Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include <ctype.h> | |
23 | #include "defs.h" | |
24 | #include "gdb_string.h" | |
25 | #include "value.h" | |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "language.h" | |
30 | #include "frame.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "gdbcore.h" | |
33 | #include "target.h" | |
34 | #include "breakpoint.h" | |
35 | #include "demangle.h" | |
36 | #include "inferior.h" | |
37 | #include "annotate.h" | |
8b93c638 JM |
38 | #ifdef UI_OUT |
39 | #include "ui-out.h" | |
40 | #endif | |
c906108c SS |
41 | |
42 | /* Prototypes for exported functions. */ | |
43 | ||
a14ed312 | 44 | void args_info (char *, int); |
c906108c | 45 | |
a14ed312 | 46 | void locals_info (char *, int); |
c906108c | 47 | |
507f3c78 | 48 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 49 | |
a14ed312 | 50 | void _initialize_stack (void); |
c906108c SS |
51 | |
52 | /* Prototypes for local functions. */ | |
53 | ||
a14ed312 | 54 | static void return_command (char *, int); |
c906108c | 55 | |
a14ed312 | 56 | static void down_command (char *, int); |
c906108c | 57 | |
a14ed312 | 58 | static void down_silently_base (char *); |
c906108c | 59 | |
a14ed312 | 60 | static void down_silently_command (char *, int); |
c906108c | 61 | |
a14ed312 | 62 | static void up_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void up_silently_base (char *); |
c906108c | 65 | |
a14ed312 | 66 | static void up_silently_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | void frame_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void current_frame_command (char *, int); |
7a292a7a | 71 | |
a14ed312 | 72 | static void select_frame_command (char *, int); |
c906108c | 73 | |
d9fcf2fb | 74 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 75 | |
a14ed312 | 76 | static void catch_info (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void args_plus_locals_info (char *, int); |
c906108c | 79 | |
d9fcf2fb JM |
80 | static void print_frame_label_vars (struct frame_info *, int, |
81 | struct ui_file *); | |
c906108c | 82 | |
d9fcf2fb JM |
83 | static void print_frame_local_vars (struct frame_info *, int, |
84 | struct ui_file *); | |
c906108c | 85 | |
d9fcf2fb JM |
86 | static int print_block_frame_labels (struct block *, int *, |
87 | struct ui_file *); | |
c906108c | 88 | |
d9fcf2fb JM |
89 | static int print_block_frame_locals (struct block *, |
90 | struct frame_info *, | |
91 | int, | |
92 | struct ui_file *); | |
c906108c | 93 | |
c5394b80 JM |
94 | static void print_frame (struct frame_info *fi, |
95 | int level, | |
96 | int source, | |
97 | int args, | |
98 | struct symtab_and_line sal); | |
99 | ||
a14ed312 | 100 | static void print_frame_info_base (struct frame_info *, int, int, int); |
c5aa993b | 101 | |
a14ed312 | 102 | static void print_stack_frame_base (struct frame_info *, int, int); |
c906108c | 103 | |
a14ed312 | 104 | static void backtrace_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | struct frame_info *parse_frame_specification (char *); |
c906108c | 107 | |
a14ed312 | 108 | static void frame_info (char *, int); |
c906108c SS |
109 | |
110 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
111 | extern int info_verbose; /* Verbosity of symbol reading msgs */ | |
112 | extern int lines_to_list; /* # of lines "list" command shows by default */ | |
113 | ||
114 | /* The "selected" stack frame is used by default for local and arg access. | |
115 | May be zero, for no selected frame. */ | |
116 | ||
117 | struct frame_info *selected_frame; | |
118 | ||
119 | /* Level of the selected frame: | |
120 | 0 for innermost, 1 for its caller, ... | |
121 | or -1 for frame specified by address with no defined level. */ | |
122 | ||
123 | int selected_frame_level; | |
124 | ||
125 | /* Zero means do things normally; we are interacting directly with the | |
126 | user. One means print the full filename and linenumber when a | |
127 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
128 | parse. Two means print similar annotations, but in many more | |
129 | cases and in a slightly different syntax. */ | |
130 | ||
131 | int annotation_level = 0; | |
c906108c | 132 | \f |
c5aa993b JM |
133 | |
134 | struct print_stack_frame_args | |
135 | { | |
136 | struct frame_info *fi; | |
137 | int level; | |
138 | int source; | |
139 | int args; | |
140 | }; | |
c906108c | 141 | |
a14ed312 | 142 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
143 | |
144 | /* Show and print the frame arguments. | |
145 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 146 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 147 | static int |
fba45db2 | 148 | show_and_print_stack_frame_stub (void *args) |
c906108c | 149 | { |
c5aa993b | 150 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
151 | |
152 | /* Reversed order of these so tuiDo() doesn't occur | |
153 | * in the middle of "Breakpoint 1 ... [location]" printing = RT | |
154 | */ | |
155 | if (tui_version) | |
156 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
157 | print_frame_info (p->fi, p->level, p->source, p->args); | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
162 | /* Show or print the frame arguments. | |
163 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 164 | static int print_stack_frame_stub (void *args); |
c906108c | 165 | static int |
fba45db2 | 166 | print_stack_frame_stub (void *args) |
c906108c | 167 | { |
c5aa993b | 168 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
169 | |
170 | if (tui_version) | |
171 | print_frame_info (p->fi, p->level, p->source, p->args); | |
172 | else | |
173 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
174 | return 0; | |
175 | } | |
176 | ||
177 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
178 | and LEVEL should be its level in the stack (or -1 for level not | |
179 | defined). */ | |
180 | ||
181 | /* Pass the args the way catch_errors wants them. */ | |
182 | static int | |
fba45db2 | 183 | print_stack_frame_base_stub (char *args) |
c906108c | 184 | { |
c5aa993b | 185 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
186 | |
187 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
188 | return 0; | |
189 | } | |
190 | ||
191 | /* print the frame arguments to the terminal. | |
192 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 193 | static int print_only_stack_frame_stub (void *); |
c906108c | 194 | static int |
fba45db2 | 195 | print_only_stack_frame_stub (void *args) |
c906108c | 196 | { |
c5aa993b | 197 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
198 | |
199 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
204 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
205 | This prints the level, the function executing, the arguments, | |
206 | and the file name and line number. | |
207 | If the pc is not at the beginning of the source line, | |
208 | the actual pc is printed at the beginning. | |
209 | ||
210 | If SOURCE is 1, print the source line as well. | |
211 | If SOURCE is -1, print ONLY the source line. */ | |
212 | ||
213 | static void | |
fba45db2 | 214 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
215 | { |
216 | struct print_stack_frame_args args; | |
217 | ||
218 | args.fi = fi; | |
219 | args.level = level; | |
220 | args.source = source; | |
221 | args.args = 1; | |
222 | ||
7a292a7a | 223 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
224 | } |
225 | ||
226 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
227 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
228 | This prints the level, the function executing, the arguments, | |
229 | and the file name and line number. | |
230 | If the pc is not at the beginning of the source line, | |
231 | the actual pc is printed at the beginning. | |
232 | ||
233 | If SOURCE is 1, print the source line as well. | |
234 | If SOURCE is -1, print ONLY the source line. */ | |
235 | ||
236 | void | |
fba45db2 | 237 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
238 | { |
239 | struct print_stack_frame_args args; | |
240 | ||
241 | args.fi = fi; | |
242 | args.level = level; | |
243 | args.source = source; | |
244 | args.args = 1; | |
245 | ||
7a292a7a | 246 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
247 | } |
248 | ||
249 | ||
250 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
251 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
252 | This prints the level, the function executing, the arguments, | |
253 | and the file name and line number. | |
254 | If the pc is not at the beginning of the source line, | |
255 | the actual pc is printed at the beginning. | |
256 | ||
257 | If SOURCE is 1, print the source line as well. | |
258 | If SOURCE is -1, print ONLY the source line. */ | |
259 | ||
260 | void | |
fba45db2 | 261 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
262 | { |
263 | struct print_stack_frame_args args; | |
264 | ||
265 | args.fi = fi; | |
266 | args.level = level; | |
267 | args.source = source; | |
268 | args.args = 1; | |
269 | ||
c5aa993b | 270 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
271 | } |
272 | ||
273 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
274 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
275 | This prints the level, the function executing, the arguments, | |
276 | and the file name and line number. | |
277 | If the pc is not at the beginning of the source line, | |
278 | the actual pc is printed at the beginning. | |
279 | ||
280 | If SOURCE is 1, print the source line as well. | |
281 | If SOURCE is -1, print ONLY the source line. */ | |
282 | ||
283 | void | |
fba45db2 | 284 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
285 | { |
286 | struct print_stack_frame_args args; | |
287 | ||
288 | args.fi = fi; | |
289 | args.level = level; | |
290 | args.source = source; | |
291 | args.args = 1; | |
292 | ||
7a292a7a | 293 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
294 | } |
295 | ||
c5aa993b JM |
296 | struct print_args_args |
297 | { | |
c906108c SS |
298 | struct symbol *func; |
299 | struct frame_info *fi; | |
d9fcf2fb | 300 | struct ui_file *stream; |
c906108c SS |
301 | }; |
302 | ||
a14ed312 | 303 | static int print_args_stub (PTR); |
c906108c SS |
304 | |
305 | /* Pass the args the way catch_errors wants them. */ | |
306 | ||
307 | static int | |
fba45db2 | 308 | print_args_stub (PTR args) |
c906108c SS |
309 | { |
310 | int numargs; | |
c5aa993b | 311 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 312 | |
392a587b | 313 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 314 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
315 | return 0; |
316 | } | |
317 | ||
318 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
319 | Used in "where" output, also used to emit breakpoint or step |
320 | messages. | |
321 | LEVEL is the level of the frame, or -1 if it is the | |
322 | innermost frame but we don't want to print the level. | |
323 | The meaning of the SOURCE argument is: | |
324 | SRC_LINE: Print only source line | |
325 | LOCATION: Print only location | |
326 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
327 | |
328 | static void | |
fba45db2 | 329 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
330 | { |
331 | struct symtab_and_line sal; | |
c5394b80 JM |
332 | int source_print; |
333 | int location_print; | |
c906108c SS |
334 | |
335 | #if 0 | |
336 | char buf[MAX_REGISTER_RAW_SIZE]; | |
337 | CORE_ADDR sp; | |
338 | ||
339 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
340 | ||
341 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
342 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
343 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
344 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
345 | ||
346 | /* This is not a perfect test, because if a function alloca's some | |
347 | memory, puts some code there, and then jumps into it, then the test | |
348 | will succeed even though there is no call dummy. Probably best is | |
349 | to check for a bp_call_dummy breakpoint. */ | |
350 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
351 | #else | |
352 | if (frame_in_dummy (fi)) | |
353 | #endif | |
354 | { | |
355 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
356 | ||
357 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 358 | to list for this frame. */ |
c906108c SS |
359 | if (level >= 0) |
360 | printf_filtered ("#%-2d ", level); | |
361 | annotate_function_call (); | |
362 | printf_filtered ("<function called from gdb>\n"); | |
363 | annotate_frame_end (); | |
364 | return; | |
365 | } | |
366 | if (fi->signal_handler_caller) | |
367 | { | |
368 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
369 | ||
370 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 371 | to list for this frame. */ |
c906108c SS |
372 | if (level >= 0) |
373 | printf_filtered ("#%-2d ", level); | |
374 | annotate_signal_handler_caller (); | |
375 | printf_filtered ("<signal handler called>\n"); | |
376 | annotate_frame_end (); | |
377 | return; | |
378 | } | |
379 | ||
380 | /* If fi is not the innermost frame, that normally means that fi->pc | |
381 | points to *after* the call instruction, and we want to get the line | |
382 | containing the call, never the next line. But if the next frame is | |
383 | a signal_handler_caller or a dummy frame, then the next frame was | |
384 | not entered as the result of a call, and we want to get the line | |
385 | containing fi->pc. */ | |
386 | sal = | |
387 | find_pc_line (fi->pc, | |
388 | fi->next != NULL | |
389 | && !fi->next->signal_handler_caller | |
390 | && !frame_in_dummy (fi->next)); | |
391 | ||
c5394b80 JM |
392 | location_print = (source == LOCATION |
393 | || source == LOC_AND_ADDRESS | |
394 | || source == SRC_AND_LOC); | |
395 | ||
396 | if (location_print || !sal.symtab) | |
397 | print_frame (fi, level, source, args, sal); | |
398 | ||
399 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
400 | ||
401 | if (source_print && sal.symtab) | |
402 | { | |
403 | int done = 0; | |
404 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
405 | ||
406 | if (annotation_level) | |
407 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
408 | fi->pc); | |
409 | if (!done) | |
410 | { | |
411 | if (addressprint && mid_statement && !tui_version) | |
412 | { | |
8b93c638 JM |
413 | #ifdef UI_OUT |
414 | ui_out_field_core_addr (uiout, "addr", fi->pc); | |
415 | ui_out_text (uiout, "\t"); | |
416 | #else | |
c5394b80 JM |
417 | print_address_numeric (fi->pc, 1, gdb_stdout); |
418 | printf_filtered ("\t"); | |
8b93c638 | 419 | #endif |
c5394b80 JM |
420 | } |
421 | if (print_frame_info_listing_hook) | |
422 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
423 | else if (!tui_version) | |
424 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
425 | } | |
426 | current_source_line = max (sal.line - lines_to_list / 2, 1); | |
427 | } | |
428 | ||
429 | if (source != 0) | |
430 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
431 | ||
432 | annotate_frame_end (); | |
433 | ||
434 | gdb_flush (gdb_stdout); | |
435 | } | |
436 | ||
437 | static void | |
438 | print_frame (struct frame_info *fi, | |
439 | int level, | |
440 | int source, | |
441 | int args, | |
442 | struct symtab_and_line sal) | |
443 | { | |
444 | struct symbol *func; | |
445 | register char *funname = 0; | |
446 | enum language funlang = language_unknown; | |
8b93c638 JM |
447 | #ifdef UI_OUT |
448 | struct ui_stream *stb; | |
449 | struct cleanup *old_chain; | |
e6e0bfab | 450 | struct cleanup *list_chain; |
8b93c638 JM |
451 | |
452 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 453 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 454 | #endif /* UI_OUT */ |
c5394b80 | 455 | |
c906108c SS |
456 | func = find_pc_function (fi->pc); |
457 | if (func) | |
458 | { | |
459 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
460 | function (when we are in the first function in a file which |
461 | is compiled without debugging symbols, the previous function | |
462 | is compiled with debugging symbols, and the "foo.o" symbol | |
463 | that is supposed to tell us where the file with debugging symbols | |
464 | ends has been truncated by ar because it is longer than 15 | |
465 | characters). This also occurs if the user uses asm() to create | |
466 | a function but not stabs for it (in a file compiled -g). | |
467 | ||
468 | So look in the minimal symbol tables as well, and if it comes | |
469 | up with a larger address for the function use that instead. | |
470 | I don't think this can ever cause any problems; there shouldn't | |
471 | be any minimal symbols in the middle of a function; if this is | |
472 | ever changed many parts of GDB will need to be changed (and we'll | |
473 | create a find_pc_minimal_function or some such). */ | |
c906108c SS |
474 | |
475 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
476 | if (msymbol != NULL | |
c5aa993b | 477 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
478 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
479 | { | |
480 | #if 0 | |
481 | /* There is no particular reason to think the line number | |
482 | information is wrong. Someone might have just put in | |
483 | a label with asm() but left the line numbers alone. */ | |
484 | /* In this case we have no way of knowing the source file | |
485 | and line number, so don't print them. */ | |
486 | sal.symtab = 0; | |
487 | #endif | |
488 | /* We also don't know anything about the function besides | |
489 | its address and name. */ | |
490 | func = 0; | |
491 | funname = SYMBOL_NAME (msymbol); | |
492 | funlang = SYMBOL_LANGUAGE (msymbol); | |
493 | } | |
494 | else | |
495 | { | |
c5394b80 JM |
496 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
497 | demangled name that we already have stored in the symbol | |
498 | table, but we stored a version with DMGL_PARAMS turned | |
499 | on, and here we don't want to display parameters. So call | |
500 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
501 | that printf_symbol_filtered() will again try to demangle | |
502 | the name on the fly, but the issue is that if | |
503 | cplus_demangle() fails here, it'll fail there too. So we | |
504 | want to catch the failure ("demangled==NULL" case below) | |
505 | here, while we still have our hands on the function | |
506 | symbol.) */ | |
c5aa993b | 507 | char *demangled; |
c906108c SS |
508 | funname = SYMBOL_NAME (func); |
509 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
510 | if (funlang == language_cplus) |
511 | { | |
512 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
513 | if (demangled == NULL) | |
c5394b80 JM |
514 | /* If the demangler fails, try the demangled name from |
515 | the symbol table. This'll have parameters, but | |
516 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
517 | funname = SYMBOL_SOURCE_NAME (func); |
518 | } | |
c906108c SS |
519 | } |
520 | } | |
521 | else | |
522 | { | |
523 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
524 | if (msymbol != NULL) | |
525 | { | |
526 | funname = SYMBOL_NAME (msymbol); | |
527 | funlang = SYMBOL_LANGUAGE (msymbol); | |
528 | } | |
529 | } | |
530 | ||
c5394b80 JM |
531 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
532 | ||
8b93c638 JM |
533 | #ifdef UI_OUT |
534 | ui_out_list_begin (uiout, "frame"); | |
e6e0bfab | 535 | list_chain = make_cleanup_ui_out_list_end (uiout); |
8b93c638 | 536 | #endif |
c5394b80 JM |
537 | |
538 | if (level >= 0) | |
8b93c638 JM |
539 | { |
540 | #ifdef UI_OUT | |
541 | ui_out_text (uiout, "#"); | |
542 | ui_out_field_fmt (uiout, "level", "%-2d", level); | |
543 | ui_out_spaces (uiout, 1); | |
544 | #else | |
545 | printf_filtered ("#%-2d ", level); | |
546 | #endif | |
547 | } | |
c5394b80 JM |
548 | if (addressprint) |
549 | if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS) | |
550 | { | |
551 | annotate_frame_address (); | |
8b93c638 JM |
552 | #ifdef UI_OUT |
553 | ui_out_field_core_addr (uiout, "addr", fi->pc); | |
554 | annotate_frame_address_end (); | |
555 | ui_out_text (uiout, " in "); | |
556 | #else | |
c5394b80 JM |
557 | print_address_numeric (fi->pc, 1, gdb_stdout); |
558 | annotate_frame_address_end (); | |
559 | printf_filtered (" in "); | |
8b93c638 | 560 | #endif |
c5394b80 JM |
561 | } |
562 | annotate_frame_function_name (); | |
8b93c638 JM |
563 | #ifdef UI_OUT |
564 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, | |
565 | DMGL_ANSI); | |
566 | ui_out_field_stream (uiout, "func", stb); | |
567 | ui_out_wrap_hint (uiout, " "); | |
568 | #else | |
c5394b80 JM |
569 | fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang, |
570 | DMGL_ANSI); | |
571 | wrap_here (" "); | |
8b93c638 | 572 | #endif |
c5394b80 JM |
573 | annotate_frame_args (); |
574 | ||
8b93c638 JM |
575 | #ifdef UI_OUT |
576 | ui_out_text (uiout, " ("); | |
577 | #else | |
c5394b80 | 578 | fputs_filtered (" (", gdb_stdout); |
8b93c638 | 579 | #endif |
c5394b80 | 580 | if (args) |
c906108c | 581 | { |
c5394b80 | 582 | struct print_args_args args; |
d493eb33 KB |
583 | #ifdef UI_OUT |
584 | struct cleanup *args_list_chain; | |
585 | #endif | |
c5394b80 JM |
586 | args.fi = fi; |
587 | args.func = func; | |
588 | args.stream = gdb_stdout; | |
8b93c638 JM |
589 | #ifdef UI_OUT |
590 | ui_out_list_begin (uiout, "args"); | |
d493eb33 | 591 | args_list_chain = make_cleanup_ui_out_list_end (uiout); |
c5394b80 | 592 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
593 | /* FIXME: args must be a list. If one argument is a string it will |
594 | have " that will not be properly escaped. */ | |
d493eb33 KB |
595 | /* Invoke ui_out_list_end. */ |
596 | do_cleanups (args_list_chain); | |
8b93c638 JM |
597 | #else |
598 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); | |
599 | #endif | |
c5394b80 JM |
600 | QUIT; |
601 | } | |
8b93c638 JM |
602 | #ifdef UI_OUT |
603 | ui_out_text (uiout, ")"); | |
604 | #else | |
c5394b80 | 605 | printf_filtered (")"); |
8b93c638 | 606 | #endif |
c5394b80 JM |
607 | if (sal.symtab && sal.symtab->filename) |
608 | { | |
609 | annotate_frame_source_begin (); | |
8b93c638 JM |
610 | #ifdef UI_OUT |
611 | ui_out_wrap_hint (uiout, " "); | |
612 | ui_out_text (uiout, " at "); | |
613 | annotate_frame_source_file (); | |
614 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
615 | annotate_frame_source_file_end (); | |
616 | ui_out_text (uiout, ":"); | |
617 | annotate_frame_source_line (); | |
618 | ui_out_field_int (uiout, "line", sal.line); | |
619 | #else | |
c906108c | 620 | wrap_here (" "); |
c5394b80 JM |
621 | printf_filtered (" at "); |
622 | annotate_frame_source_file (); | |
623 | printf_filtered ("%s", sal.symtab->filename); | |
624 | annotate_frame_source_file_end (); | |
625 | printf_filtered (":"); | |
626 | annotate_frame_source_line (); | |
627 | printf_filtered ("%d", sal.line); | |
8b93c638 | 628 | #endif |
c5394b80 JM |
629 | annotate_frame_source_end (); |
630 | } | |
c906108c | 631 | |
c5394b80 JM |
632 | #ifdef PC_SOLIB |
633 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 634 | { |
c5394b80 JM |
635 | char *lib = PC_SOLIB (fi->pc); |
636 | if (lib) | |
c906108c | 637 | { |
c5394b80 | 638 | annotate_frame_where (); |
8b93c638 JM |
639 | #ifdef UI_OUT |
640 | ui_out_wrap_hint (uiout, " "); | |
641 | ui_out_text (uiout, " from "); | |
642 | ui_out_field_string (uiout, "from", lib); | |
643 | #else | |
c5394b80 JM |
644 | wrap_here (" "); |
645 | printf_filtered (" from %s", lib); | |
8b93c638 | 646 | #endif |
c906108c | 647 | } |
c906108c | 648 | } |
c5394b80 | 649 | #endif /* PC_SOLIB */ |
e514a9d6 | 650 | |
8b93c638 | 651 | #ifdef UI_OUT |
e6e0bfab MK |
652 | /* do_cleanups will call ui_out_list_end() for us. */ |
653 | do_cleanups (list_chain); | |
8b93c638 JM |
654 | ui_out_text (uiout, "\n"); |
655 | do_cleanups (old_chain); | |
656 | #else | |
c5394b80 | 657 | printf_filtered ("\n"); |
8b93c638 | 658 | #endif |
c906108c SS |
659 | } |
660 | \f | |
661 | ||
7a292a7a | 662 | #if 0 |
c906108c | 663 | void |
fba45db2 | 664 | stack_publish_stopped_with_no_frame (void) |
c906108c | 665 | { |
c5aa993b | 666 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateOnEnd)); |
c906108c SS |
667 | |
668 | return; | |
669 | } | |
7a292a7a | 670 | #endif |
c906108c SS |
671 | |
672 | /* Show or print the frame info. If this is the tui, it will be shown in | |
673 | the source display */ | |
674 | void | |
fba45db2 KB |
675 | print_frame_info (struct frame_info *fi, register int level, int source, |
676 | int args) | |
c906108c SS |
677 | { |
678 | if (!tui_version) | |
c5aa993b | 679 | print_frame_info_base (fi, level, source, args); |
c906108c | 680 | else |
c5aa993b JM |
681 | { |
682 | if (fi && (frame_in_dummy (fi) || fi->signal_handler_caller)) | |
683 | print_frame_info_base (fi, level, source, args); | |
684 | else | |
685 | { | |
686 | TUIDO (((TuiOpaqueFuncPtr) tui_vShowFrameInfo, fi)); | |
687 | } | |
688 | } | |
c906108c SS |
689 | } |
690 | ||
691 | /* Show the frame info. If this is the tui, it will be shown in | |
692 | the source display otherwise, nothing is done */ | |
693 | void | |
fba45db2 | 694 | show_stack_frame (struct frame_info *fi) |
c906108c | 695 | { |
c5aa993b | 696 | TUIDO (((TuiOpaqueFuncPtr) tui_vShowFrameInfo, fi)); |
c906108c | 697 | } |
c906108c | 698 | \f |
c5aa993b | 699 | |
c906108c SS |
700 | /* Read a frame specification in whatever the appropriate format is. |
701 | Call error() if the specification is in any way invalid (i.e. | |
702 | this function never returns NULL). */ | |
703 | ||
704 | struct frame_info * | |
fba45db2 | 705 | parse_frame_specification (char *frame_exp) |
c906108c SS |
706 | { |
707 | int numargs = 0; | |
708 | #define MAXARGS 4 | |
709 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 710 | int level; |
c5aa993b | 711 | |
c906108c SS |
712 | if (frame_exp) |
713 | { | |
714 | char *addr_string, *p; | |
715 | struct cleanup *tmp_cleanup; | |
716 | ||
c5aa993b JM |
717 | while (*frame_exp == ' ') |
718 | frame_exp++; | |
c906108c SS |
719 | |
720 | while (*frame_exp) | |
721 | { | |
722 | if (numargs > MAXARGS) | |
723 | error ("Too many args in frame specification"); | |
724 | /* Parse an argument. */ | |
c5aa993b | 725 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 726 | ; |
c5aa993b | 727 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
728 | |
729 | { | |
ec9a3449 DT |
730 | value_ptr vp; |
731 | ||
b8c9b27d | 732 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 733 | |
24285e3a DT |
734 | /* NOTE: we call parse_and_eval and then both |
735 | value_as_long and value_as_pointer rather than calling | |
736 | parse_and_eval_long and parse_and_eval_address because | |
737 | of the issue of potential side effects from evaluating | |
738 | the expression. */ | |
ec9a3449 DT |
739 | vp = parse_and_eval (addr_string); |
740 | if (numargs == 0) | |
741 | level = value_as_long (vp); | |
742 | ||
743 | args[numargs++] = value_as_pointer (vp); | |
c906108c SS |
744 | do_cleanups (tmp_cleanup); |
745 | } | |
746 | ||
747 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
748 | while (*p == ' ') |
749 | p++; | |
c906108c SS |
750 | frame_exp = p; |
751 | } | |
752 | } | |
753 | ||
754 | switch (numargs) | |
755 | { | |
756 | case 0: | |
757 | if (selected_frame == NULL) | |
758 | error ("No selected frame."); | |
759 | return selected_frame; | |
760 | /* NOTREACHED */ | |
761 | case 1: | |
762 | { | |
c906108c | 763 | struct frame_info *fid = |
c5aa993b | 764 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
765 | struct frame_info *tfid; |
766 | ||
767 | if (level == 0) | |
768 | /* find_relative_frame was successful */ | |
769 | return fid; | |
770 | ||
771 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
772 | take at least 2 addresses. It is important to detect this case | |
773 | here so that "frame 100" does not give a confusing error message | |
774 | like "frame specification requires two addresses". This of course | |
775 | does not solve the "frame 100" problem for machines on which | |
776 | a frame specification can be made with one address. To solve | |
777 | that, we need a new syntax for a specifying a frame by address. | |
778 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
779 | two args, etc.), but people might think that is too much typing, | |
780 | so I guess *0x23,0x45 would be a possible alternative (commas | |
781 | really should be used instead of spaces to delimit; using spaces | |
782 | normally works in an expression). */ | |
783 | #ifdef SETUP_ARBITRARY_FRAME | |
784 | error ("No frame %d", args[0]); | |
785 | #endif | |
786 | ||
787 | /* If (s)he specifies the frame with an address, he deserves what | |
788 | (s)he gets. Still, give the highest one that matches. */ | |
789 | ||
790 | for (fid = get_current_frame (); | |
791 | fid && fid->frame != args[0]; | |
792 | fid = get_prev_frame (fid)) | |
793 | ; | |
794 | ||
795 | if (fid) | |
796 | while ((tfid = get_prev_frame (fid)) && | |
797 | (tfid->frame == args[0])) | |
798 | fid = tfid; | |
c5aa993b | 799 | |
c906108c SS |
800 | /* We couldn't identify the frame as an existing frame, but |
801 | perhaps we can create one with a single argument. */ | |
802 | } | |
803 | ||
c5aa993b | 804 | default: |
c906108c SS |
805 | #ifdef SETUP_ARBITRARY_FRAME |
806 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
807 | #else | |
808 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 809 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
810 | if (numargs == 1) |
811 | return create_new_frame (args[0], 0); | |
812 | error ("Too many args in frame specification"); | |
813 | #endif | |
814 | /* NOTREACHED */ | |
815 | } | |
816 | /* NOTREACHED */ | |
817 | } | |
818 | ||
819 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
820 | that if it is unsure about the answer, it returns 0 | |
821 | instead of guessing (this happens on the VAX and i960, for example). | |
822 | ||
823 | On most machines, we never have to guess about the args address, | |
824 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
825 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
826 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
827 | #endif | |
828 | ||
829 | /* Print verbosely the selected frame or the frame at address ADDR. | |
830 | This means absolutely all information in the frame is printed. */ | |
831 | ||
832 | static void | |
fba45db2 | 833 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
834 | { |
835 | struct frame_info *fi; | |
836 | struct symtab_and_line sal; | |
837 | struct symbol *func; | |
838 | struct symtab *s; | |
839 | struct frame_info *calling_frame_info; | |
840 | int i, count, numregs; | |
841 | char *funname = 0; | |
842 | enum language funlang = language_unknown; | |
843 | ||
844 | if (!target_has_stack) | |
845 | error ("No stack."); | |
846 | ||
847 | fi = parse_frame_specification (addr_exp); | |
848 | if (fi == NULL) | |
849 | error ("Invalid frame specified."); | |
850 | ||
851 | sal = find_pc_line (fi->pc, | |
852 | fi->next != NULL | |
853 | && !fi->next->signal_handler_caller | |
854 | && !frame_in_dummy (fi->next)); | |
855 | func = get_frame_function (fi); | |
c5aa993b | 856 | s = find_pc_symtab (fi->pc); |
c906108c SS |
857 | if (func) |
858 | { | |
859 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
860 | * the demangled name that we already have stored in | |
861 | * the symbol table, but we stored a version with | |
862 | * DMGL_PARAMS turned on, and here we don't want | |
863 | * to display parameters. So call the demangler again, | |
864 | * with DMGL_ANSI only. RT | |
865 | * (Yes, I know that printf_symbol_filtered() will | |
866 | * again try to demangle the name on the fly, but | |
867 | * the issue is that if cplus_demangle() fails here, | |
868 | * it'll fail there too. So we want to catch the failure | |
869 | * ("demangled==NULL" case below) here, while we still | |
870 | * have our hands on the function symbol.) | |
871 | */ | |
c5aa993b JM |
872 | char *demangled; |
873 | funname = SYMBOL_NAME (func); | |
874 | funlang = SYMBOL_LANGUAGE (func); | |
875 | if (funlang == language_cplus) | |
876 | { | |
877 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
878 | /* If the demangler fails, try the demangled name | |
879 | * from the symbol table. This'll have parameters, | |
880 | * but that's preferable to diplaying a mangled name. | |
881 | */ | |
882 | if (demangled == NULL) | |
883 | funname = SYMBOL_SOURCE_NAME (func); | |
884 | } | |
c906108c SS |
885 | } |
886 | else | |
887 | { | |
888 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
889 | if (msymbol != NULL) | |
890 | { | |
891 | funname = SYMBOL_NAME (msymbol); | |
892 | funlang = SYMBOL_LANGUAGE (msymbol); | |
893 | } | |
894 | } | |
895 | calling_frame_info = get_prev_frame (fi); | |
896 | ||
897 | if (!addr_exp && selected_frame_level >= 0) | |
898 | { | |
899 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); | |
900 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
901 | printf_filtered (":\n"); | |
902 | } | |
903 | else | |
904 | { | |
905 | printf_filtered ("Stack frame at "); | |
906 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
907 | printf_filtered (":\n"); | |
908 | } | |
909 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
910 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
911 | ||
912 | wrap_here (" "); | |
913 | if (funname) | |
914 | { | |
915 | printf_filtered (" in "); | |
916 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
917 | DMGL_ANSI | DMGL_PARAMS); | |
918 | } | |
919 | wrap_here (" "); | |
920 | if (sal.symtab) | |
921 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
922 | puts_filtered ("; "); | |
923 | wrap_here (" "); | |
924 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
925 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
926 | printf_filtered ("\n"); | |
927 | ||
928 | { | |
392a587b JM |
929 | int frameless; |
930 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
931 | if (frameless) |
932 | printf_filtered (" (FRAMELESS),"); | |
933 | } | |
934 | ||
935 | if (calling_frame_info) | |
936 | { | |
937 | printf_filtered (" called by frame at "); | |
938 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
939 | } | |
940 | if (fi->next && calling_frame_info) | |
941 | puts_filtered (","); | |
942 | wrap_here (" "); | |
943 | if (fi->next) | |
944 | { | |
945 | printf_filtered (" caller of frame at "); | |
946 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
947 | } | |
948 | if (fi->next || calling_frame_info) | |
949 | puts_filtered ("\n"); | |
950 | if (s) | |
951 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
952 | ||
953 | #ifdef PRINT_EXTRA_FRAME_INFO | |
954 | PRINT_EXTRA_FRAME_INFO (fi); | |
955 | #endif | |
956 | ||
957 | { | |
958 | /* Address of the argument list for this frame, or 0. */ | |
959 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
960 | /* Number of args for this frame, or -1 if unknown. */ | |
961 | int numargs; | |
962 | ||
963 | if (arg_list == 0) | |
964 | printf_filtered (" Arglist at unknown address.\n"); | |
965 | else | |
966 | { | |
967 | printf_filtered (" Arglist at "); | |
968 | print_address_numeric (arg_list, 1, gdb_stdout); | |
969 | printf_filtered (","); | |
970 | ||
392a587b | 971 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
972 | if (numargs < 0) |
973 | puts_filtered (" args: "); | |
974 | else if (numargs == 0) | |
975 | puts_filtered (" no args."); | |
976 | else if (numargs == 1) | |
977 | puts_filtered (" 1 arg: "); | |
978 | else | |
979 | printf_filtered (" %d args: ", numargs); | |
980 | print_frame_args (func, fi, numargs, gdb_stdout); | |
981 | puts_filtered ("\n"); | |
982 | } | |
983 | } | |
984 | { | |
985 | /* Address of the local variables for this frame, or 0. */ | |
986 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
987 | ||
988 | if (arg_list == 0) | |
989 | printf_filtered (" Locals at unknown address,"); | |
990 | else | |
991 | { | |
992 | printf_filtered (" Locals at "); | |
993 | print_address_numeric (arg_list, 1, gdb_stdout); | |
994 | printf_filtered (","); | |
995 | } | |
996 | } | |
997 | ||
998 | FRAME_INIT_SAVED_REGS (fi); | |
999 | if (fi->saved_regs != NULL) | |
1000 | { | |
1001 | /* The sp is special; what's returned isn't the save address, but | |
c5aa993b | 1002 | actually the value of the previous frame's sp. */ |
c906108c SS |
1003 | printf_filtered (" Previous frame's sp is "); |
1004 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
1005 | printf_filtered ("\n"); | |
1006 | count = 0; | |
64485362 | 1007 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
1008 | for (i = 0; i < numregs; i++) |
1009 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
1010 | { | |
1011 | if (count == 0) | |
1012 | puts_filtered (" Saved registers:\n "); | |
1013 | else | |
1014 | puts_filtered (","); | |
1015 | wrap_here (" "); | |
1016 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
1017 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
1018 | count++; | |
1019 | } | |
1020 | if (count) | |
1021 | puts_filtered ("\n"); | |
1022 | } | |
1023 | else | |
1024 | { | |
1025 | /* We could get some information about saved registers by | |
c5aa993b JM |
1026 | calling get_saved_register on each register. Which info goes |
1027 | with which frame is necessarily lost, however, and I suspect | |
1028 | that the users don't care whether they get the info. */ | |
c906108c SS |
1029 | puts_filtered ("\n"); |
1030 | } | |
1031 | } | |
1032 | ||
1033 | #if 0 | |
1034 | /* Set a limit on the number of frames printed by default in a | |
1035 | backtrace. */ | |
1036 | ||
1037 | static int backtrace_limit; | |
1038 | ||
1039 | static void | |
fba45db2 | 1040 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 1041 | { |
bb518678 | 1042 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
1043 | |
1044 | if (count < 0) | |
1045 | error ("Negative argument not meaningful as backtrace limit."); | |
1046 | ||
1047 | backtrace_limit = count; | |
1048 | } | |
1049 | ||
1050 | static void | |
fba45db2 | 1051 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1052 | { |
1053 | if (arg) | |
1054 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1055 | ||
1056 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1057 | } | |
1058 | #endif | |
1059 | ||
1060 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1061 | ||
a14ed312 KB |
1062 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1063 | int from_tty); | |
c906108c | 1064 | static void |
fba45db2 | 1065 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1066 | { |
1067 | struct frame_info *fi; | |
1068 | register int count; | |
1069 | register int i; | |
1070 | register struct frame_info *trailing; | |
1071 | register int trailing_level; | |
1072 | ||
1073 | if (!target_has_stack) | |
1074 | error ("No stack."); | |
1075 | ||
1076 | /* The following code must do two things. First, it must | |
1077 | set the variable TRAILING to the frame from which we should start | |
1078 | printing. Second, it must set the variable count to the number | |
1079 | of frames which we should print, or -1 if all of them. */ | |
1080 | trailing = get_current_frame (); | |
d082b2bb AC |
1081 | |
1082 | /* The target can be in a state where there is no valid frames | |
1083 | (e.g., just connected). */ | |
1084 | if (trailing == NULL) | |
1085 | error ("No stack."); | |
1086 | ||
c906108c SS |
1087 | trailing_level = 0; |
1088 | if (count_exp) | |
1089 | { | |
bb518678 | 1090 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1091 | if (count < 0) |
1092 | { | |
1093 | struct frame_info *current; | |
1094 | ||
1095 | count = -count; | |
1096 | ||
1097 | current = trailing; | |
1098 | while (current && count--) | |
1099 | { | |
1100 | QUIT; | |
1101 | current = get_prev_frame (current); | |
1102 | } | |
c5aa993b | 1103 | |
c906108c SS |
1104 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1105 | will be COUNT below it. */ | |
1106 | while (current) | |
1107 | { | |
1108 | QUIT; | |
1109 | trailing = get_prev_frame (trailing); | |
1110 | current = get_prev_frame (current); | |
1111 | trailing_level++; | |
1112 | } | |
c5aa993b | 1113 | |
c906108c SS |
1114 | count = -1; |
1115 | } | |
1116 | } | |
1117 | else | |
1118 | count = -1; | |
1119 | ||
1120 | if (info_verbose) | |
1121 | { | |
1122 | struct partial_symtab *ps; | |
c5aa993b | 1123 | |
c906108c | 1124 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1125 | a separate pass so that "Reading in symbols for xxx" messages |
1126 | don't screw up the appearance of the backtrace. Also | |
1127 | if people have strong opinions against reading symbols for | |
1128 | backtrace this may have to be an option. */ | |
c906108c SS |
1129 | i = count; |
1130 | for (fi = trailing; | |
1131 | fi != NULL && i--; | |
1132 | fi = get_prev_frame (fi)) | |
1133 | { | |
1134 | QUIT; | |
1135 | ps = find_pc_psymtab (fi->pc); | |
1136 | if (ps) | |
1137 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | for (i = 0, fi = trailing; | |
1142 | fi && count--; | |
1143 | i++, fi = get_prev_frame (fi)) | |
1144 | { | |
1145 | QUIT; | |
1146 | ||
1147 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1148 | means further attempts to backtrace would fail (on the other |
1149 | hand, perhaps the code does or could be fixed to make sure | |
1150 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1151 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1152 | if (show_locals) | |
c5aa993b | 1153 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1154 | } |
1155 | ||
1156 | /* If we've stopped before the end, mention that. */ | |
1157 | if (fi && from_tty) | |
1158 | printf_filtered ("(More stack frames follow...)\n"); | |
1159 | } | |
1160 | ||
1161 | static void | |
fba45db2 | 1162 | backtrace_command (char *arg, int from_tty) |
c906108c | 1163 | { |
c5aa993b JM |
1164 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1165 | char **argv = (char **) NULL; | |
1166 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1167 | char *argPtr = arg; | |
c906108c | 1168 | |
c5aa993b | 1169 | if (arg != (char *) NULL) |
c906108c SS |
1170 | { |
1171 | int i; | |
1172 | ||
c5aa993b | 1173 | argv = buildargv (arg); |
7a292a7a | 1174 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1175 | argc = 0; |
c5aa993b JM |
1176 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1177 | { | |
745b8ca0 | 1178 | unsigned int j; |
c5aa993b JM |
1179 | |
1180 | for (j = 0; (j < strlen (argv[i])); j++) | |
1181 | argv[i][j] = tolower (argv[i][j]); | |
1182 | ||
1183 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1184 | argIndicatingFullTrace = argc; | |
1185 | else | |
1186 | { | |
1187 | argc++; | |
1188 | totArgLen += strlen (argv[i]); | |
1189 | } | |
1190 | } | |
c906108c SS |
1191 | totArgLen += argc; |
1192 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1193 | { |
1194 | if (totArgLen > 0) | |
1195 | { | |
1196 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1197 | if (!argPtr) | |
1198 | nomem (0); | |
1199 | else | |
1200 | { | |
1201 | memset (argPtr, 0, totArgLen + 1); | |
1202 | for (i = 0; (i < (argc + 1)); i++) | |
1203 | { | |
1204 | if (i != argIndicatingFullTrace) | |
1205 | { | |
1206 | strcat (argPtr, argv[i]); | |
1207 | strcat (argPtr, " "); | |
1208 | } | |
1209 | } | |
1210 | } | |
1211 | } | |
1212 | else | |
1213 | argPtr = (char *) NULL; | |
1214 | } | |
c906108c SS |
1215 | } |
1216 | ||
1217 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1218 | ||
1219 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1220 | xfree (argPtr); |
c906108c SS |
1221 | |
1222 | if (old_chain) | |
c5aa993b | 1223 | do_cleanups (old_chain); |
c906108c SS |
1224 | } |
1225 | ||
a14ed312 | 1226 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1227 | static void |
fba45db2 | 1228 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1229 | { |
1230 | backtrace_command_1 (arg, 1, from_tty); | |
1231 | } | |
c906108c | 1232 | \f |
c5aa993b | 1233 | |
c906108c SS |
1234 | /* Print the local variables of a block B active in FRAME. |
1235 | Return 1 if any variables were printed; 0 otherwise. */ | |
1236 | ||
1237 | static int | |
fba45db2 KB |
1238 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1239 | int num_tabs, register struct ui_file *stream) | |
c906108c SS |
1240 | { |
1241 | int nsyms; | |
1242 | register int i, j; | |
1243 | register struct symbol *sym; | |
1244 | register int values_printed = 0; | |
1245 | ||
1246 | nsyms = BLOCK_NSYMS (b); | |
1247 | ||
1248 | for (i = 0; i < nsyms; i++) | |
1249 | { | |
1250 | sym = BLOCK_SYM (b, i); | |
1251 | switch (SYMBOL_CLASS (sym)) | |
1252 | { | |
1253 | case LOC_LOCAL: | |
1254 | case LOC_REGISTER: | |
1255 | case LOC_STATIC: | |
1256 | case LOC_BASEREG: | |
1257 | values_printed = 1; | |
1258 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1259 | fputs_filtered ("\t", stream); |
c906108c SS |
1260 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1261 | fputs_filtered (" = ", stream); | |
1262 | print_variable_value (sym, fi, stream); | |
1263 | fprintf_filtered (stream, "\n"); | |
1264 | break; | |
1265 | ||
1266 | default: | |
1267 | /* Ignore symbols which are not locals. */ | |
1268 | break; | |
1269 | } | |
1270 | } | |
1271 | return values_printed; | |
1272 | } | |
1273 | ||
1274 | /* Same, but print labels. */ | |
1275 | ||
1276 | static int | |
fba45db2 KB |
1277 | print_block_frame_labels (struct block *b, int *have_default, |
1278 | register struct ui_file *stream) | |
c906108c SS |
1279 | { |
1280 | int nsyms; | |
1281 | register int i; | |
1282 | register struct symbol *sym; | |
1283 | register int values_printed = 0; | |
1284 | ||
1285 | nsyms = BLOCK_NSYMS (b); | |
1286 | ||
1287 | for (i = 0; i < nsyms; i++) | |
1288 | { | |
1289 | sym = BLOCK_SYM (b, i); | |
1290 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
1291 | { | |
1292 | if (*have_default) | |
1293 | continue; | |
1294 | *have_default = 1; | |
1295 | } | |
1296 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1297 | { | |
1298 | struct symtab_and_line sal; | |
1299 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1300 | values_printed = 1; | |
1301 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1302 | if (addressprint) | |
1303 | { | |
1304 | fprintf_filtered (stream, " "); | |
1305 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1306 | } | |
1307 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1308 | sal.symtab->filename, sal.line); | |
1309 | } | |
1310 | } | |
1311 | return values_printed; | |
1312 | } | |
1313 | ||
1314 | /* Print on STREAM all the local variables in frame FRAME, | |
1315 | including all the blocks active in that frame | |
1316 | at its current pc. | |
1317 | ||
1318 | Returns 1 if the job was done, | |
1319 | or 0 if nothing was printed because we have no info | |
1320 | on the function running in FRAME. */ | |
1321 | ||
1322 | static void | |
fba45db2 KB |
1323 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1324 | register struct ui_file *stream) | |
c906108c SS |
1325 | { |
1326 | register struct block *block = get_frame_block (fi); | |
1327 | register int values_printed = 0; | |
1328 | ||
1329 | if (block == 0) | |
1330 | { | |
1331 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1332 | return; | |
1333 | } | |
c5aa993b | 1334 | |
c906108c SS |
1335 | while (block != 0) |
1336 | { | |
1337 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1338 | values_printed = 1; | |
1339 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1340 | Don't continue to its superblock, the block of |
1341 | per-file symbols. */ | |
c906108c SS |
1342 | if (BLOCK_FUNCTION (block)) |
1343 | break; | |
1344 | block = BLOCK_SUPERBLOCK (block); | |
1345 | } | |
1346 | ||
1347 | if (!values_printed) | |
1348 | { | |
1349 | fprintf_filtered (stream, "No locals.\n"); | |
1350 | } | |
1351 | } | |
1352 | ||
1353 | /* Same, but print labels. */ | |
1354 | ||
1355 | static void | |
fba45db2 KB |
1356 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1357 | register struct ui_file *stream) | |
c906108c SS |
1358 | { |
1359 | register struct blockvector *bl; | |
1360 | register struct block *block = get_frame_block (fi); | |
1361 | register int values_printed = 0; | |
1362 | int index, have_default = 0; | |
1363 | char *blocks_printed; | |
1364 | CORE_ADDR pc = fi->pc; | |
1365 | ||
1366 | if (block == 0) | |
1367 | { | |
1368 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1369 | return; | |
1370 | } | |
1371 | ||
1372 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1373 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1374 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1375 | ||
1376 | while (block != 0) | |
1377 | { | |
1378 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1379 | int last_index; | |
1380 | ||
1381 | if (bl != blockvector_for_pc (end, &index)) | |
1382 | error ("blockvector blotch"); | |
1383 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1384 | error ("blockvector botch"); | |
1385 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1386 | index += 1; | |
1387 | ||
1388 | /* Don't print out blocks that have gone by. */ | |
1389 | while (index < last_index | |
1390 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1391 | index++; | |
1392 | ||
1393 | while (index < last_index | |
1394 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1395 | { | |
1396 | if (blocks_printed[index] == 0) | |
1397 | { | |
1398 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1399 | values_printed = 1; | |
1400 | blocks_printed[index] = 1; | |
1401 | } | |
1402 | index++; | |
1403 | } | |
1404 | if (have_default) | |
1405 | return; | |
1406 | if (values_printed && this_level_only) | |
1407 | return; | |
1408 | ||
1409 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1410 | Don't continue to its superblock, the block of |
1411 | per-file symbols. */ | |
c906108c SS |
1412 | if (BLOCK_FUNCTION (block)) |
1413 | break; | |
1414 | block = BLOCK_SUPERBLOCK (block); | |
1415 | } | |
1416 | ||
1417 | if (!values_printed && !this_level_only) | |
1418 | { | |
1419 | fprintf_filtered (stream, "No catches.\n"); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | /* ARGSUSED */ | |
1424 | void | |
fba45db2 | 1425 | locals_info (char *args, int from_tty) |
c906108c SS |
1426 | { |
1427 | if (!selected_frame) | |
1428 | error ("No frame selected."); | |
1429 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1430 | } | |
1431 | ||
1432 | static void | |
fba45db2 | 1433 | catch_info (char *ignore, int from_tty) |
c906108c | 1434 | { |
c5aa993b | 1435 | struct symtab_and_line *sal; |
c906108c | 1436 | |
c5aa993b | 1437 | /* Check for target support for exception handling */ |
c906108c SS |
1438 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1439 | if (sal) | |
1440 | { | |
1441 | /* Currently not handling this */ | |
1442 | /* Ideally, here we should interact with the C++ runtime | |
1443 | system to find the list of active handlers, etc. */ | |
1444 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1445 | #if 0 | |
c5aa993b JM |
1446 | if (!selected_frame) |
1447 | error ("No frame selected."); | |
c906108c SS |
1448 | #endif |
1449 | } | |
1450 | else | |
1451 | { | |
c5aa993b | 1452 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1453 | if (!selected_frame) |
c5aa993b JM |
1454 | error ("No frame selected."); |
1455 | ||
c906108c SS |
1456 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1457 | } | |
1458 | } | |
1459 | ||
1460 | static void | |
fba45db2 KB |
1461 | print_frame_arg_vars (register struct frame_info *fi, |
1462 | register struct ui_file *stream) | |
c906108c SS |
1463 | { |
1464 | struct symbol *func = get_frame_function (fi); | |
1465 | register struct block *b; | |
1466 | int nsyms; | |
1467 | register int i; | |
1468 | register struct symbol *sym, *sym2; | |
1469 | register int values_printed = 0; | |
1470 | ||
1471 | if (func == 0) | |
1472 | { | |
1473 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1474 | return; | |
1475 | } | |
1476 | ||
1477 | b = SYMBOL_BLOCK_VALUE (func); | |
1478 | nsyms = BLOCK_NSYMS (b); | |
1479 | ||
1480 | for (i = 0; i < nsyms; i++) | |
1481 | { | |
1482 | sym = BLOCK_SYM (b, i); | |
1483 | switch (SYMBOL_CLASS (sym)) | |
1484 | { | |
1485 | case LOC_ARG: | |
1486 | case LOC_LOCAL_ARG: | |
1487 | case LOC_REF_ARG: | |
1488 | case LOC_REGPARM: | |
1489 | case LOC_REGPARM_ADDR: | |
1490 | case LOC_BASEREG_ARG: | |
1491 | values_printed = 1; | |
1492 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1493 | fputs_filtered (" = ", stream); | |
1494 | ||
1495 | /* We have to look up the symbol because arguments can have | |
1496 | two entries (one a parameter, one a local) and the one we | |
1497 | want is the local, which lookup_symbol will find for us. | |
1498 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1499 | small structure and gcc2 when the argument type is float | |
1500 | and it is passed as a double and converted to float by | |
1501 | the prologue (in the latter case the type of the LOC_ARG | |
1502 | symbol is double and the type of the LOC_LOCAL symbol is | |
1503 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1504 | are not combined in symbol-reading. */ | |
1505 | ||
1506 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1507 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1508 | print_variable_value (sym2, fi, stream); |
1509 | fprintf_filtered (stream, "\n"); | |
1510 | break; | |
1511 | ||
1512 | default: | |
1513 | /* Don't worry about things which aren't arguments. */ | |
1514 | break; | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | if (!values_printed) | |
1519 | { | |
1520 | fprintf_filtered (stream, "No arguments.\n"); | |
1521 | } | |
1522 | } | |
1523 | ||
1524 | void | |
fba45db2 | 1525 | args_info (char *ignore, int from_tty) |
c906108c SS |
1526 | { |
1527 | if (!selected_frame) | |
1528 | error ("No frame selected."); | |
1529 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1530 | } | |
1531 | ||
1532 | ||
1533 | static void | |
fba45db2 | 1534 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1535 | { |
c5aa993b JM |
1536 | args_info (ignore, from_tty); |
1537 | locals_info (ignore, from_tty); | |
c906108c | 1538 | } |
c906108c | 1539 | \f |
c5aa993b | 1540 | |
c906108c SS |
1541 | /* Select frame FI, and note that its stack level is LEVEL. |
1542 | LEVEL may be -1 if an actual level number is not known. */ | |
1543 | ||
1544 | void | |
fba45db2 | 1545 | select_frame (struct frame_info *fi, int level) |
c906108c SS |
1546 | { |
1547 | register struct symtab *s; | |
1548 | ||
1549 | selected_frame = fi; | |
1550 | selected_frame_level = level; | |
1551 | if (selected_frame_level_changed_hook) | |
1552 | selected_frame_level_changed_hook (level); | |
1553 | ||
1554 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1555 | source language of this frame, and switch to it if desired. */ | |
1556 | if (fi) | |
c5aa993b JM |
1557 | { |
1558 | s = find_pc_symtab (fi->pc); | |
1559 | if (s | |
1560 | && s->language != current_language->la_language | |
1561 | && s->language != language_unknown | |
1562 | && language_mode == language_mode_auto) | |
1563 | { | |
1564 | set_language (s->language); | |
1565 | } | |
1566 | /* elz: this if here fixes the problem with the pc not being displayed | |
1567 | in the tui asm layout, with no debug symbols. The value of s | |
1568 | would be 0 here, and select_source_symtab would abort the | |
1569 | command by calling the 'error' function */ | |
1570 | if (s) | |
1571 | { | |
1572 | TUIDO (((TuiOpaqueFuncPtr) tui_vSelectSourceSymtab, s)); | |
1573 | } | |
c906108c | 1574 | } |
c906108c | 1575 | } |
c906108c | 1576 | \f |
c5aa993b | 1577 | |
c906108c SS |
1578 | /* Select frame FI, noting that its stack level is LEVEL. Also print |
1579 | the stack frame and show the source if this is the tui version. */ | |
1580 | void | |
fba45db2 | 1581 | select_and_print_frame (struct frame_info *fi, int level) |
c906108c | 1582 | { |
c5aa993b | 1583 | select_frame (fi, level); |
c906108c SS |
1584 | if (fi) |
1585 | { | |
c5aa993b JM |
1586 | print_stack_frame (fi, level, 1); |
1587 | TUIDO (((TuiOpaqueFuncPtr) tui_vCheckDataValues, fi)); | |
c906108c SS |
1588 | } |
1589 | } | |
c906108c | 1590 | \f |
c5aa993b | 1591 | |
c906108c SS |
1592 | /* Select frame FI, noting that its stack level is LEVEL. Be silent if |
1593 | not the TUI */ | |
7a292a7a | 1594 | #if 0 |
c906108c | 1595 | void |
fba45db2 | 1596 | select_and_maybe_print_frame (struct frame_info *fi, int level) |
c906108c SS |
1597 | { |
1598 | if (!tui_version) | |
c5aa993b | 1599 | select_frame (fi, level); |
c906108c | 1600 | else |
c5aa993b | 1601 | select_and_print_frame (fi, level); |
c906108c | 1602 | } |
7a292a7a | 1603 | #endif |
c906108c SS |
1604 | |
1605 | ||
1606 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. | |
1607 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1608 | ||
1609 | void | |
fba45db2 | 1610 | record_selected_frame (CORE_ADDR *frameaddrp, int *levelp) |
c906108c SS |
1611 | { |
1612 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
1613 | *levelp = selected_frame_level; | |
1614 | } | |
1615 | ||
1616 | /* Return the symbol-block in which the selected frame is executing. | |
1617 | Can return zero under various legitimate circumstances. */ | |
1618 | ||
1619 | struct block * | |
fba45db2 | 1620 | get_selected_block (void) |
c906108c SS |
1621 | { |
1622 | if (!target_has_stack) | |
1623 | return 0; | |
1624 | ||
1625 | if (!selected_frame) | |
1626 | return get_current_block (); | |
1627 | return get_frame_block (selected_frame); | |
1628 | } | |
1629 | ||
1630 | /* Find a frame a certain number of levels away from FRAME. | |
1631 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1632 | Positive means go to earlier frames (up); negative, the reverse. | |
1633 | The int that contains the number of levels is counted toward | |
1634 | zero as the frames for those levels are found. | |
1635 | If the top or bottom frame is reached, that frame is returned, | |
1636 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1637 | how much farther the original request asked to go. */ | |
1638 | ||
1639 | struct frame_info * | |
fba45db2 KB |
1640 | find_relative_frame (register struct frame_info *frame, |
1641 | register int *level_offset_ptr) | |
c906108c SS |
1642 | { |
1643 | register struct frame_info *prev; | |
1644 | register struct frame_info *frame1; | |
1645 | ||
1646 | /* Going up is simple: just do get_prev_frame enough times | |
1647 | or until initial frame is reached. */ | |
1648 | while (*level_offset_ptr > 0) | |
1649 | { | |
1650 | prev = get_prev_frame (frame); | |
1651 | if (prev == 0) | |
1652 | break; | |
1653 | (*level_offset_ptr)--; | |
1654 | frame = prev; | |
1655 | } | |
1656 | /* Going down is just as simple. */ | |
1657 | if (*level_offset_ptr < 0) | |
1658 | { | |
c5aa993b JM |
1659 | while (*level_offset_ptr < 0) |
1660 | { | |
1661 | frame1 = get_next_frame (frame); | |
1662 | if (!frame1) | |
1663 | break; | |
1664 | frame = frame1; | |
1665 | (*level_offset_ptr)++; | |
1666 | } | |
c906108c SS |
1667 | } |
1668 | return frame; | |
1669 | } | |
1670 | ||
1671 | /* The "select_frame" command. With no arg, NOP. | |
1672 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1673 | valid level. Otherwise, treat level_exp as an address expression | |
1674 | and select it. See parse_frame_specification for more info on proper | |
1675 | frame expressions. */ | |
1676 | ||
1677 | /* ARGSUSED */ | |
8b93c638 JM |
1678 | #ifdef UI_OUT |
1679 | void | |
fba45db2 | 1680 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1681 | { |
1682 | select_frame_command (level_exp, from_tty); | |
1683 | } | |
1684 | #endif | |
c906108c | 1685 | static void |
fba45db2 | 1686 | select_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1687 | { |
1688 | register struct frame_info *frame, *frame1; | |
1689 | unsigned int level = 0; | |
1690 | ||
1691 | if (!target_has_stack) | |
1692 | error ("No stack."); | |
1693 | ||
1694 | frame = parse_frame_specification (level_exp); | |
1695 | ||
1696 | /* Try to figure out what level this frame is. But if there is | |
1697 | no current stack, don't error out -- let the user set one. */ | |
1698 | frame1 = 0; | |
c5aa993b JM |
1699 | if (get_current_frame ()) |
1700 | { | |
1701 | for (frame1 = get_prev_frame (0); | |
1702 | frame1 && frame1 != frame; | |
1703 | frame1 = get_prev_frame (frame1)) | |
1704 | level++; | |
1705 | } | |
c906108c SS |
1706 | |
1707 | if (!frame1) | |
1708 | level = 0; | |
1709 | ||
1710 | select_frame (frame, level); | |
1711 | } | |
1712 | ||
1713 | /* The "frame" command. With no arg, print selected frame briefly. | |
1714 | With arg, behaves like select_frame and then prints the selected | |
1715 | frame. */ | |
1716 | ||
1717 | void | |
fba45db2 | 1718 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1719 | { |
1720 | select_frame_command (level_exp, from_tty); | |
1721 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1722 | } | |
1723 | ||
1724 | /* The XDB Compatibility command to print the current frame. */ | |
1725 | ||
7a292a7a | 1726 | static void |
fba45db2 | 1727 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1728 | { |
1729 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1730 | error ("No stack."); |
7a292a7a SS |
1731 | print_only_stack_frame (selected_frame, selected_frame_level, 1); |
1732 | } | |
c906108c SS |
1733 | |
1734 | /* Select the frame up one or COUNT stack levels | |
1735 | from the previously selected frame, and print it briefly. */ | |
1736 | ||
1737 | /* ARGSUSED */ | |
1738 | static void | |
fba45db2 | 1739 | up_silently_base (char *count_exp) |
c906108c SS |
1740 | { |
1741 | register struct frame_info *fi; | |
1742 | int count = 1, count1; | |
1743 | if (count_exp) | |
bb518678 | 1744 | count = parse_and_eval_long (count_exp); |
c906108c | 1745 | count1 = count; |
c5aa993b | 1746 | |
c906108c SS |
1747 | if (target_has_stack == 0 || selected_frame == 0) |
1748 | error ("No stack."); | |
1749 | ||
1750 | fi = find_relative_frame (selected_frame, &count1); | |
1751 | if (count1 != 0 && count_exp == 0) | |
1752 | error ("Initial frame selected; you cannot go up."); | |
1753 | select_frame (fi, selected_frame_level + count - count1); | |
1754 | } | |
1755 | ||
1756 | static void | |
fba45db2 | 1757 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1758 | { |
c5aa993b | 1759 | up_silently_base (count_exp); |
c906108c SS |
1760 | if (tui_version) |
1761 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1762 | } | |
1763 | ||
1764 | static void | |
fba45db2 | 1765 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1766 | { |
1767 | up_silently_base (count_exp); | |
1768 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1769 | } | |
1770 | ||
1771 | /* Select the frame down one or COUNT stack levels | |
1772 | from the previously selected frame, and print it briefly. */ | |
1773 | ||
1774 | /* ARGSUSED */ | |
1775 | static void | |
fba45db2 | 1776 | down_silently_base (char *count_exp) |
c906108c SS |
1777 | { |
1778 | register struct frame_info *frame; | |
1779 | int count = -1, count1; | |
1780 | if (count_exp) | |
bb518678 | 1781 | count = -parse_and_eval_long (count_exp); |
c906108c | 1782 | count1 = count; |
c5aa993b | 1783 | |
c906108c SS |
1784 | if (target_has_stack == 0 || selected_frame == 0) |
1785 | error ("No stack."); | |
1786 | ||
1787 | frame = find_relative_frame (selected_frame, &count1); | |
1788 | if (count1 != 0 && count_exp == 0) | |
1789 | { | |
1790 | ||
1791 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1792 | means to really go down (and let me know if that is |
1793 | impossible), but "down 9999" can be used to mean go all the way | |
1794 | down without getting an error. */ | |
c906108c SS |
1795 | |
1796 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1797 | } | |
1798 | ||
1799 | select_frame (frame, selected_frame_level + count - count1); | |
1800 | } | |
1801 | ||
1802 | /* ARGSUSED */ | |
1803 | static void | |
fba45db2 | 1804 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1805 | { |
1806 | down_silently_base (count_exp); | |
1807 | if (tui_version) | |
1808 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1809 | } | |
1810 | ||
1811 | static void | |
fba45db2 | 1812 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1813 | { |
1814 | down_silently_base (count_exp); | |
1815 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1816 | } | |
1817 | \f | |
8b93c638 JM |
1818 | #ifdef UI_OUT |
1819 | void | |
fba45db2 | 1820 | return_command_wrapper (char *retval_exp, int from_tty) |
8b93c638 JM |
1821 | { |
1822 | return_command (retval_exp, from_tty); | |
1823 | } | |
1824 | #endif | |
c906108c | 1825 | static void |
fba45db2 | 1826 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1827 | { |
1828 | struct symbol *thisfun; | |
1829 | CORE_ADDR selected_frame_addr; | |
1830 | CORE_ADDR selected_frame_pc; | |
1831 | struct frame_info *frame; | |
1832 | value_ptr return_value = NULL; | |
1833 | ||
1834 | if (selected_frame == NULL) | |
1835 | error ("No selected frame."); | |
1836 | thisfun = get_frame_function (selected_frame); | |
1837 | selected_frame_addr = FRAME_FP (selected_frame); | |
1838 | selected_frame_pc = selected_frame->pc; | |
1839 | ||
1840 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1841 | ||
1842 | if (retval_exp) | |
1843 | { | |
1844 | struct type *return_type = NULL; | |
1845 | ||
1846 | return_value = parse_and_eval (retval_exp); | |
1847 | ||
1848 | /* Cast return value to the return type of the function. */ | |
1849 | if (thisfun != NULL) | |
1850 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1851 | if (return_type == NULL) | |
1852 | return_type = builtin_type_int; | |
1853 | return_value = value_cast (return_type, return_value); | |
1854 | ||
1855 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1856 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1857 | if (VALUE_LAZY (return_value)) |
1858 | value_fetch_lazy (return_value); | |
1859 | } | |
1860 | ||
1861 | /* If interactive, require confirmation. */ | |
1862 | ||
1863 | if (from_tty) | |
1864 | { | |
1865 | if (thisfun != 0) | |
1866 | { | |
1867 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1868 | { | |
1869 | error ("Not confirmed."); | |
1870 | /* NOTREACHED */ | |
1871 | } | |
1872 | } | |
c5aa993b JM |
1873 | else if (!query ("Make selected stack frame return now? ")) |
1874 | error ("Not confirmed."); | |
c906108c SS |
1875 | } |
1876 | ||
1877 | /* Do the real work. Pop until the specified frame is current. We | |
1878 | use this method because the selected_frame is not valid after | |
1879 | a POP_FRAME. The pc comparison makes this work even if the | |
1880 | selected frame shares its fp with another frame. */ | |
1881 | ||
c5aa993b | 1882 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1883 | || selected_frame_pc != frame->pc) |
1884 | POP_FRAME; | |
1885 | ||
1886 | /* Then pop that frame. */ | |
1887 | ||
1888 | POP_FRAME; | |
1889 | ||
1890 | /* Compute the return value (if any) and store in the place | |
1891 | for return values. */ | |
1892 | ||
1893 | if (retval_exp) | |
1894 | set_return_value (return_value); | |
1895 | ||
1a2aab69 PS |
1896 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1897 | ||
1898 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
1899 | FRAME_FP (get_current_frame ()))) | |
1900 | POP_FRAME; | |
1901 | ||
c906108c SS |
1902 | /* If interactive, print the frame that is now current. */ |
1903 | ||
1904 | if (from_tty) | |
1905 | frame_command ("0", 1); | |
1906 | else | |
1907 | select_frame_command ("0", 0); | |
1908 | } | |
1909 | ||
1910 | /* Sets the scope to input function name, provided that the | |
1911 | function is within the current stack frame */ | |
1912 | ||
1913 | struct function_bounds | |
1914 | { | |
1915 | CORE_ADDR low, high; | |
1916 | }; | |
1917 | ||
a14ed312 | 1918 | static void func_command (char *arg, int from_tty); |
c906108c | 1919 | static void |
fba45db2 | 1920 | func_command (char *arg, int from_tty) |
c906108c SS |
1921 | { |
1922 | struct frame_info *fp; | |
1923 | int found = 0; | |
1924 | struct symtabs_and_lines sals; | |
1925 | int i; | |
1926 | int level = 1; | |
1927 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1928 | ||
1929 | if (arg != (char *) NULL) | |
1930 | return; | |
1931 | ||
1932 | fp = parse_frame_specification ("0"); | |
1933 | sals = decode_line_spec (arg, 1); | |
1934 | func_bounds = (struct function_bounds *) xmalloc ( | |
1935 | sizeof (struct function_bounds) * sals.nelts); | |
1936 | for (i = 0; (i < sals.nelts && !found); i++) | |
1937 | { | |
1938 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1939 | find_pc_partial_function (sals.sals[i].pc, | |
1940 | (char **) NULL, | |
1941 | &func_bounds[i].low, | |
1942 | &func_bounds[i].high) == 0) | |
1943 | { | |
1944 | func_bounds[i].low = | |
1945 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1946 | } | |
1947 | } | |
1948 | ||
1949 | do | |
1950 | { | |
1951 | for (i = 0; (i < sals.nelts && !found); i++) | |
1952 | found = (fp->pc >= func_bounds[i].low && | |
1953 | fp->pc < func_bounds[i].high); | |
1954 | if (!found) | |
1955 | { | |
1956 | level = 1; | |
1957 | fp = find_relative_frame (fp, &level); | |
1958 | } | |
1959 | } | |
1960 | while (!found && level == 0); | |
1961 | ||
1962 | if (func_bounds) | |
b8c9b27d | 1963 | xfree (func_bounds); |
c906108c SS |
1964 | |
1965 | if (!found) | |
1966 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1967 | else if (fp != selected_frame) | |
1968 | select_and_print_frame (fp, level); | |
1969 | } | |
1970 | ||
1971 | /* Gets the language of the current frame. */ | |
1972 | ||
1973 | enum language | |
fba45db2 | 1974 | get_frame_language (void) |
c906108c SS |
1975 | { |
1976 | register struct symtab *s; | |
1977 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1978 | |
c906108c SS |
1979 | if (selected_frame) |
1980 | { | |
c5aa993b | 1981 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1982 | if (s) |
1983 | flang = s->language; | |
1984 | else | |
1985 | flang = language_unknown; | |
1986 | } | |
1987 | else | |
1988 | flang = language_unknown; | |
1989 | ||
1990 | return flang; | |
1991 | } | |
1992 | \f | |
1993 | void | |
fba45db2 | 1994 | _initialize_stack (void) |
c906108c | 1995 | { |
c5aa993b | 1996 | #if 0 |
c906108c SS |
1997 | backtrace_limit = 30; |
1998 | #endif | |
1999 | ||
2000 | add_com ("return", class_stack, return_command, | |
2001 | "Make selected stack frame return to its caller.\n\ | |
2002 | Control remains in the debugger, but when you continue\n\ | |
2003 | execution will resume in the frame above the one now selected.\n\ | |
2004 | If an argument is given, it is an expression for the value to return."); | |
2005 | ||
2006 | add_com ("up", class_stack, up_command, | |
2007 | "Select and print stack frame that called this one.\n\ | |
2008 | An argument says how many frames up to go."); | |
2009 | add_com ("up-silently", class_support, up_silently_command, | |
2010 | "Same as the `up' command, but does not print anything.\n\ | |
2011 | This is useful in command scripts."); | |
2012 | ||
2013 | add_com ("down", class_stack, down_command, | |
2014 | "Select and print stack frame called by this one.\n\ | |
2015 | An argument says how many frames down to go."); | |
2016 | add_com_alias ("do", "down", class_stack, 1); | |
2017 | add_com_alias ("dow", "down", class_stack, 1); | |
2018 | add_com ("down-silently", class_support, down_silently_command, | |
2019 | "Same as the `down' command, but does not print anything.\n\ | |
2020 | This is useful in command scripts."); | |
2021 | ||
2022 | add_com ("frame", class_stack, frame_command, | |
2023 | "Select and print a stack frame.\n\ | |
2024 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
2025 | An argument specifies the frame to select.\n\ | |
2026 | It can be a stack frame number or the address of the frame.\n\ | |
2027 | With argument, nothing is printed if input is coming from\n\ | |
2028 | a command file or a user-defined command."); | |
2029 | ||
2030 | add_com_alias ("f", "frame", class_stack, 1); | |
2031 | ||
2032 | if (xdb_commands) | |
2033 | { | |
c5aa993b JM |
2034 | add_com ("L", class_stack, current_frame_command, |
2035 | "Print the current stack frame.\n"); | |
c906108c SS |
2036 | add_com_alias ("V", "frame", class_stack, 1); |
2037 | } | |
2038 | add_com ("select-frame", class_stack, select_frame_command, | |
2039 | "Select a stack frame without printing anything.\n\ | |
2040 | An argument specifies the frame to select.\n\ | |
2041 | It can be a stack frame number or the address of the frame.\n"); | |
2042 | ||
2043 | add_com ("backtrace", class_stack, backtrace_command, | |
2044 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
2045 | With a negative argument, print outermost -COUNT frames.\n\ | |
2046 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
2047 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
2048 | if (xdb_commands) | |
2049 | { | |
2050 | add_com_alias ("t", "backtrace", class_stack, 0); | |
2051 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 2052 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
2053 | and the values of the local variables.\n\ |
2054 | With a negative argument, print outermost -COUNT frames.\n\ | |
2055 | Usage: T <count>\n"); | |
2056 | } | |
2057 | ||
2058 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2059 | add_info ("stack", backtrace_command, | |
2060 | "Backtrace of the stack, or innermost COUNT frames."); | |
2061 | add_info_alias ("s", "stack", 1); | |
2062 | add_info ("frame", frame_info, | |
2063 | "All about selected stack frame, or frame at ADDR."); | |
2064 | add_info_alias ("f", "frame", 1); | |
2065 | add_info ("locals", locals_info, | |
2066 | "Local variables of current stack frame."); | |
2067 | add_info ("args", args_info, | |
2068 | "Argument variables of current stack frame."); | |
2069 | if (xdb_commands) | |
c5aa993b JM |
2070 | add_com ("l", class_info, args_plus_locals_info, |
2071 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2072 | |
2073 | if (dbx_commands) | |
c5aa993b JM |
2074 | add_com ("func", class_stack, func_command, |
2075 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2076 | |
2077 | add_info ("catch", catch_info, | |
2078 | "Exceptions that can be caught in the current stack frame."); | |
2079 | ||
2080 | #if 0 | |
c5aa993b JM |
2081 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2082 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2083 | &setlist); |
2084 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2085 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2086 | #endif |
2087 | } |