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 current_frame_command
PARAMS ((char *, int));
70 static void select_frame_command
PARAMS ((char *, int));
72 static void print_frame_arg_vars
PARAMS ((struct frame_info
*, GDB_FILE
*));
74 static void catch_info
PARAMS ((char *, int));
76 static void args_plus_locals_info
PARAMS ((char *, int));
78 static void print_frame_label_vars
PARAMS ((struct frame_info
*,
82 static void print_frame_local_vars
PARAMS ((struct frame_info
*,
86 static int print_block_frame_labels
PARAMS ((struct block
*, int *,
89 static int print_block_frame_locals
PARAMS ((struct block
*,
94 static void print_frame_info_base
PARAMS ((struct frame_info
*, int, int, int));
96 static void print_stack_frame_base
PARAMS ((struct frame_info
*, int, int));
98 static void backtrace_command
PARAMS ((char *, int));
100 struct frame_info
*parse_frame_specification
PARAMS ((char *));
102 static void frame_info
PARAMS ((char *, int));
104 extern int addressprint
; /* Print addresses, or stay symbolic only? */
105 extern int info_verbose
; /* Verbosity of symbol reading msgs */
106 extern int lines_to_list
; /* # of lines "list" command shows by default */
108 /* The "selected" stack frame is used by default for local and arg access.
109 May be zero, for no selected frame. */
111 struct frame_info
*selected_frame
;
113 /* Level of the selected frame:
114 0 for innermost, 1 for its caller, ...
115 or -1 for frame specified by address with no defined level. */
117 int selected_frame_level
;
119 /* Zero means do things normally; we are interacting directly with the
120 user. One means print the full filename and linenumber when a
121 frame is printed, and do so in a format emacs18/emacs19.22 can
122 parse. Two means print similar annotations, but in many more
123 cases and in a slightly different syntax. */
125 int annotation_level
= 0;
128 struct print_stack_frame_args
{
129 struct frame_info
*fi
;
135 static int print_stack_frame_base_stub
PARAMS ((char *));
137 /* Show and print the frame arguments.
138 Pass the args the way catch_errors wants them. */
139 static int show_and_print_stack_frame_stub
PARAMS ((void *args
));
141 show_and_print_stack_frame_stub (args
)
144 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*)args
;
146 /* Reversed order of these so tuiDo() doesn't occur
147 * in the middle of "Breakpoint 1 ... [location]" printing = RT
150 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
151 print_frame_info (p
->fi
, p
->level
, p
->source
, p
->args
);
156 /* Show or print the frame arguments.
157 Pass the args the way catch_errors wants them. */
158 static int print_stack_frame_stub
PARAMS ((void *args
));
160 print_stack_frame_stub (args
)
163 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*)args
;
166 print_frame_info (p
->fi
, p
->level
, p
->source
, p
->args
);
168 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
172 /* Print a stack frame briefly. FRAME_INFI should be the frame info
173 and LEVEL should be its level in the stack (or -1 for level not
176 /* Pass the args the way catch_errors wants them. */
178 print_stack_frame_base_stub (args
)
181 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*)args
;
183 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
187 /* print the frame arguments to the terminal.
188 Pass the args the way catch_errors wants them. */
189 static int print_only_stack_frame_stub
PARAMS ((void *));
191 print_only_stack_frame_stub (args
)
194 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*)args
;
196 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
200 /* Print a stack frame briefly. FRAME_INFI should be the frame info
201 and LEVEL should be its level in the stack (or -1 for level not defined).
202 This prints the level, the function executing, the arguments,
203 and the file name and line number.
204 If the pc is not at the beginning of the source line,
205 the actual pc is printed at the beginning.
207 If SOURCE is 1, print the source line as well.
208 If SOURCE is -1, print ONLY the source line. */
211 print_stack_frame_base (fi
, level
, source
)
212 struct frame_info
*fi
;
216 struct print_stack_frame_args args
;
220 args
.source
= source
;
223 catch_errors (print_stack_frame_stub
, &args
, "", RETURN_MASK_ALL
);
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.
233 If SOURCE is 1, print the source line as well.
234 If SOURCE is -1, print ONLY the source line. */
237 show_and_print_stack_frame (fi
, level
, source
)
238 struct frame_info
*fi
;
242 struct print_stack_frame_args args
;
246 args
.source
= source
;
249 catch_errors (show_and_print_stack_frame_stub
, &args
, "", RETURN_MASK_ALL
);
253 /* Show or print a stack frame briefly. FRAME_INFI should be the frame info
254 and LEVEL should be its level in the stack (or -1 for level not defined).
255 This prints the level, the function executing, the arguments,
256 and the file name and line number.
257 If the pc is not at the beginning of the source line,
258 the actual pc is printed at the beginning.
260 If SOURCE is 1, print the source line as well.
261 If SOURCE is -1, print ONLY the source line. */
264 print_stack_frame (fi
, level
, source
)
265 struct frame_info
*fi
;
269 struct print_stack_frame_args args
;
273 args
.source
= source
;
276 catch_errors (print_stack_frame_stub
, (char *)&args
, "", RETURN_MASK_ALL
);
279 /* Print a stack frame briefly. FRAME_INFI should be the frame info
280 and LEVEL should be its level in the stack (or -1 for level not defined).
281 This prints the level, the function executing, the arguments,
282 and the file name and line number.
283 If the pc is not at the beginning of the source line,
284 the actual pc is printed at the beginning.
286 If SOURCE is 1, print the source line as well.
287 If SOURCE is -1, print ONLY the source line. */
290 print_only_stack_frame (fi
, level
, source
)
291 struct frame_info
*fi
;
295 struct print_stack_frame_args args
;
299 args
.source
= source
;
302 catch_errors (print_only_stack_frame_stub
, &args
, "", RETURN_MASK_ALL
);
305 struct print_args_args
{
307 struct frame_info
*fi
;
310 static int print_args_stub
PARAMS ((PTR
));
312 /* Pass the args the way catch_errors wants them. */
315 print_args_stub (args
)
319 struct print_args_args
*p
= (struct print_args_args
*)args
;
321 FRAME_NUM_ARGS (numargs
, (p
->fi
));
322 print_frame_args (p
->func
, p
->fi
, numargs
, gdb_stdout
);
326 /* Print information about a frame for frame "fi" at level "level".
327 * Used in "where" output, also used to emit breakpoint or step messages.
328 * LEVEL is the level of the frame, or -1 if it is the innermost frame
329 * but we don't want to print the level.
330 * The meaning of the SOURCE argument is:
331 * -1: Print only source line
332 * 0: Print only location
333 * 1: Print location and source line
337 print_frame_info_base (fi
, level
, source
, args
)
338 struct frame_info
*fi
;
343 struct symtab_and_line sal
;
345 register char *funname
= 0;
346 enum language funlang
= language_unknown
;
349 char buf
[MAX_REGISTER_RAW_SIZE
];
352 /* On the 68k, this spends too much time in m68k_find_saved_regs. */
354 /* Get the value of SP_REGNUM relative to the frame. */
355 get_saved_register (buf
, (int *)NULL
, (CORE_ADDR
*)NULL
,
356 FRAME_INFO_ID (fi
), SP_REGNUM
, (enum lval_type
*)NULL
);
357 sp
= extract_address (buf
, REGISTER_RAW_SIZE (SP_REGNUM
));
359 /* This is not a perfect test, because if a function alloca's some
360 memory, puts some code there, and then jumps into it, then the test
361 will succeed even though there is no call dummy. Probably best is
362 to check for a bp_call_dummy breakpoint. */
363 if (PC_IN_CALL_DUMMY (fi
->pc
, sp
, fi
->frame
))
365 if (frame_in_dummy (fi
))
368 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
370 /* Do this regardless of SOURCE because we don't have any source
371 to list for this frame. */
373 printf_filtered ("#%-2d ", level
);
374 annotate_function_call ();
375 printf_filtered ("<function called from gdb>\n");
376 annotate_frame_end ();
379 if (fi
->signal_handler_caller
)
381 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
383 /* Do this regardless of SOURCE because we don't have any source
384 to list for this frame. */
386 printf_filtered ("#%-2d ", level
);
387 annotate_signal_handler_caller ();
388 printf_filtered ("<signal handler called>\n");
389 annotate_frame_end ();
393 /* If fi is not the innermost frame, that normally means that fi->pc
394 points to *after* the call instruction, and we want to get the line
395 containing the call, never the next line. But if the next frame is
396 a signal_handler_caller or a dummy frame, then the next frame was
397 not entered as the result of a call, and we want to get the line
398 containing fi->pc. */
400 find_pc_line (fi
->pc
,
402 && !fi
->next
->signal_handler_caller
403 && !frame_in_dummy (fi
->next
));
405 func
= find_pc_function (fi
->pc
);
408 /* In certain pathological cases, the symtabs give the wrong
409 function (when we are in the first function in a file which
410 is compiled without debugging symbols, the previous function
411 is compiled with debugging symbols, and the "foo.o" symbol
412 that is supposed to tell us where the file with debugging symbols
413 ends has been truncated by ar because it is longer than 15
414 characters). This also occurs if the user uses asm() to create
415 a function but not stabs for it (in a file compiled -g).
417 So look in the minimal symbol tables as well, and if it comes
418 up with a larger address for the function use that instead.
419 I don't think this can ever cause any problems; there shouldn't
420 be any minimal symbols in the middle of a function; if this is
421 ever changed many parts of GDB will need to be changed (and we'll
422 create a find_pc_minimal_function or some such). */
424 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
426 && (SYMBOL_VALUE_ADDRESS (msymbol
)
427 > BLOCK_START (SYMBOL_BLOCK_VALUE (func
))))
430 /* There is no particular reason to think the line number
431 information is wrong. Someone might have just put in
432 a label with asm() but left the line numbers alone. */
433 /* In this case we have no way of knowing the source file
434 and line number, so don't print them. */
437 /* We also don't know anything about the function besides
438 its address and name. */
440 funname
= SYMBOL_NAME (msymbol
);
441 funlang
= SYMBOL_LANGUAGE (msymbol
);
445 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
446 * the demangled name that we already have stored in
447 * the symbol table, but we stored a version with
448 * DMGL_PARAMS turned on, and here we don't want
449 * to display parameters. So call the demangler again,
450 * with DMGL_ANSI only. RT
451 * (Yes, I know that printf_symbol_filtered() will
452 * again try to demangle the name on the fly, but
453 * the issue is that if cplus_demangle() fails here,
454 * it'll fail there too. So we want to catch the failure
455 * ("demangled==NULL" case below) here, while we still
456 * have our hands on the function symbol.)
459 funname
= SYMBOL_NAME (func
);
460 funlang
= SYMBOL_LANGUAGE (func
);
461 if (funlang
== language_cplus
) {
462 demangled
= cplus_demangle (funname
, DMGL_ANSI
);
463 if (demangled
== NULL
)
464 /* If the demangler fails, try the demangled name
465 * from the symbol table. This'll have parameters,
466 * but that's preferable to diplaying a mangled name.
468 funname
= SYMBOL_SOURCE_NAME (func
);
474 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
477 funname
= SYMBOL_NAME (msymbol
);
478 funlang
= SYMBOL_LANGUAGE (msymbol
);
482 if (source
>= 0 || !sal
.symtab
)
484 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
487 printf_filtered ("#%-2d ", level
);
489 if (fi
->pc
!= sal
.pc
|| !sal
.symtab
)
491 annotate_frame_address ();
492 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
493 annotate_frame_address_end ();
494 printf_filtered (" in ");
496 annotate_frame_function_name ();
497 fprintf_symbol_filtered (gdb_stdout
, funname
? funname
: "??", funlang
,
500 annotate_frame_args ();
501 fputs_filtered (" (", gdb_stdout
);
504 struct print_args_args args
;
507 catch_errors (print_args_stub
, &args
, "", RETURN_MASK_ALL
);
510 printf_filtered (")");
511 if (sal
.symtab
&& sal
.symtab
->filename
)
513 annotate_frame_source_begin ();
515 printf_filtered (" at ");
516 annotate_frame_source_file ();
517 printf_filtered ("%s", sal
.symtab
->filename
);
518 annotate_frame_source_file_end ();
519 printf_filtered (":");
520 annotate_frame_source_line ();
521 printf_filtered ("%d", sal
.line
);
522 annotate_frame_source_end ();
525 #ifdef PC_LOAD_SEGMENT
526 /* If we couldn't print out function name but if can figure out what
527 load segment this pc value is from, at least print out some info
528 about its load segment. */
531 annotate_frame_where ();
533 printf_filtered (" from %s", PC_LOAD_SEGMENT (fi
->pc
));
537 if (!funname
|| (!sal
.symtab
|| !sal
.symtab
->filename
))
539 char *lib
= PC_SOLIB (fi
->pc
);
542 annotate_frame_where ();
544 printf_filtered (" from %s", lib
);
548 printf_filtered ("\n");
551 if ((source
!= 0) && sal
.symtab
)
554 int mid_statement
= source
< 0 && fi
->pc
!= sal
.pc
;
555 if (annotation_level
)
556 done
= identify_source_line (sal
.symtab
, sal
.line
, mid_statement
,
560 if (addressprint
&& mid_statement
&& !tui_version
)
562 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
563 printf_filtered ("\t");
565 if (print_frame_info_listing_hook
)
566 print_frame_info_listing_hook (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
567 else if (!tui_version
)
568 print_source_lines (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
570 current_source_line
= max (sal
.line
- lines_to_list
/2, 1);
573 set_default_breakpoint (1, fi
->pc
, sal
.symtab
, sal
.line
);
575 annotate_frame_end ();
577 gdb_flush (gdb_stdout
);
583 stack_publish_stopped_with_no_frame()
585 TUIDO(((TuiOpaqueFuncPtr
)tuiUpdateOnEnd
));
591 /* Show or print the frame info. If this is the tui, it will be shown in
592 the source display */
594 print_frame_info(fi
, level
, source
, args
)
595 struct frame_info
*fi
;
601 print_frame_info_base(fi
, level
, source
, args
);
604 if (fi
&& (frame_in_dummy(fi
) || fi
->signal_handler_caller
))
605 print_frame_info_base(fi
, level
, source
, args
);
608 TUIDO(((TuiOpaqueFuncPtr
)tui_vShowFrameInfo
, fi
));
613 /* Show the frame info. If this is the tui, it will be shown in
614 the source display otherwise, nothing is done */
617 struct frame_info
*fi
;
619 TUIDO(((TuiOpaqueFuncPtr
)tui_vShowFrameInfo
, fi
));
623 /* Read a frame specification in whatever the appropriate format is.
624 Call error() if the specification is in any way invalid (i.e.
625 this function never returns NULL). */
628 parse_frame_specification (frame_exp
)
633 CORE_ADDR args
[MAXARGS
];
637 char *addr_string
, *p
;
638 struct cleanup
*tmp_cleanup
;
640 while (*frame_exp
== ' ') frame_exp
++;
644 if (numargs
> MAXARGS
)
645 error ("Too many args in frame specification");
646 /* Parse an argument. */
647 for (p
= frame_exp
; *p
&& *p
!= ' '; p
++)
649 addr_string
= savestring(frame_exp
, p
- frame_exp
);
652 tmp_cleanup
= make_cleanup (free
, addr_string
);
653 args
[numargs
++] = parse_and_eval_address (addr_string
);
654 do_cleanups (tmp_cleanup
);
657 /* Skip spaces, move to possible next arg. */
658 while (*p
== ' ') p
++;
666 if (selected_frame
== NULL
)
667 error ("No selected frame.");
668 return selected_frame
;
673 struct frame_info
*fid
=
674 find_relative_frame (get_current_frame (), &level
);
675 struct frame_info
*tfid
;
678 /* find_relative_frame was successful */
681 /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications
682 take at least 2 addresses. It is important to detect this case
683 here so that "frame 100" does not give a confusing error message
684 like "frame specification requires two addresses". This of course
685 does not solve the "frame 100" problem for machines on which
686 a frame specification can be made with one address. To solve
687 that, we need a new syntax for a specifying a frame by address.
688 I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for
689 two args, etc.), but people might think that is too much typing,
690 so I guess *0x23,0x45 would be a possible alternative (commas
691 really should be used instead of spaces to delimit; using spaces
692 normally works in an expression). */
693 #ifdef SETUP_ARBITRARY_FRAME
694 error ("No frame %d", args
[0]);
697 /* If (s)he specifies the frame with an address, he deserves what
698 (s)he gets. Still, give the highest one that matches. */
700 for (fid
= get_current_frame ();
701 fid
&& fid
->frame
!= args
[0];
702 fid
= get_prev_frame (fid
))
706 while ((tfid
= get_prev_frame (fid
)) &&
707 (tfid
->frame
== args
[0]))
710 /* We couldn't identify the frame as an existing frame, but
711 perhaps we can create one with a single argument. */
715 #ifdef SETUP_ARBITRARY_FRAME
716 return SETUP_ARBITRARY_FRAME (numargs
, args
);
718 /* Usual case. Do it here rather than have everyone supply
719 a SETUP_ARBITRARY_FRAME that does this. */
721 return create_new_frame (args
[0], 0);
722 error ("Too many args in frame specification");
729 /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except
730 that if it is unsure about the answer, it returns 0
731 instead of guessing (this happens on the VAX and i960, for example).
733 On most machines, we never have to guess about the args address,
734 so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */
735 #if !defined (FRAME_ARGS_ADDRESS_CORRECT)
736 #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS
739 /* Print verbosely the selected frame or the frame at address ADDR.
740 This means absolutely all information in the frame is printed. */
743 frame_info (addr_exp
, from_tty
)
747 struct frame_info
*fi
;
748 struct symtab_and_line sal
;
751 struct frame_info
*calling_frame_info
;
752 int i
, count
, numregs
;
754 enum language funlang
= language_unknown
;
756 if (!target_has_stack
)
759 fi
= parse_frame_specification (addr_exp
);
761 error ("Invalid frame specified.");
763 sal
= find_pc_line (fi
->pc
,
765 && !fi
->next
->signal_handler_caller
766 && !frame_in_dummy (fi
->next
));
767 func
= get_frame_function (fi
);
768 s
= find_pc_symtab(fi
->pc
);
771 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
772 * the demangled name that we already have stored in
773 * the symbol table, but we stored a version with
774 * DMGL_PARAMS turned on, and here we don't want
775 * to display parameters. So call the demangler again,
776 * with DMGL_ANSI only. RT
777 * (Yes, I know that printf_symbol_filtered() will
778 * again try to demangle the name on the fly, but
779 * the issue is that if cplus_demangle() fails here,
780 * it'll fail there too. So we want to catch the failure
781 * ("demangled==NULL" case below) here, while we still
782 * have our hands on the function symbol.)
785 funname
= SYMBOL_NAME (func
);
786 funlang
= SYMBOL_LANGUAGE (func
);
787 if (funlang
== language_cplus
)
789 demangled
= cplus_demangle (funname
, DMGL_ANSI
);
790 /* If the demangler fails, try the demangled name
791 * from the symbol table. This'll have parameters,
792 * but that's preferable to diplaying a mangled name.
794 if (demangled
== NULL
)
795 funname
= SYMBOL_SOURCE_NAME (func
);
800 register struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
803 funname
= SYMBOL_NAME (msymbol
);
804 funlang
= SYMBOL_LANGUAGE (msymbol
);
807 calling_frame_info
= get_prev_frame (fi
);
809 if (!addr_exp
&& selected_frame_level
>= 0)
811 printf_filtered ("Stack level %d, frame at ", selected_frame_level
);
812 print_address_numeric (fi
->frame
, 1, gdb_stdout
);
813 printf_filtered (":\n");
817 printf_filtered ("Stack frame at ");
818 print_address_numeric (fi
->frame
, 1, gdb_stdout
);
819 printf_filtered (":\n");
821 printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM
));
822 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
827 printf_filtered (" in ");
828 fprintf_symbol_filtered (gdb_stdout
, funname
, funlang
,
829 DMGL_ANSI
| DMGL_PARAMS
);
833 printf_filtered (" (%s:%d)", sal
.symtab
->filename
, sal
.line
);
834 puts_filtered ("; ");
836 printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM
));
837 print_address_numeric (FRAME_SAVED_PC (fi
), 1, gdb_stdout
);
838 printf_filtered ("\n");
842 #ifdef FRAMELESS_FUNCTION_INVOCATION
843 FRAMELESS_FUNCTION_INVOCATION (fi
, frameless
);
846 printf_filtered (" (FRAMELESS),");
849 if (calling_frame_info
)
851 printf_filtered (" called by frame at ");
852 print_address_numeric (calling_frame_info
->frame
, 1, gdb_stdout
);
854 if (fi
->next
&& calling_frame_info
)
859 printf_filtered (" caller of frame at ");
860 print_address_numeric (fi
->next
->frame
, 1, gdb_stdout
);
862 if (fi
->next
|| calling_frame_info
)
863 puts_filtered ("\n");
865 printf_filtered (" source language %s.\n", language_str (s
->language
));
867 #ifdef PRINT_EXTRA_FRAME_INFO
868 PRINT_EXTRA_FRAME_INFO (fi
);
872 /* Address of the argument list for this frame, or 0. */
873 CORE_ADDR arg_list
= FRAME_ARGS_ADDRESS_CORRECT (fi
);
874 /* Number of args for this frame, or -1 if unknown. */
878 printf_filtered (" Arglist at unknown address.\n");
881 printf_filtered (" Arglist at ");
882 print_address_numeric (arg_list
, 1, gdb_stdout
);
883 printf_filtered (",");
885 FRAME_NUM_ARGS (numargs
, fi
);
887 puts_filtered (" args: ");
888 else if (numargs
== 0)
889 puts_filtered (" no args.");
890 else if (numargs
== 1)
891 puts_filtered (" 1 arg: ");
893 printf_filtered (" %d args: ", numargs
);
894 print_frame_args (func
, fi
, numargs
, gdb_stdout
);
895 puts_filtered ("\n");
899 /* Address of the local variables for this frame, or 0. */
900 CORE_ADDR arg_list
= FRAME_LOCALS_ADDRESS (fi
);
903 printf_filtered (" Locals at unknown address,");
906 printf_filtered (" Locals at ");
907 print_address_numeric (arg_list
, 1, gdb_stdout
);
908 printf_filtered (",");
912 FRAME_INIT_SAVED_REGS (fi
);
913 if (fi
->saved_regs
!= NULL
)
915 /* The sp is special; what's returned isn't the save address, but
916 actually the value of the previous frame's sp. */
917 printf_filtered (" Previous frame's sp is ");
918 print_address_numeric (fi
->saved_regs
[SP_REGNUM
], 1, gdb_stdout
);
919 printf_filtered ("\n");
921 numregs
= ARCH_NUM_REGS
;
922 for (i
= 0; i
< numregs
; i
++)
923 if (fi
->saved_regs
[i
] && i
!= SP_REGNUM
)
926 puts_filtered (" Saved registers:\n ");
930 printf_filtered (" %s at ", REGISTER_NAME (i
));
931 print_address_numeric (fi
->saved_regs
[i
], 1, gdb_stdout
);
935 puts_filtered ("\n");
939 /* We could get some information about saved registers by
940 calling get_saved_register on each register. Which info goes
941 with which frame is necessarily lost, however, and I suspect
942 that the users don't care whether they get the info. */
943 puts_filtered ("\n");
948 /* Set a limit on the number of frames printed by default in a
951 static int backtrace_limit
;
954 set_backtrace_limit_command (count_exp
, from_tty
)
958 int count
= parse_and_eval_address (count_exp
);
961 error ("Negative argument not meaningful as backtrace limit.");
963 backtrace_limit
= count
;
967 backtrace_limit_info (arg
, from_tty
)
972 error ("\"Info backtrace-limit\" takes no arguments.");
974 printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit
);
978 /* Print briefly all stack frames or just the innermost COUNT frames. */
980 static void backtrace_command_1
PARAMS ((char *count_exp
, int show_locals
, int from_tty
));
982 backtrace_command_1 (count_exp
, show_locals
, from_tty
)
987 struct frame_info
*fi
;
990 register struct frame_info
*trailing
;
991 register int trailing_level
;
993 if (!target_has_stack
)
996 /* The following code must do two things. First, it must
997 set the variable TRAILING to the frame from which we should start
998 printing. Second, it must set the variable count to the number
999 of frames which we should print, or -1 if all of them. */
1000 trailing
= get_current_frame ();
1004 count
= parse_and_eval_address (count_exp
);
1007 struct frame_info
*current
;
1012 while (current
&& count
--)
1015 current
= get_prev_frame (current
);
1018 /* Will stop when CURRENT reaches the top of the stack. TRAILING
1019 will be COUNT below it. */
1023 trailing
= get_prev_frame (trailing
);
1024 current
= get_prev_frame (current
);
1036 struct partial_symtab
*ps
;
1038 /* Read in symbols for all of the frames. Need to do this in
1039 a separate pass so that "Reading in symbols for xxx" messages
1040 don't screw up the appearance of the backtrace. Also
1041 if people have strong opinions against reading symbols for
1042 backtrace this may have to be an option. */
1046 fi
= get_prev_frame (fi
))
1049 ps
= find_pc_psymtab (fi
->pc
);
1051 PSYMTAB_TO_SYMTAB (ps
); /* Force syms to come in */
1055 for (i
= 0, fi
= trailing
;
1057 i
++, fi
= get_prev_frame (fi
))
1061 /* Don't use print_stack_frame; if an error() occurs it probably
1062 means further attempts to backtrace would fail (on the other
1063 hand, perhaps the code does or could be fixed to make sure
1064 the frame->prev field gets set to NULL in that case). */
1065 print_frame_info_base (fi
, trailing_level
+ i
, 0, 1);
1067 print_frame_local_vars(fi
, 1, gdb_stdout
);
1070 /* If we've stopped before the end, mention that. */
1072 printf_filtered ("(More stack frames follow...)\n");
1076 backtrace_command (arg
, from_tty
)
1080 struct cleanup
*old_chain
= (struct cleanup
*)NULL
;
1081 char **argv
= (char **)NULL
;
1082 int argIndicatingFullTrace
= (-1), totArgLen
= 0, argc
= 0;
1085 if (arg
!= (char *)NULL
)
1089 argv
= buildargv(arg
);
1090 old_chain
= make_cleanup_freeargv (argv
);
1092 for (i
= 0; (argv
[i
] != (char *)NULL
); i
++)
1096 for (j
= 0; (j
< strlen(argv
[i
])); j
++)
1097 argv
[i
][j
] = tolower(argv
[i
][j
]);
1099 if (argIndicatingFullTrace
< 0 && subset_compare (argv
[i
], "full"))
1100 argIndicatingFullTrace
= argc
;
1104 totArgLen
+= strlen(argv
[i
]);
1108 if (argIndicatingFullTrace
>= 0)
1112 argPtr
= (char *)xmalloc(totArgLen
+ 1);
1117 memset(argPtr
, 0, totArgLen
+ 1);
1118 for (i
= 0; (i
< (argc
+ 1)); i
++)
1120 if (i
!= argIndicatingFullTrace
)
1122 strcat(argPtr
, argv
[i
]);
1123 strcat(argPtr
, " ");
1129 argPtr
= (char *)NULL
;
1133 backtrace_command_1 (argPtr
, (argIndicatingFullTrace
>= 0), from_tty
);
1135 if (argIndicatingFullTrace
>= 0 && totArgLen
> 0)
1139 do_cleanups(old_chain
);
1142 static void backtrace_full_command
PARAMS ((char *arg
, int from_tty
));
1144 backtrace_full_command (arg
, from_tty
)
1148 backtrace_command_1 (arg
, 1, from_tty
);
1152 /* Print the local variables of a block B active in FRAME.
1153 Return 1 if any variables were printed; 0 otherwise. */
1156 print_block_frame_locals (b
, fi
, num_tabs
, stream
)
1158 register struct frame_info
*fi
;
1160 register GDB_FILE
*stream
;
1164 register struct symbol
*sym
;
1165 register int values_printed
= 0;
1167 nsyms
= BLOCK_NSYMS (b
);
1169 for (i
= 0; i
< nsyms
; i
++)
1171 sym
= BLOCK_SYM (b
, i
);
1172 switch (SYMBOL_CLASS (sym
))
1179 for (j
= 0; j
< num_tabs
; j
++)
1180 fputs_filtered("\t", stream
);
1181 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1182 fputs_filtered (" = ", stream
);
1183 print_variable_value (sym
, fi
, stream
);
1184 fprintf_filtered (stream
, "\n");
1188 /* Ignore symbols which are not locals. */
1192 return values_printed
;
1195 /* Same, but print labels. */
1198 print_block_frame_labels (b
, have_default
, stream
)
1201 register GDB_FILE
*stream
;
1205 register struct symbol
*sym
;
1206 register int values_printed
= 0;
1208 nsyms
= BLOCK_NSYMS (b
);
1210 for (i
= 0; i
< nsyms
; i
++)
1212 sym
= BLOCK_SYM (b
, i
);
1213 if (STREQ (SYMBOL_NAME (sym
), "default"))
1219 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
1221 struct symtab_and_line sal
;
1222 sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
), 0);
1224 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1227 fprintf_filtered (stream
, " ");
1228 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym
), 1, stream
);
1230 fprintf_filtered (stream
, " in file %s, line %d\n",
1231 sal
.symtab
->filename
, sal
.line
);
1234 return values_printed
;
1237 /* Print on STREAM all the local variables in frame FRAME,
1238 including all the blocks active in that frame
1241 Returns 1 if the job was done,
1242 or 0 if nothing was printed because we have no info
1243 on the function running in FRAME. */
1246 print_frame_local_vars (fi
, num_tabs
, stream
)
1247 register struct frame_info
*fi
;
1248 register int num_tabs
;
1249 register GDB_FILE
*stream
;
1251 register struct block
*block
= get_frame_block (fi
);
1252 register int values_printed
= 0;
1256 fprintf_filtered (stream
, "No symbol table info available.\n");
1262 if (print_block_frame_locals (block
, fi
, num_tabs
, stream
))
1264 /* After handling the function's top-level block, stop.
1265 Don't continue to its superblock, the block of
1266 per-file symbols. */
1267 if (BLOCK_FUNCTION (block
))
1269 block
= BLOCK_SUPERBLOCK (block
);
1272 if (!values_printed
)
1274 fprintf_filtered (stream
, "No locals.\n");
1278 /* Same, but print labels. */
1281 print_frame_label_vars (fi
, this_level_only
, stream
)
1282 register struct frame_info
*fi
;
1283 int this_level_only
;
1284 register GDB_FILE
*stream
;
1286 register struct blockvector
*bl
;
1287 register struct block
*block
= get_frame_block (fi
);
1288 register int values_printed
= 0;
1289 int index
, have_default
= 0;
1290 char *blocks_printed
;
1291 CORE_ADDR pc
= fi
->pc
;
1295 fprintf_filtered (stream
, "No symbol table info available.\n");
1299 bl
= blockvector_for_pc (BLOCK_END (block
) - 4, &index
);
1300 blocks_printed
= (char *) alloca (BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
1301 memset (blocks_printed
, 0, BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
1305 CORE_ADDR end
= BLOCK_END (block
) - 4;
1308 if (bl
!= blockvector_for_pc (end
, &index
))
1309 error ("blockvector blotch");
1310 if (BLOCKVECTOR_BLOCK (bl
, index
) != block
)
1311 error ("blockvector botch");
1312 last_index
= BLOCKVECTOR_NBLOCKS (bl
);
1315 /* Don't print out blocks that have gone by. */
1316 while (index
< last_index
1317 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < pc
)
1320 while (index
< last_index
1321 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < end
)
1323 if (blocks_printed
[index
] == 0)
1325 if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl
, index
), &have_default
, stream
))
1327 blocks_printed
[index
] = 1;
1333 if (values_printed
&& this_level_only
)
1336 /* After handling the function's top-level block, stop.
1337 Don't continue to its superblock, the block of
1338 per-file symbols. */
1339 if (BLOCK_FUNCTION (block
))
1341 block
= BLOCK_SUPERBLOCK (block
);
1344 if (!values_printed
&& !this_level_only
)
1346 fprintf_filtered (stream
, "No catches.\n");
1352 locals_info (args
, from_tty
)
1356 if (!selected_frame
)
1357 error ("No frame selected.");
1358 print_frame_local_vars (selected_frame
, 0, gdb_stdout
);
1362 catch_info (ignore
, from_tty
)
1366 struct symtab_and_line
* sal
;
1368 /* Check for target support for exception handling */
1369 sal
= target_enable_exception_callback (EX_EVENT_CATCH
, 1);
1372 /* Currently not handling this */
1373 /* Ideally, here we should interact with the C++ runtime
1374 system to find the list of active handlers, etc. */
1375 fprintf_filtered (gdb_stdout
, "Info catch not supported with this target/compiler combination.\n");
1377 if (!selected_frame
)
1378 error ("No frame selected.");
1383 /* Assume g++ compiled code -- old v 4.16 behaviour */
1384 if (!selected_frame
)
1385 error ("No frame selected.");
1387 print_frame_label_vars (selected_frame
, 0, gdb_stdout
);
1392 print_frame_arg_vars (fi
, stream
)
1393 register struct frame_info
*fi
;
1394 register GDB_FILE
*stream
;
1396 struct symbol
*func
= get_frame_function (fi
);
1397 register struct block
*b
;
1400 register struct symbol
*sym
, *sym2
;
1401 register int values_printed
= 0;
1405 fprintf_filtered (stream
, "No symbol table info available.\n");
1409 b
= SYMBOL_BLOCK_VALUE (func
);
1410 nsyms
= BLOCK_NSYMS (b
);
1412 for (i
= 0; i
< nsyms
; i
++)
1414 sym
= BLOCK_SYM (b
, i
);
1415 switch (SYMBOL_CLASS (sym
))
1421 case LOC_REGPARM_ADDR
:
1422 case LOC_BASEREG_ARG
:
1424 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1425 fputs_filtered (" = ", stream
);
1427 /* We have to look up the symbol because arguments can have
1428 two entries (one a parameter, one a local) and the one we
1429 want is the local, which lookup_symbol will find for us.
1430 This includes gcc1 (not gcc2) on the sparc when passing a
1431 small structure and gcc2 when the argument type is float
1432 and it is passed as a double and converted to float by
1433 the prologue (in the latter case the type of the LOC_ARG
1434 symbol is double and the type of the LOC_LOCAL symbol is
1435 float). There are also LOC_ARG/LOC_REGISTER pairs which
1436 are not combined in symbol-reading. */
1438 sym2
= lookup_symbol (SYMBOL_NAME (sym
),
1439 b
, VAR_NAMESPACE
, (int *)NULL
, (struct symtab
**)NULL
);
1440 print_variable_value (sym2
, fi
, stream
);
1441 fprintf_filtered (stream
, "\n");
1445 /* Don't worry about things which aren't arguments. */
1450 if (!values_printed
)
1452 fprintf_filtered (stream
, "No arguments.\n");
1457 args_info (ignore
, from_tty
)
1461 if (!selected_frame
)
1462 error ("No frame selected.");
1463 print_frame_arg_vars (selected_frame
, gdb_stdout
);
1468 args_plus_locals_info (ignore
, from_tty
)
1472 args_info(ignore
, from_tty
);
1473 locals_info(ignore
, from_tty
);
1477 /* Select frame FI, and note that its stack level is LEVEL.
1478 LEVEL may be -1 if an actual level number is not known. */
1481 select_frame (fi
, level
)
1482 struct frame_info
*fi
;
1485 register struct symtab
*s
;
1487 selected_frame
= fi
;
1488 selected_frame_level
= level
;
1489 if (selected_frame_level_changed_hook
)
1490 selected_frame_level_changed_hook (level
);
1492 /* Ensure that symbols for this frame are read in. Also, determine the
1493 source language of this frame, and switch to it if desired. */
1496 s
= find_pc_symtab (fi
->pc
);
1498 && s
->language
!= current_language
->la_language
1499 && s
->language
!= language_unknown
1500 && language_mode
== language_mode_auto
) {
1501 set_language(s
->language
);
1503 /* elz: this if here fixes the problem with the pc not being displayed
1504 in the tui asm layout, with no debug symbols. The value of s
1505 would be 0 here, and select_source_symtab would abort the
1506 command by calling the 'error' function*/
1509 TUIDO(((TuiOpaqueFuncPtr
)tui_vSelectSourceSymtab
, s
));
1515 /* Select frame FI, noting that its stack level is LEVEL. Also print
1516 the stack frame and show the source if this is the tui version. */
1518 select_and_print_frame(fi
, level
)
1519 struct frame_info
*fi
;
1522 select_frame(fi
, level
);
1525 print_stack_frame(fi
, level
, 1);
1526 TUIDO(((TuiOpaqueFuncPtr
)tui_vCheckDataValues
, fi
));
1531 /* Select frame FI, noting that its stack level is LEVEL. Be silent if
1535 select_and_maybe_print_frame (fi
, level
)
1536 struct frame_info
*fi
;
1540 select_frame(fi
, level
);
1542 select_and_print_frame(fi
, level
);
1547 /* Store the selected frame and its level into *FRAMEP and *LEVELP.
1548 If there is no selected frame, *FRAMEP is set to NULL. */
1551 record_selected_frame (frameaddrp
, levelp
)
1552 CORE_ADDR
*frameaddrp
;
1555 *frameaddrp
= selected_frame
? selected_frame
->frame
: 0;
1556 *levelp
= selected_frame_level
;
1559 /* Return the symbol-block in which the selected frame is executing.
1560 Can return zero under various legitimate circumstances. */
1563 get_selected_block ()
1565 if (!target_has_stack
)
1568 if (!selected_frame
)
1569 return get_current_block ();
1570 return get_frame_block (selected_frame
);
1573 /* Find a frame a certain number of levels away from FRAME.
1574 LEVEL_OFFSET_PTR points to an int containing the number of levels.
1575 Positive means go to earlier frames (up); negative, the reverse.
1576 The int that contains the number of levels is counted toward
1577 zero as the frames for those levels are found.
1578 If the top or bottom frame is reached, that frame is returned,
1579 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
1580 how much farther the original request asked to go. */
1583 find_relative_frame (frame
, level_offset_ptr
)
1584 register struct frame_info
*frame
;
1585 register int *level_offset_ptr
;
1587 register struct frame_info
*prev
;
1588 register struct frame_info
*frame1
;
1590 /* Going up is simple: just do get_prev_frame enough times
1591 or until initial frame is reached. */
1592 while (*level_offset_ptr
> 0)
1594 prev
= get_prev_frame (frame
);
1597 (*level_offset_ptr
)--;
1600 /* Going down is just as simple. */
1601 if (*level_offset_ptr
< 0)
1603 while (*level_offset_ptr
< 0) {
1604 frame1
= get_next_frame (frame
);
1608 (*level_offset_ptr
)++;
1614 /* The "select_frame" command. With no arg, NOP.
1615 With arg LEVEL_EXP, select the frame at level LEVEL if it is a
1616 valid level. Otherwise, treat level_exp as an address expression
1617 and select it. See parse_frame_specification for more info on proper
1618 frame expressions. */
1622 select_frame_command (level_exp
, from_tty
)
1626 register struct frame_info
*frame
, *frame1
;
1627 unsigned int level
= 0;
1629 if (!target_has_stack
)
1630 error ("No stack.");
1632 frame
= parse_frame_specification (level_exp
);
1634 /* Try to figure out what level this frame is. But if there is
1635 no current stack, don't error out -- let the user set one. */
1637 if (get_current_frame()) {
1638 for (frame1
= get_prev_frame (0);
1639 frame1
&& frame1
!= frame
;
1640 frame1
= get_prev_frame (frame1
))
1647 select_frame (frame
, level
);
1650 /* The "frame" command. With no arg, print selected frame briefly.
1651 With arg, behaves like select_frame and then prints the selected
1655 frame_command (level_exp
, from_tty
)
1659 select_frame_command (level_exp
, from_tty
);
1660 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1663 /* The XDB Compatibility command to print the current frame. */
1666 current_frame_command (level_exp
, from_tty
)
1670 if (target_has_stack
== 0 || selected_frame
== 0)
1671 error ("No stack.");
1672 print_only_stack_frame (selected_frame
, selected_frame_level
, 1);
1675 /* Select the frame up one or COUNT stack levels
1676 from the previously selected frame, and print it briefly. */
1680 up_silently_base (count_exp
)
1683 register struct frame_info
*fi
;
1684 int count
= 1, count1
;
1686 count
= parse_and_eval_address (count_exp
);
1689 if (target_has_stack
== 0 || selected_frame
== 0)
1690 error ("No stack.");
1692 fi
= find_relative_frame (selected_frame
, &count1
);
1693 if (count1
!= 0 && count_exp
== 0)
1694 error ("Initial frame selected; you cannot go up.");
1695 select_frame (fi
, selected_frame_level
+ count
- count1
);
1699 up_silently_command (count_exp
, from_tty
)
1703 up_silently_base(count_exp
);
1705 print_stack_frame (selected_frame
, selected_frame_level
, 1);
1709 up_command (count_exp
, from_tty
)
1713 up_silently_base (count_exp
);
1714 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1717 /* Select the frame down one or COUNT stack levels
1718 from the previously selected frame, and print it briefly. */
1722 down_silently_base (count_exp
)
1725 register struct frame_info
*frame
;
1726 int count
= -1, count1
;
1728 count
= - parse_and_eval_address (count_exp
);
1731 if (target_has_stack
== 0 || selected_frame
== 0)
1732 error ("No stack.");
1734 frame
= find_relative_frame (selected_frame
, &count1
);
1735 if (count1
!= 0 && count_exp
== 0)
1738 /* We only do this if count_exp is not specified. That way "down"
1739 means to really go down (and let me know if that is
1740 impossible), but "down 9999" can be used to mean go all the way
1741 down without getting an error. */
1743 error ("Bottom (i.e., innermost) frame selected; you cannot go down.");
1746 select_frame (frame
, selected_frame_level
+ count
- count1
);
1751 down_silently_command (count_exp
, from_tty
)
1755 down_silently_base (count_exp
);
1757 print_stack_frame (selected_frame
, selected_frame_level
, 1);
1761 down_command (count_exp
, from_tty
)
1765 down_silently_base (count_exp
);
1766 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1770 return_command (retval_exp
, from_tty
)
1774 struct symbol
*thisfun
;
1775 CORE_ADDR selected_frame_addr
;
1776 CORE_ADDR selected_frame_pc
;
1777 struct frame_info
*frame
;
1778 value_ptr return_value
= NULL
;
1780 if (selected_frame
== NULL
)
1781 error ("No selected frame.");
1782 thisfun
= get_frame_function (selected_frame
);
1783 selected_frame_addr
= FRAME_FP (selected_frame
);
1784 selected_frame_pc
= selected_frame
->pc
;
1786 /* Compute the return value (if any -- possibly getting errors here). */
1790 struct type
*return_type
= NULL
;
1792 return_value
= parse_and_eval (retval_exp
);
1794 /* Cast return value to the return type of the function. */
1795 if (thisfun
!= NULL
)
1796 return_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun
));
1797 if (return_type
== NULL
)
1798 return_type
= builtin_type_int
;
1799 return_value
= value_cast (return_type
, return_value
);
1801 /* Make sure we have fully evaluated it, since
1802 it might live in the stack frame we're about to pop. */
1803 if (VALUE_LAZY (return_value
))
1804 value_fetch_lazy (return_value
);
1807 /* If interactive, require confirmation. */
1813 if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun
)))
1815 error ("Not confirmed.");
1820 if (!query ("Make selected stack frame return now? "))
1821 error ("Not confirmed.");
1824 /* Do the real work. Pop until the specified frame is current. We
1825 use this method because the selected_frame is not valid after
1826 a POP_FRAME. The pc comparison makes this work even if the
1827 selected frame shares its fp with another frame. */
1829 while (selected_frame_addr
!= (frame
= get_current_frame())->frame
1830 || selected_frame_pc
!= frame
->pc
)
1833 /* Then pop that frame. */
1837 /* Compute the return value (if any) and store in the place
1838 for return values. */
1841 set_return_value (return_value
);
1843 /* If interactive, print the frame that is now current. */
1846 frame_command ("0", 1);
1848 select_frame_command ("0", 0);
1851 /* Sets the scope to input function name, provided that the
1852 function is within the current stack frame */
1854 struct function_bounds
1856 CORE_ADDR low
, high
;
1859 static void func_command
PARAMS ((char *arg
, int from_tty
));
1861 func_command (arg
, from_tty
)
1865 struct frame_info
*fp
;
1867 struct symtabs_and_lines sals
;
1870 struct function_bounds
*func_bounds
= (struct function_bounds
*) NULL
;
1872 if (arg
!= (char *) NULL
)
1875 fp
= parse_frame_specification ("0");
1876 sals
= decode_line_spec (arg
, 1);
1877 func_bounds
= (struct function_bounds
*) xmalloc (
1878 sizeof (struct function_bounds
) * sals
.nelts
);
1879 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
1881 if (sals
.sals
[i
].pc
== (CORE_ADDR
) 0 ||
1882 find_pc_partial_function (sals
.sals
[i
].pc
,
1884 &func_bounds
[i
].low
,
1885 &func_bounds
[i
].high
) == 0)
1887 func_bounds
[i
].low
=
1888 func_bounds
[i
].high
= (CORE_ADDR
) NULL
;
1894 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
1895 found
= (fp
->pc
>= func_bounds
[i
].low
&&
1896 fp
->pc
< func_bounds
[i
].high
);
1900 fp
= find_relative_frame (fp
, &level
);
1903 while (!found
&& level
== 0);
1909 printf_filtered ("'%s' not within current stack frame.\n", arg
);
1910 else if (fp
!= selected_frame
)
1911 select_and_print_frame (fp
, level
);
1914 /* Gets the language of the current frame. */
1917 get_frame_language ()
1919 register struct symtab
*s
;
1920 enum language flang
; /* The language of the current frame */
1924 s
= find_pc_symtab(selected_frame
->pc
);
1926 flang
= s
->language
;
1928 flang
= language_unknown
;
1931 flang
= language_unknown
;
1937 _initialize_stack ()
1940 backtrace_limit
= 30;
1943 add_com ("return", class_stack
, return_command
,
1944 "Make selected stack frame return to its caller.\n\
1945 Control remains in the debugger, but when you continue\n\
1946 execution will resume in the frame above the one now selected.\n\
1947 If an argument is given, it is an expression for the value to return.");
1949 add_com ("up", class_stack
, up_command
,
1950 "Select and print stack frame that called this one.\n\
1951 An argument says how many frames up to go.");
1952 add_com ("up-silently", class_support
, up_silently_command
,
1953 "Same as the `up' command, but does not print anything.\n\
1954 This is useful in command scripts.");
1956 add_com ("down", class_stack
, down_command
,
1957 "Select and print stack frame called by this one.\n\
1958 An argument says how many frames down to go.");
1959 add_com_alias ("do", "down", class_stack
, 1);
1960 add_com_alias ("dow", "down", class_stack
, 1);
1961 add_com ("down-silently", class_support
, down_silently_command
,
1962 "Same as the `down' command, but does not print anything.\n\
1963 This is useful in command scripts.");
1965 add_com ("frame", class_stack
, frame_command
,
1966 "Select and print a stack frame.\n\
1967 With no argument, print the selected stack frame. (See also \"info frame\").\n\
1968 An argument specifies the frame to select.\n\
1969 It can be a stack frame number or the address of the frame.\n\
1970 With argument, nothing is printed if input is coming from\n\
1971 a command file or a user-defined command.");
1973 add_com_alias ("f", "frame", class_stack
, 1);
1977 add_com("L", class_stack
, current_frame_command
,
1978 "Print the current stack frame.\n");
1979 add_com_alias ("V", "frame", class_stack
, 1);
1981 add_com ("select-frame", class_stack
, select_frame_command
,
1982 "Select a stack frame without printing anything.\n\
1983 An argument specifies the frame to select.\n\
1984 It can be a stack frame number or the address of the frame.\n");
1986 add_com ("backtrace", class_stack
, backtrace_command
,
1987 "Print backtrace of all stack frames, or innermost COUNT frames.\n\
1988 With a negative argument, print outermost -COUNT frames.\n\
1989 Use of the 'full' qualifier also prints the values of the local variables.\n");
1990 add_com_alias ("bt", "backtrace", class_stack
, 0);
1993 add_com_alias ("t", "backtrace", class_stack
, 0);
1994 add_com ("T", class_stack
, backtrace_full_command
,
1995 "Print backtrace of all stack frames, or innermost COUNT frames \n\
1996 and the values of the local variables.\n\
1997 With a negative argument, print outermost -COUNT frames.\n\
1998 Usage: T <count>\n");
2001 add_com_alias ("where", "backtrace", class_alias
, 0);
2002 add_info ("stack", backtrace_command
,
2003 "Backtrace of the stack, or innermost COUNT frames.");
2004 add_info_alias ("s", "stack", 1);
2005 add_info ("frame", frame_info
,
2006 "All about selected stack frame, or frame at ADDR.");
2007 add_info_alias ("f", "frame", 1);
2008 add_info ("locals", locals_info
,
2009 "Local variables of current stack frame.");
2010 add_info ("args", args_info
,
2011 "Argument variables of current stack frame.");
2013 add_com("l", class_info
, args_plus_locals_info
,
2014 "Argument and local variables of current stack frame.");
2017 add_com("func", class_stack
, func_command
,
2018 "Select the stack frame that contains <func>.\nUsage: func <name>\n");
2020 add_info ("catch", catch_info
,
2021 "Exceptions that can be caught in the current stack frame.");
2024 add_cmd ("backtrace-limit", class_stack
, set_backtrace_limit_command
,
2025 "Specify maximum number of frames for \"backtrace\" to print by default.",
2027 add_info ("backtrace-limit", backtrace_limit_info
,
2028 "The maximum number of frames for \"backtrace\" to print by default.");