Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
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. */ | |
1058bca7 | 359 | find_frame_sal (fi, &sal); |
c906108c | 360 | |
c5394b80 JM |
361 | location_print = (source == LOCATION |
362 | || source == LOC_AND_ADDRESS | |
363 | || source == SRC_AND_LOC); | |
364 | ||
365 | if (location_print || !sal.symtab) | |
366 | print_frame (fi, level, source, args, sal); | |
367 | ||
368 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
0378c332 | 369 | |
66609862 | 370 | if (sal.symtab) |
0378c332 | 371 | set_current_source_symtab_and_line (&sal); |
c5394b80 JM |
372 | |
373 | if (source_print && sal.symtab) | |
374 | { | |
0378c332 | 375 | struct symtab_and_line cursal; |
c5394b80 JM |
376 | int done = 0; |
377 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
378 | ||
379 | if (annotation_level) | |
380 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
381 | fi->pc); | |
382 | if (!done) | |
383 | { | |
ba4bbdcb | 384 | if (print_frame_info_listing_hook) |
66609862 | 385 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); |
ba4bbdcb | 386 | else |
c5394b80 | 387 | { |
ba4bbdcb KS |
388 | /* We used to do this earlier, but that is clearly |
389 | wrong. This function is used by many different | |
390 | parts of gdb, including normal_stop in infrun.c, | |
391 | which uses this to print out the current PC | |
392 | when we stepi/nexti into the middle of a source | |
393 | line. Only the command line really wants this | |
394 | behavior. Other UIs probably would like the | |
395 | ability to decide for themselves if it is desired. */ | |
396 | if (addressprint && mid_statement) | |
397 | { | |
ba4bbdcb KS |
398 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
399 | ui_out_text (uiout, "\t"); | |
ba4bbdcb KS |
400 | } |
401 | ||
402 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 403 | } |
c5394b80 | 404 | } |
53cb0458 FN |
405 | /* Make sure we have at least a default source file */ |
406 | set_default_source_symtab_and_line (); | |
407 | cursal = get_current_source_symtab_and_line (); | |
0378c332 FN |
408 | cursal.line = max (sal.line - get_lines_to_list () / 2, 1); |
409 | set_current_source_symtab_and_line (&cursal); | |
c5394b80 JM |
410 | } |
411 | ||
412 | if (source != 0) | |
413 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
414 | ||
415 | annotate_frame_end (); | |
416 | ||
417 | gdb_flush (gdb_stdout); | |
418 | } | |
419 | ||
420 | static void | |
421 | print_frame (struct frame_info *fi, | |
422 | int level, | |
423 | int source, | |
424 | int args, | |
425 | struct symtab_and_line sal) | |
426 | { | |
427 | struct symbol *func; | |
428 | register char *funname = 0; | |
429 | enum language funlang = language_unknown; | |
8b93c638 JM |
430 | struct ui_stream *stb; |
431 | struct cleanup *old_chain; | |
e6e0bfab | 432 | struct cleanup *list_chain; |
8b93c638 JM |
433 | |
434 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 435 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c5394b80 | 436 | |
6f0eaa01 | 437 | func = find_pc_function (frame_address_in_block (fi)); |
c906108c SS |
438 | if (func) |
439 | { | |
440 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
441 | function (when we are in the first function in a file which |
442 | is compiled without debugging symbols, the previous function | |
443 | is compiled with debugging symbols, and the "foo.o" symbol | |
444 | that is supposed to tell us where the file with debugging symbols | |
445 | ends has been truncated by ar because it is longer than 15 | |
446 | characters). This also occurs if the user uses asm() to create | |
447 | a function but not stabs for it (in a file compiled -g). | |
448 | ||
449 | So look in the minimal symbol tables as well, and if it comes | |
450 | up with a larger address for the function use that instead. | |
451 | I don't think this can ever cause any problems; there shouldn't | |
452 | be any minimal symbols in the middle of a function; if this is | |
453 | ever changed many parts of GDB will need to be changed (and we'll | |
454 | create a find_pc_minimal_function or some such). */ | |
c906108c | 455 | |
6f0eaa01 | 456 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c | 457 | if (msymbol != NULL |
c5aa993b | 458 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
459 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
460 | { | |
461 | #if 0 | |
462 | /* There is no particular reason to think the line number | |
463 | information is wrong. Someone might have just put in | |
464 | a label with asm() but left the line numbers alone. */ | |
465 | /* In this case we have no way of knowing the source file | |
466 | and line number, so don't print them. */ | |
467 | sal.symtab = 0; | |
468 | #endif | |
469 | /* We also don't know anything about the function besides | |
470 | its address and name. */ | |
471 | func = 0; | |
472 | funname = SYMBOL_NAME (msymbol); | |
473 | funlang = SYMBOL_LANGUAGE (msymbol); | |
474 | } | |
475 | else | |
476 | { | |
c5394b80 JM |
477 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
478 | demangled name that we already have stored in the symbol | |
479 | table, but we stored a version with DMGL_PARAMS turned | |
480 | on, and here we don't want to display parameters. So call | |
481 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
482 | that printf_symbol_filtered() will again try to demangle | |
483 | the name on the fly, but the issue is that if | |
484 | cplus_demangle() fails here, it'll fail there too. So we | |
485 | want to catch the failure ("demangled==NULL" case below) | |
486 | here, while we still have our hands on the function | |
487 | symbol.) */ | |
c5aa993b | 488 | char *demangled; |
c906108c SS |
489 | funname = SYMBOL_NAME (func); |
490 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
491 | if (funlang == language_cplus) |
492 | { | |
493 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
494 | if (demangled == NULL) | |
c5394b80 JM |
495 | /* If the demangler fails, try the demangled name from |
496 | the symbol table. This'll have parameters, but | |
497 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
498 | funname = SYMBOL_SOURCE_NAME (func); |
499 | } | |
c906108c SS |
500 | } |
501 | } | |
502 | else | |
503 | { | |
6f0eaa01 | 504 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c SS |
505 | if (msymbol != NULL) |
506 | { | |
507 | funname = SYMBOL_NAME (msymbol); | |
508 | funlang = SYMBOL_LANGUAGE (msymbol); | |
509 | } | |
510 | } | |
511 | ||
c5394b80 JM |
512 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
513 | ||
666547aa | 514 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 JM |
515 | |
516 | if (level >= 0) | |
8b93c638 | 517 | { |
8b93c638 | 518 | ui_out_text (uiout, "#"); |
52c6a6ac | 519 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); |
8b93c638 | 520 | } |
c5394b80 JM |
521 | if (addressprint) |
522 | if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS) | |
523 | { | |
524 | annotate_frame_address (); | |
8b93c638 JM |
525 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
526 | annotate_frame_address_end (); | |
527 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
528 | } |
529 | annotate_frame_function_name (); | |
8b93c638 JM |
530 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, |
531 | DMGL_ANSI); | |
532 | ui_out_field_stream (uiout, "func", stb); | |
533 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
534 | annotate_frame_args (); |
535 | ||
8b93c638 | 536 | ui_out_text (uiout, " ("); |
c5394b80 | 537 | if (args) |
c906108c | 538 | { |
c5394b80 | 539 | struct print_args_args args; |
d493eb33 | 540 | struct cleanup *args_list_chain; |
c5394b80 JM |
541 | args.fi = fi; |
542 | args.func = func; | |
543 | args.stream = gdb_stdout; | |
68c81b54 | 544 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 545 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
546 | /* FIXME: args must be a list. If one argument is a string it will |
547 | have " that will not be properly escaped. */ | |
666547aa | 548 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 549 | do_cleanups (args_list_chain); |
c5394b80 JM |
550 | QUIT; |
551 | } | |
8b93c638 | 552 | ui_out_text (uiout, ")"); |
c5394b80 JM |
553 | if (sal.symtab && sal.symtab->filename) |
554 | { | |
555 | annotate_frame_source_begin (); | |
8b93c638 JM |
556 | ui_out_wrap_hint (uiout, " "); |
557 | ui_out_text (uiout, " at "); | |
558 | annotate_frame_source_file (); | |
559 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
560 | annotate_frame_source_file_end (); | |
561 | ui_out_text (uiout, ":"); | |
562 | annotate_frame_source_line (); | |
563 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
564 | annotate_frame_source_end (); |
565 | } | |
c906108c | 566 | |
c5394b80 JM |
567 | #ifdef PC_SOLIB |
568 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 569 | { |
c5394b80 JM |
570 | char *lib = PC_SOLIB (fi->pc); |
571 | if (lib) | |
c906108c | 572 | { |
c5394b80 | 573 | annotate_frame_where (); |
8b93c638 JM |
574 | ui_out_wrap_hint (uiout, " "); |
575 | ui_out_text (uiout, " from "); | |
576 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 577 | } |
c906108c | 578 | } |
c5394b80 | 579 | #endif /* PC_SOLIB */ |
e514a9d6 | 580 | |
666547aa | 581 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 582 | do_cleanups (list_chain); |
8b93c638 JM |
583 | ui_out_text (uiout, "\n"); |
584 | do_cleanups (old_chain); | |
c906108c SS |
585 | } |
586 | \f | |
587 | ||
c906108c SS |
588 | /* Show or print the frame info. If this is the tui, it will be shown in |
589 | the source display */ | |
590 | void | |
fba45db2 KB |
591 | print_frame_info (struct frame_info *fi, register int level, int source, |
592 | int args) | |
c906108c | 593 | { |
37767e42 | 594 | print_frame_info_base (fi, level, source, args); |
c906108c SS |
595 | } |
596 | ||
597 | /* Show the frame info. If this is the tui, it will be shown in | |
598 | the source display otherwise, nothing is done */ | |
599 | void | |
fba45db2 | 600 | show_stack_frame (struct frame_info *fi) |
c906108c | 601 | { |
c906108c | 602 | } |
c906108c | 603 | \f |
c5aa993b | 604 | |
c906108c SS |
605 | /* Read a frame specification in whatever the appropriate format is. |
606 | Call error() if the specification is in any way invalid (i.e. | |
607 | this function never returns NULL). */ | |
608 | ||
609 | struct frame_info * | |
fba45db2 | 610 | parse_frame_specification (char *frame_exp) |
c906108c SS |
611 | { |
612 | int numargs = 0; | |
613 | #define MAXARGS 4 | |
614 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 615 | int level; |
c5aa993b | 616 | |
c906108c SS |
617 | if (frame_exp) |
618 | { | |
619 | char *addr_string, *p; | |
620 | struct cleanup *tmp_cleanup; | |
621 | ||
c5aa993b JM |
622 | while (*frame_exp == ' ') |
623 | frame_exp++; | |
c906108c SS |
624 | |
625 | while (*frame_exp) | |
626 | { | |
627 | if (numargs > MAXARGS) | |
628 | error ("Too many args in frame specification"); | |
629 | /* Parse an argument. */ | |
c5aa993b | 630 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 631 | ; |
c5aa993b | 632 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
633 | |
634 | { | |
3d6d86c6 | 635 | struct value *vp; |
ec9a3449 | 636 | |
b8c9b27d | 637 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 638 | |
24285e3a | 639 | /* NOTE: we call parse_and_eval and then both |
1aa20aa8 | 640 | value_as_long and value_as_address rather than calling |
24285e3a DT |
641 | parse_and_eval_long and parse_and_eval_address because |
642 | of the issue of potential side effects from evaluating | |
643 | the expression. */ | |
ec9a3449 DT |
644 | vp = parse_and_eval (addr_string); |
645 | if (numargs == 0) | |
646 | level = value_as_long (vp); | |
647 | ||
1aa20aa8 | 648 | args[numargs++] = value_as_address (vp); |
c906108c SS |
649 | do_cleanups (tmp_cleanup); |
650 | } | |
651 | ||
652 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
653 | while (*p == ' ') |
654 | p++; | |
c906108c SS |
655 | frame_exp = p; |
656 | } | |
657 | } | |
658 | ||
659 | switch (numargs) | |
660 | { | |
661 | case 0: | |
662 | if (selected_frame == NULL) | |
663 | error ("No selected frame."); | |
664 | return selected_frame; | |
665 | /* NOTREACHED */ | |
666 | case 1: | |
667 | { | |
c906108c | 668 | struct frame_info *fid = |
c5aa993b | 669 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
670 | struct frame_info *tfid; |
671 | ||
672 | if (level == 0) | |
673 | /* find_relative_frame was successful */ | |
674 | return fid; | |
675 | ||
676 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
677 | take at least 2 addresses. It is important to detect this case | |
678 | here so that "frame 100" does not give a confusing error message | |
679 | like "frame specification requires two addresses". This of course | |
680 | does not solve the "frame 100" problem for machines on which | |
681 | a frame specification can be made with one address. To solve | |
682 | that, we need a new syntax for a specifying a frame by address. | |
683 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
684 | two args, etc.), but people might think that is too much typing, | |
685 | so I guess *0x23,0x45 would be a possible alternative (commas | |
686 | really should be used instead of spaces to delimit; using spaces | |
687 | normally works in an expression). */ | |
688 | #ifdef SETUP_ARBITRARY_FRAME | |
823ca731 | 689 | error ("No frame %s", paddr_d (args[0])); |
c906108c SS |
690 | #endif |
691 | ||
692 | /* If (s)he specifies the frame with an address, he deserves what | |
693 | (s)he gets. Still, give the highest one that matches. */ | |
694 | ||
695 | for (fid = get_current_frame (); | |
696 | fid && fid->frame != args[0]; | |
697 | fid = get_prev_frame (fid)) | |
698 | ; | |
699 | ||
700 | if (fid) | |
701 | while ((tfid = get_prev_frame (fid)) && | |
702 | (tfid->frame == args[0])) | |
703 | fid = tfid; | |
c5aa993b | 704 | |
c906108c SS |
705 | /* We couldn't identify the frame as an existing frame, but |
706 | perhaps we can create one with a single argument. */ | |
707 | } | |
708 | ||
c5aa993b | 709 | default: |
c906108c SS |
710 | #ifdef SETUP_ARBITRARY_FRAME |
711 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
712 | #else | |
713 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 714 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
715 | if (numargs == 1) |
716 | return create_new_frame (args[0], 0); | |
717 | error ("Too many args in frame specification"); | |
718 | #endif | |
719 | /* NOTREACHED */ | |
720 | } | |
721 | /* NOTREACHED */ | |
722 | } | |
723 | ||
724 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
725 | that if it is unsure about the answer, it returns 0 | |
726 | instead of guessing (this happens on the VAX and i960, for example). | |
727 | ||
728 | On most machines, we never have to guess about the args address, | |
729 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
730 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
731 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
732 | #endif | |
733 | ||
734 | /* Print verbosely the selected frame or the frame at address ADDR. | |
735 | This means absolutely all information in the frame is printed. */ | |
736 | ||
737 | static void | |
fba45db2 | 738 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
739 | { |
740 | struct frame_info *fi; | |
741 | struct symtab_and_line sal; | |
742 | struct symbol *func; | |
743 | struct symtab *s; | |
744 | struct frame_info *calling_frame_info; | |
745 | int i, count, numregs; | |
746 | char *funname = 0; | |
747 | enum language funlang = language_unknown; | |
748 | ||
749 | if (!target_has_stack) | |
750 | error ("No stack."); | |
751 | ||
752 | fi = parse_frame_specification (addr_exp); | |
753 | if (fi == NULL) | |
754 | error ("Invalid frame specified."); | |
755 | ||
1058bca7 | 756 | find_frame_sal (fi, &sal); |
c906108c | 757 | func = get_frame_function (fi); |
1058bca7 AC |
758 | /* FIXME: cagney/2002-11-28: Why bother? Won't sal.symtab contain |
759 | the same value. */ | |
c5aa993b | 760 | s = find_pc_symtab (fi->pc); |
c906108c SS |
761 | if (func) |
762 | { | |
763 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
764 | * the demangled name that we already have stored in | |
765 | * the symbol table, but we stored a version with | |
766 | * DMGL_PARAMS turned on, and here we don't want | |
767 | * to display parameters. So call the demangler again, | |
768 | * with DMGL_ANSI only. RT | |
769 | * (Yes, I know that printf_symbol_filtered() will | |
770 | * again try to demangle the name on the fly, but | |
771 | * the issue is that if cplus_demangle() fails here, | |
772 | * it'll fail there too. So we want to catch the failure | |
773 | * ("demangled==NULL" case below) here, while we still | |
774 | * have our hands on the function symbol.) | |
775 | */ | |
c5aa993b JM |
776 | char *demangled; |
777 | funname = SYMBOL_NAME (func); | |
778 | funlang = SYMBOL_LANGUAGE (func); | |
779 | if (funlang == language_cplus) | |
780 | { | |
781 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
782 | /* If the demangler fails, try the demangled name | |
783 | * from the symbol table. This'll have parameters, | |
784 | * but that's preferable to diplaying a mangled name. | |
785 | */ | |
786 | if (demangled == NULL) | |
787 | funname = SYMBOL_SOURCE_NAME (func); | |
788 | } | |
c906108c SS |
789 | } |
790 | else | |
791 | { | |
792 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
793 | if (msymbol != NULL) | |
794 | { | |
795 | funname = SYMBOL_NAME (msymbol); | |
796 | funlang = SYMBOL_LANGUAGE (msymbol); | |
797 | } | |
798 | } | |
799 | calling_frame_info = get_prev_frame (fi); | |
800 | ||
b31da25e | 801 | if (!addr_exp && frame_relative_level (selected_frame) >= 0) |
c906108c | 802 | { |
b31da25e AC |
803 | printf_filtered ("Stack level %d, frame at ", |
804 | frame_relative_level (selected_frame)); | |
c906108c SS |
805 | print_address_numeric (fi->frame, 1, gdb_stdout); |
806 | printf_filtered (":\n"); | |
807 | } | |
808 | else | |
809 | { | |
810 | printf_filtered ("Stack frame at "); | |
811 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
812 | printf_filtered (":\n"); | |
813 | } | |
814 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
815 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
816 | ||
817 | wrap_here (" "); | |
818 | if (funname) | |
819 | { | |
820 | printf_filtered (" in "); | |
821 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
822 | DMGL_ANSI | DMGL_PARAMS); | |
823 | } | |
824 | wrap_here (" "); | |
825 | if (sal.symtab) | |
826 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
827 | puts_filtered ("; "); | |
828 | wrap_here (" "); | |
829 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
f18c5a73 | 830 | print_address_numeric (frame_pc_unwind (fi), 1, gdb_stdout); |
c906108c SS |
831 | printf_filtered ("\n"); |
832 | ||
833 | { | |
392a587b JM |
834 | int frameless; |
835 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
836 | if (frameless) |
837 | printf_filtered (" (FRAMELESS),"); | |
838 | } | |
839 | ||
840 | if (calling_frame_info) | |
841 | { | |
842 | printf_filtered (" called by frame at "); | |
843 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
844 | } | |
845 | if (fi->next && calling_frame_info) | |
846 | puts_filtered (","); | |
847 | wrap_here (" "); | |
848 | if (fi->next) | |
849 | { | |
850 | printf_filtered (" caller of frame at "); | |
851 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
852 | } | |
853 | if (fi->next || calling_frame_info) | |
854 | puts_filtered ("\n"); | |
855 | if (s) | |
1058bca7 AC |
856 | printf_filtered (" source language %s.\n", |
857 | language_str (s->language)); | |
c906108c SS |
858 | |
859 | #ifdef PRINT_EXTRA_FRAME_INFO | |
860 | PRINT_EXTRA_FRAME_INFO (fi); | |
861 | #endif | |
862 | ||
863 | { | |
864 | /* Address of the argument list for this frame, or 0. */ | |
865 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
866 | /* Number of args for this frame, or -1 if unknown. */ | |
867 | int numargs; | |
868 | ||
869 | if (arg_list == 0) | |
870 | printf_filtered (" Arglist at unknown address.\n"); | |
871 | else | |
872 | { | |
873 | printf_filtered (" Arglist at "); | |
874 | print_address_numeric (arg_list, 1, gdb_stdout); | |
875 | printf_filtered (","); | |
876 | ||
392a587b | 877 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
878 | if (numargs < 0) |
879 | puts_filtered (" args: "); | |
880 | else if (numargs == 0) | |
881 | puts_filtered (" no args."); | |
882 | else if (numargs == 1) | |
883 | puts_filtered (" 1 arg: "); | |
884 | else | |
885 | printf_filtered (" %d args: ", numargs); | |
886 | print_frame_args (func, fi, numargs, gdb_stdout); | |
887 | puts_filtered ("\n"); | |
888 | } | |
889 | } | |
890 | { | |
891 | /* Address of the local variables for this frame, or 0. */ | |
892 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
893 | ||
894 | if (arg_list == 0) | |
895 | printf_filtered (" Locals at unknown address,"); | |
896 | else | |
897 | { | |
898 | printf_filtered (" Locals at "); | |
899 | print_address_numeric (arg_list, 1, gdb_stdout); | |
900 | printf_filtered (","); | |
901 | } | |
902 | } | |
903 | ||
4f460812 AC |
904 | if (fi->saved_regs == NULL) |
905 | FRAME_INIT_SAVED_REGS (fi); | |
906 | /* Print as much information as possible on the location of all the | |
907 | registers. */ | |
908 | { | |
909 | enum lval_type lval; | |
910 | int optimized; | |
911 | CORE_ADDR addr; | |
912 | int realnum; | |
913 | int count; | |
914 | int i; | |
915 | int need_nl = 1; | |
916 | ||
917 | /* The sp is special; what's displayed isn't the save address, but | |
918 | the value of the previous frame's sp. This is a legacy thing, | |
919 | at one stage the frame cached the previous frame's SP instead | |
920 | of its address, hence it was easiest to just display the cached | |
921 | value. */ | |
922 | if (SP_REGNUM >= 0) | |
923 | { | |
924 | /* Find out the location of the saved stack pointer with out | |
925 | actually evaluating it. */ | |
926 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
927 | &realnum, NULL); | |
928 | if (!optimized && lval == not_lval) | |
c906108c | 929 | { |
4f460812 AC |
930 | void *value = alloca (MAX_REGISTER_RAW_SIZE); |
931 | CORE_ADDR sp; | |
932 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
933 | &realnum, value); | |
934 | sp = extract_address (value, REGISTER_RAW_SIZE (SP_REGNUM)); | |
935 | printf_filtered (" Previous frame's sp is "); | |
936 | print_address_numeric (sp, 1, gdb_stdout); | |
937 | printf_filtered ("\n"); | |
938 | need_nl = 0; | |
c906108c | 939 | } |
4f460812 AC |
940 | else if (!optimized && lval == lval_memory) |
941 | { | |
942 | printf_filtered (" Previous frame's sp at "); | |
943 | print_address_numeric (addr, 1, gdb_stdout); | |
944 | printf_filtered ("\n"); | |
945 | need_nl = 0; | |
946 | } | |
947 | else if (!optimized && lval == lval_register) | |
948 | { | |
949 | printf_filtered (" Previous frame's sp in %s\n", | |
950 | REGISTER_NAME (realnum)); | |
951 | need_nl = 0; | |
952 | } | |
953 | /* else keep quiet. */ | |
954 | } | |
955 | ||
956 | count = 0; | |
957 | numregs = NUM_REGS + NUM_PSEUDO_REGS; | |
958 | for (i = 0; i < numregs; i++) | |
959 | if (i != SP_REGNUM) | |
960 | { | |
961 | /* Find out the location of the saved register without | |
962 | fetching the corresponding value. */ | |
963 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
964 | NULL); | |
965 | /* For moment, only display registers that were saved on the | |
966 | stack. */ | |
967 | if (!optimized && lval == lval_memory) | |
968 | { | |
969 | if (count == 0) | |
970 | puts_filtered (" Saved registers:\n "); | |
971 | else | |
972 | puts_filtered (","); | |
973 | wrap_here (" "); | |
974 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
975 | print_address_numeric (addr, 1, gdb_stdout); | |
976 | count++; | |
977 | } | |
978 | } | |
979 | if (count || need_nl) | |
c906108c | 980 | puts_filtered ("\n"); |
4f460812 | 981 | } |
c906108c SS |
982 | } |
983 | ||
984 | #if 0 | |
985 | /* Set a limit on the number of frames printed by default in a | |
986 | backtrace. */ | |
987 | ||
988 | static int backtrace_limit; | |
989 | ||
990 | static void | |
fba45db2 | 991 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 992 | { |
bb518678 | 993 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
994 | |
995 | if (count < 0) | |
996 | error ("Negative argument not meaningful as backtrace limit."); | |
997 | ||
998 | backtrace_limit = count; | |
999 | } | |
1000 | ||
1001 | static void | |
fba45db2 | 1002 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1003 | { |
1004 | if (arg) | |
1005 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1006 | ||
1007 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1008 | } | |
1009 | #endif | |
1010 | ||
1011 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1012 | ||
a14ed312 KB |
1013 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1014 | int from_tty); | |
c906108c | 1015 | static void |
fba45db2 | 1016 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1017 | { |
1018 | struct frame_info *fi; | |
1019 | register int count; | |
1020 | register int i; | |
1021 | register struct frame_info *trailing; | |
1022 | register int trailing_level; | |
1023 | ||
1024 | if (!target_has_stack) | |
1025 | error ("No stack."); | |
1026 | ||
1027 | /* The following code must do two things. First, it must | |
1028 | set the variable TRAILING to the frame from which we should start | |
1029 | printing. Second, it must set the variable count to the number | |
1030 | of frames which we should print, or -1 if all of them. */ | |
1031 | trailing = get_current_frame (); | |
d082b2bb AC |
1032 | |
1033 | /* The target can be in a state where there is no valid frames | |
1034 | (e.g., just connected). */ | |
1035 | if (trailing == NULL) | |
1036 | error ("No stack."); | |
1037 | ||
c906108c SS |
1038 | trailing_level = 0; |
1039 | if (count_exp) | |
1040 | { | |
bb518678 | 1041 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1042 | if (count < 0) |
1043 | { | |
1044 | struct frame_info *current; | |
1045 | ||
1046 | count = -count; | |
1047 | ||
1048 | current = trailing; | |
1049 | while (current && count--) | |
1050 | { | |
1051 | QUIT; | |
1052 | current = get_prev_frame (current); | |
1053 | } | |
c5aa993b | 1054 | |
c906108c SS |
1055 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1056 | will be COUNT below it. */ | |
1057 | while (current) | |
1058 | { | |
1059 | QUIT; | |
1060 | trailing = get_prev_frame (trailing); | |
1061 | current = get_prev_frame (current); | |
1062 | trailing_level++; | |
1063 | } | |
c5aa993b | 1064 | |
c906108c SS |
1065 | count = -1; |
1066 | } | |
1067 | } | |
1068 | else | |
1069 | count = -1; | |
1070 | ||
1071 | if (info_verbose) | |
1072 | { | |
1073 | struct partial_symtab *ps; | |
c5aa993b | 1074 | |
c906108c | 1075 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1076 | a separate pass so that "Reading in symbols for xxx" messages |
1077 | don't screw up the appearance of the backtrace. Also | |
1078 | if people have strong opinions against reading symbols for | |
1079 | backtrace this may have to be an option. */ | |
c906108c SS |
1080 | i = count; |
1081 | for (fi = trailing; | |
1082 | fi != NULL && i--; | |
1083 | fi = get_prev_frame (fi)) | |
1084 | { | |
1085 | QUIT; | |
6f0eaa01 | 1086 | ps = find_pc_psymtab (frame_address_in_block (fi)); |
c906108c SS |
1087 | if (ps) |
1088 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | for (i = 0, fi = trailing; | |
1093 | fi && count--; | |
1094 | i++, fi = get_prev_frame (fi)) | |
1095 | { | |
1096 | QUIT; | |
1097 | ||
1098 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1099 | means further attempts to backtrace would fail (on the other |
1100 | hand, perhaps the code does or could be fixed to make sure | |
1101 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1102 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1103 | if (show_locals) | |
c5aa993b | 1104 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1105 | } |
1106 | ||
1107 | /* If we've stopped before the end, mention that. */ | |
1108 | if (fi && from_tty) | |
1109 | printf_filtered ("(More stack frames follow...)\n"); | |
1110 | } | |
1111 | ||
1112 | static void | |
fba45db2 | 1113 | backtrace_command (char *arg, int from_tty) |
c906108c | 1114 | { |
c5aa993b JM |
1115 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1116 | char **argv = (char **) NULL; | |
1117 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1118 | char *argPtr = arg; | |
c906108c | 1119 | |
c5aa993b | 1120 | if (arg != (char *) NULL) |
c906108c SS |
1121 | { |
1122 | int i; | |
1123 | ||
c5aa993b | 1124 | argv = buildargv (arg); |
7a292a7a | 1125 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1126 | argc = 0; |
c5aa993b JM |
1127 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1128 | { | |
745b8ca0 | 1129 | unsigned int j; |
c5aa993b JM |
1130 | |
1131 | for (j = 0; (j < strlen (argv[i])); j++) | |
1132 | argv[i][j] = tolower (argv[i][j]); | |
1133 | ||
1134 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1135 | argIndicatingFullTrace = argc; | |
1136 | else | |
1137 | { | |
1138 | argc++; | |
1139 | totArgLen += strlen (argv[i]); | |
1140 | } | |
1141 | } | |
c906108c SS |
1142 | totArgLen += argc; |
1143 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1144 | { |
1145 | if (totArgLen > 0) | |
1146 | { | |
1147 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1148 | if (!argPtr) | |
1149 | nomem (0); | |
1150 | else | |
1151 | { | |
1152 | memset (argPtr, 0, totArgLen + 1); | |
1153 | for (i = 0; (i < (argc + 1)); i++) | |
1154 | { | |
1155 | if (i != argIndicatingFullTrace) | |
1156 | { | |
1157 | strcat (argPtr, argv[i]); | |
1158 | strcat (argPtr, " "); | |
1159 | } | |
1160 | } | |
1161 | } | |
1162 | } | |
1163 | else | |
1164 | argPtr = (char *) NULL; | |
1165 | } | |
c906108c SS |
1166 | } |
1167 | ||
1168 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1169 | ||
1170 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1171 | xfree (argPtr); |
c906108c SS |
1172 | |
1173 | if (old_chain) | |
c5aa993b | 1174 | do_cleanups (old_chain); |
c906108c SS |
1175 | } |
1176 | ||
a14ed312 | 1177 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1178 | static void |
fba45db2 | 1179 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1180 | { |
1181 | backtrace_command_1 (arg, 1, from_tty); | |
1182 | } | |
c906108c | 1183 | \f |
c5aa993b | 1184 | |
c906108c SS |
1185 | /* Print the local variables of a block B active in FRAME. |
1186 | Return 1 if any variables were printed; 0 otherwise. */ | |
1187 | ||
1188 | static int | |
fba45db2 KB |
1189 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1190 | int num_tabs, register struct ui_file *stream) | |
c906108c | 1191 | { |
c906108c SS |
1192 | register int i, j; |
1193 | register struct symbol *sym; | |
1194 | register int values_printed = 0; | |
1195 | ||
e88c90f2 | 1196 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1197 | { |
c906108c SS |
1198 | switch (SYMBOL_CLASS (sym)) |
1199 | { | |
1200 | case LOC_LOCAL: | |
1201 | case LOC_REGISTER: | |
1202 | case LOC_STATIC: | |
1203 | case LOC_BASEREG: | |
1204 | values_printed = 1; | |
1205 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1206 | fputs_filtered ("\t", stream); |
c906108c SS |
1207 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1208 | fputs_filtered (" = ", stream); | |
1209 | print_variable_value (sym, fi, stream); | |
1210 | fprintf_filtered (stream, "\n"); | |
1211 | break; | |
1212 | ||
1213 | default: | |
1214 | /* Ignore symbols which are not locals. */ | |
1215 | break; | |
1216 | } | |
1217 | } | |
1218 | return values_printed; | |
1219 | } | |
1220 | ||
1221 | /* Same, but print labels. */ | |
1222 | ||
1223 | static int | |
fba45db2 KB |
1224 | print_block_frame_labels (struct block *b, int *have_default, |
1225 | register struct ui_file *stream) | |
c906108c | 1226 | { |
c906108c SS |
1227 | register int i; |
1228 | register struct symbol *sym; | |
1229 | register int values_printed = 0; | |
1230 | ||
e88c90f2 | 1231 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1232 | { |
c906108c SS |
1233 | if (STREQ (SYMBOL_NAME (sym), "default")) |
1234 | { | |
1235 | if (*have_default) | |
1236 | continue; | |
1237 | *have_default = 1; | |
1238 | } | |
1239 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1240 | { | |
1241 | struct symtab_and_line sal; | |
1242 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1243 | values_printed = 1; | |
1244 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1245 | if (addressprint) | |
1246 | { | |
1247 | fprintf_filtered (stream, " "); | |
1248 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1249 | } | |
1250 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1251 | sal.symtab->filename, sal.line); | |
1252 | } | |
1253 | } | |
1254 | return values_printed; | |
1255 | } | |
1256 | ||
1257 | /* Print on STREAM all the local variables in frame FRAME, | |
1258 | including all the blocks active in that frame | |
1259 | at its current pc. | |
1260 | ||
1261 | Returns 1 if the job was done, | |
1262 | or 0 if nothing was printed because we have no info | |
1263 | on the function running in FRAME. */ | |
1264 | ||
1265 | static void | |
fba45db2 KB |
1266 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1267 | register struct ui_file *stream) | |
c906108c | 1268 | { |
ae767bfb | 1269 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1270 | register int values_printed = 0; |
1271 | ||
1272 | if (block == 0) | |
1273 | { | |
1274 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1275 | return; | |
1276 | } | |
c5aa993b | 1277 | |
c906108c SS |
1278 | while (block != 0) |
1279 | { | |
1280 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1281 | values_printed = 1; | |
1282 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1283 | Don't continue to its superblock, the block of |
1284 | per-file symbols. */ | |
c906108c SS |
1285 | if (BLOCK_FUNCTION (block)) |
1286 | break; | |
1287 | block = BLOCK_SUPERBLOCK (block); | |
1288 | } | |
1289 | ||
1290 | if (!values_printed) | |
1291 | { | |
1292 | fprintf_filtered (stream, "No locals.\n"); | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | /* Same, but print labels. */ | |
1297 | ||
1298 | static void | |
fba45db2 KB |
1299 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1300 | register struct ui_file *stream) | |
c906108c SS |
1301 | { |
1302 | register struct blockvector *bl; | |
ae767bfb | 1303 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1304 | register int values_printed = 0; |
1305 | int index, have_default = 0; | |
1306 | char *blocks_printed; | |
1307 | CORE_ADDR pc = fi->pc; | |
1308 | ||
1309 | if (block == 0) | |
1310 | { | |
1311 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1312 | return; | |
1313 | } | |
1314 | ||
1315 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1316 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1317 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1318 | ||
1319 | while (block != 0) | |
1320 | { | |
1321 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1322 | int last_index; | |
1323 | ||
1324 | if (bl != blockvector_for_pc (end, &index)) | |
1325 | error ("blockvector blotch"); | |
1326 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1327 | error ("blockvector botch"); | |
1328 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1329 | index += 1; | |
1330 | ||
1331 | /* Don't print out blocks that have gone by. */ | |
1332 | while (index < last_index | |
1333 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1334 | index++; | |
1335 | ||
1336 | while (index < last_index | |
1337 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1338 | { | |
1339 | if (blocks_printed[index] == 0) | |
1340 | { | |
1341 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1342 | values_printed = 1; | |
1343 | blocks_printed[index] = 1; | |
1344 | } | |
1345 | index++; | |
1346 | } | |
1347 | if (have_default) | |
1348 | return; | |
1349 | if (values_printed && this_level_only) | |
1350 | return; | |
1351 | ||
1352 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1353 | Don't continue to its superblock, the block of |
1354 | per-file symbols. */ | |
c906108c SS |
1355 | if (BLOCK_FUNCTION (block)) |
1356 | break; | |
1357 | block = BLOCK_SUPERBLOCK (block); | |
1358 | } | |
1359 | ||
1360 | if (!values_printed && !this_level_only) | |
1361 | { | |
1362 | fprintf_filtered (stream, "No catches.\n"); | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | /* ARGSUSED */ | |
1367 | void | |
fba45db2 | 1368 | locals_info (char *args, int from_tty) |
c906108c SS |
1369 | { |
1370 | if (!selected_frame) | |
1371 | error ("No frame selected."); | |
1372 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1373 | } | |
1374 | ||
1375 | static void | |
fba45db2 | 1376 | catch_info (char *ignore, int from_tty) |
c906108c | 1377 | { |
c5aa993b | 1378 | struct symtab_and_line *sal; |
c906108c | 1379 | |
c5aa993b | 1380 | /* Check for target support for exception handling */ |
c906108c SS |
1381 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1382 | if (sal) | |
1383 | { | |
1384 | /* Currently not handling this */ | |
1385 | /* Ideally, here we should interact with the C++ runtime | |
1386 | system to find the list of active handlers, etc. */ | |
1387 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1388 | #if 0 | |
c5aa993b JM |
1389 | if (!selected_frame) |
1390 | error ("No frame selected."); | |
c906108c SS |
1391 | #endif |
1392 | } | |
1393 | else | |
1394 | { | |
c5aa993b | 1395 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1396 | if (!selected_frame) |
c5aa993b JM |
1397 | error ("No frame selected."); |
1398 | ||
c906108c SS |
1399 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1400 | } | |
1401 | } | |
1402 | ||
1403 | static void | |
fba45db2 KB |
1404 | print_frame_arg_vars (register struct frame_info *fi, |
1405 | register struct ui_file *stream) | |
c906108c SS |
1406 | { |
1407 | struct symbol *func = get_frame_function (fi); | |
1408 | register struct block *b; | |
c906108c SS |
1409 | register int i; |
1410 | register struct symbol *sym, *sym2; | |
1411 | register int values_printed = 0; | |
1412 | ||
1413 | if (func == 0) | |
1414 | { | |
1415 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1416 | return; | |
1417 | } | |
1418 | ||
1419 | b = SYMBOL_BLOCK_VALUE (func); | |
e88c90f2 | 1420 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1421 | { |
c906108c SS |
1422 | switch (SYMBOL_CLASS (sym)) |
1423 | { | |
1424 | case LOC_ARG: | |
1425 | case LOC_LOCAL_ARG: | |
1426 | case LOC_REF_ARG: | |
1427 | case LOC_REGPARM: | |
1428 | case LOC_REGPARM_ADDR: | |
1429 | case LOC_BASEREG_ARG: | |
1430 | values_printed = 1; | |
1431 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1432 | fputs_filtered (" = ", stream); | |
1433 | ||
1434 | /* We have to look up the symbol because arguments can have | |
1435 | two entries (one a parameter, one a local) and the one we | |
1436 | want is the local, which lookup_symbol will find for us. | |
1437 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1438 | small structure and gcc2 when the argument type is float | |
1439 | and it is passed as a double and converted to float by | |
1440 | the prologue (in the latter case the type of the LOC_ARG | |
1441 | symbol is double and the type of the LOC_LOCAL symbol is | |
1442 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1443 | are not combined in symbol-reading. */ | |
1444 | ||
1445 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1446 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1447 | print_variable_value (sym2, fi, stream); |
1448 | fprintf_filtered (stream, "\n"); | |
1449 | break; | |
1450 | ||
1451 | default: | |
1452 | /* Don't worry about things which aren't arguments. */ | |
1453 | break; | |
1454 | } | |
1455 | } | |
c906108c SS |
1456 | if (!values_printed) |
1457 | { | |
1458 | fprintf_filtered (stream, "No arguments.\n"); | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | void | |
fba45db2 | 1463 | args_info (char *ignore, int from_tty) |
c906108c SS |
1464 | { |
1465 | if (!selected_frame) | |
1466 | error ("No frame selected."); | |
1467 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1468 | } | |
1469 | ||
1470 | ||
1471 | static void | |
fba45db2 | 1472 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1473 | { |
c5aa993b JM |
1474 | args_info (ignore, from_tty); |
1475 | locals_info (ignore, from_tty); | |
c906108c | 1476 | } |
c906108c | 1477 | \f |
c5aa993b | 1478 | |
0f7d239c | 1479 | /* Select frame FI (or NULL - to invalidate the current frame). */ |
c906108c SS |
1480 | |
1481 | void | |
0f7d239c | 1482 | select_frame (struct frame_info *fi) |
c906108c SS |
1483 | { |
1484 | register struct symtab *s; | |
1485 | ||
1486 | selected_frame = fi; | |
0f7d239c AC |
1487 | /* NOTE: cagney/2002-05-04: FI can be NULL. This occures when the |
1488 | frame is being invalidated. */ | |
c906108c | 1489 | if (selected_frame_level_changed_hook) |
0f7d239c | 1490 | selected_frame_level_changed_hook (frame_relative_level (fi)); |
c906108c | 1491 | |
bfb3754e KS |
1492 | /* FIXME: kseitz/2002-08-28: It would be nice to call |
1493 | selected_frame_level_changed_event right here, but due to limitations | |
1494 | in the current interfaces, we would end up flooding UIs with events | |
1495 | because select_frame is used extensively internally. | |
1496 | ||
1497 | Once we have frame-parameterized frame (and frame-related) commands, | |
1498 | the event notification can be moved here, since this function will only | |
1499 | be called when the users selected frame is being changed. */ | |
1500 | ||
c906108c SS |
1501 | /* Ensure that symbols for this frame are read in. Also, determine the |
1502 | source language of this frame, and switch to it if desired. */ | |
1503 | if (fi) | |
c5aa993b JM |
1504 | { |
1505 | s = find_pc_symtab (fi->pc); | |
1506 | if (s | |
1507 | && s->language != current_language->la_language | |
1508 | && s->language != language_unknown | |
1509 | && language_mode == language_mode_auto) | |
1510 | { | |
1511 | set_language (s->language); | |
1512 | } | |
c906108c | 1513 | } |
c906108c | 1514 | } |
c906108c | 1515 | \f |
c5aa993b | 1516 | |
0f7d239c AC |
1517 | /* Select frame FI. Also print the stack frame and show the source if |
1518 | this is the tui version. */ | |
bedfa57b AC |
1519 | static void |
1520 | select_and_print_frame (struct frame_info *fi) | |
c906108c | 1521 | { |
0f7d239c | 1522 | select_frame (fi); |
c906108c SS |
1523 | if (fi) |
1524 | { | |
bedfa57b | 1525 | print_stack_frame (fi, frame_relative_level (fi), 1); |
c906108c SS |
1526 | } |
1527 | } | |
c906108c | 1528 | \f |
c906108c | 1529 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1530 | Can return zero under various legitimate circumstances. |
1531 | ||
1532 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1533 | code address within the block returned. We use this to decide | |
1534 | which macros are in scope. */ | |
c906108c SS |
1535 | |
1536 | struct block * | |
ae767bfb | 1537 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1538 | { |
1539 | if (!target_has_stack) | |
1540 | return 0; | |
1541 | ||
8c69fc49 AC |
1542 | /* NOTE: cagney/2002-11-28: Why go to all this effort to not create |
1543 | a selected/current frame? Perhaphs this function is called, | |
1544 | indirectly, by WFI in "infrun.c" where avoiding the creation of | |
1545 | an inner most frame is very important (it slows down single | |
1546 | step). I suspect, though that this was true in the deep dark | |
1547 | past but is no longer the case. A mindless look at all the | |
1548 | callers tends to support this theory. I think we should be able | |
1549 | to assume that there is always a selcted frame. */ | |
1550 | /* gdb_assert (selected_frame != NULL); So, do you feel lucky? */ | |
c906108c | 1551 | if (!selected_frame) |
8c69fc49 AC |
1552 | { |
1553 | CORE_ADDR pc = read_pc (); | |
1554 | if (addr_in_block != NULL) | |
1555 | *addr_in_block = pc; | |
1556 | return block_for_pc (pc); | |
1557 | } | |
ae767bfb | 1558 | return get_frame_block (selected_frame, addr_in_block); |
c906108c SS |
1559 | } |
1560 | ||
1561 | /* Find a frame a certain number of levels away from FRAME. | |
1562 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1563 | Positive means go to earlier frames (up); negative, the reverse. | |
1564 | The int that contains the number of levels is counted toward | |
1565 | zero as the frames for those levels are found. | |
1566 | If the top or bottom frame is reached, that frame is returned, | |
1567 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1568 | how much farther the original request asked to go. */ | |
1569 | ||
1570 | struct frame_info * | |
fba45db2 KB |
1571 | find_relative_frame (register struct frame_info *frame, |
1572 | register int *level_offset_ptr) | |
c906108c SS |
1573 | { |
1574 | register struct frame_info *prev; | |
1575 | register struct frame_info *frame1; | |
1576 | ||
1577 | /* Going up is simple: just do get_prev_frame enough times | |
1578 | or until initial frame is reached. */ | |
1579 | while (*level_offset_ptr > 0) | |
1580 | { | |
1581 | prev = get_prev_frame (frame); | |
1582 | if (prev == 0) | |
1583 | break; | |
1584 | (*level_offset_ptr)--; | |
1585 | frame = prev; | |
1586 | } | |
1587 | /* Going down is just as simple. */ | |
1588 | if (*level_offset_ptr < 0) | |
1589 | { | |
c5aa993b JM |
1590 | while (*level_offset_ptr < 0) |
1591 | { | |
1592 | frame1 = get_next_frame (frame); | |
1593 | if (!frame1) | |
1594 | break; | |
1595 | frame = frame1; | |
1596 | (*level_offset_ptr)++; | |
1597 | } | |
c906108c SS |
1598 | } |
1599 | return frame; | |
1600 | } | |
1601 | ||
1602 | /* The "select_frame" command. With no arg, NOP. | |
1603 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1604 | valid level. Otherwise, treat level_exp as an address expression | |
1605 | and select it. See parse_frame_specification for more info on proper | |
1606 | frame expressions. */ | |
1607 | ||
1608 | /* ARGSUSED */ | |
8b93c638 | 1609 | void |
fba45db2 | 1610 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1611 | { |
1612 | select_frame_command (level_exp, from_tty); | |
1613 | } | |
8926118c | 1614 | |
c906108c | 1615 | static void |
fba45db2 | 1616 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1617 | { |
bfb3754e KS |
1618 | struct frame_info *frame; |
1619 | int level = frame_relative_level (selected_frame); | |
c906108c SS |
1620 | |
1621 | if (!target_has_stack) | |
1622 | error ("No stack."); | |
1623 | ||
1624 | frame = parse_frame_specification (level_exp); | |
1625 | ||
0f7d239c | 1626 | select_frame (frame); |
bfb3754e KS |
1627 | if (level != frame_relative_level (selected_frame)) |
1628 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); | |
c906108c SS |
1629 | } |
1630 | ||
1631 | /* The "frame" command. With no arg, print selected frame briefly. | |
1632 | With arg, behaves like select_frame and then prints the selected | |
1633 | frame. */ | |
1634 | ||
1635 | void | |
fba45db2 | 1636 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1637 | { |
1638 | select_frame_command (level_exp, from_tty); | |
b31da25e AC |
1639 | show_and_print_stack_frame (selected_frame, |
1640 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1641 | } |
1642 | ||
1643 | /* The XDB Compatibility command to print the current frame. */ | |
1644 | ||
7a292a7a | 1645 | static void |
fba45db2 | 1646 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1647 | { |
1648 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1649 | error ("No stack."); |
b31da25e AC |
1650 | print_only_stack_frame (selected_frame, |
1651 | frame_relative_level (selected_frame), 1); | |
7a292a7a | 1652 | } |
c906108c SS |
1653 | |
1654 | /* Select the frame up one or COUNT stack levels | |
1655 | from the previously selected frame, and print it briefly. */ | |
1656 | ||
1657 | /* ARGSUSED */ | |
1658 | static void | |
fba45db2 | 1659 | up_silently_base (char *count_exp) |
c906108c SS |
1660 | { |
1661 | register struct frame_info *fi; | |
1662 | int count = 1, count1; | |
1663 | if (count_exp) | |
bb518678 | 1664 | count = parse_and_eval_long (count_exp); |
c906108c | 1665 | count1 = count; |
c5aa993b | 1666 | |
c906108c SS |
1667 | if (target_has_stack == 0 || selected_frame == 0) |
1668 | error ("No stack."); | |
1669 | ||
1670 | fi = find_relative_frame (selected_frame, &count1); | |
1671 | if (count1 != 0 && count_exp == 0) | |
1672 | error ("Initial frame selected; you cannot go up."); | |
0f7d239c | 1673 | select_frame (fi); |
bfb3754e | 1674 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); |
c906108c SS |
1675 | } |
1676 | ||
1677 | static void | |
fba45db2 | 1678 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1679 | { |
c5aa993b | 1680 | up_silently_base (count_exp); |
c906108c SS |
1681 | } |
1682 | ||
1683 | static void | |
fba45db2 | 1684 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1685 | { |
1686 | up_silently_base (count_exp); | |
b31da25e AC |
1687 | show_and_print_stack_frame (selected_frame, |
1688 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1689 | } |
1690 | ||
1691 | /* Select the frame down one or COUNT stack levels | |
1692 | from the previously selected frame, and print it briefly. */ | |
1693 | ||
1694 | /* ARGSUSED */ | |
1695 | static void | |
fba45db2 | 1696 | down_silently_base (char *count_exp) |
c906108c SS |
1697 | { |
1698 | register struct frame_info *frame; | |
1699 | int count = -1, count1; | |
1700 | if (count_exp) | |
bb518678 | 1701 | count = -parse_and_eval_long (count_exp); |
c906108c | 1702 | count1 = count; |
c5aa993b | 1703 | |
c906108c SS |
1704 | if (target_has_stack == 0 || selected_frame == 0) |
1705 | error ("No stack."); | |
1706 | ||
1707 | frame = find_relative_frame (selected_frame, &count1); | |
1708 | if (count1 != 0 && count_exp == 0) | |
1709 | { | |
1710 | ||
1711 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1712 | means to really go down (and let me know if that is |
1713 | impossible), but "down 9999" can be used to mean go all the way | |
1714 | down without getting an error. */ | |
c906108c SS |
1715 | |
1716 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1717 | } | |
1718 | ||
0f7d239c | 1719 | select_frame (frame); |
bfb3754e | 1720 | selected_frame_level_changed_event (frame_relative_level (selected_frame)); |
c906108c SS |
1721 | } |
1722 | ||
1723 | /* ARGSUSED */ | |
1724 | static void | |
fba45db2 | 1725 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1726 | { |
1727 | down_silently_base (count_exp); | |
c906108c SS |
1728 | } |
1729 | ||
1730 | static void | |
fba45db2 | 1731 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1732 | { |
1733 | down_silently_base (count_exp); | |
b31da25e AC |
1734 | show_and_print_stack_frame (selected_frame, |
1735 | frame_relative_level (selected_frame), 1); | |
c906108c SS |
1736 | } |
1737 | \f | |
8b93c638 | 1738 | void |
fba45db2 | 1739 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1740 | { |
1741 | struct symbol *thisfun; | |
1742 | CORE_ADDR selected_frame_addr; | |
1743 | CORE_ADDR selected_frame_pc; | |
1744 | struct frame_info *frame; | |
3d6d86c6 | 1745 | struct value *return_value = NULL; |
c906108c SS |
1746 | |
1747 | if (selected_frame == NULL) | |
1748 | error ("No selected frame."); | |
1749 | thisfun = get_frame_function (selected_frame); | |
c193f6ac | 1750 | selected_frame_addr = get_frame_base (selected_frame); |
c906108c SS |
1751 | selected_frame_pc = selected_frame->pc; |
1752 | ||
1753 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1754 | ||
1755 | if (retval_exp) | |
1756 | { | |
1757 | struct type *return_type = NULL; | |
1758 | ||
1759 | return_value = parse_and_eval (retval_exp); | |
1760 | ||
1761 | /* Cast return value to the return type of the function. */ | |
1762 | if (thisfun != NULL) | |
1763 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1764 | if (return_type == NULL) | |
1765 | return_type = builtin_type_int; | |
1766 | return_value = value_cast (return_type, return_value); | |
1767 | ||
1768 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1769 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1770 | if (VALUE_LAZY (return_value)) |
1771 | value_fetch_lazy (return_value); | |
1772 | } | |
1773 | ||
1774 | /* If interactive, require confirmation. */ | |
1775 | ||
1776 | if (from_tty) | |
1777 | { | |
1778 | if (thisfun != 0) | |
1779 | { | |
1780 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1781 | { | |
1782 | error ("Not confirmed."); | |
1783 | /* NOTREACHED */ | |
1784 | } | |
1785 | } | |
c5aa993b JM |
1786 | else if (!query ("Make selected stack frame return now? ")) |
1787 | error ("Not confirmed."); | |
c906108c SS |
1788 | } |
1789 | ||
1790 | /* Do the real work. Pop until the specified frame is current. We | |
1791 | use this method because the selected_frame is not valid after | |
1792 | a POP_FRAME. The pc comparison makes this work even if the | |
1793 | selected frame shares its fp with another frame. */ | |
1794 | ||
c5aa993b | 1795 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1796 | || selected_frame_pc != frame->pc) |
1797 | POP_FRAME; | |
1798 | ||
1799 | /* Then pop that frame. */ | |
1800 | ||
1801 | POP_FRAME; | |
1802 | ||
1803 | /* Compute the return value (if any) and store in the place | |
1804 | for return values. */ | |
1805 | ||
1806 | if (retval_exp) | |
1807 | set_return_value (return_value); | |
1808 | ||
1a2aab69 PS |
1809 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1810 | ||
1811 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
c193f6ac | 1812 | get_frame_base (get_current_frame ()))) |
1a2aab69 PS |
1813 | POP_FRAME; |
1814 | ||
c906108c SS |
1815 | /* If interactive, print the frame that is now current. */ |
1816 | ||
1817 | if (from_tty) | |
1818 | frame_command ("0", 1); | |
1819 | else | |
1820 | select_frame_command ("0", 0); | |
1821 | } | |
1822 | ||
1823 | /* Sets the scope to input function name, provided that the | |
1824 | function is within the current stack frame */ | |
1825 | ||
1826 | struct function_bounds | |
1827 | { | |
1828 | CORE_ADDR low, high; | |
1829 | }; | |
1830 | ||
a14ed312 | 1831 | static void func_command (char *arg, int from_tty); |
c906108c | 1832 | static void |
fba45db2 | 1833 | func_command (char *arg, int from_tty) |
c906108c SS |
1834 | { |
1835 | struct frame_info *fp; | |
1836 | int found = 0; | |
1837 | struct symtabs_and_lines sals; | |
1838 | int i; | |
1839 | int level = 1; | |
1840 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1841 | ||
1842 | if (arg != (char *) NULL) | |
1843 | return; | |
1844 | ||
1845 | fp = parse_frame_specification ("0"); | |
1846 | sals = decode_line_spec (arg, 1); | |
1847 | func_bounds = (struct function_bounds *) xmalloc ( | |
1848 | sizeof (struct function_bounds) * sals.nelts); | |
1849 | for (i = 0; (i < sals.nelts && !found); i++) | |
1850 | { | |
1851 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1852 | find_pc_partial_function (sals.sals[i].pc, | |
1853 | (char **) NULL, | |
1854 | &func_bounds[i].low, | |
1855 | &func_bounds[i].high) == 0) | |
1856 | { | |
1857 | func_bounds[i].low = | |
1858 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | do | |
1863 | { | |
1864 | for (i = 0; (i < sals.nelts && !found); i++) | |
1865 | found = (fp->pc >= func_bounds[i].low && | |
1866 | fp->pc < func_bounds[i].high); | |
1867 | if (!found) | |
1868 | { | |
1869 | level = 1; | |
1870 | fp = find_relative_frame (fp, &level); | |
1871 | } | |
1872 | } | |
1873 | while (!found && level == 0); | |
1874 | ||
1875 | if (func_bounds) | |
b8c9b27d | 1876 | xfree (func_bounds); |
c906108c SS |
1877 | |
1878 | if (!found) | |
1879 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1880 | else if (fp != selected_frame) | |
bedfa57b | 1881 | select_and_print_frame (fp); |
c906108c SS |
1882 | } |
1883 | ||
1884 | /* Gets the language of the current frame. */ | |
1885 | ||
1886 | enum language | |
fba45db2 | 1887 | get_frame_language (void) |
c906108c SS |
1888 | { |
1889 | register struct symtab *s; | |
1890 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1891 | |
c906108c SS |
1892 | if (selected_frame) |
1893 | { | |
c5aa993b | 1894 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1895 | if (s) |
1896 | flang = s->language; | |
1897 | else | |
1898 | flang = language_unknown; | |
1899 | } | |
1900 | else | |
1901 | flang = language_unknown; | |
1902 | ||
1903 | return flang; | |
1904 | } | |
1905 | \f | |
1906 | void | |
fba45db2 | 1907 | _initialize_stack (void) |
c906108c | 1908 | { |
c5aa993b | 1909 | #if 0 |
c906108c SS |
1910 | backtrace_limit = 30; |
1911 | #endif | |
1912 | ||
1913 | add_com ("return", class_stack, return_command, | |
1914 | "Make selected stack frame return to its caller.\n\ | |
1915 | Control remains in the debugger, but when you continue\n\ | |
1916 | execution will resume in the frame above the one now selected.\n\ | |
1917 | If an argument is given, it is an expression for the value to return."); | |
1918 | ||
1919 | add_com ("up", class_stack, up_command, | |
1920 | "Select and print stack frame that called this one.\n\ | |
1921 | An argument says how many frames up to go."); | |
1922 | add_com ("up-silently", class_support, up_silently_command, | |
1923 | "Same as the `up' command, but does not print anything.\n\ | |
1924 | This is useful in command scripts."); | |
1925 | ||
1926 | add_com ("down", class_stack, down_command, | |
1927 | "Select and print stack frame called by this one.\n\ | |
1928 | An argument says how many frames down to go."); | |
1929 | add_com_alias ("do", "down", class_stack, 1); | |
1930 | add_com_alias ("dow", "down", class_stack, 1); | |
1931 | add_com ("down-silently", class_support, down_silently_command, | |
1932 | "Same as the `down' command, but does not print anything.\n\ | |
1933 | This is useful in command scripts."); | |
1934 | ||
1935 | add_com ("frame", class_stack, frame_command, | |
1936 | "Select and print a stack frame.\n\ | |
1937 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1938 | An argument specifies the frame to select.\n\ | |
1939 | It can be a stack frame number or the address of the frame.\n\ | |
1940 | With argument, nothing is printed if input is coming from\n\ | |
1941 | a command file or a user-defined command."); | |
1942 | ||
1943 | add_com_alias ("f", "frame", class_stack, 1); | |
1944 | ||
1945 | if (xdb_commands) | |
1946 | { | |
c5aa993b JM |
1947 | add_com ("L", class_stack, current_frame_command, |
1948 | "Print the current stack frame.\n"); | |
c906108c SS |
1949 | add_com_alias ("V", "frame", class_stack, 1); |
1950 | } | |
1951 | add_com ("select-frame", class_stack, select_frame_command, | |
1952 | "Select a stack frame without printing anything.\n\ | |
1953 | An argument specifies the frame to select.\n\ | |
1954 | It can be a stack frame number or the address of the frame.\n"); | |
1955 | ||
1956 | add_com ("backtrace", class_stack, backtrace_command, | |
1957 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1958 | With a negative argument, print outermost -COUNT frames.\n\ | |
1959 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1960 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1961 | if (xdb_commands) | |
1962 | { | |
1963 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1964 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1965 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1966 | and the values of the local variables.\n\ |
1967 | With a negative argument, print outermost -COUNT frames.\n\ | |
1968 | Usage: T <count>\n"); | |
1969 | } | |
1970 | ||
1971 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1972 | add_info ("stack", backtrace_command, | |
1973 | "Backtrace of the stack, or innermost COUNT frames."); | |
1974 | add_info_alias ("s", "stack", 1); | |
1975 | add_info ("frame", frame_info, | |
1976 | "All about selected stack frame, or frame at ADDR."); | |
1977 | add_info_alias ("f", "frame", 1); | |
1978 | add_info ("locals", locals_info, | |
1979 | "Local variables of current stack frame."); | |
1980 | add_info ("args", args_info, | |
1981 | "Argument variables of current stack frame."); | |
1982 | if (xdb_commands) | |
c5aa993b JM |
1983 | add_com ("l", class_info, args_plus_locals_info, |
1984 | "Argument and local variables of current stack frame."); | |
c906108c SS |
1985 | |
1986 | if (dbx_commands) | |
c5aa993b JM |
1987 | add_com ("func", class_stack, func_command, |
1988 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
1989 | |
1990 | add_info ("catch", catch_info, | |
1991 | "Exceptions that can be caught in the current stack frame."); | |
1992 | ||
1993 | #if 0 | |
c5aa993b JM |
1994 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
1995 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
1996 | &setlist); |
1997 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 1998 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
1999 | #endif |
2000 | } |