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" | |
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" |
c906108c SS |
42 | |
43 | /* Prototypes for exported functions. */ | |
44 | ||
a14ed312 | 45 | void args_info (char *, int); |
c906108c | 46 | |
a14ed312 | 47 | void locals_info (char *, int); |
c906108c | 48 | |
507f3c78 | 49 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 50 | |
a14ed312 | 51 | void _initialize_stack (void); |
c906108c | 52 | |
a58dd373 | 53 | void return_command (char *, int); |
c906108c | 54 | |
a58dd373 | 55 | /* Prototypes for local functions. */ |
c906108c | 56 | |
a14ed312 | 57 | static void down_command (char *, int); |
c906108c | 58 | |
a14ed312 | 59 | static void down_silently_base (char *); |
c906108c | 60 | |
a14ed312 | 61 | static void down_silently_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void up_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void up_silently_base (char *); |
c906108c | 66 | |
a14ed312 | 67 | static void up_silently_command (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | void frame_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void current_frame_command (char *, int); |
7a292a7a | 72 | |
a14ed312 | 73 | static void select_frame_command (char *, int); |
c906108c | 74 | |
d9fcf2fb | 75 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 76 | |
a14ed312 | 77 | static void catch_info (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void args_plus_locals_info (char *, int); |
c906108c | 80 | |
d9fcf2fb JM |
81 | static void print_frame_label_vars (struct frame_info *, int, |
82 | struct ui_file *); | |
c906108c | 83 | |
d9fcf2fb JM |
84 | static void print_frame_local_vars (struct frame_info *, int, |
85 | struct ui_file *); | |
c906108c | 86 | |
d9fcf2fb JM |
87 | static int print_block_frame_labels (struct block *, int *, |
88 | struct ui_file *); | |
c906108c | 89 | |
d9fcf2fb JM |
90 | static int print_block_frame_locals (struct block *, |
91 | struct frame_info *, | |
92 | int, | |
93 | struct ui_file *); | |
c906108c | 94 | |
c5394b80 JM |
95 | static void print_frame (struct frame_info *fi, |
96 | int level, | |
97 | int source, | |
98 | int args, | |
99 | struct symtab_and_line sal); | |
100 | ||
a14ed312 | 101 | static void print_frame_info_base (struct frame_info *, int, int, int); |
c5aa993b | 102 | |
a14ed312 | 103 | static void print_stack_frame_base (struct frame_info *, int, int); |
c906108c | 104 | |
a14ed312 | 105 | static void backtrace_command (char *, int); |
c906108c | 106 | |
a14ed312 | 107 | struct frame_info *parse_frame_specification (char *); |
c906108c | 108 | |
a14ed312 | 109 | static void frame_info (char *, int); |
c906108c SS |
110 | |
111 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
c906108c SS |
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 | /* Level of the selected frame: 0 for innermost, 1 for its caller, ... |
123 | or -1 for NULL frame. */ | |
124 | ||
125 | int | |
126 | frame_relative_level (struct frame_info *fi) | |
127 | { | |
128 | if (fi == NULL) | |
129 | return -1; | |
130 | else | |
131 | return fi->level; | |
132 | } | |
c906108c SS |
133 | |
134 | /* Zero means do things normally; we are interacting directly with the | |
135 | user. One means print the full filename and linenumber when a | |
136 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
137 | parse. Two means print similar annotations, but in many more | |
138 | cases and in a slightly different syntax. */ | |
139 | ||
140 | int annotation_level = 0; | |
c906108c | 141 | \f |
c5aa993b JM |
142 | |
143 | struct print_stack_frame_args | |
144 | { | |
145 | struct frame_info *fi; | |
146 | int level; | |
147 | int source; | |
148 | int args; | |
149 | }; | |
c906108c | 150 | |
a14ed312 | 151 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
152 | |
153 | /* Show and print the frame arguments. | |
154 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 155 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 156 | static int |
fba45db2 | 157 | show_and_print_stack_frame_stub (void *args) |
c906108c | 158 | { |
c5aa993b | 159 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 160 | |
c906108c SS |
161 | print_frame_info (p->fi, p->level, p->source, p->args); |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | /* Show or print the frame arguments. | |
167 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 168 | static int print_stack_frame_stub (void *args); |
c906108c | 169 | static int |
fba45db2 | 170 | print_stack_frame_stub (void *args) |
c906108c | 171 | { |
c5aa993b | 172 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 173 | |
37767e42 | 174 | print_frame_info_base (p->fi, p->level, p->source, p->args); |
c906108c SS |
175 | return 0; |
176 | } | |
177 | ||
178 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
179 | and LEVEL should be its level in the stack (or -1 for level not | |
180 | defined). */ | |
181 | ||
182 | /* Pass the args the way catch_errors wants them. */ | |
183 | static int | |
fba45db2 | 184 | print_stack_frame_base_stub (char *args) |
c906108c | 185 | { |
c5aa993b | 186 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
187 | |
188 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
189 | return 0; | |
190 | } | |
191 | ||
192 | /* print the frame arguments to the terminal. | |
193 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 194 | static int print_only_stack_frame_stub (void *); |
c906108c | 195 | static int |
fba45db2 | 196 | print_only_stack_frame_stub (void *args) |
c906108c | 197 | { |
c5aa993b | 198 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
199 | |
200 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
205 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
206 | This prints the level, the function executing, the arguments, | |
207 | and the file name and line number. | |
208 | If the pc is not at the beginning of the source line, | |
209 | the actual pc is printed at the beginning. | |
210 | ||
211 | If SOURCE is 1, print the source line as well. | |
212 | If SOURCE is -1, print ONLY the source line. */ | |
213 | ||
214 | static void | |
fba45db2 | 215 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
216 | { |
217 | struct print_stack_frame_args args; | |
218 | ||
219 | args.fi = fi; | |
220 | args.level = level; | |
221 | args.source = source; | |
222 | args.args = 1; | |
223 | ||
7a292a7a | 224 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
225 | } |
226 | ||
227 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
228 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
229 | This prints the level, the function executing, the arguments, | |
230 | and the file name and line number. | |
231 | If the pc is not at the beginning of the source line, | |
232 | the actual pc is printed at the beginning. | |
233 | ||
234 | If SOURCE is 1, print the source line as well. | |
235 | If SOURCE is -1, print ONLY the source line. */ | |
236 | ||
237 | void | |
fba45db2 | 238 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
239 | { |
240 | struct print_stack_frame_args args; | |
241 | ||
242 | args.fi = fi; | |
243 | args.level = level; | |
244 | args.source = source; | |
245 | args.args = 1; | |
246 | ||
7a292a7a | 247 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
248 | } |
249 | ||
250 | ||
251 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
252 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
253 | This prints the level, the function executing, the arguments, | |
254 | and the file name and line number. | |
255 | If the pc is not at the beginning of the source line, | |
256 | the actual pc is printed at the beginning. | |
257 | ||
258 | If SOURCE is 1, print the source line as well. | |
259 | If SOURCE is -1, print ONLY the source line. */ | |
260 | ||
261 | void | |
fba45db2 | 262 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
263 | { |
264 | struct print_stack_frame_args args; | |
265 | ||
266 | args.fi = fi; | |
267 | args.level = level; | |
268 | args.source = source; | |
269 | args.args = 1; | |
270 | ||
c5aa993b | 271 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
272 | } |
273 | ||
274 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
275 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
276 | This prints the level, the function executing, the arguments, | |
277 | and the file name and line number. | |
278 | If the pc is not at the beginning of the source line, | |
279 | the actual pc is printed at the beginning. | |
280 | ||
281 | If SOURCE is 1, print the source line as well. | |
282 | If SOURCE is -1, print ONLY the source line. */ | |
283 | ||
284 | void | |
fba45db2 | 285 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
286 | { |
287 | struct print_stack_frame_args args; | |
288 | ||
289 | args.fi = fi; | |
290 | args.level = level; | |
291 | args.source = source; | |
292 | args.args = 1; | |
293 | ||
7a292a7a | 294 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
295 | } |
296 | ||
c5aa993b JM |
297 | struct print_args_args |
298 | { | |
c906108c SS |
299 | struct symbol *func; |
300 | struct frame_info *fi; | |
d9fcf2fb | 301 | struct ui_file *stream; |
c906108c SS |
302 | }; |
303 | ||
a14ed312 | 304 | static int print_args_stub (PTR); |
c906108c SS |
305 | |
306 | /* Pass the args the way catch_errors wants them. */ | |
307 | ||
308 | static int | |
fba45db2 | 309 | print_args_stub (PTR args) |
c906108c SS |
310 | { |
311 | int numargs; | |
c5aa993b | 312 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 313 | |
392a587b | 314 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 315 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
316 | return 0; |
317 | } | |
318 | ||
319 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
320 | Used in "where" output, also used to emit breakpoint or step |
321 | messages. | |
322 | LEVEL is the level of the frame, or -1 if it is the | |
323 | innermost frame but we don't want to print the level. | |
324 | The meaning of the SOURCE argument is: | |
325 | SRC_LINE: Print only source line | |
326 | LOCATION: Print only location | |
327 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
328 | |
329 | static void | |
fba45db2 | 330 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
331 | { |
332 | struct symtab_and_line sal; | |
c5394b80 JM |
333 | int source_print; |
334 | int location_print; | |
c906108c SS |
335 | |
336 | #if 0 | |
337 | char buf[MAX_REGISTER_RAW_SIZE]; | |
338 | CORE_ADDR sp; | |
339 | ||
340 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
341 | ||
342 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
343 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
344 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
345 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
346 | ||
347 | /* This is not a perfect test, because if a function alloca's some | |
348 | memory, puts some code there, and then jumps into it, then the test | |
349 | will succeed even though there is no call dummy. Probably best is | |
350 | to check for a bp_call_dummy breakpoint. */ | |
351 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
352 | #else | |
353 | if (frame_in_dummy (fi)) | |
354 | #endif | |
355 | { | |
356 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
357 | ||
358 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 359 | to list for this frame. */ |
c906108c SS |
360 | if (level >= 0) |
361 | printf_filtered ("#%-2d ", level); | |
362 | annotate_function_call (); | |
363 | printf_filtered ("<function called from gdb>\n"); | |
364 | annotate_frame_end (); | |
365 | return; | |
366 | } | |
367 | if (fi->signal_handler_caller) | |
368 | { | |
369 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
370 | ||
371 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 372 | to list for this frame. */ |
c906108c SS |
373 | if (level >= 0) |
374 | printf_filtered ("#%-2d ", level); | |
375 | annotate_signal_handler_caller (); | |
376 | printf_filtered ("<signal handler called>\n"); | |
377 | annotate_frame_end (); | |
378 | return; | |
379 | } | |
380 | ||
381 | /* If fi is not the innermost frame, that normally means that fi->pc | |
382 | points to *after* the call instruction, and we want to get the line | |
383 | containing the call, never the next line. But if the next frame is | |
384 | a signal_handler_caller or a dummy frame, then the next frame was | |
385 | not entered as the result of a call, and we want to get the line | |
386 | containing fi->pc. */ | |
387 | sal = | |
388 | find_pc_line (fi->pc, | |
389 | fi->next != NULL | |
390 | && !fi->next->signal_handler_caller | |
391 | && !frame_in_dummy (fi->next)); | |
392 | ||
c5394b80 JM |
393 | location_print = (source == LOCATION |
394 | || source == LOC_AND_ADDRESS | |
395 | || source == SRC_AND_LOC); | |
396 | ||
397 | if (location_print || !sal.symtab) | |
398 | print_frame (fi, level, source, args, sal); | |
399 | ||
400 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
0378c332 | 401 | |
66609862 | 402 | if (sal.symtab) |
0378c332 | 403 | set_current_source_symtab_and_line (&sal); |
c5394b80 JM |
404 | |
405 | if (source_print && sal.symtab) | |
406 | { | |
0378c332 | 407 | struct symtab_and_line cursal; |
c5394b80 JM |
408 | int done = 0; |
409 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
410 | ||
411 | if (annotation_level) | |
412 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
413 | fi->pc); | |
414 | if (!done) | |
415 | { | |
ba4bbdcb | 416 | if (print_frame_info_listing_hook) |
66609862 | 417 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); |
ba4bbdcb | 418 | else |
c5394b80 | 419 | { |
ba4bbdcb KS |
420 | /* We used to do this earlier, but that is clearly |
421 | wrong. This function is used by many different | |
422 | parts of gdb, including normal_stop in infrun.c, | |
423 | which uses this to print out the current PC | |
424 | when we stepi/nexti into the middle of a source | |
425 | line. Only the command line really wants this | |
426 | behavior. Other UIs probably would like the | |
427 | ability to decide for themselves if it is desired. */ | |
428 | if (addressprint && mid_statement) | |
429 | { | |
ba4bbdcb KS |
430 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
431 | ui_out_text (uiout, "\t"); | |
ba4bbdcb KS |
432 | } |
433 | ||
434 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 435 | } |
c5394b80 | 436 | } |
53cb0458 FN |
437 | /* Make sure we have at least a default source file */ |
438 | set_default_source_symtab_and_line (); | |
439 | cursal = get_current_source_symtab_and_line (); | |
0378c332 FN |
440 | cursal.line = max (sal.line - get_lines_to_list () / 2, 1); |
441 | set_current_source_symtab_and_line (&cursal); | |
c5394b80 JM |
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 | |
6f0eaa01 | 469 | func = find_pc_function (frame_address_in_block (fi)); |
c906108c SS |
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 | 487 | |
6f0eaa01 | 488 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c | 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 | { | |
6f0eaa01 | 536 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c SS |
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 | ||
4f460812 AC |
937 | if (fi->saved_regs == NULL) |
938 | FRAME_INIT_SAVED_REGS (fi); | |
939 | /* Print as much information as possible on the location of all the | |
940 | registers. */ | |
941 | { | |
942 | enum lval_type lval; | |
943 | int optimized; | |
944 | CORE_ADDR addr; | |
945 | int realnum; | |
946 | int count; | |
947 | int i; | |
948 | int need_nl = 1; | |
949 | ||
950 | /* The sp is special; what's displayed isn't the save address, but | |
951 | the value of the previous frame's sp. This is a legacy thing, | |
952 | at one stage the frame cached the previous frame's SP instead | |
953 | of its address, hence it was easiest to just display the cached | |
954 | value. */ | |
955 | if (SP_REGNUM >= 0) | |
956 | { | |
957 | /* Find out the location of the saved stack pointer with out | |
958 | actually evaluating it. */ | |
959 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
960 | &realnum, NULL); | |
961 | if (!optimized && lval == not_lval) | |
c906108c | 962 | { |
4f460812 AC |
963 | void *value = alloca (MAX_REGISTER_RAW_SIZE); |
964 | CORE_ADDR sp; | |
965 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
966 | &realnum, value); | |
967 | sp = extract_address (value, REGISTER_RAW_SIZE (SP_REGNUM)); | |
968 | printf_filtered (" Previous frame's sp is "); | |
969 | print_address_numeric (sp, 1, gdb_stdout); | |
970 | printf_filtered ("\n"); | |
971 | need_nl = 0; | |
c906108c | 972 | } |
4f460812 AC |
973 | else if (!optimized && lval == lval_memory) |
974 | { | |
975 | printf_filtered (" Previous frame's sp at "); | |
976 | print_address_numeric (addr, 1, gdb_stdout); | |
977 | printf_filtered ("\n"); | |
978 | need_nl = 0; | |
979 | } | |
980 | else if (!optimized && lval == lval_register) | |
981 | { | |
982 | printf_filtered (" Previous frame's sp in %s\n", | |
983 | REGISTER_NAME (realnum)); | |
984 | need_nl = 0; | |
985 | } | |
986 | /* else keep quiet. */ | |
987 | } | |
988 | ||
989 | count = 0; | |
990 | numregs = NUM_REGS + NUM_PSEUDO_REGS; | |
991 | for (i = 0; i < numregs; i++) | |
992 | if (i != SP_REGNUM) | |
993 | { | |
994 | /* Find out the location of the saved register without | |
995 | fetching the corresponding value. */ | |
996 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
997 | NULL); | |
998 | /* For moment, only display registers that were saved on the | |
999 | stack. */ | |
1000 | if (!optimized && lval == lval_memory) | |
1001 | { | |
1002 | if (count == 0) | |
1003 | puts_filtered (" Saved registers:\n "); | |
1004 | else | |
1005 | puts_filtered (","); | |
1006 | wrap_here (" "); | |
1007 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
1008 | print_address_numeric (addr, 1, gdb_stdout); | |
1009 | count++; | |
1010 | } | |
1011 | } | |
1012 | if (count || need_nl) | |
c906108c | 1013 | puts_filtered ("\n"); |
4f460812 | 1014 | } |
c906108c SS |
1015 | } |
1016 | ||
1017 | #if 0 | |
1018 | /* Set a limit on the number of frames printed by default in a | |
1019 | backtrace. */ | |
1020 | ||
1021 | static int backtrace_limit; | |
1022 | ||
1023 | static void | |
fba45db2 | 1024 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 1025 | { |
bb518678 | 1026 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
1027 | |
1028 | if (count < 0) | |
1029 | error ("Negative argument not meaningful as backtrace limit."); | |
1030 | ||
1031 | backtrace_limit = count; | |
1032 | } | |
1033 | ||
1034 | static void | |
fba45db2 | 1035 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1036 | { |
1037 | if (arg) | |
1038 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1039 | ||
1040 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1041 | } | |
1042 | #endif | |
1043 | ||
1044 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1045 | ||
a14ed312 KB |
1046 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1047 | int from_tty); | |
c906108c | 1048 | static void |
fba45db2 | 1049 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1050 | { |
1051 | struct frame_info *fi; | |
1052 | register int count; | |
1053 | register int i; | |
1054 | register struct frame_info *trailing; | |
1055 | register int trailing_level; | |
1056 | ||
1057 | if (!target_has_stack) | |
1058 | error ("No stack."); | |
1059 | ||
1060 | /* The following code must do two things. First, it must | |
1061 | set the variable TRAILING to the frame from which we should start | |
1062 | printing. Second, it must set the variable count to the number | |
1063 | of frames which we should print, or -1 if all of them. */ | |
1064 | trailing = get_current_frame (); | |
d082b2bb AC |
1065 | |
1066 | /* The target can be in a state where there is no valid frames | |
1067 | (e.g., just connected). */ | |
1068 | if (trailing == NULL) | |
1069 | error ("No stack."); | |
1070 | ||
c906108c SS |
1071 | trailing_level = 0; |
1072 | if (count_exp) | |
1073 | { | |
bb518678 | 1074 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1075 | if (count < 0) |
1076 | { | |
1077 | struct frame_info *current; | |
1078 | ||
1079 | count = -count; | |
1080 | ||
1081 | current = trailing; | |
1082 | while (current && count--) | |
1083 | { | |
1084 | QUIT; | |
1085 | current = get_prev_frame (current); | |
1086 | } | |
c5aa993b | 1087 | |
c906108c SS |
1088 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1089 | will be COUNT below it. */ | |
1090 | while (current) | |
1091 | { | |
1092 | QUIT; | |
1093 | trailing = get_prev_frame (trailing); | |
1094 | current = get_prev_frame (current); | |
1095 | trailing_level++; | |
1096 | } | |
c5aa993b | 1097 | |
c906108c SS |
1098 | count = -1; |
1099 | } | |
1100 | } | |
1101 | else | |
1102 | count = -1; | |
1103 | ||
1104 | if (info_verbose) | |
1105 | { | |
1106 | struct partial_symtab *ps; | |
c5aa993b | 1107 | |
c906108c | 1108 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1109 | a separate pass so that "Reading in symbols for xxx" messages |
1110 | don't screw up the appearance of the backtrace. Also | |
1111 | if people have strong opinions against reading symbols for | |
1112 | backtrace this may have to be an option. */ | |
c906108c SS |
1113 | i = count; |
1114 | for (fi = trailing; | |
1115 | fi != NULL && i--; | |
1116 | fi = get_prev_frame (fi)) | |
1117 | { | |
1118 | QUIT; | |
6f0eaa01 | 1119 | ps = find_pc_psymtab (frame_address_in_block (fi)); |
c906108c SS |
1120 | if (ps) |
1121 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | for (i = 0, fi = trailing; | |
1126 | fi && count--; | |
1127 | i++, fi = get_prev_frame (fi)) | |
1128 | { | |
1129 | QUIT; | |
1130 | ||
1131 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1132 | means further attempts to backtrace would fail (on the other |
1133 | hand, perhaps the code does or could be fixed to make sure | |
1134 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1135 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1136 | if (show_locals) | |
c5aa993b | 1137 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1138 | } |
1139 | ||
1140 | /* If we've stopped before the end, mention that. */ | |
1141 | if (fi && from_tty) | |
1142 | printf_filtered ("(More stack frames follow...)\n"); | |
1143 | } | |
1144 | ||
1145 | static void | |
fba45db2 | 1146 | backtrace_command (char *arg, int from_tty) |
c906108c | 1147 | { |
c5aa993b JM |
1148 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1149 | char **argv = (char **) NULL; | |
1150 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1151 | char *argPtr = arg; | |
c906108c | 1152 | |
c5aa993b | 1153 | if (arg != (char *) NULL) |
c906108c SS |
1154 | { |
1155 | int i; | |
1156 | ||
c5aa993b | 1157 | argv = buildargv (arg); |
7a292a7a | 1158 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1159 | argc = 0; |
c5aa993b JM |
1160 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1161 | { | |
745b8ca0 | 1162 | unsigned int j; |
c5aa993b JM |
1163 | |
1164 | for (j = 0; (j < strlen (argv[i])); j++) | |
1165 | argv[i][j] = tolower (argv[i][j]); | |
1166 | ||
1167 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1168 | argIndicatingFullTrace = argc; | |
1169 | else | |
1170 | { | |
1171 | argc++; | |
1172 | totArgLen += strlen (argv[i]); | |
1173 | } | |
1174 | } | |
c906108c SS |
1175 | totArgLen += argc; |
1176 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1177 | { |
1178 | if (totArgLen > 0) | |
1179 | { | |
1180 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1181 | if (!argPtr) | |
1182 | nomem (0); | |
1183 | else | |
1184 | { | |
1185 | memset (argPtr, 0, totArgLen + 1); | |
1186 | for (i = 0; (i < (argc + 1)); i++) | |
1187 | { | |
1188 | if (i != argIndicatingFullTrace) | |
1189 | { | |
1190 | strcat (argPtr, argv[i]); | |
1191 | strcat (argPtr, " "); | |
1192 | } | |
1193 | } | |
1194 | } | |
1195 | } | |
1196 | else | |
1197 | argPtr = (char *) NULL; | |
1198 | } | |
c906108c SS |
1199 | } |
1200 | ||
1201 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1202 | ||
1203 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1204 | xfree (argPtr); |
c906108c SS |
1205 | |
1206 | if (old_chain) | |
c5aa993b | 1207 | do_cleanups (old_chain); |
c906108c SS |
1208 | } |
1209 | ||
a14ed312 | 1210 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1211 | static void |
fba45db2 | 1212 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1213 | { |
1214 | backtrace_command_1 (arg, 1, from_tty); | |
1215 | } | |
c906108c | 1216 | \f |
c5aa993b | 1217 | |
c906108c SS |
1218 | /* Print the local variables of a block B active in FRAME. |
1219 | Return 1 if any variables were printed; 0 otherwise. */ | |
1220 | ||
1221 | static int | |
fba45db2 KB |
1222 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1223 | int num_tabs, register struct ui_file *stream) | |
c906108c | 1224 | { |
c906108c SS |
1225 | register int i, j; |
1226 | register struct symbol *sym; | |
1227 | register int values_printed = 0; | |
1228 | ||
e88c90f2 | 1229 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1230 | { |
c906108c SS |
1231 | switch (SYMBOL_CLASS (sym)) |
1232 | { | |
1233 | case LOC_LOCAL: | |
1234 | case LOC_REGISTER: | |
1235 | case LOC_STATIC: | |
1236 | case LOC_BASEREG: | |
1237 | values_printed = 1; | |
1238 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1239 | fputs_filtered ("\t", stream); |
c906108c SS |
1240 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1241 | fputs_filtered (" = ", stream); | |
1242 | print_variable_value (sym, fi, stream); | |
1243 | fprintf_filtered (stream, "\n"); | |
1244 | break; | |
1245 | ||
1246 | default: | |
1247 | /* Ignore symbols which are not locals. */ | |
1248 | break; | |
1249 | } | |
1250 | } | |
1251 | return values_printed; | |
1252 | } | |
1253 | ||
1254 | /* Same, but print labels. */ | |
1255 | ||
1256 | static int | |
fba45db2 KB |
1257 | print_block_frame_labels (struct block *b, int *have_default, |
1258 | register struct ui_file *stream) | |
c906108c | 1259 | { |
c906108c SS |
1260 | register int i; |
1261 | register struct symbol *sym; | |
1262 | register int values_printed = 0; | |
1263 | ||
e88c90f2 | 1264 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1265 | { |
c906108c SS |
1266 | if (STREQ (SYMBOL_NAME (sym), "default")) |
1267 | { | |
1268 | if (*have_default) | |
1269 | continue; | |
1270 | *have_default = 1; | |
1271 | } | |
1272 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1273 | { | |
1274 | struct symtab_and_line sal; | |
1275 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1276 | values_printed = 1; | |
1277 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1278 | if (addressprint) | |
1279 | { | |
1280 | fprintf_filtered (stream, " "); | |
1281 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1282 | } | |
1283 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1284 | sal.symtab->filename, sal.line); | |
1285 | } | |
1286 | } | |
1287 | return values_printed; | |
1288 | } | |
1289 | ||
1290 | /* Print on STREAM all the local variables in frame FRAME, | |
1291 | including all the blocks active in that frame | |
1292 | at its current pc. | |
1293 | ||
1294 | Returns 1 if the job was done, | |
1295 | or 0 if nothing was printed because we have no info | |
1296 | on the function running in FRAME. */ | |
1297 | ||
1298 | static void | |
fba45db2 KB |
1299 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1300 | register struct ui_file *stream) | |
c906108c | 1301 | { |
ae767bfb | 1302 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1303 | register int values_printed = 0; |
1304 | ||
1305 | if (block == 0) | |
1306 | { | |
1307 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1308 | return; | |
1309 | } | |
c5aa993b | 1310 | |
c906108c SS |
1311 | while (block != 0) |
1312 | { | |
1313 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1314 | values_printed = 1; | |
1315 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1316 | Don't continue to its superblock, the block of |
1317 | per-file symbols. */ | |
c906108c SS |
1318 | if (BLOCK_FUNCTION (block)) |
1319 | break; | |
1320 | block = BLOCK_SUPERBLOCK (block); | |
1321 | } | |
1322 | ||
1323 | if (!values_printed) | |
1324 | { | |
1325 | fprintf_filtered (stream, "No locals.\n"); | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | /* Same, but print labels. */ | |
1330 | ||
1331 | static void | |
fba45db2 KB |
1332 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1333 | register struct ui_file *stream) | |
c906108c SS |
1334 | { |
1335 | register struct blockvector *bl; | |
ae767bfb | 1336 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1337 | register int values_printed = 0; |
1338 | int index, have_default = 0; | |
1339 | char *blocks_printed; | |
1340 | CORE_ADDR pc = fi->pc; | |
1341 | ||
1342 | if (block == 0) | |
1343 | { | |
1344 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1345 | return; | |
1346 | } | |
1347 | ||
1348 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1349 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1350 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1351 | ||
1352 | while (block != 0) | |
1353 | { | |
1354 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1355 | int last_index; | |
1356 | ||
1357 | if (bl != blockvector_for_pc (end, &index)) | |
1358 | error ("blockvector blotch"); | |
1359 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1360 | error ("blockvector botch"); | |
1361 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1362 | index += 1; | |
1363 | ||
1364 | /* Don't print out blocks that have gone by. */ | |
1365 | while (index < last_index | |
1366 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1367 | index++; | |
1368 | ||
1369 | while (index < last_index | |
1370 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1371 | { | |
1372 | if (blocks_printed[index] == 0) | |
1373 | { | |
1374 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1375 | values_printed = 1; | |
1376 | blocks_printed[index] = 1; | |
1377 | } | |
1378 | index++; | |
1379 | } | |
1380 | if (have_default) | |
1381 | return; | |
1382 | if (values_printed && this_level_only) | |
1383 | return; | |
1384 | ||
1385 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1386 | Don't continue to its superblock, the block of |
1387 | per-file symbols. */ | |
c906108c SS |
1388 | if (BLOCK_FUNCTION (block)) |
1389 | break; | |
1390 | block = BLOCK_SUPERBLOCK (block); | |
1391 | } | |
1392 | ||
1393 | if (!values_printed && !this_level_only) | |
1394 | { | |
1395 | fprintf_filtered (stream, "No catches.\n"); | |
1396 | } | |
1397 | } | |
1398 | ||
1399 | /* ARGSUSED */ | |
1400 | void | |
fba45db2 | 1401 | locals_info (char *args, int from_tty) |
c906108c SS |
1402 | { |
1403 | if (!selected_frame) | |
1404 | error ("No frame selected."); | |
1405 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1406 | } | |
1407 | ||
1408 | static void | |
fba45db2 | 1409 | catch_info (char *ignore, int from_tty) |
c906108c | 1410 | { |
c5aa993b | 1411 | struct symtab_and_line *sal; |
c906108c | 1412 | |
c5aa993b | 1413 | /* Check for target support for exception handling */ |
c906108c SS |
1414 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1415 | if (sal) | |
1416 | { | |
1417 | /* Currently not handling this */ | |
1418 | /* Ideally, here we should interact with the C++ runtime | |
1419 | system to find the list of active handlers, etc. */ | |
1420 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1421 | #if 0 | |
c5aa993b JM |
1422 | if (!selected_frame) |
1423 | error ("No frame selected."); | |
c906108c SS |
1424 | #endif |
1425 | } | |
1426 | else | |
1427 | { | |
c5aa993b | 1428 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1429 | if (!selected_frame) |
c5aa993b JM |
1430 | error ("No frame selected."); |
1431 | ||
c906108c SS |
1432 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1433 | } | |
1434 | } | |
1435 | ||
1436 | static void | |
fba45db2 KB |
1437 | print_frame_arg_vars (register struct frame_info *fi, |
1438 | register struct ui_file *stream) | |
c906108c SS |
1439 | { |
1440 | struct symbol *func = get_frame_function (fi); | |
1441 | register struct block *b; | |
c906108c SS |
1442 | register int i; |
1443 | register struct symbol *sym, *sym2; | |
1444 | register int values_printed = 0; | |
1445 | ||
1446 | if (func == 0) | |
1447 | { | |
1448 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1449 | return; | |
1450 | } | |
1451 | ||
1452 | b = SYMBOL_BLOCK_VALUE (func); | |
e88c90f2 | 1453 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1454 | { |
c906108c SS |
1455 | switch (SYMBOL_CLASS (sym)) |
1456 | { | |
1457 | case LOC_ARG: | |
1458 | case LOC_LOCAL_ARG: | |
1459 | case LOC_REF_ARG: | |
1460 | case LOC_REGPARM: | |
1461 | case LOC_REGPARM_ADDR: | |
1462 | case LOC_BASEREG_ARG: | |
1463 | values_printed = 1; | |
1464 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1465 | fputs_filtered (" = ", stream); | |
1466 | ||
1467 | /* We have to look up the symbol because arguments can have | |
1468 | two entries (one a parameter, one a local) and the one we | |
1469 | want is the local, which lookup_symbol will find for us. | |
1470 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1471 | small structure and gcc2 when the argument type is float | |
1472 | and it is passed as a double and converted to float by | |
1473 | the prologue (in the latter case the type of the LOC_ARG | |
1474 | symbol is double and the type of the LOC_LOCAL symbol is | |
1475 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1476 | are not combined in symbol-reading. */ | |
1477 | ||
1478 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1479 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1480 | print_variable_value (sym2, fi, stream); |
1481 | fprintf_filtered (stream, "\n"); | |
1482 | break; | |
1483 | ||
1484 | default: | |
1485 | /* Don't worry about things which aren't arguments. */ | |
1486 | break; | |
1487 | } | |
1488 | } | |
c906108c SS |
1489 | if (!values_printed) |
1490 | { | |
1491 | fprintf_filtered (stream, "No arguments.\n"); | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | void | |
fba45db2 | 1496 | args_info (char *ignore, int from_tty) |
c906108c SS |
1497 | { |
1498 | if (!selected_frame) | |
1499 | error ("No frame selected."); | |
1500 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1501 | } | |
1502 | ||
1503 | ||
1504 | static void | |
fba45db2 | 1505 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1506 | { |
c5aa993b JM |
1507 | args_info (ignore, from_tty); |
1508 | locals_info (ignore, from_tty); | |
c906108c | 1509 | } |
c906108c | 1510 | \f |
c5aa993b | 1511 | |
0f7d239c | 1512 | /* Select frame FI (or NULL - to invalidate the current frame). */ |
c906108c SS |
1513 | |
1514 | void | |
0f7d239c | 1515 | select_frame (struct frame_info *fi) |
c906108c SS |
1516 | { |
1517 | register struct symtab *s; | |
1518 | ||
1519 | selected_frame = fi; | |
0f7d239c AC |
1520 | /* NOTE: cagney/2002-05-04: FI can be NULL. This occures when the |
1521 | frame is being invalidated. */ | |
c906108c | 1522 | if (selected_frame_level_changed_hook) |
0f7d239c | 1523 | selected_frame_level_changed_hook (frame_relative_level (fi)); |
c906108c | 1524 | |
bfb3754e KS |
1525 | /* FIXME: kseitz/2002-08-28: It would be nice to call |
1526 | selected_frame_level_changed_event right here, but due to limitations | |
1527 | in the current interfaces, we would end up flooding UIs with events | |
1528 | because select_frame is used extensively internally. | |
1529 | ||
1530 | Once we have frame-parameterized frame (and frame-related) commands, | |
1531 | the event notification can be moved here, since this function will only | |
1532 | be called when the users selected frame is being changed. */ | |
1533 | ||
c906108c SS |
1534 | /* Ensure that symbols for this frame are read in. Also, determine the |
1535 | source language of this frame, and switch to it if desired. */ | |
1536 | if (fi) | |
c5aa993b JM |
1537 | { |
1538 | s = find_pc_symtab (fi->pc); | |
1539 | if (s | |
1540 | && s->language != current_language->la_language | |
1541 | && s->language != language_unknown | |
1542 | && language_mode == language_mode_auto) | |
1543 | { | |
1544 | set_language (s->language); | |
1545 | } | |
c906108c | 1546 | } |
c906108c | 1547 | } |
c906108c | 1548 | \f |
c5aa993b | 1549 | |
0f7d239c AC |
1550 | /* Select frame FI. Also print the stack frame and show the source if |
1551 | this is the tui version. */ | |
bedfa57b AC |
1552 | static void |
1553 | select_and_print_frame (struct frame_info *fi) | |
c906108c | 1554 | { |
0f7d239c | 1555 | select_frame (fi); |
c906108c SS |
1556 | if (fi) |
1557 | { | |
bedfa57b | 1558 | print_stack_frame (fi, frame_relative_level (fi), 1); |
c906108c SS |
1559 | } |
1560 | } | |
c906108c | 1561 | \f |
c906108c | 1562 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1563 | Can return zero under various legitimate circumstances. |
1564 | ||
1565 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1566 | code address within the block returned. We use this to decide | |
1567 | which macros are in scope. */ | |
c906108c SS |
1568 | |
1569 | struct block * | |
ae767bfb | 1570 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1571 | { |
1572 | if (!target_has_stack) | |
1573 | return 0; | |
1574 | ||
1575 | if (!selected_frame) | |
ae767bfb JB |
1576 | return get_current_block (addr_in_block); |
1577 | return get_frame_block (selected_frame, addr_in_block); | |
c906108c SS |
1578 | } |
1579 | ||
1580 | /* Find a frame a certain number of levels away from FRAME. | |
1581 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1582 | Positive means go to earlier frames (up); negative, the reverse. | |
1583 | The int that contains the number of levels is counted toward | |
1584 | zero as the frames for those levels are found. | |
1585 | If the top or bottom frame is reached, that frame is returned, | |
1586 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1587 | how much farther the original request asked to go. */ | |
1588 | ||
1589 | struct frame_info * | |
fba45db2 KB |
1590 | find_relative_frame (register struct frame_info *frame, |
1591 | register int *level_offset_ptr) | |
c906108c SS |
1592 | { |
1593 | register struct frame_info *prev; | |
1594 | register struct frame_info *frame1; | |
1595 | ||
1596 | /* Going up is simple: just do get_prev_frame enough times | |
1597 | or until initial frame is reached. */ | |
1598 | while (*level_offset_ptr > 0) | |
1599 | { | |
1600 | prev = get_prev_frame (frame); | |
1601 | if (prev == 0) | |
1602 | break; | |
1603 | (*level_offset_ptr)--; | |
1604 | frame = prev; | |
1605 | } | |
1606 | /* Going down is just as simple. */ | |
1607 | if (*level_offset_ptr < 0) | |
1608 | { | |
c5aa993b JM |
1609 | while (*level_offset_ptr < 0) |
1610 | { | |
1611 | frame1 = get_next_frame (frame); | |
1612 | if (!frame1) | |
1613 | break; | |
1614 | frame = frame1; | |
1615 | (*level_offset_ptr)++; | |
1616 | } | |
c906108c SS |
1617 | } |
1618 | return frame; | |
1619 | } | |
1620 | ||
1621 | /* The "select_frame" command. With no arg, NOP. | |
1622 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1623 | valid level. Otherwise, treat level_exp as an address expression | |
1624 | and select it. See parse_frame_specification for more info on proper | |
1625 | frame expressions. */ | |
1626 | ||
1627 | /* ARGSUSED */ | |
8b93c638 | 1628 | void |
fba45db2 | 1629 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1630 | { |
1631 | select_frame_command (level_exp, from_tty); | |
1632 | } | |
8926118c | 1633 | |
c906108c | 1634 | static void |
fba45db2 | 1635 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1636 | { |
bfb3754e KS |
1637 | struct frame_info *frame; |
1638 | int level = frame_relative_level (selected_frame); | |
c906108c SS |
1639 | |
1640 | if (!target_has_stack) | |
1641 | error ("No stack."); | |
1642 | ||
1643 | frame = parse_frame_specification (level_exp); | |
1644 | ||
0f7d239c | 1645 | select_frame (frame); |
bfb3754e KS |
1646 | if (level != frame_relative_level (selected_frame)) |
1647 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); | |
c906108c SS |
1648 | } |
1649 | ||
1650 | /* The "frame" command. With no arg, print selected frame briefly. | |
1651 | With arg, behaves like select_frame and then prints the selected | |
1652 | frame. */ | |
1653 | ||
1654 | void | |
fba45db2 | 1655 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1656 | { |
1657 | select_frame_command (level_exp, from_tty); | |
b31da25e AC |
1658 | show_and_print_stack_frame (selected_frame, |
1659 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1660 | } |
1661 | ||
1662 | /* The XDB Compatibility command to print the current frame. */ | |
1663 | ||
7a292a7a | 1664 | static void |
fba45db2 | 1665 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1666 | { |
1667 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1668 | error ("No stack."); |
b31da25e AC |
1669 | print_only_stack_frame (selected_frame, |
1670 | frame_relative_level (selected_frame), 1); | |
7a292a7a | 1671 | } |
c906108c SS |
1672 | |
1673 | /* Select the frame up one or COUNT stack levels | |
1674 | from the previously selected frame, and print it briefly. */ | |
1675 | ||
1676 | /* ARGSUSED */ | |
1677 | static void | |
fba45db2 | 1678 | up_silently_base (char *count_exp) |
c906108c SS |
1679 | { |
1680 | register struct frame_info *fi; | |
1681 | int count = 1, count1; | |
1682 | if (count_exp) | |
bb518678 | 1683 | count = parse_and_eval_long (count_exp); |
c906108c | 1684 | count1 = count; |
c5aa993b | 1685 | |
c906108c SS |
1686 | if (target_has_stack == 0 || selected_frame == 0) |
1687 | error ("No stack."); | |
1688 | ||
1689 | fi = find_relative_frame (selected_frame, &count1); | |
1690 | if (count1 != 0 && count_exp == 0) | |
1691 | error ("Initial frame selected; you cannot go up."); | |
0f7d239c | 1692 | select_frame (fi); |
bfb3754e | 1693 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); |
c906108c SS |
1694 | } |
1695 | ||
1696 | static void | |
fba45db2 | 1697 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1698 | { |
c5aa993b | 1699 | up_silently_base (count_exp); |
c906108c SS |
1700 | } |
1701 | ||
1702 | static void | |
fba45db2 | 1703 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1704 | { |
1705 | up_silently_base (count_exp); | |
b31da25e AC |
1706 | show_and_print_stack_frame (selected_frame, |
1707 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1708 | } |
1709 | ||
1710 | /* Select the frame down one or COUNT stack levels | |
1711 | from the previously selected frame, and print it briefly. */ | |
1712 | ||
1713 | /* ARGSUSED */ | |
1714 | static void | |
fba45db2 | 1715 | down_silently_base (char *count_exp) |
c906108c SS |
1716 | { |
1717 | register struct frame_info *frame; | |
1718 | int count = -1, count1; | |
1719 | if (count_exp) | |
bb518678 | 1720 | count = -parse_and_eval_long (count_exp); |
c906108c | 1721 | count1 = count; |
c5aa993b | 1722 | |
c906108c SS |
1723 | if (target_has_stack == 0 || selected_frame == 0) |
1724 | error ("No stack."); | |
1725 | ||
1726 | frame = find_relative_frame (selected_frame, &count1); | |
1727 | if (count1 != 0 && count_exp == 0) | |
1728 | { | |
1729 | ||
1730 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1731 | means to really go down (and let me know if that is |
1732 | impossible), but "down 9999" can be used to mean go all the way | |
1733 | down without getting an error. */ | |
c906108c SS |
1734 | |
1735 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1736 | } | |
1737 | ||
0f7d239c | 1738 | select_frame (frame); |
bfb3754e | 1739 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); |
c906108c SS |
1740 | } |
1741 | ||
1742 | /* ARGSUSED */ | |
1743 | static void | |
fba45db2 | 1744 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1745 | { |
1746 | down_silently_base (count_exp); | |
c906108c SS |
1747 | } |
1748 | ||
1749 | static void | |
fba45db2 | 1750 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1751 | { |
1752 | down_silently_base (count_exp); | |
b31da25e AC |
1753 | show_and_print_stack_frame (selected_frame, |
1754 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1755 | } |
1756 | \f | |
8b93c638 | 1757 | void |
fba45db2 | 1758 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1759 | { |
1760 | struct symbol *thisfun; | |
1761 | CORE_ADDR selected_frame_addr; | |
1762 | CORE_ADDR selected_frame_pc; | |
1763 | struct frame_info *frame; | |
3d6d86c6 | 1764 | struct value *return_value = NULL; |
c906108c SS |
1765 | |
1766 | if (selected_frame == NULL) | |
1767 | error ("No selected frame."); | |
1768 | thisfun = get_frame_function (selected_frame); | |
1769 | selected_frame_addr = FRAME_FP (selected_frame); | |
1770 | selected_frame_pc = selected_frame->pc; | |
1771 | ||
1772 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1773 | ||
1774 | if (retval_exp) | |
1775 | { | |
1776 | struct type *return_type = NULL; | |
1777 | ||
1778 | return_value = parse_and_eval (retval_exp); | |
1779 | ||
1780 | /* Cast return value to the return type of the function. */ | |
1781 | if (thisfun != NULL) | |
1782 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1783 | if (return_type == NULL) | |
1784 | return_type = builtin_type_int; | |
1785 | return_value = value_cast (return_type, return_value); | |
1786 | ||
1787 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1788 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1789 | if (VALUE_LAZY (return_value)) |
1790 | value_fetch_lazy (return_value); | |
1791 | } | |
1792 | ||
1793 | /* If interactive, require confirmation. */ | |
1794 | ||
1795 | if (from_tty) | |
1796 | { | |
1797 | if (thisfun != 0) | |
1798 | { | |
1799 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1800 | { | |
1801 | error ("Not confirmed."); | |
1802 | /* NOTREACHED */ | |
1803 | } | |
1804 | } | |
c5aa993b JM |
1805 | else if (!query ("Make selected stack frame return now? ")) |
1806 | error ("Not confirmed."); | |
c906108c SS |
1807 | } |
1808 | ||
1809 | /* Do the real work. Pop until the specified frame is current. We | |
1810 | use this method because the selected_frame is not valid after | |
1811 | a POP_FRAME. The pc comparison makes this work even if the | |
1812 | selected frame shares its fp with another frame. */ | |
1813 | ||
c5aa993b | 1814 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1815 | || selected_frame_pc != frame->pc) |
1816 | POP_FRAME; | |
1817 | ||
1818 | /* Then pop that frame. */ | |
1819 | ||
1820 | POP_FRAME; | |
1821 | ||
1822 | /* Compute the return value (if any) and store in the place | |
1823 | for return values. */ | |
1824 | ||
1825 | if (retval_exp) | |
1826 | set_return_value (return_value); | |
1827 | ||
1a2aab69 PS |
1828 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1829 | ||
1830 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
1831 | FRAME_FP (get_current_frame ()))) | |
1832 | POP_FRAME; | |
1833 | ||
c906108c SS |
1834 | /* If interactive, print the frame that is now current. */ |
1835 | ||
1836 | if (from_tty) | |
1837 | frame_command ("0", 1); | |
1838 | else | |
1839 | select_frame_command ("0", 0); | |
1840 | } | |
1841 | ||
1842 | /* Sets the scope to input function name, provided that the | |
1843 | function is within the current stack frame */ | |
1844 | ||
1845 | struct function_bounds | |
1846 | { | |
1847 | CORE_ADDR low, high; | |
1848 | }; | |
1849 | ||
a14ed312 | 1850 | static void func_command (char *arg, int from_tty); |
c906108c | 1851 | static void |
fba45db2 | 1852 | func_command (char *arg, int from_tty) |
c906108c SS |
1853 | { |
1854 | struct frame_info *fp; | |
1855 | int found = 0; | |
1856 | struct symtabs_and_lines sals; | |
1857 | int i; | |
1858 | int level = 1; | |
1859 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1860 | ||
1861 | if (arg != (char *) NULL) | |
1862 | return; | |
1863 | ||
1864 | fp = parse_frame_specification ("0"); | |
1865 | sals = decode_line_spec (arg, 1); | |
1866 | func_bounds = (struct function_bounds *) xmalloc ( | |
1867 | sizeof (struct function_bounds) * sals.nelts); | |
1868 | for (i = 0; (i < sals.nelts && !found); i++) | |
1869 | { | |
1870 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1871 | find_pc_partial_function (sals.sals[i].pc, | |
1872 | (char **) NULL, | |
1873 | &func_bounds[i].low, | |
1874 | &func_bounds[i].high) == 0) | |
1875 | { | |
1876 | func_bounds[i].low = | |
1877 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1878 | } | |
1879 | } | |
1880 | ||
1881 | do | |
1882 | { | |
1883 | for (i = 0; (i < sals.nelts && !found); i++) | |
1884 | found = (fp->pc >= func_bounds[i].low && | |
1885 | fp->pc < func_bounds[i].high); | |
1886 | if (!found) | |
1887 | { | |
1888 | level = 1; | |
1889 | fp = find_relative_frame (fp, &level); | |
1890 | } | |
1891 | } | |
1892 | while (!found && level == 0); | |
1893 | ||
1894 | if (func_bounds) | |
b8c9b27d | 1895 | xfree (func_bounds); |
c906108c SS |
1896 | |
1897 | if (!found) | |
1898 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1899 | else if (fp != selected_frame) | |
bedfa57b | 1900 | select_and_print_frame (fp); |
c906108c SS |
1901 | } |
1902 | ||
1903 | /* Gets the language of the current frame. */ | |
1904 | ||
1905 | enum language | |
fba45db2 | 1906 | get_frame_language (void) |
c906108c SS |
1907 | { |
1908 | register struct symtab *s; | |
1909 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1910 | |
c906108c SS |
1911 | if (selected_frame) |
1912 | { | |
c5aa993b | 1913 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1914 | if (s) |
1915 | flang = s->language; | |
1916 | else | |
1917 | flang = language_unknown; | |
1918 | } | |
1919 | else | |
1920 | flang = language_unknown; | |
1921 | ||
1922 | return flang; | |
1923 | } | |
1924 | \f | |
1925 | void | |
fba45db2 | 1926 | _initialize_stack (void) |
c906108c | 1927 | { |
c5aa993b | 1928 | #if 0 |
c906108c SS |
1929 | backtrace_limit = 30; |
1930 | #endif | |
1931 | ||
1932 | add_com ("return", class_stack, return_command, | |
1933 | "Make selected stack frame return to its caller.\n\ | |
1934 | Control remains in the debugger, but when you continue\n\ | |
1935 | execution will resume in the frame above the one now selected.\n\ | |
1936 | If an argument is given, it is an expression for the value to return."); | |
1937 | ||
1938 | add_com ("up", class_stack, up_command, | |
1939 | "Select and print stack frame that called this one.\n\ | |
1940 | An argument says how many frames up to go."); | |
1941 | add_com ("up-silently", class_support, up_silently_command, | |
1942 | "Same as the `up' command, but does not print anything.\n\ | |
1943 | This is useful in command scripts."); | |
1944 | ||
1945 | add_com ("down", class_stack, down_command, | |
1946 | "Select and print stack frame called by this one.\n\ | |
1947 | An argument says how many frames down to go."); | |
1948 | add_com_alias ("do", "down", class_stack, 1); | |
1949 | add_com_alias ("dow", "down", class_stack, 1); | |
1950 | add_com ("down-silently", class_support, down_silently_command, | |
1951 | "Same as the `down' command, but does not print anything.\n\ | |
1952 | This is useful in command scripts."); | |
1953 | ||
1954 | add_com ("frame", class_stack, frame_command, | |
1955 | "Select and print a stack frame.\n\ | |
1956 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1957 | An argument specifies the frame to select.\n\ | |
1958 | It can be a stack frame number or the address of the frame.\n\ | |
1959 | With argument, nothing is printed if input is coming from\n\ | |
1960 | a command file or a user-defined command."); | |
1961 | ||
1962 | add_com_alias ("f", "frame", class_stack, 1); | |
1963 | ||
1964 | if (xdb_commands) | |
1965 | { | |
c5aa993b JM |
1966 | add_com ("L", class_stack, current_frame_command, |
1967 | "Print the current stack frame.\n"); | |
c906108c SS |
1968 | add_com_alias ("V", "frame", class_stack, 1); |
1969 | } | |
1970 | add_com ("select-frame", class_stack, select_frame_command, | |
1971 | "Select a stack frame without printing anything.\n\ | |
1972 | An argument specifies the frame to select.\n\ | |
1973 | It can be a stack frame number or the address of the frame.\n"); | |
1974 | ||
1975 | add_com ("backtrace", class_stack, backtrace_command, | |
1976 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1977 | With a negative argument, print outermost -COUNT frames.\n\ | |
1978 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1979 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1980 | if (xdb_commands) | |
1981 | { | |
1982 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1983 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1984 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1985 | and the values of the local variables.\n\ |
1986 | With a negative argument, print outermost -COUNT frames.\n\ | |
1987 | Usage: T <count>\n"); | |
1988 | } | |
1989 | ||
1990 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1991 | add_info ("stack", backtrace_command, | |
1992 | "Backtrace of the stack, or innermost COUNT frames."); | |
1993 | add_info_alias ("s", "stack", 1); | |
1994 | add_info ("frame", frame_info, | |
1995 | "All about selected stack frame, or frame at ADDR."); | |
1996 | add_info_alias ("f", "frame", 1); | |
1997 | add_info ("locals", locals_info, | |
1998 | "Local variables of current stack frame."); | |
1999 | add_info ("args", args_info, | |
2000 | "Argument variables of current stack frame."); | |
2001 | if (xdb_commands) | |
c5aa993b JM |
2002 | add_com ("l", class_info, args_plus_locals_info, |
2003 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2004 | |
2005 | if (dbx_commands) | |
c5aa993b JM |
2006 | add_com ("func", class_stack, func_command, |
2007 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2008 | |
2009 | add_info ("catch", catch_info, | |
2010 | "Exceptions that can be caught in the current stack frame."); | |
2011 | ||
2012 | #if 0 | |
c5aa993b JM |
2013 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2014 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2015 | &setlist); |
2016 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2017 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2018 | #endif |
2019 | } |