1 /* Print and select stack frames for GDB, the GNU debugger.
2 Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 1998
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 defined).
171 /* Pass the args the way catch_errors wants them. */
173 print_stack_frame_base_stub (args
)
176 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*)args
;
178 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
182 /* print the frame arguments to the terminal.
183 Pass the args the way catch_errors wants them. */
185 print_only_stack_frame_stub (args
)
188 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*)args
;
190 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
194 /* Print a stack frame briefly. FRAME_INFI should be the frame info
195 and LEVEL should be its level in the stack (or -1 for level not defined).
196 This prints the level, the function executing, the arguments,
197 and the file name and line number.
198 If the pc is not at the beginning of the source line,
199 the actual pc is printed at the beginning.
201 If SOURCE is 1, print the source line as well.
202 If SOURCE is -1, print ONLY the source line. */
205 print_stack_frame_base (fi
, level
, source
)
206 struct frame_info
*fi
;
210 struct print_stack_frame_args args
;
214 args
.source
= source
;
217 catch_errors (print_stack_frame_stub
, (char *)&args
, "", RETURN_MASK_ALL
);
220 /* Show and print a stack frame briefly. FRAME_INFI should be the frame info
221 and LEVEL should be its level in the stack (or -1 for level not defined).
222 This prints the level, the function executing, the arguments,
223 and the file name and line number.
224 If the pc is not at the beginning of the source line,
225 the actual pc is printed at the beginning.
227 If SOURCE is 1, print the source line as well.
228 If SOURCE is -1, print ONLY the source line. */
231 show_and_print_stack_frame (fi
, level
, source
)
232 struct frame_info
*fi
;
236 struct print_stack_frame_args args
;
240 args
.source
= source
;
243 catch_errors (show_and_print_stack_frame_stub
, (char *)&args
, "", RETURN_MASK_ALL
);
247 /* Show or print a stack frame briefly. FRAME_INFI should be the frame info
248 and LEVEL should be its level in the stack (or -1 for level not defined).
249 This prints the level, the function executing, the arguments,
250 and the file name and line number.
251 If the pc is not at the beginning of the source line,
252 the actual pc is printed at the beginning.
254 If SOURCE is 1, print the source line as well.
255 If SOURCE is -1, print ONLY the source line. */
258 print_stack_frame (fi
, level
, source
)
259 struct frame_info
*fi
;
263 struct print_stack_frame_args args
;
267 args
.source
= source
;
270 catch_errors (print_stack_frame_stub
, (char *)&args
, "", RETURN_MASK_ALL
);
273 /* Print a stack frame briefly. FRAME_INFI should be the frame info
274 and LEVEL should be its level in the stack (or -1 for level not defined).
275 This prints the level, the function executing, the arguments,
276 and the file name and line number.
277 If the pc is not at the beginning of the source line,
278 the actual pc is printed at the beginning.
280 If SOURCE is 1, print the source line as well.
281 If SOURCE is -1, print ONLY the source line. */
284 print_only_stack_frame (fi
, level
, source
)
285 struct frame_info
*fi
;
289 struct print_stack_frame_args args
;
293 args
.source
= source
;
296 catch_errors (print_only_stack_frame_stub
,
297 (char *)&args
, "", RETURN_MASK_ALL
);
300 struct print_args_args
{
302 struct frame_info
*fi
;
305 static int print_args_stub
PARAMS ((char *));
307 /* Pass the args the way catch_errors wants them. */
310 print_args_stub (args
)
314 struct print_args_args
*p
= (struct print_args_args
*)args
;
316 FRAME_NUM_ARGS (numargs
, (p
->fi
));
317 print_frame_args (p
->func
, p
->fi
, numargs
, gdb_stdout
);
321 /* Print information about a frame for frame "fi" at level "level".
322 * Used in "where" output, also used to emit breakpoint or step messages.
323 * LEVEL is the level of the frame, or -1 if it is the innermost frame
324 * but we don't want to print the level.
325 * The meaning of the SOURCE argument is:
326 * -1: Print only source line
327 * 0: Print only location
328 * 1: Print location and source line
332 print_frame_info_base (fi
, level
, source
, args
)
333 struct frame_info
*fi
;
338 struct symtab_and_line sal
;
340 register char *funname
= 0;
341 enum language funlang
= language_unknown
;
344 char buf
[MAX_REGISTER_RAW_SIZE
];
347 /* On the 68k, this spends too much time in m68k_find_saved_regs. */
349 /* Get the value of SP_REGNUM relative to the frame. */
350 get_saved_register (buf
, (int *)NULL
, (CORE_ADDR
*)NULL
,
351 FRAME_INFO_ID (fi
), SP_REGNUM
, (enum lval_type
*)NULL
);
352 sp
= extract_address (buf
, REGISTER_RAW_SIZE (SP_REGNUM
));
354 /* This is not a perfect test, because if a function alloca's some
355 memory, puts some code there, and then jumps into it, then the test
356 will succeed even though there is no call dummy. Probably best is
357 to check for a bp_call_dummy breakpoint. */
358 if (PC_IN_CALL_DUMMY (fi
->pc
, sp
, fi
->frame
))
360 if (frame_in_dummy (fi
))
363 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
365 /* Do this regardless of SOURCE because we don't have any source
366 to list for this frame. */
368 printf_filtered ("#%-2d ", level
);
369 annotate_function_call ();
370 printf_filtered ("<function called from gdb>\n");
371 annotate_frame_end ();
374 if (fi
->signal_handler_caller
)
376 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
378 /* Do this regardless of SOURCE because we don't have any source
379 to list for this frame. */
381 printf_filtered ("#%-2d ", level
);
382 annotate_signal_handler_caller ();
383 printf_filtered ("<signal handler called>\n");
384 annotate_frame_end ();
388 /* If fi is not the innermost frame, that normally means that fi->pc
389 points to *after* the call instruction, and we want to get the line
390 containing the call, never the next line. But if the next frame is
391 a signal_handler_caller or a dummy frame, then the next frame was
392 not entered as the result of a call, and we want to get the line
393 containing fi->pc. */
395 find_pc_line (fi
->pc
,
397 && !fi
->next
->signal_handler_caller
398 && !frame_in_dummy (fi
->next
));
400 func
= find_pc_function (fi
->pc
);
403 /* In certain pathological cases, the symtabs give the wrong
404 function (when we are in the first function in a file which
405 is compiled without debugging symbols, the previous function
406 is compiled with debugging symbols, and the "foo.o" symbol
407 that is supposed to tell us where the file with debugging symbols
408 ends has been truncated by ar because it is longer than 15
409 characters). This also occurs if the user uses asm() to create
410 a function but not stabs for it (in a file compiled -g).
412 So look in the minimal symbol tables as well, and if it comes
413 up with a larger address for the function use that instead.
414 I don't think this can ever cause any problems; there shouldn't
415 be any minimal symbols in the middle of a function; if this is
416 ever changed many parts of GDB will need to be changed (and we'll
417 create a find_pc_minimal_function or some such). */
419 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
421 && (SYMBOL_VALUE_ADDRESS (msymbol
)
422 > BLOCK_START (SYMBOL_BLOCK_VALUE (func
))))
425 /* There is no particular reason to think the line number
426 information is wrong. Someone might have just put in
427 a label with asm() but left the line numbers alone. */
428 /* In this case we have no way of knowing the source file
429 and line number, so don't print them. */
432 /* We also don't know anything about the function besides
433 its address and name. */
435 funname
= SYMBOL_NAME (msymbol
);
436 funlang
= SYMBOL_LANGUAGE (msymbol
);
440 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
441 * the demangled name that we already have stored in
442 * the symbol table, but we stored a version with
443 * DMGL_PARAMS turned on, and here we don't want
444 * to display parameters. So call the demangler again,
445 * with DMGL_ANSI only. RT
446 * (Yes, I know that printf_symbol_filtered() will
447 * again try to demangle the name on the fly, but
448 * the issue is that if cplus_demangle() fails here,
449 * it'll fail there too. So we want to catch the failure
450 * ("demangled==NULL" case below) here, while we still
451 * have our hands on the function symbol.)
454 funname
= SYMBOL_NAME (func
);
455 funlang
= SYMBOL_LANGUAGE (func
);
456 if (funlang
== language_cplus
) {
457 demangled
= cplus_demangle (funname
, DMGL_ANSI
);
458 if (demangled
== NULL
)
459 /* If the demangler fails, try the demangled name
460 * from the symbol table. This'll have parameters,
461 * but that's preferable to diplaying a mangled name.
463 funname
= SYMBOL_SOURCE_NAME (func
);
469 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
472 funname
= SYMBOL_NAME (msymbol
);
473 funlang
= SYMBOL_LANGUAGE (msymbol
);
477 if (source
>= 0 || !sal
.symtab
)
479 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
482 printf_filtered ("#%-2d ", level
);
484 if (fi
->pc
!= sal
.pc
|| !sal
.symtab
)
486 annotate_frame_address ();
487 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
488 annotate_frame_address_end ();
489 printf_filtered (" in ");
491 annotate_frame_function_name ();
492 fprintf_symbol_filtered (gdb_stdout
, funname
? funname
: "??", funlang
,
495 annotate_frame_args ();
496 fputs_filtered (" (", gdb_stdout
);
499 struct print_args_args args
;
502 catch_errors (print_args_stub
, (char *)&args
, "", RETURN_MASK_ALL
);
505 printf_filtered (")");
506 if (sal
.symtab
&& sal
.symtab
->filename
)
508 annotate_frame_source_begin ();
510 printf_filtered (" at ");
511 annotate_frame_source_file ();
512 printf_filtered ("%s", sal
.symtab
->filename
);
513 annotate_frame_source_file_end ();
514 printf_filtered (":");
515 annotate_frame_source_line ();
516 printf_filtered ("%d", sal
.line
);
517 annotate_frame_source_end ();
520 #ifdef PC_LOAD_SEGMENT
521 /* If we couldn't print out function name but if can figure out what
522 load segment this pc value is from, at least print out some info
523 about its load segment. */
526 annotate_frame_where ();
528 printf_filtered (" from %s", PC_LOAD_SEGMENT (fi
->pc
));
532 if (!funname
|| (!sal
.symtab
|| !sal
.symtab
->filename
))
534 char *lib
= PC_SOLIB (fi
->pc
);
537 annotate_frame_where ();
539 printf_filtered (" from %s", lib
);
543 printf_filtered ("\n");
546 if ((source
!= 0) && sal
.symtab
)
549 int mid_statement
= source
< 0 && fi
->pc
!= sal
.pc
;
550 if (annotation_level
)
551 done
= identify_source_line (sal
.symtab
, sal
.line
, mid_statement
,
555 if (addressprint
&& mid_statement
&& !tui_version
)
557 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
558 printf_filtered ("\t");
560 if (print_frame_info_listing_hook
)
561 print_frame_info_listing_hook (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
562 else if (!tui_version
)
563 print_source_lines (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
565 current_source_line
= max (sal
.line
- lines_to_list
/2, 1);
568 set_default_breakpoint (1, fi
->pc
, sal
.symtab
, sal
.line
);
570 annotate_frame_end ();
572 gdb_flush (gdb_stdout
);
577 stack_publish_stopped_with_no_frame()
579 TUIDO(((TuiOpaqueFuncPtr
)tuiUpdateOnEnd
));
584 /* Show or print the frame info. If this is the tui, it will be shown in
585 the source display */
587 print_frame_info(fi
, level
, source
, args
)
588 struct frame_info
*fi
;
594 print_frame_info_base(fi
, level
, source
, args
);
597 if (fi
&& (frame_in_dummy(fi
) || fi
->signal_handler_caller
))
598 print_frame_info_base(fi
, level
, source
, args
);
601 TUIDO(((TuiOpaqueFuncPtr
)tui_vShowFrameInfo
, fi
));
606 /* Show the frame info. If this is the tui, it will be shown in
607 the source display otherwise, nothing is done */
610 struct frame_info
*fi
;
612 TUIDO(((TuiOpaqueFuncPtr
)tui_vShowFrameInfo
, fi
));
616 /* Read a frame specification in whatever the appropriate format is.
617 Call error() if the specification is in any way invalid (i.e.
618 this function never returns NULL). */
621 parse_frame_specification (frame_exp
)
626 CORE_ADDR args
[MAXARGS
];
630 char *addr_string
, *p
;
631 struct cleanup
*tmp_cleanup
;
633 while (*frame_exp
== ' ') frame_exp
++;
637 if (numargs
> MAXARGS
)
638 error ("Too many args in frame specification");
639 /* Parse an argument. */
640 for (p
= frame_exp
; *p
&& *p
!= ' '; p
++)
642 addr_string
= savestring(frame_exp
, p
- frame_exp
);
645 tmp_cleanup
= make_cleanup (free
, addr_string
);
646 args
[numargs
++] = parse_and_eval_address (addr_string
);
647 do_cleanups (tmp_cleanup
);
650 /* Skip spaces, move to possible next arg. */
651 while (*p
== ' ') p
++;
659 if (selected_frame
== NULL
)
660 error ("No selected frame.");
661 return selected_frame
;
666 struct frame_info
*fid
=
667 find_relative_frame (get_current_frame (), &level
);
668 struct frame_info
*tfid
;
671 /* find_relative_frame was successful */
674 /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications
675 take at least 2 addresses. It is important to detect this case
676 here so that "frame 100" does not give a confusing error message
677 like "frame specification requires two addresses". This of course
678 does not solve the "frame 100" problem for machines on which
679 a frame specification can be made with one address. To solve
680 that, we need a new syntax for a specifying a frame by address.
681 I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for
682 two args, etc.), but people might think that is too much typing,
683 so I guess *0x23,0x45 would be a possible alternative (commas
684 really should be used instead of spaces to delimit; using spaces
685 normally works in an expression). */
686 #ifdef SETUP_ARBITRARY_FRAME
687 error ("No frame %d", args
[0]);
690 /* If (s)he specifies the frame with an address, he deserves what
691 (s)he gets. Still, give the highest one that matches. */
693 for (fid
= get_current_frame ();
694 fid
&& fid
->frame
!= args
[0];
695 fid
= get_prev_frame (fid
))
699 while ((tfid
= get_prev_frame (fid
)) &&
700 (tfid
->frame
== args
[0]))
703 /* We couldn't identify the frame as an existing frame, but
704 perhaps we can create one with a single argument. */
708 #ifdef SETUP_ARBITRARY_FRAME
709 return SETUP_ARBITRARY_FRAME (numargs
, args
);
711 /* Usual case. Do it here rather than have everyone supply
712 a SETUP_ARBITRARY_FRAME that does this. */
714 return create_new_frame (args
[0], 0);
715 error ("Too many args in frame specification");
722 /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except
723 that if it is unsure about the answer, it returns 0
724 instead of guessing (this happens on the VAX and i960, for example).
726 On most machines, we never have to guess about the args address,
727 so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */
728 #if !defined (FRAME_ARGS_ADDRESS_CORRECT)
729 #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS
732 /* Print verbosely the selected frame or the frame at address ADDR.
733 This means absolutely all information in the frame is printed. */
736 frame_info (addr_exp
, from_tty
)
740 struct frame_info
*fi
;
741 struct symtab_and_line sal
;
744 struct frame_info
*calling_frame_info
;
745 int i
, count
, numregs
;
747 enum language funlang
= language_unknown
;
749 if (!target_has_stack
)
752 fi
= parse_frame_specification (addr_exp
);
754 error ("Invalid frame specified.");
756 sal
= find_pc_line (fi
->pc
,
758 && !fi
->next
->signal_handler_caller
759 && !frame_in_dummy (fi
->next
));
760 func
= get_frame_function (fi
);
761 s
= find_pc_symtab(fi
->pc
);
764 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
765 * the demangled name that we already have stored in
766 * the symbol table, but we stored a version with
767 * DMGL_PARAMS turned on, and here we don't want
768 * to display parameters. So call the demangler again,
769 * with DMGL_ANSI only. RT
770 * (Yes, I know that printf_symbol_filtered() will
771 * again try to demangle the name on the fly, but
772 * the issue is that if cplus_demangle() fails here,
773 * it'll fail there too. So we want to catch the failure
774 * ("demangled==NULL" case below) here, while we still
775 * have our hands on the function symbol.)
778 funname
= SYMBOL_NAME (func
);
779 funlang
= SYMBOL_LANGUAGE (func
);
780 if (funlang
== language_cplus
)
782 demangled
= cplus_demangle (funname
, DMGL_ANSI
);
783 /* If the demangler fails, try the demangled name
784 * from the symbol table. This'll have parameters,
785 * but that's preferable to diplaying a mangled name.
787 if (demangled
== NULL
)
788 funname
= SYMBOL_SOURCE_NAME (func
);
793 register struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
796 funname
= SYMBOL_NAME (msymbol
);
797 funlang
= SYMBOL_LANGUAGE (msymbol
);
800 calling_frame_info
= get_prev_frame (fi
);
802 if (!addr_exp
&& selected_frame_level
>= 0)
804 printf_filtered ("Stack level %d, frame at ", selected_frame_level
);
805 print_address_numeric (fi
->frame
, 1, gdb_stdout
);
806 printf_filtered (":\n");
810 printf_filtered ("Stack frame at ");
811 print_address_numeric (fi
->frame
, 1, gdb_stdout
);
812 printf_filtered (":\n");
814 printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM
));
815 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
820 printf_filtered (" in ");
821 fprintf_symbol_filtered (gdb_stdout
, funname
, funlang
,
822 DMGL_ANSI
| DMGL_PARAMS
);
826 printf_filtered (" (%s:%d)", sal
.symtab
->filename
, sal
.line
);
827 puts_filtered ("; ");
829 printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM
));
830 print_address_numeric (FRAME_SAVED_PC (fi
), 1, gdb_stdout
);
831 printf_filtered ("\n");
835 #ifdef FRAMELESS_FUNCTION_INVOCATION
836 FRAMELESS_FUNCTION_INVOCATION (fi
, frameless
);
839 printf_filtered (" (FRAMELESS),");
842 if (calling_frame_info
)
844 printf_filtered (" called by frame at ");
845 print_address_numeric (calling_frame_info
->frame
, 1, gdb_stdout
);
847 if (fi
->next
&& calling_frame_info
)
852 printf_filtered (" caller of frame at ");
853 print_address_numeric (fi
->next
->frame
, 1, gdb_stdout
);
855 if (fi
->next
|| calling_frame_info
)
856 puts_filtered ("\n");
858 printf_filtered (" source language %s.\n", language_str (s
->language
));
860 #ifdef PRINT_EXTRA_FRAME_INFO
861 PRINT_EXTRA_FRAME_INFO (fi
);
865 /* Address of the argument list for this frame, or 0. */
866 CORE_ADDR arg_list
= FRAME_ARGS_ADDRESS_CORRECT (fi
);
867 /* Number of args for this frame, or -1 if unknown. */
871 printf_filtered (" Arglist at unknown address.\n");
874 printf_filtered (" Arglist at ");
875 print_address_numeric (arg_list
, 1, gdb_stdout
);
876 printf_filtered (",");
878 FRAME_NUM_ARGS (numargs
, fi
);
880 puts_filtered (" args: ");
881 else if (numargs
== 0)
882 puts_filtered (" no args.");
883 else if (numargs
== 1)
884 puts_filtered (" 1 arg: ");
886 printf_filtered (" %d args: ", numargs
);
887 print_frame_args (func
, fi
, numargs
, gdb_stdout
);
888 puts_filtered ("\n");
892 /* Address of the local variables for this frame, or 0. */
893 CORE_ADDR arg_list
= FRAME_LOCALS_ADDRESS (fi
);
896 printf_filtered (" Locals at unknown address,");
899 printf_filtered (" Locals at ");
900 print_address_numeric (arg_list
, 1, gdb_stdout
);
901 printf_filtered (",");
905 FRAME_INIT_SAVED_REGS (fi
);
906 if (fi
->saved_regs
!= NULL
)
908 /* The sp is special; what's returned isn't the save address, but
909 actually the value of the previous frame's sp. */
910 printf_filtered (" Previous frame's sp is ");
911 print_address_numeric (fi
->saved_regs
[SP_REGNUM
], 1, gdb_stdout
);
912 printf_filtered ("\n");
914 numregs
= ARCH_NUM_REGS
;
915 for (i
= 0; i
< numregs
; i
++)
916 if (fi
->saved_regs
[i
] && i
!= SP_REGNUM
)
919 puts_filtered (" Saved registers:\n ");
923 printf_filtered (" %s at ", REGISTER_NAME (i
));
924 print_address_numeric (fi
->saved_regs
[i
], 1, gdb_stdout
);
928 puts_filtered ("\n");
932 /* We could get some information about saved registers by
933 calling get_saved_register on each register. Which info goes
934 with which frame is necessarily lost, however, and I suspect
935 that the users don't care whether they get the info. */
936 puts_filtered ("\n");
941 /* Set a limit on the number of frames printed by default in a
944 static int backtrace_limit
;
947 set_backtrace_limit_command (count_exp
, from_tty
)
951 int count
= parse_and_eval_address (count_exp
);
954 error ("Negative argument not meaningful as backtrace limit.");
956 backtrace_limit
= count
;
960 backtrace_limit_info (arg
, from_tty
)
965 error ("\"Info backtrace-limit\" takes no arguments.");
967 printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit
);
971 /* Print briefly all stack frames or just the innermost COUNT frames. */
974 backtrace_command_1 (count_exp
, show_locals
, from_tty
)
979 struct frame_info
*fi
;
982 register struct frame_info
*trailing
;
983 register int trailing_level
;
985 if (!target_has_stack
)
988 /* The following code must do two things. First, it must
989 set the variable TRAILING to the frame from which we should start
990 printing. Second, it must set the variable count to the number
991 of frames which we should print, or -1 if all of them. */
992 trailing
= get_current_frame ();
996 count
= parse_and_eval_address (count_exp
);
999 struct frame_info
*current
;
1004 while (current
&& count
--)
1007 current
= get_prev_frame (current
);
1010 /* Will stop when CURRENT reaches the top of the stack. TRAILING
1011 will be COUNT below it. */
1015 trailing
= get_prev_frame (trailing
);
1016 current
= get_prev_frame (current
);
1028 struct partial_symtab
*ps
;
1030 /* Read in symbols for all of the frames. Need to do this in
1031 a separate pass so that "Reading in symbols for xxx" messages
1032 don't screw up the appearance of the backtrace. Also
1033 if people have strong opinions against reading symbols for
1034 backtrace this may have to be an option. */
1038 fi
= get_prev_frame (fi
))
1041 ps
= find_pc_psymtab (fi
->pc
);
1043 PSYMTAB_TO_SYMTAB (ps
); /* Force syms to come in */
1047 for (i
= 0, fi
= trailing
;
1049 i
++, fi
= get_prev_frame (fi
))
1053 /* Don't use print_stack_frame; if an error() occurs it probably
1054 means further attempts to backtrace would fail (on the other
1055 hand, perhaps the code does or could be fixed to make sure
1056 the frame->prev field gets set to NULL in that case). */
1057 print_frame_info_base (fi
, trailing_level
+ i
, 0, 1);
1059 print_frame_local_vars(fi
, 1, gdb_stdout
);
1062 /* If we've stopped before the end, mention that. */
1064 printf_filtered ("(More stack frames follow...)\n");
1068 backtrace_command (arg
, from_tty
)
1072 struct cleanup
*old_chain
= (struct cleanup
*)NULL
;
1073 char **argv
= (char **)NULL
;
1074 int argIndicatingFullTrace
= (-1), totArgLen
= 0, argc
= 0;
1077 if (arg
!= (char *)NULL
)
1081 argv
= buildargv(arg
);
1082 old_chain
= make_cleanup(freeargv
, (char *)argv
);
1084 for (i
= 0; (argv
[i
] != (char *)NULL
); i
++)
1088 for (j
= 0; (j
< strlen(argv
[i
])); j
++)
1089 argv
[i
][j
] = tolower(argv
[i
][j
]);
1091 if (argIndicatingFullTrace
< 0 && subsetCompare(argv
[i
], "full"))
1092 argIndicatingFullTrace
= argc
;
1096 totArgLen
+= strlen(argv
[i
]);
1100 if (argIndicatingFullTrace
>= 0)
1104 argPtr
= (char *)xmalloc(totArgLen
+ 1);
1109 memset(argPtr
, 0, totArgLen
+ 1);
1110 for (i
= 0; (i
< (argc
+ 1)); i
++)
1112 if (i
!= argIndicatingFullTrace
)
1114 strcat(argPtr
, argv
[i
]);
1115 strcat(argPtr
, " ");
1121 argPtr
= (char *)NULL
;
1125 backtrace_command_1 (argPtr
, (argIndicatingFullTrace
>= 0), from_tty
);
1127 if (argIndicatingFullTrace
>= 0 && totArgLen
> 0)
1131 do_cleanups(old_chain
);
1135 backtrace_full_command (arg
, from_tty
)
1139 backtrace_command_1 (arg
, 1, from_tty
);
1143 /* Print the local variables of a block B active in FRAME.
1144 Return 1 if any variables were printed; 0 otherwise. */
1147 print_block_frame_locals (b
, fi
, num_tabs
, stream
)
1149 register struct frame_info
*fi
;
1151 register GDB_FILE
*stream
;
1155 register struct symbol
*sym
;
1156 register int values_printed
= 0;
1158 nsyms
= BLOCK_NSYMS (b
);
1160 for (i
= 0; i
< nsyms
; i
++)
1162 sym
= BLOCK_SYM (b
, i
);
1163 switch (SYMBOL_CLASS (sym
))
1170 for (j
= 0; j
< num_tabs
; j
++)
1171 fputs_filtered("\t", stream
);
1172 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1173 fputs_filtered (" = ", stream
);
1174 print_variable_value (sym
, fi
, stream
);
1175 fprintf_filtered (stream
, "\n");
1179 /* Ignore symbols which are not locals. */
1183 return values_printed
;
1186 /* Same, but print labels. */
1189 print_block_frame_labels (b
, have_default
, stream
)
1192 register GDB_FILE
*stream
;
1196 register struct symbol
*sym
;
1197 register int values_printed
= 0;
1199 nsyms
= BLOCK_NSYMS (b
);
1201 for (i
= 0; i
< nsyms
; i
++)
1203 sym
= BLOCK_SYM (b
, i
);
1204 if (STREQ (SYMBOL_NAME (sym
), "default"))
1210 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
1212 struct symtab_and_line sal
;
1213 sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
), 0);
1215 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1218 fprintf_filtered (stream
, " ");
1219 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym
), 1, stream
);
1221 fprintf_filtered (stream
, " in file %s, line %d\n",
1222 sal
.symtab
->filename
, sal
.line
);
1225 return values_printed
;
1228 /* Print on STREAM all the local variables in frame FRAME,
1229 including all the blocks active in that frame
1232 Returns 1 if the job was done,
1233 or 0 if nothing was printed because we have no info
1234 on the function running in FRAME. */
1237 print_frame_local_vars (fi
, num_tabs
, stream
)
1238 register struct frame_info
*fi
;
1239 register int num_tabs
;
1240 register GDB_FILE
*stream
;
1242 register struct block
*block
= get_frame_block (fi
);
1243 register int values_printed
= 0;
1247 fprintf_filtered (stream
, "No symbol table info available.\n");
1253 if (print_block_frame_locals (block
, fi
, num_tabs
, stream
))
1255 /* After handling the function's top-level block, stop.
1256 Don't continue to its superblock, the block of
1257 per-file symbols. */
1258 if (BLOCK_FUNCTION (block
))
1260 block
= BLOCK_SUPERBLOCK (block
);
1263 if (!values_printed
)
1265 fprintf_filtered (stream
, "No locals.\n");
1269 /* Same, but print labels. */
1272 print_frame_label_vars (fi
, this_level_only
, stream
)
1273 register struct frame_info
*fi
;
1274 int this_level_only
;
1275 register GDB_FILE
*stream
;
1277 register struct blockvector
*bl
;
1278 register struct block
*block
= get_frame_block (fi
);
1279 register int values_printed
= 0;
1280 int index
, have_default
= 0;
1281 char *blocks_printed
;
1282 CORE_ADDR pc
= fi
->pc
;
1286 fprintf_filtered (stream
, "No symbol table info available.\n");
1290 bl
= blockvector_for_pc (BLOCK_END (block
) - 4, &index
);
1291 blocks_printed
= (char *) alloca (BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
1292 memset (blocks_printed
, 0, BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
1296 CORE_ADDR end
= BLOCK_END (block
) - 4;
1299 if (bl
!= blockvector_for_pc (end
, &index
))
1300 error ("blockvector blotch");
1301 if (BLOCKVECTOR_BLOCK (bl
, index
) != block
)
1302 error ("blockvector botch");
1303 last_index
= BLOCKVECTOR_NBLOCKS (bl
);
1306 /* Don't print out blocks that have gone by. */
1307 while (index
< last_index
1308 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < pc
)
1311 while (index
< last_index
1312 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < end
)
1314 if (blocks_printed
[index
] == 0)
1316 if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl
, index
), &have_default
, stream
))
1318 blocks_printed
[index
] = 1;
1324 if (values_printed
&& this_level_only
)
1327 /* After handling the function's top-level block, stop.
1328 Don't continue to its superblock, the block of
1329 per-file symbols. */
1330 if (BLOCK_FUNCTION (block
))
1332 block
= BLOCK_SUPERBLOCK (block
);
1335 if (!values_printed
&& !this_level_only
)
1337 fprintf_filtered (stream
, "No catches.\n");
1343 locals_info (args
, from_tty
)
1347 if (!selected_frame
)
1348 error ("No frame selected.");
1349 print_frame_local_vars (selected_frame
, 0, gdb_stdout
);
1353 catch_info (ignore
, from_tty
)
1357 struct symtab_and_line
* sal
;
1359 /* Check for target support for exception handling */
1360 sal
= target_enable_exception_callback (EX_EVENT_CATCH
, 1);
1363 /* Currently not handling this */
1364 /* Ideally, here we should interact with the C++ runtime
1365 system to find the list of active handlers, etc. */
1366 fprintf_filtered (gdb_stdout
, "Info catch not supported with this target/compiler combination.\n");
1368 if (!selected_frame
)
1369 error ("No frame selected.");
1374 /* Assume g++ compiled code -- old v 4.16 behaviour */
1375 if (!selected_frame
)
1376 error ("No frame selected.");
1378 print_frame_label_vars (selected_frame
, 0, gdb_stdout
);
1383 print_frame_arg_vars (fi
, stream
)
1384 register struct frame_info
*fi
;
1385 register GDB_FILE
*stream
;
1387 struct symbol
*func
= get_frame_function (fi
);
1388 register struct block
*b
;
1391 register struct symbol
*sym
, *sym2
;
1392 register int values_printed
= 0;
1396 fprintf_filtered (stream
, "No symbol table info available.\n");
1400 b
= SYMBOL_BLOCK_VALUE (func
);
1401 nsyms
= BLOCK_NSYMS (b
);
1403 for (i
= 0; i
< nsyms
; i
++)
1405 sym
= BLOCK_SYM (b
, i
);
1406 switch (SYMBOL_CLASS (sym
))
1412 case LOC_REGPARM_ADDR
:
1413 case LOC_BASEREG_ARG
:
1415 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1416 fputs_filtered (" = ", stream
);
1418 /* We have to look up the symbol because arguments can have
1419 two entries (one a parameter, one a local) and the one we
1420 want is the local, which lookup_symbol will find for us.
1421 This includes gcc1 (not gcc2) on the sparc when passing a
1422 small structure and gcc2 when the argument type is float
1423 and it is passed as a double and converted to float by
1424 the prologue (in the latter case the type of the LOC_ARG
1425 symbol is double and the type of the LOC_LOCAL symbol is
1426 float). There are also LOC_ARG/LOC_REGISTER pairs which
1427 are not combined in symbol-reading. */
1429 sym2
= lookup_symbol (SYMBOL_NAME (sym
),
1430 b
, VAR_NAMESPACE
, (int *)NULL
, (struct symtab
**)NULL
);
1431 print_variable_value (sym2
, fi
, stream
);
1432 fprintf_filtered (stream
, "\n");
1436 /* Don't worry about things which aren't arguments. */
1441 if (!values_printed
)
1443 fprintf_filtered (stream
, "No arguments.\n");
1448 args_info (ignore
, from_tty
)
1452 if (!selected_frame
)
1453 error ("No frame selected.");
1454 print_frame_arg_vars (selected_frame
, gdb_stdout
);
1459 args_plus_locals_info(ignore
, from_tty
)
1463 args_info(ignore
, from_tty
);
1464 locals_info(ignore
, from_tty
);
1468 /* Select frame FI, and note that its stack level is LEVEL.
1469 LEVEL may be -1 if an actual level number is not known. */
1472 select_frame (fi
, level
)
1473 struct frame_info
*fi
;
1476 register struct symtab
*s
;
1478 selected_frame
= fi
;
1479 selected_frame_level
= level
;
1480 if (selected_frame_level_changed_hook
)
1481 selected_frame_level_changed_hook (level
);
1483 /* Ensure that symbols for this frame are read in. Also, determine the
1484 source language of this frame, and switch to it if desired. */
1487 s
= find_pc_symtab (fi
->pc
);
1489 && s
->language
!= current_language
->la_language
1490 && s
->language
!= language_unknown
1491 && language_mode
== language_mode_auto
) {
1492 set_language(s
->language
);
1494 /* elz: this if here fixes the problem with the pc not being displayed
1495 in the tui asm layout, with no debug symbols. The value of s
1496 would be 0 here, and select_source_symtab would abort the
1497 command by calling the 'error' function*/
1500 TUIDO(((TuiOpaqueFuncPtr
)tui_vSelectSourceSymtab
, s
));
1506 /* Select frame FI, noting that its stack level is LEVEL. Also print
1507 the stack frame and show the source if this is the tui version. */
1509 select_and_print_frame(fi
, level
)
1510 struct frame_info
*fi
;
1513 select_frame(fi
, level
);
1516 print_stack_frame(fi
, level
, 1);
1517 TUIDO(((TuiOpaqueFuncPtr
)tui_vCheckDataValues
, fi
));
1522 /* Select frame FI, noting that its stack level is LEVEL. Be silent if
1525 select_and_maybe_print_frame(fi
, level
)
1526 struct frame_info
*fi
;
1530 select_frame(fi
, level
);
1532 select_and_print_frame(fi
, level
);
1536 /* Store the selected frame and its level into *FRAMEP and *LEVELP.
1537 If there is no selected frame, *FRAMEP is set to NULL. */
1540 record_selected_frame (frameaddrp
, levelp
)
1541 CORE_ADDR
*frameaddrp
;
1544 *frameaddrp
= selected_frame
? selected_frame
->frame
: 0;
1545 *levelp
= selected_frame_level
;
1548 /* Return the symbol-block in which the selected frame is executing.
1549 Can return zero under various legitimate circumstances. */
1552 get_selected_block ()
1554 if (!target_has_stack
)
1557 if (!selected_frame
)
1558 return get_current_block ();
1559 return get_frame_block (selected_frame
);
1562 /* Find a frame a certain number of levels away from FRAME.
1563 LEVEL_OFFSET_PTR points to an int containing the number of levels.
1564 Positive means go to earlier frames (up); negative, the reverse.
1565 The int that contains the number of levels is counted toward
1566 zero as the frames for those levels are found.
1567 If the top or bottom frame is reached, that frame is returned,
1568 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
1569 how much farther the original request asked to go. */
1572 find_relative_frame (frame
, level_offset_ptr
)
1573 register struct frame_info
*frame
;
1574 register int *level_offset_ptr
;
1576 register struct frame_info
*prev
;
1577 register struct frame_info
*frame1
;
1579 /* Going up is simple: just do get_prev_frame enough times
1580 or until initial frame is reached. */
1581 while (*level_offset_ptr
> 0)
1583 prev
= get_prev_frame (frame
);
1586 (*level_offset_ptr
)--;
1589 /* Going down is just as simple. */
1590 if (*level_offset_ptr
< 0)
1592 while (*level_offset_ptr
< 0) {
1593 frame1
= get_next_frame (frame
);
1597 (*level_offset_ptr
)++;
1603 /* The "select_frame" command. With no arg, NOP.
1604 With arg LEVEL_EXP, select the frame at level LEVEL if it is a
1605 valid level. Otherwise, treat level_exp as an address expression
1606 and select it. See parse_frame_specification for more info on proper
1607 frame expressions. */
1611 select_frame_command (level_exp
, from_tty
)
1615 register struct frame_info
*frame
, *frame1
;
1616 unsigned int level
= 0;
1618 if (!target_has_stack
)
1619 error ("No stack.");
1621 frame
= parse_frame_specification (level_exp
);
1623 /* Try to figure out what level this frame is. But if there is
1624 no current stack, don't error out -- let the user set one. */
1626 if (get_current_frame()) {
1627 for (frame1
= get_prev_frame (0);
1628 frame1
&& frame1
!= frame
;
1629 frame1
= get_prev_frame (frame1
))
1636 select_frame (frame
, level
);
1639 /* The "frame" command. With no arg, print selected frame briefly.
1640 With arg, behaves like select_frame and then prints the selected
1644 frame_command (level_exp
, from_tty
)
1648 select_frame_command (level_exp
, from_tty
);
1649 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1652 /* The XDB Compatibility command to print the current frame. */
1655 current_frame_command (level_exp
, from_tty
)
1659 if (target_has_stack
== 0 || selected_frame
== 0)
1660 error ("No stack.");
1661 print_only_stack_frame (selected_frame
, selected_frame_level
, 1);
1664 /* Select the frame up one or COUNT stack levels
1665 from the previously selected frame, and print it briefly. */
1669 up_silently_base (count_exp
)
1672 register struct frame_info
*fi
;
1673 int count
= 1, count1
;
1675 count
= parse_and_eval_address (count_exp
);
1678 if (target_has_stack
== 0 || selected_frame
== 0)
1679 error ("No stack.");
1681 fi
= find_relative_frame (selected_frame
, &count1
);
1682 if (count1
!= 0 && count_exp
== 0)
1683 error ("Initial frame selected; you cannot go up.");
1684 select_frame (fi
, selected_frame_level
+ count
- count1
);
1688 up_silently_command (count_exp
, from_tty
)
1692 up_silently_base(count_exp
);
1694 print_stack_frame (selected_frame
, selected_frame_level
, 1);
1698 up_command (count_exp
, from_tty
)
1702 up_silently_base (count_exp
);
1703 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1706 /* Select the frame down one or COUNT stack levels
1707 from the previously selected frame, and print it briefly. */
1711 down_silently_base (count_exp
)
1714 register struct frame_info
*frame
;
1715 int count
= -1, count1
;
1717 count
= - parse_and_eval_address (count_exp
);
1720 if (target_has_stack
== 0 || selected_frame
== 0)
1721 error ("No stack.");
1723 frame
= find_relative_frame (selected_frame
, &count1
);
1724 if (count1
!= 0 && count_exp
== 0)
1727 /* We only do this if count_exp is not specified. That way "down"
1728 means to really go down (and let me know if that is
1729 impossible), but "down 9999" can be used to mean go all the way
1730 down without getting an error. */
1732 error ("Bottom (i.e., innermost) frame selected; you cannot go down.");
1735 select_frame (frame
, selected_frame_level
+ count
- count1
);
1740 down_silently_command (count_exp
, from_tty
)
1744 down_silently_base (count_exp
);
1746 print_stack_frame (selected_frame
, selected_frame_level
, 1);
1750 down_command (count_exp
, from_tty
)
1754 down_silently_base (count_exp
);
1755 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1759 return_command (retval_exp
, from_tty
)
1763 struct symbol
*thisfun
;
1764 CORE_ADDR selected_frame_addr
;
1765 CORE_ADDR selected_frame_pc
;
1766 struct frame_info
*frame
;
1767 value_ptr return_value
= NULL
;
1769 if (selected_frame
== NULL
)
1770 error ("No selected frame.");
1771 thisfun
= get_frame_function (selected_frame
);
1772 selected_frame_addr
= FRAME_FP (selected_frame
);
1773 selected_frame_pc
= selected_frame
->pc
;
1775 /* Compute the return value (if any -- possibly getting errors here). */
1779 struct type
*return_type
= NULL
;
1781 return_value
= parse_and_eval (retval_exp
);
1783 /* Cast return value to the return type of the function. */
1784 if (thisfun
!= NULL
)
1785 return_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun
));
1786 if (return_type
== NULL
)
1787 return_type
= builtin_type_int
;
1788 return_value
= value_cast (return_type
, return_value
);
1790 /* Make sure we have fully evaluated it, since
1791 it might live in the stack frame we're about to pop. */
1792 if (VALUE_LAZY (return_value
))
1793 value_fetch_lazy (return_value
);
1796 /* If interactive, require confirmation. */
1802 if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun
)))
1804 error ("Not confirmed.");
1809 if (!query ("Make selected stack frame return now? "))
1810 error ("Not confirmed.");
1813 /* Do the real work. Pop until the specified frame is current. We
1814 use this method because the selected_frame is not valid after
1815 a POP_FRAME. The pc comparison makes this work even if the
1816 selected frame shares its fp with another frame. */
1818 while (selected_frame_addr
!= (frame
= get_current_frame())->frame
1819 || selected_frame_pc
!= frame
->pc
)
1822 /* Then pop that frame. */
1826 /* Compute the return value (if any) and store in the place
1827 for return values. */
1830 set_return_value (return_value
);
1832 /* If interactive, print the frame that is now current. */
1835 frame_command ("0", 1);
1837 select_frame_command ("0", 0);
1840 /* Sets the scope to input function name, provided that the
1841 function is within the current stack frame */
1842 typedef struct function_bounds
1844 CORE_ADDR low
, high
;
1848 func_command (arg
, from_tty
)
1852 if (arg
!= (char *)NULL
)
1854 struct frame_info
*fp
;
1856 struct symtabs_and_lines sals
;
1859 struct function_bounds
*funcBounds
= (struct function_bounds
*)NULL
;
1861 fp
= parse_frame_specification("0");
1862 sals
= decode_line_spec(arg
, 1);
1863 funcBounds
= (struct function_bounds
*)xmalloc(
1864 sizeof(struct function_bounds
) * sals
.nelts
);
1865 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
1867 if (sals
.sals
[i
].pc
== (CORE_ADDR
)0 ||
1868 find_pc_partial_function(sals
.sals
[i
].pc
,
1871 &funcBounds
[i
].high
) == 0)
1874 funcBounds
[i
].high
= (CORE_ADDR
)NULL
;
1880 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
1881 found
= (fp
->pc
>= funcBounds
[i
].low
&&
1882 fp
->pc
< funcBounds
[i
].high
);
1886 fp
= find_relative_frame(fp
, &level
);
1888 } while (!found
&& level
== 0);
1894 printf_filtered("'%s' not within current stack frame.\n", arg
);
1895 else if (fp
!= selected_frame
) /* set the stack frame here! */
1896 select_and_print_frame(fp
);
1900 /* Gets the language of the current frame. */
1903 get_frame_language()
1905 register struct symtab
*s
;
1906 enum language flang
; /* The language of the current frame */
1910 s
= find_pc_symtab(selected_frame
->pc
);
1912 flang
= s
->language
;
1914 flang
= language_unknown
;
1917 flang
= language_unknown
;
1923 _initialize_stack ()
1926 backtrace_limit
= 30;
1929 add_com ("return", class_stack
, return_command
,
1930 "Make selected stack frame return to its caller.\n\
1931 Control remains in the debugger, but when you continue\n\
1932 execution will resume in the frame above the one now selected.\n\
1933 If an argument is given, it is an expression for the value to return.");
1935 add_com ("up", class_stack
, up_command
,
1936 "Select and print stack frame that called this one.\n\
1937 An argument says how many frames up to go.");
1938 add_com ("up-silently", class_support
, up_silently_command
,
1939 "Same as the `up' command, but does not print anything.\n\
1940 This is useful in command scripts.");
1942 add_com ("down", class_stack
, down_command
,
1943 "Select and print stack frame called by this one.\n\
1944 An argument says how many frames down to go.");
1945 add_com_alias ("do", "down", class_stack
, 1);
1946 add_com_alias ("dow", "down", class_stack
, 1);
1947 add_com ("down-silently", class_support
, down_silently_command
,
1948 "Same as the `down' command, but does not print anything.\n\
1949 This is useful in command scripts.");
1951 add_com ("frame", class_stack
, frame_command
,
1952 "Select and print a stack frame.\n\
1953 With no argument, print the selected stack frame. (See also \"info frame\").\n\
1954 An argument specifies the frame to select.\n\
1955 It can be a stack frame number or the address of the frame.\n\
1956 With argument, nothing is printed if input is coming from\n\
1957 a command file or a user-defined command.");
1959 add_com_alias ("f", "frame", class_stack
, 1);
1963 add_com("L", class_stack
, current_frame_command
,
1964 "Print the current stack frame.\n");
1965 add_com_alias ("V", "frame", class_stack
, 1);
1967 add_com ("select-frame", class_stack
, select_frame_command
,
1968 "Select a stack frame without printing anything.\n\
1969 An argument specifies the frame to select.\n\
1970 It can be a stack frame number or the address of the frame.\n");
1972 add_com ("backtrace", class_stack
, backtrace_command
,
1973 "Print backtrace of all stack frames, or innermost COUNT frames.\n\
1974 With a negative argument, print outermost -COUNT frames.\n\
1975 Use of the 'full' qualifier also prints the values of the local variables.\n");
1976 add_com_alias ("bt", "backtrace", class_stack
, 0);
1979 add_com_alias ("t", "backtrace", class_stack
, 0);
1980 add_com ("T", class_stack
, backtrace_full_command
,
1981 "Print backtrace of all stack frames, or innermost COUNT frames \n\
1982 and the values of the local variables.\n\
1983 With a negative argument, print outermost -COUNT frames.\n\
1984 Usage: T <count>\n");
1987 add_com_alias ("where", "backtrace", class_alias
, 0);
1988 add_info ("stack", backtrace_command
,
1989 "Backtrace of the stack, or innermost COUNT frames.");
1990 add_info_alias ("s", "stack", 1);
1991 add_info ("frame", frame_info
,
1992 "All about selected stack frame, or frame at ADDR.");
1993 add_info_alias ("f", "frame", 1);
1994 add_info ("locals", locals_info
,
1995 "Local variables of current stack frame.");
1996 add_info ("args", args_info
,
1997 "Argument variables of current stack frame.");
1999 add_com("l", class_info
, args_plus_locals_info
,
2000 "Argument and local variables of current stack frame.");
2003 add_com("func", class_stack
, func_command
,
2004 "Select the stack frame that contains <func>.\nUsage: func <name>\n");
2006 add_info ("catch", catch_info
,
2007 "Exceptions that can be caught in the current stack frame.");
2010 add_cmd ("backtrace-limit", class_stack
, set_backtrace_limit_command
,
2011 "Specify maximum number of frames for \"backtrace\" to print by default.",
2013 add_info ("backtrace-limit", backtrace_limit_info
,
2014 "The maximum number of frames for \"backtrace\" to print by default.");