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"
37 #include "breakpoint.h"
43 /* Prototypes for exported functions. */
45 void args_info (char *, int);
47 void locals_info (char *, int);
49 void (*selected_frame_level_changed_hook) (int);
51 void _initialize_stack (void);
53 void return_command (char *, int);
55 /* Prototypes for local functions. */
57 static void down_command (char *, int);
59 static void down_silently_base (char *);
61 static void down_silently_command (char *, int);
63 static void up_command (char *, int);
65 static void up_silently_base (char *);
67 static void up_silently_command (char *, int);
69 void frame_command (char *, int);
71 static void current_frame_command (char *, int);
73 static void select_frame_command (char *, int);
75 static void print_frame_arg_vars (struct frame_info *, struct ui_file *);
77 static void catch_info (char *, int);
79 static void args_plus_locals_info (char *, int);
81 static void print_frame_label_vars (struct frame_info *, int,
84 static void print_frame_local_vars (struct frame_info *, int,
87 static int print_block_frame_labels (struct block *, int *,
90 static int print_block_frame_locals (struct block *,
95 static void print_frame (struct frame_info *fi,
99 struct symtab_and_line sal);
101 static void print_frame_info_base (struct frame_info *, int, int, int);
103 static void print_stack_frame_base (struct frame_info *, int, int);
105 static void backtrace_command (char *, int);
107 struct frame_info *parse_frame_specification (char *);
109 static void frame_info (char *, int);
111 extern int addressprint; /* Print addresses, or stay symbolic only? */
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 /* Zero means do things normally; we are interacting directly with the
119 user. One means print the full filename and linenumber when a
120 frame is printed, and do so in a format emacs18/emacs19.22 can
121 parse. Two means print similar annotations, but in many more
122 cases and in a slightly different syntax. */
124 int annotation_level = 0;
127 struct print_stack_frame_args
129 struct frame_info *fi;
135 static int print_stack_frame_base_stub (char *);
137 /* Show and print the frame arguments.
138 Pass the args the way catch_errors wants them. */
139 static int show_and_print_stack_frame_stub (void *args);
141 show_and_print_stack_frame_stub (void *args)
143 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
145 print_frame_info (p->fi, p->level, p->source, p->args);
150 /* Show or print the frame arguments.
151 Pass the args the way catch_errors wants them. */
152 static int print_stack_frame_stub (void *args);
154 print_stack_frame_stub (void *args)
156 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
158 print_frame_info_base (p->fi, p->level, p->source, p->args);
162 /* Print a stack frame briefly. FRAME_INFI should be the frame info
163 and LEVEL should be its level in the stack (or -1 for level not
166 /* Pass the args the way catch_errors wants them. */
168 print_stack_frame_base_stub (char *args)
170 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
172 print_frame_info_base (p->fi, p->level, p->source, p->args);
176 /* print the frame arguments to the terminal.
177 Pass the args the way catch_errors wants them. */
178 static int print_only_stack_frame_stub (void *);
180 print_only_stack_frame_stub (void *args)
182 struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
184 print_frame_info_base (p->fi, p->level, p->source, p->args);
188 /* Print a stack frame briefly. FRAME_INFI should be the frame info
189 and LEVEL should be its level in the stack (or -1 for level not defined).
190 This prints the level, the function executing, the arguments,
191 and the file name and line number.
192 If the pc is not at the beginning of the source line,
193 the actual pc is printed at the beginning.
195 If SOURCE is 1, print the source line as well.
196 If SOURCE is -1, print ONLY the source line. */
199 print_stack_frame_base (struct frame_info *fi, int level, int source)
201 struct print_stack_frame_args args;
205 args.source = source;
208 catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL);
211 /* Show and print a stack frame briefly. FRAME_INFI should be the frame info
212 and LEVEL should be its level in the stack (or -1 for level not defined).
213 This prints the level, the function executing, the arguments,
214 and the file name and line number.
215 If the pc is not at the beginning of the source line,
216 the actual pc is printed at the beginning.
218 If SOURCE is 1, print the source line as well.
219 If SOURCE is -1, print ONLY the source line. */
222 show_and_print_stack_frame (struct frame_info *fi, int level, int source)
224 struct print_stack_frame_args args;
228 args.source = source;
231 catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL);
235 /* Show or print a stack frame briefly. FRAME_INFI should be the frame info
236 and LEVEL should be its level in the stack (or -1 for level not defined).
237 This prints the level, the function executing, the arguments,
238 and the file name and line number.
239 If the pc is not at the beginning of the source line,
240 the actual pc is printed at the beginning.
242 If SOURCE is 1, print the source line as well.
243 If SOURCE is -1, print ONLY the source line. */
246 print_stack_frame (struct frame_info *fi, int level, int source)
248 struct print_stack_frame_args args;
252 args.source = source;
255 catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL);
258 /* Print a stack frame briefly. FRAME_INFI should be the frame info
259 and LEVEL should be its level in the stack (or -1 for level not defined).
260 This prints the level, the function executing, the arguments,
261 and the file name and line number.
262 If the pc is not at the beginning of the source line,
263 the actual pc is printed at the beginning.
265 If SOURCE is 1, print the source line as well.
266 If SOURCE is -1, print ONLY the source line. */
269 print_only_stack_frame (struct frame_info *fi, int level, int source)
271 struct print_stack_frame_args args;
275 args.source = source;
278 catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL);
281 struct print_args_args
284 struct frame_info *fi;
285 struct ui_file *stream;
288 static int print_args_stub (PTR);
290 /* Pass the args the way catch_errors wants them. */
293 print_args_stub (PTR args)
296 struct print_args_args *p = (struct print_args_args *) args;
298 numargs = FRAME_NUM_ARGS (p->fi);
299 print_frame_args (p->func, p->fi, numargs, p->stream);
303 /* Print information about a frame for frame "fi" at level "level".
304 Used in "where" output, also used to emit breakpoint or step
306 LEVEL is the level of the frame, or -1 if it is the
307 innermost frame but we don't want to print the level.
308 The meaning of the SOURCE argument is:
309 SRC_LINE: Print only source line
310 LOCATION: Print only location
311 LOC_AND_SRC: Print location and source line. */
314 print_frame_info_base (struct frame_info *fi, int level, int source, int args)
316 struct symtab_and_line sal;
320 if (get_frame_type (fi) == DUMMY_FRAME)
322 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
324 /* Do this regardless of SOURCE because we don't have any source
325 to list for this frame. */
328 ui_out_text (uiout, "#");
329 ui_out_field_fmt_int (uiout, 2, ui_left, "level", level);
331 annotate_function_call ();
332 printf_filtered ("<function called from gdb>\n");
333 annotate_frame_end ();
336 if ((get_frame_type (fi) == SIGTRAMP_FRAME))
338 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
340 /* Do this regardless of SOURCE because we don't have any source
341 to list for this frame. */
344 ui_out_text (uiout, "#");
345 ui_out_field_fmt_int (uiout, 2, ui_left, "level", level);
347 annotate_signal_handler_caller ();
348 printf_filtered ("<signal handler called>\n");
349 annotate_frame_end ();
353 /* If fi is not the innermost frame, that normally means that fi->pc
354 points to *after* the call instruction, and we want to get the
355 line containing the call, never the next line. But if the next
356 frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the next frame
357 was not entered as the result of a call, and we want to get the
358 line containing fi->pc. */
360 find_pc_line (fi->pc,
362 && !(get_frame_type (fi->next) == SIGTRAMP_FRAME)
363 && !(get_frame_type (fi->next) == DUMMY_FRAME));
365 location_print = (source == LOCATION
366 || source == LOC_AND_ADDRESS
367 || source == SRC_AND_LOC);
369 if (location_print || !sal.symtab)
370 print_frame (fi, level, source, args, sal);
372 source_print = (source == SRC_LINE || source == SRC_AND_LOC);
375 set_current_source_symtab_and_line (&sal);
377 if (source_print && sal.symtab)
379 struct symtab_and_line cursal;
381 int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc);
383 if (annotation_level)
384 done = identify_source_line (sal.symtab, sal.line, mid_statement,
388 if (print_frame_info_listing_hook)
389 print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0);
392 /* We used to do this earlier, but that is clearly
393 wrong. This function is used by many different
394 parts of gdb, including normal_stop in infrun.c,
395 which uses this to print out the current PC
396 when we stepi/nexti into the middle of a source
397 line. Only the command line really wants this
398 behavior. Other UIs probably would like the
399 ability to decide for themselves if it is desired. */
400 if (addressprint && mid_statement)
402 ui_out_field_core_addr (uiout, "addr", fi->pc);
403 ui_out_text (uiout, "\t");
406 print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
409 /* Make sure we have at least a default source file */
410 set_default_source_symtab_and_line ();
411 cursal = get_current_source_symtab_and_line ();
412 cursal.line = max (sal.line - get_lines_to_list () / 2, 1);
413 set_current_source_symtab_and_line (&cursal);
417 set_default_breakpoint (1, fi->pc, sal.symtab, sal.line);
419 annotate_frame_end ();
421 gdb_flush (gdb_stdout);
425 print_frame (struct frame_info *fi,
429 struct symtab_and_line sal)
432 register char *funname = 0;
433 enum language funlang = language_unknown;
434 struct ui_stream *stb;
435 struct cleanup *old_chain;
436 struct cleanup *list_chain;
438 stb = ui_out_stream_new (uiout);
439 old_chain = make_cleanup_ui_out_stream_delete (stb);
441 func = find_pc_function (frame_address_in_block (fi));
444 /* In certain pathological cases, the symtabs give the wrong
445 function (when we are in the first function in a file which
446 is compiled without debugging symbols, the previous function
447 is compiled with debugging symbols, and the "foo.o" symbol
448 that is supposed to tell us where the file with debugging symbols
449 ends has been truncated by ar because it is longer than 15
450 characters). This also occurs if the user uses asm() to create
451 a function but not stabs for it (in a file compiled -g).
453 So look in the minimal symbol tables as well, and if it comes
454 up with a larger address for the function use that instead.
455 I don't think this can ever cause any problems; there shouldn't
456 be any minimal symbols in the middle of a function; if this is
457 ever changed many parts of GDB will need to be changed (and we'll
458 create a find_pc_minimal_function or some such). */
460 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi));
462 && (SYMBOL_VALUE_ADDRESS (msymbol)
463 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
466 /* There is no particular reason to think the line number
467 information is wrong. Someone might have just put in
468 a label with asm() but left the line numbers alone. */
469 /* In this case we have no way of knowing the source file
470 and line number, so don't print them. */
473 /* We also don't know anything about the function besides
474 its address and name. */
476 funname = SYMBOL_NAME (msymbol);
477 funlang = SYMBOL_LANGUAGE (msymbol);
481 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the
482 demangled name that we already have stored in the symbol
483 table, but we stored a version with DMGL_PARAMS turned
484 on, and here we don't want to display parameters. So call
485 the demangler again, with DMGL_ANSI only. (Yes, I know
486 that printf_symbol_filtered() will again try to demangle
487 the name on the fly, but the issue is that if
488 cplus_demangle() fails here, it'll fail there too. So we
489 want to catch the failure ("demangled==NULL" case below)
490 here, while we still have our hands on the function
493 funname = SYMBOL_NAME (func);
494 funlang = SYMBOL_LANGUAGE (func);
495 if (funlang == language_cplus)
497 demangled = cplus_demangle (funname, DMGL_ANSI);
498 if (demangled == NULL)
499 /* If the demangler fails, try the demangled name from
500 the symbol table. This'll have parameters, but
501 that's preferable to diplaying a mangled name. */
502 funname = SYMBOL_SOURCE_NAME (func);
508 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi));
511 funname = SYMBOL_NAME (msymbol);
512 funlang = SYMBOL_LANGUAGE (msymbol);
516 annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
518 list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
522 ui_out_text (uiout, "#");
523 ui_out_field_fmt_int (uiout, 2, ui_left, "level", level);
526 if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS)
528 annotate_frame_address ();
529 ui_out_field_core_addr (uiout, "addr", fi->pc);
530 annotate_frame_address_end ();
531 ui_out_text (uiout, " in ");
533 annotate_frame_function_name ();
534 fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang,
536 ui_out_field_stream (uiout, "func", stb);
537 ui_out_wrap_hint (uiout, " ");
538 annotate_frame_args ();
540 ui_out_text (uiout, " (");
543 struct print_args_args args;
544 struct cleanup *args_list_chain;
547 args.stream = gdb_stdout;
548 args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args");
549 catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL);
550 /* FIXME: args must be a list. If one argument is a string it will
551 have " that will not be properly escaped. */
552 /* Invoke ui_out_tuple_end. */
553 do_cleanups (args_list_chain);
556 ui_out_text (uiout, ")");
557 if (sal.symtab && sal.symtab->filename)
559 annotate_frame_source_begin ();
560 ui_out_wrap_hint (uiout, " ");
561 ui_out_text (uiout, " at ");
562 annotate_frame_source_file ();
563 ui_out_field_string (uiout, "file", sal.symtab->filename);
564 annotate_frame_source_file_end ();
565 ui_out_text (uiout, ":");
566 annotate_frame_source_line ();
567 ui_out_field_int (uiout, "line", sal.line);
568 annotate_frame_source_end ();
572 if (!funname || (!sal.symtab || !sal.symtab->filename))
574 char *lib = PC_SOLIB (fi->pc);
577 annotate_frame_where ();
578 ui_out_wrap_hint (uiout, " ");
579 ui_out_text (uiout, " from ");
580 ui_out_field_string (uiout, "from", lib);
583 #endif /* PC_SOLIB */
585 /* do_cleanups will call ui_out_tuple_end() for us. */
586 do_cleanups (list_chain);
587 ui_out_text (uiout, "\n");
588 do_cleanups (old_chain);
592 /* Show or print the frame info. If this is the tui, it will be shown in
593 the source display */
595 print_frame_info (struct frame_info *fi, register int level, int source,
598 print_frame_info_base (fi, level, source, args);
601 /* Show the frame info. If this is the tui, it will be shown in
602 the source display otherwise, nothing is done */
604 show_stack_frame (struct frame_info *fi)
609 /* Read a frame specification in whatever the appropriate format is.
610 Call error() if the specification is in any way invalid (i.e.
611 this function never returns NULL). */
614 parse_frame_specification (char *frame_exp)
618 CORE_ADDR args[MAXARGS];
623 char *addr_string, *p;
624 struct cleanup *tmp_cleanup;
626 while (*frame_exp == ' ')
631 if (numargs > MAXARGS)
632 error ("Too many args in frame specification");
633 /* Parse an argument. */
634 for (p = frame_exp; *p && *p != ' '; p++)
636 addr_string = savestring (frame_exp, p - frame_exp);
641 tmp_cleanup = make_cleanup (xfree, addr_string);
643 /* NOTE: we call parse_and_eval and then both
644 value_as_long and value_as_address rather than calling
645 parse_and_eval_long and parse_and_eval_address because
646 of the issue of potential side effects from evaluating
648 vp = parse_and_eval (addr_string);
650 level = value_as_long (vp);
652 args[numargs++] = value_as_address (vp);
653 do_cleanups (tmp_cleanup);
656 /* Skip spaces, move to possible next arg. */
666 if (selected_frame == NULL)
667 error ("No selected frame.");
668 return selected_frame;
672 struct frame_info *fid =
673 find_relative_frame (get_current_frame (), &level);
674 struct frame_info *tfid;
677 /* find_relative_frame was successful */
680 /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications
681 take at least 2 addresses. It is important to detect this case
682 here so that "frame 100" does not give a confusing error message
683 like "frame specification requires two addresses". This of course
684 does not solve the "frame 100" problem for machines on which
685 a frame specification can be made with one address. To solve
686 that, we need a new syntax for a specifying a frame by address.
687 I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for
688 two args, etc.), but people might think that is too much typing,
689 so I guess *0x23,0x45 would be a possible alternative (commas
690 really should be used instead of spaces to delimit; using spaces
691 normally works in an expression). */
692 #ifdef SETUP_ARBITRARY_FRAME
693 error ("No frame %s", paddr_d (args[0]));
696 /* If (s)he specifies the frame with an address, he deserves what
697 (s)he gets. Still, give the highest one that matches. */
699 for (fid = get_current_frame ();
700 fid && fid->frame != args[0];
701 fid = get_prev_frame (fid))
705 while ((tfid = get_prev_frame (fid)) &&
706 (tfid->frame == args[0]))
709 /* We couldn't identify the frame as an existing frame, but
710 perhaps we can create one with a single argument. */
714 #ifdef SETUP_ARBITRARY_FRAME
715 return SETUP_ARBITRARY_FRAME (numargs, args);
717 /* Usual case. Do it here rather than have everyone supply
718 a SETUP_ARBITRARY_FRAME that does this. */
720 return create_new_frame (args[0], 0);
721 error ("Too many args in frame specification");
728 /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except
729 that if it is unsure about the answer, it returns 0
730 instead of guessing (this happens on the VAX and i960, for example).
732 On most machines, we never have to guess about the args address,
733 so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */
734 #if !defined (FRAME_ARGS_ADDRESS_CORRECT)
735 #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS
738 /* Print verbosely the selected frame or the frame at address ADDR.
739 This means absolutely all information in the frame is printed. */
742 frame_info (char *addr_exp, int from_tty)
744 struct frame_info *fi;
745 struct symtab_and_line sal;
748 struct frame_info *calling_frame_info;
749 int i, count, numregs;
751 enum language funlang = language_unknown;
753 if (!target_has_stack)
756 fi = parse_frame_specification (addr_exp);
758 error ("Invalid frame specified.");
760 sal = find_pc_line (fi->pc,
762 && !(get_frame_type (fi->next) == SIGTRAMP_FRAME)
763 && !(get_frame_type (fi->next) == DUMMY_FRAME));
764 func = get_frame_function (fi);
765 s = find_pc_symtab (fi->pc);
768 /* I'd like to use SYMBOL_SOURCE_NAME() here, to display
769 * the demangled name that we already have stored in
770 * the symbol table, but we stored a version with
771 * DMGL_PARAMS turned on, and here we don't want
772 * to display parameters. So call the demangler again,
773 * with DMGL_ANSI only. RT
774 * (Yes, I know that printf_symbol_filtered() will
775 * again try to demangle the name on the fly, but
776 * the issue is that if cplus_demangle() fails here,
777 * it'll fail there too. So we want to catch the failure
778 * ("demangled==NULL" case below) here, while we still
779 * have our hands on the function symbol.)
782 funname = SYMBOL_NAME (func);
783 funlang = SYMBOL_LANGUAGE (func);
784 if (funlang == language_cplus)
786 demangled = cplus_demangle (funname, DMGL_ANSI);
787 /* If the demangler fails, try the demangled name
788 * from the symbol table. This'll have parameters,
789 * but that's preferable to diplaying a mangled name.
791 if (demangled == NULL)
792 funname = SYMBOL_SOURCE_NAME (func);
797 register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
800 funname = SYMBOL_NAME (msymbol);
801 funlang = SYMBOL_LANGUAGE (msymbol);
804 calling_frame_info = get_prev_frame (fi);
806 if (!addr_exp && frame_relative_level (selected_frame) >= 0)
808 printf_filtered ("Stack level %d, frame at ",
809 frame_relative_level (selected_frame));
810 print_address_numeric (fi->frame, 1, gdb_stdout);
811 printf_filtered (":\n");
815 printf_filtered ("Stack frame at ");
816 print_address_numeric (fi->frame, 1, gdb_stdout);
817 printf_filtered (":\n");
819 printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM));
820 print_address_numeric (fi->pc, 1, gdb_stdout);
825 printf_filtered (" in ");
826 fprintf_symbol_filtered (gdb_stdout, funname, funlang,
827 DMGL_ANSI | DMGL_PARAMS);
831 printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line);
832 puts_filtered ("; ");
834 printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM));
835 print_address_numeric (frame_pc_unwind (fi), 1, gdb_stdout);
836 printf_filtered ("\n");
840 frameless = FRAMELESS_FUNCTION_INVOCATION (fi);
842 printf_filtered (" (FRAMELESS),");
845 if (calling_frame_info)
847 printf_filtered (" called by frame at ");
848 print_address_numeric (calling_frame_info->frame, 1, gdb_stdout);
850 if (fi->next && calling_frame_info)
855 printf_filtered (" caller of frame at ");
856 print_address_numeric (fi->next->frame, 1, gdb_stdout);
858 if (fi->next || calling_frame_info)
859 puts_filtered ("\n");
861 printf_filtered (" source language %s.\n", language_str (s->language));
863 #ifdef PRINT_EXTRA_FRAME_INFO
864 PRINT_EXTRA_FRAME_INFO (fi);
868 /* Address of the argument list for this frame, or 0. */
869 CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi);
870 /* Number of args for this frame, or -1 if unknown. */
874 printf_filtered (" Arglist at unknown address.\n");
877 printf_filtered (" Arglist at ");
878 print_address_numeric (arg_list, 1, gdb_stdout);
879 printf_filtered (",");
881 numargs = FRAME_NUM_ARGS (fi);
883 puts_filtered (" args: ");
884 else if (numargs == 0)
885 puts_filtered (" no args.");
886 else if (numargs == 1)
887 puts_filtered (" 1 arg: ");
889 printf_filtered (" %d args: ", numargs);
890 print_frame_args (func, fi, numargs, gdb_stdout);
891 puts_filtered ("\n");
895 /* Address of the local variables for this frame, or 0. */
896 CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi);
899 printf_filtered (" Locals at unknown address,");
902 printf_filtered (" Locals at ");
903 print_address_numeric (arg_list, 1, gdb_stdout);
904 printf_filtered (",");
908 if (fi->saved_regs == NULL)
909 FRAME_INIT_SAVED_REGS (fi);
910 /* Print as much information as possible on the location of all the
921 /* The sp is special; what's displayed isn't the save address, but
922 the value of the previous frame's sp. This is a legacy thing,
923 at one stage the frame cached the previous frame's SP instead
924 of its address, hence it was easiest to just display the cached
928 /* Find out the location of the saved stack pointer with out
929 actually evaluating it. */
930 frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr,
932 if (!optimized && lval == not_lval)
934 void *value = alloca (MAX_REGISTER_RAW_SIZE);
936 frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr,
938 sp = extract_address (value, REGISTER_RAW_SIZE (SP_REGNUM));
939 printf_filtered (" Previous frame's sp is ");
940 print_address_numeric (sp, 1, gdb_stdout);
941 printf_filtered ("\n");
944 else if (!optimized && lval == lval_memory)
946 printf_filtered (" Previous frame's sp at ");
947 print_address_numeric (addr, 1, gdb_stdout);
948 printf_filtered ("\n");
951 else if (!optimized && lval == lval_register)
953 printf_filtered (" Previous frame's sp in %s\n",
954 REGISTER_NAME (realnum));
957 /* else keep quiet. */
961 numregs = NUM_REGS + NUM_PSEUDO_REGS;
962 for (i = 0; i < numregs; i++)
965 /* Find out the location of the saved register without
966 fetching the corresponding value. */
967 frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum,
969 /* For moment, only display registers that were saved on the
971 if (!optimized && lval == lval_memory)
974 puts_filtered (" Saved registers:\n ");
978 printf_filtered (" %s at ", REGISTER_NAME (i));
979 print_address_numeric (addr, 1, gdb_stdout);
983 if (count || need_nl)
984 puts_filtered ("\n");
989 /* Set a limit on the number of frames printed by default in a
992 static int backtrace_limit;
995 set_backtrace_limit_command (char *count_exp, int from_tty)
997 int count = parse_and_eval_long (count_exp);
1000 error ("Negative argument not meaningful as backtrace limit.");
1002 backtrace_limit = count;
1006 backtrace_limit_info (char *arg, int from_tty)
1009 error ("\"Info backtrace-limit\" takes no arguments.");
1011 printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit);
1015 /* Print briefly all stack frames or just the innermost COUNT frames. */
1017 static void backtrace_command_1 (char *count_exp, int show_locals,
1020 backtrace_command_1 (char *count_exp, int show_locals, int from_tty)
1022 struct frame_info *fi;
1025 register struct frame_info *trailing;
1026 register int trailing_level;
1028 if (!target_has_stack)
1029 error ("No stack.");
1031 /* The following code must do two things. First, it must
1032 set the variable TRAILING to the frame from which we should start
1033 printing. Second, it must set the variable count to the number
1034 of frames which we should print, or -1 if all of them. */
1035 trailing = get_current_frame ();
1037 /* The target can be in a state where there is no valid frames
1038 (e.g., just connected). */
1039 if (trailing == NULL)
1040 error ("No stack.");
1045 count = parse_and_eval_long (count_exp);
1048 struct frame_info *current;
1053 while (current && count--)
1056 current = get_prev_frame (current);
1059 /* Will stop when CURRENT reaches the top of the stack. TRAILING
1060 will be COUNT below it. */
1064 trailing = get_prev_frame (trailing);
1065 current = get_prev_frame (current);
1077 struct partial_symtab *ps;
1079 /* Read in symbols for all of the frames. Need to do this in
1080 a separate pass so that "Reading in symbols for xxx" messages
1081 don't screw up the appearance of the backtrace. Also
1082 if people have strong opinions against reading symbols for
1083 backtrace this may have to be an option. */
1087 fi = get_prev_frame (fi))
1090 ps = find_pc_psymtab (frame_address_in_block (fi));
1092 PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */
1096 for (i = 0, fi = trailing;
1098 i++, fi = get_prev_frame (fi))
1102 /* Don't use print_stack_frame; if an error() occurs it probably
1103 means further attempts to backtrace would fail (on the other
1104 hand, perhaps the code does or could be fixed to make sure
1105 the frame->prev field gets set to NULL in that case). */
1106 print_frame_info_base (fi, trailing_level + i, 0, 1);
1108 print_frame_local_vars (fi, 1, gdb_stdout);
1111 /* If we've stopped before the end, mention that. */
1113 printf_filtered ("(More stack frames follow...)\n");
1117 backtrace_command (char *arg, int from_tty)
1119 struct cleanup *old_chain = (struct cleanup *) NULL;
1120 char **argv = (char **) NULL;
1121 int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0;
1124 if (arg != (char *) NULL)
1128 argv = buildargv (arg);
1129 old_chain = make_cleanup_freeargv (argv);
1131 for (i = 0; (argv[i] != (char *) NULL); i++)
1135 for (j = 0; (j < strlen (argv[i])); j++)
1136 argv[i][j] = tolower (argv[i][j]);
1138 if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full"))
1139 argIndicatingFullTrace = argc;
1143 totArgLen += strlen (argv[i]);
1147 if (argIndicatingFullTrace >= 0)
1151 argPtr = (char *) xmalloc (totArgLen + 1);
1156 memset (argPtr, 0, totArgLen + 1);
1157 for (i = 0; (i < (argc + 1)); i++)
1159 if (i != argIndicatingFullTrace)
1161 strcat (argPtr, argv[i]);
1162 strcat (argPtr, " ");
1168 argPtr = (char *) NULL;
1172 backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty);
1174 if (argIndicatingFullTrace >= 0 && totArgLen > 0)
1178 do_cleanups (old_chain);
1181 static void backtrace_full_command (char *arg, int from_tty);
1183 backtrace_full_command (char *arg, int from_tty)
1185 backtrace_command_1 (arg, 1, from_tty);
1189 /* Print the local variables of a block B active in FRAME.
1190 Return 1 if any variables were printed; 0 otherwise. */
1193 print_block_frame_locals (struct block *b, register struct frame_info *fi,
1194 int num_tabs, register struct ui_file *stream)
1197 register struct symbol *sym;
1198 register int values_printed = 0;
1200 ALL_BLOCK_SYMBOLS (b, i, sym)
1202 switch (SYMBOL_CLASS (sym))
1209 for (j = 0; j < num_tabs; j++)
1210 fputs_filtered ("\t", stream);
1211 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1212 fputs_filtered (" = ", stream);
1213 print_variable_value (sym, fi, stream);
1214 fprintf_filtered (stream, "\n");
1218 /* Ignore symbols which are not locals. */
1222 return values_printed;
1225 /* Same, but print labels. */
1228 print_block_frame_labels (struct block *b, int *have_default,
1229 register struct ui_file *stream)
1232 register struct symbol *sym;
1233 register int values_printed = 0;
1235 ALL_BLOCK_SYMBOLS (b, i, sym)
1237 if (STREQ (SYMBOL_NAME (sym), "default"))
1243 if (SYMBOL_CLASS (sym) == LOC_LABEL)
1245 struct symtab_and_line sal;
1246 sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
1248 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1251 fprintf_filtered (stream, " ");
1252 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream);
1254 fprintf_filtered (stream, " in file %s, line %d\n",
1255 sal.symtab->filename, sal.line);
1258 return values_printed;
1261 /* Print on STREAM all the local variables in frame FRAME,
1262 including all the blocks active in that frame
1265 Returns 1 if the job was done,
1266 or 0 if nothing was printed because we have no info
1267 on the function running in FRAME. */
1270 print_frame_local_vars (register struct frame_info *fi, register int num_tabs,
1271 register struct ui_file *stream)
1273 register struct block *block = get_frame_block (fi, 0);
1274 register int values_printed = 0;
1278 fprintf_filtered (stream, "No symbol table info available.\n");
1284 if (print_block_frame_locals (block, fi, num_tabs, stream))
1286 /* After handling the function's top-level block, stop.
1287 Don't continue to its superblock, the block of
1288 per-file symbols. */
1289 if (BLOCK_FUNCTION (block))
1291 block = BLOCK_SUPERBLOCK (block);
1294 if (!values_printed)
1296 fprintf_filtered (stream, "No locals.\n");
1300 /* Same, but print labels. */
1303 print_frame_label_vars (register struct frame_info *fi, int this_level_only,
1304 register struct ui_file *stream)
1306 register struct blockvector *bl;
1307 register struct block *block = get_frame_block (fi, 0);
1308 register int values_printed = 0;
1309 int index, have_default = 0;
1310 char *blocks_printed;
1311 CORE_ADDR pc = fi->pc;
1315 fprintf_filtered (stream, "No symbol table info available.\n");
1319 bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
1320 blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
1321 memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
1325 CORE_ADDR end = BLOCK_END (block) - 4;
1328 if (bl != blockvector_for_pc (end, &index))
1329 error ("blockvector blotch");
1330 if (BLOCKVECTOR_BLOCK (bl, index) != block)
1331 error ("blockvector botch");
1332 last_index = BLOCKVECTOR_NBLOCKS (bl);
1335 /* Don't print out blocks that have gone by. */
1336 while (index < last_index
1337 && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
1340 while (index < last_index
1341 && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
1343 if (blocks_printed[index] == 0)
1345 if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream))
1347 blocks_printed[index] = 1;
1353 if (values_printed && this_level_only)
1356 /* After handling the function's top-level block, stop.
1357 Don't continue to its superblock, the block of
1358 per-file symbols. */
1359 if (BLOCK_FUNCTION (block))
1361 block = BLOCK_SUPERBLOCK (block);
1364 if (!values_printed && !this_level_only)
1366 fprintf_filtered (stream, "No catches.\n");
1372 locals_info (char *args, int from_tty)
1374 if (!selected_frame)
1375 error ("No frame selected.");
1376 print_frame_local_vars (selected_frame, 0, gdb_stdout);
1380 catch_info (char *ignore, int from_tty)
1382 struct symtab_and_line *sal;
1384 /* Check for target support for exception handling */
1385 sal = target_enable_exception_callback (EX_EVENT_CATCH, 1);
1388 /* Currently not handling this */
1389 /* Ideally, here we should interact with the C++ runtime
1390 system to find the list of active handlers, etc. */
1391 fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n");
1393 if (!selected_frame)
1394 error ("No frame selected.");
1399 /* Assume g++ compiled code -- old v 4.16 behaviour */
1400 if (!selected_frame)
1401 error ("No frame selected.");
1403 print_frame_label_vars (selected_frame, 0, gdb_stdout);
1408 print_frame_arg_vars (register struct frame_info *fi,
1409 register struct ui_file *stream)
1411 struct symbol *func = get_frame_function (fi);
1412 register struct block *b;
1414 register struct symbol *sym, *sym2;
1415 register int values_printed = 0;
1419 fprintf_filtered (stream, "No symbol table info available.\n");
1423 b = SYMBOL_BLOCK_VALUE (func);
1424 ALL_BLOCK_SYMBOLS (b, i, sym)
1426 switch (SYMBOL_CLASS (sym))
1432 case LOC_REGPARM_ADDR:
1433 case LOC_BASEREG_ARG:
1435 fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
1436 fputs_filtered (" = ", stream);
1438 /* We have to look up the symbol because arguments can have
1439 two entries (one a parameter, one a local) and the one we
1440 want is the local, which lookup_symbol will find for us.
1441 This includes gcc1 (not gcc2) on the sparc when passing a
1442 small structure and gcc2 when the argument type is float
1443 and it is passed as a double and converted to float by
1444 the prologue (in the latter case the type of the LOC_ARG
1445 symbol is double and the type of the LOC_LOCAL symbol is
1446 float). There are also LOC_ARG/LOC_REGISTER pairs which
1447 are not combined in symbol-reading. */
1449 sym2 = lookup_symbol (SYMBOL_NAME (sym),
1450 b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL);
1451 print_variable_value (sym2, fi, stream);
1452 fprintf_filtered (stream, "\n");
1456 /* Don't worry about things which aren't arguments. */
1460 if (!values_printed)
1462 fprintf_filtered (stream, "No arguments.\n");
1467 args_info (char *ignore, int from_tty)
1469 if (!selected_frame)
1470 error ("No frame selected.");
1471 print_frame_arg_vars (selected_frame, gdb_stdout);
1476 args_plus_locals_info (char *ignore, int from_tty)
1478 args_info (ignore, from_tty);
1479 locals_info (ignore, from_tty);
1483 /* Select frame FI (or NULL - to invalidate the current frame). */
1486 select_frame (struct frame_info *fi)
1488 register struct symtab *s;
1490 selected_frame = fi;
1491 /* NOTE: cagney/2002-05-04: FI can be NULL. This occures when the
1492 frame is being invalidated. */
1493 if (selected_frame_level_changed_hook)
1494 selected_frame_level_changed_hook (frame_relative_level (fi));
1496 /* FIXME: kseitz/2002-08-28: It would be nice to call
1497 selected_frame_level_changed_event right here, but due to limitations
1498 in the current interfaces, we would end up flooding UIs with events
1499 because select_frame is used extensively internally.
1501 Once we have frame-parameterized frame (and frame-related) commands,
1502 the event notification can be moved here, since this function will only
1503 be called when the users selected frame is being changed. */
1505 /* Ensure that symbols for this frame are read in. Also, determine the
1506 source language of this frame, and switch to it if desired. */
1509 s = find_pc_symtab (fi->pc);
1511 && s->language != current_language->la_language
1512 && s->language != language_unknown
1513 && language_mode == language_mode_auto)
1515 set_language (s->language);
1521 /* Select frame FI. Also print the stack frame and show the source if
1522 this is the tui version. */
1524 select_and_print_frame (struct frame_info *fi)
1529 print_stack_frame (fi, frame_relative_level (fi), 1);
1533 /* Return the symbol-block in which the selected frame is executing.
1534 Can return zero under various legitimate circumstances.
1536 If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant
1537 code address within the block returned. We use this to decide
1538 which macros are in scope. */
1541 get_selected_block (CORE_ADDR *addr_in_block)
1543 if (!target_has_stack)
1546 /* NOTE: cagney/2002-11-28: Why go to all this effort to not create
1547 a selected/current frame? Perhaphs this function is called,
1548 indirectly, by WFI in "infrun.c" where avoiding the creation of
1549 an inner most frame is very important (it slows down single
1550 step). I suspect, though that this was true in the deep dark
1551 past but is no longer the case. A mindless look at all the
1552 callers tends to support this theory. I think we should be able
1553 to assume that there is always a selcted frame. */
1554 /* gdb_assert (selected_frame != NULL); So, do you feel lucky? */
1555 if (!selected_frame)
1557 CORE_ADDR pc = read_pc ();
1558 if (addr_in_block != NULL)
1559 *addr_in_block = pc;
1560 return block_for_pc (pc);
1562 return get_frame_block (selected_frame, addr_in_block);
1565 /* Find a frame a certain number of levels away from FRAME.
1566 LEVEL_OFFSET_PTR points to an int containing the number of levels.
1567 Positive means go to earlier frames (up); negative, the reverse.
1568 The int that contains the number of levels is counted toward
1569 zero as the frames for those levels are found.
1570 If the top or bottom frame is reached, that frame is returned,
1571 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
1572 how much farther the original request asked to go. */
1575 find_relative_frame (register struct frame_info *frame,
1576 register int *level_offset_ptr)
1578 register struct frame_info *prev;
1579 register struct frame_info *frame1;
1581 /* Going up is simple: just do get_prev_frame enough times
1582 or until initial frame is reached. */
1583 while (*level_offset_ptr > 0)
1585 prev = get_prev_frame (frame);
1588 (*level_offset_ptr)--;
1591 /* Going down is just as simple. */
1592 if (*level_offset_ptr < 0)
1594 while (*level_offset_ptr < 0)
1596 frame1 = get_next_frame (frame);
1600 (*level_offset_ptr)++;
1606 /* The "select_frame" command. With no arg, NOP.
1607 With arg LEVEL_EXP, select the frame at level LEVEL if it is a
1608 valid level. Otherwise, treat level_exp as an address expression
1609 and select it. See parse_frame_specification for more info on proper
1610 frame expressions. */
1614 select_frame_command_wrapper (char *level_exp, int from_tty)
1616 select_frame_command (level_exp, from_tty);
1620 select_frame_command (char *level_exp, int from_tty)
1622 struct frame_info *frame;
1623 int level = frame_relative_level (selected_frame);
1625 if (!target_has_stack)
1626 error ("No stack.");
1628 frame = parse_frame_specification (level_exp);
1630 select_frame (frame);
1631 if (level != frame_relative_level (selected_frame))
1632 selected_frame_level_changed_event (frame_relative_level (selected_frame));
1635 /* The "frame" command. With no arg, print selected frame briefly.
1636 With arg, behaves like select_frame and then prints the selected
1640 frame_command (char *level_exp, int from_tty)
1642 select_frame_command (level_exp, from_tty);
1643 show_and_print_stack_frame (selected_frame,
1644 frame_relative_level (selected_frame), 1);
1647 /* The XDB Compatibility command to print the current frame. */
1650 current_frame_command (char *level_exp, int from_tty)
1652 if (target_has_stack == 0 || selected_frame == 0)
1653 error ("No stack.");
1654 print_only_stack_frame (selected_frame,
1655 frame_relative_level (selected_frame), 1);
1658 /* Select the frame up one or COUNT stack levels
1659 from the previously selected frame, and print it briefly. */
1663 up_silently_base (char *count_exp)
1665 register struct frame_info *fi;
1666 int count = 1, count1;
1668 count = parse_and_eval_long (count_exp);
1671 if (target_has_stack == 0 || selected_frame == 0)
1672 error ("No stack.");
1674 fi = find_relative_frame (selected_frame, &count1);
1675 if (count1 != 0 && count_exp == 0)
1676 error ("Initial frame selected; you cannot go up.");
1678 selected_frame_level_changed_event (frame_relative_level (selected_frame));
1682 up_silently_command (char *count_exp, int from_tty)
1684 up_silently_base (count_exp);
1688 up_command (char *count_exp, int from_tty)
1690 up_silently_base (count_exp);
1691 show_and_print_stack_frame (selected_frame,
1692 frame_relative_level (selected_frame), 1);
1695 /* Select the frame down one or COUNT stack levels
1696 from the previously selected frame, and print it briefly. */
1700 down_silently_base (char *count_exp)
1702 register struct frame_info *frame;
1703 int count = -1, count1;
1705 count = -parse_and_eval_long (count_exp);
1708 if (target_has_stack == 0 || selected_frame == 0)
1709 error ("No stack.");
1711 frame = find_relative_frame (selected_frame, &count1);
1712 if (count1 != 0 && count_exp == 0)
1715 /* We only do this if count_exp is not specified. That way "down"
1716 means to really go down (and let me know if that is
1717 impossible), but "down 9999" can be used to mean go all the way
1718 down without getting an error. */
1720 error ("Bottom (i.e., innermost) frame selected; you cannot go down.");
1723 select_frame (frame);
1724 selected_frame_level_changed_event (frame_relative_level (selected_frame));
1729 down_silently_command (char *count_exp, int from_tty)
1731 down_silently_base (count_exp);
1735 down_command (char *count_exp, int from_tty)
1737 down_silently_base (count_exp);
1738 show_and_print_stack_frame (selected_frame,
1739 frame_relative_level (selected_frame), 1);
1743 return_command (char *retval_exp, int from_tty)
1745 struct symbol *thisfun;
1746 CORE_ADDR selected_frame_addr;
1747 CORE_ADDR selected_frame_pc;
1748 struct frame_info *frame;
1749 struct value *return_value = NULL;
1751 if (selected_frame == NULL)
1752 error ("No selected frame.");
1753 thisfun = get_frame_function (selected_frame);
1754 selected_frame_addr = get_frame_base (selected_frame);
1755 selected_frame_pc = selected_frame->pc;
1757 /* Compute the return value (if any -- possibly getting errors here). */
1761 struct type *return_type = NULL;
1763 return_value = parse_and_eval (retval_exp);
1765 /* Cast return value to the return type of the function. */
1766 if (thisfun != NULL)
1767 return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun));
1768 if (return_type == NULL)
1769 return_type = builtin_type_int;
1770 return_value = value_cast (return_type, return_value);
1772 /* Make sure we have fully evaluated it, since
1773 it might live in the stack frame we're about to pop. */
1774 if (VALUE_LAZY (return_value))
1775 value_fetch_lazy (return_value);
1778 /* If interactive, require confirmation. */
1784 if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun)))
1786 error ("Not confirmed.");
1790 else if (!query ("Make selected stack frame return now? "))
1791 error ("Not confirmed.");
1794 /* Do the real work. Pop until the specified frame is current. We
1795 use this method because the selected_frame is not valid after
1796 a POP_FRAME. The pc comparison makes this work even if the
1797 selected frame shares its fp with another frame. */
1799 while (selected_frame_addr != (frame = get_current_frame ())->frame
1800 || selected_frame_pc != frame->pc)
1803 /* Then pop that frame. */
1807 /* Compute the return value (if any) and store in the place
1808 for return values. */
1811 set_return_value (return_value);
1813 /* If we are at the end of a call dummy now, pop the dummy frame too. */
1815 if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (),
1816 get_frame_base (get_current_frame ())))
1819 /* If interactive, print the frame that is now current. */
1822 frame_command ("0", 1);
1824 select_frame_command ("0", 0);
1827 /* Sets the scope to input function name, provided that the
1828 function is within the current stack frame */
1830 struct function_bounds
1832 CORE_ADDR low, high;
1835 static void func_command (char *arg, int from_tty);
1837 func_command (char *arg, int from_tty)
1839 struct frame_info *fp;
1841 struct symtabs_and_lines sals;
1844 struct function_bounds *func_bounds = (struct function_bounds *) NULL;
1846 if (arg != (char *) NULL)
1849 fp = parse_frame_specification ("0");
1850 sals = decode_line_spec (arg, 1);
1851 func_bounds = (struct function_bounds *) xmalloc (
1852 sizeof (struct function_bounds) * sals.nelts);
1853 for (i = 0; (i < sals.nelts && !found); i++)
1855 if (sals.sals[i].pc == (CORE_ADDR) 0 ||
1856 find_pc_partial_function (sals.sals[i].pc,
1858 &func_bounds[i].low,
1859 &func_bounds[i].high) == 0)
1861 func_bounds[i].low =
1862 func_bounds[i].high = (CORE_ADDR) NULL;
1868 for (i = 0; (i < sals.nelts && !found); i++)
1869 found = (fp->pc >= func_bounds[i].low &&
1870 fp->pc < func_bounds[i].high);
1874 fp = find_relative_frame (fp, &level);
1877 while (!found && level == 0);
1880 xfree (func_bounds);
1883 printf_filtered ("'%s' not within current stack frame.\n", arg);
1884 else if (fp != selected_frame)
1885 select_and_print_frame (fp);
1888 /* Gets the language of the current frame. */
1891 get_frame_language (void)
1893 register struct symtab *s;
1894 enum language flang; /* The language of the current frame */
1898 s = find_pc_symtab (selected_frame->pc);
1900 flang = s->language;
1902 flang = language_unknown;
1905 flang = language_unknown;
1911 _initialize_stack (void)
1914 backtrace_limit = 30;
1917 add_com ("return", class_stack, return_command,
1918 "Make selected stack frame return to its caller.\n\
1919 Control remains in the debugger, but when you continue\n\
1920 execution will resume in the frame above the one now selected.\n\
1921 If an argument is given, it is an expression for the value to return.");
1923 add_com ("up", class_stack, up_command,
1924 "Select and print stack frame that called this one.\n\
1925 An argument says how many frames up to go.");
1926 add_com ("up-silently", class_support, up_silently_command,
1927 "Same as the `up' command, but does not print anything.\n\
1928 This is useful in command scripts.");
1930 add_com ("down", class_stack, down_command,
1931 "Select and print stack frame called by this one.\n\
1932 An argument says how many frames down to go.");
1933 add_com_alias ("do", "down", class_stack, 1);
1934 add_com_alias ("dow", "down", class_stack, 1);
1935 add_com ("down-silently", class_support, down_silently_command,
1936 "Same as the `down' command, but does not print anything.\n\
1937 This is useful in command scripts.");
1939 add_com ("frame", class_stack, frame_command,
1940 "Select and print a stack frame.\n\
1941 With no argument, print the selected stack frame. (See also \"info frame\").\n\
1942 An argument specifies the frame to select.\n\
1943 It can be a stack frame number or the address of the frame.\n\
1944 With argument, nothing is printed if input is coming from\n\
1945 a command file or a user-defined command.");
1947 add_com_alias ("f", "frame", class_stack, 1);
1951 add_com ("L", class_stack, current_frame_command,
1952 "Print the current stack frame.\n");
1953 add_com_alias ("V", "frame", class_stack, 1);
1955 add_com ("select-frame", class_stack, select_frame_command,
1956 "Select a stack frame without printing anything.\n\
1957 An argument specifies the frame to select.\n\
1958 It can be a stack frame number or the address of the frame.\n");
1960 add_com ("backtrace", class_stack, backtrace_command,
1961 "Print backtrace of all stack frames, or innermost COUNT frames.\n\
1962 With a negative argument, print outermost -COUNT frames.\n\
1963 Use of the 'full' qualifier also prints the values of the local variables.\n");
1964 add_com_alias ("bt", "backtrace", class_stack, 0);
1967 add_com_alias ("t", "backtrace", class_stack, 0);
1968 add_com ("T", class_stack, backtrace_full_command,
1969 "Print backtrace of all stack frames, or innermost COUNT frames \n\
1970 and the values of the local variables.\n\
1971 With a negative argument, print outermost -COUNT frames.\n\
1972 Usage: T <count>\n");
1975 add_com_alias ("where", "backtrace", class_alias, 0);
1976 add_info ("stack", backtrace_command,
1977 "Backtrace of the stack, or innermost COUNT frames.");
1978 add_info_alias ("s", "stack", 1);
1979 add_info ("frame", frame_info,
1980 "All about selected stack frame, or frame at ADDR.");
1981 add_info_alias ("f", "frame", 1);
1982 add_info ("locals", locals_info,
1983 "Local variables of current stack frame.");
1984 add_info ("args", args_info,
1985 "Argument variables of current stack frame.");
1987 add_com ("l", class_info, args_plus_locals_info,
1988 "Argument and local variables of current stack frame.");
1991 add_com ("func", class_stack, func_command,
1992 "Select the stack frame that contains <func>.\nUsage: func <name>\n");
1994 add_info ("catch", catch_info,
1995 "Exceptions that can be caught in the current stack frame.");
1998 add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command,
1999 "Specify maximum number of frames for \"backtrace\" to print by default.",
2001 add_info ("backtrace-limit", backtrace_limit_info,
2002 "The maximum number of frames for \"backtrace\" to print by default.");