1 /* Print and select stack frames for GDB, the GNU debugger.
3 Copyright (C) 1986-2023 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
31 #include "breakpoint.h"
38 #include "dictionary.h"
39 #include "reggroups.h"
43 #include "gdbthread.h"
44 #include "cp-support.h"
46 #include "inline-frame.h"
48 #include "cli/cli-utils.h"
53 #include "extension.h"
54 #include "observable.h"
55 #include "gdbsupport/def-vector.h"
56 #include "cli/cli-option.h"
57 #include "cli/cli-style.h"
58 #include "gdbsupport/buildargv.h"
60 /* The possible choices of "set print frame-arguments", and the value
63 const char print_frame_arguments_all
[] = "all";
64 const char print_frame_arguments_scalars
[] = "scalars";
65 const char print_frame_arguments_none
[] = "none";
66 const char print_frame_arguments_presence
[] = "presence";
68 static const char *const print_frame_arguments_choices
[] =
70 print_frame_arguments_all
,
71 print_frame_arguments_scalars
,
72 print_frame_arguments_none
,
73 print_frame_arguments_presence
,
77 /* The possible choices of "set print frame-info", and the value
80 const char print_frame_info_auto
[] = "auto";
81 const char print_frame_info_source_line
[] = "source-line";
82 const char print_frame_info_location
[] = "location";
83 const char print_frame_info_source_and_location
[] = "source-and-location";
84 const char print_frame_info_location_and_address
[] = "location-and-address";
85 const char print_frame_info_short_location
[] = "short-location";
87 static const char *const print_frame_info_choices
[] =
89 print_frame_info_auto
,
90 print_frame_info_source_line
,
91 print_frame_info_location
,
92 print_frame_info_source_and_location
,
93 print_frame_info_location_and_address
,
94 print_frame_info_short_location
,
98 /* print_frame_info_print_what[i] maps a choice to the corresponding
100 static const gdb::optional
<enum print_what
> print_frame_info_print_what
[] =
101 {{}, /* Empty value for "auto". */
102 SRC_LINE
, LOCATION
, SRC_AND_LOC
, LOC_AND_ADDRESS
, SHORT_LOCATION
};
104 /* The possible choices of "set print entry-values", and the value
107 const char print_entry_values_no
[] = "no";
108 const char print_entry_values_only
[] = "only";
109 const char print_entry_values_preferred
[] = "preferred";
110 const char print_entry_values_if_needed
[] = "if-needed";
111 const char print_entry_values_both
[] = "both";
112 const char print_entry_values_compact
[] = "compact";
113 const char print_entry_values_default
[] = "default";
114 static const char *const print_entry_values_choices
[] =
116 print_entry_values_no
,
117 print_entry_values_only
,
118 print_entry_values_preferred
,
119 print_entry_values_if_needed
,
120 print_entry_values_both
,
121 print_entry_values_compact
,
122 print_entry_values_default
,
127 frame_print_options user_frame_print_options
;
129 /* Option definitions for some frame-related "set print ..."
132 using boolean_option_def
133 = gdb::option::boolean_option_def
<frame_print_options
>;
134 using enum_option_def
135 = gdb::option::enum_option_def
<frame_print_options
>;
137 static const gdb::option::option_def frame_print_option_defs
[] = {
141 print_entry_values_choices
,
142 [] (frame_print_options
*opt
) { return &opt
->print_entry_values
; },
143 NULL
, /* show_cmd_cb */
144 N_("Set printing of function arguments at function entry."),
145 N_("Show printing of function arguments at function entry."),
146 N_("GDB can sometimes determine the values of function arguments at entry,\n\
147 in addition to their current values. This option tells GDB whether\n\
148 to print the current value, the value at entry (marked as val@entry),\n\
149 or both. Note that one or both of these values may be <optimized out>."),
154 print_frame_arguments_choices
,
155 [] (frame_print_options
*opt
) { return &opt
->print_frame_arguments
; },
156 NULL
, /* show_cmd_cb */
157 N_("Set printing of non-scalar frame arguments."),
158 N_("Show printing of non-scalar frame arguments."),
163 "raw-frame-arguments",
164 [] (frame_print_options
*opt
) { return &opt
->print_raw_frame_arguments
; },
165 NULL
, /* show_cmd_cb */
166 N_("Set whether to print frame arguments in raw form."),
167 N_("Show whether to print frame arguments in raw form."),
168 N_("If set, frame arguments are printed in raw form, bypassing any\n\
169 pretty-printers for that value.")
174 print_frame_info_choices
,
175 [] (frame_print_options
*opt
) { return &opt
->print_frame_info
; },
176 NULL
, /* show_cmd_cb */
177 N_("Set printing of frame information."),
178 N_("Show printing of frame information."),
184 /* Options for the "backtrace" command. */
186 struct backtrace_cmd_options
189 bool no_filters
= false;
193 using bt_flag_option_def
194 = gdb::option::flag_option_def
<backtrace_cmd_options
>;
196 static const gdb::option::option_def backtrace_command_option_defs
[] = {
199 [] (backtrace_cmd_options
*opt
) { return &opt
->full
; },
200 N_("Print values of local variables.")
205 [] (backtrace_cmd_options
*opt
) { return &opt
->no_filters
; },
206 N_("Prohibit frame filters from executing on a backtrace."),
211 [] (backtrace_cmd_options
*opt
) { return &opt
->hide
; },
212 N_("Causes Python frame filter elided frames to not be printed."),
216 /* Prototypes for local functions. */
218 static void print_frame_local_vars (frame_info_ptr frame
,
220 const char *regexp
, const char *t_regexp
,
221 int num_tabs
, struct ui_file
*stream
);
223 static void print_frame (const frame_print_options
&opts
,
224 frame_info_ptr frame
, int print_level
,
225 enum print_what print_what
, int print_args
,
226 struct symtab_and_line sal
);
228 static frame_info_ptr
find_frame_for_function (const char *);
229 static frame_info_ptr
find_frame_for_address (CORE_ADDR
);
231 /* Zero means do things normally; we are interacting directly with the
232 user. One means print the full filename and linenumber when a
233 frame is printed, and do so in a format emacs18/emacs19.22 can
234 parse. Two means print similar annotations, but in many more
235 cases and in a slightly different syntax. */
237 int annotation_level
= 0;
239 /* Class used to manage tracking the last symtab we displayed. */
241 class last_displayed_symtab_info_type
244 /* True if the cached information is valid. */
245 bool is_valid () const
248 /* Return the cached program_space. If the cache is invalid nullptr is
250 struct program_space
*pspace () const
253 /* Return the cached CORE_ADDR address. If the cache is invalid 0 is
255 CORE_ADDR
address () const
256 { return m_address
; }
258 /* Return the cached symtab. If the cache is invalid nullptr is
260 struct symtab
*symtab () const
263 /* Return the cached line number. If the cache is invalid 0 is
268 /* Invalidate the cache, reset all the members to their default value. */
278 /* Store a new set of values in the cache. */
279 void set (struct program_space
*pspace
, CORE_ADDR address
,
280 struct symtab
*symtab
, int line
)
282 gdb_assert (pspace
!= nullptr);
292 /* True when the cache is valid. */
293 bool m_valid
= false;
295 /* The last program space displayed. */
296 struct program_space
*m_pspace
= nullptr;
298 /* The last address displayed. */
299 CORE_ADDR m_address
= 0;
301 /* The last symtab displayed. */
302 struct symtab
*m_symtab
= nullptr;
304 /* The last line number displayed. */
308 /* An actual instance of the cache, holds information about the last symtab
310 static last_displayed_symtab_info_type last_displayed_symtab_info
;
317 frame_show_address (frame_info_ptr frame
,
318 struct symtab_and_line sal
)
320 /* If there is a line number, but no PC, then there is no location
321 information associated with this sal. The only way that should
322 happen is for the call sites of inlined functions (SAL comes from
323 find_frame_sal). Otherwise, we would have some PC range if the
324 SAL came from a line table. */
325 if (sal
.line
!= 0 && sal
.pc
== 0 && sal
.end
== 0)
327 if (get_next_frame (frame
) == NULL
)
328 gdb_assert (inline_skipped_frames (inferior_thread ()) > 0);
330 gdb_assert (get_frame_type (get_next_frame (frame
)) == INLINE_FRAME
);
334 return get_frame_pc (frame
) != sal
.pc
|| !sal
.is_stmt
;
340 print_stack_frame_to_uiout (struct ui_out
*uiout
, frame_info_ptr frame
,
341 int print_level
, enum print_what print_what
,
344 scoped_restore save_uiout
= make_scoped_restore (¤t_uiout
, uiout
);
346 print_stack_frame (frame
, print_level
, print_what
, set_current_sal
);
349 /* Show or print a stack frame FRAME briefly. The output is formatted
350 according to PRINT_LEVEL and PRINT_WHAT printing the frame's
351 relative level, function name, argument list, and file name and
352 line number. If the frame's PC is not at the beginning of the
353 source line, the actual PC is printed at the beginning. */
356 print_stack_frame (frame_info_ptr frame
, int print_level
,
357 enum print_what print_what
,
361 /* For mi, always print location and address. */
362 if (current_uiout
->is_mi_like_p ())
363 print_what
= LOC_AND_ADDRESS
;
365 frame
.prepare_reinflate ();
368 print_frame_info (user_frame_print_options
,
369 frame
, print_level
, print_what
, 1 /* print_args */,
373 set_current_sal_from_frame (frame
);
375 catch (const gdb_exception_error
&e
)
380 /* Print nameless arguments of frame FRAME on STREAM, where START is
381 the offset of the first nameless argument, and NUM is the number of
382 nameless arguments to print. FIRST is nonzero if this is the first
383 argument (not just the first nameless argument). */
386 print_frame_nameless_args (frame_info_ptr frame
, long start
, int num
,
387 int first
, struct ui_file
*stream
)
389 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
390 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
395 for (i
= 0; i
< num
; i
++)
398 argsaddr
= get_frame_args_address (frame
);
401 arg_value
= read_memory_integer (argsaddr
+ start
,
402 sizeof (int), byte_order
);
404 gdb_printf (stream
, ", ");
405 gdb_printf (stream
, "%ld", arg_value
);
407 start
+= sizeof (int);
411 /* Print single argument of inferior function. ARG must be already
414 Errors are printed as if they would be the parameter value. Use zeroed ARG
415 iff it should not be printed according to user settings. */
418 print_frame_arg (const frame_print_options
&fp_opts
,
419 const struct frame_arg
*arg
)
421 struct ui_out
*uiout
= current_uiout
;
425 gdb_assert (!arg
->val
|| !arg
->error
);
426 gdb_assert (arg
->entry_kind
== print_entry_values_no
427 || arg
->entry_kind
== print_entry_values_only
428 || (!uiout
->is_mi_like_p ()
429 && arg
->entry_kind
== print_entry_values_compact
));
431 annotate_arg_emitter arg_emitter
;
432 ui_out_emit_tuple
tuple_emitter (uiout
, NULL
);
433 gdb_puts (arg
->sym
->print_name (), &stb
);
434 if (arg
->entry_kind
== print_entry_values_compact
)
436 /* It is OK to provide invalid MI-like stream as with
437 PRINT_ENTRY_VALUE_COMPACT we never use MI. */
440 gdb_puts (arg
->sym
->print_name (), &stb
);
442 if (arg
->entry_kind
== print_entry_values_only
443 || arg
->entry_kind
== print_entry_values_compact
)
445 uiout
->field_stream ("name", stb
, variable_name_style
.style ());
446 annotate_arg_name_end ();
450 if (!arg
->val
&& !arg
->error
)
456 stb
.printf (_("<error reading variable: %s>"), arg
->error
.get ());
457 style
= metadata_style
.style ();
463 const struct language_defn
*language
;
464 struct value_print_options vp_opts
;
466 /* Avoid value_print because it will deref ref parameters. We
467 just want to print their addresses. Print ??? for args whose
468 address we do not know. We pass 2 as "recurse" to val_print
469 because our standard indentation here is 4 spaces, and
470 val_print indents 2 for each recurse. */
472 annotate_arg_value (value_type (arg
->val
));
474 /* Use the appropriate language to display our symbol, unless the
475 user forced the language to a specific language. */
476 if (language_mode
== language_mode_auto
)
477 language
= language_def (arg
->sym
->language ());
479 language
= current_language
;
481 get_no_prettyformat_print_options (&vp_opts
);
482 vp_opts
.deref_ref
= true;
483 vp_opts
.raw
= fp_opts
.print_raw_frame_arguments
;
485 /* True in "summary" mode, false otherwise. */
487 = fp_opts
.print_frame_arguments
== print_frame_arguments_scalars
;
489 common_val_print_checked (arg
->val
, &stb
, 2, &vp_opts
, language
);
491 catch (const gdb_exception_error
&except
)
493 stb
.printf (_("<error reading variable: %s>"),
495 style
= metadata_style
.style ();
500 uiout
->field_stream ("value", stb
, style
);
503 /* Read in inferior function local SYM at FRAME into ARGP. Caller is
504 responsible for xfree of ARGP->ERROR. This function never throws an
508 read_frame_local (struct symbol
*sym
, frame_info_ptr frame
,
509 struct frame_arg
*argp
)
517 argp
->val
= read_var_value (sym
, NULL
, frame
);
519 catch (const gdb_exception_error
&except
)
521 argp
->error
.reset (xstrdup (except
.what ()));
525 /* Read in inferior function parameter SYM at FRAME into ARGP. This
526 function never throws an exception. */
529 read_frame_arg (const frame_print_options
&fp_opts
,
530 symbol
*sym
, frame_info_ptr frame
,
531 struct frame_arg
*argp
, struct frame_arg
*entryargp
)
533 struct value
*val
= NULL
, *entryval
= NULL
;
534 char *val_error
= NULL
, *entryval_error
= NULL
;
537 if (fp_opts
.print_entry_values
!= print_entry_values_only
538 && fp_opts
.print_entry_values
!= print_entry_values_preferred
)
542 val
= read_var_value (sym
, NULL
, frame
);
544 catch (const gdb_exception_error
&except
)
546 val_error
= (char *) alloca (except
.message
->size () + 1);
547 strcpy (val_error
, except
.what ());
551 if (SYMBOL_COMPUTED_OPS (sym
) != NULL
552 && SYMBOL_COMPUTED_OPS (sym
)->read_variable_at_entry
!= NULL
553 && fp_opts
.print_entry_values
!= print_entry_values_no
554 && (fp_opts
.print_entry_values
!= print_entry_values_if_needed
555 || !val
|| value_optimized_out (val
)))
559 const struct symbol_computed_ops
*ops
;
561 ops
= SYMBOL_COMPUTED_OPS (sym
);
562 entryval
= ops
->read_variable_at_entry (sym
, frame
);
564 catch (const gdb_exception_error
&except
)
566 if (except
.error
!= NO_ENTRY_VALUE_ERROR
)
568 entryval_error
= (char *) alloca (except
.message
->size () + 1);
569 strcpy (entryval_error
, except
.what ());
573 if (entryval
!= NULL
&& value_optimized_out (entryval
))
576 if (fp_opts
.print_entry_values
== print_entry_values_compact
577 || fp_opts
.print_entry_values
== print_entry_values_default
)
579 /* For MI do not try to use print_entry_values_compact for ARGP. */
581 if (val
&& entryval
&& !current_uiout
->is_mi_like_p ())
583 struct type
*type
= value_type (val
);
585 if (value_lazy (val
))
586 value_fetch_lazy (val
);
587 if (value_lazy (entryval
))
588 value_fetch_lazy (entryval
);
590 if (value_contents_eq (val
, 0, entryval
, 0, type
->length ()))
592 /* Initialize it just to avoid a GCC false warning. */
593 struct value
*val_deref
= NULL
, *entryval_deref
;
595 /* DW_AT_call_value does match with the current
596 value. If it is a reference still try to verify if
597 dereferenced DW_AT_call_data_value does not differ. */
601 struct type
*type_deref
;
603 val_deref
= coerce_ref (val
);
604 if (value_lazy (val_deref
))
605 value_fetch_lazy (val_deref
);
606 type_deref
= value_type (val_deref
);
608 entryval_deref
= coerce_ref (entryval
);
609 if (value_lazy (entryval_deref
))
610 value_fetch_lazy (entryval_deref
);
612 /* If the reference addresses match but dereferenced
613 content does not match print them. */
615 && value_contents_eq (val_deref
, 0,
617 type_deref
->length ()))
620 catch (const gdb_exception_error
&except
)
622 /* If the dereferenced content could not be
623 fetched do not display anything. */
624 if (except
.error
== NO_ENTRY_VALUE_ERROR
)
626 else if (except
.message
!= NULL
)
629 = (char *) alloca (except
.message
->size () + 1);
630 strcpy (entryval_error
, except
.what ());
634 /* Value was not a reference; and its content matches. */
635 if (val
== val_deref
)
643 /* Try to remove possibly duplicate error message for ENTRYARGP even
646 if (val_error
&& entryval_error
647 && strcmp (val_error
, entryval_error
) == 0)
649 entryval_error
= NULL
;
651 /* Do not se VAL_EQUAL as the same error message may be shown for
652 the entry value even if no entry values are present in the
658 if (entryval
== NULL
)
660 if (fp_opts
.print_entry_values
== print_entry_values_preferred
)
662 gdb_assert (val
== NULL
);
666 val
= read_var_value (sym
, NULL
, frame
);
668 catch (const gdb_exception_error
&except
)
670 val_error
= (char *) alloca (except
.message
->size () + 1);
671 strcpy (val_error
, except
.what ());
674 if (fp_opts
.print_entry_values
== print_entry_values_only
675 || fp_opts
.print_entry_values
== print_entry_values_both
676 || (fp_opts
.print_entry_values
== print_entry_values_preferred
677 && (!val
|| value_optimized_out (val
))))
679 entryval
= allocate_optimized_out_value (sym
->type ());
680 entryval_error
= NULL
;
683 if ((fp_opts
.print_entry_values
== print_entry_values_compact
684 || fp_opts
.print_entry_values
== print_entry_values_if_needed
685 || fp_opts
.print_entry_values
== print_entry_values_preferred
)
686 && (!val
|| value_optimized_out (val
)) && entryval
!= NULL
)
694 argp
->error
.reset (val_error
? xstrdup (val_error
) : NULL
);
695 if (!val
&& !val_error
)
696 argp
->entry_kind
= print_entry_values_only
;
697 else if ((fp_opts
.print_entry_values
== print_entry_values_compact
698 || fp_opts
.print_entry_values
== print_entry_values_default
)
701 argp
->entry_kind
= print_entry_values_compact
;
702 gdb_assert (!current_uiout
->is_mi_like_p ());
705 argp
->entry_kind
= print_entry_values_no
;
707 entryargp
->sym
= sym
;
708 entryargp
->val
= entryval
;
709 entryargp
->error
.reset (entryval_error
? xstrdup (entryval_error
) : NULL
);
710 if (!entryval
&& !entryval_error
)
711 entryargp
->entry_kind
= print_entry_values_no
;
713 entryargp
->entry_kind
= print_entry_values_only
;
716 /* Print the arguments of frame FRAME on STREAM, given the function
717 FUNC running in that frame (as a symbol), where NUM is the number
718 of arguments according to the stack frame (or -1 if the number of
719 arguments is unknown). */
721 /* Note that currently the "number of arguments according to the
722 stack frame" is only known on VAX where i refers to the "number of
723 ints of arguments according to the stack frame". */
726 print_frame_args (const frame_print_options
&fp_opts
,
727 struct symbol
*func
, frame_info_ptr frame
,
728 int num
, struct ui_file
*stream
)
730 struct ui_out
*uiout
= current_uiout
;
732 /* Offset of next stack argument beyond the one we have seen that is
733 at the highest offset, or -1 if we haven't come to a stack
735 long highest_offset
= -1;
736 /* Number of ints of arguments that we have printed so far. */
737 int args_printed
= 0;
738 /* True if we should print arg names. If false, we only indicate
739 the presence of arguments by printing ellipsis. */
741 = fp_opts
.print_frame_arguments
!= print_frame_arguments_presence
;
742 /* True if we should print arguments, false otherwise. */
745 && fp_opts
.print_frame_arguments
!= print_frame_arguments_none
);
747 /* If one of the arguments has a pretty printer that calls a
748 function of the inferior to print it, the pointer must be
750 frame
.prepare_reinflate ();
752 /* Temporarily change the selected frame to the given FRAME.
753 This allows routines that rely on the selected frame instead
754 of being given a frame as parameter to use the correct frame. */
755 scoped_restore_selected_frame restore_selected_frame
;
756 select_frame (frame
);
760 const struct block
*b
= func
->value_block ();
761 struct block_iterator iter
;
764 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
766 struct frame_arg arg
, entryarg
;
770 /* Keep track of the highest stack argument offset seen, and
771 skip over any kinds of symbols we don't care about. */
773 if (!sym
->is_argument ())
783 switch (sym
->aclass ())
788 long current_offset
= sym
->value_longest ();
789 int arg_size
= sym
->type ()->length ();
791 /* Compute address of next argument by adding the size of
792 this argument and rounding to an int boundary. */
794 ((current_offset
+ arg_size
+ sizeof (int) - 1)
795 & ~(sizeof (int) - 1));
797 /* If this is the highest offset seen yet, set
799 if (highest_offset
== -1
800 || (current_offset
> highest_offset
))
801 highest_offset
= current_offset
;
803 /* Add the number of ints we're about to print to
805 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
808 /* We care about types of symbols, but don't need to
809 keep track of stack offsets in them. */
811 case LOC_REGPARM_ADDR
:
813 case LOC_OPTIMIZED_OUT
:
818 /* We have to look up the symbol because arguments can have
819 two entries (one a parameter, one a local) and the one we
820 want is the local, which lookup_symbol will find for us.
821 This includes gcc1 (not gcc2) on SPARC when passing a
822 small structure and gcc2 when the argument type is float
823 and it is passed as a double and converted to float by
824 the prologue (in the latter case the type of the LOC_ARG
825 symbol is double and the type of the LOC_LOCAL symbol is
827 /* But if the parameter name is null, don't try it. Null
828 parameter names occur on the RS/6000, for traceback
829 tables. FIXME, should we even print them? */
831 if (*sym
->linkage_name ())
835 nsym
= lookup_symbol_search_name (sym
->search_name (),
836 b
, VAR_DOMAIN
).symbol
;
837 gdb_assert (nsym
!= NULL
);
838 if (nsym
->aclass () == LOC_REGISTER
839 && !nsym
->is_argument ())
841 /* There is a LOC_ARG/LOC_REGISTER pair. This means
842 that it was passed on the stack and loaded into a
843 register, or passed in a register and stored in a
844 stack slot. GDB 3.x used the LOC_ARG; GDB
845 4.0-4.11 used the LOC_REGISTER.
847 Reasons for using the LOC_ARG:
849 (1) Because find_saved_registers may be slow for
852 (2) Because registers are often re-used and stack
853 slots rarely (never?) are. Therefore using
854 the stack slot is much less likely to print
857 Reasons why we might want to use the LOC_REGISTER:
859 (1) So that the backtrace prints the same value
860 as "print foo". I see no compelling reason
861 why this needs to be the case; having the
862 backtrace print the value which was passed
863 in, and "print foo" print the value as
864 modified within the called function, makes
867 Additional note: It might be nice if "info args"
868 displayed both values.
870 One more note: There is a case with SPARC
871 structure passing where we need to use the
872 LOC_REGISTER, but this is dealt with by creating
873 a single LOC_REGPARM in symbol reading. */
875 /* Leave sym (the LOC_ARG) alone. */
882 /* Print the current arg. */
885 uiout
->wrap_hint (4);
890 arg
.entry_kind
= print_entry_values_no
;
892 entryarg
.entry_kind
= print_entry_values_no
;
895 read_frame_arg (fp_opts
, sym
, frame
, &arg
, &entryarg
);
897 if (arg
.entry_kind
!= print_entry_values_only
)
898 print_frame_arg (fp_opts
, &arg
);
900 if (entryarg
.entry_kind
!= print_entry_values_no
)
902 if (arg
.entry_kind
!= print_entry_values_only
)
905 uiout
->wrap_hint (4);
908 print_frame_arg (fp_opts
, &entryarg
);
916 /* Don't print nameless args in situations where we don't know
917 enough about the stack to find them. */
922 if (highest_offset
== -1)
923 start
= gdbarch_frame_args_skip (get_frame_arch (frame
));
925 start
= highest_offset
;
927 if (!print_names
&& !first
&& num
> 0)
930 print_frame_nameless_args (frame
, start
, num
- args_printed
,
935 /* Set the current source and line to the location given by frame
936 FRAME, if possible. When CENTER is true, adjust so the relevant
937 line is in the center of the next 'list'. */
940 set_current_sal_from_frame (frame_info_ptr frame
)
942 symtab_and_line sal
= find_frame_sal (frame
);
943 if (sal
.symtab
!= NULL
)
944 set_current_source_symtab_and_line (sal
);
947 /* If ON, GDB will display disassembly of the next source line when
948 execution of the program being debugged stops.
949 If AUTO (which is the default), or there's no line info to determine
950 the source line of the next instruction, display disassembly of next
951 instruction instead. */
953 static enum auto_boolean disassemble_next_line
;
956 show_disassemble_next_line (struct ui_file
*file
, int from_tty
,
957 struct cmd_list_element
*c
,
961 _("Debugger's willingness to use "
962 "disassemble-next-line is %s.\n"),
966 /* Use TRY_CATCH to catch the exception from the gdb_disassembly
967 because it will be broken by filter sometime. */
970 do_gdb_disassembly (struct gdbarch
*gdbarch
,
971 int how_many
, CORE_ADDR low
, CORE_ADDR high
)
976 gdb_disassembly (gdbarch
, current_uiout
,
977 DISASSEMBLY_RAW_INSN
, how_many
,
980 catch (const gdb_exception_error
&exception
)
982 /* If an exception was thrown while doing the disassembly, print
983 the error message, to give the user a clue of what happened. */
984 exception_print (gdb_stderr
, exception
);
988 /* Converts the PRINT_FRAME_INFO choice to an optional enum print_what.
989 Value not present indicates to the caller to use default values
990 specific to the command being executed. */
992 static gdb::optional
<enum print_what
>
993 print_frame_info_to_print_what (const char *print_frame_info
)
995 for (int i
= 0; print_frame_info_choices
[i
] != NULL
; i
++)
996 if (print_frame_info
== print_frame_info_choices
[i
])
997 return print_frame_info_print_what
[i
];
999 internal_error ("Unexpected print frame-info value `%s'.",
1003 /* Print the PC from FRAME, plus any flags, to UIOUT. */
1006 print_pc (struct ui_out
*uiout
, struct gdbarch
*gdbarch
, frame_info_ptr frame
,
1009 uiout
->field_core_addr ("addr", gdbarch
, pc
);
1011 std::string flags
= gdbarch_get_pc_address_flags (gdbarch
, frame
, pc
);
1012 if (!flags
.empty ())
1015 uiout
->field_string ("addr_flags", flags
);
1023 get_user_print_what_frame_info (gdb::optional
<enum print_what
> *what
)
1026 = print_frame_info_to_print_what
1027 (user_frame_print_options
.print_frame_info
);
1030 /* Print information about frame FRAME. The output is format according
1031 to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. For the meaning of
1032 PRINT_WHAT, see enum print_what comments in frame.h.
1033 Note that PRINT_WHAT is overridden if FP_OPTS.print_frame_info
1034 != print_frame_info_auto.
1036 Used in "where" output, and to emit breakpoint or step
1040 print_frame_info (const frame_print_options
&fp_opts
,
1041 frame_info_ptr frame
, int print_level
,
1042 enum print_what print_what
, int print_args
,
1043 int set_current_sal
)
1045 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1048 struct ui_out
*uiout
= current_uiout
;
1050 frame
.prepare_reinflate ();
1052 if (!current_uiout
->is_mi_like_p ()
1053 && fp_opts
.print_frame_info
!= print_frame_info_auto
)
1055 /* Use the specific frame information desired by the user. */
1056 print_what
= *print_frame_info_to_print_what (fp_opts
.print_frame_info
);
1059 if (get_frame_type (frame
) == DUMMY_FRAME
1060 || get_frame_type (frame
) == SIGTRAMP_FRAME
1061 || get_frame_type (frame
) == ARCH_FRAME
)
1063 ui_out_emit_tuple
tuple_emitter (uiout
, "frame");
1065 annotate_frame_begin (print_level
? frame_relative_level (frame
) : 0,
1066 gdbarch
, get_frame_pc (frame
));
1068 /* Do this regardless of SOURCE because we don't have any source
1069 to list for this frame. */
1073 uiout
->field_fmt_signed (2, ui_left
, "level",
1074 frame_relative_level (frame
));
1076 if (uiout
->is_mi_like_p ())
1078 annotate_frame_address ();
1079 print_pc (uiout
, gdbarch
, frame
, get_frame_pc (frame
));
1080 annotate_frame_address_end ();
1083 if (get_frame_type (frame
) == DUMMY_FRAME
)
1085 annotate_function_call ();
1086 uiout
->field_string ("func", "<function called from gdb>",
1087 metadata_style
.style ());
1089 else if (get_frame_type (frame
) == SIGTRAMP_FRAME
)
1091 annotate_signal_handler_caller ();
1092 uiout
->field_string ("func", "<signal handler called>",
1093 metadata_style
.style ());
1095 else if (get_frame_type (frame
) == ARCH_FRAME
)
1097 uiout
->field_string ("func", "<cross-architecture call>",
1098 metadata_style
.style ());
1101 annotate_frame_end ();
1103 /* If disassemble-next-line is set to auto or on output the next
1105 if (disassemble_next_line
== AUTO_BOOLEAN_AUTO
1106 || disassemble_next_line
== AUTO_BOOLEAN_TRUE
)
1107 do_gdb_disassembly (get_frame_arch (frame
), 1,
1108 get_frame_pc (frame
), get_frame_pc (frame
) + 1);
1113 /* If FRAME is not the innermost frame, that normally means that
1114 FRAME->pc points to *after* the call instruction, and we want to
1115 get the line containing the call, never the next line. But if
1116 the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the
1117 next frame was not entered as the result of a call, and we want
1118 to get the line containing FRAME->pc. */
1119 symtab_and_line sal
= find_frame_sal (frame
);
1121 location_print
= (print_what
== LOCATION
1122 || print_what
== SRC_AND_LOC
1123 || print_what
== LOC_AND_ADDRESS
1124 || print_what
== SHORT_LOCATION
);
1125 if (location_print
|| !sal
.symtab
)
1126 print_frame (fp_opts
, frame
, print_level
, print_what
, print_args
, sal
);
1128 source_print
= (print_what
== SRC_LINE
|| print_what
== SRC_AND_LOC
);
1130 /* If disassemble-next-line is set to auto or on and doesn't have
1131 the line debug messages for $pc, output the next instruction. */
1132 if ((disassemble_next_line
== AUTO_BOOLEAN_AUTO
1133 || disassemble_next_line
== AUTO_BOOLEAN_TRUE
)
1134 && source_print
&& !sal
.symtab
)
1135 do_gdb_disassembly (get_frame_arch (frame
), 1,
1136 get_frame_pc (frame
), get_frame_pc (frame
) + 1);
1138 if (source_print
&& sal
.symtab
)
1140 int mid_statement
= ((print_what
== SRC_LINE
)
1141 && frame_show_address (frame
, sal
));
1142 if (annotation_level
> 0
1143 && annotate_source_line (sal
.symtab
, sal
.line
, mid_statement
,
1144 get_frame_pc (frame
)))
1146 /* The call to ANNOTATE_SOURCE_LINE already printed the
1147 annotation for this source line, so we avoid the two cases
1148 below and do not print the actual source line. The
1149 documentation for annotations makes it clear that the source
1150 line annotation is printed __instead__ of printing the source
1151 line, not as well as.
1153 However, if we fail to print the source line, which usually
1154 means either the source file is missing, or the requested
1155 line is out of range of the file, then we don't print the
1156 source annotation, and will pass through the "normal" print
1157 source line code below, the expectation is that this code
1158 will print an appropriate error. */
1160 else if (deprecated_print_frame_info_listing_hook
)
1161 deprecated_print_frame_info_listing_hook (sal
.symtab
, sal
.line
,
1165 struct value_print_options opts
;
1167 get_user_print_options (&opts
);
1168 /* We used to do this earlier, but that is clearly
1169 wrong. This function is used by many different
1170 parts of gdb, including normal_stop in infrun.c,
1171 which uses this to print out the current PC
1172 when we stepi/nexti into the middle of a source
1173 line. Only the command line really wants this
1174 behavior. Other UIs probably would like the
1175 ability to decide for themselves if it is desired. */
1176 if (opts
.addressprint
&& mid_statement
)
1178 print_pc (uiout
, gdbarch
, frame
, get_frame_pc (frame
));
1182 print_source_lines (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
1186 /* If disassemble-next-line is set to on and there is line debug
1187 messages, output assembly codes for next line. */
1188 if (disassemble_next_line
== AUTO_BOOLEAN_TRUE
)
1189 do_gdb_disassembly (get_frame_arch (frame
), -1, sal
.pc
, sal
.end
);
1192 if (set_current_sal
)
1196 if (get_frame_pc_if_available (frame
, &pc
))
1197 last_displayed_symtab_info
.set (sal
.pspace
, pc
, sal
.symtab
, sal
.line
);
1199 last_displayed_symtab_info
.invalidate ();
1202 annotate_frame_end ();
1204 gdb_flush (gdb_stdout
);
1210 clear_last_displayed_sal (void)
1212 last_displayed_symtab_info
.invalidate ();
1218 last_displayed_sal_is_valid (void)
1220 return last_displayed_symtab_info
.is_valid ();
1225 struct program_space
*
1226 get_last_displayed_pspace (void)
1228 return last_displayed_symtab_info
.pspace ();
1234 get_last_displayed_addr (void)
1236 return last_displayed_symtab_info
.address ();
1242 get_last_displayed_symtab (void)
1244 return last_displayed_symtab_info
.symtab ();
1250 get_last_displayed_line (void)
1252 return last_displayed_symtab_info
.line ();
1258 get_last_displayed_sal ()
1260 symtab_and_line sal
;
1262 if (last_displayed_symtab_info
.is_valid ())
1264 sal
.pspace
= last_displayed_symtab_info
.pspace ();
1265 sal
.pc
= last_displayed_symtab_info
.address ();
1266 sal
.symtab
= last_displayed_symtab_info
.symtab ();
1267 sal
.line
= last_displayed_symtab_info
.line ();
1274 /* Attempt to obtain the name, FUNLANG and optionally FUNCP of the function
1275 corresponding to FRAME. */
1277 gdb::unique_xmalloc_ptr
<char>
1278 find_frame_funname (frame_info_ptr frame
, enum language
*funlang
,
1279 struct symbol
**funcp
)
1281 struct symbol
*func
;
1282 gdb::unique_xmalloc_ptr
<char> funname
;
1284 *funlang
= language_unknown
;
1288 func
= get_frame_function (frame
);
1291 const char *print_name
= func
->print_name ();
1293 *funlang
= func
->language ();
1296 if (*funlang
== language_cplus
)
1298 /* It seems appropriate to use print_name() here,
1299 to display the demangled name that we already have
1300 stored in the symbol table, but we stored a version
1301 with DMGL_PARAMS turned on, and here we don't want to
1302 display parameters. So remove the parameters. */
1303 funname
= cp_remove_params (print_name
);
1306 /* If we didn't hit the C++ case above, set *funname
1308 if (funname
== NULL
)
1309 funname
.reset (xstrdup (print_name
));
1313 struct bound_minimal_symbol msymbol
;
1316 if (!get_frame_address_in_block_if_available (frame
, &pc
))
1319 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1320 if (msymbol
.minsym
!= NULL
)
1322 funname
.reset (xstrdup (msymbol
.minsym
->print_name ()));
1323 *funlang
= msymbol
.minsym
->language ();
1331 print_frame (const frame_print_options
&fp_opts
,
1332 frame_info_ptr frame
, int print_level
,
1333 enum print_what print_what
, int print_args
,
1334 struct symtab_and_line sal
)
1336 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1337 struct ui_out
*uiout
= current_uiout
;
1338 enum language funlang
= language_unknown
;
1339 struct value_print_options opts
;
1340 struct symbol
*func
;
1344 pc_p
= get_frame_pc_if_available (frame
, &pc
);
1346 gdb::unique_xmalloc_ptr
<char> funname
1347 = find_frame_funname (frame
, &funlang
, &func
);
1349 annotate_frame_begin (print_level
? frame_relative_level (frame
) : 0,
1353 ui_out_emit_tuple
tuple_emitter (uiout
, "frame");
1358 uiout
->field_fmt_signed (2, ui_left
, "level",
1359 frame_relative_level (frame
));
1361 get_user_print_options (&opts
);
1362 if (opts
.addressprint
)
1364 || frame_show_address (frame
, sal
)
1365 || print_what
== LOC_AND_ADDRESS
)
1367 annotate_frame_address ();
1369 print_pc (uiout
, gdbarch
, frame
, pc
);
1371 uiout
->field_string ("addr", "<unavailable>",
1372 metadata_style
.style ());
1373 annotate_frame_address_end ();
1374 uiout
->text (" in ");
1376 annotate_frame_function_name ();
1379 gdb_puts (funname
? funname
.get () : "??", &stb
);
1380 uiout
->field_stream ("func", stb
, function_name_style
.style ());
1381 uiout
->wrap_hint (3);
1382 annotate_frame_args ();
1389 if (gdbarch_frame_num_args_p (gdbarch
))
1391 numargs
= gdbarch_frame_num_args (gdbarch
, frame
);
1392 gdb_assert (numargs
>= 0);
1398 ui_out_emit_list
list_emitter (uiout
, "args");
1401 print_frame_args (fp_opts
, func
, frame
, numargs
, gdb_stdout
);
1403 catch (const gdb_exception_error
&e
)
1407 /* FIXME: ARGS must be a list. If one argument is a string it
1408 will have " that will not be properly escaped. */
1413 if (print_what
!= SHORT_LOCATION
&& sal
.symtab
)
1415 const char *filename_display
;
1417 filename_display
= symtab_to_filename_for_display (sal
.symtab
);
1418 annotate_frame_source_begin ();
1419 uiout
->wrap_hint (3);
1420 uiout
->text (" at ");
1421 annotate_frame_source_file ();
1422 uiout
->field_string ("file", filename_display
,
1423 file_name_style
.style ());
1424 if (uiout
->is_mi_like_p ())
1426 const char *fullname
= symtab_to_fullname (sal
.symtab
);
1428 uiout
->field_string ("fullname", fullname
);
1430 annotate_frame_source_file_end ();
1432 annotate_frame_source_line ();
1433 uiout
->field_signed ("line", sal
.line
);
1434 annotate_frame_source_end ();
1437 if (print_what
!= SHORT_LOCATION
1438 && pc_p
&& (funname
== NULL
|| sal
.symtab
== NULL
))
1441 = solib_name_from_address (get_frame_program_space (frame
),
1442 get_frame_pc (frame
));
1446 annotate_frame_where ();
1447 uiout
->wrap_hint (2);
1448 uiout
->text (" from ");
1449 uiout
->field_string ("from", lib
, file_name_style
.style ());
1452 if (uiout
->is_mi_like_p ())
1453 uiout
->field_string ("arch",
1454 (gdbarch_bfd_arch_info (gdbarch
))->printable_name
);
1461 /* Completion function for "frame function", "info frame function", and
1462 "select-frame function" commands. */
1465 frame_selection_by_function_completer (struct cmd_list_element
*ignore
,
1466 completion_tracker
&tracker
,
1467 const char *text
, const char *word
)
1469 /* This is used to complete function names within a stack. It would be
1470 nice if we only offered functions that were actually in the stack.
1471 However, this would mean unwinding the stack to completion, which
1472 could take too long, or on a corrupted stack, possibly not end.
1473 Instead, we offer all symbol names as a safer choice. */
1474 collect_symbol_completion_matches (tracker
,
1475 complete_symbol_mode::EXPRESSION
,
1476 symbol_name_match_type::EXPRESSION
,
1480 /* Core of all the "info frame" sub-commands. Print information about a
1481 frame FI. If SELECTED_FRAME_P is true then the user didn't provide a
1482 frame specification, they just entered 'info frame'. If the user did
1483 provide a frame specification (for example 'info frame 0', 'info frame
1484 level 1') then SELECTED_FRAME_P will be false. */
1487 info_frame_command_core (frame_info_ptr fi
, bool selected_frame_p
)
1489 struct symbol
*func
;
1491 frame_info_ptr calling_frame_info
;
1493 const char *funname
= 0;
1494 enum language funlang
= language_unknown
;
1495 const char *pc_regname
;
1496 struct gdbarch
*gdbarch
;
1499 /* Initialize it to avoid "may be used uninitialized" warning. */
1500 CORE_ADDR caller_pc
= 0;
1501 int caller_pc_p
= 0;
1503 gdbarch
= get_frame_arch (fi
);
1505 /* Name of the value returned by get_frame_pc(). Per comments, "pc"
1506 is not a good name. */
1507 if (gdbarch_pc_regnum (gdbarch
) >= 0)
1508 /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can
1509 easily not match that of the internal value returned by
1511 pc_regname
= gdbarch_register_name (gdbarch
, gdbarch_pc_regnum (gdbarch
));
1513 /* But then, this is weird to. Even without gdbarch_pc_regnum, an
1514 architectures will often have a hardware register called "pc",
1515 and that register's value, again, can easily not match
1519 frame_pc_p
= get_frame_pc_if_available (fi
, &frame_pc
);
1520 func
= get_frame_function (fi
);
1521 symtab_and_line sal
= find_frame_sal (fi
);
1523 gdb::unique_xmalloc_ptr
<char> func_only
;
1526 funname
= func
->print_name ();
1527 funlang
= func
->language ();
1528 if (funlang
== language_cplus
)
1530 /* It seems appropriate to use print_name() here,
1531 to display the demangled name that we already have
1532 stored in the symbol table, but we stored a version
1533 with DMGL_PARAMS turned on, and here we don't want to
1534 display parameters. So remove the parameters. */
1535 func_only
= cp_remove_params (funname
);
1538 funname
= func_only
.get ();
1541 else if (frame_pc_p
)
1543 struct bound_minimal_symbol msymbol
;
1545 msymbol
= lookup_minimal_symbol_by_pc (frame_pc
);
1546 if (msymbol
.minsym
!= NULL
)
1548 funname
= msymbol
.minsym
->print_name ();
1549 funlang
= msymbol
.minsym
->language ();
1552 calling_frame_info
= get_prev_frame (fi
);
1554 if (selected_frame_p
&& frame_relative_level (fi
) >= 0)
1556 gdb_printf (_("Stack level %d, frame at "),
1557 frame_relative_level (fi
));
1561 gdb_printf (_("Stack frame at "));
1563 gdb_puts (paddress (gdbarch
, get_frame_base (fi
)));
1565 gdb_printf (" %s = ", pc_regname
);
1567 gdb_puts (paddress (gdbarch
, get_frame_pc (fi
)));
1569 fputs_styled ("<unavailable>", metadata_style
.style (), gdb_stdout
);
1571 gdb_stdout
->wrap_here (3);
1574 gdb_printf (" in ");
1577 gdb_stdout
->wrap_here (3);
1581 styled_string (file_name_style
.style (),
1582 symtab_to_filename_for_display (sal
.symtab
)),
1585 gdb_stdout
->wrap_here (4);
1586 gdb_printf ("saved %s = ", pc_regname
);
1588 if (!frame_id_p (frame_unwind_caller_id (fi
)))
1589 val_print_not_saved (gdb_stdout
);
1594 caller_pc
= frame_unwind_caller_pc (fi
);
1597 catch (const gdb_exception_error
&ex
)
1601 case NOT_AVAILABLE_ERROR
:
1602 val_print_unavailable (gdb_stdout
);
1604 case OPTIMIZED_OUT_ERROR
:
1605 val_print_not_saved (gdb_stdout
);
1608 fprintf_styled (gdb_stdout
, metadata_style
.style (),
1617 gdb_puts (paddress (gdbarch
, caller_pc
));
1620 if (calling_frame_info
== NULL
)
1622 enum unwind_stop_reason reason
;
1624 reason
= get_frame_unwind_stop_reason (fi
);
1625 if (reason
!= UNWIND_NO_REASON
)
1626 gdb_printf (_(" Outermost frame: %s\n"),
1627 frame_stop_reason_string (fi
));
1629 else if (get_frame_type (fi
) == TAILCALL_FRAME
)
1630 gdb_puts (" tail call frame");
1631 else if (get_frame_type (fi
) == INLINE_FRAME
)
1632 gdb_printf (" inlined into frame %d",
1633 frame_relative_level (get_prev_frame (fi
)));
1636 gdb_printf (" called by frame at ");
1637 gdb_puts (paddress (gdbarch
, get_frame_base (calling_frame_info
)));
1639 if (get_next_frame (fi
) && calling_frame_info
)
1641 gdb_stdout
->wrap_here (3);
1642 if (get_next_frame (fi
))
1644 gdb_printf (" caller of frame at ");
1645 gdb_puts (paddress (gdbarch
, get_frame_base (get_next_frame (fi
))));
1647 if (get_next_frame (fi
) || calling_frame_info
)
1651 gdb_printf (" source language %s.\n",
1652 language_str (s
->language ()));
1655 /* Address of the argument list for this frame, or 0. */
1656 CORE_ADDR arg_list
= get_frame_args_address (fi
);
1657 /* Number of args for this frame, or -1 if unknown. */
1661 gdb_printf (" Arglist at unknown address.\n");
1664 gdb_printf (" Arglist at ");
1665 gdb_puts (paddress (gdbarch
, arg_list
));
1668 if (!gdbarch_frame_num_args_p (gdbarch
))
1671 gdb_puts (" args: ");
1675 numargs
= gdbarch_frame_num_args (gdbarch
, fi
);
1676 gdb_assert (numargs
>= 0);
1678 gdb_puts (" no args.");
1679 else if (numargs
== 1)
1680 gdb_puts (" 1 arg: ");
1682 gdb_printf (" %d args: ", numargs
);
1685 fi
.prepare_reinflate ();
1686 print_frame_args (user_frame_print_options
,
1687 func
, fi
, numargs
, gdb_stdout
);
1694 /* Address of the local variables for this frame, or 0. */
1695 CORE_ADDR arg_list
= get_frame_locals_address (fi
);
1698 gdb_printf (" Locals at unknown address,");
1701 gdb_printf (" Locals at ");
1702 gdb_puts (paddress (gdbarch
, arg_list
));
1707 /* Print as much information as possible on the location of all the
1713 int sp_regnum
= gdbarch_sp_regnum (gdbarch
);
1715 /* The sp is special; what's displayed isn't the save address, but
1716 the value of the previous frame's sp. This is a legacy thing,
1717 at one stage the frame cached the previous frame's SP instead
1718 of its address, hence it was easiest to just display the cached
1722 struct value
*value
= frame_unwind_register_value (fi
, sp_regnum
);
1723 gdb_assert (value
!= NULL
);
1725 if (!value_optimized_out (value
) && value_entirely_available (value
))
1727 if (VALUE_LVAL (value
) == not_lval
)
1730 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
1731 int sp_size
= register_size (gdbarch
, sp_regnum
);
1733 sp
= extract_unsigned_integer
1734 (value_contents_all (value
).data (), sp_size
, byte_order
);
1736 gdb_printf (" Previous frame's sp is ");
1737 gdb_puts (paddress (gdbarch
, sp
));
1740 else if (VALUE_LVAL (value
) == lval_memory
)
1742 gdb_printf (" Previous frame's sp at ");
1743 gdb_puts (paddress (gdbarch
, value_address (value
)));
1746 else if (VALUE_LVAL (value
) == lval_register
)
1748 gdb_printf (" Previous frame's sp in %s\n",
1749 gdbarch_register_name (gdbarch
,
1750 VALUE_REGNUM (value
)));
1753 release_value (value
);
1756 /* else keep quiet. */
1760 numregs
= gdbarch_num_cooked_regs (gdbarch
);
1761 for (i
= 0; i
< numregs
; i
++)
1763 && gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1765 enum lval_type lval
;
1771 /* Find out the location of the saved register without
1772 fetching the corresponding value. */
1773 frame_register_unwind (fi
, i
, &optimized
, &unavailable
,
1774 &lval
, &addr
, &realnum
, NULL
);
1775 /* For moment, only display registers that were saved on the
1777 if (!optimized
&& !unavailable
&& lval
== lval_memory
)
1780 gdb_puts (" Saved registers:\n ");
1783 gdb_stdout
->wrap_here (1);
1784 gdb_printf (" %s at ",
1785 gdbarch_register_name (gdbarch
, i
));
1786 gdb_puts (paddress (gdbarch
, addr
));
1790 if (count
|| need_nl
)
1795 /* Return the innermost frame at level LEVEL. */
1797 static frame_info_ptr
1798 leading_innermost_frame (int level
)
1800 frame_info_ptr leading
;
1802 leading
= get_current_frame ();
1804 gdb_assert (level
>= 0);
1806 while (leading
!= nullptr && level
)
1809 leading
= get_prev_frame (leading
);
1816 /* Return the starting frame needed to handle COUNT outermost frames. */
1818 static frame_info_ptr
1819 trailing_outermost_frame (int count
)
1821 frame_info_ptr current
;
1822 frame_info_ptr trailing
;
1824 trailing
= get_current_frame ();
1826 gdb_assert (count
> 0);
1829 while (current
!= nullptr && count
--)
1832 current
= get_prev_frame (current
);
1835 /* Will stop when CURRENT reaches the top of the stack.
1836 TRAILING will be COUNT below it. */
1837 while (current
!= nullptr)
1840 trailing
= get_prev_frame (trailing
);
1841 current
= get_prev_frame (current
);
1847 /* The core of all the "select-frame" sub-commands. Just wraps a call to
1851 select_frame_command_core (frame_info_ptr fi
, bool ignored
)
1853 frame_info_ptr prev_frame
= get_selected_frame ();
1855 if (get_selected_frame () != prev_frame
)
1856 gdb::observers::user_selected_context_changed
.notify (USER_SELECTED_FRAME
);
1859 /* The core of all the "frame" sub-commands. Select frame FI, and if this
1860 means we change frame send out a change notification (otherwise, just
1861 reprint the current frame summary). */
1864 frame_command_core (frame_info_ptr fi
, bool ignored
)
1866 frame_info_ptr prev_frame
= get_selected_frame ();
1868 if (get_selected_frame () != prev_frame
)
1869 gdb::observers::user_selected_context_changed
.notify (USER_SELECTED_FRAME
);
1871 print_selected_thread_frame (current_uiout
, USER_SELECTED_FRAME
);
1874 /* The three commands 'frame', 'select-frame', and 'info frame' all have a
1875 common set of sub-commands that allow a specific frame to be selected.
1876 All of the sub-command functions are static methods within this class
1877 template which is then instantiated below. The template parameter is a
1878 callback used to implement the functionality of the base command
1879 ('frame', 'select-frame', or 'info frame').
1881 In the template parameter FI is the frame being selected. The
1882 SELECTED_FRAME_P flag is true if the frame being selected was done by
1883 default, which happens when the user uses the base command with no
1884 arguments. For example the commands 'info frame', 'select-frame',
1885 'frame' will all cause SELECTED_FRAME_P to be true. In all other cases
1886 SELECTED_FRAME_P is false. */
1888 template <void (*FPTR
) (frame_info_ptr fi
, bool selected_frame_p
)>
1889 class frame_command_helper
1893 /* The "frame level" family of commands. The ARG is an integer that is
1894 the frame's level in the stack. */
1896 level (const char *arg
, int from_tty
)
1898 int level
= value_as_long (parse_and_eval (arg
));
1900 = find_relative_frame (get_current_frame (), &level
);
1902 error (_("No frame at level %s."), arg
);
1906 /* The "frame address" family of commands. ARG is a stack-pointer
1907 address for an existing frame. This command does not allow new
1908 frames to be created. */
1911 address (const char *arg
, int from_tty
)
1913 CORE_ADDR addr
= value_as_address (parse_and_eval (arg
));
1914 frame_info_ptr fid
= find_frame_for_address (addr
);
1916 error (_("No frame at address %s."), arg
);
1920 /* The "frame view" family of commands. ARG is one or two addresses and
1921 is used to view a frame that might be outside the current backtrace.
1922 The addresses are stack-pointer address, and (optional) pc-address. */
1925 view (const char *args
, int from_tty
)
1930 error (_("Missing address argument to view a frame"));
1932 gdb_argv
argv (args
);
1934 if (argv
.count () == 2)
1938 addr
[0] = value_as_address (parse_and_eval (argv
[0]));
1939 addr
[1] = value_as_address (parse_and_eval (argv
[1]));
1940 fid
= create_new_frame (addr
[0], addr
[1]);
1944 CORE_ADDR addr
= value_as_address (parse_and_eval (argv
[0]));
1945 fid
= create_new_frame (addr
, false);
1950 /* The "frame function" family of commands. ARG is the name of a
1951 function within the stack, the first function (searching from frame
1952 0) with that name will be selected. */
1955 function (const char *arg
, int from_tty
)
1958 error (_("Missing function name argument"));
1959 frame_info_ptr fid
= find_frame_for_function (arg
);
1961 error (_("No frame for function \"%s\"."), arg
);
1965 /* The "frame" base command, that is, when no sub-command is specified.
1966 If one argument is provided then we assume that this is a frame's
1967 level as historically, this was the supported command syntax that was
1970 If no argument is provided, then the current frame is selected. */
1973 base_command (const char *arg
, int from_tty
)
1976 FPTR (get_selected_frame (_("No stack.")), true);
1978 level (arg
, from_tty
);
1982 /* Instantiate three FRAME_COMMAND_HELPER instances to implement the
1983 sub-commands for 'info frame', 'frame', and 'select-frame' commands. */
1985 static frame_command_helper
<info_frame_command_core
> info_frame_cmd
;
1986 static frame_command_helper
<frame_command_core
> frame_cmd
;
1987 static frame_command_helper
<select_frame_command_core
> select_frame_cmd
;
1989 /* Print briefly all stack frames or just the innermost COUNT_EXP
1993 backtrace_command_1 (const frame_print_options
&fp_opts
,
1994 const backtrace_cmd_options
&bt_opts
,
1995 const char *count_exp
, int from_tty
)
2000 int py_start
= 0, py_end
= 0;
2001 enum ext_lang_bt_status result
= EXT_LANG_BT_ERROR
;
2003 if (!target_has_stack ())
2004 error (_("No stack."));
2008 count
= parse_and_eval_long (count_exp
);
2014 /* The argument to apply_ext_lang_frame_filter is the number
2015 of the final frame to print, and frames start at 0. */
2025 frame_filter_flags flags
= 0;
2028 flags
|= PRINT_LOCALS
;
2030 flags
|= PRINT_HIDE
;
2032 if (!bt_opts
.no_filters
)
2034 enum ext_lang_frame_args arg_type
;
2036 flags
|= PRINT_LEVEL
| PRINT_FRAME_INFO
| PRINT_ARGS
;
2038 flags
|= PRINT_MORE_FRAMES
;
2040 if (fp_opts
.print_frame_arguments
== print_frame_arguments_scalars
)
2041 arg_type
= CLI_SCALAR_VALUES
;
2042 else if (fp_opts
.print_frame_arguments
== print_frame_arguments_all
)
2043 arg_type
= CLI_ALL_VALUES
;
2044 else if (fp_opts
.print_frame_arguments
== print_frame_arguments_presence
)
2045 arg_type
= CLI_PRESENCE
;
2046 else if (fp_opts
.print_frame_arguments
== print_frame_arguments_none
)
2047 arg_type
= NO_VALUES
;
2051 result
= apply_ext_lang_frame_filter (get_current_frame (), flags
,
2052 arg_type
, current_uiout
,
2056 /* Run the inbuilt backtrace if there are no filters registered, or
2057 "-no-filters" has been specified from the command. */
2058 if (bt_opts
.no_filters
|| result
== EXT_LANG_BT_NO_FILTERS
)
2060 frame_info_ptr trailing
;
2062 /* The following code must do two things. First, it must set the
2063 variable TRAILING to the frame from which we should start
2064 printing. Second, it must set the variable count to the number
2065 of frames which we should print, or -1 if all of them. */
2067 if (count_exp
!= NULL
&& count
< 0)
2069 trailing
= trailing_outermost_frame (-count
);
2073 trailing
= get_current_frame ();
2075 for (fi
= trailing
; fi
&& count
--; fi
= get_prev_frame (fi
))
2078 fi
.prepare_reinflate ();
2080 /* Don't use print_stack_frame; if an error() occurs it probably
2081 means further attempts to backtrace would fail (on the other
2082 hand, perhaps the code does or could be fixed to make sure
2083 the frame->prev field gets set to NULL in that case). */
2085 print_frame_info (fp_opts
, fi
, 1, LOCATION
, 1, 0);
2086 if ((flags
& PRINT_LOCALS
) != 0)
2087 print_frame_local_vars (fi
, false, NULL
, NULL
, 1, gdb_stdout
);
2089 /* Save the last frame to check for error conditions. */
2094 /* If we've stopped before the end, mention that. */
2096 gdb_printf (_("(More stack frames follow...)\n"));
2098 /* If we've run out of frames, and the reason appears to be an error
2099 condition, print it. */
2100 if (fi
== NULL
&& trailing
!= NULL
)
2102 enum unwind_stop_reason reason
;
2104 reason
= get_frame_unwind_stop_reason (trailing
);
2105 if (reason
>= UNWIND_FIRST_ERROR
)
2106 gdb_printf (_("Backtrace stopped: %s\n"),
2107 frame_stop_reason_string (trailing
));
2112 /* Create an option_def_group array grouping all the "backtrace"
2113 options, with FP_OPTS, BT_CMD_OPT, SET_BT_OPTS as contexts. */
2115 static inline std::array
<gdb::option::option_def_group
, 3>
2116 make_backtrace_options_def_group (frame_print_options
*fp_opts
,
2117 backtrace_cmd_options
*bt_cmd_opts
,
2118 set_backtrace_options
*set_bt_opts
)
2121 { {frame_print_option_defs
}, fp_opts
},
2122 { {set_backtrace_option_defs
}, set_bt_opts
},
2123 { {backtrace_command_option_defs
}, bt_cmd_opts
}
2127 /* Parse the backtrace command's qualifiers. Returns ARG advanced
2128 past the qualifiers, if any. BT_CMD_OPTS, if not null, is used to
2129 store the parsed qualifiers. */
2132 parse_backtrace_qualifiers (const char *arg
,
2133 backtrace_cmd_options
*bt_cmd_opts
= nullptr)
2137 const char *save_arg
= arg
;
2138 std::string this_arg
= extract_arg (&arg
);
2140 if (this_arg
.empty ())
2143 if (startswith ("no-filters", this_arg
))
2145 if (bt_cmd_opts
!= nullptr)
2146 bt_cmd_opts
->no_filters
= true;
2148 else if (startswith ("full", this_arg
))
2150 if (bt_cmd_opts
!= nullptr)
2151 bt_cmd_opts
->full
= true;
2153 else if (startswith ("hide", this_arg
))
2155 if (bt_cmd_opts
!= nullptr)
2156 bt_cmd_opts
->hide
= true;
2160 /* Not a recognized qualifier, so stop. */
2167 backtrace_command (const char *arg
, int from_tty
)
2169 frame_print_options fp_opts
= user_frame_print_options
;
2170 backtrace_cmd_options bt_cmd_opts
;
2171 set_backtrace_options set_bt_opts
= user_set_backtrace_options
;
2174 = make_backtrace_options_def_group (&fp_opts
, &bt_cmd_opts
, &set_bt_opts
);
2175 gdb::option::process_options
2176 (&arg
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
2178 /* Parse non-'-'-prefixed qualifiers, for backwards
2182 arg
= parse_backtrace_qualifiers (arg
, &bt_cmd_opts
);
2187 /* These options are handled quite deep in the unwind machinery, so
2188 we get to pass them down by swapping globals. */
2189 scoped_restore restore_set_backtrace_options
2190 = make_scoped_restore (&user_set_backtrace_options
, set_bt_opts
);
2192 backtrace_command_1 (fp_opts
, bt_cmd_opts
, arg
, from_tty
);
2195 /* Completer for the "backtrace" command. */
2198 backtrace_command_completer (struct cmd_list_element
*ignore
,
2199 completion_tracker
&tracker
,
2200 const char *text
, const char */
*word*/
)
2203 = make_backtrace_options_def_group (nullptr, nullptr, nullptr);
2204 if (gdb::option::complete_options
2205 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
2210 const char *p
= skip_to_space (text
);
2213 static const char *const backtrace_cmd_qualifier_choices
[] = {
2214 "full", "no-filters", "hide", nullptr,
2216 complete_on_enum (tracker
, backtrace_cmd_qualifier_choices
,
2219 if (tracker
.have_completions ())
2224 const char *cmd
= parse_backtrace_qualifiers (text
);
2225 tracker
.advance_custom_word_point_by (cmd
- text
);
2230 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
2231 expression_completer (ignore
, tracker
, text
, word
);
2234 /* Iterate over the local variables of a block B, calling CB. */
2237 iterate_over_block_locals (const struct block
*b
,
2238 iterate_over_block_arg_local_vars_cb cb
)
2240 struct block_iterator iter
;
2243 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2245 switch (sym
->aclass ())
2252 case LOC_OPTIMIZED_OUT
:
2253 if (sym
->is_argument ())
2255 if (sym
->domain () == COMMON_BLOCK_DOMAIN
)
2257 cb (sym
->print_name (), sym
);
2261 /* Ignore symbols which are not locals. */
2267 /* Iterate over all the local variables in block B, including all its
2268 superblocks, stopping when the top-level block is reached. */
2271 iterate_over_block_local_vars (const struct block
*block
,
2272 iterate_over_block_arg_local_vars_cb cb
)
2276 iterate_over_block_locals (block
, cb
);
2277 /* After handling the function's top-level block, stop. Don't
2278 continue to its superblock, the block of per-file
2280 if (block
->function ())
2282 block
= block
->superblock ();
2286 /* Data to be passed around in the calls to the locals and args
2289 struct print_variable_and_value_data
2291 gdb::optional
<compiled_regex
> preg
;
2292 gdb::optional
<compiled_regex
> treg
;
2293 struct frame_id frame_id
;
2295 struct ui_file
*stream
;
2298 void operator() (const char *print_name
, struct symbol
*sym
);
2301 /* The callback for the locals and args iterators. */
2304 print_variable_and_value_data::operator() (const char *print_name
,
2307 frame_info_ptr frame
;
2309 if (preg
.has_value ()
2310 && preg
->exec (sym
->natural_name (), 0, NULL
, 0) != 0)
2312 if (treg
.has_value ()
2313 && !treg_matches_sym_type_name (*treg
, sym
))
2315 if (language_def (sym
->language ())->symbol_printing_suppressed (sym
))
2318 frame
= frame_find_by_id (frame_id
);
2321 warning (_("Unable to restore previously selected frame."));
2325 print_variable_and_value (print_name
, sym
, frame
, stream
, num_tabs
);
2327 /* print_variable_and_value invalidates FRAME. */
2333 /* Prepares the regular expression REG from REGEXP.
2334 If REGEXP is NULL, it results in an empty regular expression. */
2337 prepare_reg (const char *regexp
, gdb::optional
<compiled_regex
> *reg
)
2341 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
2343 reg
->emplace (regexp
, cflags
, _("Invalid regexp"));
2349 /* Print all variables from the innermost up to the function block of FRAME.
2350 Print them with values to STREAM indented by NUM_TABS.
2351 If REGEXP is not NULL, only print local variables whose name
2353 If T_REGEXP is not NULL, only print local variables whose type
2355 If no local variables have been printed and !QUIET, prints a message
2356 explaining why no local variables could be printed.
2358 This function will invalidate FRAME. */
2361 print_frame_local_vars (frame_info_ptr frame
,
2363 const char *regexp
, const char *t_regexp
,
2364 int num_tabs
, struct ui_file
*stream
)
2366 struct print_variable_and_value_data cb_data
;
2367 const struct block
*block
;
2370 if (!get_frame_pc_if_available (frame
, &pc
))
2374 _("PC unavailable, cannot determine locals.\n"));
2378 block
= get_frame_block (frame
, 0);
2382 gdb_printf (stream
, "No symbol table info available.\n");
2386 prepare_reg (regexp
, &cb_data
.preg
);
2387 prepare_reg (t_regexp
, &cb_data
.treg
);
2388 cb_data
.frame_id
= get_frame_id (frame
);
2389 cb_data
.num_tabs
= 4 * num_tabs
;
2390 cb_data
.stream
= stream
;
2391 cb_data
.values_printed
= 0;
2393 /* Temporarily change the selected frame to the given FRAME.
2394 This allows routines that rely on the selected frame instead
2395 of being given a frame as parameter to use the correct frame. */
2396 scoped_restore_selected_frame restore_selected_frame
;
2397 select_frame (frame
);
2399 iterate_over_block_local_vars (block
, cb_data
);
2401 if (!cb_data
.values_printed
&& !quiet
)
2403 if (regexp
== NULL
&& t_regexp
== NULL
)
2404 gdb_printf (stream
, _("No locals.\n"));
2406 gdb_printf (stream
, _("No matching locals.\n"));
2410 /* Structure to hold the values of the options used by the 'info
2411 variables' command and other similar commands. These correspond to the
2412 -q and -t options. */
2414 struct info_print_options
2417 std::string type_regexp
;
2420 /* The options used by the 'info locals' and 'info args' commands. */
2422 static const gdb::option::option_def info_print_options_defs
[] = {
2423 gdb::option::boolean_option_def
<info_print_options
> {
2425 [] (info_print_options
*opt
) { return &opt
->quiet
; },
2426 nullptr, /* show_cmd_cb */
2427 nullptr /* set_doc */
2430 gdb::option::string_option_def
<info_print_options
> {
2432 [] (info_print_options
*opt
) { return &opt
->type_regexp
; },
2433 nullptr, /* show_cmd_cb */
2434 nullptr /* set_doc */
2438 /* Returns the option group used by 'info locals' and 'info args'
2441 static gdb::option::option_def_group
2442 make_info_print_options_def_group (info_print_options
*opts
)
2444 return {{info_print_options_defs
}, opts
};
2447 /* Command completer for 'info locals' and 'info args'. */
2450 info_print_command_completer (struct cmd_list_element
*ignore
,
2451 completion_tracker
&tracker
,
2452 const char *text
, const char * /* word */)
2455 = make_info_print_options_def_group (nullptr);
2456 if (gdb::option::complete_options
2457 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
2460 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
2461 symbol_completer (ignore
, tracker
, text
, word
);
2464 /* Implement the 'info locals' command. */
2467 info_locals_command (const char *args
, int from_tty
)
2469 info_print_options opts
;
2470 auto grp
= make_info_print_options_def_group (&opts
);
2471 gdb::option::process_options
2472 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
2473 if (args
!= nullptr && *args
== '\0')
2476 print_frame_local_vars
2477 (get_selected_frame (_("No frame selected.")),
2479 opts
.type_regexp
.empty () ? nullptr : opts
.type_regexp
.c_str (),
2483 /* Iterate over all the argument variables in block B. */
2486 iterate_over_block_arg_vars (const struct block
*b
,
2487 iterate_over_block_arg_local_vars_cb cb
)
2489 struct block_iterator iter
;
2490 struct symbol
*sym
, *sym2
;
2492 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2494 /* Don't worry about things which aren't arguments. */
2495 if (sym
->is_argument ())
2497 /* We have to look up the symbol because arguments can have
2498 two entries (one a parameter, one a local) and the one we
2499 want is the local, which lookup_symbol will find for us.
2500 This includes gcc1 (not gcc2) on the sparc when passing a
2501 small structure and gcc2 when the argument type is float
2502 and it is passed as a double and converted to float by
2503 the prologue (in the latter case the type of the LOC_ARG
2504 symbol is double and the type of the LOC_LOCAL symbol is
2505 float). There are also LOC_ARG/LOC_REGISTER pairs which
2506 are not combined in symbol-reading. */
2508 sym2
= lookup_symbol_search_name (sym
->search_name (),
2509 b
, VAR_DOMAIN
).symbol
;
2510 cb (sym
->print_name (), sym2
);
2515 /* Print all argument variables of the function of FRAME.
2516 Print them with values to STREAM.
2517 If REGEXP is not NULL, only print argument variables whose name
2519 If T_REGEXP is not NULL, only print argument variables whose type
2521 If no argument variables have been printed and !QUIET, prints a message
2522 explaining why no argument variables could be printed.
2524 This function will invalidate FRAME. */
2527 print_frame_arg_vars (frame_info_ptr frame
,
2529 const char *regexp
, const char *t_regexp
,
2530 struct ui_file
*stream
)
2532 struct print_variable_and_value_data cb_data
;
2533 struct symbol
*func
;
2535 gdb::optional
<compiled_regex
> preg
;
2536 gdb::optional
<compiled_regex
> treg
;
2538 if (!get_frame_pc_if_available (frame
, &pc
))
2542 _("PC unavailable, cannot determine args.\n"));
2546 func
= get_frame_function (frame
);
2550 gdb_printf (stream
, _("No symbol table info available.\n"));
2554 prepare_reg (regexp
, &cb_data
.preg
);
2555 prepare_reg (t_regexp
, &cb_data
.treg
);
2556 cb_data
.frame_id
= get_frame_id (frame
);
2557 cb_data
.num_tabs
= 0;
2558 cb_data
.stream
= stream
;
2559 cb_data
.values_printed
= 0;
2561 iterate_over_block_arg_vars (func
->value_block (), cb_data
);
2563 /* do_print_variable_and_value invalidates FRAME. */
2566 if (!cb_data
.values_printed
&& !quiet
)
2568 if (regexp
== NULL
&& t_regexp
== NULL
)
2569 gdb_printf (stream
, _("No arguments.\n"));
2571 gdb_printf (stream
, _("No matching arguments.\n"));
2575 /* Implement the 'info args' command. */
2578 info_args_command (const char *args
, int from_tty
)
2580 info_print_options opts
;
2581 auto grp
= make_info_print_options_def_group (&opts
);
2582 gdb::option::process_options
2583 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
2584 if (args
!= nullptr && *args
== '\0')
2587 print_frame_arg_vars
2588 (get_selected_frame (_("No frame selected.")),
2590 opts
.type_regexp
.empty () ? nullptr : opts
.type_regexp
.c_str (),
2594 /* Return the symbol-block in which the selected frame is executing.
2595 Can return zero under various legitimate circumstances.
2597 If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant
2598 code address within the block returned. We use this to decide
2599 which macros are in scope. */
2601 const struct block
*
2602 get_selected_block (CORE_ADDR
*addr_in_block
)
2604 if (!has_stack_frames ())
2607 return get_frame_block (get_selected_frame (NULL
), addr_in_block
);
2610 /* Find a frame a certain number of levels away from FRAME.
2611 LEVEL_OFFSET_PTR points to an int containing the number of levels.
2612 Positive means go to earlier frames (up); negative, the reverse.
2613 The int that contains the number of levels is counted toward
2614 zero as the frames for those levels are found.
2615 If the top or bottom frame is reached, that frame is returned,
2616 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
2617 how much farther the original request asked to go. */
2620 find_relative_frame (frame_info_ptr frame
, int *level_offset_ptr
)
2622 /* Going up is simple: just call get_prev_frame enough times or
2623 until the initial frame is reached. */
2624 while (*level_offset_ptr
> 0)
2626 frame_info_ptr prev
= get_prev_frame (frame
);
2630 (*level_offset_ptr
)--;
2634 /* Going down is just as simple. */
2635 while (*level_offset_ptr
< 0)
2637 frame_info_ptr next
= get_next_frame (frame
);
2641 (*level_offset_ptr
)++;
2648 /* Select the frame up one or COUNT_EXP stack levels from the
2649 previously selected frame, and print it briefly. */
2652 up_silently_base (const char *count_exp
)
2654 frame_info_ptr frame
;
2658 count
= parse_and_eval_long (count_exp
);
2660 frame
= find_relative_frame (get_selected_frame ("No stack."), &count
);
2661 if (count
!= 0 && count_exp
== NULL
)
2662 error (_("Initial frame selected; you cannot go up."));
2663 select_frame (frame
);
2667 up_silently_command (const char *count_exp
, int from_tty
)
2669 up_silently_base (count_exp
);
2673 up_command (const char *count_exp
, int from_tty
)
2675 up_silently_base (count_exp
);
2676 gdb::observers::user_selected_context_changed
.notify (USER_SELECTED_FRAME
);
2679 /* Select the frame down one or COUNT_EXP stack levels from the previously
2680 selected frame, and print it briefly. */
2683 down_silently_base (const char *count_exp
)
2685 frame_info_ptr frame
;
2689 count
= -parse_and_eval_long (count_exp
);
2691 frame
= find_relative_frame (get_selected_frame ("No stack."), &count
);
2692 if (count
!= 0 && count_exp
== NULL
)
2694 /* We only do this if COUNT_EXP is not specified. That way
2695 "down" means to really go down (and let me know if that is
2696 impossible), but "down 9999" can be used to mean go all the
2697 way down without getting an error. */
2699 error (_("Bottom (innermost) frame selected; you cannot go down."));
2702 select_frame (frame
);
2706 down_silently_command (const char *count_exp
, int from_tty
)
2708 down_silently_base (count_exp
);
2712 down_command (const char *count_exp
, int from_tty
)
2714 down_silently_base (count_exp
);
2715 gdb::observers::user_selected_context_changed
.notify (USER_SELECTED_FRAME
);
2719 return_command (const char *retval_exp
, int from_tty
)
2721 /* Initialize it just to avoid a GCC false warning. */
2722 enum return_value_convention rv_conv
= RETURN_VALUE_STRUCT_CONVENTION
;
2723 frame_info_ptr thisframe
;
2724 struct gdbarch
*gdbarch
;
2725 struct symbol
*thisfun
;
2726 struct value
*return_value
= NULL
;
2727 struct value
*function
= NULL
;
2728 std::string query_prefix
;
2730 thisframe
= get_selected_frame ("No selected frame.");
2731 thisfun
= get_frame_function (thisframe
);
2732 gdbarch
= get_frame_arch (thisframe
);
2734 if (get_frame_type (get_current_frame ()) == INLINE_FRAME
)
2735 error (_("Can not force return from an inlined function."));
2737 /* Compute the return value. If the computation triggers an error,
2738 let it bail. If the return type can't be handled, set
2739 RETURN_VALUE to NULL, and QUERY_PREFIX to an informational
2743 expression_up retval_expr
= parse_expression (retval_exp
);
2744 struct type
*return_type
= NULL
;
2746 /* Compute the return value. Should the computation fail, this
2747 call throws an error. */
2748 return_value
= evaluate_expression (retval_expr
.get ());
2750 /* Cast return value to the return type of the function. Should
2751 the cast fail, this call throws an error. */
2752 if (thisfun
!= NULL
)
2753 return_type
= thisfun
->type ()->target_type ();
2754 if (return_type
== NULL
)
2756 if (retval_expr
->first_opcode () != UNOP_CAST
2757 && retval_expr
->first_opcode () != UNOP_CAST_TYPE
)
2758 error (_("Return value type not available for selected "
2760 "Please use an explicit cast of the value to return."));
2761 return_type
= value_type (return_value
);
2763 return_type
= check_typedef (return_type
);
2764 return_value
= value_cast (return_type
, return_value
);
2766 /* Make sure the value is fully evaluated. It may live in the
2767 stack frame we're about to pop. */
2768 if (value_lazy (return_value
))
2769 value_fetch_lazy (return_value
);
2771 if (thisfun
!= NULL
)
2772 function
= read_var_value (thisfun
, NULL
, thisframe
);
2774 rv_conv
= RETURN_VALUE_REGISTER_CONVENTION
;
2775 if (return_type
->code () == TYPE_CODE_VOID
)
2776 /* If the return-type is "void", don't try to find the
2777 return-value's location. However, do still evaluate the
2778 return expression so that, even when the expression result
2779 is discarded, side effects such as "return i++" still
2781 return_value
= NULL
;
2782 else if (thisfun
!= NULL
)
2784 if (is_nocall_function (check_typedef (value_type (function
))))
2787 string_printf ("Function '%s' does not follow the target "
2788 "calling convention.\n"
2789 "If you continue, setting the return value "
2790 "will probably lead to unpredictable "
2792 thisfun
->print_name ());
2795 rv_conv
= struct_return_convention (gdbarch
, function
, return_type
);
2796 if (rv_conv
== RETURN_VALUE_STRUCT_CONVENTION
2797 || rv_conv
== RETURN_VALUE_ABI_RETURNS_ADDRESS
)
2799 query_prefix
= "The location at which to store the "
2800 "function's return value is unknown.\n"
2801 "If you continue, the return value "
2802 "that you specified will be ignored.\n";
2803 return_value
= NULL
;
2808 /* Does an interactive user really want to do this? Include
2809 information, such as how well GDB can handle the return value, in
2810 the query message. */
2815 if (thisfun
== NULL
)
2816 confirmed
= query (_("%sMake selected stack frame return now? "),
2817 query_prefix
.c_str ());
2820 if (TYPE_NO_RETURN (thisfun
->type ()))
2821 warning (_("Function does not return normally to caller."));
2822 confirmed
= query (_("%sMake %s return now? "),
2823 query_prefix
.c_str (),
2824 thisfun
->print_name ());
2827 error (_("Not confirmed"));
2830 /* Discard the selected frame and all frames inner-to it. */
2831 frame_pop (get_selected_frame (NULL
));
2833 /* Store RETURN_VALUE in the just-returned register set. */
2834 if (return_value
!= NULL
)
2836 struct type
*return_type
= value_type (return_value
);
2837 struct gdbarch
*cache_arch
= get_current_regcache ()->arch ();
2839 gdb_assert (rv_conv
!= RETURN_VALUE_STRUCT_CONVENTION
2840 && rv_conv
!= RETURN_VALUE_ABI_RETURNS_ADDRESS
);
2841 gdbarch_return_value (cache_arch
, function
, return_type
,
2842 get_current_regcache (), NULL
/*read*/,
2843 value_contents (return_value
).data () /*write*/);
2846 /* If we are at the end of a call dummy now, pop the dummy frame
2848 if (get_frame_type (get_current_frame ()) == DUMMY_FRAME
)
2849 frame_pop (get_current_frame ());
2851 select_frame (get_current_frame ());
2852 /* If interactive, print the frame that is now current. */
2854 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2857 /* Find the most inner frame in the current stack for a function called
2858 FUNCTION_NAME. If no matching frame is found return NULL. */
2860 static frame_info_ptr
2861 find_frame_for_function (const char *function_name
)
2863 /* Used to hold the lower and upper addresses for each of the
2864 SYMTAB_AND_LINEs found for functions matching FUNCTION_NAME. */
2865 struct function_bounds
2867 CORE_ADDR low
, high
;
2869 frame_info_ptr frame
;
2873 gdb_assert (function_name
!= NULL
);
2875 frame
= get_current_frame ();
2876 std::vector
<symtab_and_line
> sals
2877 = decode_line_with_current_source (function_name
,
2878 DECODE_LINE_FUNFIRSTLINE
);
2879 gdb::def_vector
<function_bounds
> func_bounds (sals
.size ());
2880 for (size_t i
= 0; i
< sals
.size (); i
++)
2882 if (sals
[i
].pspace
!= current_program_space
)
2883 func_bounds
[i
].low
= func_bounds
[i
].high
= 0;
2884 else if (sals
[i
].pc
== 0
2885 || find_pc_partial_function (sals
[i
].pc
, NULL
,
2886 &func_bounds
[i
].low
,
2887 &func_bounds
[i
].high
) == 0)
2888 func_bounds
[i
].low
= func_bounds
[i
].high
= 0;
2893 for (size_t i
= 0; (i
< sals
.size () && !found
); i
++)
2894 found
= (get_frame_pc (frame
) >= func_bounds
[i
].low
2895 && get_frame_pc (frame
) < func_bounds
[i
].high
);
2899 frame
= find_relative_frame (frame
, &level
);
2902 while (!found
&& level
== 0);
2910 /* The qcs command line flags for the "frame apply" commands. Keep
2911 this in sync with the "thread apply" commands. */
2913 using qcs_flag_option_def
2914 = gdb::option::flag_option_def
<qcs_flags
>;
2916 static const gdb::option::option_def fr_qcs_flags_option_defs
[] = {
2917 qcs_flag_option_def
{
2918 "q", [] (qcs_flags
*opt
) { return &opt
->quiet
; },
2919 N_("Disables printing the frame location information."),
2922 qcs_flag_option_def
{
2923 "c", [] (qcs_flags
*opt
) { return &opt
->cont
; },
2924 N_("Print any error raised by COMMAND and continue."),
2927 qcs_flag_option_def
{
2928 "s", [] (qcs_flags
*opt
) { return &opt
->silent
; },
2929 N_("Silently ignore any errors or empty output produced by COMMAND."),
2933 /* Create an option_def_group array for all the "frame apply" options,
2934 with FLAGS and SET_BT_OPTS as context. */
2936 static inline std::array
<gdb::option::option_def_group
, 2>
2937 make_frame_apply_options_def_group (qcs_flags
*flags
,
2938 set_backtrace_options
*set_bt_opts
)
2941 { {fr_qcs_flags_option_defs
}, flags
},
2942 { {set_backtrace_option_defs
}, set_bt_opts
},
2946 /* Apply a GDB command to all stack frames, or a set of identified frames,
2947 or innermost COUNT frames.
2948 With a negative COUNT, apply command on outermost -COUNT frames.
2950 frame apply 3 info frame Apply 'info frame' to frames 0, 1, 2
2951 frame apply -3 info frame Apply 'info frame' to outermost 3 frames.
2952 frame apply all x/i $pc Apply 'x/i $pc' cmd to all frames.
2953 frame apply all -s p local_var_no_idea_in_which_frame
2954 If a frame has a local variable called
2955 local_var_no_idea_in_which_frame, print frame
2956 and value of local_var_no_idea_in_which_frame.
2957 frame apply all -s -q p local_var_no_idea_in_which_frame
2958 Same as before, but only print the variable value.
2959 frame apply level 2-5 0 4-7 -s p i = i + 1
2960 Adds 1 to the variable i in the specified frames.
2961 Note that i will be incremented twice in
2964 /* Apply a GDB command to COUNT stack frames, starting at TRAILING.
2965 CMD starts with 0 or more qcs flags followed by the GDB command to apply.
2966 COUNT -1 means all frames starting at TRAILING. WHICH_COMMAND is used
2967 for error messages. */
2970 frame_apply_command_count (const char *which_command
,
2971 const char *cmd
, int from_tty
,
2972 frame_info_ptr trailing
, int count
)
2975 set_backtrace_options set_bt_opts
= user_set_backtrace_options
;
2977 auto group
= make_frame_apply_options_def_group (&flags
, &set_bt_opts
);
2978 gdb::option::process_options
2979 (&cmd
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
);
2981 validate_flags_qcs (which_command
, &flags
);
2983 if (cmd
== NULL
|| *cmd
== '\0')
2984 error (_("Please specify a command to apply on the selected frames"));
2986 /* The below will restore the current inferior/thread/frame.
2987 Usually, only the frame is effectively to be restored.
2988 But in case CMD switches of inferior/thread, better restore
2990 scoped_restore_current_thread restore_thread
;
2992 /* These options are handled quite deep in the unwind machinery, so
2993 we get to pass them down by swapping globals. */
2994 scoped_restore restore_set_backtrace_options
2995 = make_scoped_restore (&user_set_backtrace_options
, set_bt_opts
);
2997 for (frame_info_ptr fi
= trailing
; fi
&& count
--; fi
= get_prev_frame (fi
))
3004 std::string cmd_result
;
3006 /* In case CMD switches of inferior/thread/frame, the below
3007 restores the inferior/thread/frame. FI can then be
3008 set to the selected frame. */
3009 scoped_restore_current_thread restore_fi_current_frame
;
3011 execute_command_to_string
3012 (cmd_result
, cmd
, from_tty
, gdb_stdout
->term_out ());
3014 fi
= get_selected_frame (_("frame apply "
3015 "unable to get selected frame."));
3016 if (!flags
.silent
|| cmd_result
.length () > 0)
3019 print_stack_frame (fi
, 1, LOCATION
, 0);
3020 gdb_printf ("%s", cmd_result
.c_str ());
3023 catch (const gdb_exception_error
&ex
)
3025 fi
= get_selected_frame (_("frame apply "
3026 "unable to get selected frame."));
3030 print_stack_frame (fi
, 1, LOCATION
, 0);
3032 gdb_printf ("%s\n", ex
.what ());
3040 /* Completer for the "frame apply ..." commands. */
3043 frame_apply_completer (completion_tracker
&tracker
, const char *text
)
3045 const auto group
= make_frame_apply_options_def_group (nullptr, nullptr);
3046 if (gdb::option::complete_options
3047 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
3050 complete_nested_command_line (tracker
, text
);
3053 /* Completer for the "frame apply" commands. */
3056 frame_apply_level_cmd_completer (struct cmd_list_element
*ignore
,
3057 completion_tracker
&tracker
,
3058 const char *text
, const char */
*word*/
)
3060 /* Do this explicitly because there's an early return below. */
3061 tracker
.set_use_custom_word_point (true);
3063 number_or_range_parser
levels (text
);
3065 /* Skip the LEVEL list to find the options and command args. */
3068 while (!levels
.finished ())
3070 /* Call for effect. */
3071 levels
.get_number ();
3073 if (levels
.in_range ())
3074 levels
.skip_range ();
3077 catch (const gdb_exception_error
&ex
)
3079 /* get_number throws if it parses a negative number, for
3080 example. But a seemingly negative number may be the start of
3081 an option instead. */
3084 const char *cmd
= levels
.cur_tok ();
3088 /* No level list yet. */
3092 /* Check if we're past a valid LEVEL already. */
3093 if (levels
.finished ()
3094 && cmd
> text
&& !isspace (cmd
[-1]))
3097 /* We're past LEVELs, advance word point. */
3098 tracker
.advance_custom_word_point_by (cmd
- text
);
3101 frame_apply_completer (tracker
, text
);
3104 /* Completer for the "frame apply all" command. */
3107 frame_apply_all_cmd_completer (struct cmd_list_element
*ignore
,
3108 completion_tracker
&tracker
,
3109 const char *text
, const char */
*word*/
)
3111 frame_apply_completer (tracker
, text
);
3114 /* Completer for the "frame apply COUNT" command. */
3117 frame_apply_cmd_completer (struct cmd_list_element
*ignore
,
3118 completion_tracker
&tracker
,
3119 const char *text
, const char */
*word*/
)
3121 const char *cmd
= text
;
3123 int count
= get_number_trailer (&cmd
, 0);
3127 /* Check if we're past a valid COUNT already. */
3128 if (cmd
> text
&& !isspace (cmd
[-1]))
3131 /* We're past COUNT, advance word point. */
3132 tracker
.advance_custom_word_point_by (cmd
- text
);
3135 frame_apply_completer (tracker
, text
);
3138 /* Implementation of the "frame apply level" command. */
3141 frame_apply_level_command (const char *cmd
, int from_tty
)
3143 if (!target_has_stack ())
3144 error (_("No stack."));
3146 bool level_found
= false;
3147 const char *levels_str
= cmd
;
3148 number_or_range_parser
levels (levels_str
);
3150 /* Skip the LEVEL list to find the flags and command args. */
3151 while (!levels
.finished ())
3153 /* Call for effect. */
3154 levels
.get_number ();
3157 if (levels
.in_range ())
3158 levels
.skip_range ();
3162 error (_("Missing or invalid LEVEL... argument"));
3164 cmd
= levels
.cur_tok ();
3166 /* Redo the LEVELS parsing, but applying COMMAND. */
3167 levels
.init (levels_str
);
3168 while (!levels
.finished ())
3170 const int level_beg
= levels
.get_number ();
3173 if (levels
.in_range ())
3175 n_frames
= levels
.end_value () - level_beg
+ 1;
3176 levels
.skip_range ();
3181 frame_apply_command_count ("frame apply level", cmd
, from_tty
,
3182 leading_innermost_frame (level_beg
), n_frames
);
3186 /* Implementation of the "frame apply all" command. */
3189 frame_apply_all_command (const char *cmd
, int from_tty
)
3191 if (!target_has_stack ())
3192 error (_("No stack."));
3194 frame_apply_command_count ("frame apply all", cmd
, from_tty
,
3195 get_current_frame (), INT_MAX
);
3198 /* Implementation of the "frame apply" command. */
3201 frame_apply_command (const char* cmd
, int from_tty
)
3204 frame_info_ptr trailing
;
3206 if (!target_has_stack ())
3207 error (_("No stack."));
3210 error (_("Missing COUNT argument."));
3211 count
= get_number_trailer (&cmd
, 0);
3213 error (_("Invalid COUNT argument."));
3217 trailing
= trailing_outermost_frame (-count
);
3221 trailing
= get_current_frame ();
3223 frame_apply_command_count ("frame apply", cmd
, from_tty
,
3227 /* Implementation of the "faas" command. */
3230 faas_command (const char *cmd
, int from_tty
)
3232 if (cmd
== NULL
|| *cmd
== '\0')
3233 error (_("Please specify a command to apply on all frames"));
3234 std::string expanded
= std::string ("frame apply all -s ") + cmd
;
3235 execute_command (expanded
.c_str (), from_tty
);
3239 /* Find inner-mode frame with frame address ADDRESS. Return NULL if no
3240 matching frame can be found. */
3242 static frame_info_ptr
3243 find_frame_for_address (CORE_ADDR address
)
3248 id
= frame_id_build_wild (address
);
3250 /* If (s)he specifies the frame with an address, he deserves
3251 what (s)he gets. Still, give the highest one that matches.
3252 (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't
3254 for (fid
= get_current_frame ();
3256 fid
= get_prev_frame (fid
))
3258 if (id
== get_frame_id (fid
))
3260 frame_info_ptr prev_frame
;
3264 prev_frame
= get_prev_frame (fid
);
3266 || id
!= get_frame_id (prev_frame
))
3278 /* Commands with a prefix of `frame apply'. */
3279 static struct cmd_list_element
*frame_apply_cmd_list
= NULL
;
3281 /* Commands with a prefix of `frame'. */
3282 static struct cmd_list_element
*frame_cmd_list
= NULL
;
3284 /* Commands with a prefix of `select frame'. */
3285 static struct cmd_list_element
*select_frame_cmd_list
= NULL
;
3287 /* Commands with a prefix of `info frame'. */
3288 static struct cmd_list_element
*info_frame_cmd_list
= NULL
;
3290 void _initialize_stack ();
3292 _initialize_stack ()
3294 struct cmd_list_element
*cmd
;
3296 add_com ("return", class_stack
, return_command
, _("\
3297 Make selected stack frame return to its caller.\n\
3298 Control remains in the debugger, but when you continue\n\
3299 execution will resume in the frame above the one now selected.\n\
3300 If an argument is given, it is an expression for the value to return."));
3302 add_com ("up", class_stack
, up_command
, _("\
3303 Select and print stack frame that called this one.\n\
3304 An argument says how many frames up to go."));
3305 add_com ("up-silently", class_support
, up_silently_command
, _("\
3306 Same as the `up' command, but does not print anything.\n\
3307 This is useful in command scripts."));
3309 cmd_list_element
*down_cmd
3310 = add_com ("down", class_stack
, down_command
, _("\
3311 Select and print stack frame called by this one.\n\
3312 An argument says how many frames down to go."));
3313 add_com_alias ("do", down_cmd
, class_stack
, 1);
3314 add_com_alias ("dow", down_cmd
, class_stack
, 1);
3315 add_com ("down-silently", class_support
, down_silently_command
, _("\
3316 Same as the `down' command, but does not print anything.\n\
3317 This is useful in command scripts."));
3319 cmd_list_element
*frame_cmd_el
3320 = add_prefix_cmd ("frame", class_stack
,
3321 &frame_cmd
.base_command
, _("\
3322 Select and print a stack frame.\n\
3323 With no argument, print the selected stack frame. (See also \"info frame\").\n\
3324 A single numerical argument specifies the frame to select."),
3325 &frame_cmd_list
, 1, &cmdlist
);
3326 add_com_alias ("f", frame_cmd_el
, class_stack
, 1);
3328 #define FRAME_APPLY_OPTION_HELP "\
3329 Prints the frame location information followed by COMMAND output.\n\
3331 By default, an error raised during the execution of COMMAND\n\
3332 aborts \"frame apply\".\n\
3337 const auto frame_apply_opts
3338 = make_frame_apply_options_def_group (nullptr, nullptr);
3340 static std::string frame_apply_cmd_help
= gdb::option::build_help (_("\
3341 Apply a command to a number of frames.\n\
3342 Usage: frame apply COUNT [OPTION]... COMMAND\n\
3343 With a negative COUNT argument, applies the command on outermost -COUNT frames.\n"
3344 FRAME_APPLY_OPTION_HELP
),
3347 cmd
= add_prefix_cmd ("apply", class_stack
, frame_apply_command
,
3348 frame_apply_cmd_help
.c_str (),
3349 &frame_apply_cmd_list
, 1,
3351 set_cmd_completer_handle_brkchars (cmd
, frame_apply_cmd_completer
);
3353 static std::string frame_apply_all_cmd_help
= gdb::option::build_help (_("\
3354 Apply a command to all frames.\n\
3356 Usage: frame apply all [OPTION]... COMMAND\n"
3357 FRAME_APPLY_OPTION_HELP
),
3360 cmd
= add_cmd ("all", class_stack
, frame_apply_all_command
,
3361 frame_apply_all_cmd_help
.c_str (),
3362 &frame_apply_cmd_list
);
3363 set_cmd_completer_handle_brkchars (cmd
, frame_apply_all_cmd_completer
);
3365 static std::string frame_apply_level_cmd_help
= gdb::option::build_help (_("\
3366 Apply a command to a list of frames.\n\
3368 Usage: frame apply level LEVEL... [OPTION]... COMMAND\n\
3369 LEVEL is a space-separated list of levels of frames to apply COMMAND on.\n"
3370 FRAME_APPLY_OPTION_HELP
),
3373 cmd
= add_cmd ("level", class_stack
, frame_apply_level_command
,
3374 frame_apply_level_cmd_help
.c_str (),
3375 &frame_apply_cmd_list
);
3376 set_cmd_completer_handle_brkchars (cmd
, frame_apply_level_cmd_completer
);
3378 cmd
= add_com ("faas", class_stack
, faas_command
, _("\
3379 Apply a command to all frames (ignoring errors and empty output).\n\
3380 Usage: faas [OPTION]... COMMAND\n\
3381 shortcut for 'frame apply all -s [OPTION]... COMMAND'\n\
3382 See \"help frame apply all\" for available options."));
3383 set_cmd_completer_handle_brkchars (cmd
, frame_apply_all_cmd_completer
);
3385 add_cmd ("address", class_stack
, &frame_cmd
.address
,
3387 Select and print a stack frame by stack address.\n\
3389 Usage: frame address STACK-ADDRESS"),
3392 add_cmd ("view", class_stack
, &frame_cmd
.view
,
3394 View a stack frame that might be outside the current backtrace.\n\
3396 Usage: frame view STACK-ADDRESS\n\
3397 frame view STACK-ADDRESS PC-ADDRESS"),
3400 cmd
= add_cmd ("function", class_stack
, &frame_cmd
.function
,
3402 Select and print a stack frame by function name.\n\
3404 Usage: frame function NAME\n\
3406 The innermost frame that visited function NAME is selected."),
3408 set_cmd_completer (cmd
, frame_selection_by_function_completer
);
3411 add_cmd ("level", class_stack
, &frame_cmd
.level
,
3413 Select and print a stack frame by level.\n\
3415 Usage: frame level LEVEL"),
3418 cmd
= add_prefix_cmd_suppress_notification ("select-frame", class_stack
,
3419 &select_frame_cmd
.base_command
, _("\
3420 Select a stack frame without printing anything.\n\
3421 A single numerical argument specifies the frame to select."),
3422 &select_frame_cmd_list
, 1, &cmdlist
,
3423 &cli_suppress_notification
.user_selected_context
);
3425 add_cmd_suppress_notification ("address", class_stack
,
3426 &select_frame_cmd
.address
, _("\
3427 Select a stack frame by stack address.\n\
3429 Usage: select-frame address STACK-ADDRESS"),
3430 &select_frame_cmd_list
,
3431 &cli_suppress_notification
.user_selected_context
);
3434 add_cmd_suppress_notification ("view", class_stack
,
3435 &select_frame_cmd
.view
, _("\
3436 Select a stack frame that might be outside the current backtrace.\n\
3438 Usage: select-frame view STACK-ADDRESS\n\
3439 select-frame view STACK-ADDRESS PC-ADDRESS"),
3440 &select_frame_cmd_list
,
3441 &cli_suppress_notification
.user_selected_context
);
3443 cmd
= add_cmd_suppress_notification ("function", class_stack
,
3444 &select_frame_cmd
.function
, _("\
3445 Select a stack frame by function name.\n\
3447 Usage: select-frame function NAME"),
3448 &select_frame_cmd_list
,
3449 &cli_suppress_notification
.user_selected_context
);
3450 set_cmd_completer (cmd
, frame_selection_by_function_completer
);
3452 add_cmd_suppress_notification ("level", class_stack
,
3453 &select_frame_cmd
.level
, _("\
3454 Select a stack frame by level.\n\
3456 Usage: select-frame level LEVEL"),
3457 &select_frame_cmd_list
,
3458 &cli_suppress_notification
.user_selected_context
);
3460 const auto backtrace_opts
3461 = make_backtrace_options_def_group (nullptr, nullptr, nullptr);
3463 static std::string backtrace_help
3464 = gdb::option::build_help (_("\
3465 Print backtrace of all stack frames, or innermost COUNT frames.\n\
3466 Usage: backtrace [OPTION]... [QUALIFIER]... [COUNT | -COUNT]\n\
3471 For backward compatibility, the following qualifiers are supported:\n\
3473 full - same as -full option.\n\
3474 no-filters - same as -no-filters option.\n\
3475 hide - same as -hide.\n\
3477 With a negative COUNT, print outermost -COUNT frames."),
3480 cmd_list_element
*backtrace_cmd
3481 = add_com ("backtrace", class_stack
, backtrace_command
,
3482 backtrace_help
.c_str ());
3483 set_cmd_completer_handle_brkchars (backtrace_cmd
, backtrace_command_completer
);
3485 add_com_alias ("bt", backtrace_cmd
, class_stack
, 0);
3487 add_com_alias ("where", backtrace_cmd
, class_stack
, 0);
3488 cmd_list_element
*info_stack_cmd
3489 = add_info ("stack", backtrace_command
,
3490 _("Backtrace of the stack, or innermost COUNT frames."));
3491 add_info_alias ("s", info_stack_cmd
, 1);
3493 cmd_list_element
*info_frame_cmd_el
3494 = add_prefix_cmd ("frame", class_info
, &info_frame_cmd
.base_command
,
3495 _("All about the selected stack frame.\n\
3496 With no arguments, displays information about the currently selected stack\n\
3497 frame. Alternatively a frame specification may be provided (See \"frame\")\n\
3498 the information is then printed about the specified frame."),
3499 &info_frame_cmd_list
, 1, &infolist
);
3500 add_info_alias ("f", info_frame_cmd_el
, 1);
3502 add_cmd ("address", class_stack
, &info_frame_cmd
.address
,
3504 Print information about a stack frame selected by stack address.\n\
3506 Usage: info frame address STACK-ADDRESS"),
3507 &info_frame_cmd_list
);
3509 add_cmd ("view", class_stack
, &info_frame_cmd
.view
,
3511 Print information about a stack frame outside the current backtrace.\n\
3513 Usage: info frame view STACK-ADDRESS\n\
3514 info frame view STACK-ADDRESS PC-ADDRESS"),
3515 &info_frame_cmd_list
);
3517 cmd
= add_cmd ("function", class_stack
, &info_frame_cmd
.function
,
3519 Print information about a stack frame selected by function name.\n\
3521 Usage: info frame function NAME"),
3522 &info_frame_cmd_list
);
3523 set_cmd_completer (cmd
, frame_selection_by_function_completer
);
3525 add_cmd ("level", class_stack
, &info_frame_cmd
.level
,
3527 Print information about a stack frame selected by level.\n\
3529 Usage: info frame level LEVEL"),
3530 &info_frame_cmd_list
);
3532 cmd
= add_info ("locals", info_locals_command
,
3533 info_print_args_help (_("\
3534 All local variables of current stack frame or those matching REGEXPs.\n\
3535 Usage: info locals [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\
3536 Prints the local variables of the current stack frame.\n"),
3537 _("local variables"),
3539 set_cmd_completer_handle_brkchars (cmd
, info_print_command_completer
);
3540 cmd
= add_info ("args", info_args_command
,
3541 info_print_args_help (_("\
3542 All argument variables of current stack frame or those matching REGEXPs.\n\
3543 Usage: info args [-q] [-t TYPEREGEXP] [NAMEREGEXP]\n\
3544 Prints the argument variables of the current stack frame.\n"),
3545 _("argument variables"),
3547 set_cmd_completer_handle_brkchars (cmd
, info_print_command_completer
);
3549 /* Install "set print raw frame-arguments", a deprecated spelling of
3550 "set print raw-frame-arguments". */
3551 set_show_commands set_show_frame_args
3552 = add_setshow_boolean_cmd
3553 ("frame-arguments", no_class
,
3554 &user_frame_print_options
.print_raw_frame_arguments
,
3556 Set whether to print frame arguments in raw form."), _("\
3557 Show whether to print frame arguments in raw form."), _("\
3558 If set, frame arguments are printed in raw form, bypassing any\n\
3559 pretty-printers for that value."),
3561 &setprintrawlist
, &showprintrawlist
);
3562 deprecate_cmd (set_show_frame_args
.set
, "set print raw-frame-arguments");
3564 add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack
,
3565 &disassemble_next_line
, _("\
3566 Set whether to disassemble next source line or insn when execution stops."),
3568 Show whether to disassemble next source line or insn when execution stops."),
3570 If ON, GDB will display disassembly of the next source line, in addition\n\
3571 to displaying the source line itself. If the next source line cannot\n\
3572 be displayed (e.g., source is unavailable or there's no line info), GDB\n\
3573 will display disassembly of next instruction instead of showing the\n\
3575 If AUTO, display disassembly of next instruction only if the source line\n\
3576 cannot be displayed.\n\
3577 If OFF (which is the default), never display the disassembly of the next\n\
3580 show_disassemble_next_line
,
3581 &setlist
, &showlist
);
3582 disassemble_next_line
= AUTO_BOOLEAN_FALSE
;
3584 gdb::option::add_setshow_cmds_for_options
3585 (class_stack
, &user_frame_print_options
,
3586 frame_print_option_defs
, &setprintlist
, &showprintlist
);