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,
20 Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
28 #include "expression.h"
34 #include "breakpoint.h"
41 /* Prototypes for exported functions. */
43 void args_info
PARAMS ((char *, int));
45 void locals_info
PARAMS ((char *, int));
47 void (*selected_frame_level_changed_hook
) PARAMS ((int));
49 void _initialize_stack
PARAMS ((void));
51 /* Prototypes for local functions. */
53 static void return_command
PARAMS ((char *, int));
55 static void down_command
PARAMS ((char *, int));
57 static void down_silently_base
PARAMS ((char *));
59 static void down_silently_command
PARAMS ((char *, int));
61 static void up_command
PARAMS ((char *, int));
63 static void up_silently_base
PARAMS ((char *));
65 static void up_silently_command
PARAMS ((char *, int));
67 void frame_command
PARAMS ((char *, int));
69 static void current_frame_command
PARAMS ((char *, int));
71 static void select_frame_command
PARAMS ((char *, int));
73 static void print_frame_arg_vars
PARAMS ((struct frame_info
*, GDB_FILE
*));
75 static void catch_info
PARAMS ((char *, int));
77 static void args_plus_locals_info
PARAMS ((char *, int));
79 static void print_frame_label_vars
PARAMS ((struct frame_info
*,
83 static void print_frame_local_vars
PARAMS ((struct frame_info
*,
87 static int print_block_frame_labels
PARAMS ((struct block
*, int *,
90 static int print_block_frame_locals
PARAMS ((struct block
*,
95 static void print_frame_info_base
PARAMS ((struct frame_info
*, int, int, int));
97 static void print_stack_frame_base
PARAMS ((struct frame_info
*, int, int));
99 static void backtrace_command
PARAMS ((char *, int));
101 struct frame_info
*parse_frame_specification
PARAMS ((char *));
103 static void frame_info
PARAMS ((char *, int));
105 extern int addressprint
; /* Print addresses, or stay symbolic only? */
106 extern int info_verbose
; /* Verbosity of symbol reading msgs */
107 extern int lines_to_list
; /* # of lines "list" command shows by default */
109 /* The "selected" stack frame is used by default for local and arg access.
110 May be zero, for no selected frame. */
112 struct frame_info
*selected_frame
;
114 /* Level of the selected frame:
115 0 for innermost, 1 for its caller, ...
116 or -1 for frame specified by address with no defined level. */
118 int selected_frame_level
;
120 /* Zero means do things normally; we are interacting directly with the
121 user. One means print the full filename and linenumber when a
122 frame is printed, and do so in a format emacs18/emacs19.22 can
123 parse. Two means print similar annotations, but in many more
124 cases and in a slightly different syntax. */
126 int annotation_level
= 0;
129 struct print_stack_frame_args
131 struct frame_info
*fi
;
137 static int print_stack_frame_base_stub
PARAMS ((char *));
139 /* Show and print the frame arguments.
140 Pass the args the way catch_errors wants them. */
141 static int show_and_print_stack_frame_stub
PARAMS ((void *args
));
143 show_and_print_stack_frame_stub (args
)
146 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*) args
;
148 /* Reversed order of these so tuiDo() doesn't occur
149 * in the middle of "Breakpoint 1 ... [location]" printing = RT
152 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
153 print_frame_info (p
->fi
, p
->level
, p
->source
, p
->args
);
158 /* Show or print the frame arguments.
159 Pass the args the way catch_errors wants them. */
160 static int print_stack_frame_stub
PARAMS ((void *args
));
162 print_stack_frame_stub (args
)
165 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*) args
;
168 print_frame_info (p
->fi
, p
->level
, p
->source
, p
->args
);
170 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
174 /* Print a stack frame briefly. FRAME_INFI should be the frame info
175 and LEVEL should be its level in the stack (or -1 for level not
178 /* Pass the args the way catch_errors wants them. */
180 print_stack_frame_base_stub (args
)
183 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*) args
;
185 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
189 /* print the frame arguments to the terminal.
190 Pass the args the way catch_errors wants them. */
191 static int print_only_stack_frame_stub
PARAMS ((void *));
193 print_only_stack_frame_stub (args
)
196 struct print_stack_frame_args
*p
= (struct print_stack_frame_args
*) args
;
198 print_frame_info_base (p
->fi
, p
->level
, p
->source
, p
->args
);
202 /* Print a stack frame briefly. FRAME_INFI should be the frame info
203 and LEVEL should be its level in the stack (or -1 for level not defined).
204 This prints the level, the function executing, the arguments,
205 and the file name and line number.
206 If the pc is not at the beginning of the source line,
207 the actual pc is printed at the beginning.
209 If SOURCE is 1, print the source line as well.
210 If SOURCE is -1, print ONLY the source line. */
213 print_stack_frame_base (fi
, level
, source
)
214 struct frame_info
*fi
;
218 struct print_stack_frame_args args
;
222 args
.source
= source
;
225 catch_errors (print_stack_frame_stub
, &args
, "", RETURN_MASK_ALL
);
228 /* Show and print a stack frame briefly. FRAME_INFI should be the frame info
229 and LEVEL should be its level in the stack (or -1 for level not defined).
230 This prints the level, the function executing, the arguments,
231 and the file name and line number.
232 If the pc is not at the beginning of the source line,
233 the actual pc is printed at the beginning.
235 If SOURCE is 1, print the source line as well.
236 If SOURCE is -1, print ONLY the source line. */
239 show_and_print_stack_frame (fi
, level
, source
)
240 struct frame_info
*fi
;
244 struct print_stack_frame_args args
;
248 args
.source
= source
;
251 catch_errors (show_and_print_stack_frame_stub
, &args
, "", RETURN_MASK_ALL
);
255 /* Show or print a stack frame briefly. FRAME_INFI should be the frame info
256 and LEVEL should be its level in the stack (or -1 for level not defined).
257 This prints the level, the function executing, the arguments,
258 and the file name and line number.
259 If the pc is not at the beginning of the source line,
260 the actual pc is printed at the beginning.
262 If SOURCE is 1, print the source line as well.
263 If SOURCE is -1, print ONLY the source line. */
266 print_stack_frame (fi
, level
, source
)
267 struct frame_info
*fi
;
271 struct print_stack_frame_args args
;
275 args
.source
= source
;
278 catch_errors (print_stack_frame_stub
, (char *) &args
, "", RETURN_MASK_ALL
);
281 /* Print a stack frame briefly. FRAME_INFI should be the frame info
282 and LEVEL should be its level in the stack (or -1 for level not defined).
283 This prints the level, the function executing, the arguments,
284 and the file name and line number.
285 If the pc is not at the beginning of the source line,
286 the actual pc is printed at the beginning.
288 If SOURCE is 1, print the source line as well.
289 If SOURCE is -1, print ONLY the source line. */
292 print_only_stack_frame (fi
, level
, source
)
293 struct frame_info
*fi
;
297 struct print_stack_frame_args args
;
301 args
.source
= source
;
304 catch_errors (print_only_stack_frame_stub
, &args
, "", RETURN_MASK_ALL
);
307 struct print_args_args
310 struct frame_info
*fi
;
314 static int print_args_stub
PARAMS ((PTR
));
316 /* Pass the args the way catch_errors wants them. */
319 print_args_stub (args
)
323 struct print_args_args
*p
= (struct print_args_args
*) args
;
325 numargs
= FRAME_NUM_ARGS (p
->fi
);
326 print_frame_args (p
->func
, p
->fi
, numargs
, p
->stream
);
330 /* Print information about a frame for frame "fi" at level "level".
331 * Used in "where" output, also used to emit breakpoint or step messages.
332 * LEVEL is the level of the frame, or -1 if it is the innermost frame
333 * but we don't want to print the level.
334 * The meaning of the SOURCE argument is:
335 * -1: Print only source line
336 * 0: Print only location
337 * 1: Print location and source line
341 print_frame_info_base (fi
, level
, source
, args
)
342 struct frame_info
*fi
;
347 struct symtab_and_line sal
;
349 register char *funname
= 0;
350 enum language funlang
= language_unknown
;
353 char buf
[MAX_REGISTER_RAW_SIZE
];
356 /* On the 68k, this spends too much time in m68k_find_saved_regs. */
358 /* Get the value of SP_REGNUM relative to the frame. */
359 get_saved_register (buf
, (int *) NULL
, (CORE_ADDR
*) NULL
,
360 FRAME_INFO_ID (fi
), SP_REGNUM
, (enum lval_type
*) NULL
);
361 sp
= extract_address (buf
, REGISTER_RAW_SIZE (SP_REGNUM
));
363 /* This is not a perfect test, because if a function alloca's some
364 memory, puts some code there, and then jumps into it, then the test
365 will succeed even though there is no call dummy. Probably best is
366 to check for a bp_call_dummy breakpoint. */
367 if (PC_IN_CALL_DUMMY (fi
->pc
, sp
, fi
->frame
))
369 if (frame_in_dummy (fi
))
372 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
374 /* Do this regardless of SOURCE because we don't have any source
375 to list for this frame. */
377 printf_filtered ("#%-2d ", level
);
378 annotate_function_call ();
379 printf_filtered ("<function called from gdb>\n");
380 annotate_frame_end ();
383 if (fi
->signal_handler_caller
)
385 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
387 /* Do this regardless of SOURCE because we don't have any source
388 to list for this frame. */
390 printf_filtered ("#%-2d ", level
);
391 annotate_signal_handler_caller ();
392 printf_filtered ("<signal handler called>\n");
393 annotate_frame_end ();
397 /* If fi is not the innermost frame, that normally means that fi->pc
398 points to *after* the call instruction, and we want to get the line
399 containing the call, never the next line. But if the next frame is
400 a signal_handler_caller or a dummy frame, then the next frame was
401 not entered as the result of a call, and we want to get the line
402 containing fi->pc. */
404 find_pc_line (fi
->pc
,
406 && !fi
->next
->signal_handler_caller
407 && !frame_in_dummy (fi
->next
));
409 func
= find_pc_function (fi
->pc
);
412 /* In certain pathological cases, the symtabs give the wrong
413 function (when we are in the first function in a file which
414 is compiled without debugging symbols, the previous function
415 is compiled with debugging symbols, and the "foo.o" symbol
416 that is supposed to tell us where the file with debugging symbols
417 ends has been truncated by ar because it is longer than 15
418 characters). This also occurs if the user uses asm() to create
419 a function but not stabs for it (in a file compiled -g).
421 So look in the minimal symbol tables as well, and if it comes
422 up with a larger address for the function use that instead.
423 I don't think this can ever cause any problems; there shouldn't
424 be any minimal symbols in the middle of a function; if this is
425 ever changed many parts of GDB will need to be changed (and we'll
426 create a find_pc_minimal_function or some such). */
428 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
430 && (SYMBOL_VALUE_ADDRESS (msymbol
)
431 > BLOCK_START (SYMBOL_BLOCK_VALUE (func
))))
434 /* There is no particular reason to think the line number
435 information is wrong. Someone might have just put in
436 a label with asm() but left the line numbers alone. */
437 /* In this case we have no way of knowing the source file
438 and line number, so don't print them. */
441 /* We also don't know anything about the function besides
442 its address and name. */
444 funname
= SYMBOL_NAME (msymbol
);
445 funlang
= SYMBOL_LANGUAGE (msymbol
);
449 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
450 * the demangled name that we already have stored in
451 * the symbol table, but we stored a version with
452 * DMGL_PARAMS turned on, and here we don't want
453 * to display parameters. So call the demangler again,
454 * with DMGL_ANSI only. RT
455 * (Yes, I know that printf_symbol_filtered() will
456 * again try to demangle the name on the fly, but
457 * the issue is that if cplus_demangle() fails here,
458 * it'll fail there too. So we want to catch the failure
459 * ("demangled==NULL" case below) here, while we still
460 * have our hands on the function symbol.)
463 funname
= SYMBOL_NAME (func
);
464 funlang
= SYMBOL_LANGUAGE (func
);
465 if (funlang
== language_cplus
)
467 demangled
= cplus_demangle (funname
, DMGL_ANSI
);
468 if (demangled
== NULL
)
469 /* If the demangler fails, try the demangled name
470 * from the symbol table. This'll have parameters,
471 * but that's preferable to diplaying a mangled name.
473 funname
= SYMBOL_SOURCE_NAME (func
);
479 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
482 funname
= SYMBOL_NAME (msymbol
);
483 funlang
= SYMBOL_LANGUAGE (msymbol
);
487 if (source
>= 0 || !sal
.symtab
)
489 annotate_frame_begin (level
== -1 ? 0 : level
, fi
->pc
);
492 printf_filtered ("#%-2d ", level
);
494 if (fi
->pc
!= sal
.pc
|| !sal
.symtab
)
496 annotate_frame_address ();
497 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
498 annotate_frame_address_end ();
499 printf_filtered (" in ");
501 annotate_frame_function_name ();
502 fprintf_symbol_filtered (gdb_stdout
, funname
? funname
: "??", funlang
,
505 annotate_frame_args ();
506 fputs_filtered (" (", gdb_stdout
);
509 struct print_args_args args
;
512 args
.stream
= gdb_stdout
;
513 catch_errors (print_args_stub
, &args
, "", RETURN_MASK_ALL
);
516 printf_filtered (")");
517 if (sal
.symtab
&& sal
.symtab
->filename
)
519 annotate_frame_source_begin ();
521 printf_filtered (" at ");
522 annotate_frame_source_file ();
523 printf_filtered ("%s", sal
.symtab
->filename
);
524 annotate_frame_source_file_end ();
525 printf_filtered (":");
526 annotate_frame_source_line ();
527 printf_filtered ("%d", sal
.line
);
528 annotate_frame_source_end ();
531 #ifdef PC_LOAD_SEGMENT
532 /* If we couldn't print out function name but if can figure out what
533 load segment this pc value is from, at least print out some info
534 about its load segment. */
537 annotate_frame_where ();
539 printf_filtered (" from %s", PC_LOAD_SEGMENT (fi
->pc
));
543 if (!funname
|| (!sal
.symtab
|| !sal
.symtab
->filename
))
545 char *lib
= PC_SOLIB (fi
->pc
);
548 annotate_frame_where ();
550 printf_filtered (" from %s", lib
);
554 printf_filtered ("\n");
557 if ((source
!= 0) && sal
.symtab
)
560 int mid_statement
= source
< 0 && fi
->pc
!= sal
.pc
;
561 if (annotation_level
)
562 done
= identify_source_line (sal
.symtab
, sal
.line
, mid_statement
,
566 if (addressprint
&& mid_statement
&& !tui_version
)
568 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
569 printf_filtered ("\t");
571 if (print_frame_info_listing_hook
)
572 print_frame_info_listing_hook (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
573 else if (!tui_version
)
574 print_source_lines (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
576 current_source_line
= max (sal
.line
- lines_to_list
/ 2, 1);
579 set_default_breakpoint (1, fi
->pc
, sal
.symtab
, sal
.line
);
581 annotate_frame_end ();
583 gdb_flush (gdb_stdout
);
589 stack_publish_stopped_with_no_frame ()
591 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateOnEnd
));
597 /* Show or print the frame info. If this is the tui, it will be shown in
598 the source display */
600 print_frame_info (fi
, level
, source
, args
)
601 struct frame_info
*fi
;
607 print_frame_info_base (fi
, level
, source
, args
);
610 if (fi
&& (frame_in_dummy (fi
) || fi
->signal_handler_caller
))
611 print_frame_info_base (fi
, level
, source
, args
);
614 TUIDO (((TuiOpaqueFuncPtr
) tui_vShowFrameInfo
, fi
));
619 /* Show the frame info. If this is the tui, it will be shown in
620 the source display otherwise, nothing is done */
622 show_stack_frame (fi
)
623 struct frame_info
*fi
;
625 TUIDO (((TuiOpaqueFuncPtr
) tui_vShowFrameInfo
, fi
));
629 /* Read a frame specification in whatever the appropriate format is.
630 Call error() if the specification is in any way invalid (i.e.
631 this function never returns NULL). */
634 parse_frame_specification (frame_exp
)
639 CORE_ADDR args
[MAXARGS
];
643 char *addr_string
, *p
;
644 struct cleanup
*tmp_cleanup
;
646 while (*frame_exp
== ' ')
651 if (numargs
> MAXARGS
)
652 error ("Too many args in frame specification");
653 /* Parse an argument. */
654 for (p
= frame_exp
; *p
&& *p
!= ' '; p
++)
656 addr_string
= savestring (frame_exp
, p
- frame_exp
);
659 tmp_cleanup
= make_cleanup (free
, addr_string
);
660 args
[numargs
++] = parse_and_eval_address (addr_string
);
661 do_cleanups (tmp_cleanup
);
664 /* Skip spaces, move to possible next arg. */
674 if (selected_frame
== NULL
)
675 error ("No selected frame.");
676 return selected_frame
;
681 struct frame_info
*fid
=
682 find_relative_frame (get_current_frame (), &level
);
683 struct frame_info
*tfid
;
686 /* find_relative_frame was successful */
689 /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications
690 take at least 2 addresses. It is important to detect this case
691 here so that "frame 100" does not give a confusing error message
692 like "frame specification requires two addresses". This of course
693 does not solve the "frame 100" problem for machines on which
694 a frame specification can be made with one address. To solve
695 that, we need a new syntax for a specifying a frame by address.
696 I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for
697 two args, etc.), but people might think that is too much typing,
698 so I guess *0x23,0x45 would be a possible alternative (commas
699 really should be used instead of spaces to delimit; using spaces
700 normally works in an expression). */
701 #ifdef SETUP_ARBITRARY_FRAME
702 error ("No frame %d", args
[0]);
705 /* If (s)he specifies the frame with an address, he deserves what
706 (s)he gets. Still, give the highest one that matches. */
708 for (fid
= get_current_frame ();
709 fid
&& fid
->frame
!= args
[0];
710 fid
= get_prev_frame (fid
))
714 while ((tfid
= get_prev_frame (fid
)) &&
715 (tfid
->frame
== args
[0]))
718 /* We couldn't identify the frame as an existing frame, but
719 perhaps we can create one with a single argument. */
723 #ifdef SETUP_ARBITRARY_FRAME
724 return SETUP_ARBITRARY_FRAME (numargs
, args
);
726 /* Usual case. Do it here rather than have everyone supply
727 a SETUP_ARBITRARY_FRAME that does this. */
729 return create_new_frame (args
[0], 0);
730 error ("Too many args in frame specification");
737 /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except
738 that if it is unsure about the answer, it returns 0
739 instead of guessing (this happens on the VAX and i960, for example).
741 On most machines, we never have to guess about the args address,
742 so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */
743 #if !defined (FRAME_ARGS_ADDRESS_CORRECT)
744 #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS
747 /* Print verbosely the selected frame or the frame at address ADDR.
748 This means absolutely all information in the frame is printed. */
751 frame_info (addr_exp
, from_tty
)
755 struct frame_info
*fi
;
756 struct symtab_and_line sal
;
759 struct frame_info
*calling_frame_info
;
760 int i
, count
, numregs
;
762 enum language funlang
= language_unknown
;
764 if (!target_has_stack
)
767 fi
= parse_frame_specification (addr_exp
);
769 error ("Invalid frame specified.");
771 sal
= find_pc_line (fi
->pc
,
773 && !fi
->next
->signal_handler_caller
774 && !frame_in_dummy (fi
->next
));
775 func
= get_frame_function (fi
);
776 s
= find_pc_symtab (fi
->pc
);
779 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
780 * the demangled name that we already have stored in
781 * the symbol table, but we stored a version with
782 * DMGL_PARAMS turned on, and here we don't want
783 * to display parameters. So call the demangler again,
784 * with DMGL_ANSI only. RT
785 * (Yes, I know that printf_symbol_filtered() will
786 * again try to demangle the name on the fly, but
787 * the issue is that if cplus_demangle() fails here,
788 * it'll fail there too. So we want to catch the failure
789 * ("demangled==NULL" case below) here, while we still
790 * have our hands on the function symbol.)
793 funname
= SYMBOL_NAME (func
);
794 funlang
= SYMBOL_LANGUAGE (func
);
795 if (funlang
== language_cplus
)
797 demangled
= cplus_demangle (funname
, DMGL_ANSI
);
798 /* If the demangler fails, try the demangled name
799 * from the symbol table. This'll have parameters,
800 * but that's preferable to diplaying a mangled name.
802 if (demangled
== NULL
)
803 funname
= SYMBOL_SOURCE_NAME (func
);
808 register struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (fi
->pc
);
811 funname
= SYMBOL_NAME (msymbol
);
812 funlang
= SYMBOL_LANGUAGE (msymbol
);
815 calling_frame_info
= get_prev_frame (fi
);
817 if (!addr_exp
&& selected_frame_level
>= 0)
819 printf_filtered ("Stack level %d, frame at ", selected_frame_level
);
820 print_address_numeric (fi
->frame
, 1, gdb_stdout
);
821 printf_filtered (":\n");
825 printf_filtered ("Stack frame at ");
826 print_address_numeric (fi
->frame
, 1, gdb_stdout
);
827 printf_filtered (":\n");
829 printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM
));
830 print_address_numeric (fi
->pc
, 1, gdb_stdout
);
835 printf_filtered (" in ");
836 fprintf_symbol_filtered (gdb_stdout
, funname
, funlang
,
837 DMGL_ANSI
| DMGL_PARAMS
);
841 printf_filtered (" (%s:%d)", sal
.symtab
->filename
, sal
.line
);
842 puts_filtered ("; ");
844 printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM
));
845 print_address_numeric (FRAME_SAVED_PC (fi
), 1, gdb_stdout
);
846 printf_filtered ("\n");
850 frameless
= FRAMELESS_FUNCTION_INVOCATION (fi
);
852 printf_filtered (" (FRAMELESS),");
855 if (calling_frame_info
)
857 printf_filtered (" called by frame at ");
858 print_address_numeric (calling_frame_info
->frame
, 1, gdb_stdout
);
860 if (fi
->next
&& calling_frame_info
)
865 printf_filtered (" caller of frame at ");
866 print_address_numeric (fi
->next
->frame
, 1, gdb_stdout
);
868 if (fi
->next
|| calling_frame_info
)
869 puts_filtered ("\n");
871 printf_filtered (" source language %s.\n", language_str (s
->language
));
873 #ifdef PRINT_EXTRA_FRAME_INFO
874 PRINT_EXTRA_FRAME_INFO (fi
);
878 /* Address of the argument list for this frame, or 0. */
879 CORE_ADDR arg_list
= FRAME_ARGS_ADDRESS_CORRECT (fi
);
880 /* Number of args for this frame, or -1 if unknown. */
884 printf_filtered (" Arglist at unknown address.\n");
887 printf_filtered (" Arglist at ");
888 print_address_numeric (arg_list
, 1, gdb_stdout
);
889 printf_filtered (",");
891 numargs
= FRAME_NUM_ARGS (fi
);
893 puts_filtered (" args: ");
894 else if (numargs
== 0)
895 puts_filtered (" no args.");
896 else if (numargs
== 1)
897 puts_filtered (" 1 arg: ");
899 printf_filtered (" %d args: ", numargs
);
900 print_frame_args (func
, fi
, numargs
, gdb_stdout
);
901 puts_filtered ("\n");
905 /* Address of the local variables for this frame, or 0. */
906 CORE_ADDR arg_list
= FRAME_LOCALS_ADDRESS (fi
);
909 printf_filtered (" Locals at unknown address,");
912 printf_filtered (" Locals at ");
913 print_address_numeric (arg_list
, 1, gdb_stdout
);
914 printf_filtered (",");
918 FRAME_INIT_SAVED_REGS (fi
);
919 if (fi
->saved_regs
!= NULL
)
921 /* The sp is special; what's returned isn't the save address, but
922 actually the value of the previous frame's sp. */
923 printf_filtered (" Previous frame's sp is ");
924 print_address_numeric (fi
->saved_regs
[SP_REGNUM
], 1, gdb_stdout
);
925 printf_filtered ("\n");
927 numregs
= ARCH_NUM_REGS
;
928 for (i
= 0; i
< numregs
; i
++)
929 if (fi
->saved_regs
[i
] && i
!= SP_REGNUM
)
932 puts_filtered (" Saved registers:\n ");
936 printf_filtered (" %s at ", REGISTER_NAME (i
));
937 print_address_numeric (fi
->saved_regs
[i
], 1, gdb_stdout
);
941 puts_filtered ("\n");
945 /* We could get some information about saved registers by
946 calling get_saved_register on each register. Which info goes
947 with which frame is necessarily lost, however, and I suspect
948 that the users don't care whether they get the info. */
949 puts_filtered ("\n");
954 /* Set a limit on the number of frames printed by default in a
957 static int backtrace_limit
;
960 set_backtrace_limit_command (count_exp
, from_tty
)
964 int count
= parse_and_eval_address (count_exp
);
967 error ("Negative argument not meaningful as backtrace limit.");
969 backtrace_limit
= count
;
973 backtrace_limit_info (arg
, from_tty
)
978 error ("\"Info backtrace-limit\" takes no arguments.");
980 printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit
);
984 /* Print briefly all stack frames or just the innermost COUNT frames. */
986 static void backtrace_command_1
PARAMS ((char *count_exp
, int show_locals
, int from_tty
));
988 backtrace_command_1 (count_exp
, show_locals
, from_tty
)
993 struct frame_info
*fi
;
996 register struct frame_info
*trailing
;
997 register int trailing_level
;
999 if (!target_has_stack
)
1000 error ("No stack.");
1002 /* The following code must do two things. First, it must
1003 set the variable TRAILING to the frame from which we should start
1004 printing. Second, it must set the variable count to the number
1005 of frames which we should print, or -1 if all of them. */
1006 trailing
= get_current_frame ();
1010 count
= parse_and_eval_address (count_exp
);
1013 struct frame_info
*current
;
1018 while (current
&& count
--)
1021 current
= get_prev_frame (current
);
1024 /* Will stop when CURRENT reaches the top of the stack. TRAILING
1025 will be COUNT below it. */
1029 trailing
= get_prev_frame (trailing
);
1030 current
= get_prev_frame (current
);
1042 struct partial_symtab
*ps
;
1044 /* Read in symbols for all of the frames. Need to do this in
1045 a separate pass so that "Reading in symbols for xxx" messages
1046 don't screw up the appearance of the backtrace. Also
1047 if people have strong opinions against reading symbols for
1048 backtrace this may have to be an option. */
1052 fi
= get_prev_frame (fi
))
1055 ps
= find_pc_psymtab (fi
->pc
);
1057 PSYMTAB_TO_SYMTAB (ps
); /* Force syms to come in */
1061 for (i
= 0, fi
= trailing
;
1063 i
++, fi
= get_prev_frame (fi
))
1067 /* Don't use print_stack_frame; if an error() occurs it probably
1068 means further attempts to backtrace would fail (on the other
1069 hand, perhaps the code does or could be fixed to make sure
1070 the frame->prev field gets set to NULL in that case). */
1071 print_frame_info_base (fi
, trailing_level
+ i
, 0, 1);
1073 print_frame_local_vars (fi
, 1, gdb_stdout
);
1076 /* If we've stopped before the end, mention that. */
1078 printf_filtered ("(More stack frames follow...)\n");
1082 backtrace_command (arg
, from_tty
)
1086 struct cleanup
*old_chain
= (struct cleanup
*) NULL
;
1087 char **argv
= (char **) NULL
;
1088 int argIndicatingFullTrace
= (-1), totArgLen
= 0, argc
= 0;
1091 if (arg
!= (char *) NULL
)
1095 argv
= buildargv (arg
);
1096 old_chain
= make_cleanup_freeargv (argv
);
1098 for (i
= 0; (argv
[i
] != (char *) NULL
); i
++)
1102 for (j
= 0; (j
< strlen (argv
[i
])); j
++)
1103 argv
[i
][j
] = tolower (argv
[i
][j
]);
1105 if (argIndicatingFullTrace
< 0 && subset_compare (argv
[i
], "full"))
1106 argIndicatingFullTrace
= argc
;
1110 totArgLen
+= strlen (argv
[i
]);
1114 if (argIndicatingFullTrace
>= 0)
1118 argPtr
= (char *) xmalloc (totArgLen
+ 1);
1123 memset (argPtr
, 0, totArgLen
+ 1);
1124 for (i
= 0; (i
< (argc
+ 1)); i
++)
1126 if (i
!= argIndicatingFullTrace
)
1128 strcat (argPtr
, argv
[i
]);
1129 strcat (argPtr
, " ");
1135 argPtr
= (char *) NULL
;
1139 backtrace_command_1 (argPtr
, (argIndicatingFullTrace
>= 0), from_tty
);
1141 if (argIndicatingFullTrace
>= 0 && totArgLen
> 0)
1145 do_cleanups (old_chain
);
1148 static void backtrace_full_command
PARAMS ((char *arg
, int from_tty
));
1150 backtrace_full_command (arg
, from_tty
)
1154 backtrace_command_1 (arg
, 1, from_tty
);
1158 /* Print the local variables of a block B active in FRAME.
1159 Return 1 if any variables were printed; 0 otherwise. */
1162 print_block_frame_locals (b
, fi
, num_tabs
, stream
)
1164 register struct frame_info
*fi
;
1166 register GDB_FILE
*stream
;
1170 register struct symbol
*sym
;
1171 register int values_printed
= 0;
1173 nsyms
= BLOCK_NSYMS (b
);
1175 for (i
= 0; i
< nsyms
; i
++)
1177 sym
= BLOCK_SYM (b
, i
);
1178 switch (SYMBOL_CLASS (sym
))
1185 for (j
= 0; j
< num_tabs
; j
++)
1186 fputs_filtered ("\t", stream
);
1187 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1188 fputs_filtered (" = ", stream
);
1189 print_variable_value (sym
, fi
, stream
);
1190 fprintf_filtered (stream
, "\n");
1194 /* Ignore symbols which are not locals. */
1198 return values_printed
;
1201 /* Same, but print labels. */
1204 print_block_frame_labels (b
, have_default
, stream
)
1207 register GDB_FILE
*stream
;
1211 register struct symbol
*sym
;
1212 register int values_printed
= 0;
1214 nsyms
= BLOCK_NSYMS (b
);
1216 for (i
= 0; i
< nsyms
; i
++)
1218 sym
= BLOCK_SYM (b
, i
);
1219 if (STREQ (SYMBOL_NAME (sym
), "default"))
1225 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
1227 struct symtab_and_line sal
;
1228 sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
), 0);
1230 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1233 fprintf_filtered (stream
, " ");
1234 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym
), 1, stream
);
1236 fprintf_filtered (stream
, " in file %s, line %d\n",
1237 sal
.symtab
->filename
, sal
.line
);
1240 return values_printed
;
1243 /* Print on STREAM all the local variables in frame FRAME,
1244 including all the blocks active in that frame
1247 Returns 1 if the job was done,
1248 or 0 if nothing was printed because we have no info
1249 on the function running in FRAME. */
1252 print_frame_local_vars (fi
, num_tabs
, stream
)
1253 register struct frame_info
*fi
;
1254 register int num_tabs
;
1255 register GDB_FILE
*stream
;
1257 register struct block
*block
= get_frame_block (fi
);
1258 register int values_printed
= 0;
1262 fprintf_filtered (stream
, "No symbol table info available.\n");
1268 if (print_block_frame_locals (block
, fi
, num_tabs
, stream
))
1270 /* After handling the function's top-level block, stop.
1271 Don't continue to its superblock, the block of
1272 per-file symbols. */
1273 if (BLOCK_FUNCTION (block
))
1275 block
= BLOCK_SUPERBLOCK (block
);
1278 if (!values_printed
)
1280 fprintf_filtered (stream
, "No locals.\n");
1284 /* Same, but print labels. */
1287 print_frame_label_vars (fi
, this_level_only
, stream
)
1288 register struct frame_info
*fi
;
1289 int this_level_only
;
1290 register GDB_FILE
*stream
;
1292 register struct blockvector
*bl
;
1293 register struct block
*block
= get_frame_block (fi
);
1294 register int values_printed
= 0;
1295 int index
, have_default
= 0;
1296 char *blocks_printed
;
1297 CORE_ADDR pc
= fi
->pc
;
1301 fprintf_filtered (stream
, "No symbol table info available.\n");
1305 bl
= blockvector_for_pc (BLOCK_END (block
) - 4, &index
);
1306 blocks_printed
= (char *) alloca (BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
1307 memset (blocks_printed
, 0, BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
1311 CORE_ADDR end
= BLOCK_END (block
) - 4;
1314 if (bl
!= blockvector_for_pc (end
, &index
))
1315 error ("blockvector blotch");
1316 if (BLOCKVECTOR_BLOCK (bl
, index
) != block
)
1317 error ("blockvector botch");
1318 last_index
= BLOCKVECTOR_NBLOCKS (bl
);
1321 /* Don't print out blocks that have gone by. */
1322 while (index
< last_index
1323 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < pc
)
1326 while (index
< last_index
1327 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < end
)
1329 if (blocks_printed
[index
] == 0)
1331 if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl
, index
), &have_default
, stream
))
1333 blocks_printed
[index
] = 1;
1339 if (values_printed
&& this_level_only
)
1342 /* After handling the function's top-level block, stop.
1343 Don't continue to its superblock, the block of
1344 per-file symbols. */
1345 if (BLOCK_FUNCTION (block
))
1347 block
= BLOCK_SUPERBLOCK (block
);
1350 if (!values_printed
&& !this_level_only
)
1352 fprintf_filtered (stream
, "No catches.\n");
1358 locals_info (args
, from_tty
)
1362 if (!selected_frame
)
1363 error ("No frame selected.");
1364 print_frame_local_vars (selected_frame
, 0, gdb_stdout
);
1368 catch_info (ignore
, from_tty
)
1372 struct symtab_and_line
*sal
;
1374 /* Check for target support for exception handling */
1375 sal
= target_enable_exception_callback (EX_EVENT_CATCH
, 1);
1378 /* Currently not handling this */
1379 /* Ideally, here we should interact with the C++ runtime
1380 system to find the list of active handlers, etc. */
1381 fprintf_filtered (gdb_stdout
, "Info catch not supported with this target/compiler combination.\n");
1383 if (!selected_frame
)
1384 error ("No frame selected.");
1389 /* Assume g++ compiled code -- old v 4.16 behaviour */
1390 if (!selected_frame
)
1391 error ("No frame selected.");
1393 print_frame_label_vars (selected_frame
, 0, gdb_stdout
);
1398 print_frame_arg_vars (fi
, stream
)
1399 register struct frame_info
*fi
;
1400 register GDB_FILE
*stream
;
1402 struct symbol
*func
= get_frame_function (fi
);
1403 register struct block
*b
;
1406 register struct symbol
*sym
, *sym2
;
1407 register int values_printed
= 0;
1411 fprintf_filtered (stream
, "No symbol table info available.\n");
1415 b
= SYMBOL_BLOCK_VALUE (func
);
1416 nsyms
= BLOCK_NSYMS (b
);
1418 for (i
= 0; i
< nsyms
; i
++)
1420 sym
= BLOCK_SYM (b
, i
);
1421 switch (SYMBOL_CLASS (sym
))
1427 case LOC_REGPARM_ADDR
:
1428 case LOC_BASEREG_ARG
:
1430 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), stream
);
1431 fputs_filtered (" = ", stream
);
1433 /* We have to look up the symbol because arguments can have
1434 two entries (one a parameter, one a local) and the one we
1435 want is the local, which lookup_symbol will find for us.
1436 This includes gcc1 (not gcc2) on the sparc when passing a
1437 small structure and gcc2 when the argument type is float
1438 and it is passed as a double and converted to float by
1439 the prologue (in the latter case the type of the LOC_ARG
1440 symbol is double and the type of the LOC_LOCAL symbol is
1441 float). There are also LOC_ARG/LOC_REGISTER pairs which
1442 are not combined in symbol-reading. */
1444 sym2
= lookup_symbol (SYMBOL_NAME (sym
),
1445 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1446 print_variable_value (sym2
, fi
, stream
);
1447 fprintf_filtered (stream
, "\n");
1451 /* Don't worry about things which aren't arguments. */
1456 if (!values_printed
)
1458 fprintf_filtered (stream
, "No arguments.\n");
1463 args_info (ignore
, from_tty
)
1467 if (!selected_frame
)
1468 error ("No frame selected.");
1469 print_frame_arg_vars (selected_frame
, gdb_stdout
);
1474 args_plus_locals_info (ignore
, from_tty
)
1478 args_info (ignore
, from_tty
);
1479 locals_info (ignore
, from_tty
);
1483 /* Select frame FI, and note that its stack level is LEVEL.
1484 LEVEL may be -1 if an actual level number is not known. */
1487 select_frame (fi
, level
)
1488 struct frame_info
*fi
;
1491 register struct symtab
*s
;
1493 selected_frame
= fi
;
1494 selected_frame_level
= level
;
1495 if (selected_frame_level_changed_hook
)
1496 selected_frame_level_changed_hook (level
);
1498 /* Ensure that symbols for this frame are read in. Also, determine the
1499 source language of this frame, and switch to it if desired. */
1502 s
= find_pc_symtab (fi
->pc
);
1504 && s
->language
!= current_language
->la_language
1505 && s
->language
!= language_unknown
1506 && language_mode
== language_mode_auto
)
1508 set_language (s
->language
);
1510 /* elz: this if here fixes the problem with the pc not being displayed
1511 in the tui asm layout, with no debug symbols. The value of s
1512 would be 0 here, and select_source_symtab would abort the
1513 command by calling the 'error' function */
1516 TUIDO (((TuiOpaqueFuncPtr
) tui_vSelectSourceSymtab
, s
));
1522 /* Select frame FI, noting that its stack level is LEVEL. Also print
1523 the stack frame and show the source if this is the tui version. */
1525 select_and_print_frame (fi
, level
)
1526 struct frame_info
*fi
;
1529 select_frame (fi
, level
);
1532 print_stack_frame (fi
, level
, 1);
1533 TUIDO (((TuiOpaqueFuncPtr
) tui_vCheckDataValues
, fi
));
1538 /* Select frame FI, noting that its stack level is LEVEL. Be silent if
1542 select_and_maybe_print_frame (fi
, level
)
1543 struct frame_info
*fi
;
1547 select_frame (fi
, level
);
1549 select_and_print_frame (fi
, level
);
1554 /* Store the selected frame and its level into *FRAMEP and *LEVELP.
1555 If there is no selected frame, *FRAMEP is set to NULL. */
1558 record_selected_frame (frameaddrp
, levelp
)
1559 CORE_ADDR
*frameaddrp
;
1562 *frameaddrp
= selected_frame
? selected_frame
->frame
: 0;
1563 *levelp
= selected_frame_level
;
1566 /* Return the symbol-block in which the selected frame is executing.
1567 Can return zero under various legitimate circumstances. */
1570 get_selected_block ()
1572 if (!target_has_stack
)
1575 if (!selected_frame
)
1576 return get_current_block ();
1577 return get_frame_block (selected_frame
);
1580 /* Find a frame a certain number of levels away from FRAME.
1581 LEVEL_OFFSET_PTR points to an int containing the number of levels.
1582 Positive means go to earlier frames (up); negative, the reverse.
1583 The int that contains the number of levels is counted toward
1584 zero as the frames for those levels are found.
1585 If the top or bottom frame is reached, that frame is returned,
1586 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
1587 how much farther the original request asked to go. */
1590 find_relative_frame (frame
, level_offset_ptr
)
1591 register struct frame_info
*frame
;
1592 register int *level_offset_ptr
;
1594 register struct frame_info
*prev
;
1595 register struct frame_info
*frame1
;
1597 /* Going up is simple: just do get_prev_frame enough times
1598 or until initial frame is reached. */
1599 while (*level_offset_ptr
> 0)
1601 prev
= get_prev_frame (frame
);
1604 (*level_offset_ptr
)--;
1607 /* Going down is just as simple. */
1608 if (*level_offset_ptr
< 0)
1610 while (*level_offset_ptr
< 0)
1612 frame1
= get_next_frame (frame
);
1616 (*level_offset_ptr
)++;
1622 /* The "select_frame" command. With no arg, NOP.
1623 With arg LEVEL_EXP, select the frame at level LEVEL if it is a
1624 valid level. Otherwise, treat level_exp as an address expression
1625 and select it. See parse_frame_specification for more info on proper
1626 frame expressions. */
1630 select_frame_command (level_exp
, from_tty
)
1634 register struct frame_info
*frame
, *frame1
;
1635 unsigned int level
= 0;
1637 if (!target_has_stack
)
1638 error ("No stack.");
1640 frame
= parse_frame_specification (level_exp
);
1642 /* Try to figure out what level this frame is. But if there is
1643 no current stack, don't error out -- let the user set one. */
1645 if (get_current_frame ())
1647 for (frame1
= get_prev_frame (0);
1648 frame1
&& frame1
!= frame
;
1649 frame1
= get_prev_frame (frame1
))
1656 select_frame (frame
, level
);
1659 /* The "frame" command. With no arg, print selected frame briefly.
1660 With arg, behaves like select_frame and then prints the selected
1664 frame_command (level_exp
, from_tty
)
1668 select_frame_command (level_exp
, from_tty
);
1669 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1672 /* The XDB Compatibility command to print the current frame. */
1675 current_frame_command (level_exp
, from_tty
)
1679 if (target_has_stack
== 0 || selected_frame
== 0)
1680 error ("No stack.");
1681 print_only_stack_frame (selected_frame
, selected_frame_level
, 1);
1684 /* Select the frame up one or COUNT stack levels
1685 from the previously selected frame, and print it briefly. */
1689 up_silently_base (count_exp
)
1692 register struct frame_info
*fi
;
1693 int count
= 1, count1
;
1695 count
= parse_and_eval_address (count_exp
);
1698 if (target_has_stack
== 0 || selected_frame
== 0)
1699 error ("No stack.");
1701 fi
= find_relative_frame (selected_frame
, &count1
);
1702 if (count1
!= 0 && count_exp
== 0)
1703 error ("Initial frame selected; you cannot go up.");
1704 select_frame (fi
, selected_frame_level
+ count
- count1
);
1708 up_silently_command (count_exp
, from_tty
)
1712 up_silently_base (count_exp
);
1714 print_stack_frame (selected_frame
, selected_frame_level
, 1);
1718 up_command (count_exp
, from_tty
)
1722 up_silently_base (count_exp
);
1723 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1726 /* Select the frame down one or COUNT stack levels
1727 from the previously selected frame, and print it briefly. */
1731 down_silently_base (count_exp
)
1734 register struct frame_info
*frame
;
1735 int count
= -1, count1
;
1737 count
= -parse_and_eval_address (count_exp
);
1740 if (target_has_stack
== 0 || selected_frame
== 0)
1741 error ("No stack.");
1743 frame
= find_relative_frame (selected_frame
, &count1
);
1744 if (count1
!= 0 && count_exp
== 0)
1747 /* We only do this if count_exp is not specified. That way "down"
1748 means to really go down (and let me know if that is
1749 impossible), but "down 9999" can be used to mean go all the way
1750 down without getting an error. */
1752 error ("Bottom (i.e., innermost) frame selected; you cannot go down.");
1755 select_frame (frame
, selected_frame_level
+ count
- count1
);
1760 down_silently_command (count_exp
, from_tty
)
1764 down_silently_base (count_exp
);
1766 print_stack_frame (selected_frame
, selected_frame_level
, 1);
1770 down_command (count_exp
, from_tty
)
1774 down_silently_base (count_exp
);
1775 show_and_print_stack_frame (selected_frame
, selected_frame_level
, 1);
1779 return_command (retval_exp
, from_tty
)
1783 struct symbol
*thisfun
;
1784 CORE_ADDR selected_frame_addr
;
1785 CORE_ADDR selected_frame_pc
;
1786 struct frame_info
*frame
;
1787 value_ptr return_value
= NULL
;
1789 if (selected_frame
== NULL
)
1790 error ("No selected frame.");
1791 thisfun
= get_frame_function (selected_frame
);
1792 selected_frame_addr
= FRAME_FP (selected_frame
);
1793 selected_frame_pc
= selected_frame
->pc
;
1795 /* Compute the return value (if any -- possibly getting errors here). */
1799 struct type
*return_type
= NULL
;
1801 return_value
= parse_and_eval (retval_exp
);
1803 /* Cast return value to the return type of the function. */
1804 if (thisfun
!= NULL
)
1805 return_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun
));
1806 if (return_type
== NULL
)
1807 return_type
= builtin_type_int
;
1808 return_value
= value_cast (return_type
, return_value
);
1810 /* Make sure we have fully evaluated it, since
1811 it might live in the stack frame we're about to pop. */
1812 if (VALUE_LAZY (return_value
))
1813 value_fetch_lazy (return_value
);
1816 /* If interactive, require confirmation. */
1822 if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun
)))
1824 error ("Not confirmed.");
1828 else if (!query ("Make selected stack frame return now? "))
1829 error ("Not confirmed.");
1832 /* Do the real work. Pop until the specified frame is current. We
1833 use this method because the selected_frame is not valid after
1834 a POP_FRAME. The pc comparison makes this work even if the
1835 selected frame shares its fp with another frame. */
1837 while (selected_frame_addr
!= (frame
= get_current_frame ())->frame
1838 || selected_frame_pc
!= frame
->pc
)
1841 /* Then pop that frame. */
1845 /* Compute the return value (if any) and store in the place
1846 for return values. */
1849 set_return_value (return_value
);
1851 /* If interactive, print the frame that is now current. */
1854 frame_command ("0", 1);
1856 select_frame_command ("0", 0);
1859 /* Sets the scope to input function name, provided that the
1860 function is within the current stack frame */
1862 struct function_bounds
1864 CORE_ADDR low
, high
;
1867 static void func_command
PARAMS ((char *arg
, int from_tty
));
1869 func_command (arg
, from_tty
)
1873 struct frame_info
*fp
;
1875 struct symtabs_and_lines sals
;
1878 struct function_bounds
*func_bounds
= (struct function_bounds
*) NULL
;
1880 if (arg
!= (char *) NULL
)
1883 fp
= parse_frame_specification ("0");
1884 sals
= decode_line_spec (arg
, 1);
1885 func_bounds
= (struct function_bounds
*) xmalloc (
1886 sizeof (struct function_bounds
) * sals
.nelts
);
1887 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
1889 if (sals
.sals
[i
].pc
== (CORE_ADDR
) 0 ||
1890 find_pc_partial_function (sals
.sals
[i
].pc
,
1892 &func_bounds
[i
].low
,
1893 &func_bounds
[i
].high
) == 0)
1895 func_bounds
[i
].low
=
1896 func_bounds
[i
].high
= (CORE_ADDR
) NULL
;
1902 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
1903 found
= (fp
->pc
>= func_bounds
[i
].low
&&
1904 fp
->pc
< func_bounds
[i
].high
);
1908 fp
= find_relative_frame (fp
, &level
);
1911 while (!found
&& level
== 0);
1917 printf_filtered ("'%s' not within current stack frame.\n", arg
);
1918 else if (fp
!= selected_frame
)
1919 select_and_print_frame (fp
, level
);
1922 /* Gets the language of the current frame. */
1925 get_frame_language ()
1927 register struct symtab
*s
;
1928 enum language flang
; /* The language of the current frame */
1932 s
= find_pc_symtab (selected_frame
->pc
);
1934 flang
= s
->language
;
1936 flang
= language_unknown
;
1939 flang
= language_unknown
;
1945 _initialize_stack ()
1948 backtrace_limit
= 30;
1951 add_com ("return", class_stack
, return_command
,
1952 "Make selected stack frame return to its caller.\n\
1953 Control remains in the debugger, but when you continue\n\
1954 execution will resume in the frame above the one now selected.\n\
1955 If an argument is given, it is an expression for the value to return.");
1957 add_com ("up", class_stack
, up_command
,
1958 "Select and print stack frame that called this one.\n\
1959 An argument says how many frames up to go.");
1960 add_com ("up-silently", class_support
, up_silently_command
,
1961 "Same as the `up' command, but does not print anything.\n\
1962 This is useful in command scripts.");
1964 add_com ("down", class_stack
, down_command
,
1965 "Select and print stack frame called by this one.\n\
1966 An argument says how many frames down to go.");
1967 add_com_alias ("do", "down", class_stack
, 1);
1968 add_com_alias ("dow", "down", class_stack
, 1);
1969 add_com ("down-silently", class_support
, down_silently_command
,
1970 "Same as the `down' command, but does not print anything.\n\
1971 This is useful in command scripts.");
1973 add_com ("frame", class_stack
, frame_command
,
1974 "Select and print a stack frame.\n\
1975 With no argument, print the selected stack frame. (See also \"info frame\").\n\
1976 An argument specifies the frame to select.\n\
1977 It can be a stack frame number or the address of the frame.\n\
1978 With argument, nothing is printed if input is coming from\n\
1979 a command file or a user-defined command.");
1981 add_com_alias ("f", "frame", class_stack
, 1);
1985 add_com ("L", class_stack
, current_frame_command
,
1986 "Print the current stack frame.\n");
1987 add_com_alias ("V", "frame", class_stack
, 1);
1989 add_com ("select-frame", class_stack
, select_frame_command
,
1990 "Select a stack frame without printing anything.\n\
1991 An argument specifies the frame to select.\n\
1992 It can be a stack frame number or the address of the frame.\n");
1994 add_com ("backtrace", class_stack
, backtrace_command
,
1995 "Print backtrace of all stack frames, or innermost COUNT frames.\n\
1996 With a negative argument, print outermost -COUNT frames.\n\
1997 Use of the 'full' qualifier also prints the values of the local variables.\n");
1998 add_com_alias ("bt", "backtrace", class_stack
, 0);
2001 add_com_alias ("t", "backtrace", class_stack
, 0);
2002 add_com ("T", class_stack
, backtrace_full_command
,
2003 "Print backtrace of all stack frames, or innermost COUNT frames \n\
2004 and the values of the local variables.\n\
2005 With a negative argument, print outermost -COUNT frames.\n\
2006 Usage: T <count>\n");
2009 add_com_alias ("where", "backtrace", class_alias
, 0);
2010 add_info ("stack", backtrace_command
,
2011 "Backtrace of the stack, or innermost COUNT frames.");
2012 add_info_alias ("s", "stack", 1);
2013 add_info ("frame", frame_info
,
2014 "All about selected stack frame, or frame at ADDR.");
2015 add_info_alias ("f", "frame", 1);
2016 add_info ("locals", locals_info
,
2017 "Local variables of current stack frame.");
2018 add_info ("args", args_info
,
2019 "Argument variables of current stack frame.");
2021 add_com ("l", class_info
, args_plus_locals_info
,
2022 "Argument and local variables of current stack frame.");
2025 add_com ("func", class_stack
, func_command
,
2026 "Select the stack frame that contains <func>.\nUsage: func <name>\n");
2028 add_info ("catch", catch_info
,
2029 "Exceptions that can be caught in the current stack frame.");
2032 add_cmd ("backtrace-limit", class_stack
, set_backtrace_limit_command
,
2033 "Specify maximum number of frames for \"backtrace\" to print by default.",
2035 add_info ("backtrace-limit", backtrace_limit_info
,
2036 "The maximum number of frames for \"backtrace\" to print by default.");