1 /* Print and select stack frames for GDB, the GNU debugger.
2 Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 98, 1999
3 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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, Boston, MA 02111-1307, USA. */
23 #include "gdb_string.h"
27 #include "expression.h"
33 #include "breakpoint.h"
40 /* Prototypes for exported functions. */
42 void args_info PARAMS ((char *, int));
44 void locals_info PARAMS ((char *, int));
46 void (*selected_frame_level_changed_hook) PARAMS ((int));
48 void _initialize_stack PARAMS ((void));
50 /* Prototypes for local functions. */
52 static void return_command PARAMS ((char *, int));
54 static void down_command PARAMS ((char *, int));
56 static void down_silently_base PARAMS ((char *));
58 static void down_silently_command PARAMS ((char *, int));
60 static void up_command PARAMS ((char *, int));
62 static void up_silently_base PARAMS ((char *));
64 static void up_silently_command PARAMS ((char *, int));
66 void frame_command PARAMS ((char *, int));
68 static void select_frame_command PARAMS ((char *, int));
70 static void print_frame_arg_vars PARAMS ((struct frame_info *, GDB_FILE *));
72 static void catch_info PARAMS ((char *, int));
74 static void args_plus_locals_info PARAMS ((char *, int));
76 static void print_frame_label_vars PARAMS ((struct frame_info *,
80 static void print_frame_local_vars PARAMS ((struct frame_info *,
84 static int print_block_frame_labels PARAMS ((struct block *, int *,
87 static int print_block_frame_locals PARAMS ((struct block *,
92 static void print_frame_info_base PARAMS ((struct frame_info *, int, int, int));
94 static void print_stack_frame_base PARAMS ((struct frame_info *, int, int));
96 static void backtrace_command PARAMS ((char *, int));
98 struct frame_info *parse_frame_specification PARAMS ((char *));
100 static void frame_info PARAMS ((char *, int));
102 extern int addressprint; /* Print addresses, or stay symbolic only? */
103 extern int info_verbose; /* Verbosity of symbol reading msgs */
104 extern int lines_to_list; /* # of lines "list" command shows by default */
106 /* The "selected" stack frame is used by default for local and arg access.
107 May be zero, for no selected frame. */
109 struct frame_info *selected_frame;
111 /* Level of the selected frame:
112 0 for innermost, 1 for its caller, ...
113 or -1 for frame specified by address with no defined level. */
115 int selected_frame_level;
117 /* Zero means do things normally; we are interacting directly with the
118 user. One means print the full filename and linenumber when a
119 frame is printed, and do so in a format emacs18/emacs19.22 can
120 parse. Two means print similar annotations, but in many more
121 cases and in a slightly different syntax. */
123 int annotation_level = 0;
126 struct print_stack_frame_args {
127 struct frame_info *fi;
133 static int print_stack_frame_base_stub PARAMS ((char *));
135 /* Show and print the frame arguments.
136 Pass the args the way catch_errors wants them. */
138 show_and_print_stack_frame_stub (args)
141 struct print_stack_frame_args *p = (struct print_stack_frame_args *)args;
143 /* Reversed order of these so tuiDo() doesn't occur
144 * in the middle of "Breakpoint 1 ... [location]" printing = RT
147 print_frame_info_base (p->fi, p->level, p->source, p->args);
148 print_frame_info (p->fi, p->level, p->source, p->args);
153 /* Show or print the frame arguments.
154 Pass the args the way catch_errors wants them. */
156 print_stack_frame_stub (args)
159 struct print_stack_frame_args *p = (struct print_stack_frame_args *)args;
162 print_frame_info (p->fi, p->level, p->source, p->args);
164 print_frame_info_base (p->fi, p->level, p->source, p->args);
168 /* Print a stack frame briefly. FRAME_INFI should be the frame info
169 and LEVEL should be its level in the stack (or -1 for level not
172 /* Pass the args the way catch_errors wants them. */
174 print_stack_frame_base_stub (args)
177 struct print_stack_frame_args *p = (struct print_stack_frame_args *)args;
179 print_frame_info_base (p->fi, p->level, p->source, p->args);
183 /* print the frame arguments to the terminal.
184 Pass the args the way catch_errors wants them. */
186 print_only_stack_frame_stub (args)
189 struct print_stack_frame_args *p = (struct print_stack_frame_args *)args;
191 print_frame_info_base (p->fi, p->level, p->source, p->args);
195 /* Print a stack frame briefly. FRAME_INFI should be the frame info
196 and LEVEL should be its level in the stack (or -1 for level not defined).
197 This prints the level, the function executing, the arguments,
198 and the file name and line number.
199 If the pc is not at the beginning of the source line,
200 the actual pc is printed at the beginning.
202 If SOURCE is 1, print the source line as well.
203 If SOURCE is -1, print ONLY the source line. */
206 print_stack_frame_base (fi, level, source)
207 struct frame_info *fi;
211 struct print_stack_frame_args args;
215 args.source = source;
218 catch_errors (print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL);
221 /* Show and print a stack frame briefly. FRAME_INFI should be the frame info
222 and LEVEL should be its level in the stack (or -1 for level not defined).
223 This prints the level, the function executing, the arguments,
224 and the file name and line number.
225 If the pc is not at the beginning of the source line,
226 the actual pc is printed at the beginning.
228 If SOURCE is 1, print the source line as well.
229 If SOURCE is -1, print ONLY the source line. */
232 show_and_print_stack_frame (fi, level, source)
233 struct frame_info *fi;
237 struct print_stack_frame_args args;
241 args.source = source;
244 catch_errors (show_and_print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL);
248 /* Show or print a stack frame briefly. FRAME_INFI should be the frame info
249 and LEVEL should be its level in the stack (or -1 for level not defined).
250 This prints the level, the function executing, the arguments,
251 and the file name and line number.
252 If the pc is not at the beginning of the source line,
253 the actual pc is printed at the beginning.
255 If SOURCE is 1, print the source line as well.
256 If SOURCE is -1, print ONLY the source line. */
259 print_stack_frame (fi, level, source)
260 struct frame_info *fi;
264 struct print_stack_frame_args args;
268 args.source = source;
271 catch_errors (print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL);
274 /* Print a stack frame briefly. FRAME_INFI should be the frame info
275 and LEVEL should be its level in the stack (or -1 for level not defined).
276 This prints the level, the function executing, the arguments,
277 and the file name and line number.
278 If the pc is not at the beginning of the source line,
279 the actual pc is printed at the beginning.
281 If SOURCE is 1, print the source line as well.
282 If SOURCE is -1, print ONLY the source line. */
285 print_only_stack_frame (fi, level, source)
286 struct frame_info *fi;
290 struct print_stack_frame_args args;
294 args.source = source;
297 catch_errors (print_only_stack_frame_stub,
298 (char *)&args, "", RETURN_MASK_ALL);
301 struct print_args_args {
303 struct frame_info *fi;
306 static int print_args_stub PARAMS ((PTR));
308 /* Pass the args the way catch_errors wants them. */
311 print_args_stub (args)
315 struct print_args_args *p = (struct print_args_args *)args;
317 FRAME_NUM_ARGS (numargs, (p->fi));
318 print_frame_args (p->func, p->fi, numargs, gdb_stdout);
322 /* Print information about a frame for frame "fi" at level "level".
323 * Used in "where" output, also used to emit breakpoint or step messages.
324 * LEVEL is the level of the frame, or -1 if it is the innermost frame
325 * but we don't want to print the level.
326 * The meaning of the SOURCE argument is:
327 * -1: Print only source line
328 * 0: Print only location
329 * 1: Print location and source line
333 print_frame_info_base (fi, level, source, args)
334 struct frame_info *fi;
339 struct symtab_and_line sal;
341 register char *funname = 0;
342 enum language funlang = language_unknown;
345 char buf[MAX_REGISTER_RAW_SIZE];
348 /* On the 68k, this spends too much time in m68k_find_saved_regs. */
350 /* Get the value of SP_REGNUM relative to the frame. */
351 get_saved_register (buf, (int *)NULL, (CORE_ADDR *)NULL,
352 FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *)NULL);
353 sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM));
355 /* This is not a perfect test, because if a function alloca's some
356 memory, puts some code there, and then jumps into it, then the test
357 will succeed even though there is no call dummy. Probably best is
358 to check for a bp_call_dummy breakpoint. */
359 if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame))
361 if (frame_in_dummy (fi))
364 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
366 /* Do this regardless of SOURCE because we don't have any source
367 to list for this frame. */
369 printf_filtered ("#%-2d ", level);
370 annotate_function_call ();
371 printf_filtered ("<function called from gdb>\n");
372 annotate_frame_end ();
375 if (fi->signal_handler_caller)
377 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
379 /* Do this regardless of SOURCE because we don't have any source
380 to list for this frame. */
382 printf_filtered ("#%-2d ", level);
383 annotate_signal_handler_caller ();
384 printf_filtered ("<signal handler called>\n");
385 annotate_frame_end ();
389 /* If fi is not the innermost frame, that normally means that fi->pc
390 points to *after* the call instruction, and we want to get the line
391 containing the call, never the next line. But if the next frame is
392 a signal_handler_caller or a dummy frame, then the next frame was
393 not entered as the result of a call, and we want to get the line
394 containing fi->pc. */
396 find_pc_line (fi->pc,
398 && !fi->next->signal_handler_caller
399 && !frame_in_dummy (fi->next));
401 func = find_pc_function (fi->pc);
404 /* In certain pathological cases, the symtabs give the wrong
405 function (when we are in the first function in a file which
406 is compiled without debugging symbols, the previous function
407 is compiled with debugging symbols, and the "foo.o" symbol
408 that is supposed to tell us where the file with debugging symbols
409 ends has been truncated by ar because it is longer than 15
410 characters). This also occurs if the user uses asm() to create
411 a function but not stabs for it (in a file compiled -g).
413 So look in the minimal symbol tables as well, and if it comes
414 up with a larger address for the function use that instead.
415 I don't think this can ever cause any problems; there shouldn't
416 be any minimal symbols in the middle of a function; if this is
417 ever changed many parts of GDB will need to be changed (and we'll
418 create a find_pc_minimal_function or some such). */
420 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
422 && (SYMBOL_VALUE_ADDRESS (msymbol)
423 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
426 /* There is no particular reason to think the line number
427 information is wrong. Someone might have just put in
428 a label with asm() but left the line numbers alone. */
429 /* In this case we have no way of knowing the source file
430 and line number, so don't print them. */
433 /* We also don't know anything about the function besides
434 its address and name. */
436 funname = SYMBOL_NAME (msymbol);
437 funlang = SYMBOL_LANGUAGE (msymbol);
441 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
442 * the demangled name that we already have stored in
443 * the symbol table, but we stored a version with
444 * DMGL_PARAMS turned on, and here we don't want
445 * to display parameters. So call the demangler again,
446 * with DMGL_ANSI only. RT
447 * (Yes, I know that printf_symbol_filtered() will
448 * again try to demangle the name on the fly, but
449 * the issue is that if cplus_demangle() fails here,
450 * it'll fail there too. So we want to catch the failure
451 * ("demangled==NULL" case below) here, while we still
452 * have our hands on the function symbol.)
455 funname = SYMBOL_NAME (func);
456 funlang = SYMBOL_LANGUAGE (func);
457 if (funlang == language_cplus) {
458 demangled = cplus_demangle (funname, DMGL_ANSI);
459 if (demangled == NULL)
460 /* If the demangler fails, try the demangled name
461 * from the symbol table. This'll have parameters,
462 * but that's preferable to diplaying a mangled name.
464 funname = SYMBOL_SOURCE_NAME (func);
470 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
473 funname = SYMBOL_NAME (msymbol);
474 funlang = SYMBOL_LANGUAGE (msymbol);
478 if (source >= 0 || !sal.symtab)
480 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
483 printf_filtered ("#%-2d ", level);
485 if (fi->pc != sal.pc || !sal.symtab)
487 annotate_frame_address ();
488 print_address_numeric (fi->pc, 1, gdb_stdout);
489 annotate_frame_address_end ();
490 printf_filtered (" in ");
492 annotate_frame_function_name ();
493 fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang,
496 annotate_frame_args ();
497 fputs_filtered (" (", gdb_stdout);
500 struct print_args_args args;
503 catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL);
506 printf_filtered (")");
507 if (sal.symtab && sal.symtab->filename)
509 annotate_frame_source_begin ();
511 printf_filtered (" at ");
512 annotate_frame_source_file ();
513 printf_filtered ("%s", sal.symtab->filename);
514 annotate_frame_source_file_end ();
515 printf_filtered (":");
516 annotate_frame_source_line ();
517 printf_filtered ("%d", sal.line);
518 annotate_frame_source_end ();
521 #ifdef PC_LOAD_SEGMENT
522 /* If we couldn't print out function name but if can figure out what
523 load segment this pc value is from, at least print out some info
524 about its load segment. */
527 annotate_frame_where ();
529 printf_filtered (" from %s", PC_LOAD_SEGMENT (fi->pc));
533 if (!funname || (!sal.symtab || !sal.symtab->filename))
535 char *lib = PC_SOLIB (fi->pc);
538 annotate_frame_where ();
540 printf_filtered (" from %s", lib);
544 printf_filtered ("\n");
547 if ((source != 0) && sal.symtab)
550 int mid_statement = source < 0 && fi->pc != sal.pc;
551 if (annotation_level)
552 done = identify_source_line (sal.symtab, sal.line, mid_statement,
556 if (addressprint && mid_statement && !tui_version)
558 print_address_numeric (fi->pc, 1, gdb_stdout);
559 printf_filtered ("\t");
561 if (print_frame_info_listing_hook)
562 print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0);
563 else if (!tui_version)
564 print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
566 current_source_line = max (sal.line - lines_to_list/2, 1);
569 set_default_breakpoint (1, fi->pc, sal.symtab, sal.line);
571 annotate_frame_end ();
573 gdb_flush (gdb_stdout);
578 stack_publish_stopped_with_no_frame()
580 TUIDO(((TuiOpaqueFuncPtr)tuiUpdateOnEnd));
585 /* Show or print the frame info. If this is the tui, it will be shown in
586 the source display */
588 print_frame_info(fi, level, source, args)
589 struct frame_info *fi;
595 print_frame_info_base(fi, level, source, args);
598 if (fi && (frame_in_dummy(fi) || fi->signal_handler_caller))
599 print_frame_info_base(fi, level, source, args);
602 TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi));
607 /* Show the frame info. If this is the tui, it will be shown in
608 the source display otherwise, nothing is done */
611 struct frame_info *fi;
613 TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi));
617 /* Read a frame specification in whatever the appropriate format is.
618 Call error() if the specification is in any way invalid (i.e.
619 this function never returns NULL). */
622 parse_frame_specification (frame_exp)
627 CORE_ADDR args[MAXARGS];
631 char *addr_string, *p;
632 struct cleanup *tmp_cleanup;
634 while (*frame_exp == ' ') frame_exp++;
638 if (numargs > MAXARGS)
639 error ("Too many args in frame specification");
640 /* Parse an argument. */
641 for (p = frame_exp; *p && *p != ' '; p++)
643 addr_string = savestring(frame_exp, p - frame_exp);
646 tmp_cleanup = make_cleanup (free, addr_string);
647 args[numargs++] = parse_and_eval_address (addr_string);
648 do_cleanups (tmp_cleanup);
651 /* Skip spaces, move to possible next arg. */
652 while (*p == ' ') p++;
660 if (selected_frame == NULL)
661 error ("No selected frame.");
662 return selected_frame;
667 struct frame_info *fid =
668 find_relative_frame (get_current_frame (), &level);
669 struct frame_info *tfid;
672 /* find_relative_frame was successful */
675 /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications
676 take at least 2 addresses. It is important to detect this case
677 here so that "frame 100" does not give a confusing error message
678 like "frame specification requires two addresses". This of course
679 does not solve the "frame 100" problem for machines on which
680 a frame specification can be made with one address. To solve
681 that, we need a new syntax for a specifying a frame by address.
682 I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for
683 two args, etc.), but people might think that is too much typing,
684 so I guess *0x23,0x45 would be a possible alternative (commas
685 really should be used instead of spaces to delimit; using spaces
686 normally works in an expression). */
687 #ifdef SETUP_ARBITRARY_FRAME
688 error ("No frame %d", args[0]);
691 /* If (s)he specifies the frame with an address, he deserves what
692 (s)he gets. Still, give the highest one that matches. */
694 for (fid = get_current_frame ();
695 fid && fid->frame != args[0];
696 fid = get_prev_frame (fid))
700 while ((tfid = get_prev_frame (fid)) &&
701 (tfid->frame == args[0]))
704 /* We couldn't identify the frame as an existing frame, but
705 perhaps we can create one with a single argument. */
709 #ifdef SETUP_ARBITRARY_FRAME
710 return SETUP_ARBITRARY_FRAME (numargs, args);
712 /* Usual case. Do it here rather than have everyone supply
713 a SETUP_ARBITRARY_FRAME that does this. */
715 return create_new_frame (args[0], 0);
716 error ("Too many args in frame specification");
723 /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except
724 that if it is unsure about the answer, it returns 0
725 instead of guessing (this happens on the VAX and i960, for example).
727 On most machines, we never have to guess about the args address,
728 so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */
729 #if !defined (FRAME_ARGS_ADDRESS_CORRECT)
730 #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS
733 /* Print verbosely the selected frame or the frame at address ADDR.
734 This means absolutely all information in the frame is printed. */
737 frame_info (addr_exp, from_tty)
741 struct frame_info *fi;
742 struct symtab_and_line sal;
745 struct frame_info *calling_frame_info;
746 int i, count, numregs;
748 enum language funlang = language_unknown;
750 if (!target_has_stack)
753 fi = parse_frame_specification (addr_exp);
755 error ("Invalid frame specified.");
757 sal = find_pc_line (fi->pc,
759 && !fi->next->signal_handler_caller
760 && !frame_in_dummy (fi->next));
761 func = get_frame_function (fi);
762 s = find_pc_symtab(fi->pc);
765 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
766 * the demangled name that we already have stored in
767 * the symbol table, but we stored a version with
768 * DMGL_PARAMS turned on, and here we don't want
769 * to display parameters. So call the demangler again,
770 * with DMGL_ANSI only. RT
771 * (Yes, I know that printf_symbol_filtered() will
772 * again try to demangle the name on the fly, but
773 * the issue is that if cplus_demangle() fails here,
774 * it'll fail there too. So we want to catch the failure
775 * ("demangled==NULL" case below) here, while we still
776 * have our hands on the function symbol.)
779 funname = SYMBOL_NAME (func);
780 funlang = SYMBOL_LANGUAGE (func);
781 if (funlang == language_cplus)
783 demangled = cplus_demangle (funname, DMGL_ANSI);
784 /* If the demangler fails, try the demangled name
785 * from the symbol table. This'll have parameters,
786 * but that's preferable to diplaying a mangled name.
788 if (demangled == NULL)
789 funname = SYMBOL_SOURCE_NAME (func);
794 register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
797 funname = SYMBOL_NAME (msymbol);
798 funlang = SYMBOL_LANGUAGE (msymbol);
801 calling_frame_info = get_prev_frame (fi);
803 if (!addr_exp && selected_frame_level >= 0)
805 printf_filtered ("Stack level %d, frame at ", selected_frame_level);
806 print_address_numeric (fi->frame, 1, gdb_stdout);
807 printf_filtered (":\n");
811 printf_filtered ("Stack frame at ");
812 print_address_numeric (fi->frame, 1, gdb_stdout);
813 printf_filtered (":\n");
815 printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM));
816 print_address_numeric (fi->pc, 1, gdb_stdout);
821 printf_filtered (" in ");
822 fprintf_symbol_filtered (gdb_stdout, funname, funlang,
823 DMGL_ANSI | DMGL_PARAMS);
827 printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line);
828 puts_filtered ("; ");
830 printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM));
831 print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout);
832 printf_filtered ("\n");
836 #ifdef FRAMELESS_FUNCTION_INVOCATION
837 FRAMELESS_FUNCTION_INVOCATION (fi, frameless);
840 printf_filtered (" (FRAMELESS),");
843 if (calling_frame_info)
845 printf_filtered (" called by frame at ");
846 print_address_numeric (calling_frame_info->frame, 1, gdb_stdout);
848 if (fi->next && calling_frame_info)
853 printf_filtered (" caller of frame at ");
854 print_address_numeric (fi->next->frame, 1, gdb_stdout);
856 if (fi->next || calling_frame_info)
857 puts_filtered ("\n");
859 printf_filtered (" source language %s.\n", language_str (s->language));
861 #ifdef PRINT_EXTRA_FRAME_INFO
862 PRINT_EXTRA_FRAME_INFO (fi);
866 /* Address of the argument list for this frame, or 0. */
867 CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi);
868 /* Number of args for this frame, or -1 if unknown. */
872 printf_filtered (" Arglist at unknown address.\n");
875 printf_filtered (" Arglist at ");
876 print_address_numeric (arg_list, 1, gdb_stdout);
877 printf_filtered (",");
879 FRAME_NUM_ARGS (numargs, fi);
881 puts_filtered (" args: ");
882 else if (numargs == 0)
883 puts_filtered (" no args.");
884 else if (numargs == 1)
885 puts_filtered (" 1 arg: ");
887 printf_filtered (" %d args: ", numargs);
888 print_frame_args (func, fi, numargs, gdb_stdout);
889 puts_filtered ("\n");
893 /* Address of the local variables for this frame, or 0. */
894 CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi);
897 printf_filtered (" Locals at unknown address,");
900 printf_filtered (" Locals at ");
901 print_address_numeric (arg_list, 1, gdb_stdout);
902 printf_filtered (",");
906 FRAME_INIT_SAVED_REGS (fi);
907 if (fi->saved_regs != NULL)
909 /* The sp is special; what's returned isn't the save address, but
910 actually the value of the previous frame's sp. */
911 printf_filtered (" Previous frame's sp is ");
912 print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout);
913 printf_filtered ("\n");
915 numregs = ARCH_NUM_REGS;
916 for (i = 0; i < numregs; i++)
917 if (fi->saved_regs[i] && i != SP_REGNUM)
920 puts_filtered (" Saved registers:\n ");
924 printf_filtered (" %s at ", REGISTER_NAME (i));
925 print_address_numeric (fi->saved_regs[i], 1, gdb_stdout);
929 puts_filtered ("\n");
933 /* We could get some information about saved registers by
934 calling get_saved_register on each register. Which info goes
935 with which frame is necessarily lost, however, and I suspect
936 that the users don't care whether they get the info. */
937 puts_filtered ("\n");
942 /* Set a limit on the number of frames printed by default in a
945 static int backtrace_limit;
948 set_backtrace_limit_command (count_exp, from_tty)
952 int count = parse_and_eval_address (count_exp);
955 error ("Negative argument not meaningful as backtrace limit.");
957 backtrace_limit = count;
961 backtrace_limit_info (arg, from_tty)
966 error ("\"Info backtrace-limit\" takes no arguments.");
968 printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit);
972 /* Print briefly all stack frames or just the innermost COUNT frames. */
975 backtrace_command_1 (count_exp, show_locals, from_tty)
980 struct frame_info *fi;
983 register struct frame_info *trailing;
984 register int trailing_level;
986 if (!target_has_stack)
989 /* The following code must do two things. First, it must
990 set the variable TRAILING to the frame from which we should start
991 printing. Second, it must set the variable count to the number
992 of frames which we should print, or -1 if all of them. */
993 trailing = get_current_frame ();
997 count = parse_and_eval_address (count_exp);
1000 struct frame_info *current;
1005 while (current && count--)
1008 current = get_prev_frame (current);
1011 /* Will stop when CURRENT reaches the top of the stack. TRAILING
1012 will be COUNT below it. */
1016 trailing = get_prev_frame (trailing);
1017 current = get_prev_frame (current);
1029 struct partial_symtab *ps;
1031 /* Read in symbols for all of the frames. Need to do this in
1032 a separate pass so that "Reading in symbols for xxx" messages
1033 don't screw up the appearance of the backtrace. Also
1034 if people have strong opinions against reading symbols for
1035 backtrace this may have to be an option. */
1039 fi = get_prev_frame (fi))
1042 ps = find_pc_psymtab (fi->pc);
1044 PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */
1048 for (i = 0, fi = trailing;
1050 i++, fi = get_prev_frame (fi))
1054 /* Don't use print_stack_frame; if an error() occurs it probably
1055 means further attempts to backtrace would fail (on the other
1056 hand, perhaps the code does or could be fixed to make sure
1057 the frame->prev field gets set to NULL in that case). */
1058 print_frame_info_base (fi, trailing_level + i, 0, 1);
1060 print_frame_local_vars(fi, 1, gdb_stdout);
1063 /* If we've stopped before the end, mention that. */
1065 printf_filtered ("(More stack frames follow...)\n");
1069 backtrace_command (arg, from_tty)
1073 struct cleanup *old_chain = (struct cleanup *)NULL;
1074 char **argv = (char **)NULL;
1075 int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0;
1078 if (arg != (char *)NULL)
1082 argv = buildargv(arg);
1083 old_chain = make_cleanup ((make_cleanup_func) freeargv, (char *)argv);
1085 for (i = 0; (argv[i] != (char *)NULL); i++)
1089 for (j = 0; (j < strlen(argv[i])); j++)
1090 argv[i][j] = tolower(argv[i][j]);
1092 if (argIndicatingFullTrace < 0 && subsetCompare(argv[i], "full"))
1093 argIndicatingFullTrace = argc;
1097 totArgLen += strlen(argv[i]);
1101 if (argIndicatingFullTrace >= 0)
1105 argPtr = (char *)xmalloc(totArgLen + 1);
1110 memset(argPtr, 0, totArgLen + 1);
1111 for (i = 0; (i < (argc + 1)); i++)
1113 if (i != argIndicatingFullTrace)
1115 strcat(argPtr, argv[i]);
1116 strcat(argPtr, " ");
1122 argPtr = (char *)NULL;
1126 backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty);
1128 if (argIndicatingFullTrace >= 0 && totArgLen > 0)
1132 do_cleanups(old_chain);
1136 backtrace_full_command (arg, from_tty)
1140 backtrace_command_1 (arg, 1, from_tty);
1144 /* Print the local variables of a block B active in FRAME.
1145 Return 1 if any variables were printed; 0 otherwise. */
1148 print_block_frame_locals (b, fi, num_tabs, stream)
1150 register struct frame_info *fi;
1152 register GDB_FILE *stream;
1156 register struct symbol *sym;
1157 register int values_printed = 0;
1159 nsyms = BLOCK_NSYMS (b);
1161 for (i = 0; i < nsyms; i++)
1163 sym = BLOCK_SYM (b, i);
1164 switch (SYMBOL_CLASS (sym))
1171 for (j = 0; j < num_tabs; j++)
1172 fputs_filtered("\t", stream);
1173 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1174 fputs_filtered (" = ", stream);
1175 print_variable_value (sym, fi, stream);
1176 fprintf_filtered (stream, "\n");
1180 /* Ignore symbols which are not locals. */
1184 return values_printed;
1187 /* Same, but print labels. */
1190 print_block_frame_labels (b, have_default, stream)
1193 register GDB_FILE *stream;
1197 register struct symbol *sym;
1198 register int values_printed = 0;
1200 nsyms = BLOCK_NSYMS (b);
1202 for (i = 0; i < nsyms; i++)
1204 sym = BLOCK_SYM (b, i);
1205 if (STREQ (SYMBOL_NAME (sym), "default"))
1211 if (SYMBOL_CLASS (sym) == LOC_LABEL)
1213 struct symtab_and_line sal;
1214 sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
1216 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1219 fprintf_filtered (stream, " ");
1220 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream);
1222 fprintf_filtered (stream, " in file %s, line %d\n",
1223 sal.symtab->filename, sal.line);
1226 return values_printed;
1229 /* Print on STREAM all the local variables in frame FRAME,
1230 including all the blocks active in that frame
1233 Returns 1 if the job was done,
1234 or 0 if nothing was printed because we have no info
1235 on the function running in FRAME. */
1238 print_frame_local_vars (fi, num_tabs, stream)
1239 register struct frame_info *fi;
1240 register int num_tabs;
1241 register GDB_FILE *stream;
1243 register struct block *block = get_frame_block (fi);
1244 register int values_printed = 0;
1248 fprintf_filtered (stream, "No symbol table info available.\n");
1254 if (print_block_frame_locals (block, fi, num_tabs, stream))
1256 /* After handling the function's top-level block, stop.
1257 Don't continue to its superblock, the block of
1258 per-file symbols. */
1259 if (BLOCK_FUNCTION (block))
1261 block = BLOCK_SUPERBLOCK (block);
1264 if (!values_printed)
1266 fprintf_filtered (stream, "No locals.\n");
1270 /* Same, but print labels. */
1273 print_frame_label_vars (fi, this_level_only, stream)
1274 register struct frame_info *fi;
1275 int this_level_only;
1276 register GDB_FILE *stream;
1278 register struct blockvector *bl;
1279 register struct block *block = get_frame_block (fi);
1280 register int values_printed = 0;
1281 int index, have_default = 0;
1282 char *blocks_printed;
1283 CORE_ADDR pc = fi->pc;
1287 fprintf_filtered (stream, "No symbol table info available.\n");
1291 bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
1292 blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
1293 memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
1297 CORE_ADDR end = BLOCK_END (block) - 4;
1300 if (bl != blockvector_for_pc (end, &index))
1301 error ("blockvector blotch");
1302 if (BLOCKVECTOR_BLOCK (bl, index) != block)
1303 error ("blockvector botch");
1304 last_index = BLOCKVECTOR_NBLOCKS (bl);
1307 /* Don't print out blocks that have gone by. */
1308 while (index < last_index
1309 && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
1312 while (index < last_index
1313 && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
1315 if (blocks_printed[index] == 0)
1317 if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream))
1319 blocks_printed[index] = 1;
1325 if (values_printed && this_level_only)
1328 /* After handling the function's top-level block, stop.
1329 Don't continue to its superblock, the block of
1330 per-file symbols. */
1331 if (BLOCK_FUNCTION (block))
1333 block = BLOCK_SUPERBLOCK (block);
1336 if (!values_printed && !this_level_only)
1338 fprintf_filtered (stream, "No catches.\n");
1344 locals_info (args, from_tty)
1348 if (!selected_frame)
1349 error ("No frame selected.");
1350 print_frame_local_vars (selected_frame, 0, gdb_stdout);
1354 catch_info (ignore, from_tty)
1358 struct symtab_and_line * sal;
1360 /* Check for target support for exception handling */
1361 sal = target_enable_exception_callback (EX_EVENT_CATCH, 1);
1364 /* Currently not handling this */
1365 /* Ideally, here we should interact with the C++ runtime
1366 system to find the list of active handlers, etc. */
1367 fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n");
1369 if (!selected_frame)
1370 error ("No frame selected.");
1375 /* Assume g++ compiled code -- old v 4.16 behaviour */
1376 if (!selected_frame)
1377 error ("No frame selected.");
1379 print_frame_label_vars (selected_frame, 0, gdb_stdout);
1384 print_frame_arg_vars (fi, stream)
1385 register struct frame_info *fi;
1386 register GDB_FILE *stream;
1388 struct symbol *func = get_frame_function (fi);
1389 register struct block *b;
1392 register struct symbol *sym, *sym2;
1393 register int values_printed = 0;
1397 fprintf_filtered (stream, "No symbol table info available.\n");
1401 b = SYMBOL_BLOCK_VALUE (func);
1402 nsyms = BLOCK_NSYMS (b);
1404 for (i = 0; i < nsyms; i++)
1406 sym = BLOCK_SYM (b, i);
1407 switch (SYMBOL_CLASS (sym))
1413 case LOC_REGPARM_ADDR:
1414 case LOC_BASEREG_ARG:
1416 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1417 fputs_filtered (" = ", stream);
1419 /* We have to look up the symbol because arguments can have
1420 two entries (one a parameter, one a local) and the one we
1421 want is the local, which lookup_symbol will find for us.
1422 This includes gcc1 (not gcc2) on the sparc when passing a
1423 small structure and gcc2 when the argument type is float
1424 and it is passed as a double and converted to float by
1425 the prologue (in the latter case the type of the LOC_ARG
1426 symbol is double and the type of the LOC_LOCAL symbol is
1427 float). There are also LOC_ARG/LOC_REGISTER pairs which
1428 are not combined in symbol-reading. */
1430 sym2 = lookup_symbol (SYMBOL_NAME (sym),
1431 b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL);
1432 print_variable_value (sym2, fi, stream);
1433 fprintf_filtered (stream, "\n");
1437 /* Don't worry about things which aren't arguments. */
1442 if (!values_printed)
1444 fprintf_filtered (stream, "No arguments.\n");
1449 args_info (ignore, from_tty)
1453 if (!selected_frame)
1454 error ("No frame selected.");
1455 print_frame_arg_vars (selected_frame, gdb_stdout);
1460 args_plus_locals_info (ignore, from_tty)
1464 args_info(ignore, from_tty);
1465 locals_info(ignore, from_tty);
1469 /* Select frame FI, and note that its stack level is LEVEL.
1470 LEVEL may be -1 if an actual level number is not known. */
1473 select_frame (fi, level)
1474 struct frame_info *fi;
1477 register struct symtab *s;
1479 selected_frame = fi;
1480 selected_frame_level = level;
1481 if (selected_frame_level_changed_hook)
1482 selected_frame_level_changed_hook (level);
1484 /* Ensure that symbols for this frame are read in. Also, determine the
1485 source language of this frame, and switch to it if desired. */
1488 s = find_pc_symtab (fi->pc);
1490 && s->language != current_language->la_language
1491 && s->language != language_unknown
1492 && language_mode == language_mode_auto) {
1493 set_language(s->language);
1495 /* elz: this if here fixes the problem with the pc not being displayed
1496 in the tui asm layout, with no debug symbols. The value of s
1497 would be 0 here, and select_source_symtab would abort the
1498 command by calling the 'error' function*/
1501 TUIDO(((TuiOpaqueFuncPtr)tui_vSelectSourceSymtab, s));
1507 /* Select frame FI, noting that its stack level is LEVEL. Also print
1508 the stack frame and show the source if this is the tui version. */
1510 select_and_print_frame(fi, level)
1511 struct frame_info *fi;
1514 select_frame(fi, level);
1517 print_stack_frame(fi, level, 1);
1518 TUIDO(((TuiOpaqueFuncPtr)tui_vCheckDataValues, fi));
1523 /* Select frame FI, noting that its stack level is LEVEL. Be silent if
1526 select_and_maybe_print_frame (fi, level)
1527 struct frame_info *fi;
1531 select_frame(fi, level);
1533 select_and_print_frame(fi, level);
1537 /* Store the selected frame and its level into *FRAMEP and *LEVELP.
1538 If there is no selected frame, *FRAMEP is set to NULL. */
1541 record_selected_frame (frameaddrp, levelp)
1542 CORE_ADDR *frameaddrp;
1545 *frameaddrp = selected_frame ? selected_frame->frame : 0;
1546 *levelp = selected_frame_level;
1549 /* Return the symbol-block in which the selected frame is executing.
1550 Can return zero under various legitimate circumstances. */
1553 get_selected_block ()
1555 if (!target_has_stack)
1558 if (!selected_frame)
1559 return get_current_block ();
1560 return get_frame_block (selected_frame);
1563 /* Find a frame a certain number of levels away from FRAME.
1564 LEVEL_OFFSET_PTR points to an int containing the number of levels.
1565 Positive means go to earlier frames (up); negative, the reverse.
1566 The int that contains the number of levels is counted toward
1567 zero as the frames for those levels are found.
1568 If the top or bottom frame is reached, that frame is returned,
1569 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
1570 how much farther the original request asked to go. */
1573 find_relative_frame (frame, level_offset_ptr)
1574 register struct frame_info *frame;
1575 register int *level_offset_ptr;
1577 register struct frame_info *prev;
1578 register struct frame_info *frame1;
1580 /* Going up is simple: just do get_prev_frame enough times
1581 or until initial frame is reached. */
1582 while (*level_offset_ptr > 0)
1584 prev = get_prev_frame (frame);
1587 (*level_offset_ptr)--;
1590 /* Going down is just as simple. */
1591 if (*level_offset_ptr < 0)
1593 while (*level_offset_ptr < 0) {
1594 frame1 = get_next_frame (frame);
1598 (*level_offset_ptr)++;
1604 /* The "select_frame" command. With no arg, NOP.
1605 With arg LEVEL_EXP, select the frame at level LEVEL if it is a
1606 valid level. Otherwise, treat level_exp as an address expression
1607 and select it. See parse_frame_specification for more info on proper
1608 frame expressions. */
1612 select_frame_command (level_exp, from_tty)
1616 register struct frame_info *frame, *frame1;
1617 unsigned int level = 0;
1619 if (!target_has_stack)
1620 error ("No stack.");
1622 frame = parse_frame_specification (level_exp);
1624 /* Try to figure out what level this frame is. But if there is
1625 no current stack, don't error out -- let the user set one. */
1627 if (get_current_frame()) {
1628 for (frame1 = get_prev_frame (0);
1629 frame1 && frame1 != frame;
1630 frame1 = get_prev_frame (frame1))
1637 select_frame (frame, level);
1640 /* The "frame" command. With no arg, print selected frame briefly.
1641 With arg, behaves like select_frame and then prints the selected
1645 frame_command (level_exp, from_tty)
1649 select_frame_command (level_exp, from_tty);
1650 show_and_print_stack_frame (selected_frame, selected_frame_level, 1);
1653 /* The XDB Compatibility command to print the current frame. */
1656 current_frame_command (level_exp, from_tty)
1660 if (target_has_stack == 0 || selected_frame == 0)
1661 error ("No stack.");
1662 print_only_stack_frame (selected_frame, selected_frame_level, 1);
1665 /* Select the frame up one or COUNT stack levels
1666 from the previously selected frame, and print it briefly. */
1670 up_silently_base (count_exp)
1673 register struct frame_info *fi;
1674 int count = 1, count1;
1676 count = parse_and_eval_address (count_exp);
1679 if (target_has_stack == 0 || selected_frame == 0)
1680 error ("No stack.");
1682 fi = find_relative_frame (selected_frame, &count1);
1683 if (count1 != 0 && count_exp == 0)
1684 error ("Initial frame selected; you cannot go up.");
1685 select_frame (fi, selected_frame_level + count - count1);
1689 up_silently_command (count_exp, from_tty)
1693 up_silently_base(count_exp);
1695 print_stack_frame (selected_frame, selected_frame_level, 1);
1699 up_command (count_exp, from_tty)
1703 up_silently_base (count_exp);
1704 show_and_print_stack_frame (selected_frame, selected_frame_level, 1);
1707 /* Select the frame down one or COUNT stack levels
1708 from the previously selected frame, and print it briefly. */
1712 down_silently_base (count_exp)
1715 register struct frame_info *frame;
1716 int count = -1, count1;
1718 count = - parse_and_eval_address (count_exp);
1721 if (target_has_stack == 0 || selected_frame == 0)
1722 error ("No stack.");
1724 frame = find_relative_frame (selected_frame, &count1);
1725 if (count1 != 0 && count_exp == 0)
1728 /* We only do this if count_exp is not specified. That way "down"
1729 means to really go down (and let me know if that is
1730 impossible), but "down 9999" can be used to mean go all the way
1731 down without getting an error. */
1733 error ("Bottom (i.e., innermost) frame selected; you cannot go down.");
1736 select_frame (frame, selected_frame_level + count - count1);
1741 down_silently_command (count_exp, from_tty)
1745 down_silently_base (count_exp);
1747 print_stack_frame (selected_frame, selected_frame_level, 1);
1751 down_command (count_exp, from_tty)
1755 down_silently_base (count_exp);
1756 show_and_print_stack_frame (selected_frame, selected_frame_level, 1);
1760 return_command (retval_exp, from_tty)
1764 struct symbol *thisfun;
1765 CORE_ADDR selected_frame_addr;
1766 CORE_ADDR selected_frame_pc;
1767 struct frame_info *frame;
1768 value_ptr return_value = NULL;
1770 if (selected_frame == NULL)
1771 error ("No selected frame.");
1772 thisfun = get_frame_function (selected_frame);
1773 selected_frame_addr = FRAME_FP (selected_frame);
1774 selected_frame_pc = selected_frame->pc;
1776 /* Compute the return value (if any -- possibly getting errors here). */
1780 struct type *return_type = NULL;
1782 return_value = parse_and_eval (retval_exp);
1784 /* Cast return value to the return type of the function. */
1785 if (thisfun != NULL)
1786 return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun));
1787 if (return_type == NULL)
1788 return_type = builtin_type_int;
1789 return_value = value_cast (return_type, return_value);
1791 /* Make sure we have fully evaluated it, since
1792 it might live in the stack frame we're about to pop. */
1793 if (VALUE_LAZY (return_value))
1794 value_fetch_lazy (return_value);
1797 /* If interactive, require confirmation. */
1803 if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun)))
1805 error ("Not confirmed.");
1810 if (!query ("Make selected stack frame return now? "))
1811 error ("Not confirmed.");
1814 /* Do the real work. Pop until the specified frame is current. We
1815 use this method because the selected_frame is not valid after
1816 a POP_FRAME. The pc comparison makes this work even if the
1817 selected frame shares its fp with another frame. */
1819 while (selected_frame_addr != (frame = get_current_frame())->frame
1820 || selected_frame_pc != frame->pc)
1823 /* Then pop that frame. */
1827 /* Compute the return value (if any) and store in the place
1828 for return values. */
1831 set_return_value (return_value);
1833 /* If interactive, print the frame that is now current. */
1836 frame_command ("0", 1);
1838 select_frame_command ("0", 0);
1841 /* Sets the scope to input function name, provided that the
1842 function is within the current stack frame */
1844 struct function_bounds
1846 CORE_ADDR low, high;
1850 func_command (arg, from_tty)
1854 struct frame_info *fp;
1856 struct symtabs_and_lines sals;
1859 struct function_bounds *func_bounds = (struct function_bounds *) NULL;
1861 if (arg != (char *) NULL)
1864 fp = parse_frame_specification ("0");
1865 sals = decode_line_spec (arg, 1);
1866 func_bounds = (struct function_bounds *) xmalloc (
1867 sizeof (struct function_bounds) * sals.nelts);
1868 for (i = 0; (i < sals.nelts && !found); i++)
1870 if (sals.sals[i].pc == (CORE_ADDR) 0 ||
1871 find_pc_partial_function (sals.sals[i].pc,
1873 &func_bounds[i].low,
1874 &func_bounds[i].high) == 0)
1876 func_bounds[i].low =
1877 func_bounds[i].high = (CORE_ADDR) NULL;
1883 for (i = 0; (i < sals.nelts && !found); i++)
1884 found = (fp->pc >= func_bounds[i].low &&
1885 fp->pc < func_bounds[i].high);
1889 fp = find_relative_frame (fp, &level);
1892 while (!found && level == 0);
1898 printf_filtered ("'%s' not within current stack frame.\n", arg);
1899 else if (fp != selected_frame)
1900 select_and_print_frame (fp, level);
1903 /* Gets the language of the current frame. */
1906 get_frame_language ()
1908 register struct symtab *s;
1909 enum language flang; /* The language of the current frame */
1913 s = find_pc_symtab(selected_frame->pc);
1915 flang = s->language;
1917 flang = language_unknown;
1920 flang = language_unknown;
1926 _initialize_stack ()
1929 backtrace_limit = 30;
1932 add_com ("return", class_stack, return_command,
1933 "Make selected stack frame return to its caller.\n\
1934 Control remains in the debugger, but when you continue\n\
1935 execution will resume in the frame above the one now selected.\n\
1936 If an argument is given, it is an expression for the value to return.");
1938 add_com ("up", class_stack, up_command,
1939 "Select and print stack frame that called this one.\n\
1940 An argument says how many frames up to go.");
1941 add_com ("up-silently", class_support, up_silently_command,
1942 "Same as the `up' command, but does not print anything.\n\
1943 This is useful in command scripts.");
1945 add_com ("down", class_stack, down_command,
1946 "Select and print stack frame called by this one.\n\
1947 An argument says how many frames down to go.");
1948 add_com_alias ("do", "down", class_stack, 1);
1949 add_com_alias ("dow", "down", class_stack, 1);
1950 add_com ("down-silently", class_support, down_silently_command,
1951 "Same as the `down' command, but does not print anything.\n\
1952 This is useful in command scripts.");
1954 add_com ("frame", class_stack, frame_command,
1955 "Select and print a stack frame.\n\
1956 With no argument, print the selected stack frame. (See also \"info frame\").\n\
1957 An argument specifies the frame to select.\n\
1958 It can be a stack frame number or the address of the frame.\n\
1959 With argument, nothing is printed if input is coming from\n\
1960 a command file or a user-defined command.");
1962 add_com_alias ("f", "frame", class_stack, 1);
1966 add_com("L", class_stack, current_frame_command,
1967 "Print the current stack frame.\n");
1968 add_com_alias ("V", "frame", class_stack, 1);
1970 add_com ("select-frame", class_stack, select_frame_command,
1971 "Select a stack frame without printing anything.\n\
1972 An argument specifies the frame to select.\n\
1973 It can be a stack frame number or the address of the frame.\n");
1975 add_com ("backtrace", class_stack, backtrace_command,
1976 "Print backtrace of all stack frames, or innermost COUNT frames.\n\
1977 With a negative argument, print outermost -COUNT frames.\n\
1978 Use of the 'full' qualifier also prints the values of the local variables.\n");
1979 add_com_alias ("bt", "backtrace", class_stack, 0);
1982 add_com_alias ("t", "backtrace", class_stack, 0);
1983 add_com ("T", class_stack, backtrace_full_command,
1984 "Print backtrace of all stack frames, or innermost COUNT frames \n\
1985 and the values of the local variables.\n\
1986 With a negative argument, print outermost -COUNT frames.\n\
1987 Usage: T <count>\n");
1990 add_com_alias ("where", "backtrace", class_alias, 0);
1991 add_info ("stack", backtrace_command,
1992 "Backtrace of the stack, or innermost COUNT frames.");
1993 add_info_alias ("s", "stack", 1);
1994 add_info ("frame", frame_info,
1995 "All about selected stack frame, or frame at ADDR.");
1996 add_info_alias ("f", "frame", 1);
1997 add_info ("locals", locals_info,
1998 "Local variables of current stack frame.");
1999 add_info ("args", args_info,
2000 "Argument variables of current stack frame.");
2002 add_com("l", class_info, args_plus_locals_info,
2003 "Argument and local variables of current stack frame.");
2006 add_com("func", class_stack, func_command,
2007 "Select the stack frame that contains <func>.\nUsage: func <name>\n");
2009 add_info ("catch", catch_info,
2010 "Exceptions that can be caught in the current stack frame.");
2013 add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command,
2014 "Specify maximum number of frames for \"backtrace\" to print by default.",
2016 add_info ("backtrace-limit", backtrace_limit_info,
2017 "The maximum number of frames for \"backtrace\" to print by default.");