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 | ||
c906108c SS |
118 | /* Zero means do things normally; we are interacting directly with the |
119 | user. One means print the full filename and linenumber when a | |
120 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
121 | parse. Two means print similar annotations, but in many more | |
122 | cases and in a slightly different syntax. */ | |
123 | ||
124 | int annotation_level = 0; | |
c906108c | 125 | \f |
c5aa993b JM |
126 | |
127 | struct print_stack_frame_args | |
128 | { | |
129 | struct frame_info *fi; | |
130 | int level; | |
131 | int source; | |
132 | int args; | |
133 | }; | |
c906108c | 134 | |
a14ed312 | 135 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
136 | |
137 | /* Show and print the frame arguments. | |
138 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 139 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 140 | static int |
fba45db2 | 141 | show_and_print_stack_frame_stub (void *args) |
c906108c | 142 | { |
c5aa993b | 143 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 144 | |
c906108c SS |
145 | print_frame_info (p->fi, p->level, p->source, p->args); |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | /* Show or print the frame arguments. | |
151 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 152 | static int print_stack_frame_stub (void *args); |
c906108c | 153 | static int |
fba45db2 | 154 | print_stack_frame_stub (void *args) |
c906108c | 155 | { |
c5aa993b | 156 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 157 | |
37767e42 | 158 | print_frame_info_base (p->fi, p->level, p->source, p->args); |
c906108c SS |
159 | return 0; |
160 | } | |
161 | ||
162 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
163 | and LEVEL should be its level in the stack (or -1 for level not | |
164 | defined). */ | |
165 | ||
166 | /* Pass the args the way catch_errors wants them. */ | |
167 | static int | |
fba45db2 | 168 | print_stack_frame_base_stub (char *args) |
c906108c | 169 | { |
c5aa993b | 170 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
171 | |
172 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
173 | return 0; | |
174 | } | |
175 | ||
176 | /* print the frame arguments to the terminal. | |
177 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 178 | static int print_only_stack_frame_stub (void *); |
c906108c | 179 | static int |
fba45db2 | 180 | print_only_stack_frame_stub (void *args) |
c906108c | 181 | { |
c5aa993b | 182 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
183 | |
184 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
185 | return 0; | |
186 | } | |
187 | ||
188 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
189 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
190 | This prints the level, the function executing, the arguments, | |
191 | and the file name and line number. | |
192 | If the pc is not at the beginning of the source line, | |
193 | the actual pc is printed at the beginning. | |
194 | ||
195 | If SOURCE is 1, print the source line as well. | |
196 | If SOURCE is -1, print ONLY the source line. */ | |
197 | ||
198 | static void | |
fba45db2 | 199 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
200 | { |
201 | struct print_stack_frame_args args; | |
202 | ||
203 | args.fi = fi; | |
204 | args.level = level; | |
205 | args.source = source; | |
206 | args.args = 1; | |
207 | ||
7a292a7a | 208 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
209 | } |
210 | ||
211 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
212 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
213 | This prints the level, the function executing, the arguments, | |
214 | and the file name and line number. | |
215 | If the pc is not at the beginning of the source line, | |
216 | the actual pc is printed at the beginning. | |
217 | ||
218 | If SOURCE is 1, print the source line as well. | |
219 | If SOURCE is -1, print ONLY the source line. */ | |
220 | ||
221 | void | |
fba45db2 | 222 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
223 | { |
224 | struct print_stack_frame_args args; | |
225 | ||
226 | args.fi = fi; | |
227 | args.level = level; | |
228 | args.source = source; | |
229 | args.args = 1; | |
230 | ||
7a292a7a | 231 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
232 | } |
233 | ||
234 | ||
235 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
236 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
237 | This prints the level, the function executing, the arguments, | |
238 | and the file name and line number. | |
239 | If the pc is not at the beginning of the source line, | |
240 | the actual pc is printed at the beginning. | |
241 | ||
242 | If SOURCE is 1, print the source line as well. | |
243 | If SOURCE is -1, print ONLY the source line. */ | |
244 | ||
245 | void | |
fba45db2 | 246 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
247 | { |
248 | struct print_stack_frame_args args; | |
249 | ||
250 | args.fi = fi; | |
251 | args.level = level; | |
252 | args.source = source; | |
253 | args.args = 1; | |
254 | ||
c5aa993b | 255 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
256 | } |
257 | ||
258 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
259 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
260 | This prints the level, the function executing, the arguments, | |
261 | and the file name and line number. | |
262 | If the pc is not at the beginning of the source line, | |
263 | the actual pc is printed at the beginning. | |
264 | ||
265 | If SOURCE is 1, print the source line as well. | |
266 | If SOURCE is -1, print ONLY the source line. */ | |
267 | ||
268 | void | |
fba45db2 | 269 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
270 | { |
271 | struct print_stack_frame_args args; | |
272 | ||
273 | args.fi = fi; | |
274 | args.level = level; | |
275 | args.source = source; | |
276 | args.args = 1; | |
277 | ||
7a292a7a | 278 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
279 | } |
280 | ||
c5aa993b JM |
281 | struct print_args_args |
282 | { | |
c906108c SS |
283 | struct symbol *func; |
284 | struct frame_info *fi; | |
d9fcf2fb | 285 | struct ui_file *stream; |
c906108c SS |
286 | }; |
287 | ||
a14ed312 | 288 | static int print_args_stub (PTR); |
c906108c SS |
289 | |
290 | /* Pass the args the way catch_errors wants them. */ | |
291 | ||
292 | static int | |
fba45db2 | 293 | print_args_stub (PTR args) |
c906108c SS |
294 | { |
295 | int numargs; | |
c5aa993b | 296 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 297 | |
392a587b | 298 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 299 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
300 | return 0; |
301 | } | |
302 | ||
303 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
304 | Used in "where" output, also used to emit breakpoint or step |
305 | messages. | |
306 | LEVEL is the level of the frame, or -1 if it is the | |
307 | innermost frame but we don't want to print the level. | |
308 | The meaning of the SOURCE argument is: | |
309 | SRC_LINE: Print only source line | |
310 | LOCATION: Print only location | |
311 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
312 | |
313 | static void | |
fba45db2 | 314 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
315 | { |
316 | struct symtab_and_line sal; | |
c5394b80 JM |
317 | int source_print; |
318 | int location_print; | |
c906108c | 319 | |
0225421b | 320 | if (get_frame_type (fi) == DUMMY_FRAME) |
c906108c SS |
321 | { |
322 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
323 | ||
324 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 325 | to list for this frame. */ |
c906108c | 326 | if (level >= 0) |
52c6a6ac JJ |
327 | { |
328 | ui_out_text (uiout, "#"); | |
329 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); | |
330 | } | |
c906108c SS |
331 | annotate_function_call (); |
332 | printf_filtered ("<function called from gdb>\n"); | |
333 | annotate_frame_end (); | |
334 | return; | |
335 | } | |
5a203e44 | 336 | if ((get_frame_type (fi) == SIGTRAMP_FRAME)) |
c906108c SS |
337 | { |
338 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
339 | ||
340 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 341 | to list for this frame. */ |
c906108c | 342 | if (level >= 0) |
52c6a6ac JJ |
343 | { |
344 | ui_out_text (uiout, "#"); | |
345 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); | |
346 | } | |
c906108c SS |
347 | annotate_signal_handler_caller (); |
348 | printf_filtered ("<signal handler called>\n"); | |
349 | annotate_frame_end (); | |
350 | return; | |
351 | } | |
352 | ||
353 | /* If fi is not the innermost frame, that normally means that fi->pc | |
5a203e44 AC |
354 | points to *after* the call instruction, and we want to get the |
355 | line containing the call, never the next line. But if the next | |
356 | frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the next frame | |
357 | was not entered as the result of a call, and we want to get the | |
358 | line containing fi->pc. */ | |
c906108c SS |
359 | sal = |
360 | find_pc_line (fi->pc, | |
361 | fi->next != NULL | |
5a203e44 | 362 | && !(get_frame_type (fi->next) == SIGTRAMP_FRAME) |
0225421b | 363 | && !(get_frame_type (fi->next) == DUMMY_FRAME)); |
c906108c | 364 | |
c5394b80 JM |
365 | location_print = (source == LOCATION |
366 | || source == LOC_AND_ADDRESS | |
367 | || source == SRC_AND_LOC); | |
368 | ||
369 | if (location_print || !sal.symtab) | |
370 | print_frame (fi, level, source, args, sal); | |
371 | ||
372 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
0378c332 | 373 | |
66609862 | 374 | if (sal.symtab) |
0378c332 | 375 | set_current_source_symtab_and_line (&sal); |
c5394b80 JM |
376 | |
377 | if (source_print && sal.symtab) | |
378 | { | |
0378c332 | 379 | struct symtab_and_line cursal; |
c5394b80 JM |
380 | int done = 0; |
381 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
382 | ||
383 | if (annotation_level) | |
384 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
385 | fi->pc); | |
386 | if (!done) | |
387 | { | |
ba4bbdcb | 388 | if (print_frame_info_listing_hook) |
66609862 | 389 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); |
ba4bbdcb | 390 | else |
c5394b80 | 391 | { |
ba4bbdcb KS |
392 | /* We used to do this earlier, but that is clearly |
393 | wrong. This function is used by many different | |
394 | parts of gdb, including normal_stop in infrun.c, | |
395 | which uses this to print out the current PC | |
396 | when we stepi/nexti into the middle of a source | |
397 | line. Only the command line really wants this | |
398 | behavior. Other UIs probably would like the | |
399 | ability to decide for themselves if it is desired. */ | |
400 | if (addressprint && mid_statement) | |
401 | { | |
ba4bbdcb KS |
402 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
403 | ui_out_text (uiout, "\t"); | |
ba4bbdcb KS |
404 | } |
405 | ||
406 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 407 | } |
c5394b80 | 408 | } |
53cb0458 FN |
409 | /* Make sure we have at least a default source file */ |
410 | set_default_source_symtab_and_line (); | |
411 | cursal = get_current_source_symtab_and_line (); | |
0378c332 FN |
412 | cursal.line = max (sal.line - get_lines_to_list () / 2, 1); |
413 | set_current_source_symtab_and_line (&cursal); | |
c5394b80 JM |
414 | } |
415 | ||
416 | if (source != 0) | |
417 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
418 | ||
419 | annotate_frame_end (); | |
420 | ||
421 | gdb_flush (gdb_stdout); | |
422 | } | |
423 | ||
424 | static void | |
425 | print_frame (struct frame_info *fi, | |
426 | int level, | |
427 | int source, | |
428 | int args, | |
429 | struct symtab_and_line sal) | |
430 | { | |
431 | struct symbol *func; | |
432 | register char *funname = 0; | |
433 | enum language funlang = language_unknown; | |
8b93c638 JM |
434 | struct ui_stream *stb; |
435 | struct cleanup *old_chain; | |
e6e0bfab | 436 | struct cleanup *list_chain; |
8b93c638 JM |
437 | |
438 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 439 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c5394b80 | 440 | |
6f0eaa01 | 441 | func = find_pc_function (frame_address_in_block (fi)); |
c906108c SS |
442 | if (func) |
443 | { | |
444 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
445 | function (when we are in the first function in a file which |
446 | is compiled without debugging symbols, the previous function | |
447 | is compiled with debugging symbols, and the "foo.o" symbol | |
448 | that is supposed to tell us where the file with debugging symbols | |
449 | ends has been truncated by ar because it is longer than 15 | |
450 | characters). This also occurs if the user uses asm() to create | |
451 | a function but not stabs for it (in a file compiled -g). | |
452 | ||
453 | So look in the minimal symbol tables as well, and if it comes | |
454 | up with a larger address for the function use that instead. | |
455 | I don't think this can ever cause any problems; there shouldn't | |
456 | be any minimal symbols in the middle of a function; if this is | |
457 | ever changed many parts of GDB will need to be changed (and we'll | |
458 | create a find_pc_minimal_function or some such). */ | |
c906108c | 459 | |
6f0eaa01 | 460 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c | 461 | if (msymbol != NULL |
c5aa993b | 462 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
463 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
464 | { | |
465 | #if 0 | |
466 | /* There is no particular reason to think the line number | |
467 | information is wrong. Someone might have just put in | |
468 | a label with asm() but left the line numbers alone. */ | |
469 | /* In this case we have no way of knowing the source file | |
470 | and line number, so don't print them. */ | |
471 | sal.symtab = 0; | |
472 | #endif | |
473 | /* We also don't know anything about the function besides | |
474 | its address and name. */ | |
475 | func = 0; | |
476 | funname = SYMBOL_NAME (msymbol); | |
477 | funlang = SYMBOL_LANGUAGE (msymbol); | |
478 | } | |
479 | else | |
480 | { | |
c5394b80 JM |
481 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
482 | demangled name that we already have stored in the symbol | |
483 | table, but we stored a version with DMGL_PARAMS turned | |
484 | on, and here we don't want to display parameters. So call | |
485 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
486 | that printf_symbol_filtered() will again try to demangle | |
487 | the name on the fly, but the issue is that if | |
488 | cplus_demangle() fails here, it'll fail there too. So we | |
489 | want to catch the failure ("demangled==NULL" case below) | |
490 | here, while we still have our hands on the function | |
491 | symbol.) */ | |
c5aa993b | 492 | char *demangled; |
c906108c SS |
493 | funname = SYMBOL_NAME (func); |
494 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
495 | if (funlang == language_cplus) |
496 | { | |
497 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
498 | if (demangled == NULL) | |
c5394b80 JM |
499 | /* If the demangler fails, try the demangled name from |
500 | the symbol table. This'll have parameters, but | |
501 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
502 | funname = SYMBOL_SOURCE_NAME (func); |
503 | } | |
c906108c SS |
504 | } |
505 | } | |
506 | else | |
507 | { | |
6f0eaa01 | 508 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c SS |
509 | if (msymbol != NULL) |
510 | { | |
511 | funname = SYMBOL_NAME (msymbol); | |
512 | funlang = SYMBOL_LANGUAGE (msymbol); | |
513 | } | |
514 | } | |
515 | ||
c5394b80 JM |
516 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
517 | ||
666547aa | 518 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 JM |
519 | |
520 | if (level >= 0) | |
8b93c638 | 521 | { |
8b93c638 | 522 | ui_out_text (uiout, "#"); |
52c6a6ac | 523 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); |
8b93c638 | 524 | } |
c5394b80 JM |
525 | if (addressprint) |
526 | if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS) | |
527 | { | |
528 | annotate_frame_address (); | |
8b93c638 JM |
529 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
530 | annotate_frame_address_end (); | |
531 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
532 | } |
533 | annotate_frame_function_name (); | |
8b93c638 JM |
534 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, |
535 | DMGL_ANSI); | |
536 | ui_out_field_stream (uiout, "func", stb); | |
537 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
538 | annotate_frame_args (); |
539 | ||
8b93c638 | 540 | ui_out_text (uiout, " ("); |
c5394b80 | 541 | if (args) |
c906108c | 542 | { |
c5394b80 | 543 | struct print_args_args args; |
d493eb33 | 544 | struct cleanup *args_list_chain; |
c5394b80 JM |
545 | args.fi = fi; |
546 | args.func = func; | |
547 | args.stream = gdb_stdout; | |
68c81b54 | 548 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 549 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
550 | /* FIXME: args must be a list. If one argument is a string it will |
551 | have " that will not be properly escaped. */ | |
666547aa | 552 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 553 | do_cleanups (args_list_chain); |
c5394b80 JM |
554 | QUIT; |
555 | } | |
8b93c638 | 556 | ui_out_text (uiout, ")"); |
c5394b80 JM |
557 | if (sal.symtab && sal.symtab->filename) |
558 | { | |
559 | annotate_frame_source_begin (); | |
8b93c638 JM |
560 | ui_out_wrap_hint (uiout, " "); |
561 | ui_out_text (uiout, " at "); | |
562 | annotate_frame_source_file (); | |
563 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
564 | annotate_frame_source_file_end (); | |
565 | ui_out_text (uiout, ":"); | |
566 | annotate_frame_source_line (); | |
567 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
568 | annotate_frame_source_end (); |
569 | } | |
c906108c | 570 | |
c5394b80 JM |
571 | #ifdef PC_SOLIB |
572 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 573 | { |
c5394b80 JM |
574 | char *lib = PC_SOLIB (fi->pc); |
575 | if (lib) | |
c906108c | 576 | { |
c5394b80 | 577 | annotate_frame_where (); |
8b93c638 JM |
578 | ui_out_wrap_hint (uiout, " "); |
579 | ui_out_text (uiout, " from "); | |
580 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 581 | } |
c906108c | 582 | } |
c5394b80 | 583 | #endif /* PC_SOLIB */ |
e514a9d6 | 584 | |
666547aa | 585 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 586 | do_cleanups (list_chain); |
8b93c638 JM |
587 | ui_out_text (uiout, "\n"); |
588 | do_cleanups (old_chain); | |
c906108c SS |
589 | } |
590 | \f | |
591 | ||
c906108c SS |
592 | /* Show or print the frame info. If this is the tui, it will be shown in |
593 | the source display */ | |
594 | void | |
fba45db2 KB |
595 | print_frame_info (struct frame_info *fi, register int level, int source, |
596 | int args) | |
c906108c | 597 | { |
37767e42 | 598 | print_frame_info_base (fi, level, source, args); |
c906108c SS |
599 | } |
600 | ||
601 | /* Show the frame info. If this is the tui, it will be shown in | |
602 | the source display otherwise, nothing is done */ | |
603 | void | |
fba45db2 | 604 | show_stack_frame (struct frame_info *fi) |
c906108c | 605 | { |
c906108c | 606 | } |
c906108c | 607 | \f |
c5aa993b | 608 | |
c906108c SS |
609 | /* Read a frame specification in whatever the appropriate format is. |
610 | Call error() if the specification is in any way invalid (i.e. | |
611 | this function never returns NULL). */ | |
612 | ||
613 | struct frame_info * | |
fba45db2 | 614 | parse_frame_specification (char *frame_exp) |
c906108c SS |
615 | { |
616 | int numargs = 0; | |
617 | #define MAXARGS 4 | |
618 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 619 | int level; |
c5aa993b | 620 | |
c906108c SS |
621 | if (frame_exp) |
622 | { | |
623 | char *addr_string, *p; | |
624 | struct cleanup *tmp_cleanup; | |
625 | ||
c5aa993b JM |
626 | while (*frame_exp == ' ') |
627 | frame_exp++; | |
c906108c SS |
628 | |
629 | while (*frame_exp) | |
630 | { | |
631 | if (numargs > MAXARGS) | |
632 | error ("Too many args in frame specification"); | |
633 | /* Parse an argument. */ | |
c5aa993b | 634 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 635 | ; |
c5aa993b | 636 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
637 | |
638 | { | |
3d6d86c6 | 639 | struct value *vp; |
ec9a3449 | 640 | |
b8c9b27d | 641 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 642 | |
24285e3a | 643 | /* NOTE: we call parse_and_eval and then both |
1aa20aa8 | 644 | value_as_long and value_as_address rather than calling |
24285e3a DT |
645 | parse_and_eval_long and parse_and_eval_address because |
646 | of the issue of potential side effects from evaluating | |
647 | the expression. */ | |
ec9a3449 DT |
648 | vp = parse_and_eval (addr_string); |
649 | if (numargs == 0) | |
650 | level = value_as_long (vp); | |
651 | ||
1aa20aa8 | 652 | args[numargs++] = value_as_address (vp); |
c906108c SS |
653 | do_cleanups (tmp_cleanup); |
654 | } | |
655 | ||
656 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
657 | while (*p == ' ') |
658 | p++; | |
c906108c SS |
659 | frame_exp = p; |
660 | } | |
661 | } | |
662 | ||
663 | switch (numargs) | |
664 | { | |
665 | case 0: | |
666 | if (selected_frame == NULL) | |
667 | error ("No selected frame."); | |
668 | return selected_frame; | |
669 | /* NOTREACHED */ | |
670 | case 1: | |
671 | { | |
c906108c | 672 | struct frame_info *fid = |
c5aa993b | 673 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
674 | struct frame_info *tfid; |
675 | ||
676 | if (level == 0) | |
677 | /* find_relative_frame was successful */ | |
678 | return fid; | |
679 | ||
680 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
681 | take at least 2 addresses. It is important to detect this case | |
682 | here so that "frame 100" does not give a confusing error message | |
683 | like "frame specification requires two addresses". This of course | |
684 | does not solve the "frame 100" problem for machines on which | |
685 | a frame specification can be made with one address. To solve | |
686 | that, we need a new syntax for a specifying a frame by address. | |
687 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
688 | two args, etc.), but people might think that is too much typing, | |
689 | so I guess *0x23,0x45 would be a possible alternative (commas | |
690 | really should be used instead of spaces to delimit; using spaces | |
691 | normally works in an expression). */ | |
692 | #ifdef SETUP_ARBITRARY_FRAME | |
823ca731 | 693 | error ("No frame %s", paddr_d (args[0])); |
c906108c SS |
694 | #endif |
695 | ||
696 | /* If (s)he specifies the frame with an address, he deserves what | |
697 | (s)he gets. Still, give the highest one that matches. */ | |
698 | ||
699 | for (fid = get_current_frame (); | |
700 | fid && fid->frame != args[0]; | |
701 | fid = get_prev_frame (fid)) | |
702 | ; | |
703 | ||
704 | if (fid) | |
705 | while ((tfid = get_prev_frame (fid)) && | |
706 | (tfid->frame == args[0])) | |
707 | fid = tfid; | |
c5aa993b | 708 | |
c906108c SS |
709 | /* We couldn't identify the frame as an existing frame, but |
710 | perhaps we can create one with a single argument. */ | |
711 | } | |
712 | ||
c5aa993b | 713 | default: |
c906108c SS |
714 | #ifdef SETUP_ARBITRARY_FRAME |
715 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
716 | #else | |
717 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 718 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
719 | if (numargs == 1) |
720 | return create_new_frame (args[0], 0); | |
721 | error ("Too many args in frame specification"); | |
722 | #endif | |
723 | /* NOTREACHED */ | |
724 | } | |
725 | /* NOTREACHED */ | |
726 | } | |
727 | ||
728 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
729 | that if it is unsure about the answer, it returns 0 | |
730 | instead of guessing (this happens on the VAX and i960, for example). | |
731 | ||
732 | On most machines, we never have to guess about the args address, | |
733 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
734 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
735 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
736 | #endif | |
737 | ||
738 | /* Print verbosely the selected frame or the frame at address ADDR. | |
739 | This means absolutely all information in the frame is printed. */ | |
740 | ||
741 | static void | |
fba45db2 | 742 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
743 | { |
744 | struct frame_info *fi; | |
745 | struct symtab_and_line sal; | |
746 | struct symbol *func; | |
747 | struct symtab *s; | |
748 | struct frame_info *calling_frame_info; | |
749 | int i, count, numregs; | |
750 | char *funname = 0; | |
751 | enum language funlang = language_unknown; | |
752 | ||
753 | if (!target_has_stack) | |
754 | error ("No stack."); | |
755 | ||
756 | fi = parse_frame_specification (addr_exp); | |
757 | if (fi == NULL) | |
758 | error ("Invalid frame specified."); | |
759 | ||
760 | sal = find_pc_line (fi->pc, | |
761 | fi->next != NULL | |
5a203e44 | 762 | && !(get_frame_type (fi->next) == SIGTRAMP_FRAME) |
0225421b | 763 | && !(get_frame_type (fi->next) == DUMMY_FRAME)); |
c906108c | 764 | func = get_frame_function (fi); |
c5aa993b | 765 | s = find_pc_symtab (fi->pc); |
c906108c SS |
766 | if (func) |
767 | { | |
768 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
769 | * the demangled name that we already have stored in | |
770 | * the symbol table, but we stored a version with | |
771 | * DMGL_PARAMS turned on, and here we don't want | |
772 | * to display parameters. So call the demangler again, | |
773 | * with DMGL_ANSI only. RT | |
774 | * (Yes, I know that printf_symbol_filtered() will | |
775 | * again try to demangle the name on the fly, but | |
776 | * the issue is that if cplus_demangle() fails here, | |
777 | * it'll fail there too. So we want to catch the failure | |
778 | * ("demangled==NULL" case below) here, while we still | |
779 | * have our hands on the function symbol.) | |
780 | */ | |
c5aa993b JM |
781 | char *demangled; |
782 | funname = SYMBOL_NAME (func); | |
783 | funlang = SYMBOL_LANGUAGE (func); | |
784 | if (funlang == language_cplus) | |
785 | { | |
786 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
787 | /* If the demangler fails, try the demangled name | |
788 | * from the symbol table. This'll have parameters, | |
789 | * but that's preferable to diplaying a mangled name. | |
790 | */ | |
791 | if (demangled == NULL) | |
792 | funname = SYMBOL_SOURCE_NAME (func); | |
793 | } | |
c906108c SS |
794 | } |
795 | else | |
796 | { | |
797 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
798 | if (msymbol != NULL) | |
799 | { | |
800 | funname = SYMBOL_NAME (msymbol); | |
801 | funlang = SYMBOL_LANGUAGE (msymbol); | |
802 | } | |
803 | } | |
804 | calling_frame_info = get_prev_frame (fi); | |
805 | ||
b31da25e | 806 | if (!addr_exp && frame_relative_level (selected_frame) >= 0) |
c906108c | 807 | { |
b31da25e AC |
808 | printf_filtered ("Stack level %d, frame at ", |
809 | frame_relative_level (selected_frame)); | |
c906108c SS |
810 | print_address_numeric (fi->frame, 1, gdb_stdout); |
811 | printf_filtered (":\n"); | |
812 | } | |
813 | else | |
814 | { | |
815 | printf_filtered ("Stack frame at "); | |
816 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
817 | printf_filtered (":\n"); | |
818 | } | |
819 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
820 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
821 | ||
822 | wrap_here (" "); | |
823 | if (funname) | |
824 | { | |
825 | printf_filtered (" in "); | |
826 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
827 | DMGL_ANSI | DMGL_PARAMS); | |
828 | } | |
829 | wrap_here (" "); | |
830 | if (sal.symtab) | |
831 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
832 | puts_filtered ("; "); | |
833 | wrap_here (" "); | |
834 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
f18c5a73 | 835 | print_address_numeric (frame_pc_unwind (fi), 1, gdb_stdout); |
c906108c SS |
836 | printf_filtered ("\n"); |
837 | ||
838 | { | |
392a587b JM |
839 | int frameless; |
840 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
841 | if (frameless) |
842 | printf_filtered (" (FRAMELESS),"); | |
843 | } | |
844 | ||
845 | if (calling_frame_info) | |
846 | { | |
847 | printf_filtered (" called by frame at "); | |
848 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
849 | } | |
850 | if (fi->next && calling_frame_info) | |
851 | puts_filtered (","); | |
852 | wrap_here (" "); | |
853 | if (fi->next) | |
854 | { | |
855 | printf_filtered (" caller of frame at "); | |
856 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
857 | } | |
858 | if (fi->next || calling_frame_info) | |
859 | puts_filtered ("\n"); | |
860 | if (s) | |
861 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
862 | ||
863 | #ifdef PRINT_EXTRA_FRAME_INFO | |
864 | PRINT_EXTRA_FRAME_INFO (fi); | |
865 | #endif | |
866 | ||
867 | { | |
868 | /* Address of the argument list for this frame, or 0. */ | |
869 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
870 | /* Number of args for this frame, or -1 if unknown. */ | |
871 | int numargs; | |
872 | ||
873 | if (arg_list == 0) | |
874 | printf_filtered (" Arglist at unknown address.\n"); | |
875 | else | |
876 | { | |
877 | printf_filtered (" Arglist at "); | |
878 | print_address_numeric (arg_list, 1, gdb_stdout); | |
879 | printf_filtered (","); | |
880 | ||
392a587b | 881 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
882 | if (numargs < 0) |
883 | puts_filtered (" args: "); | |
884 | else if (numargs == 0) | |
885 | puts_filtered (" no args."); | |
886 | else if (numargs == 1) | |
887 | puts_filtered (" 1 arg: "); | |
888 | else | |
889 | printf_filtered (" %d args: ", numargs); | |
890 | print_frame_args (func, fi, numargs, gdb_stdout); | |
891 | puts_filtered ("\n"); | |
892 | } | |
893 | } | |
894 | { | |
895 | /* Address of the local variables for this frame, or 0. */ | |
896 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
897 | ||
898 | if (arg_list == 0) | |
899 | printf_filtered (" Locals at unknown address,"); | |
900 | else | |
901 | { | |
902 | printf_filtered (" Locals at "); | |
903 | print_address_numeric (arg_list, 1, gdb_stdout); | |
904 | printf_filtered (","); | |
905 | } | |
906 | } | |
907 | ||
4f460812 AC |
908 | if (fi->saved_regs == NULL) |
909 | FRAME_INIT_SAVED_REGS (fi); | |
910 | /* Print as much information as possible on the location of all the | |
911 | registers. */ | |
912 | { | |
913 | enum lval_type lval; | |
914 | int optimized; | |
915 | CORE_ADDR addr; | |
916 | int realnum; | |
917 | int count; | |
918 | int i; | |
919 | int need_nl = 1; | |
920 | ||
921 | /* The sp is special; what's displayed isn't the save address, but | |
922 | the value of the previous frame's sp. This is a legacy thing, | |
923 | at one stage the frame cached the previous frame's SP instead | |
924 | of its address, hence it was easiest to just display the cached | |
925 | value. */ | |
926 | if (SP_REGNUM >= 0) | |
927 | { | |
928 | /* Find out the location of the saved stack pointer with out | |
929 | actually evaluating it. */ | |
930 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
931 | &realnum, NULL); | |
932 | if (!optimized && lval == not_lval) | |
c906108c | 933 | { |
4f460812 AC |
934 | void *value = alloca (MAX_REGISTER_RAW_SIZE); |
935 | CORE_ADDR sp; | |
936 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
937 | &realnum, value); | |
938 | sp = extract_address (value, REGISTER_RAW_SIZE (SP_REGNUM)); | |
939 | printf_filtered (" Previous frame's sp is "); | |
940 | print_address_numeric (sp, 1, gdb_stdout); | |
941 | printf_filtered ("\n"); | |
942 | need_nl = 0; | |
c906108c | 943 | } |
4f460812 AC |
944 | else if (!optimized && lval == lval_memory) |
945 | { | |
946 | printf_filtered (" Previous frame's sp at "); | |
947 | print_address_numeric (addr, 1, gdb_stdout); | |
948 | printf_filtered ("\n"); | |
949 | need_nl = 0; | |
950 | } | |
951 | else if (!optimized && lval == lval_register) | |
952 | { | |
953 | printf_filtered (" Previous frame's sp in %s\n", | |
954 | REGISTER_NAME (realnum)); | |
955 | need_nl = 0; | |
956 | } | |
957 | /* else keep quiet. */ | |
958 | } | |
959 | ||
960 | count = 0; | |
961 | numregs = NUM_REGS + NUM_PSEUDO_REGS; | |
962 | for (i = 0; i < numregs; i++) | |
963 | if (i != SP_REGNUM) | |
964 | { | |
965 | /* Find out the location of the saved register without | |
966 | fetching the corresponding value. */ | |
967 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
968 | NULL); | |
969 | /* For moment, only display registers that were saved on the | |
970 | stack. */ | |
971 | if (!optimized && lval == lval_memory) | |
972 | { | |
973 | if (count == 0) | |
974 | puts_filtered (" Saved registers:\n "); | |
975 | else | |
976 | puts_filtered (","); | |
977 | wrap_here (" "); | |
978 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
979 | print_address_numeric (addr, 1, gdb_stdout); | |
980 | count++; | |
981 | } | |
982 | } | |
983 | if (count || need_nl) | |
c906108c | 984 | puts_filtered ("\n"); |
4f460812 | 985 | } |
c906108c SS |
986 | } |
987 | ||
988 | #if 0 | |
989 | /* Set a limit on the number of frames printed by default in a | |
990 | backtrace. */ | |
991 | ||
992 | static int backtrace_limit; | |
993 | ||
994 | static void | |
fba45db2 | 995 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 996 | { |
bb518678 | 997 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
998 | |
999 | if (count < 0) | |
1000 | error ("Negative argument not meaningful as backtrace limit."); | |
1001 | ||
1002 | backtrace_limit = count; | |
1003 | } | |
1004 | ||
1005 | static void | |
fba45db2 | 1006 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1007 | { |
1008 | if (arg) | |
1009 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1010 | ||
1011 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1012 | } | |
1013 | #endif | |
1014 | ||
1015 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1016 | ||
a14ed312 KB |
1017 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1018 | int from_tty); | |
c906108c | 1019 | static void |
fba45db2 | 1020 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1021 | { |
1022 | struct frame_info *fi; | |
1023 | register int count; | |
1024 | register int i; | |
1025 | register struct frame_info *trailing; | |
1026 | register int trailing_level; | |
1027 | ||
1028 | if (!target_has_stack) | |
1029 | error ("No stack."); | |
1030 | ||
1031 | /* The following code must do two things. First, it must | |
1032 | set the variable TRAILING to the frame from which we should start | |
1033 | printing. Second, it must set the variable count to the number | |
1034 | of frames which we should print, or -1 if all of them. */ | |
1035 | trailing = get_current_frame (); | |
d082b2bb AC |
1036 | |
1037 | /* The target can be in a state where there is no valid frames | |
1038 | (e.g., just connected). */ | |
1039 | if (trailing == NULL) | |
1040 | error ("No stack."); | |
1041 | ||
c906108c SS |
1042 | trailing_level = 0; |
1043 | if (count_exp) | |
1044 | { | |
bb518678 | 1045 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1046 | if (count < 0) |
1047 | { | |
1048 | struct frame_info *current; | |
1049 | ||
1050 | count = -count; | |
1051 | ||
1052 | current = trailing; | |
1053 | while (current && count--) | |
1054 | { | |
1055 | QUIT; | |
1056 | current = get_prev_frame (current); | |
1057 | } | |
c5aa993b | 1058 | |
c906108c SS |
1059 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1060 | will be COUNT below it. */ | |
1061 | while (current) | |
1062 | { | |
1063 | QUIT; | |
1064 | trailing = get_prev_frame (trailing); | |
1065 | current = get_prev_frame (current); | |
1066 | trailing_level++; | |
1067 | } | |
c5aa993b | 1068 | |
c906108c SS |
1069 | count = -1; |
1070 | } | |
1071 | } | |
1072 | else | |
1073 | count = -1; | |
1074 | ||
1075 | if (info_verbose) | |
1076 | { | |
1077 | struct partial_symtab *ps; | |
c5aa993b | 1078 | |
c906108c | 1079 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1080 | a separate pass so that "Reading in symbols for xxx" messages |
1081 | don't screw up the appearance of the backtrace. Also | |
1082 | if people have strong opinions against reading symbols for | |
1083 | backtrace this may have to be an option. */ | |
c906108c SS |
1084 | i = count; |
1085 | for (fi = trailing; | |
1086 | fi != NULL && i--; | |
1087 | fi = get_prev_frame (fi)) | |
1088 | { | |
1089 | QUIT; | |
6f0eaa01 | 1090 | ps = find_pc_psymtab (frame_address_in_block (fi)); |
c906108c SS |
1091 | if (ps) |
1092 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | for (i = 0, fi = trailing; | |
1097 | fi && count--; | |
1098 | i++, fi = get_prev_frame (fi)) | |
1099 | { | |
1100 | QUIT; | |
1101 | ||
1102 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1103 | means further attempts to backtrace would fail (on the other |
1104 | hand, perhaps the code does or could be fixed to make sure | |
1105 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1106 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1107 | if (show_locals) | |
c5aa993b | 1108 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1109 | } |
1110 | ||
1111 | /* If we've stopped before the end, mention that. */ | |
1112 | if (fi && from_tty) | |
1113 | printf_filtered ("(More stack frames follow...)\n"); | |
1114 | } | |
1115 | ||
1116 | static void | |
fba45db2 | 1117 | backtrace_command (char *arg, int from_tty) |
c906108c | 1118 | { |
c5aa993b JM |
1119 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1120 | char **argv = (char **) NULL; | |
1121 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1122 | char *argPtr = arg; | |
c906108c | 1123 | |
c5aa993b | 1124 | if (arg != (char *) NULL) |
c906108c SS |
1125 | { |
1126 | int i; | |
1127 | ||
c5aa993b | 1128 | argv = buildargv (arg); |
7a292a7a | 1129 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1130 | argc = 0; |
c5aa993b JM |
1131 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1132 | { | |
745b8ca0 | 1133 | unsigned int j; |
c5aa993b JM |
1134 | |
1135 | for (j = 0; (j < strlen (argv[i])); j++) | |
1136 | argv[i][j] = tolower (argv[i][j]); | |
1137 | ||
1138 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1139 | argIndicatingFullTrace = argc; | |
1140 | else | |
1141 | { | |
1142 | argc++; | |
1143 | totArgLen += strlen (argv[i]); | |
1144 | } | |
1145 | } | |
c906108c SS |
1146 | totArgLen += argc; |
1147 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1148 | { |
1149 | if (totArgLen > 0) | |
1150 | { | |
1151 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1152 | if (!argPtr) | |
1153 | nomem (0); | |
1154 | else | |
1155 | { | |
1156 | memset (argPtr, 0, totArgLen + 1); | |
1157 | for (i = 0; (i < (argc + 1)); i++) | |
1158 | { | |
1159 | if (i != argIndicatingFullTrace) | |
1160 | { | |
1161 | strcat (argPtr, argv[i]); | |
1162 | strcat (argPtr, " "); | |
1163 | } | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | else | |
1168 | argPtr = (char *) NULL; | |
1169 | } | |
c906108c SS |
1170 | } |
1171 | ||
1172 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1173 | ||
1174 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1175 | xfree (argPtr); |
c906108c SS |
1176 | |
1177 | if (old_chain) | |
c5aa993b | 1178 | do_cleanups (old_chain); |
c906108c SS |
1179 | } |
1180 | ||
a14ed312 | 1181 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1182 | static void |
fba45db2 | 1183 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1184 | { |
1185 | backtrace_command_1 (arg, 1, from_tty); | |
1186 | } | |
c906108c | 1187 | \f |
c5aa993b | 1188 | |
c906108c SS |
1189 | /* Print the local variables of a block B active in FRAME. |
1190 | Return 1 if any variables were printed; 0 otherwise. */ | |
1191 | ||
1192 | static int | |
fba45db2 KB |
1193 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1194 | int num_tabs, register struct ui_file *stream) | |
c906108c | 1195 | { |
c906108c SS |
1196 | register int i, j; |
1197 | register struct symbol *sym; | |
1198 | register int values_printed = 0; | |
1199 | ||
e88c90f2 | 1200 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1201 | { |
c906108c SS |
1202 | switch (SYMBOL_CLASS (sym)) |
1203 | { | |
1204 | case LOC_LOCAL: | |
1205 | case LOC_REGISTER: | |
1206 | case LOC_STATIC: | |
1207 | case LOC_BASEREG: | |
1208 | values_printed = 1; | |
1209 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1210 | fputs_filtered ("\t", stream); |
c906108c SS |
1211 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1212 | fputs_filtered (" = ", stream); | |
1213 | print_variable_value (sym, fi, stream); | |
1214 | fprintf_filtered (stream, "\n"); | |
1215 | break; | |
1216 | ||
1217 | default: | |
1218 | /* Ignore symbols which are not locals. */ | |
1219 | break; | |
1220 | } | |
1221 | } | |
1222 | return values_printed; | |
1223 | } | |
1224 | ||
1225 | /* Same, but print labels. */ | |
1226 | ||
1227 | static int | |
fba45db2 KB |
1228 | print_block_frame_labels (struct block *b, int *have_default, |
1229 | register struct ui_file *stream) | |
c906108c | 1230 | { |
c906108c SS |
1231 | register int i; |
1232 | register struct symbol *sym; | |
1233 | register int values_printed = 0; | |
1234 | ||
e88c90f2 | 1235 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1236 | { |
c906108c SS |
1237 | if (STREQ (SYMBOL_NAME (sym), "default")) |
1238 | { | |
1239 | if (*have_default) | |
1240 | continue; | |
1241 | *have_default = 1; | |
1242 | } | |
1243 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1244 | { | |
1245 | struct symtab_and_line sal; | |
1246 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1247 | values_printed = 1; | |
1248 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1249 | if (addressprint) | |
1250 | { | |
1251 | fprintf_filtered (stream, " "); | |
1252 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1253 | } | |
1254 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1255 | sal.symtab->filename, sal.line); | |
1256 | } | |
1257 | } | |
1258 | return values_printed; | |
1259 | } | |
1260 | ||
1261 | /* Print on STREAM all the local variables in frame FRAME, | |
1262 | including all the blocks active in that frame | |
1263 | at its current pc. | |
1264 | ||
1265 | Returns 1 if the job was done, | |
1266 | or 0 if nothing was printed because we have no info | |
1267 | on the function running in FRAME. */ | |
1268 | ||
1269 | static void | |
fba45db2 KB |
1270 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1271 | register struct ui_file *stream) | |
c906108c | 1272 | { |
ae767bfb | 1273 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1274 | register int values_printed = 0; |
1275 | ||
1276 | if (block == 0) | |
1277 | { | |
1278 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1279 | return; | |
1280 | } | |
c5aa993b | 1281 | |
c906108c SS |
1282 | while (block != 0) |
1283 | { | |
1284 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1285 | values_printed = 1; | |
1286 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1287 | Don't continue to its superblock, the block of |
1288 | per-file symbols. */ | |
c906108c SS |
1289 | if (BLOCK_FUNCTION (block)) |
1290 | break; | |
1291 | block = BLOCK_SUPERBLOCK (block); | |
1292 | } | |
1293 | ||
1294 | if (!values_printed) | |
1295 | { | |
1296 | fprintf_filtered (stream, "No locals.\n"); | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | /* Same, but print labels. */ | |
1301 | ||
1302 | static void | |
fba45db2 KB |
1303 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1304 | register struct ui_file *stream) | |
c906108c SS |
1305 | { |
1306 | register struct blockvector *bl; | |
ae767bfb | 1307 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1308 | register int values_printed = 0; |
1309 | int index, have_default = 0; | |
1310 | char *blocks_printed; | |
1311 | CORE_ADDR pc = fi->pc; | |
1312 | ||
1313 | if (block == 0) | |
1314 | { | |
1315 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1316 | return; | |
1317 | } | |
1318 | ||
1319 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1320 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1321 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1322 | ||
1323 | while (block != 0) | |
1324 | { | |
1325 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1326 | int last_index; | |
1327 | ||
1328 | if (bl != blockvector_for_pc (end, &index)) | |
1329 | error ("blockvector blotch"); | |
1330 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1331 | error ("blockvector botch"); | |
1332 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1333 | index += 1; | |
1334 | ||
1335 | /* Don't print out blocks that have gone by. */ | |
1336 | while (index < last_index | |
1337 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1338 | index++; | |
1339 | ||
1340 | while (index < last_index | |
1341 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1342 | { | |
1343 | if (blocks_printed[index] == 0) | |
1344 | { | |
1345 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1346 | values_printed = 1; | |
1347 | blocks_printed[index] = 1; | |
1348 | } | |
1349 | index++; | |
1350 | } | |
1351 | if (have_default) | |
1352 | return; | |
1353 | if (values_printed && this_level_only) | |
1354 | return; | |
1355 | ||
1356 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1357 | Don't continue to its superblock, the block of |
1358 | per-file symbols. */ | |
c906108c SS |
1359 | if (BLOCK_FUNCTION (block)) |
1360 | break; | |
1361 | block = BLOCK_SUPERBLOCK (block); | |
1362 | } | |
1363 | ||
1364 | if (!values_printed && !this_level_only) | |
1365 | { | |
1366 | fprintf_filtered (stream, "No catches.\n"); | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | /* ARGSUSED */ | |
1371 | void | |
fba45db2 | 1372 | locals_info (char *args, int from_tty) |
c906108c SS |
1373 | { |
1374 | if (!selected_frame) | |
1375 | error ("No frame selected."); | |
1376 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1377 | } | |
1378 | ||
1379 | static void | |
fba45db2 | 1380 | catch_info (char *ignore, int from_tty) |
c906108c | 1381 | { |
c5aa993b | 1382 | struct symtab_and_line *sal; |
c906108c | 1383 | |
c5aa993b | 1384 | /* Check for target support for exception handling */ |
c906108c SS |
1385 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1386 | if (sal) | |
1387 | { | |
1388 | /* Currently not handling this */ | |
1389 | /* Ideally, here we should interact with the C++ runtime | |
1390 | system to find the list of active handlers, etc. */ | |
1391 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1392 | #if 0 | |
c5aa993b JM |
1393 | if (!selected_frame) |
1394 | error ("No frame selected."); | |
c906108c SS |
1395 | #endif |
1396 | } | |
1397 | else | |
1398 | { | |
c5aa993b | 1399 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1400 | if (!selected_frame) |
c5aa993b JM |
1401 | error ("No frame selected."); |
1402 | ||
c906108c SS |
1403 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1404 | } | |
1405 | } | |
1406 | ||
1407 | static void | |
fba45db2 KB |
1408 | print_frame_arg_vars (register struct frame_info *fi, |
1409 | register struct ui_file *stream) | |
c906108c SS |
1410 | { |
1411 | struct symbol *func = get_frame_function (fi); | |
1412 | register struct block *b; | |
c906108c SS |
1413 | register int i; |
1414 | register struct symbol *sym, *sym2; | |
1415 | register int values_printed = 0; | |
1416 | ||
1417 | if (func == 0) | |
1418 | { | |
1419 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1420 | return; | |
1421 | } | |
1422 | ||
1423 | b = SYMBOL_BLOCK_VALUE (func); | |
e88c90f2 | 1424 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1425 | { |
c906108c SS |
1426 | switch (SYMBOL_CLASS (sym)) |
1427 | { | |
1428 | case LOC_ARG: | |
1429 | case LOC_LOCAL_ARG: | |
1430 | case LOC_REF_ARG: | |
1431 | case LOC_REGPARM: | |
1432 | case LOC_REGPARM_ADDR: | |
1433 | case LOC_BASEREG_ARG: | |
1434 | values_printed = 1; | |
1435 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1436 | fputs_filtered (" = ", stream); | |
1437 | ||
1438 | /* We have to look up the symbol because arguments can have | |
1439 | two entries (one a parameter, one a local) and the one we | |
1440 | want is the local, which lookup_symbol will find for us. | |
1441 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1442 | small structure and gcc2 when the argument type is float | |
1443 | and it is passed as a double and converted to float by | |
1444 | the prologue (in the latter case the type of the LOC_ARG | |
1445 | symbol is double and the type of the LOC_LOCAL symbol is | |
1446 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1447 | are not combined in symbol-reading. */ | |
1448 | ||
1449 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1450 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1451 | print_variable_value (sym2, fi, stream); |
1452 | fprintf_filtered (stream, "\n"); | |
1453 | break; | |
1454 | ||
1455 | default: | |
1456 | /* Don't worry about things which aren't arguments. */ | |
1457 | break; | |
1458 | } | |
1459 | } | |
c906108c SS |
1460 | if (!values_printed) |
1461 | { | |
1462 | fprintf_filtered (stream, "No arguments.\n"); | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | void | |
fba45db2 | 1467 | args_info (char *ignore, int from_tty) |
c906108c SS |
1468 | { |
1469 | if (!selected_frame) | |
1470 | error ("No frame selected."); | |
1471 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1472 | } | |
1473 | ||
1474 | ||
1475 | static void | |
fba45db2 | 1476 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1477 | { |
c5aa993b JM |
1478 | args_info (ignore, from_tty); |
1479 | locals_info (ignore, from_tty); | |
c906108c | 1480 | } |
c906108c | 1481 | \f |
c5aa993b | 1482 | |
0f7d239c | 1483 | /* Select frame FI (or NULL - to invalidate the current frame). */ |
c906108c SS |
1484 | |
1485 | void | |
0f7d239c | 1486 | select_frame (struct frame_info *fi) |
c906108c SS |
1487 | { |
1488 | register struct symtab *s; | |
1489 | ||
1490 | selected_frame = fi; | |
0f7d239c AC |
1491 | /* NOTE: cagney/2002-05-04: FI can be NULL. This occures when the |
1492 | frame is being invalidated. */ | |
c906108c | 1493 | if (selected_frame_level_changed_hook) |
0f7d239c | 1494 | selected_frame_level_changed_hook (frame_relative_level (fi)); |
c906108c | 1495 | |
bfb3754e KS |
1496 | /* FIXME: kseitz/2002-08-28: It would be nice to call |
1497 | selected_frame_level_changed_event right here, but due to limitations | |
1498 | in the current interfaces, we would end up flooding UIs with events | |
1499 | because select_frame is used extensively internally. | |
1500 | ||
1501 | Once we have frame-parameterized frame (and frame-related) commands, | |
1502 | the event notification can be moved here, since this function will only | |
1503 | be called when the users selected frame is being changed. */ | |
1504 | ||
c906108c SS |
1505 | /* Ensure that symbols for this frame are read in. Also, determine the |
1506 | source language of this frame, and switch to it if desired. */ | |
1507 | if (fi) | |
c5aa993b JM |
1508 | { |
1509 | s = find_pc_symtab (fi->pc); | |
1510 | if (s | |
1511 | && s->language != current_language->la_language | |
1512 | && s->language != language_unknown | |
1513 | && language_mode == language_mode_auto) | |
1514 | { | |
1515 | set_language (s->language); | |
1516 | } | |
c906108c | 1517 | } |
c906108c | 1518 | } |
c906108c | 1519 | \f |
c5aa993b | 1520 | |
0f7d239c AC |
1521 | /* Select frame FI. Also print the stack frame and show the source if |
1522 | this is the tui version. */ | |
bedfa57b AC |
1523 | static void |
1524 | select_and_print_frame (struct frame_info *fi) | |
c906108c | 1525 | { |
0f7d239c | 1526 | select_frame (fi); |
c906108c SS |
1527 | if (fi) |
1528 | { | |
bedfa57b | 1529 | print_stack_frame (fi, frame_relative_level (fi), 1); |
c906108c SS |
1530 | } |
1531 | } | |
c906108c | 1532 | \f |
c906108c | 1533 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1534 | Can return zero under various legitimate circumstances. |
1535 | ||
1536 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1537 | code address within the block returned. We use this to decide | |
1538 | which macros are in scope. */ | |
c906108c SS |
1539 | |
1540 | struct block * | |
ae767bfb | 1541 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1542 | { |
1543 | if (!target_has_stack) | |
1544 | return 0; | |
1545 | ||
8c69fc49 AC |
1546 | /* NOTE: cagney/2002-11-28: Why go to all this effort to not create |
1547 | a selected/current frame? Perhaphs this function is called, | |
1548 | indirectly, by WFI in "infrun.c" where avoiding the creation of | |
1549 | an inner most frame is very important (it slows down single | |
1550 | step). I suspect, though that this was true in the deep dark | |
1551 | past but is no longer the case. A mindless look at all the | |
1552 | callers tends to support this theory. I think we should be able | |
1553 | to assume that there is always a selcted frame. */ | |
1554 | /* gdb_assert (selected_frame != NULL); So, do you feel lucky? */ | |
c906108c | 1555 | if (!selected_frame) |
8c69fc49 AC |
1556 | { |
1557 | CORE_ADDR pc = read_pc (); | |
1558 | if (addr_in_block != NULL) | |
1559 | *addr_in_block = pc; | |
1560 | return block_for_pc (pc); | |
1561 | } | |
ae767bfb | 1562 | return get_frame_block (selected_frame, addr_in_block); |
c906108c SS |
1563 | } |
1564 | ||
1565 | /* Find a frame a certain number of levels away from FRAME. | |
1566 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1567 | Positive means go to earlier frames (up); negative, the reverse. | |
1568 | The int that contains the number of levels is counted toward | |
1569 | zero as the frames for those levels are found. | |
1570 | If the top or bottom frame is reached, that frame is returned, | |
1571 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1572 | how much farther the original request asked to go. */ | |
1573 | ||
1574 | struct frame_info * | |
fba45db2 KB |
1575 | find_relative_frame (register struct frame_info *frame, |
1576 | register int *level_offset_ptr) | |
c906108c SS |
1577 | { |
1578 | register struct frame_info *prev; | |
1579 | register struct frame_info *frame1; | |
1580 | ||
1581 | /* Going up is simple: just do get_prev_frame enough times | |
1582 | or until initial frame is reached. */ | |
1583 | while (*level_offset_ptr > 0) | |
1584 | { | |
1585 | prev = get_prev_frame (frame); | |
1586 | if (prev == 0) | |
1587 | break; | |
1588 | (*level_offset_ptr)--; | |
1589 | frame = prev; | |
1590 | } | |
1591 | /* Going down is just as simple. */ | |
1592 | if (*level_offset_ptr < 0) | |
1593 | { | |
c5aa993b JM |
1594 | while (*level_offset_ptr < 0) |
1595 | { | |
1596 | frame1 = get_next_frame (frame); | |
1597 | if (!frame1) | |
1598 | break; | |
1599 | frame = frame1; | |
1600 | (*level_offset_ptr)++; | |
1601 | } | |
c906108c SS |
1602 | } |
1603 | return frame; | |
1604 | } | |
1605 | ||
1606 | /* The "select_frame" command. With no arg, NOP. | |
1607 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1608 | valid level. Otherwise, treat level_exp as an address expression | |
1609 | and select it. See parse_frame_specification for more info on proper | |
1610 | frame expressions. */ | |
1611 | ||
1612 | /* ARGSUSED */ | |
8b93c638 | 1613 | void |
fba45db2 | 1614 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1615 | { |
1616 | select_frame_command (level_exp, from_tty); | |
1617 | } | |
8926118c | 1618 | |
c906108c | 1619 | static void |
fba45db2 | 1620 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1621 | { |
bfb3754e KS |
1622 | struct frame_info *frame; |
1623 | int level = frame_relative_level (selected_frame); | |
c906108c SS |
1624 | |
1625 | if (!target_has_stack) | |
1626 | error ("No stack."); | |
1627 | ||
1628 | frame = parse_frame_specification (level_exp); | |
1629 | ||
0f7d239c | 1630 | select_frame (frame); |
bfb3754e KS |
1631 | if (level != frame_relative_level (selected_frame)) |
1632 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); | |
c906108c SS |
1633 | } |
1634 | ||
1635 | /* The "frame" command. With no arg, print selected frame briefly. | |
1636 | With arg, behaves like select_frame and then prints the selected | |
1637 | frame. */ | |
1638 | ||
1639 | void | |
fba45db2 | 1640 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1641 | { |
1642 | select_frame_command (level_exp, from_tty); | |
b31da25e AC |
1643 | show_and_print_stack_frame (selected_frame, |
1644 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1645 | } |
1646 | ||
1647 | /* The XDB Compatibility command to print the current frame. */ | |
1648 | ||
7a292a7a | 1649 | static void |
fba45db2 | 1650 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1651 | { |
1652 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1653 | error ("No stack."); |
b31da25e AC |
1654 | print_only_stack_frame (selected_frame, |
1655 | frame_relative_level (selected_frame), 1); | |
7a292a7a | 1656 | } |
c906108c SS |
1657 | |
1658 | /* Select the frame up one or COUNT stack levels | |
1659 | from the previously selected frame, and print it briefly. */ | |
1660 | ||
1661 | /* ARGSUSED */ | |
1662 | static void | |
fba45db2 | 1663 | up_silently_base (char *count_exp) |
c906108c SS |
1664 | { |
1665 | register struct frame_info *fi; | |
1666 | int count = 1, count1; | |
1667 | if (count_exp) | |
bb518678 | 1668 | count = parse_and_eval_long (count_exp); |
c906108c | 1669 | count1 = count; |
c5aa993b | 1670 | |
c906108c SS |
1671 | if (target_has_stack == 0 || selected_frame == 0) |
1672 | error ("No stack."); | |
1673 | ||
1674 | fi = find_relative_frame (selected_frame, &count1); | |
1675 | if (count1 != 0 && count_exp == 0) | |
1676 | error ("Initial frame selected; you cannot go up."); | |
0f7d239c | 1677 | select_frame (fi); |
bfb3754e | 1678 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); |
c906108c SS |
1679 | } |
1680 | ||
1681 | static void | |
fba45db2 | 1682 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1683 | { |
c5aa993b | 1684 | up_silently_base (count_exp); |
c906108c SS |
1685 | } |
1686 | ||
1687 | static void | |
fba45db2 | 1688 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1689 | { |
1690 | up_silently_base (count_exp); | |
b31da25e AC |
1691 | show_and_print_stack_frame (selected_frame, |
1692 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1693 | } |
1694 | ||
1695 | /* Select the frame down one or COUNT stack levels | |
1696 | from the previously selected frame, and print it briefly. */ | |
1697 | ||
1698 | /* ARGSUSED */ | |
1699 | static void | |
fba45db2 | 1700 | down_silently_base (char *count_exp) |
c906108c SS |
1701 | { |
1702 | register struct frame_info *frame; | |
1703 | int count = -1, count1; | |
1704 | if (count_exp) | |
bb518678 | 1705 | count = -parse_and_eval_long (count_exp); |
c906108c | 1706 | count1 = count; |
c5aa993b | 1707 | |
c906108c SS |
1708 | if (target_has_stack == 0 || selected_frame == 0) |
1709 | error ("No stack."); | |
1710 | ||
1711 | frame = find_relative_frame (selected_frame, &count1); | |
1712 | if (count1 != 0 && count_exp == 0) | |
1713 | { | |
1714 | ||
1715 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1716 | means to really go down (and let me know if that is |
1717 | impossible), but "down 9999" can be used to mean go all the way | |
1718 | down without getting an error. */ | |
c906108c SS |
1719 | |
1720 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1721 | } | |
1722 | ||
0f7d239c | 1723 | select_frame (frame); |
bfb3754e | 1724 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); |
c906108c SS |
1725 | } |
1726 | ||
1727 | /* ARGSUSED */ | |
1728 | static void | |
fba45db2 | 1729 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1730 | { |
1731 | down_silently_base (count_exp); | |
c906108c SS |
1732 | } |
1733 | ||
1734 | static void | |
fba45db2 | 1735 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1736 | { |
1737 | down_silently_base (count_exp); | |
b31da25e AC |
1738 | show_and_print_stack_frame (selected_frame, |
1739 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1740 | } |
1741 | \f | |
8b93c638 | 1742 | void |
fba45db2 | 1743 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1744 | { |
1745 | struct symbol *thisfun; | |
1746 | CORE_ADDR selected_frame_addr; | |
1747 | CORE_ADDR selected_frame_pc; | |
1748 | struct frame_info *frame; | |
3d6d86c6 | 1749 | struct value *return_value = NULL; |
c906108c SS |
1750 | |
1751 | if (selected_frame == NULL) | |
1752 | error ("No selected frame."); | |
1753 | thisfun = get_frame_function (selected_frame); | |
c193f6ac | 1754 | selected_frame_addr = get_frame_base (selected_frame); |
c906108c SS |
1755 | selected_frame_pc = selected_frame->pc; |
1756 | ||
1757 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1758 | ||
1759 | if (retval_exp) | |
1760 | { | |
1761 | struct type *return_type = NULL; | |
1762 | ||
1763 | return_value = parse_and_eval (retval_exp); | |
1764 | ||
1765 | /* Cast return value to the return type of the function. */ | |
1766 | if (thisfun != NULL) | |
1767 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1768 | if (return_type == NULL) | |
1769 | return_type = builtin_type_int; | |
1770 | return_value = value_cast (return_type, return_value); | |
1771 | ||
1772 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1773 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1774 | if (VALUE_LAZY (return_value)) |
1775 | value_fetch_lazy (return_value); | |
1776 | } | |
1777 | ||
1778 | /* If interactive, require confirmation. */ | |
1779 | ||
1780 | if (from_tty) | |
1781 | { | |
1782 | if (thisfun != 0) | |
1783 | { | |
1784 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1785 | { | |
1786 | error ("Not confirmed."); | |
1787 | /* NOTREACHED */ | |
1788 | } | |
1789 | } | |
c5aa993b JM |
1790 | else if (!query ("Make selected stack frame return now? ")) |
1791 | error ("Not confirmed."); | |
c906108c SS |
1792 | } |
1793 | ||
1794 | /* Do the real work. Pop until the specified frame is current. We | |
1795 | use this method because the selected_frame is not valid after | |
1796 | a POP_FRAME. The pc comparison makes this work even if the | |
1797 | selected frame shares its fp with another frame. */ | |
1798 | ||
c5aa993b | 1799 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1800 | || selected_frame_pc != frame->pc) |
1801 | POP_FRAME; | |
1802 | ||
1803 | /* Then pop that frame. */ | |
1804 | ||
1805 | POP_FRAME; | |
1806 | ||
1807 | /* Compute the return value (if any) and store in the place | |
1808 | for return values. */ | |
1809 | ||
1810 | if (retval_exp) | |
1811 | set_return_value (return_value); | |
1812 | ||
1a2aab69 PS |
1813 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1814 | ||
1815 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
c193f6ac | 1816 | get_frame_base (get_current_frame ()))) |
1a2aab69 PS |
1817 | POP_FRAME; |
1818 | ||
c906108c SS |
1819 | /* If interactive, print the frame that is now current. */ |
1820 | ||
1821 | if (from_tty) | |
1822 | frame_command ("0", 1); | |
1823 | else | |
1824 | select_frame_command ("0", 0); | |
1825 | } | |
1826 | ||
1827 | /* Sets the scope to input function name, provided that the | |
1828 | function is within the current stack frame */ | |
1829 | ||
1830 | struct function_bounds | |
1831 | { | |
1832 | CORE_ADDR low, high; | |
1833 | }; | |
1834 | ||
a14ed312 | 1835 | static void func_command (char *arg, int from_tty); |
c906108c | 1836 | static void |
fba45db2 | 1837 | func_command (char *arg, int from_tty) |
c906108c SS |
1838 | { |
1839 | struct frame_info *fp; | |
1840 | int found = 0; | |
1841 | struct symtabs_and_lines sals; | |
1842 | int i; | |
1843 | int level = 1; | |
1844 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1845 | ||
1846 | if (arg != (char *) NULL) | |
1847 | return; | |
1848 | ||
1849 | fp = parse_frame_specification ("0"); | |
1850 | sals = decode_line_spec (arg, 1); | |
1851 | func_bounds = (struct function_bounds *) xmalloc ( | |
1852 | sizeof (struct function_bounds) * sals.nelts); | |
1853 | for (i = 0; (i < sals.nelts && !found); i++) | |
1854 | { | |
1855 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1856 | find_pc_partial_function (sals.sals[i].pc, | |
1857 | (char **) NULL, | |
1858 | &func_bounds[i].low, | |
1859 | &func_bounds[i].high) == 0) | |
1860 | { | |
1861 | func_bounds[i].low = | |
1862 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1863 | } | |
1864 | } | |
1865 | ||
1866 | do | |
1867 | { | |
1868 | for (i = 0; (i < sals.nelts && !found); i++) | |
1869 | found = (fp->pc >= func_bounds[i].low && | |
1870 | fp->pc < func_bounds[i].high); | |
1871 | if (!found) | |
1872 | { | |
1873 | level = 1; | |
1874 | fp = find_relative_frame (fp, &level); | |
1875 | } | |
1876 | } | |
1877 | while (!found && level == 0); | |
1878 | ||
1879 | if (func_bounds) | |
b8c9b27d | 1880 | xfree (func_bounds); |
c906108c SS |
1881 | |
1882 | if (!found) | |
1883 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1884 | else if (fp != selected_frame) | |
bedfa57b | 1885 | select_and_print_frame (fp); |
c906108c SS |
1886 | } |
1887 | ||
1888 | /* Gets the language of the current frame. */ | |
1889 | ||
1890 | enum language | |
fba45db2 | 1891 | get_frame_language (void) |
c906108c SS |
1892 | { |
1893 | register struct symtab *s; | |
1894 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1895 | |
c906108c SS |
1896 | if (selected_frame) |
1897 | { | |
c5aa993b | 1898 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1899 | if (s) |
1900 | flang = s->language; | |
1901 | else | |
1902 | flang = language_unknown; | |
1903 | } | |
1904 | else | |
1905 | flang = language_unknown; | |
1906 | ||
1907 | return flang; | |
1908 | } | |
1909 | \f | |
1910 | void | |
fba45db2 | 1911 | _initialize_stack (void) |
c906108c | 1912 | { |
c5aa993b | 1913 | #if 0 |
c906108c SS |
1914 | backtrace_limit = 30; |
1915 | #endif | |
1916 | ||
1917 | add_com ("return", class_stack, return_command, | |
1918 | "Make selected stack frame return to its caller.\n\ | |
1919 | Control remains in the debugger, but when you continue\n\ | |
1920 | execution will resume in the frame above the one now selected.\n\ | |
1921 | If an argument is given, it is an expression for the value to return."); | |
1922 | ||
1923 | add_com ("up", class_stack, up_command, | |
1924 | "Select and print stack frame that called this one.\n\ | |
1925 | An argument says how many frames up to go."); | |
1926 | add_com ("up-silently", class_support, up_silently_command, | |
1927 | "Same as the `up' command, but does not print anything.\n\ | |
1928 | This is useful in command scripts."); | |
1929 | ||
1930 | add_com ("down", class_stack, down_command, | |
1931 | "Select and print stack frame called by this one.\n\ | |
1932 | An argument says how many frames down to go."); | |
1933 | add_com_alias ("do", "down", class_stack, 1); | |
1934 | add_com_alias ("dow", "down", class_stack, 1); | |
1935 | add_com ("down-silently", class_support, down_silently_command, | |
1936 | "Same as the `down' command, but does not print anything.\n\ | |
1937 | This is useful in command scripts."); | |
1938 | ||
1939 | add_com ("frame", class_stack, frame_command, | |
1940 | "Select and print a stack frame.\n\ | |
1941 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1942 | An argument specifies the frame to select.\n\ | |
1943 | It can be a stack frame number or the address of the frame.\n\ | |
1944 | With argument, nothing is printed if input is coming from\n\ | |
1945 | a command file or a user-defined command."); | |
1946 | ||
1947 | add_com_alias ("f", "frame", class_stack, 1); | |
1948 | ||
1949 | if (xdb_commands) | |
1950 | { | |
c5aa993b JM |
1951 | add_com ("L", class_stack, current_frame_command, |
1952 | "Print the current stack frame.\n"); | |
c906108c SS |
1953 | add_com_alias ("V", "frame", class_stack, 1); |
1954 | } | |
1955 | add_com ("select-frame", class_stack, select_frame_command, | |
1956 | "Select a stack frame without printing anything.\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 | ||
1960 | add_com ("backtrace", class_stack, backtrace_command, | |
1961 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1962 | With a negative argument, print outermost -COUNT frames.\n\ | |
1963 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1964 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1965 | if (xdb_commands) | |
1966 | { | |
1967 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1968 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1969 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1970 | and the values of the local variables.\n\ |
1971 | With a negative argument, print outermost -COUNT frames.\n\ | |
1972 | Usage: T <count>\n"); | |
1973 | } | |
1974 | ||
1975 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1976 | add_info ("stack", backtrace_command, | |
1977 | "Backtrace of the stack, or innermost COUNT frames."); | |
1978 | add_info_alias ("s", "stack", 1); | |
1979 | add_info ("frame", frame_info, | |
1980 | "All about selected stack frame, or frame at ADDR."); | |
1981 | add_info_alias ("f", "frame", 1); | |
1982 | add_info ("locals", locals_info, | |
1983 | "Local variables of current stack frame."); | |
1984 | add_info ("args", args_info, | |
1985 | "Argument variables of current stack frame."); | |
1986 | if (xdb_commands) | |
c5aa993b JM |
1987 | add_com ("l", class_info, args_plus_locals_info, |
1988 | "Argument and local variables of current stack frame."); | |
c906108c SS |
1989 | |
1990 | if (dbx_commands) | |
c5aa993b JM |
1991 | add_com ("func", class_stack, func_command, |
1992 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
1993 | |
1994 | add_info ("catch", catch_info, | |
1995 | "Exceptions that can be caught in the current stack frame."); | |
1996 | ||
1997 | #if 0 | |
c5aa993b JM |
1998 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
1999 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2000 | &setlist); |
2001 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2002 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2003 | #endif |
2004 | } |