1 /* Print and select stack frames for GDB, the GNU debugger.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
26 #include "gdb_string.h"
30 #include "expression.h"
36 #include "breakpoint.h"
42 /* Prototypes for exported functions. */
44 void args_info (char *, int);
46 void locals_info (char *, int);
48 void (*selected_frame_level_changed_hook) (int);
50 void _initialize_stack (void);
52 /* Prototypes for local functions. */
54 static void return_command (char *, int);
56 static void down_command (char *, int);
58 static void down_silently_base (char *);
60 static void down_silently_command (char *, int);
62 static void up_command (char *, int);
64 static void up_silently_base (char *);
66 static void up_silently_command (char *, int);
68 void frame_command (char *, int);
70 static void current_frame_command (char *, int);
72 static void select_frame_command (char *, int);
74 static void print_frame_arg_vars (struct frame_info *, struct ui_file *);
76 static void catch_info (char *, int);
78 static void args_plus_locals_info (char *, int);
80 static void print_frame_label_vars (struct frame_info *, int,
83 static void print_frame_local_vars (struct frame_info *, int,
86 static int print_block_frame_labels (struct block *, int *,
89 static int print_block_frame_locals (struct block *,
94 static void print_frame (struct frame_info *fi,
98 struct symtab_and_line sal);
100 static void print_frame_info_base (struct frame_info *, int, int, int);
102 static void print_stack_frame_base (struct frame_info *, int, int);
104 static void backtrace_command (char *, int);
106 struct frame_info *parse_frame_specification (char *);
108 static void frame_info (char *, int);
110 extern int addressprint; /* Print addresses, or stay symbolic only? */
111 extern int lines_to_list; /* # of lines "list" command shows by default */
113 /* The "selected" stack frame is used by default for local and arg access.
114 May be zero, for no selected frame. */
116 struct frame_info *selected_frame;
118 /* Level of the selected frame:
119 0 for innermost, 1 for its caller, ...
120 or -1 for frame specified by address with no defined level. */
122 /* Level of the selected frame: 0 for innermost, 1 for its caller, ...
123 or -1 for NULL frame. */
126 frame_relative_level (struct frame_info *fi)
134 /* Zero means do things normally; we are interacting directly with the
135 user. One means print the full filename and linenumber when a
136 frame is printed, and do so in a format emacs18/emacs19.22 can
137 parse. Two means print similar annotations, but in many more
138 cases and in a slightly different syntax. */
140 int annotation_level = 0;
143 struct print_stack_frame_args
145 struct frame_info *fi;
151 static int print_stack_frame_base_stub (char *);
153 /* Show and print the frame arguments.
154 Pass the args the way catch_errors wants them. */
155 static int show_and_print_stack_frame_stub (void *args);
157 show_and_print_stack_frame_stub (void *args)
159 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
161 print_frame_info (p->fi, p->level, p->source, p->args);
166 /* Show or print the frame arguments.
167 Pass the args the way catch_errors wants them. */
168 static int print_stack_frame_stub (void *args);
170 print_stack_frame_stub (void *args)
172 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
174 print_frame_info_base (p->fi, p->level, p->source, p->args);
178 /* Print a stack frame briefly. FRAME_INFI should be the frame info
179 and LEVEL should be its level in the stack (or -1 for level not
182 /* Pass the args the way catch_errors wants them. */
184 print_stack_frame_base_stub (char *args)
186 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
188 print_frame_info_base (p->fi, p->level, p->source, p->args);
192 /* print the frame arguments to the terminal.
193 Pass the args the way catch_errors wants them. */
194 static int print_only_stack_frame_stub (void *);
196 print_only_stack_frame_stub (void *args)
198 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
200 print_frame_info_base (p->fi, p->level, p->source, p->args);
204 /* Print a stack frame briefly. FRAME_INFI should be the frame info
205 and LEVEL should be its level in the stack (or -1 for level not defined).
206 This prints the level, the function executing, the arguments,
207 and the file name and line number.
208 If the pc is not at the beginning of the source line,
209 the actual pc is printed at the beginning.
211 If SOURCE is 1, print the source line as well.
212 If SOURCE is -1, print ONLY the source line. */
215 print_stack_frame_base (struct frame_info *fi, int level, int source)
217 struct print_stack_frame_args args;
221 args.source = source;
224 catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL);
227 /* Show and print a stack frame briefly. FRAME_INFI should be the frame info
228 and LEVEL should be its level in the stack (or -1 for level not defined).
229 This prints the level, the function executing, the arguments,
230 and the file name and line number.
231 If the pc is not at the beginning of the source line,
232 the actual pc is printed at the beginning.
234 If SOURCE is 1, print the source line as well.
235 If SOURCE is -1, print ONLY the source line. */
238 show_and_print_stack_frame (struct frame_info *fi, int level, int source)
240 struct print_stack_frame_args args;
244 args.source = source;
247 catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL);
251 /* Show or print a stack frame briefly. FRAME_INFI should be the frame info
252 and LEVEL should be its level in the stack (or -1 for level not defined).
253 This prints the level, the function executing, the arguments,
254 and the file name and line number.
255 If the pc is not at the beginning of the source line,
256 the actual pc is printed at the beginning.
258 If SOURCE is 1, print the source line as well.
259 If SOURCE is -1, print ONLY the source line. */
262 print_stack_frame (struct frame_info *fi, int level, int source)
264 struct print_stack_frame_args args;
268 args.source = source;
271 catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL);
274 /* Print a stack frame briefly. FRAME_INFI should be the frame info
275 and LEVEL should be its level in the stack (or -1 for level not defined).
276 This prints the level, the function executing, the arguments,
277 and the file name and line number.
278 If the pc is not at the beginning of the source line,
279 the actual pc is printed at the beginning.
281 If SOURCE is 1, print the source line as well.
282 If SOURCE is -1, print ONLY the source line. */
285 print_only_stack_frame (struct frame_info *fi, int level, int source)
287 struct print_stack_frame_args args;
291 args.source = source;
294 catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL);
297 struct print_args_args
300 struct frame_info *fi;
301 struct ui_file *stream;
304 static int print_args_stub (PTR);
306 /* Pass the args the way catch_errors wants them. */
309 print_args_stub (PTR args)
312 struct print_args_args *p = (struct print_args_args *) args;
314 numargs = FRAME_NUM_ARGS (p->fi);
315 print_frame_args (p->func, p->fi, numargs, p->stream);
319 /* Print information about a frame for frame "fi" at level "level".
320 Used in "where" output, also used to emit breakpoint or step
322 LEVEL is the level of the frame, or -1 if it is the
323 innermost frame but we don't want to print the level.
324 The meaning of the SOURCE argument is:
325 SRC_LINE: Print only source line
326 LOCATION: Print only location
327 LOC_AND_SRC: Print location and source line. */
330 print_frame_info_base (struct frame_info *fi, int level, int source, int args)
332 struct symtab_and_line sal;
337 char buf[MAX_REGISTER_RAW_SIZE];
340 /* On the 68k, this spends too much time in m68k_find_saved_regs. */
342 /* Get the value of SP_REGNUM relative to the frame. */
343 get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL,
344 FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL);
345 sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM));
347 /* This is not a perfect test, because if a function alloca's some
348 memory, puts some code there, and then jumps into it, then the test
349 will succeed even though there is no call dummy. Probably best is
350 to check for a bp_call_dummy breakpoint. */
351 if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame))
353 if (frame_in_dummy (fi))
356 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
358 /* Do this regardless of SOURCE because we don't have any source
359 to list for this frame. */
361 printf_filtered ("#%-2d ", level);
362 annotate_function_call ();
363 printf_filtered ("<function called from gdb>\n");
364 annotate_frame_end ();
367 if (fi->signal_handler_caller)
369 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
371 /* Do this regardless of SOURCE because we don't have any source
372 to list for this frame. */
374 printf_filtered ("#%-2d ", level);
375 annotate_signal_handler_caller ();
376 printf_filtered ("<signal handler called>\n");
377 annotate_frame_end ();
381 /* If fi is not the innermost frame, that normally means that fi->pc
382 points to *after* the call instruction, and we want to get the line
383 containing the call, never the next line. But if the next frame is
384 a signal_handler_caller or a dummy frame, then the next frame was
385 not entered as the result of a call, and we want to get the line
386 containing fi->pc. */
388 find_pc_line (fi->pc,
390 && !fi->next->signal_handler_caller
391 && !frame_in_dummy (fi->next));
393 location_print = (source == LOCATION
394 || source == LOC_AND_ADDRESS
395 || source == SRC_AND_LOC);
397 if (location_print || !sal.symtab)
398 print_frame (fi, level, source, args, sal);
400 source_print = (source == SRC_LINE || source == SRC_AND_LOC);
403 current_source_symtab = sal.symtab;
404 current_source_line = sal.line;
407 if (source_print && sal.symtab)
410 int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc);
412 if (annotation_level)
413 done = identify_source_line (sal.symtab, sal.line, mid_statement,
417 if (print_frame_info_listing_hook)
418 print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0);
421 /* We used to do this earlier, but that is clearly
422 wrong. This function is used by many different
423 parts of gdb, including normal_stop in infrun.c,
424 which uses this to print out the current PC
425 when we stepi/nexti into the middle of a source
426 line. Only the command line really wants this
427 behavior. Other UIs probably would like the
428 ability to decide for themselves if it is desired. */
429 if (addressprint && mid_statement)
431 ui_out_field_core_addr (uiout, "addr", fi->pc);
432 ui_out_text (uiout, "\t");
435 print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
438 current_source_line = max (sal.line - lines_to_list / 2, 1);
442 set_default_breakpoint (1, fi->pc, sal.symtab, sal.line);
444 annotate_frame_end ();
446 gdb_flush (gdb_stdout);
450 print_frame (struct frame_info *fi,
454 struct symtab_and_line sal)
457 register char *funname = 0;
458 enum language funlang = language_unknown;
459 struct ui_stream *stb;
460 struct cleanup *old_chain;
461 struct cleanup *list_chain;
463 stb = ui_out_stream_new (uiout);
464 old_chain = make_cleanup_ui_out_stream_delete (stb);
466 func = find_pc_function (frame_address_in_block (fi));
469 /* In certain pathological cases, the symtabs give the wrong
470 function (when we are in the first function in a file which
471 is compiled without debugging symbols, the previous function
472 is compiled with debugging symbols, and the "foo.o" symbol
473 that is supposed to tell us where the file with debugging symbols
474 ends has been truncated by ar because it is longer than 15
475 characters). This also occurs if the user uses asm() to create
476 a function but not stabs for it (in a file compiled -g).
478 So look in the minimal symbol tables as well, and if it comes
479 up with a larger address for the function use that instead.
480 I don't think this can ever cause any problems; there shouldn't
481 be any minimal symbols in the middle of a function; if this is
482 ever changed many parts of GDB will need to be changed (and we'll
483 create a find_pc_minimal_function or some such). */
485 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi));
487 && (SYMBOL_VALUE_ADDRESS (msymbol)
488 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
491 /* There is no particular reason to think the line number
492 information is wrong. Someone might have just put in
493 a label with asm() but left the line numbers alone. */
494 /* In this case we have no way of knowing the source file
495 and line number, so don't print them. */
498 /* We also don't know anything about the function besides
499 its address and name. */
501 funname = SYMBOL_NAME (msymbol);
502 funlang = SYMBOL_LANGUAGE (msymbol);
506 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the
507 demangled name that we already have stored in the symbol
508 table, but we stored a version with DMGL_PARAMS turned
509 on, and here we don't want to display parameters. So call
510 the demangler again, with DMGL_ANSI only. (Yes, I know
511 that printf_symbol_filtered() will again try to demangle
512 the name on the fly, but the issue is that if
513 cplus_demangle() fails here, it'll fail there too. So we
514 want to catch the failure ("demangled==NULL" case below)
515 here, while we still have our hands on the function
518 funname = SYMBOL_NAME (func);
519 funlang = SYMBOL_LANGUAGE (func);
520 if (funlang == language_cplus)
522 demangled = cplus_demangle (funname, DMGL_ANSI);
523 if (demangled == NULL)
524 /* If the demangler fails, try the demangled name from
525 the symbol table. This'll have parameters, but
526 that's preferable to diplaying a mangled name. */
527 funname = SYMBOL_SOURCE_NAME (func);
533 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi));
536 funname = SYMBOL_NAME (msymbol);
537 funlang = SYMBOL_LANGUAGE (msymbol);
541 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
543 list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
547 ui_out_text (uiout, "#");
548 ui_out_field_fmt (uiout, "level", "%-2d", level);
549 ui_out_spaces (uiout, 1);
552 if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS)
554 annotate_frame_address ();
555 ui_out_field_core_addr (uiout, "addr", fi->pc);
556 annotate_frame_address_end ();
557 ui_out_text (uiout, " in ");
559 annotate_frame_function_name ();
560 fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang,
562 ui_out_field_stream (uiout, "func", stb);
563 ui_out_wrap_hint (uiout, " ");
564 annotate_frame_args ();
566 ui_out_text (uiout, " (");
569 struct print_args_args args;
570 struct cleanup *args_list_chain;
573 args.stream = gdb_stdout;
574 args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args");
575 catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL);
576 /* FIXME: args must be a list. If one argument is a string it will
577 have " that will not be properly escaped. */
578 /* Invoke ui_out_tuple_end. */
579 do_cleanups (args_list_chain);
582 ui_out_text (uiout, ")");
583 if (sal.symtab && sal.symtab->filename)
585 annotate_frame_source_begin ();
586 ui_out_wrap_hint (uiout, " ");
587 ui_out_text (uiout, " at ");
588 annotate_frame_source_file ();
589 ui_out_field_string (uiout, "file", sal.symtab->filename);
590 annotate_frame_source_file_end ();
591 ui_out_text (uiout, ":");
592 annotate_frame_source_line ();
593 ui_out_field_int (uiout, "line", sal.line);
594 annotate_frame_source_end ();
598 if (!funname || (!sal.symtab || !sal.symtab->filename))
600 char *lib = PC_SOLIB (fi->pc);
603 annotate_frame_where ();
604 ui_out_wrap_hint (uiout, " ");
605 ui_out_text (uiout, " from ");
606 ui_out_field_string (uiout, "from", lib);
609 #endif /* PC_SOLIB */
611 /* do_cleanups will call ui_out_tuple_end() for us. */
612 do_cleanups (list_chain);
613 ui_out_text (uiout, "\n");
614 do_cleanups (old_chain);
618 /* Show or print the frame info. If this is the tui, it will be shown in
619 the source display */
621 print_frame_info (struct frame_info *fi, register int level, int source,
624 print_frame_info_base (fi, level, source, args);
627 /* Show the frame info. If this is the tui, it will be shown in
628 the source display otherwise, nothing is done */
630 show_stack_frame (struct frame_info *fi)
635 /* Read a frame specification in whatever the appropriate format is.
636 Call error() if the specification is in any way invalid (i.e.
637 this function never returns NULL). */
640 parse_frame_specification (char *frame_exp)
644 CORE_ADDR args[MAXARGS];
649 char *addr_string, *p;
650 struct cleanup *tmp_cleanup;
652 while (*frame_exp == ' ')
657 if (numargs > MAXARGS)
658 error ("Too many args in frame specification");
659 /* Parse an argument. */
660 for (p = frame_exp; *p && *p != ' '; p++)
662 addr_string = savestring (frame_exp, p - frame_exp);
667 tmp_cleanup = make_cleanup (xfree, addr_string);
669 /* NOTE: we call parse_and_eval and then both
670 value_as_long and value_as_address rather than calling
671 parse_and_eval_long and parse_and_eval_address because
672 of the issue of potential side effects from evaluating
674 vp = parse_and_eval (addr_string);
676 level = value_as_long (vp);
678 args[numargs++] = value_as_address (vp);
679 do_cleanups (tmp_cleanup);
682 /* Skip spaces, move to possible next arg. */
692 if (selected_frame == NULL)
693 error ("No selected frame.");
694 return selected_frame;
698 struct frame_info *fid =
699 find_relative_frame (get_current_frame (), &level);
700 struct frame_info *tfid;
703 /* find_relative_frame was successful */
706 /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications
707 take at least 2 addresses. It is important to detect this case
708 here so that "frame 100" does not give a confusing error message
709 like "frame specification requires two addresses". This of course
710 does not solve the "frame 100" problem for machines on which
711 a frame specification can be made with one address. To solve
712 that, we need a new syntax for a specifying a frame by address.
713 I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for
714 two args, etc.), but people might think that is too much typing,
715 so I guess *0x23,0x45 would be a possible alternative (commas
716 really should be used instead of spaces to delimit; using spaces
717 normally works in an expression). */
718 #ifdef SETUP_ARBITRARY_FRAME
719 error ("No frame %s", paddr_d (args[0]));
722 /* If (s)he specifies the frame with an address, he deserves what
723 (s)he gets. Still, give the highest one that matches. */
725 for (fid = get_current_frame ();
726 fid && fid->frame != args[0];
727 fid = get_prev_frame (fid))
731 while ((tfid = get_prev_frame (fid)) &&
732 (tfid->frame == args[0]))
735 /* We couldn't identify the frame as an existing frame, but
736 perhaps we can create one with a single argument. */
740 #ifdef SETUP_ARBITRARY_FRAME
741 return SETUP_ARBITRARY_FRAME (numargs, args);
743 /* Usual case. Do it here rather than have everyone supply
744 a SETUP_ARBITRARY_FRAME that does this. */
746 return create_new_frame (args[0], 0);
747 error ("Too many args in frame specification");
754 /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except
755 that if it is unsure about the answer, it returns 0
756 instead of guessing (this happens on the VAX and i960, for example).
758 On most machines, we never have to guess about the args address,
759 so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */
760 #if !defined (FRAME_ARGS_ADDRESS_CORRECT)
761 #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS
764 /* Print verbosely the selected frame or the frame at address ADDR.
765 This means absolutely all information in the frame is printed. */
768 frame_info (char *addr_exp, int from_tty)
770 struct frame_info *fi;
771 struct symtab_and_line sal;
774 struct frame_info *calling_frame_info;
775 int i, count, numregs;
777 enum language funlang = language_unknown;
779 if (!target_has_stack)
782 fi = parse_frame_specification (addr_exp);
784 error ("Invalid frame specified.");
786 sal = find_pc_line (fi->pc,
788 && !fi->next->signal_handler_caller
789 && !frame_in_dummy (fi->next));
790 func = get_frame_function (fi);
791 s = find_pc_symtab (fi->pc);
794 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
795 * the demangled name that we already have stored in
796 * the symbol table, but we stored a version with
797 * DMGL_PARAMS turned on, and here we don't want
798 * to display parameters. So call the demangler again,
799 * with DMGL_ANSI only. RT
800 * (Yes, I know that printf_symbol_filtered() will
801 * again try to demangle the name on the fly, but
802 * the issue is that if cplus_demangle() fails here,
803 * it'll fail there too. So we want to catch the failure
804 * ("demangled==NULL" case below) here, while we still
805 * have our hands on the function symbol.)
808 funname = SYMBOL_NAME (func);
809 funlang = SYMBOL_LANGUAGE (func);
810 if (funlang == language_cplus)
812 demangled = cplus_demangle (funname, DMGL_ANSI);
813 /* If the demangler fails, try the demangled name
814 * from the symbol table. This'll have parameters,
815 * but that's preferable to diplaying a mangled name.
817 if (demangled == NULL)
818 funname = SYMBOL_SOURCE_NAME (func);
823 register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
826 funname = SYMBOL_NAME (msymbol);
827 funlang = SYMBOL_LANGUAGE (msymbol);
830 calling_frame_info = get_prev_frame (fi);
832 if (!addr_exp && frame_relative_level (selected_frame) >= 0)
834 printf_filtered ("Stack level %d, frame at ",
835 frame_relative_level (selected_frame));
836 print_address_numeric (fi->frame, 1, gdb_stdout);
837 printf_filtered (":\n");
841 printf_filtered ("Stack frame at ");
842 print_address_numeric (fi->frame, 1, gdb_stdout);
843 printf_filtered (":\n");
845 printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM));
846 print_address_numeric (fi->pc, 1, gdb_stdout);
851 printf_filtered (" in ");
852 fprintf_symbol_filtered (gdb_stdout, funname, funlang,
853 DMGL_ANSI | DMGL_PARAMS);
857 printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line);
858 puts_filtered ("; ");
860 printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM));
861 print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout);
862 printf_filtered ("\n");
866 frameless = FRAMELESS_FUNCTION_INVOCATION (fi);
868 printf_filtered (" (FRAMELESS),");
871 if (calling_frame_info)
873 printf_filtered (" called by frame at ");
874 print_address_numeric (calling_frame_info->frame, 1, gdb_stdout);
876 if (fi->next && calling_frame_info)
881 printf_filtered (" caller of frame at ");
882 print_address_numeric (fi->next->frame, 1, gdb_stdout);
884 if (fi->next || calling_frame_info)
885 puts_filtered ("\n");
887 printf_filtered (" source language %s.\n", language_str (s->language));
889 #ifdef PRINT_EXTRA_FRAME_INFO
890 PRINT_EXTRA_FRAME_INFO (fi);
894 /* Address of the argument list for this frame, or 0. */
895 CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi);
896 /* Number of args for this frame, or -1 if unknown. */
900 printf_filtered (" Arglist at unknown address.\n");
903 printf_filtered (" Arglist at ");
904 print_address_numeric (arg_list, 1, gdb_stdout);
905 printf_filtered (",");
907 numargs = FRAME_NUM_ARGS (fi);
909 puts_filtered (" args: ");
910 else if (numargs == 0)
911 puts_filtered (" no args.");
912 else if (numargs == 1)
913 puts_filtered (" 1 arg: ");
915 printf_filtered (" %d args: ", numargs);
916 print_frame_args (func, fi, numargs, gdb_stdout);
917 puts_filtered ("\n");
921 /* Address of the local variables for this frame, or 0. */
922 CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi);
925 printf_filtered (" Locals at unknown address,");
928 printf_filtered (" Locals at ");
929 print_address_numeric (arg_list, 1, gdb_stdout);
930 printf_filtered (",");
934 if (fi->saved_regs == NULL)
935 FRAME_INIT_SAVED_REGS (fi);
936 /* Print as much information as possible on the location of all the
947 /* The sp is special; what's displayed isn't the save address, but
948 the value of the previous frame's sp. This is a legacy thing,
949 at one stage the frame cached the previous frame's SP instead
950 of its address, hence it was easiest to just display the cached
954 /* Find out the location of the saved stack pointer with out
955 actually evaluating it. */
956 frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr,
958 if (!optimized && lval == not_lval)
960 void *value = alloca (MAX_REGISTER_RAW_SIZE);
962 frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr,
964 sp = extract_address (value, REGISTER_RAW_SIZE (SP_REGNUM));
965 printf_filtered (" Previous frame's sp is ");
966 print_address_numeric (sp, 1, gdb_stdout);
967 printf_filtered ("\n");
970 else if (!optimized && lval == lval_memory)
972 printf_filtered (" Previous frame's sp at ");
973 print_address_numeric (addr, 1, gdb_stdout);
974 printf_filtered ("\n");
977 else if (!optimized && lval == lval_register)
979 printf_filtered (" Previous frame's sp in %s\n",
980 REGISTER_NAME (realnum));
983 /* else keep quiet. */
987 numregs = NUM_REGS + NUM_PSEUDO_REGS;
988 for (i = 0; i < numregs; i++)
991 /* Find out the location of the saved register without
992 fetching the corresponding value. */
993 frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum,
995 /* For moment, only display registers that were saved on the
997 if (!optimized && lval == lval_memory)
1000 puts_filtered (" Saved registers:\n ");
1002 puts_filtered (",");
1004 printf_filtered (" %s at ", REGISTER_NAME (i));
1005 print_address_numeric (addr, 1, gdb_stdout);
1009 if (count || need_nl)
1010 puts_filtered ("\n");
1015 /* Set a limit on the number of frames printed by default in a
1018 static int backtrace_limit;
1021 set_backtrace_limit_command (char *count_exp, int from_tty)
1023 int count = parse_and_eval_long (count_exp);
1026 error ("Negative argument not meaningful as backtrace limit.");
1028 backtrace_limit = count;
1032 backtrace_limit_info (char *arg, int from_tty)
1035 error ("\"Info backtrace-limit\" takes no arguments.");
1037 printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit);
1041 /* Print briefly all stack frames or just the innermost COUNT frames. */
1043 static void backtrace_command_1 (char *count_exp, int show_locals,
1046 backtrace_command_1 (char *count_exp, int show_locals, int from_tty)
1048 struct frame_info *fi;
1051 register struct frame_info *trailing;
1052 register int trailing_level;
1054 if (!target_has_stack)
1055 error ("No stack.");
1057 /* The following code must do two things. First, it must
1058 set the variable TRAILING to the frame from which we should start
1059 printing. Second, it must set the variable count to the number
1060 of frames which we should print, or -1 if all of them. */
1061 trailing = get_current_frame ();
1063 /* The target can be in a state where there is no valid frames
1064 (e.g., just connected). */
1065 if (trailing == NULL)
1066 error ("No stack.");
1071 count = parse_and_eval_long (count_exp);
1074 struct frame_info *current;
1079 while (current && count--)
1082 current = get_prev_frame (current);
1085 /* Will stop when CURRENT reaches the top of the stack. TRAILING
1086 will be COUNT below it. */
1090 trailing = get_prev_frame (trailing);
1091 current = get_prev_frame (current);
1103 struct partial_symtab *ps;
1105 /* Read in symbols for all of the frames. Need to do this in
1106 a separate pass so that "Reading in symbols for xxx" messages
1107 don't screw up the appearance of the backtrace. Also
1108 if people have strong opinions against reading symbols for
1109 backtrace this may have to be an option. */
1113 fi = get_prev_frame (fi))
1116 ps = find_pc_psymtab (frame_address_in_block (fi));
1118 PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */
1122 for (i = 0, fi = trailing;
1124 i++, fi = get_prev_frame (fi))
1128 /* Don't use print_stack_frame; if an error() occurs it probably
1129 means further attempts to backtrace would fail (on the other
1130 hand, perhaps the code does or could be fixed to make sure
1131 the frame->prev field gets set to NULL in that case). */
1132 print_frame_info_base (fi, trailing_level + i, 0, 1);
1134 print_frame_local_vars (fi, 1, gdb_stdout);
1137 /* If we've stopped before the end, mention that. */
1139 printf_filtered ("(More stack frames follow...)\n");
1143 backtrace_command (char *arg, int from_tty)
1145 struct cleanup *old_chain = (struct cleanup *) NULL;
1146 char **argv = (char **) NULL;
1147 int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0;
1150 if (arg != (char *) NULL)
1154 argv = buildargv (arg);
1155 old_chain = make_cleanup_freeargv (argv);
1157 for (i = 0; (argv[i] != (char *) NULL); i++)
1161 for (j = 0; (j < strlen (argv[i])); j++)
1162 argv[i][j] = tolower (argv[i][j]);
1164 if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full"))
1165 argIndicatingFullTrace = argc;
1169 totArgLen += strlen (argv[i]);
1173 if (argIndicatingFullTrace >= 0)
1177 argPtr = (char *) xmalloc (totArgLen + 1);
1182 memset (argPtr, 0, totArgLen + 1);
1183 for (i = 0; (i < (argc + 1)); i++)
1185 if (i != argIndicatingFullTrace)
1187 strcat (argPtr, argv[i]);
1188 strcat (argPtr, " ");
1194 argPtr = (char *) NULL;
1198 backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty);
1200 if (argIndicatingFullTrace >= 0 && totArgLen > 0)
1204 do_cleanups (old_chain);
1207 static void backtrace_full_command (char *arg, int from_tty);
1209 backtrace_full_command (char *arg, int from_tty)
1211 backtrace_command_1 (arg, 1, from_tty);
1215 /* Print the local variables of a block B active in FRAME.
1216 Return 1 if any variables were printed; 0 otherwise. */
1219 print_block_frame_locals (struct block *b, register struct frame_info *fi,
1220 int num_tabs, register struct ui_file *stream)
1223 register struct symbol *sym;
1224 register int values_printed = 0;
1226 ALL_BLOCK_SYMBOLS (b, i, sym)
1228 switch (SYMBOL_CLASS (sym))
1235 for (j = 0; j < num_tabs; j++)
1236 fputs_filtered ("\t", stream);
1237 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1238 fputs_filtered (" = ", stream);
1239 print_variable_value (sym, fi, stream);
1240 fprintf_filtered (stream, "\n");
1244 /* Ignore symbols which are not locals. */
1248 return values_printed;
1251 /* Same, but print labels. */
1254 print_block_frame_labels (struct block *b, int *have_default,
1255 register struct ui_file *stream)
1258 register struct symbol *sym;
1259 register int values_printed = 0;
1261 ALL_BLOCK_SYMBOLS (b, i, sym)
1263 if (STREQ (SYMBOL_NAME (sym), "default"))
1269 if (SYMBOL_CLASS (sym) == LOC_LABEL)
1271 struct symtab_and_line sal;
1272 sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
1274 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1277 fprintf_filtered (stream, " ");
1278 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream);
1280 fprintf_filtered (stream, " in file %s, line %d\n",
1281 sal.symtab->filename, sal.line);
1284 return values_printed;
1287 /* Print on STREAM all the local variables in frame FRAME,
1288 including all the blocks active in that frame
1291 Returns 1 if the job was done,
1292 or 0 if nothing was printed because we have no info
1293 on the function running in FRAME. */
1296 print_frame_local_vars (register struct frame_info *fi, register int num_tabs,
1297 register struct ui_file *stream)
1299 register struct block *block = get_frame_block (fi, 0);
1300 register int values_printed = 0;
1304 fprintf_filtered (stream, "No symbol table info available.\n");
1310 if (print_block_frame_locals (block, fi, num_tabs, stream))
1312 /* After handling the function's top-level block, stop.
1313 Don't continue to its superblock, the block of
1314 per-file symbols. */
1315 if (BLOCK_FUNCTION (block))
1317 block = BLOCK_SUPERBLOCK (block);
1320 if (!values_printed)
1322 fprintf_filtered (stream, "No locals.\n");
1326 /* Same, but print labels. */
1329 print_frame_label_vars (register struct frame_info *fi, int this_level_only,
1330 register struct ui_file *stream)
1332 register struct blockvector *bl;
1333 register struct block *block = get_frame_block (fi, 0);
1334 register int values_printed = 0;
1335 int index, have_default = 0;
1336 char *blocks_printed;
1337 CORE_ADDR pc = fi->pc;
1341 fprintf_filtered (stream, "No symbol table info available.\n");
1345 bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
1346 blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
1347 memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
1351 CORE_ADDR end = BLOCK_END (block) - 4;
1354 if (bl != blockvector_for_pc (end, &index))
1355 error ("blockvector blotch");
1356 if (BLOCKVECTOR_BLOCK (bl, index) != block)
1357 error ("blockvector botch");
1358 last_index = BLOCKVECTOR_NBLOCKS (bl);
1361 /* Don't print out blocks that have gone by. */
1362 while (index < last_index
1363 && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
1366 while (index < last_index
1367 && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
1369 if (blocks_printed[index] == 0)
1371 if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream))
1373 blocks_printed[index] = 1;
1379 if (values_printed && this_level_only)
1382 /* After handling the function's top-level block, stop.
1383 Don't continue to its superblock, the block of
1384 per-file symbols. */
1385 if (BLOCK_FUNCTION (block))
1387 block = BLOCK_SUPERBLOCK (block);
1390 if (!values_printed && !this_level_only)
1392 fprintf_filtered (stream, "No catches.\n");
1398 locals_info (char *args, int from_tty)
1400 if (!selected_frame)
1401 error ("No frame selected.");
1402 print_frame_local_vars (selected_frame, 0, gdb_stdout);
1406 catch_info (char *ignore, int from_tty)
1408 struct symtab_and_line *sal;
1410 /* Check for target support for exception handling */
1411 sal = target_enable_exception_callback (EX_EVENT_CATCH, 1);
1414 /* Currently not handling this */
1415 /* Ideally, here we should interact with the C++ runtime
1416 system to find the list of active handlers, etc. */
1417 fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n");
1419 if (!selected_frame)
1420 error ("No frame selected.");
1425 /* Assume g++ compiled code -- old v 4.16 behaviour */
1426 if (!selected_frame)
1427 error ("No frame selected.");
1429 print_frame_label_vars (selected_frame, 0, gdb_stdout);
1434 print_frame_arg_vars (register struct frame_info *fi,
1435 register struct ui_file *stream)
1437 struct symbol *func = get_frame_function (fi);
1438 register struct block *b;
1440 register struct symbol *sym, *sym2;
1441 register int values_printed = 0;
1445 fprintf_filtered (stream, "No symbol table info available.\n");
1449 b = SYMBOL_BLOCK_VALUE (func);
1450 ALL_BLOCK_SYMBOLS (b, i, sym)
1452 switch (SYMBOL_CLASS (sym))
1458 case LOC_REGPARM_ADDR:
1459 case LOC_BASEREG_ARG:
1461 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1462 fputs_filtered (" = ", stream);
1464 /* We have to look up the symbol because arguments can have
1465 two entries (one a parameter, one a local) and the one we
1466 want is the local, which lookup_symbol will find for us.
1467 This includes gcc1 (not gcc2) on the sparc when passing a
1468 small structure and gcc2 when the argument type is float
1469 and it is passed as a double and converted to float by
1470 the prologue (in the latter case the type of the LOC_ARG
1471 symbol is double and the type of the LOC_LOCAL symbol is
1472 float). There are also LOC_ARG/LOC_REGISTER pairs which
1473 are not combined in symbol-reading. */
1475 sym2 = lookup_symbol (SYMBOL_NAME (sym),
1476 b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL);
1477 print_variable_value (sym2, fi, stream);
1478 fprintf_filtered (stream, "\n");
1482 /* Don't worry about things which aren't arguments. */
1486 if (!values_printed)
1488 fprintf_filtered (stream, "No arguments.\n");
1493 args_info (char *ignore, int from_tty)
1495 if (!selected_frame)
1496 error ("No frame selected.");
1497 print_frame_arg_vars (selected_frame, gdb_stdout);
1502 args_plus_locals_info (char *ignore, int from_tty)
1504 args_info (ignore, from_tty);
1505 locals_info (ignore, from_tty);
1509 /* Select frame FI (or NULL - to invalidate the current frame). */
1512 select_frame (struct frame_info *fi)
1514 register struct symtab *s;
1516 selected_frame = fi;
1517 /* NOTE: cagney/2002-05-04: FI can be NULL. This occures when the
1518 frame is being invalidated. */
1519 if (selected_frame_level_changed_hook)
1520 selected_frame_level_changed_hook (frame_relative_level (fi));
1522 /* FIXME: kseitz/2002-08-28: It would be nice to call
1523 selected_frame_level_changed_event right here, but due to limitations
1524 in the current interfaces, we would end up flooding UIs with events
1525 because select_frame is used extensively internally.
1527 Once we have frame-parameterized frame (and frame-related) commands,
1528 the event notification can be moved here, since this function will only
1529 be called when the users selected frame is being changed. */
1531 /* Ensure that symbols for this frame are read in. Also, determine the
1532 source language of this frame, and switch to it if desired. */
1535 s = find_pc_symtab (fi->pc);
1537 && s->language != current_language->la_language
1538 && s->language != language_unknown
1539 && language_mode == language_mode_auto)
1541 set_language (s->language);
1547 /* Select frame FI. Also print the stack frame and show the source if
1548 this is the tui version. */
1550 select_and_print_frame (struct frame_info *fi)
1555 print_stack_frame (fi, frame_relative_level (fi), 1);
1559 /* Return the symbol-block in which the selected frame is executing.
1560 Can return zero under various legitimate circumstances.
1562 If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant
1563 code address within the block returned. We use this to decide
1564 which macros are in scope. */
1567 get_selected_block (CORE_ADDR *addr_in_block)
1569 if (!target_has_stack)
1572 if (!selected_frame)
1573 return get_current_block (addr_in_block);
1574 return get_frame_block (selected_frame, addr_in_block);
1577 /* Find a frame a certain number of levels away from FRAME.
1578 LEVEL_OFFSET_PTR points to an int containing the number of levels.
1579 Positive means go to earlier frames (up); negative, the reverse.
1580 The int that contains the number of levels is counted toward
1581 zero as the frames for those levels are found.
1582 If the top or bottom frame is reached, that frame is returned,
1583 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
1584 how much farther the original request asked to go. */
1587 find_relative_frame (register struct frame_info *frame,
1588 register int *level_offset_ptr)
1590 register struct frame_info *prev;
1591 register struct frame_info *frame1;
1593 /* Going up is simple: just do get_prev_frame enough times
1594 or until initial frame is reached. */
1595 while (*level_offset_ptr > 0)
1597 prev = get_prev_frame (frame);
1600 (*level_offset_ptr)--;
1603 /* Going down is just as simple. */
1604 if (*level_offset_ptr < 0)
1606 while (*level_offset_ptr < 0)
1608 frame1 = get_next_frame (frame);
1612 (*level_offset_ptr)++;
1618 /* The "select_frame" command. With no arg, NOP.
1619 With arg LEVEL_EXP, select the frame at level LEVEL if it is a
1620 valid level. Otherwise, treat level_exp as an address expression
1621 and select it. See parse_frame_specification for more info on proper
1622 frame expressions. */
1626 select_frame_command_wrapper (char *level_exp, int from_tty)
1628 select_frame_command (level_exp, from_tty);
1632 select_frame_command (char *level_exp, int from_tty)
1634 struct frame_info *frame;
1635 int level = frame_relative_level (selected_frame);
1637 if (!target_has_stack)
1638 error ("No stack.");
1640 frame = parse_frame_specification (level_exp);
1642 select_frame (frame);
1643 if (level != frame_relative_level (selected_frame))
1644 selected_frame_level_changed_event (frame_relative_level (selected_frame));
1647 /* The "frame" command. With no arg, print selected frame briefly.
1648 With arg, behaves like select_frame and then prints the selected
1652 frame_command (char *level_exp, int from_tty)
1654 select_frame_command (level_exp, from_tty);
1655 show_and_print_stack_frame (selected_frame,
1656 frame_relative_level (selected_frame), 1);
1659 /* The XDB Compatibility command to print the current frame. */
1662 current_frame_command (char *level_exp, int from_tty)
1664 if (target_has_stack == 0 || selected_frame == 0)
1665 error ("No stack.");
1666 print_only_stack_frame (selected_frame,
1667 frame_relative_level (selected_frame), 1);
1670 /* Select the frame up one or COUNT stack levels
1671 from the previously selected frame, and print it briefly. */
1675 up_silently_base (char *count_exp)
1677 register struct frame_info *fi;
1678 int count = 1, count1;
1680 count = parse_and_eval_long (count_exp);
1683 if (target_has_stack == 0 || selected_frame == 0)
1684 error ("No stack.");
1686 fi = find_relative_frame (selected_frame, &count1);
1687 if (count1 != 0 && count_exp == 0)
1688 error ("Initial frame selected; you cannot go up.");
1690 selected_frame_level_changed_event (frame_relative_level (selected_frame));
1694 up_silently_command (char *count_exp, int from_tty)
1696 up_silently_base (count_exp);
1700 up_command (char *count_exp, int from_tty)
1702 up_silently_base (count_exp);
1703 show_and_print_stack_frame (selected_frame,
1704 frame_relative_level (selected_frame), 1);
1707 /* Select the frame down one or COUNT stack levels
1708 from the previously selected frame, and print it briefly. */
1712 down_silently_base (char *count_exp)
1714 register struct frame_info *frame;
1715 int count = -1, count1;
1717 count = -parse_and_eval_long (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);
1736 selected_frame_level_changed_event (frame_relative_level (selected_frame));
1741 down_silently_command (char *count_exp, int from_tty)
1743 down_silently_base (count_exp);
1747 down_command (char *count_exp, int from_tty)
1749 down_silently_base (count_exp);
1750 show_and_print_stack_frame (selected_frame,
1751 frame_relative_level (selected_frame), 1);
1755 return_command_wrapper (char *retval_exp, int from_tty)
1757 return_command (retval_exp, from_tty);
1761 return_command (char *retval_exp, int from_tty)
1763 struct symbol *thisfun;
1764 CORE_ADDR selected_frame_addr;
1765 CORE_ADDR selected_frame_pc;
1766 struct frame_info *frame;
1767 struct value *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.");
1808 else if (!query ("Make selected stack frame return now? "))
1809 error ("Not confirmed.");
1812 /* Do the real work. Pop until the specified frame is current. We
1813 use this method because the selected_frame is not valid after
1814 a POP_FRAME. The pc comparison makes this work even if the
1815 selected frame shares its fp with another frame. */
1817 while (selected_frame_addr != (frame = get_current_frame ())->frame
1818 || selected_frame_pc != frame->pc)
1821 /* Then pop that frame. */
1825 /* Compute the return value (if any) and store in the place
1826 for return values. */
1829 set_return_value (return_value);
1831 /* If we are at the end of a call dummy now, pop the dummy frame too. */
1833 if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (),
1834 FRAME_FP (get_current_frame ())))
1837 /* If interactive, print the frame that is now current. */
1840 frame_command ("0", 1);
1842 select_frame_command ("0", 0);
1845 /* Sets the scope to input function name, provided that the
1846 function is within the current stack frame */
1848 struct function_bounds
1850 CORE_ADDR low, high;
1853 static void func_command (char *arg, int from_tty);
1855 func_command (char *arg, int from_tty)
1857 struct frame_info *fp;
1859 struct symtabs_and_lines sals;
1862 struct function_bounds *func_bounds = (struct function_bounds *) NULL;
1864 if (arg != (char *) NULL)
1867 fp = parse_frame_specification ("0");
1868 sals = decode_line_spec (arg, 1);
1869 func_bounds = (struct function_bounds *) xmalloc (
1870 sizeof (struct function_bounds) * sals.nelts);
1871 for (i = 0; (i < sals.nelts && !found); i++)
1873 if (sals.sals[i].pc == (CORE_ADDR) 0 ||
1874 find_pc_partial_function (sals.sals[i].pc,
1876 &func_bounds[i].low,
1877 &func_bounds[i].high) == 0)
1879 func_bounds[i].low =
1880 func_bounds[i].high = (CORE_ADDR) NULL;
1886 for (i = 0; (i < sals.nelts && !found); i++)
1887 found = (fp->pc >= func_bounds[i].low &&
1888 fp->pc < func_bounds[i].high);
1892 fp = find_relative_frame (fp, &level);
1895 while (!found && level == 0);
1898 xfree (func_bounds);
1901 printf_filtered ("'%s' not within current stack frame.\n", arg);
1902 else if (fp != selected_frame)
1903 select_and_print_frame (fp);
1906 /* Gets the language of the current frame. */
1909 get_frame_language (void)
1911 register struct symtab *s;
1912 enum language flang; /* The language of the current frame */
1916 s = find_pc_symtab (selected_frame->pc);
1918 flang = s->language;
1920 flang = language_unknown;
1923 flang = language_unknown;
1929 _initialize_stack (void)
1932 backtrace_limit = 30;
1935 add_com ("return", class_stack, return_command,
1936 "Make selected stack frame return to its caller.\n\
1937 Control remains in the debugger, but when you continue\n\
1938 execution will resume in the frame above the one now selected.\n\
1939 If an argument is given, it is an expression for the value to return.");
1941 add_com ("up", class_stack, up_command,
1942 "Select and print stack frame that called this one.\n\
1943 An argument says how many frames up to go.");
1944 add_com ("up-silently", class_support, up_silently_command,
1945 "Same as the `up' command, but does not print anything.\n\
1946 This is useful in command scripts.");
1948 add_com ("down", class_stack, down_command,
1949 "Select and print stack frame called by this one.\n\
1950 An argument says how many frames down to go.");
1951 add_com_alias ("do", "down", class_stack, 1);
1952 add_com_alias ("dow", "down", class_stack, 1);
1953 add_com ("down-silently", class_support, down_silently_command,
1954 "Same as the `down' command, but does not print anything.\n\
1955 This is useful in command scripts.");
1957 add_com ("frame", class_stack, frame_command,
1958 "Select and print a stack frame.\n\
1959 With no argument, print the selected stack frame. (See also \"info frame\").\n\
1960 An argument specifies the frame to select.\n\
1961 It can be a stack frame number or the address of the frame.\n\
1962 With argument, nothing is printed if input is coming from\n\
1963 a command file or a user-defined command.");
1965 add_com_alias ("f", "frame", class_stack, 1);
1969 add_com ("L", class_stack, current_frame_command,
1970 "Print the current stack frame.\n");
1971 add_com_alias ("V", "frame", class_stack, 1);
1973 add_com ("select-frame", class_stack, select_frame_command,
1974 "Select a stack frame without printing anything.\n\
1975 An argument specifies the frame to select.\n\
1976 It can be a stack frame number or the address of the frame.\n");
1978 add_com ("backtrace", class_stack, backtrace_command,
1979 "Print backtrace of all stack frames, or innermost COUNT frames.\n\
1980 With a negative argument, print outermost -COUNT frames.\n\
1981 Use of the 'full' qualifier also prints the values of the local variables.\n");
1982 add_com_alias ("bt", "backtrace", class_stack, 0);
1985 add_com_alias ("t", "backtrace", class_stack, 0);
1986 add_com ("T", class_stack, backtrace_full_command,
1987 "Print backtrace of all stack frames, or innermost COUNT frames \n\
1988 and the values of the local variables.\n\
1989 With a negative argument, print outermost -COUNT frames.\n\
1990 Usage: T <count>\n");
1993 add_com_alias ("where", "backtrace", class_alias, 0);
1994 add_info ("stack", backtrace_command,
1995 "Backtrace of the stack, or innermost COUNT frames.");
1996 add_info_alias ("s", "stack", 1);
1997 add_info ("frame", frame_info,
1998 "All about selected stack frame, or frame at ADDR.");
1999 add_info_alias ("f", "frame", 1);
2000 add_info ("locals", locals_info,
2001 "Local variables of current stack frame.");
2002 add_info ("args", args_info,
2003 "Argument variables of current stack frame.");
2005 add_com ("l", class_info, args_plus_locals_info,
2006 "Argument and local variables of current stack frame.");
2009 add_com ("func", class_stack, func_command,
2010 "Select the stack frame that contains <func>.\nUsage: func <name>\n");
2012 add_info ("catch", catch_info,
2013 "Exceptions that can be caught in the current stack frame.");
2016 add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command,
2017 "Specify maximum number of frames for \"backtrace\" to print by default.",
2019 add_info ("backtrace-limit", backtrace_limit_info,
2020 "The maximum number of frames for \"backtrace\" to print by default.");