_LANGUAGE (msymbol); | |
541 | } | |
542 | } | |
543 | ||
c5394b80 JM |
544 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
545 | ||
666547aa | 546 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 JM |
547 | |
548 | if (level >= 0) | |
8b93c638 | 549 | { |
8b93c638 JM |
550 | ui_out_text (uiout, "#"); |
551 | ui_out_field_fmt (uiout, "level", "%-2d", level); | |
552 | ui_out_spaces (uiout, 1); | |
8b93c638 | 553 | } |
c5394b80 JM |
554 | if (addressprint) |
555 | if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS) | |
556 | { | |
557 | annotate_frame_address (); | |
8b93c638 JM |
558 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
559 | annotate_frame_address_end (); | |
560 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
561 | } |
562 | annotate_frame_function_name (); | |
8b93c638 JM |
563 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, |
564 | DMGL_ANSI); | |
565 | ui_out_field_stream (uiout, "func", stb); | |
566 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
567 | annotate_frame_args (); |
568 | ||
8b93c638 | 569 | ui_out_text (uiout, " ("); |
c5394b80 | 570 | if (args) |
c906108c | 571 | { |
c5394b80 | 572 | struct print_args_args args; |
d493eb33 | 573 | struct cleanup *args_list_chain; |
c5394b80 JM |
574 | args.fi = fi; |
575 | args.func = func; | |
576 | args.stream = gdb_stdout; | |
68c81b54 | 577 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 578 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
579 | /* FIXME: args must be a list. If one argument is a string it will |
580 | have " that will not be properly escaped. */ | |
666547aa | 581 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 582 | do_cleanups (args_list_chain); |
c5394b80 JM |
583 | QUIT; |
584 | } | |
8b93c638 | 585 | ui_out_text (uiout, ")"); |
c5394b80 JM |
586 | if (sal.symtab && sal.symtab->filename) |
587 | { | |
588 | annotate_frame_source_begin (); | |
8b93c638 JM |
589 | ui_out_wrap_hint (uiout, " "); |
590 | ui_out_text (uiout, " at "); | |
591 | annotate_frame_source_file (); | |
592 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
593 | annotate_frame_source_file_end (); | |
594 | ui_out_text (uiout, ":"); | |
595 | annotate_frame_source_line (); | |
596 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
597 | annotate_frame_source_end (); |
598 | } | |
c906108c | 599 | |
c5394b80 JM |
600 | #ifdef PC_SOLIB |
601 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 602 | { |
c5394b80 JM |
603 | char *lib = PC_SOLIB (fi->pc); |
604 | if (lib) | |
c906108c | 605 | { |
c5394b80 | 606 | annotate_frame_where (); |
8b93c638 JM |
607 | ui_out_wrap_hint (uiout, " "); |
608 | ui_out_text (uiout, " from "); | |
609 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 610 | } |
c906108c | 611 | } |
c5394b80 | 612 | #endif /* PC_SOLIB */ |
e514a9d6 | 613 | |
666547aa | 614 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 615 | do_cleanups (list_chain); |
8b93c638 JM |
616 | ui_out_text (uiout, "\n"); |
617 | do_cleanups (old_chain); | |
c906108c SS |
618 | } |
619 | \f | |
620 | ||
c906108c SS |
621 | /* Show or print the frame info. If this is the tui, it will be shown in |
622 | the source display */ | |
623 | void | |
fba45db2 KB |
624 | print_frame_info (struct frame_info *fi, register int level, int source, |
625 | int args) | |
c906108c | 626 | { |
37767e42 | 627 | print_frame_info_base (fi, level, source, args); |
c906108c SS |
628 | } |
629 | ||
630 | /* Show the frame info. If this is the tui, it will be shown in | |
631 | the source display otherwise, nothing is done */ | |
632 | void | |
fba45db2 | 633 | show_stack_frame (struct frame_info *fi) |
c906108c | 634 | { |
c906108c | 635 | } |
c906108c | 636 | \f |
c5aa993b | 637 | |
c906108c SS |
638 | /* Read a frame specification in whatever the appropriate format is. |
639 | Call error() if the specification is in any way invalid (i.e. | |
640 | this function never returns NULL). */ | |
641 | ||
642 | struct frame_info * | |
fba45db2 | 643 | parse_frame_specification (char *frame_exp) |
c906108c SS |
644 | { |
645 | int numargs = 0; | |
646 | #define MAXARGS 4 | |
647 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 648 | int level; |
c5aa993b | 649 | |
c906108c SS |
650 | if (frame_exp) |
651 | { | |
652 | char *addr_string, *p; | |
653 | struct cleanup *tmp_cleanup; | |
654 | ||
c5aa993b JM |
655 | while (*frame_exp == ' ') |
656 | frame_exp++; | |
c906108c SS |
657 | |
658 | while (*frame_exp) | |
659 | { | |
660 | if (numargs > MAXARGS) | |
661 | error ("Too many args in frame specification"); | |
662 | /* Parse an argument. */ | |
c5aa993b | 663 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 664 | ; |
c5aa993b | 665 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
666 | |
667 | { | |
3d6d86c6 | 668 | struct value *vp; |
ec9a3449 | 669 | |
b8c9b27d | 670 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 671 | |
24285e3a | 672 | /* NOTE: we call parse_and_eval and then both |
1aa20aa8 | 673 | value_as_long and value_as_address rather than calling |
24285e3a DT |
674 | parse_and_eval_long and parse_and_eval_address because |
675 | of the issue of potential side effects from evaluating | |
676 | the expression. */ | |
ec9a3449 DT |
677 | vp = parse_and_eval (addr_string); |
678 | if (numargs == 0) | |
679 | level = value_as_long (vp); | |
680 | ||
1aa20aa8 | 681 | args[numargs++] = value_as_address (vp); |
c906108c SS |
682 | do_cleanups (tmp_cleanup); |
683 | } | |
684 | ||
685 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
686 | while (*p == ' ') |
687 | p++; | |
c906108c SS |
688 | frame_exp = p; |
689 | } | |
690 | } | |
691 | ||
692 | switch (numargs) | |
693 | { | |
694 | case 0: | |
695 | if (selected_frame == NULL) | |
696 | error ("No selected frame."); | |
697 | return selected_frame; | |
698 | /* NOTREACHED */ | |
699 | case 1: | |
700 | { | |
c906108c | 701 | struct frame_info *fid = |
c5aa993b | 702 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
703 | struct frame_info *tfid; |
704 | ||
705 | if (level == 0) | |
706 | /* find_relative_frame was successful */ | |
707 | return fid; | |
708 | ||
709 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
710 | take at least 2 addresses. It is important to detect this case | |
711 | here so that "frame 100" does not give a confusing error message | |
712 | like "frame specification requires two addresses". This of course | |
713 | does not solve the "frame 100" problem for machines on which | |
714 | a frame specification can be made with one address. To solve | |
715 | that, we need a new syntax for a specifying a frame by address. | |
716 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
717 | two args, etc.), but people might think that is too much typing, | |
718 | so I guess *0x23,0x45 would be a possible alternative (commas | |
719 | really should be used instead of spaces to delimit; using spaces | |
720 | normally works in an expression). */ | |
721 | #ifdef SETUP_ARBITRARY_FRAME | |
823ca731 | 722 | error ("No frame %s", paddr_d (args[0])); |
c906108c SS |
723 | #endif |
724 | ||
725 | /* If (s)he specifies the frame with an address, he deserves what | |
726 | (s)he gets. Still, give the highest one that matches. */ | |
727 | ||
728 | for (fid = get_current_frame (); | |
729 | fid && fid->frame != args[0]; | |
730 | fid = get_prev_frame (fid)) | |
731 | ; | |
732 | ||
733 | if (fid) | |
734 | while ((tfid = get_prev_frame (fid)) && | |
735 | (tfid->frame == args[0])) | |
736 | fid = tfid; | |
c5aa993b | 737 | |
c906108c SS |
738 | /* We couldn't identify the frame as an existing frame, but |
739 | perhaps we can create one with a single argument. */ | |
740 | } | |
741 | ||
c5aa993b | 742 | default: |
c906108c SS |
743 | #ifdef SETUP_ARBITRARY_FRAME |
744 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
745 | #else | |
746 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 747 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
748 | if (numargs == 1) |
749 | return create_new_frame (args[0], 0); | |
750 | error ("Too many args in frame specification"); | |
751 | #endif | |
752 | /* NOTREACHED */ | |
753 | } | |
754 | /* NOTREACHED */ | |
755 | } | |
756 | ||
757 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
758 | that if it is unsure about the answer, it returns 0 | |
759 | instead of guessing (this happens on the VAX and i960, for example). | |
760 | ||
761 | On most machines, we never have to guess about the args address, | |
762 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
763 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
764 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
765 | #endif | |
766 | ||
767 | /* Print verbosely the selected frame or the frame at address ADDR. | |
768 | This means absolutely all information in the frame is printed. */ | |
769 | ||
770 | static void | |
fba45db2 | 771 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
772 | { |
773 | struct frame_info *fi; | |
774 | struct symtab_and_line sal; | |
775 | struct symbol *func; | |
776 | struct symtab *s; | |
777 | struct frame_info *calling_frame_info; | |
778 | int i, count, numregs; | |
779 | char *funname = 0; | |
780 | enum language funlang = language_unknown; | |
781 | ||
782 | if (!target_has_stack) | |
783 | error ("No stack."); | |
784 | ||
785 | fi = parse_frame_specification (addr_exp); | |
786 | if (fi == NULL) | |
787 | error ("Invalid frame specified."); | |
788 | ||
789 | sal = find_pc_line (fi->pc, | |
790 | fi->next != NULL | |
791 | && !fi->next->signal_handler_caller | |
792 | && !frame_in_dummy (fi->next)); | |
793 | func = get_frame_function (fi); | |
c5aa993b | 794 | s = find_pc_symtab (fi->pc); |
c906108c SS |
795 | if (func) |
796 | { | |
797 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
798 | * the demangled name that we already have stored in | |
799 | * the symbol table, but we stored a version with | |
800 | * DMGL_PARAMS turned on, and here we don't want | |
801 | * to display parameters. So call the demangler again, | |
802 | * with DMGL_ANSI only. RT | |
803 | * (Yes, I know that printf_symbol_filtered() will | |
804 | * again try to demangle the name on the fly, but | |
805 | * the issue is that if cplus_demangle() fails here, | |
806 | * it'll fail there too. So we want to catch the failure | |
807 | * ("demangled==NULL" case below) here, while we still | |
808 | * have our hands on the function symbol.) | |
809 | */ | |
c5aa993b JM |
810 | char *demangled; |
811 | funname = SYMBOL_NAME (func); | |
812 | funlang = SYMBOL_LANGUAGE (func); | |
813 | if (funlang == language_cplus) | |
814 | { | |
815 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
816 | /* If the demangler fails, try the demangled name | |
817 | * from the symbol table. This'll have parameters, | |
818 | * but that's preferable to diplaying a mangled name. | |
819 | */ | |
820 | if (demangled == NULL) | |
821 | funname = SYMBOL_SOURCE_NAME (func); | |
822 | } | |
c906108c SS |
823 | } |
824 | else | |
825 | { | |
826 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
827 | if (msymbol != NULL) | |
828 | { | |
829 | funname = SYMBOL_NAME (msymbol); | |
830 | funlang = SYMBOL_LANGUAGE (msymbol); | |
831 | } | |
832 | } | |
833 | calling_frame_info = get_prev_frame (fi); | |
834 | ||
b31da25e | 835 | if (!addr_exp && frame_relative_level (selected_frame) >= 0) |
c906108c | 836 | { |
b31da25e AC |
837 | printf_filtered ("Stack level %d, frame at ", |
838 | frame_relative_level (selected_frame)); | |
c906108c SS |
839 | print_address_numeric (fi->frame, 1, gdb_stdout); |
840 | printf_filtered (":\n"); | |
841 | } | |
842 | else | |
843 | { | |
844 | printf_filtered ("Stack frame at "); | |
845 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
846 | printf_filtered (":\n"); | |
847 | } | |
848 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
849 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
850 | ||
851 | wrap_here (" "); | |
852 | if (funname) | |
853 | { | |
854 | printf_filtered (" in "); | |
855 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
856 | DMGL_ANSI | DMGL_PARAMS); | |
857 | } | |
858 | wrap_here (" "); | |
859 | if (sal.symtab) | |
860 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
861 | puts_filtered ("; "); | |
862 | wrap_here (" "); | |
863 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
864 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
865 | printf_filtered ("\n"); | |
866 | ||
867 | { | |
392a587b JM |
868 | int frameless; |
869 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
870 | if (frameless) |
871 | printf_filtered (" (FRAMELESS),"); | |
872 | } | |
873 | ||
874 | if (calling_frame_info) | |
875 | { | |
876 | printf_filtered (" called by frame at "); | |
877 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
878 | } | |
879 | if (fi->next && calling_frame_info) | |
880 | puts_filtered (","); | |
881 | wrap_here (" "); | |
882 | if (fi->next) | |
883 | { | |
884 | printf_filtered (" caller of frame at "); | |
885 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
886 | } | |
887 | if (fi->next || calling_frame_info) | |
888 | puts_filtered ("\n"); | |
889 | if (s) | |
890 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
891 | ||
892 | #ifdef PRINT_EXTRA_FRAME_INFO | |
893 | PRINT_EXTRA_FRAME_INFO (fi); | |
894 | #endif | |
895 | ||
896 | { | |
897 | /* Address of the argument list for this frame, or 0. */ | |
898 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
899 | /* Number of args for this frame, or -1 if unknown. */ | |
900 | int numargs; | |
901 | ||
902 | if (arg_list == 0) | |
903 | printf_filtered (" Arglist at unknown address.\n"); | |
904 | else | |
905 | { | |
906 | printf_filtered (" Arglist at "); | |
907 | print_address_numeric (arg_list, 1, gdb_stdout); | |
908 | printf_filtered (","); | |
909 | ||
392a587b | 910 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
911 | if (numargs < 0) |
912 | puts_filtered (" args: "); | |
913 | else if (numargs == 0) | |
914 | puts_filtered (" no args."); | |
915 | else if (numargs == 1) | |
916 | puts_filtered (" 1 arg: "); | |
917 | else | |
918 | printf_filtered (" %d args: ", numargs); | |
919 | print_frame_args (func, fi, numargs, gdb_stdout); | |
920 | puts_filtered ("\n"); | |
921 | } | |
922 | } | |
923 | { | |
924 | /* Address of the local variables for this frame, or 0. */ | |
925 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
926 | ||
927 | if (arg_list == 0) | |
928 | printf_filtered (" Locals at unknown address,"); | |
929 | else | |
930 | { | |
931 | printf_filtered (" Locals at "); | |
932 | print_address_numeric (arg_list, 1, gdb_stdout); | |
933 | printf_filtered (","); | |
934 | } | |
935 | } | |
936 | ||
937 | FRAME_INIT_SAVED_REGS (fi); | |
938 | if (fi->saved_regs != NULL) | |
939 | { | |
940 | /* The sp is special; what's returned isn't the save address, but | |
c5aa993b | 941 | actually the value of the previous frame's sp. */ |
c906108c SS |
942 | printf_filtered (" Previous frame's sp is "); |
943 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
944 | printf_filtered ("\n"); | |
945 | count = 0; | |
64485362 | 946 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
947 | for (i = 0; i < numregs; i++) |
948 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
949 | { | |
950 | if (count == 0) | |
951 | puts_filtered (" Saved registers:\n "); | |
952 | else | |
953 | puts_filtered (","); | |
954 | wrap_here (" "); | |
955 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
956 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
957 | count++; | |
958 | } | |
959 | if (count) | |
960 | puts_filtered ("\n"); | |
961 | } | |
962 | else | |
963 | { | |
964 | /* We could get some information about saved registers by | |
c5aa993b JM |
965 | calling get_saved_register on each register. Which info goes |
966 | with which frame is necessarily lost, however, and I suspect | |
967 | that the users don't care whether they get the info. */ | |
c906108c SS |
968 | puts_filtered ("\n"); |
969 | } | |
970 | } | |
971 | ||
972 | #if 0 | |
973 | /* Set a limit on the number of frames printed by default in a | |
974 | backtrace. */ | |
975 | ||
976 | static int backtrace_limit; | |
977 | ||
978 | static void | |
fba45db2 | 979 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 980 | { |
bb518678 | 981 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
982 | |
983 | if (count < 0) | |
984 | error ("Negative argument not meaningful as backtrace limit."); | |
985 | ||
986 | backtrace_limit = count; | |
987 | } | |
988 | ||
989 | static void | |
fba45db2 | 990 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
991 | { |
992 | if (arg) | |
993 | error ("\"Info backtrace-limit\" takes no arguments."); | |
994 | ||
995 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
996 | } | |
997 | #endif | |
998 | ||
999 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1000 | ||
a14ed312 KB |
1001 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1002 | int from_tty); | |
c906108c | 1003 | static void |
fba45db2 | 1004 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1005 | { |
1006 | struct frame_info *fi; | |
1007 | register int count; | |
1008 | register int i; | |
1009 | register struct frame_info *trailing; | |
1010 | register int trailing_level; | |
1011 | ||
1012 | if (!target_has_stack) | |
1013 | error ("No stack."); | |
1014 | ||
1015 | /* The following code must do two things. First, it must | |
1016 | set the variable TRAILING to the frame from which we should start | |
1017 | printing. Second, it must set the variable count to the number | |
1018 | of frames which we should print, or -1 if all of them. */ | |
1019 | trailing = get_current_frame (); | |
d082b2bb AC |
1020 | |
1021 | /* The target can be in a state where there is no valid frames | |
1022 | (e.g., just connected). */ | |
1023 | if (trailing == NULL) | |
1024 | error ("No stack."); | |
1025 | ||
c906108c SS |
1026 | trailing_level = 0; |
1027 | if (count_exp) | |
1028 | { | |
bb518678 | 1029 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1030 | if (count < 0) |
1031 | { | |
1032 | struct frame_info *current; | |
1033 | ||
1034 | count = -count; | |
1035 | ||
1036 | current = trailing; | |
1037 | while (current && count--) | |
1038 | { | |
1039 | QUIT; | |
1040 | current = get_prev_frame (current); | |
1041 | } | |
c5aa993b | 1042 | |
c906108c SS |
1043 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1044 | will be COUNT below it. */ | |
1045 | while (current) | |
1046 | { | |
1047 | QUIT; | |
1048 | trailing = get_prev_frame (trailing); | |
1049 | current = get_prev_frame (current); | |
1050 | trailing_level++; | |
1051 | } | |
c5aa993b | 1052 | |
c906108c SS |
1053 | count = -1; |
1054 | } | |
1055 | } | |
1056 | else | |
1057 | count = -1; | |
1058 | ||
1059 | if (info_verbose) | |
1060 | { | |
1061 | struct partial_symtab *ps; | |
c5aa993b | 1062 | |
c906108c | 1063 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1064 | a separate pass so that "Reading in symbols for xxx" messages |
1065 | don't screw up the appearance of the backtrace. Also | |
1066 | if people have strong opinions against reading symbols for | |
1067 | backtrace this may have to be an option. */ | |
c906108c SS |
1068 | i = count; |
1069 | for (fi = trailing; | |
1070 | fi != NULL && i--; | |
1071 | fi = get_prev_frame (fi)) | |
1072 | { | |
1073 | QUIT; | |
1074 | ps = find_pc_psymtab (fi->pc); | |
1075 | if (ps) | |
1076 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | for (i = 0, fi = trailing; | |
1081 | fi && count--; | |
1082 | i++, fi = get_prev_frame (fi)) | |
1083 | { | |
1084 | QUIT; | |
1085 | ||
1086 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1087 | means further attempts to backtrace would fail (on the other |
1088 | hand, perhaps the code does or could be fixed to make sure | |
1089 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1090 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1091 | if (show_locals) | |
c5aa993b | 1092 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1093 | } |
1094 | ||
1095 | /* If we've stopped before the end, mention that. */ | |
1096 | if (fi && from_tty) | |
1097 | printf_filtered ("(More stack frames follow...)\n"); | |
1098 | } | |
1099 | ||
1100 | static void | |
fba45db2 | 1101 | backtrace_command (char *arg, int from_tty) |
c906108c | 1102 | { |
c5aa993b JM |
1103 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1104 | char **argv = (char **) NULL; | |
1105 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1106 | char *argPtr = arg; | |
c906108c | 1107 | |
c5aa993b | 1108 | if (arg != (char *) NULL) |
c906108c SS |
1109 | { |
1110 | int i; | |
1111 | ||
c5aa993b | 1112 | argv = buildargv (arg); |
7a292a7a | 1113 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1114 | argc = 0; |
c5aa993b JM |
1115 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1116 | { | |
745b8ca0 | 1117 | unsigned int j; |
c5aa993b JM |
1118 | |
1119 | for (j = 0; (j < strlen (argv[i])); j++) | |
1120 | argv[i][j] = tolower (argv[i][j]); | |
1121 | ||
1122 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1123 | argIndicatingFullTrace = argc; | |
1124 | else | |
1125 | { | |
1126 | argc++; | |
1127 | totArgLen += strlen (argv[i]); | |
1128 | } | |
1129 | } | |
c906108c SS |
1130 | totArgLen += argc; |
1131 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1132 | { |
1133 | if (totArgLen > 0) | |
1134 | { | |
1135 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1136 | if (!argPtr) | |
1137 | nomem (0); | |
1138 | else | |
1139 | { | |
1140 | memset (argPtr, 0, totArgLen + 1); | |
1141 | for (i = 0; (i < (argc + 1)); i++) | |
1142 | { | |
1143 | if (i != argIndicatingFullTrace) | |
1144 | { | |
1145 | strcat (argPtr, argv[i]); | |
1146 | strcat (argPtr, " "); | |
1147 | } | |
1148 | } | |
1149 | } | |
1150 | } | |
1151 | else | |
1152 | argPtr = (char *) NULL; | |
1153 | } | |
c906108c SS |
1154 | } |
1155 | ||
1156 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1157 | ||
1158 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1159 | xfree (argPtr); |
c906108c SS |
1160 | |
1161 | if (old_chain) | |
c5aa993b | 1162 | do_cleanups (old_chain); |
c906108c SS |
1163 | } |
1164 | ||
a14ed312 | 1165 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1166 | static void |
fba45db2 | 1167 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1168 | { |
1169 | backtrace_command_1 (arg, 1, from_tty); | |
1170 | } | |
c906108c | 1171 | \f |
c5aa993b | 1172 | |
c906108c SS |
1173 | /* Print the local variables of a block B active in FRAME. |
1174 | Return 1 if any variables were printed; 0 otherwise. */ | |
1175 | ||
1176 | static int | |
fba45db2 KB |
1177 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1178 | int num_tabs, register struct ui_file *stream) | |
c906108c | 1179 | { |
c906108c SS |
1180 | register int i, j; |
1181 | register struct symbol *sym; | |
1182 | register int values_printed = 0; | |
1183 | ||
e88c90f2 | 1184 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1185 | { |
c906108c SS |
1186 | switch (SYMBOL_CLASS (sym)) |
1187 | { | |
1188 | case LOC_LOCAL: | |
1189 | case LOC_REGISTER: | |
1190 | case LOC_STATIC: | |
1191 | case LOC_BASEREG: | |
1192 | values_printed = 1; | |
1193 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1194 | fputs_filtered ("\t", stream); |
c906108c SS |
1195 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1196 | fputs_filtered (" = ", stream); | |
1197 | print_variable_value (sym, fi, stream); | |
1198 | fprintf_filtered (stream, "\n"); | |
1199 | break; | |
1200 | ||
1201 | default: | |
1202 | /* Ignore symbols which are not locals. */ | |
1203 | break; | |
1204 | } | |
1205 | } | |
1206 | return values_printed; | |
1207 | } | |
1208 | ||
1209 | /* Same, but print labels. */ | |
1210 | ||
1211 | static int | |
fba45db2 KB |
1212 | print_block_frame_labels (struct block *b, int *have_default, |
1213 | register struct ui_file *stream) | |
c906108c | 1214 | { |
c906108c SS |
1215 | register int i; |
1216 | register struct symbol *sym; | |
1217 | register int values_printed = 0; | |
1218 | ||
e88c90f2 | 1219 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1220 | { |
c906108c SS |
1221 | if (STREQ (SYMBOL_NAME (sym), "default")) |
1222 | { | |
1223 | if (*have_default) | |
1224 | continue; | |
1225 | *have_default = 1; | |
1226 | } | |
1227 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1228 | { | |
1229 | struct symtab_and_line sal; | |
1230 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1231 | values_printed = 1; | |
1232 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1233 | if (addressprint) | |
1234 | { | |
1235 | fprintf_filtered (stream, " "); | |
1236 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1237 | } | |
1238 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1239 | sal.symtab->filename, sal.line); | |
1240 | } | |
1241 | } | |
1242 | return values_printed; | |
1243 | } | |
1244 | ||
1245 | /* Print on STREAM all the local variables in frame FRAME, | |
1246 | including all the blocks active in that frame | |
1247 | at its current pc. | |
1248 | ||
1249 | Returns 1 if the job was done, | |
1250 | or 0 if nothing was printed because we have no info | |
1251 | on the function running in FRAME. */ | |
1252 | ||
1253 | static void | |
fba45db2 KB |
1254 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1255 | register struct ui_file *stream) | |
c906108c | 1256 | { |
ae767bfb | 1257 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1258 | register int values_printed = 0; |
1259 | ||
1260 | if (block == 0) | |
1261 | { | |
1262 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1263 | return; | |
1264 | } | |
c5aa993b | 1265 | |
c906108c SS |
1266 | while (block != 0) |
1267 | { | |
1268 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1269 | values_printed = 1; | |
1270 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1271 | Don't continue to its superblock, the block of |
1272 | per-file symbols. */ | |
c906108c SS |
1273 | if (BLOCK_FUNCTION (block)) |
1274 | break; | |
1275 | block = BLOCK_SUPERBLOCK (block); | |
1276 | } | |
1277 | ||
1278 | if (!values_printed) | |
1279 | { | |
1280 | fprintf_filtered (stream, "No locals.\n"); | |
1281 | } | |
1282 | } | |
1283 | ||
1284 | /* Same, but print labels. */ | |
1285 | ||
1286 | static void | |
fba45db2 KB |
1287 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1288 | register struct ui_file *stream) | |
c906108c SS |
1289 | { |
1290 | register struct blockvector *bl; | |
ae767bfb | 1291 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1292 | register int values_printed = 0; |
1293 | int index, have_default = 0; | |
1294 | char *blocks_printed; | |
1295 | CORE_ADDR pc = fi->pc; | |
1296 | ||
1297 | if (block == 0) | |
1298 | { | |
1299 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1300 | return; | |
1301 | } | |
1302 | ||
1303 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1304 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1305 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1306 | ||
1307 | while (block != 0) | |
1308 | { | |
1309 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1310 | int last_index; | |
1311 | ||
1312 | if (bl != blockvector_for_pc (end, &index)) | |
1313 | error ("blockvector blotch"); | |
1314 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1315 | error ("blockvector botch"); | |
1316 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1317 | index += 1; | |
1318 | ||
1319 | /* Don't print out blocks that have gone by. */ | |
1320 | while (index < last_index | |
1321 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1322 | index++; | |
1323 | ||
1324 | while (index < last_index | |
1325 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1326 | { | |
1327 | if (blocks_printed[index] == 0) | |
1328 | { | |
1329 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1330 | values_printed = 1; | |
1331 | blocks_printed[index] = 1; | |
1332 | } | |
1333 | index++; | |
1334 | } | |
1335 | if (have_default) | |
1336 | return; | |
1337 | if (values_printed && this_level_only) | |
1338 | return; | |
1339 | ||
1340 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1341 | Don't continue to its superblock, the block of |
1342 | per-file symbols. */ | |
c906108c SS |
1343 | if (BLOCK_FUNCTION (block)) |
1344 | break; | |
1345 | block = BLOCK_SUPERBLOCK (block); | |
1346 | } | |
1347 | ||
1348 | if (!values_printed && !this_level_only) | |
1349 | { | |
1350 | fprintf_filtered (stream, "No catches.\n"); | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | /* ARGSUSED */ | |
1355 | void | |
fba45db2 | 1356 | locals_info (char *args, int from_tty) |
c906108c SS |
1357 | { |
1358 | if (!selected_frame) | |
1359 | error ("No frame selected."); | |
1360 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1361 | } | |
1362 | ||
1363 | static void | |
fba45db2 | 1364 | catch_info (char *ignore, int from_tty) |
c906108c | 1365 | { |
c5aa993b | 1366 | struct symtab_and_line *sal; |
c906108c | 1367 | |
c5aa993b | 1368 | /* Check for target support for exception handling */ |
c906108c SS |
1369 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1370 | if (sal) | |
1371 | { | |
1372 | /* Currently not handling this */ | |
1373 | /* Ideally, here we should interact with the C++ runtime | |
1374 | system to find the list of active handlers, etc. */ | |
1375 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1376 | #if 0 | |
c5aa993b JM |
1377 | if (!selected_frame) |
1378 | error ("No frame selected."); | |
c906108c SS |
1379 | #endif |
1380 | } | |
1381 | else | |
1382 | { | |
c5aa993b | 1383 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1384 | if (!selected_frame) |
c5aa993b JM |
1385 | error ("No frame selected."); |
1386 | ||
c906108c SS |
1387 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1388 | } | |
1389 | } | |
1390 | ||
1391 | static void | |
fba45db2 KB |
1392 | print_frame_arg_vars (register struct frame_info *fi, |
1393 | register struct ui_file *stream) | |
c906108c SS |
1394 | { |
1395 | struct symbol *func = get_frame_function (fi); | |
1396 | register struct block *b; | |
c906108c SS |
1397 | register int i; |
1398 | register struct symbol *sym, *sym2; | |
1399 | register int values_printed = 0; | |
1400 | ||
1401 | if (func == 0) | |
1402 | { | |
1403 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1404 | return; | |
1405 | } | |
1406 | ||
1407 | b = SYMBOL_BLOCK_VALUE (func); | |
e88c90f2 | 1408 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1409 | { |
c906108c SS |
1410 | switch (SYMBOL_CLASS (sym)) |
1411 | { | |
1412 | case LOC_ARG: | |
1413 | case LOC_LOCAL_ARG: | |
1414 | case LOC_REF_ARG: | |
1415 | case LOC_REGPARM: | |
1416 | case LOC_REGPARM_ADDR: | |
1417 | case LOC_BASEREG_ARG: | |
1418 | values_printed = 1; | |
1419 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1420 | fputs_filtered (" = ", stream); | |
1421 | ||
1422 | /* We have to look up the symbol because arguments can have | |
1423 | two entries (one a parameter, one a local) and the one we | |
1424 | want is the local, which lookup_symbol will find for us. | |
1425 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1426 | small structure and gcc2 when the argument type is float | |
1427 | and it is passed as a double and converted to float by | |
1428 | the prologue (in the latter case the type of the LOC_ARG | |
1429 | symbol is double and the type of the LOC_LOCAL symbol is | |
1430 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1431 | are not combined in symbol-reading. */ | |
1432 | ||
1433 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1434 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1435 | print_variable_value (sym2, fi, stream); |
1436 | fprintf_filtered (stream, "\n"); | |
1437 | break; | |
1438 | ||
1439 | default: | |
1440 | /* Don't worry about things which aren't arguments. */ | |
1441 | break; | |
1442 | } | |
1443 | } | |
c906108c SS |
1444 | if (!values_printed) |
1445 | { | |
1446 | fprintf_filtered (stream, "No arguments.\n"); | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | void | |
fba45db2 | 1451 | args_info (char *ignore, int from_tty) |
c906108c SS |
1452 | { |
1453 | if (!selected_frame) | |
1454 | error ("No frame selected."); | |
1455 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1456 | } | |
1457 | ||
1458 | ||
1459 | static void | |
fba45db2 | 1460 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1461 | { |
c5aa993b JM |
1462 | args_info (ignore, from_tty); |
1463 | locals_info (ignore, from_tty); | |
c906108c | 1464 | } |
c906108c | 1465 | \f |
c5aa993b | 1466 | |
c906108c SS |
1467 | /* Select frame FI, and note that its stack level is LEVEL. |
1468 | LEVEL may be -1 if an actual level number is not known. */ | |
1469 | ||
1470 | void | |
fba45db2 | 1471 | select_frame (struct frame_info *fi, int level) |
c906108c SS |
1472 | { |
1473 | register struct symtab *s; | |
1474 | ||
1475 | selected_frame = fi; | |
b31da25e AC |
1476 | /* FIXME: cagney/2002-04-21: The variable `selected_frame_level' is |
1477 | deprecated. It will dissapear `real soon now'. */ | |
1478 | selected_frame_level = level; /* DEPRECATED */ | |
7cc19214 AC |
1479 | /* FIXME: cagney/2002-04-05: It can't be this easy (and looking at |
1480 | the increasingly complex list of checkes, it wasn't)! GDB is | |
1481 | dragging around, and constantly updating, the global variable | |
1482 | selected_frame_level. Surely all that was needed was for the | |
1483 | level to be computed direct from the frame (by counting back to | |
1484 | the inner-most frame) or, as has been done here using a cached | |
1485 | value. For moment, check that the expected and the actual level | |
1486 | are consistent. If, after a few weeks, no one reports that this | |
1487 | assertion has failed, the global selected_frame_level and many | |
1488 | many parameters can all be deleted. */ | |
1489 | if (fi == NULL && level == -1) | |
1490 | /* Ok. The target is clearing the selected frame as part of a | |
1491 | cache flush. */ | |
1492 | ; | |
1493 | else if (fi != NULL && fi->level == level) | |
1494 | /* Ok. What you would expect. Level is redundant. */ | |
1495 | ; | |
1496 | else if (fi != NULL && level == -1) | |
1497 | /* Ok. See breakpoint.c. The watchpoint code changes the | |
1498 | selected frame to the frame that contains the watchpoint and | |
1499 | then, later changes it back to the old value. The -1 is used | |
1500 | as a marker so that the watchpoint code can easily detect that | |
1501 | things are not what they should be. Why the watchpoint code | |
1502 | can't mindlessly save/restore the selected frame I don't know, | |
1503 | hopefully it can be simplified that way. Hopefully the global | |
1504 | selected_frame can be replaced by a frame parameter, making | |
1505 | still more simplification possible. */ | |
1506 | ; | |
1507 | else | |
1508 | internal_error (__FILE__, __LINE__, | |
d8c0a2e7 AC |
1509 | "Conflicting frame levels fi->level=%d, level=%d", |
1510 | (fi ? fi->level : -1), | |
1511 | level); | |
c906108c SS |
1512 | if (selected_frame_level_changed_hook) |
1513 | selected_frame_level_changed_hook (level); | |
1514 | ||
1515 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1516 | source language of this frame, and switch to it if desired. */ | |
1517 | if (fi) | |
c5aa993b JM |
1518 | { |
1519 | s = find_pc_symtab (fi->pc); | |
1520 | if (s | |
1521 | && s->language != current_language->la_language | |
1522 | && s->language != language_unknown | |
1523 | && language_mode == language_mode_auto) | |
1524 | { | |
1525 | set_language (s->language); | |
1526 | } | |
c906108c | 1527 | } |
c906108c | 1528 | } |
c906108c | 1529 | \f |
c5aa993b | 1530 | |
c906108c SS |
1531 | /* Select frame FI, noting that its stack level is LEVEL. Also print |
1532 | the stack frame and show the source if this is the tui version. */ | |
1533 | void | |
fba45db2 | 1534 | select_and_print_frame (struct frame_info *fi, int level) |
c906108c | 1535 | { |
c5aa993b | 1536 | select_frame (fi, level); |
c906108c SS |
1537 | if (fi) |
1538 | { | |
c5aa993b | 1539 | print_stack_frame (fi, level, 1); |
c906108c SS |
1540 | } |
1541 | } | |
c906108c | 1542 | \f |
c5aa993b | 1543 | |
c906108c SS |
1544 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. |
1545 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1546 | ||
1547 | void | |
fba45db2 | 1548 | record_selected_frame (CORE_ADDR *frameaddrp, int *levelp) |
c906108c SS |
1549 | { |
1550 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
b31da25e | 1551 | *levelp = frame_relative_level (selected_frame); |
c906108c SS |
1552 | } |
1553 | ||
1554 | /* Return the symbol-block in which the selected frame is executing. | |
ae767bfb JB |
1555 | Can return zero under various legitimate circumstances. |
1556 | ||
1557 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1558 | code address within the block returned. We use this to decide | |
1559 | which macros are in scope. */ | |
c906108c SS |
1560 | |
1561 | struct block * | |
ae767bfb | 1562 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1563 | { |
1564 | if (!target_has_stack) | |
1565 | return 0; | |
1566 | ||
1567 | if (!selected_frame) | |
ae767bfb JB |
1568 | return get_current_block (addr_in_block); |
1569 | return get_frame_block (selected_frame, addr_in_block); | |
c906108c SS |
1570 | } |
1571 | ||
1572 | /* Find a frame a certain number of levels away from FRAME. | |
1573 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1574 | Positive means go to earlier frames (up); negative, the reverse. | |
1575 | The int that contains the number of levels is counted toward | |
1576 | zero as the frames for those levels are found. | |
1577 | If the top or bottom frame is reached, that frame is returned, | |
1578 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1579 | how much farther the original request asked to go. */ | |
1580 | ||
1581 | struct frame_info * | |
fba45db2 KB |
1582 | find_relative_frame (register struct frame_info *frame, |
1583 | register int *level_offset_ptr) | |
c906108c SS |
1584 | { |
1585 | register struct frame_info *prev; | |
1586 | register struct frame_info *frame1; | |
1587 | ||
1588 | /* Going up is simple: just do get_prev_frame enough times | |
1589 | or until initial frame is reached. */ | |
1590 | while (*level_offset_ptr > 0) | |
1591 | { | |
1592 | prev = get_prev_frame (frame); | |
1593 | if (prev == 0) | |
1594 | break; | |
1595 | (*level_offset_ptr)--; | |
1596 | frame = prev; | |
1597 | } | |
1598 | /* Going down is just as simple. */ | |
1599 | if (*level_offset_ptr < 0) | |
1600 | { | |
c5aa993b JM |
1601 | while (*level_offset_ptr < 0) |
1602 | { | |
1603 | frame1 = get_next_frame (frame); | |
1604 | if (!frame1) | |
1605 | break; | |
1606 | frame = frame1; | |
1607 | (*level_offset_ptr)++; | |
1608 | } | |
c906108c SS |
1609 | } |
1610 | return frame; | |
1611 | } | |
1612 | ||
1613 | /* The "select_frame" command. With no arg, NOP. | |
1614 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1615 | valid level. Otherwise, treat level_exp as an address expression | |
1616 | and select it. See parse_frame_specification for more info on proper | |
1617 | frame expressions. */ | |
1618 | ||
1619 | /* ARGSUSED */ | |
8b93c638 | 1620 | void |
fba45db2 | 1621 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1622 | { |
1623 | select_frame_command (level_exp, from_tty); | |
1624 | } | |
8926118c | 1625 | |
c906108c | 1626 | static void |
fba45db2 | 1627 | select_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1628 | { |
1629 | register struct frame_info *frame, *frame1; | |
1630 | unsigned int level = 0; | |
1631 | ||
1632 | if (!target_has_stack) | |
1633 | error ("No stack."); | |
1634 | ||
1635 | frame = parse_frame_specification (level_exp); | |
1636 | ||
1637 | /* Try to figure out what level this frame is. But if there is | |
1638 | no current stack, don't error out -- let the user set one. */ | |
1639 | frame1 = 0; | |
c5aa993b JM |
1640 | if (get_current_frame ()) |
1641 | { | |
1642 | for (frame1 = get_prev_frame (0); | |
1643 | frame1 && frame1 != frame; | |
1644 | frame1 = get_prev_frame (frame1)) | |
1645 | level++; | |
1646 | } | |
c906108c SS |
1647 | |
1648 | if (!frame1) | |
1649 | level = 0; | |
1650 | ||
1651 | select_frame (frame, level); | |
1652 | } | |
1653 | ||
1654 | /* The "frame" command. With no arg, print selected frame briefly. | |
1655 | With arg, behaves like select_frame and then prints the selected | |
1656 | frame. */ | |
1657 | ||
1658 | void | |
fba45db2 | 1659 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1660 | { |
1661 | select_frame_command (level_exp, from_tty); | |
b31da25e AC |
1662 | show_and_print_stack_frame (selected_frame, |
1663 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1664 | } |
1665 | ||
1666 | /* The XDB Compatibility command to print the current frame. */ | |
1667 | ||
7a292a7a | 1668 | static void |
fba45db2 | 1669 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1670 | { |
1671 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1672 | error ("No stack."); |
b31da25e AC |
1673 | print_only_stack_frame (selected_frame, |
1674 | frame_relative_level (selected_frame), 1); | |
7a292a7a | 1675 | } |
c906108c SS |
1676 | |
1677 | /* Select the frame up one or COUNT stack levels | |
1678 | from the previously selected frame, and print it briefly. */ | |
1679 | ||
1680 | /* ARGSUSED */ | |
1681 | static void | |
fba45db2 | 1682 | up_silently_base (char *count_exp) |
c906108c SS |
1683 | { |
1684 | register struct frame_info *fi; | |
1685 | int count = 1, count1; | |
1686 | if (count_exp) | |
bb518678 | 1687 | count = parse_and_eval_long (count_exp); |
c906108c | 1688 | count1 = count; |
c5aa993b | 1689 | |
c906108c SS |
1690 | if (target_has_stack == 0 || selected_frame == 0) |
1691 | error ("No stack."); | |
1692 | ||
1693 | fi = find_relative_frame (selected_frame, &count1); | |
1694 | if (count1 != 0 && count_exp == 0) | |
1695 | error ("Initial frame selected; you cannot go up."); | |
b31da25e | 1696 | select_frame (fi, frame_relative_level (selected_frame) + count - count1); |
c906108c SS |
1697 | } |
1698 | ||
1699 | static void | |
fba45db2 | 1700 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1701 | { |
c5aa993b | 1702 | up_silently_base (count_exp); |
c906108c SS |
1703 | } |
1704 | ||
1705 | static void | |
fba45db2 | 1706 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1707 | { |
1708 | up_silently_base (count_exp); | |
b31da25e AC |
1709 | show_and_print_stack_frame (selected_frame, |
1710 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1711 | } |
1712 | ||
1713 | /* Select the frame down one or COUNT stack levels | |
1714 | from the previously selected frame, and print it briefly. */ | |
1715 | ||
1716 | /* ARGSUSED */ | |
1717 | static void | |
fba45db2 | 1718 | down_silently_base (char *count_exp) |
c906108c SS |
1719 | { |
1720 | register struct frame_info *frame; | |
1721 | int count = -1, count1; | |
1722 | if (count_exp) | |
bb518678 | 1723 | count = -parse_and_eval_long (count_exp); |
c906108c | 1724 | count1 = count; |
c5aa993b | 1725 | |
c906108c SS |
1726 | if (target_has_stack == 0 || selected_frame == 0) |
1727 | error ("No stack."); | |
1728 | ||
1729 | frame = find_relative_frame (selected_frame, &count1); | |
1730 | if (count1 != 0 && count_exp == 0) | |
1731 | { | |
1732 | ||
1733 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1734 | means to really go down (and let me know if that is |
1735 | impossible), but "down 9999" can be used to mean go all the way | |
1736 | down without getting an error. */ | |
c906108c SS |
1737 | |
1738 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1739 | } | |
1740 | ||
b31da25e | 1741 | select_frame (frame, frame_relative_level (selected_frame) + count - count1); |
c906108c SS |
1742 | } |
1743 | ||
1744 | /* ARGSUSED */ | |
1745 | static void | |
fba45db2 | 1746 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1747 | { |
1748 | down_silently_base (count_exp); | |
c906108c SS |
1749 | } |
1750 | ||
1751 | static void | |
fba45db2 | 1752 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1753 | { |
1754 | down_silently_base (count_exp); | |
b31da25e AC |
1755 | show_and_print_stack_frame (selected_frame, |
1756 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1757 | } |
1758 | \f | |
8b93c638 | 1759 | void |
fba45db2 | 1760 | return_command_wrapper (char *retval_exp, int from_tty) |
8b93c638 JM |
1761 | { |
1762 | return_command (retval_exp, from_tty); | |
1763 | } | |
8926118c | 1764 | |
c906108c | 1765 | static void |
fba45db2 | 1766 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1767 | { |
1768 | struct symbol *thisfun; | |
1769 | CORE_ADDR selected_frame_addr; | |
1770 | CORE_ADDR selected_frame_pc; | |
1771 | struct frame_info *frame; | |
3d6d86c6 | 1772 | struct value *return_value = NULL; |
c906108c SS |
1773 | |
1774 | if (selected_frame == NULL) | |
1775 | error ("No selected frame."); | |
1776 | thisfun = get_frame_function (selected_frame); | |
1777 | selected_frame_addr = FRAME_FP (selected_frame); | |
1778 | selected_frame_pc = selected_frame->pc; | |
1779 | ||
1780 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1781 | ||
1782 | if (retval_exp) | |
1783 | { | |
1784 | struct type *return_type = NULL; | |
1785 | ||
1786 | return_value = parse_and_eval (retval_exp); | |
1787 | ||
1788 | /* Cast return value to the return type of the function. */ | |
1789 | if (thisfun != NULL) | |
1790 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1791 | if (return_type == NULL) | |
1792 | return_type = builtin_type_int; | |
1793 | return_value = value_cast (return_type, return_value); | |
1794 | ||
1795 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1796 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1797 | if (VALUE_LAZY (return_value)) |
1798 | value_fetch_lazy (return_value); | |
1799 | } | |
1800 | ||
1801 | /* If interactive, require confirmation. */ | |
1802 | ||
1803 | if (from_tty) | |
1804 | { | |
1805 | if (thisfun != 0) | |
1806 | { | |
1807 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1808 | { | |
1809 | error ("Not confirmed."); | |
1810 | /* NOTREACHED */ | |
1811 | } | |
1812 | } | |
c5aa993b JM |
1813 | else if (!query ("Make selected stack frame return now? ")) |
1814 | error ("Not confirmed."); | |
c906108c SS |
1815 | } |
1816 | ||
1817 | /* Do the real work. Pop until the specified frame is current. We | |
1818 | use this method because the selected_frame is not valid after | |
1819 | a POP_FRAME. The pc comparison makes this work even if the | |
1820 | selected frame shares its fp with another frame. */ | |
1821 | ||
c5aa993b | 1822 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1823 | || selected_frame_pc != frame->pc) |
1824 | POP_FRAME; | |
1825 | ||
1826 | /* Then pop that frame. */ | |
1827 | ||
1828 | POP_FRAME; | |
1829 | ||
1830 | /* Compute the return value (if any) and store in the place | |
1831 | for return values. */ | |
1832 | ||
1833 | if (retval_exp) | |
1834 | set_return_value (return_value); | |
1835 | ||
1a2aab69 PS |
1836 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1837 | ||
1838 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
1839 | FRAME_FP (get_current_frame ()))) | |
1840 | POP_FRAME; | |
1841 | ||
c906108c SS |
1842 | /* If interactive, print the frame that is now current. */ |
1843 | ||
1844 | if (from_tty) | |
1845 | frame_command ("0", 1); | |
1846 | else | |
1847 | select_frame_command ("0", 0); | |
1848 | } | |
1849 | ||
1850 | /* Sets the scope to input function name, provided that the | |
1851 | function is within the current stack frame */ | |
1852 | ||
1853 | struct function_bounds | |
1854 | { | |
1855 | CORE_ADDR low, high; | |
1856 | }; | |
1857 | ||
a14ed312 | 1858 | static void func_command (char *arg, int from_tty); |
c906108c | 1859 | static void |
fba45db2 | 1860 | func_command (char *arg, int from_tty) |
c906108c SS |
1861 | { |
1862 | struct frame_info *fp; | |
1863 | int found = 0; | |
1864 | struct symtabs_and_lines sals; | |
1865 | int i; | |
1866 | int level = 1; | |
1867 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1868 | ||
1869 | if (arg != (char *) NULL) | |
1870 | return; | |
1871 | ||
1872 | fp = parse_frame_specification ("0"); | |
1873 | sals = decode_line_spec (arg, 1); | |
1874 | func_bounds = (struct function_bounds *) xmalloc ( | |
1875 | sizeof (struct function_bounds) * sals.nelts); | |
1876 | for (i = 0; (i < sals.nelts && !found); i++) | |
1877 | { | |
1878 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1879 | find_pc_partial_function (sals.sals[i].pc, | |
1880 | (char **) NULL, | |
1881 | &func_bounds[i].low, | |
1882 | &func_bounds[i].high) == 0) | |
1883 | { | |
1884 | func_bounds[i].low = | |
1885 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1886 | } | |
1887 | } | |
1888 | ||
1889 | do | |
1890 | { | |
1891 | for (i = 0; (i < sals.nelts && !found); i++) | |
1892 | found = (fp->pc >= func_bounds[i].low && | |
1893 | fp->pc < func_bounds[i].high); | |
1894 | if (!found) | |
1895 | { | |
1896 | level = 1; | |
1897 | fp = find_relative_frame (fp, &level); | |
1898 | } | |
1899 | } | |
1900 | while (!found && level == 0); | |
1901 | ||
1902 | if (func_bounds) | |
b8c9b27d | 1903 | xfree (func_bounds); |
c906108c SS |
1904 | |
1905 | if (!found) | |
1906 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1907 | else if (fp != selected_frame) | |
1908 | select_and_print_frame (fp, level); | |
1909 | } | |
1910 | ||
1911 | /* Gets the language of the current frame. */ | |
1912 | ||
1913 | enum language | |
fba45db2 | 1914 | get_frame_language (void) |
c906108c SS |
1915 | { |
1916 | register struct symtab *s; | |
1917 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1918 | |
c906108c SS |
1919 | if (selected_frame) |
1920 | { | |
c5aa993b | 1921 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1922 | if (s) |
1923 | flang = s->language; | |
1924 | else | |
1925 | flang = language_unknown; | |
1926 | } | |
1927 | else | |
1928 | flang = language_unknown; | |
1929 | ||
1930 | return flang; | |
1931 | } | |
1932 | \f | |
1933 | void | |
fba45db2 | 1934 | _initialize_stack (void) |
c906108c | 1935 | { |
c5aa993b | 1936 | #if 0 |
c906108c SS |
1937 | backtrace_limit = 30; |
1938 | #endif | |
1939 | ||
1940 | add_com ("return", class_stack, return_command, | |
1941 | "Make selected stack frame return to its caller.\n\ | |
1942 | Control remains in the debugger, but when you continue\n\ | |
1943 | execution will resume in the frame above the one now selected.\n\ | |
1944 | If an argument is given, it is an expression for the value to return."); | |
1945 | ||
1946 | add_com ("up", class_stack, up_command, | |
1947 | "Select and print stack frame that called this one.\n\ | |
1948 | An argument says how many frames up to go."); | |
1949 | add_com ("up-silently", class_support, up_silently_command, | |
1950 | "Same as the `up' command, but does not print anything.\n\ | |
1951 | This is useful in command scripts."); | |
1952 | ||
1953 | add_com ("down", class_stack, down_command, | |
1954 | "Select and print stack frame called by this one.\n\ | |
1955 | An argument says how many frames down to go."); | |
1956 | add_com_alias ("do", "down", class_stack, 1); | |
1957 | add_com_alias ("dow", "down", class_stack, 1); | |
1958 | add_com ("down-silently", class_support, down_silently_command, | |
1959 | "Same as the `down' command, but does not print anything.\n\ | |
1960 | This is useful in command scripts."); | |
1961 | ||
1962 | add_com ("frame", class_stack, frame_command, | |
1963 | "Select and print a stack frame.\n\ | |
1964 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1965 | An argument specifies the frame to select.\n\ | |
1966 | It can be a stack frame number or the address of the frame.\n\ | |
1967 | With argument, nothing is printed if input is coming from\n\ | |
1968 | a command file or a user-defined command."); | |
1969 | ||
1970 | add_com_alias ("f", "frame", class_stack, 1); | |
1971 | ||
1972 | if (xdb_commands) | |
1973 | { | |
c5aa993b JM |
1974 | add_com ("L", class_stack, current_frame_command, |
1975 | "Print the current stack frame.\n"); | |
c906108c SS |
1976 | add_com_alias ("V", "frame", class_stack, 1); |
1977 | } | |
1978 | add_com ("select-frame", class_stack, select_frame_command, | |
1979 | "Select a stack frame without printing anything.\n\ | |
1980 | An argument specifies the frame to select.\n\ | |
1981 | It can be a stack frame number or the address of the frame.\n"); | |
1982 | ||
1983 | add_com ("backtrace", class_stack, backtrace_command, | |
1984 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1985 | With a negative argument, print outermost -COUNT frames.\n\ | |
1986 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1987 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1988 | if (xdb_commands) | |
1989 | { | |
1990 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1991 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1992 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1993 | and the values of the local variables.\n\ |
1994 | With a negative argument, print outermost -COUNT frames.\n\ | |
1995 | Usage: T <count>\n"); | |
1996 | } | |
1997 | ||
1998 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1999 | add_info ("stack", backtrace_command, | |
2000 | "Backtrace of the stack, or innermost COUNT frames."); | |
2001 | add_info_alias ("s", "stack", 1); | |
2002 | add_info ("frame", frame_info, | |
2003 | "All about selected stack frame, or frame at ADDR."); | |
2004 | add_info_alias ("f", "frame", 1); | |
2005 | add_info ("locals", locals_info, | |
2006 | "Local variables of current stack frame."); | |
2007 | add_info ("args", args_info, | |
2008 | "Argument variables of current stack frame."); | |
2009 | if (xdb_commands) | |
c5aa993b JM |
2010 | add_com ("l", class_info, args_plus_locals_info, |
2011 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2012 | |
2013 | if (dbx_commands) | |
c5aa993b JM |
2014 | add_com ("func", class_stack, func_command, |
2015 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2016 | |
2017 | add_info ("catch", catch_info, | |
2018 | "Exceptions that can be caught in the current stack frame."); | |
2019 | ||
2020 | #if 0 | |
c5aa993b JM |
2021 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2022 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2023 | &setlist); |
2024 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2025 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2026 | #endif |
2027 | } |