1 /* Print and select stack frames for GDB, the GNU debugger.
3 Copyright (C) 1986-2013 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 "exceptions.h"
40 #include "reggroups.h"
44 #include "gdbthread.h"
45 #include "cp-support.h"
47 #include "inline-frame.h"
49 #include "cli/cli-utils.h"
51 #include "gdb_assert.h"
53 #include "gdb_string.h"
58 void (*deprecated_selected_frame_level_changed_hook
) (int);
60 /* The possible choices of "set print frame-arguments", and the value
63 static const char *const print_frame_arguments_choices
[] =
64 {"all", "scalars", "none", NULL
};
65 static const char *print_frame_arguments
= "scalars";
67 /* The possible choices of "set print entry-values", and the value
70 const char print_entry_values_no
[] = "no";
71 const char print_entry_values_only
[] = "only";
72 const char print_entry_values_preferred
[] = "preferred";
73 const char print_entry_values_if_needed
[] = "if-needed";
74 const char print_entry_values_both
[] = "both";
75 const char print_entry_values_compact
[] = "compact";
76 const char print_entry_values_default
[] = "default";
77 static const char *const print_entry_values_choices
[] =
79 print_entry_values_no
,
80 print_entry_values_only
,
81 print_entry_values_preferred
,
82 print_entry_values_if_needed
,
83 print_entry_values_both
,
84 print_entry_values_compact
,
85 print_entry_values_default
,
88 const char *print_entry_values
= print_entry_values_default
;
90 /* Prototypes for local functions. */
92 static void print_frame_local_vars (struct frame_info
*, int,
95 static void print_frame (struct frame_info
*frame
, int print_level
,
96 enum print_what print_what
, int print_args
,
97 struct symtab_and_line sal
);
99 static void set_last_displayed_sal (int valid
,
100 struct program_space
*pspace
,
102 struct symtab
*symtab
,
105 /* Zero means do things normally; we are interacting directly with the
106 user. One means print the full filename and linenumber when a
107 frame is printed, and do so in a format emacs18/emacs19.22 can
108 parse. Two means print similar annotations, but in many more
109 cases and in a slightly different syntax. */
111 int annotation_level
= 0;
113 /* These variables hold the last symtab and line we displayed to the user.
114 * This is where we insert a breakpoint or a skiplist entry by default. */
115 static int last_displayed_sal_valid
= 0;
116 static struct program_space
*last_displayed_pspace
= 0;
117 static CORE_ADDR last_displayed_addr
= 0;
118 static struct symtab
*last_displayed_symtab
= 0;
119 static int last_displayed_line
= 0;
122 /* Return 1 if we should display the address in addition to the location,
123 because we are in the middle of a statement. */
126 frame_show_address (struct frame_info
*frame
,
127 struct symtab_and_line sal
)
129 /* If there is a line number, but no PC, then there is no location
130 information associated with this sal. The only way that should
131 happen is for the call sites of inlined functions (SAL comes from
132 find_frame_sal). Otherwise, we would have some PC range if the
133 SAL came from a line table. */
134 if (sal
.line
!= 0 && sal
.pc
== 0 && sal
.end
== 0)
136 if (get_next_frame (frame
) == NULL
)
137 gdb_assert (inline_skipped_frames (inferior_ptid
) > 0);
139 gdb_assert (get_frame_type (get_next_frame (frame
)) == INLINE_FRAME
);
143 return get_frame_pc (frame
) != sal
.pc
;
146 /* Show or print a stack frame FRAME briefly. The output is format
147 according to PRINT_LEVEL and PRINT_WHAT printing the frame's
148 relative level, function name, argument list, and file name and
149 line number. If the frame's PC is not at the beginning of the
150 source line, the actual PC is printed at the beginning. */
153 print_stack_frame (struct frame_info
*frame
, int print_level
,
154 enum print_what print_what
)
156 volatile struct gdb_exception e
;
158 /* For mi, alway print location and address. */
159 if (ui_out_is_mi_like_p (current_uiout
))
160 print_what
= LOC_AND_ADDRESS
;
162 TRY_CATCH (e
, RETURN_MASK_ERROR
)
164 int center
= (print_what
== SRC_LINE
|| print_what
== SRC_AND_LOC
);
166 print_frame_info (frame
, print_level
, print_what
, 1 /* print_args */);
167 set_current_sal_from_frame (frame
, center
);
171 /* Print nameless arguments of frame FRAME on STREAM, where START is
172 the offset of the first nameless argument, and NUM is the number of
173 nameless arguments to print. FIRST is nonzero if this is the first
174 argument (not just the first nameless argument). */
177 print_frame_nameless_args (struct frame_info
*frame
, long start
, int num
,
178 int first
, struct ui_file
*stream
)
180 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
181 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
186 for (i
= 0; i
< num
; i
++)
189 argsaddr
= get_frame_args_address (frame
);
192 arg_value
= read_memory_integer (argsaddr
+ start
,
193 sizeof (int), byte_order
);
195 fprintf_filtered (stream
, ", ");
196 fprintf_filtered (stream
, "%ld", arg_value
);
198 start
+= sizeof (int);
202 /* Print single argument of inferior function. ARG must be already
205 Errors are printed as if they would be the parameter value. Use zeroed ARG
206 iff it should not be printed accoring to user settings. */
209 print_frame_arg (const struct frame_arg
*arg
)
211 struct ui_out
*uiout
= current_uiout
;
212 volatile struct gdb_exception except
;
213 struct cleanup
*old_chain
;
216 stb
= mem_fileopen ();
217 old_chain
= make_cleanup_ui_file_delete (stb
);
219 gdb_assert (!arg
->val
|| !arg
->error
);
220 gdb_assert (arg
->entry_kind
== print_entry_values_no
221 || arg
->entry_kind
== print_entry_values_only
222 || (!ui_out_is_mi_like_p (uiout
)
223 && arg
->entry_kind
== print_entry_values_compact
));
225 annotate_arg_begin ();
227 make_cleanup_ui_out_tuple_begin_end (uiout
, NULL
);
228 fprintf_symbol_filtered (stb
, SYMBOL_PRINT_NAME (arg
->sym
),
229 SYMBOL_LANGUAGE (arg
->sym
), DMGL_PARAMS
| DMGL_ANSI
);
230 if (arg
->entry_kind
== print_entry_values_compact
)
232 /* It is OK to provide invalid MI-like stream as with
233 PRINT_ENTRY_VALUE_COMPACT we never use MI. */
234 fputs_filtered ("=", stb
);
236 fprintf_symbol_filtered (stb
, SYMBOL_PRINT_NAME (arg
->sym
),
237 SYMBOL_LANGUAGE (arg
->sym
),
238 DMGL_PARAMS
| DMGL_ANSI
);
240 if (arg
->entry_kind
== print_entry_values_only
241 || arg
->entry_kind
== print_entry_values_compact
)
242 fputs_filtered ("@entry", stb
);
243 ui_out_field_stream (uiout
, "name", stb
);
244 annotate_arg_name_end ();
245 ui_out_text (uiout
, "=");
247 if (!arg
->val
&& !arg
->error
)
248 ui_out_text (uiout
, "...");
252 except
.message
= arg
->error
;
255 /* TRY_CATCH has two statements, wrap it in a block. */
257 TRY_CATCH (except
, RETURN_MASK_ERROR
)
259 const struct language_defn
*language
;
260 struct value_print_options opts
;
262 /* Avoid value_print because it will deref ref parameters. We
263 just want to print their addresses. Print ??? for args whose
264 address we do not know. We pass 2 as "recurse" to val_print
265 because our standard indentation here is 4 spaces, and
266 val_print indents 2 for each recurse. */
268 annotate_arg_value (value_type (arg
->val
));
270 /* Use the appropriate language to display our symbol, unless the
271 user forced the language to a specific language. */
272 if (language_mode
== language_mode_auto
)
273 language
= language_def (SYMBOL_LANGUAGE (arg
->sym
));
275 language
= current_language
;
277 get_raw_print_options (&opts
);
280 /* True in "summary" mode, false otherwise. */
281 opts
.summary
= !strcmp (print_frame_arguments
, "scalars");
283 common_val_print (arg
->val
, stb
, 2, &opts
, language
);
287 fprintf_filtered (stb
, _("<error reading variable: %s>"),
291 ui_out_field_stream (uiout
, "value", stb
);
293 /* Also invoke ui_out_tuple_end. */
294 do_cleanups (old_chain
);
299 /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is
300 responsible for xfree of ARGP->ERROR. This function never throws an
304 read_frame_arg (struct symbol
*sym
, struct frame_info
*frame
,
305 struct frame_arg
*argp
, struct frame_arg
*entryargp
)
307 struct value
*val
= NULL
, *entryval
= NULL
;
308 char *val_error
= NULL
, *entryval_error
= NULL
;
310 volatile struct gdb_exception except
;
312 if (print_entry_values
!= print_entry_values_only
313 && print_entry_values
!= print_entry_values_preferred
)
315 TRY_CATCH (except
, RETURN_MASK_ERROR
)
317 val
= read_var_value (sym
, frame
);
321 val_error
= alloca (strlen (except
.message
) + 1);
322 strcpy (val_error
, except
.message
);
326 if (SYMBOL_COMPUTED_OPS (sym
) != NULL
327 && SYMBOL_COMPUTED_OPS (sym
)->read_variable_at_entry
!= NULL
328 && print_entry_values
!= print_entry_values_no
329 && (print_entry_values
!= print_entry_values_if_needed
330 || !val
|| value_optimized_out (val
)))
332 TRY_CATCH (except
, RETURN_MASK_ERROR
)
334 const struct symbol_computed_ops
*ops
;
336 ops
= SYMBOL_COMPUTED_OPS (sym
);
337 entryval
= ops
->read_variable_at_entry (sym
, frame
);
341 entryval_error
= alloca (strlen (except
.message
) + 1);
342 strcpy (entryval_error
, except
.message
);
345 if (except
.error
== NO_ENTRY_VALUE_ERROR
346 || (entryval
&& value_optimized_out (entryval
)))
349 entryval_error
= NULL
;
352 if (print_entry_values
== print_entry_values_compact
353 || print_entry_values
== print_entry_values_default
)
355 /* For MI do not try to use print_entry_values_compact for ARGP. */
357 if (val
&& entryval
&& !ui_out_is_mi_like_p (current_uiout
))
359 struct type
*type
= value_type (val
);
361 if (!value_optimized_out (val
) && value_lazy (val
))
362 value_fetch_lazy (val
);
363 if (!value_optimized_out (val
) && value_lazy (entryval
))
364 value_fetch_lazy (entryval
);
365 if (!value_optimized_out (val
)
366 && value_available_contents_eq (val
, 0, entryval
, 0,
369 /* Initialize it just to avoid a GCC false warning. */
370 struct value
*val_deref
= NULL
, *entryval_deref
;
372 /* DW_AT_GNU_call_site_value does match with the current
373 value. If it is a reference still try to verify if
374 dereferenced DW_AT_GNU_call_site_data_value does not
377 TRY_CATCH (except
, RETURN_MASK_ERROR
)
379 struct type
*type_deref
;
381 val_deref
= coerce_ref (val
);
382 if (value_lazy (val_deref
))
383 value_fetch_lazy (val_deref
);
384 type_deref
= value_type (val_deref
);
386 entryval_deref
= coerce_ref (entryval
);
387 if (value_lazy (entryval_deref
))
388 value_fetch_lazy (entryval_deref
);
390 /* If the reference addresses match but dereferenced
391 content does not match print them. */
393 && value_available_contents_eq (val_deref
, 0,
395 TYPE_LENGTH (type_deref
)))
399 /* Value was not a reference; and its content matches. */
400 if (val
== val_deref
)
402 /* If the dereferenced content could not be fetched do not
404 else if (except
.error
== NO_ENTRY_VALUE_ERROR
)
406 else if (except
.message
)
408 entryval_error
= alloca (strlen (except
.message
) + 1);
409 strcpy (entryval_error
, except
.message
);
417 /* Try to remove possibly duplicate error message for ENTRYARGP even
420 if (val_error
&& entryval_error
421 && strcmp (val_error
, entryval_error
) == 0)
423 entryval_error
= NULL
;
425 /* Do not se VAL_EQUAL as the same error message may be shown for
426 the entry value even if no entry values are present in the
432 if (entryval
== NULL
)
434 if (print_entry_values
== print_entry_values_preferred
)
436 TRY_CATCH (except
, RETURN_MASK_ERROR
)
438 val
= read_var_value (sym
, frame
);
442 val_error
= alloca (strlen (except
.message
) + 1);
443 strcpy (val_error
, except
.message
);
446 if (print_entry_values
== print_entry_values_only
447 || print_entry_values
== print_entry_values_both
448 || (print_entry_values
== print_entry_values_preferred
449 && (!val
|| value_optimized_out (val
))))
450 entryval
= allocate_optimized_out_value (SYMBOL_TYPE (sym
));
452 if ((print_entry_values
== print_entry_values_compact
453 || print_entry_values
== print_entry_values_if_needed
454 || print_entry_values
== print_entry_values_preferred
)
455 && (!val
|| value_optimized_out (val
)) && entryval
!= NULL
)
463 argp
->error
= val_error
? xstrdup (val_error
) : NULL
;
464 if (!val
&& !val_error
)
465 argp
->entry_kind
= print_entry_values_only
;
466 else if ((print_entry_values
== print_entry_values_compact
467 || print_entry_values
== print_entry_values_default
) && val_equal
)
469 argp
->entry_kind
= print_entry_values_compact
;
470 gdb_assert (!ui_out_is_mi_like_p (current_uiout
));
473 argp
->entry_kind
= print_entry_values_no
;
475 entryargp
->sym
= sym
;
476 entryargp
->val
= entryval
;
477 entryargp
->error
= entryval_error
? xstrdup (entryval_error
) : NULL
;
478 if (!entryval
&& !entryval_error
)
479 entryargp
->entry_kind
= print_entry_values_no
;
481 entryargp
->entry_kind
= print_entry_values_only
;
484 /* Print the arguments of frame FRAME on STREAM, given the function
485 FUNC running in that frame (as a symbol), where NUM is the number
486 of arguments according to the stack frame (or -1 if the number of
487 arguments is unknown). */
489 /* Note that currently the "number of arguments according to the
490 stack frame" is only known on VAX where i refers to the "number of
491 ints of arguments according to the stack frame". */
494 print_frame_args (struct symbol
*func
, struct frame_info
*frame
,
495 int num
, struct ui_file
*stream
)
497 struct ui_out
*uiout
= current_uiout
;
499 /* Offset of next stack argument beyond the one we have seen that is
500 at the highest offset, or -1 if we haven't come to a stack
502 long highest_offset
= -1;
503 /* Number of ints of arguments that we have printed so far. */
504 int args_printed
= 0;
505 struct cleanup
*old_chain
;
507 /* True if we should print arguments, false otherwise. */
508 int print_args
= strcmp (print_frame_arguments
, "none");
510 stb
= mem_fileopen ();
511 old_chain
= make_cleanup_ui_file_delete (stb
);
515 struct block
*b
= SYMBOL_BLOCK_VALUE (func
);
516 struct block_iterator iter
;
519 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
521 struct frame_arg arg
, entryarg
;
525 /* Keep track of the highest stack argument offset seen, and
526 skip over any kinds of symbols we don't care about. */
528 if (!SYMBOL_IS_ARGUMENT (sym
))
531 switch (SYMBOL_CLASS (sym
))
536 long current_offset
= SYMBOL_VALUE (sym
);
537 int arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
539 /* Compute address of next argument by adding the size of
540 this argument and rounding to an int boundary. */
542 ((current_offset
+ arg_size
+ sizeof (int) - 1)
543 & ~(sizeof (int) - 1));
545 /* If this is the highest offset seen yet, set
547 if (highest_offset
== -1
548 || (current_offset
> highest_offset
))
549 highest_offset
= current_offset
;
551 /* Add the number of ints we're about to print to
553 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
556 /* We care about types of symbols, but don't need to
557 keep track of stack offsets in them. */
559 case LOC_REGPARM_ADDR
:
561 case LOC_OPTIMIZED_OUT
:
566 /* We have to look up the symbol because arguments can have
567 two entries (one a parameter, one a local) and the one we
568 want is the local, which lookup_symbol will find for us.
569 This includes gcc1 (not gcc2) on SPARC when passing a
570 small structure and gcc2 when the argument type is float
571 and it is passed as a double and converted to float by
572 the prologue (in the latter case the type of the LOC_ARG
573 symbol is double and the type of the LOC_LOCAL symbol is
575 /* But if the parameter name is null, don't try it. Null
576 parameter names occur on the RS/6000, for traceback
577 tables. FIXME, should we even print them? */
579 if (*SYMBOL_LINKAGE_NAME (sym
))
583 nsym
= lookup_symbol (SYMBOL_LINKAGE_NAME (sym
),
584 b
, VAR_DOMAIN
, NULL
);
585 gdb_assert (nsym
!= NULL
);
586 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
587 && !SYMBOL_IS_ARGUMENT (nsym
))
589 /* There is a LOC_ARG/LOC_REGISTER pair. This means
590 that it was passed on the stack and loaded into a
591 register, or passed in a register and stored in a
592 stack slot. GDB 3.x used the LOC_ARG; GDB
593 4.0-4.11 used the LOC_REGISTER.
595 Reasons for using the LOC_ARG:
597 (1) Because find_saved_registers may be slow for
600 (2) Because registers are often re-used and stack
601 slots rarely (never?) are. Therefore using
602 the stack slot is much less likely to print
605 Reasons why we might want to use the LOC_REGISTER:
607 (1) So that the backtrace prints the same value
608 as "print foo". I see no compelling reason
609 why this needs to be the case; having the
610 backtrace print the value which was passed
611 in, and "print foo" print the value as
612 modified within the called function, makes
615 Additional note: It might be nice if "info args"
616 displayed both values.
618 One more note: There is a case with SPARC
619 structure passing where we need to use the
620 LOC_REGISTER, but this is dealt with by creating
621 a single LOC_REGPARM in symbol reading. */
623 /* Leave sym (the LOC_ARG) alone. */
630 /* Print the current arg. */
632 ui_out_text (uiout
, ", ");
633 ui_out_wrap_hint (uiout
, " ");
637 memset (&arg
, 0, sizeof (arg
));
639 arg
.entry_kind
= print_entry_values_no
;
640 memset (&entryarg
, 0, sizeof (entryarg
));
642 entryarg
.entry_kind
= print_entry_values_no
;
645 read_frame_arg (sym
, frame
, &arg
, &entryarg
);
647 if (arg
.entry_kind
!= print_entry_values_only
)
648 print_frame_arg (&arg
);
650 if (entryarg
.entry_kind
!= print_entry_values_no
)
652 if (arg
.entry_kind
!= print_entry_values_only
)
654 ui_out_text (uiout
, ", ");
655 ui_out_wrap_hint (uiout
, " ");
658 print_frame_arg (&entryarg
);
662 xfree (entryarg
.error
);
668 /* Don't print nameless args in situations where we don't know
669 enough about the stack to find them. */
674 if (highest_offset
== -1)
675 start
= gdbarch_frame_args_skip (get_frame_arch (frame
));
677 start
= highest_offset
;
679 print_frame_nameless_args (frame
, start
, num
- args_printed
,
683 do_cleanups (old_chain
);
686 /* Set the current source and line to the location given by frame
687 FRAME, if possible. When CENTER is true, adjust so the relevant
688 line is in the center of the next 'list'. */
691 set_current_sal_from_frame (struct frame_info
*frame
, int center
)
693 struct symtab_and_line sal
;
695 find_frame_sal (frame
, &sal
);
699 sal
.line
= max (sal
.line
- get_lines_to_list () / 2, 1);
700 set_current_source_symtab_and_line (&sal
);
704 /* If ON, GDB will display disassembly of the next source line when
705 execution of the program being debugged stops.
706 If AUTO (which is the default), or there's no line info to determine
707 the source line of the next instruction, display disassembly of next
708 instruction instead. */
710 static enum auto_boolean disassemble_next_line
;
713 show_disassemble_next_line (struct ui_file
*file
, int from_tty
,
714 struct cmd_list_element
*c
,
717 fprintf_filtered (file
,
718 _("Debugger's willingness to use "
719 "disassemble-next-line is %s.\n"),
723 /* Use TRY_CATCH to catch the exception from the gdb_disassembly
724 because it will be broken by filter sometime. */
727 do_gdb_disassembly (struct gdbarch
*gdbarch
,
728 int how_many
, CORE_ADDR low
, CORE_ADDR high
)
730 volatile struct gdb_exception exception
;
732 TRY_CATCH (exception
, RETURN_MASK_ERROR
)
734 gdb_disassembly (gdbarch
, current_uiout
, 0,
735 DISASSEMBLY_RAW_INSN
, how_many
,
738 if (exception
.reason
< 0)
740 /* If an exception was thrown while doing the disassembly, print
741 the error message, to give the user a clue of what happened. */
742 exception_print (gdb_stderr
, exception
);
746 /* Print information about frame FRAME. The output is format according
747 to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of
750 SRC_LINE: Print only source line.
751 LOCATION: Print only location.
752 LOC_AND_SRC: Print location and source line.
754 Used in "where" output, and to emit breakpoint or step
758 print_frame_info (struct frame_info
*frame
, int print_level
,
759 enum print_what print_what
, int print_args
)
761 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
762 struct symtab_and_line sal
;
765 struct ui_out
*uiout
= current_uiout
;
767 if (get_frame_type (frame
) == DUMMY_FRAME
768 || get_frame_type (frame
) == SIGTRAMP_FRAME
769 || get_frame_type (frame
) == ARCH_FRAME
)
771 struct cleanup
*uiout_cleanup
772 = make_cleanup_ui_out_tuple_begin_end (uiout
, "frame");
774 annotate_frame_begin (print_level
? frame_relative_level (frame
) : 0,
775 gdbarch
, get_frame_pc (frame
));
777 /* Do this regardless of SOURCE because we don't have any source
778 to list for this frame. */
781 ui_out_text (uiout
, "#");
782 ui_out_field_fmt_int (uiout
, 2, ui_left
, "level",
783 frame_relative_level (frame
));
785 if (ui_out_is_mi_like_p (uiout
))
787 annotate_frame_address ();
788 ui_out_field_core_addr (uiout
, "addr",
789 gdbarch
, get_frame_pc (frame
));
790 annotate_frame_address_end ();
793 if (get_frame_type (frame
) == DUMMY_FRAME
)
795 annotate_function_call ();
796 ui_out_field_string (uiout
, "func", "<function called from gdb>");
798 else if (get_frame_type (frame
) == SIGTRAMP_FRAME
)
800 annotate_signal_handler_caller ();
801 ui_out_field_string (uiout
, "func", "<signal handler called>");
803 else if (get_frame_type (frame
) == ARCH_FRAME
)
805 ui_out_field_string (uiout
, "func", "<cross-architecture call>");
807 ui_out_text (uiout
, "\n");
808 annotate_frame_end ();
810 do_cleanups (uiout_cleanup
);
814 /* If FRAME is not the innermost frame, that normally means that
815 FRAME->pc points to *after* the call instruction, and we want to
816 get the line containing the call, never the next line. But if
817 the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the
818 next frame was not entered as the result of a call, and we want
819 to get the line containing FRAME->pc. */
820 find_frame_sal (frame
, &sal
);
822 location_print
= (print_what
== LOCATION
823 || print_what
== LOC_AND_ADDRESS
824 || print_what
== SRC_AND_LOC
);
826 if (location_print
|| !sal
.symtab
)
827 print_frame (frame
, print_level
, print_what
, print_args
, sal
);
829 source_print
= (print_what
== SRC_LINE
|| print_what
== SRC_AND_LOC
);
831 /* If disassemble-next-line is set to auto or on and doesn't have
832 the line debug messages for $pc, output the next instruction. */
833 if ((disassemble_next_line
== AUTO_BOOLEAN_AUTO
834 || disassemble_next_line
== AUTO_BOOLEAN_TRUE
)
835 && source_print
&& !sal
.symtab
)
836 do_gdb_disassembly (get_frame_arch (frame
), 1,
837 get_frame_pc (frame
), get_frame_pc (frame
) + 1);
839 if (source_print
&& sal
.symtab
)
842 int mid_statement
= ((print_what
== SRC_LINE
)
843 && frame_show_address (frame
, sal
));
845 if (annotation_level
)
846 done
= identify_source_line (sal
.symtab
, sal
.line
, mid_statement
,
847 get_frame_pc (frame
));
850 if (deprecated_print_frame_info_listing_hook
)
851 deprecated_print_frame_info_listing_hook (sal
.symtab
,
856 struct value_print_options opts
;
858 get_user_print_options (&opts
);
859 /* We used to do this earlier, but that is clearly
860 wrong. This function is used by many different
861 parts of gdb, including normal_stop in infrun.c,
862 which uses this to print out the current PC
863 when we stepi/nexti into the middle of a source
864 line. Only the command line really wants this
865 behavior. Other UIs probably would like the
866 ability to decide for themselves if it is desired. */
867 if (opts
.addressprint
&& mid_statement
)
869 ui_out_field_core_addr (uiout
, "addr",
870 gdbarch
, get_frame_pc (frame
));
871 ui_out_text (uiout
, "\t");
874 print_source_lines (sal
.symtab
, sal
.line
, sal
.line
+ 1, 0);
878 /* If disassemble-next-line is set to on and there is line debug
879 messages, output assembly codes for next line. */
880 if (disassemble_next_line
== AUTO_BOOLEAN_TRUE
)
881 do_gdb_disassembly (get_frame_arch (frame
), -1, sal
.pc
, sal
.end
);
884 if (print_what
!= LOCATION
)
888 if (get_frame_pc_if_available (frame
, &pc
))
889 set_last_displayed_sal (1, sal
.pspace
, pc
, sal
.symtab
, sal
.line
);
891 set_last_displayed_sal (0, 0, 0, 0, 0);
894 annotate_frame_end ();
896 gdb_flush (gdb_stdout
);
899 /* Remember the last symtab and line we displayed, which we use e.g.
900 * as the place to put a breakpoint when the `break' command is
901 * invoked with no arguments. */
904 set_last_displayed_sal (int valid
, struct program_space
*pspace
,
905 CORE_ADDR addr
, struct symtab
*symtab
,
908 last_displayed_sal_valid
= valid
;
909 last_displayed_pspace
= pspace
;
910 last_displayed_addr
= addr
;
911 last_displayed_symtab
= symtab
;
912 last_displayed_line
= line
;
913 if (valid
&& pspace
== NULL
)
915 clear_last_displayed_sal ();
916 internal_error (__FILE__
, __LINE__
,
917 _("Trying to set NULL pspace."));
921 /* Forget the last sal we displayed. */
924 clear_last_displayed_sal (void)
926 last_displayed_sal_valid
= 0;
927 last_displayed_pspace
= 0;
928 last_displayed_addr
= 0;
929 last_displayed_symtab
= 0;
930 last_displayed_line
= 0;
933 /* Is our record of the last sal we displayed valid? If not,
934 * the get_last_displayed_* functions will return NULL or 0, as
938 last_displayed_sal_is_valid (void)
940 return last_displayed_sal_valid
;
943 /* Get the pspace of the last sal we displayed, if it's valid. */
945 struct program_space
*
946 get_last_displayed_pspace (void)
948 if (last_displayed_sal_valid
)
949 return last_displayed_pspace
;
953 /* Get the address of the last sal we displayed, if it's valid. */
956 get_last_displayed_addr (void)
958 if (last_displayed_sal_valid
)
959 return last_displayed_addr
;
963 /* Get the symtab of the last sal we displayed, if it's valid. */
966 get_last_displayed_symtab (void)
968 if (last_displayed_sal_valid
)
969 return last_displayed_symtab
;
973 /* Get the line of the last sal we displayed, if it's valid. */
976 get_last_displayed_line (void)
978 if (last_displayed_sal_valid
)
979 return last_displayed_line
;
983 /* Get the last sal we displayed, if it's valid. */
986 get_last_displayed_sal (struct symtab_and_line
*sal
)
988 if (last_displayed_sal_valid
)
990 sal
->pspace
= last_displayed_pspace
;
991 sal
->pc
= last_displayed_addr
;
992 sal
->symtab
= last_displayed_symtab
;
993 sal
->line
= last_displayed_line
;
1005 /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function
1006 corresponding to FRAME. */
1009 find_frame_funname (struct frame_info
*frame
, const char **funname
,
1010 enum language
*funlang
, struct symbol
**funcp
)
1012 struct symbol
*func
;
1015 *funlang
= language_unknown
;
1019 func
= get_frame_function (frame
);
1022 /* In certain pathological cases, the symtabs give the wrong
1023 function (when we are in the first function in a file which
1024 is compiled without debugging symbols, the previous function
1025 is compiled with debugging symbols, and the "foo.o" symbol
1026 that is supposed to tell us where the file with debugging
1027 symbols ends has been truncated by ar because it is longer
1028 than 15 characters). This also occurs if the user uses asm()
1029 to create a function but not stabs for it (in a file compiled
1032 So look in the minimal symbol tables as well, and if it comes
1033 up with a larger address for the function use that instead.
1034 I don't think this can ever cause any problems; there
1035 shouldn't be any minimal symbols in the middle of a function;
1036 if this is ever changed many parts of GDB will need to be
1037 changed (and we'll create a find_pc_minimal_function or some
1040 struct minimal_symbol
*msymbol
= NULL
;
1042 /* Don't attempt to do this for inlined functions, which do not
1043 have a corresponding minimal symbol. */
1044 if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func
)))
1046 = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame
));
1049 && (SYMBOL_VALUE_ADDRESS (msymbol
)
1050 > BLOCK_START (SYMBOL_BLOCK_VALUE (func
))))
1052 /* We also don't know anything about the function besides
1053 its address and name. */
1055 *funname
= SYMBOL_PRINT_NAME (msymbol
);
1056 *funlang
= SYMBOL_LANGUAGE (msymbol
);
1060 *funname
= SYMBOL_PRINT_NAME (func
);
1061 *funlang
= SYMBOL_LANGUAGE (func
);
1064 if (*funlang
== language_cplus
)
1066 /* It seems appropriate to use SYMBOL_PRINT_NAME() here,
1067 to display the demangled name that we already have
1068 stored in the symbol table, but we stored a version
1069 with DMGL_PARAMS turned on, and here we don't want to
1070 display parameters. So remove the parameters. */
1071 char *func_only
= cp_remove_params (*funname
);
1075 *funname
= func_only
;
1076 make_cleanup (xfree
, func_only
);
1083 struct minimal_symbol
*msymbol
;
1086 if (!get_frame_address_in_block_if_available (frame
, &pc
))
1089 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1090 if (msymbol
!= NULL
)
1092 *funname
= SYMBOL_PRINT_NAME (msymbol
);
1093 *funlang
= SYMBOL_LANGUAGE (msymbol
);
1099 print_frame (struct frame_info
*frame
, int print_level
,
1100 enum print_what print_what
, int print_args
,
1101 struct symtab_and_line sal
)
1103 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1104 struct ui_out
*uiout
= current_uiout
;
1105 const char *funname
= NULL
;
1106 enum language funlang
= language_unknown
;
1107 struct ui_file
*stb
;
1108 struct cleanup
*old_chain
, *list_chain
;
1109 struct value_print_options opts
;
1110 struct symbol
*func
;
1114 pc_p
= get_frame_pc_if_available (frame
, &pc
);
1116 stb
= mem_fileopen ();
1117 old_chain
= make_cleanup_ui_file_delete (stb
);
1119 find_frame_funname (frame
, &funname
, &funlang
, &func
);
1121 annotate_frame_begin (print_level
? frame_relative_level (frame
) : 0,
1124 list_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "frame");
1128 ui_out_text (uiout
, "#");
1129 ui_out_field_fmt_int (uiout
, 2, ui_left
, "level",
1130 frame_relative_level (frame
));
1132 get_user_print_options (&opts
);
1133 if (opts
.addressprint
)
1135 || frame_show_address (frame
, sal
)
1136 || print_what
== LOC_AND_ADDRESS
)
1138 annotate_frame_address ();
1140 ui_out_field_core_addr (uiout
, "addr", gdbarch
, pc
);
1142 ui_out_field_string (uiout
, "addr", "<unavailable>");
1143 annotate_frame_address_end ();
1144 ui_out_text (uiout
, " in ");
1146 annotate_frame_function_name ();
1147 fprintf_symbol_filtered (stb
, funname
? funname
: "??",
1148 funlang
, DMGL_ANSI
);
1149 ui_out_field_stream (uiout
, "func", stb
);
1150 ui_out_wrap_hint (uiout
, " ");
1151 annotate_frame_args ();
1153 ui_out_text (uiout
, " (");
1156 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1158 struct cleanup
*args_list_chain
;
1159 volatile struct gdb_exception e
;
1161 if (gdbarch_frame_num_args_p (gdbarch
))
1163 numargs
= gdbarch_frame_num_args (gdbarch
, frame
);
1164 gdb_assert (numargs
>= 0);
1169 args_list_chain
= make_cleanup_ui_out_list_begin_end (uiout
, "args");
1170 TRY_CATCH (e
, RETURN_MASK_ERROR
)
1172 print_frame_args (func
, frame
, numargs
, gdb_stdout
);
1174 /* FIXME: ARGS must be a list. If one argument is a string it
1175 will have " that will not be properly escaped. */
1176 /* Invoke ui_out_tuple_end. */
1177 do_cleanups (args_list_chain
);
1180 ui_out_text (uiout
, ")");
1183 const char *filename_display
;
1185 filename_display
= symtab_to_filename_for_display (sal
.symtab
);
1186 annotate_frame_source_begin ();
1187 ui_out_wrap_hint (uiout
, " ");
1188 ui_out_text (uiout
, " at ");
1189 annotate_frame_source_file ();
1190 ui_out_field_string (uiout
, "file", filename_display
);
1191 if (ui_out_is_mi_like_p (uiout
))
1193 const char *fullname
= symtab_to_fullname (sal
.symtab
);
1195 ui_out_field_string (uiout
, "fullname", fullname
);
1197 annotate_frame_source_file_end ();
1198 ui_out_text (uiout
, ":");
1199 annotate_frame_source_line ();
1200 ui_out_field_int (uiout
, "line", sal
.line
);
1201 annotate_frame_source_end ();
1204 if (pc_p
&& (funname
== NULL
|| sal
.symtab
== NULL
))
1207 char *lib
= PC_SOLIB (get_frame_pc (frame
));
1209 char *lib
= solib_name_from_address (get_frame_program_space (frame
),
1210 get_frame_pc (frame
));
1214 annotate_frame_where ();
1215 ui_out_wrap_hint (uiout
, " ");
1216 ui_out_text (uiout
, " from ");
1217 ui_out_field_string (uiout
, "from", lib
);
1221 /* do_cleanups will call ui_out_tuple_end() for us. */
1222 do_cleanups (list_chain
);
1223 ui_out_text (uiout
, "\n");
1224 do_cleanups (old_chain
);
1228 /* Read a frame specification in whatever the appropriate format is
1229 from FRAME_EXP. Call error(), printing MESSAGE, if the
1230 specification is in any way invalid (so this function never returns
1231 NULL). When SEPECTED_P is non-NULL set its target to indicate that
1232 the default selected frame was used. */
1234 static struct frame_info
*
1235 parse_frame_specification_1 (const char *frame_exp
, const char *message
,
1236 int *selected_frame_p
)
1239 struct value
*args
[4];
1240 CORE_ADDR addrs
[ARRAY_SIZE (args
)];
1242 if (frame_exp
== NULL
)
1250 struct cleanup
*cleanup
;
1253 /* Skip leading white space, bail of EOL. */
1254 frame_exp
= skip_spaces_const (frame_exp
);
1258 /* Parse the argument, extract it, save it. */
1260 *p
&& !isspace (*p
);
1262 addr_string
= savestring (frame_exp
, p
- frame_exp
);
1264 cleanup
= make_cleanup (xfree
, addr_string
);
1266 /* NOTE: Parse and evaluate expression, but do not use
1267 functions such as parse_and_eval_long or
1268 parse_and_eval_address to also extract the value.
1269 Instead value_as_long and value_as_address are used.
1270 This avoids problems with expressions that contain
1272 if (numargs
>= ARRAY_SIZE (args
))
1273 error (_("Too many args in frame specification"));
1274 args
[numargs
++] = parse_and_eval (addr_string
);
1276 do_cleanups (cleanup
);
1280 /* If no args, default to the selected frame. */
1283 if (selected_frame_p
!= NULL
)
1284 (*selected_frame_p
) = 1;
1285 return get_selected_frame (message
);
1288 /* None of the remaining use the selected frame. */
1289 if (selected_frame_p
!= NULL
)
1290 (*selected_frame_p
) = 0;
1292 /* Assume the single arg[0] is an integer, and try using that to
1293 select a frame relative to current. */
1296 struct frame_info
*fid
;
1297 int level
= value_as_long (args
[0]);
1299 fid
= find_relative_frame (get_current_frame (), &level
);
1301 /* find_relative_frame was successful. */
1305 /* Convert each value into a corresponding address. */
1309 for (i
= 0; i
< numargs
; i
++)
1310 addrs
[i
] = value_as_address (args
[i
]);
1313 /* Assume that the single arg[0] is an address, use that to identify
1314 a frame with a matching ID. Should this also accept stack/pc or
1315 stack/pc/special. */
1318 struct frame_id id
= frame_id_build_wild (addrs
[0]);
1319 struct frame_info
*fid
;
1321 /* If (s)he specifies the frame with an address, he deserves
1322 what (s)he gets. Still, give the highest one that matches.
1323 (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't
1325 for (fid
= get_current_frame ();
1327 fid
= get_prev_frame (fid
))
1329 if (frame_id_eq (id
, get_frame_id (fid
)))
1331 struct frame_info
*prev_frame
;
1335 prev_frame
= get_prev_frame (fid
);
1337 || !frame_id_eq (id
, get_frame_id (prev_frame
)))
1346 /* We couldn't identify the frame as an existing frame, but
1347 perhaps we can create one with a single argument. */
1349 return create_new_frame (addrs
[0], 0);
1350 else if (numargs
== 2)
1351 return create_new_frame (addrs
[0], addrs
[1]);
1353 error (_("Too many args in frame specification"));
1356 static struct frame_info
*
1357 parse_frame_specification (char *frame_exp
)
1359 return parse_frame_specification_1 (frame_exp
, NULL
, NULL
);
1362 /* Print verbosely the selected frame or the frame at address
1363 ADDR_EXP. Absolutely all information in the frame is printed. */
1366 frame_info (char *addr_exp
, int from_tty
)
1368 struct frame_info
*fi
;
1369 struct symtab_and_line sal
;
1370 struct symbol
*func
;
1372 struct frame_info
*calling_frame_info
;
1374 const char *funname
= 0;
1375 enum language funlang
= language_unknown
;
1376 const char *pc_regname
;
1377 int selected_frame_p
;
1378 struct gdbarch
*gdbarch
;
1379 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
1382 CORE_ADDR caller_pc
;
1384 fi
= parse_frame_specification_1 (addr_exp
, "No stack.", &selected_frame_p
);
1385 gdbarch
= get_frame_arch (fi
);
1387 /* Name of the value returned by get_frame_pc(). Per comments, "pc"
1388 is not a good name. */
1389 if (gdbarch_pc_regnum (gdbarch
) >= 0)
1390 /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can
1391 easily not match that of the internal value returned by
1393 pc_regname
= gdbarch_register_name (gdbarch
, gdbarch_pc_regnum (gdbarch
));
1395 /* But then, this is weird to. Even without gdbarch_pc_regnum, an
1396 architectures will often have a hardware register called "pc",
1397 and that register's value, again, can easily not match
1401 frame_pc_p
= get_frame_pc_if_available (fi
, &frame_pc
);
1402 find_frame_sal (fi
, &sal
);
1403 func
= get_frame_function (fi
);
1407 funname
= SYMBOL_PRINT_NAME (func
);
1408 funlang
= SYMBOL_LANGUAGE (func
);
1409 if (funlang
== language_cplus
)
1411 /* It seems appropriate to use SYMBOL_PRINT_NAME() here,
1412 to display the demangled name that we already have
1413 stored in the symbol table, but we stored a version
1414 with DMGL_PARAMS turned on, and here we don't want to
1415 display parameters. So remove the parameters. */
1416 char *func_only
= cp_remove_params (funname
);
1420 funname
= func_only
;
1421 make_cleanup (xfree
, func_only
);
1425 else if (frame_pc_p
)
1427 struct minimal_symbol
*msymbol
;
1429 msymbol
= lookup_minimal_symbol_by_pc (frame_pc
);
1430 if (msymbol
!= NULL
)
1432 funname
= SYMBOL_PRINT_NAME (msymbol
);
1433 funlang
= SYMBOL_LANGUAGE (msymbol
);
1436 calling_frame_info
= get_prev_frame (fi
);
1438 if (selected_frame_p
&& frame_relative_level (fi
) >= 0)
1440 printf_filtered (_("Stack level %d, frame at "),
1441 frame_relative_level (fi
));
1445 printf_filtered (_("Stack frame at "));
1447 fputs_filtered (paddress (gdbarch
, get_frame_base (fi
)), gdb_stdout
);
1448 printf_filtered (":\n");
1449 printf_filtered (" %s = ", pc_regname
);
1451 fputs_filtered (paddress (gdbarch
, get_frame_pc (fi
)), gdb_stdout
);
1453 fputs_filtered ("<unavailable>", gdb_stdout
);
1458 printf_filtered (" in ");
1459 fprintf_symbol_filtered (gdb_stdout
, funname
, funlang
,
1460 DMGL_ANSI
| DMGL_PARAMS
);
1464 printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal
.symtab
),
1466 puts_filtered ("; ");
1468 printf_filtered ("saved %s ", pc_regname
);
1469 if (frame_unwind_caller_pc_if_available (fi
, &caller_pc
))
1470 fputs_filtered (paddress (gdbarch
, caller_pc
), gdb_stdout
);
1472 fputs_filtered ("<unavailable>", gdb_stdout
);
1473 printf_filtered ("\n");
1475 if (calling_frame_info
== NULL
)
1477 enum unwind_stop_reason reason
;
1479 reason
= get_frame_unwind_stop_reason (fi
);
1480 if (reason
!= UNWIND_NO_REASON
)
1481 printf_filtered (_(" Outermost frame: %s\n"),
1482 frame_stop_reason_string (reason
));
1484 else if (get_frame_type (fi
) == TAILCALL_FRAME
)
1485 puts_filtered (" tail call frame");
1486 else if (get_frame_type (fi
) == INLINE_FRAME
)
1487 printf_filtered (" inlined into frame %d",
1488 frame_relative_level (get_prev_frame (fi
)));
1491 printf_filtered (" called by frame at ");
1492 fputs_filtered (paddress (gdbarch
, get_frame_base (calling_frame_info
)),
1495 if (get_next_frame (fi
) && calling_frame_info
)
1496 puts_filtered (",");
1498 if (get_next_frame (fi
))
1500 printf_filtered (" caller of frame at ");
1501 fputs_filtered (paddress (gdbarch
, get_frame_base (get_next_frame (fi
))),
1504 if (get_next_frame (fi
) || calling_frame_info
)
1505 puts_filtered ("\n");
1508 printf_filtered (" source language %s.\n",
1509 language_str (s
->language
));
1512 /* Address of the argument list for this frame, or 0. */
1513 CORE_ADDR arg_list
= get_frame_args_address (fi
);
1514 /* Number of args for this frame, or -1 if unknown. */
1518 printf_filtered (" Arglist at unknown address.\n");
1521 printf_filtered (" Arglist at ");
1522 fputs_filtered (paddress (gdbarch
, arg_list
), gdb_stdout
);
1523 printf_filtered (",");
1525 if (!gdbarch_frame_num_args_p (gdbarch
))
1528 puts_filtered (" args: ");
1532 numargs
= gdbarch_frame_num_args (gdbarch
, fi
);
1533 gdb_assert (numargs
>= 0);
1535 puts_filtered (" no args.");
1536 else if (numargs
== 1)
1537 puts_filtered (" 1 arg: ");
1539 printf_filtered (" %d args: ", numargs
);
1541 print_frame_args (func
, fi
, numargs
, gdb_stdout
);
1542 puts_filtered ("\n");
1546 /* Address of the local variables for this frame, or 0. */
1547 CORE_ADDR arg_list
= get_frame_locals_address (fi
);
1550 printf_filtered (" Locals at unknown address,");
1553 printf_filtered (" Locals at ");
1554 fputs_filtered (paddress (gdbarch
, arg_list
), gdb_stdout
);
1555 printf_filtered (",");
1559 /* Print as much information as possible on the location of all the
1562 enum lval_type lval
;
1571 /* The sp is special; what's displayed isn't the save address, but
1572 the value of the previous frame's sp. This is a legacy thing,
1573 at one stage the frame cached the previous frame's SP instead
1574 of its address, hence it was easiest to just display the cached
1576 if (gdbarch_sp_regnum (gdbarch
) >= 0)
1578 /* Find out the location of the saved stack pointer with out
1579 actually evaluating it. */
1580 frame_register_unwind (fi
, gdbarch_sp_regnum (gdbarch
),
1581 &optimized
, &unavailable
, &lval
, &addr
,
1583 if (!optimized
&& !unavailable
&& lval
== not_lval
)
1585 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
1586 int sp_size
= register_size (gdbarch
, gdbarch_sp_regnum (gdbarch
));
1587 gdb_byte value
[MAX_REGISTER_SIZE
];
1590 frame_register_unwind (fi
, gdbarch_sp_regnum (gdbarch
),
1591 &optimized
, &unavailable
, &lval
, &addr
,
1593 /* NOTE: cagney/2003-05-22: This is assuming that the
1594 stack pointer was packed as an unsigned integer. That
1595 may or may not be valid. */
1596 sp
= extract_unsigned_integer (value
, sp_size
, byte_order
);
1597 printf_filtered (" Previous frame's sp is ");
1598 fputs_filtered (paddress (gdbarch
, sp
), gdb_stdout
);
1599 printf_filtered ("\n");
1602 else if (!optimized
&& !unavailable
&& lval
== lval_memory
)
1604 printf_filtered (" Previous frame's sp at ");
1605 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1606 printf_filtered ("\n");
1609 else if (!optimized
&& !unavailable
&& lval
== lval_register
)
1611 printf_filtered (" Previous frame's sp in %s\n",
1612 gdbarch_register_name (gdbarch
, realnum
));
1615 /* else keep quiet. */
1619 numregs
= gdbarch_num_regs (gdbarch
)
1620 + gdbarch_num_pseudo_regs (gdbarch
);
1621 for (i
= 0; i
< numregs
; i
++)
1622 if (i
!= gdbarch_sp_regnum (gdbarch
)
1623 && gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1625 /* Find out the location of the saved register without
1626 fetching the corresponding value. */
1627 frame_register_unwind (fi
, i
, &optimized
, &unavailable
,
1628 &lval
, &addr
, &realnum
, NULL
);
1629 /* For moment, only display registers that were saved on the
1631 if (!optimized
&& !unavailable
&& lval
== lval_memory
)
1634 puts_filtered (" Saved registers:\n ");
1636 puts_filtered (",");
1638 printf_filtered (" %s at ",
1639 gdbarch_register_name (gdbarch
, i
));
1640 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1644 if (count
|| need_nl
)
1645 puts_filtered ("\n");
1648 do_cleanups (back_to
);
1651 /* Print briefly all stack frames or just the innermost COUNT_EXP
1655 backtrace_command_1 (char *count_exp
, int show_locals
, int from_tty
)
1657 struct frame_info
*fi
;
1660 struct frame_info
*trailing
;
1663 if (!target_has_stack
)
1664 error (_("No stack."));
1666 /* The following code must do two things. First, it must set the
1667 variable TRAILING to the frame from which we should start
1668 printing. Second, it must set the variable count to the number
1669 of frames which we should print, or -1 if all of them. */
1670 trailing
= get_current_frame ();
1675 count
= parse_and_eval_long (count_exp
);
1678 struct frame_info
*current
;
1683 while (current
&& count
--)
1686 current
= get_prev_frame (current
);
1689 /* Will stop when CURRENT reaches the top of the stack.
1690 TRAILING will be COUNT below it. */
1694 trailing
= get_prev_frame (trailing
);
1695 current
= get_prev_frame (current
);
1707 /* Read in symbols for all of the frames. Need to do this in a
1708 separate pass so that "Reading in symbols for xxx" messages
1709 don't screw up the appearance of the backtrace. Also if
1710 people have strong opinions against reading symbols for
1711 backtrace this may have to be an option. */
1713 for (fi
= trailing
; fi
!= NULL
&& i
--; fi
= get_prev_frame (fi
))
1718 pc
= get_frame_address_in_block (fi
);
1719 find_pc_sect_symtab_via_partial (pc
, find_pc_mapped_section (pc
));
1723 for (i
= 0, fi
= trailing
; fi
&& count
--; i
++, fi
= get_prev_frame (fi
))
1727 /* Don't use print_stack_frame; if an error() occurs it probably
1728 means further attempts to backtrace would fail (on the other
1729 hand, perhaps the code does or could be fixed to make sure
1730 the frame->prev field gets set to NULL in that case). */
1731 print_frame_info (fi
, 1, LOCATION
, 1);
1734 struct frame_id frame_id
= get_frame_id (fi
);
1736 print_frame_local_vars (fi
, 1, gdb_stdout
);
1738 /* print_frame_local_vars invalidates FI. */
1739 fi
= frame_find_by_id (frame_id
);
1743 warning (_("Unable to restore previously selected frame."));
1748 /* Save the last frame to check for error conditions. */
1752 /* If we've stopped before the end, mention that. */
1754 printf_filtered (_("(More stack frames follow...)\n"));
1756 /* If we've run out of frames, and the reason appears to be an error
1757 condition, print it. */
1758 if (fi
== NULL
&& trailing
!= NULL
)
1760 enum unwind_stop_reason reason
;
1762 reason
= get_frame_unwind_stop_reason (trailing
);
1763 if (reason
>= UNWIND_FIRST_ERROR
)
1764 printf_filtered (_("Backtrace stopped: %s\n"),
1765 frame_stop_reason_string (reason
));
1770 backtrace_command (char *arg
, int from_tty
)
1772 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
1773 int fulltrace_arg
= -1, arglen
= 0, argc
= 0;
1780 argv
= gdb_buildargv (arg
);
1781 make_cleanup_freeargv (argv
);
1783 for (i
= 0; argv
[i
]; i
++)
1787 for (j
= 0; j
< strlen (argv
[i
]); j
++)
1788 argv
[i
][j
] = tolower (argv
[i
][j
]);
1790 if (fulltrace_arg
< 0 && subset_compare (argv
[i
], "full"))
1791 fulltrace_arg
= argc
;
1794 arglen
+= strlen (argv
[i
]);
1799 if (fulltrace_arg
>= 0)
1803 arg
= xmalloc (arglen
+ 1);
1804 make_cleanup (xfree
, arg
);
1806 for (i
= 0; i
< (argc
+ 1); i
++)
1808 if (i
!= fulltrace_arg
)
1810 strcat (arg
, argv
[i
]);
1820 backtrace_command_1 (arg
, fulltrace_arg
>= 0 /* show_locals */, from_tty
);
1822 do_cleanups (old_chain
);
1826 backtrace_full_command (char *arg
, int from_tty
)
1828 backtrace_command_1 (arg
, 1 /* show_locals */, from_tty
);
1832 /* Iterate over the local variables of a block B, calling CB with
1836 iterate_over_block_locals (struct block
*b
,
1837 iterate_over_block_arg_local_vars_cb cb
,
1840 struct block_iterator iter
;
1843 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1845 switch (SYMBOL_CLASS (sym
))
1851 if (SYMBOL_IS_ARGUMENT (sym
))
1853 if (SYMBOL_DOMAIN (sym
) == COMMON_BLOCK_DOMAIN
)
1855 (*cb
) (SYMBOL_PRINT_NAME (sym
), sym
, cb_data
);
1859 /* Ignore symbols which are not locals. */
1866 /* Same, but print labels. */
1869 /* Commented out, as the code using this function has also been
1870 commented out. FIXME:brobecker/2009-01-13: Find out why the code
1871 was commented out in the first place. The discussion introducing
1872 this change (2007-12-04: Support lexical blocks and function bodies
1873 that occupy non-contiguous address ranges) did not explain why
1874 this change was made. */
1876 print_block_frame_labels (struct gdbarch
*gdbarch
, struct block
*b
,
1877 int *have_default
, struct ui_file
*stream
)
1879 struct block_iterator iter
;
1881 int values_printed
= 0;
1883 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1885 if (strcmp (SYMBOL_LINKAGE_NAME (sym
), "default") == 0)
1891 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
1893 struct symtab_and_line sal
;
1894 struct value_print_options opts
;
1896 sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
), 0);
1898 fputs_filtered (SYMBOL_PRINT_NAME (sym
), stream
);
1899 get_user_print_options (&opts
);
1900 if (opts
.addressprint
)
1902 fprintf_filtered (stream
, " ");
1903 fputs_filtered (paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (sym
)),
1906 fprintf_filtered (stream
, " in file %s, line %d\n",
1907 sal
.symtab
->filename
, sal
.line
);
1911 return values_printed
;
1915 /* Iterate over all the local variables in block B, including all its
1916 superblocks, stopping when the top-level block is reached. */
1919 iterate_over_block_local_vars (struct block
*block
,
1920 iterate_over_block_arg_local_vars_cb cb
,
1925 iterate_over_block_locals (block
, cb
, cb_data
);
1926 /* After handling the function's top-level block, stop. Don't
1927 continue to its superblock, the block of per-file
1929 if (BLOCK_FUNCTION (block
))
1931 block
= BLOCK_SUPERBLOCK (block
);
1935 /* Data to be passed around in the calls to the locals and args
1938 struct print_variable_and_value_data
1940 struct frame_id frame_id
;
1942 struct ui_file
*stream
;
1946 /* The callback for the locals and args iterators. */
1949 do_print_variable_and_value (const char *print_name
,
1953 struct print_variable_and_value_data
*p
= cb_data
;
1954 struct frame_info
*frame
;
1956 frame
= frame_find_by_id (p
->frame_id
);
1959 warning (_("Unable to restore previously selected frame."));
1963 print_variable_and_value (print_name
, sym
, frame
, p
->stream
, p
->num_tabs
);
1965 /* print_variable_and_value invalidates FRAME. */
1968 p
->values_printed
= 1;
1971 /* Print all variables from the innermost up to the function block of FRAME.
1972 Print them with values to STREAM indented by NUM_TABS.
1974 This function will invalidate FRAME. */
1977 print_frame_local_vars (struct frame_info
*frame
, int num_tabs
,
1978 struct ui_file
*stream
)
1980 struct print_variable_and_value_data cb_data
;
1981 struct block
*block
;
1984 if (!get_frame_pc_if_available (frame
, &pc
))
1986 fprintf_filtered (stream
,
1987 _("PC unavailable, cannot determine locals.\n"));
1991 block
= get_frame_block (frame
, 0);
1994 fprintf_filtered (stream
, "No symbol table info available.\n");
1998 cb_data
.frame_id
= get_frame_id (frame
);
1999 cb_data
.num_tabs
= 4 * num_tabs
;
2000 cb_data
.stream
= stream
;
2001 cb_data
.values_printed
= 0;
2003 iterate_over_block_local_vars (block
,
2004 do_print_variable_and_value
,
2007 /* do_print_variable_and_value invalidates FRAME. */
2010 if (!cb_data
.values_printed
)
2011 fprintf_filtered (stream
, _("No locals.\n"));
2015 locals_info (char *args
, int from_tty
)
2017 print_frame_local_vars (get_selected_frame (_("No frame selected.")),
2021 /* Iterate over all the argument variables in block B.
2023 Returns 1 if any argument was walked; 0 otherwise. */
2026 iterate_over_block_arg_vars (struct block
*b
,
2027 iterate_over_block_arg_local_vars_cb cb
,
2030 struct block_iterator iter
;
2031 struct symbol
*sym
, *sym2
;
2033 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2035 /* Don't worry about things which aren't arguments. */
2036 if (SYMBOL_IS_ARGUMENT (sym
))
2038 /* We have to look up the symbol because arguments can have
2039 two entries (one a parameter, one a local) and the one we
2040 want is the local, which lookup_symbol will find for us.
2041 This includes gcc1 (not gcc2) on the sparc when passing a
2042 small structure and gcc2 when the argument type is float
2043 and it is passed as a double and converted to float by
2044 the prologue (in the latter case the type of the LOC_ARG
2045 symbol is double and the type of the LOC_LOCAL symbol is
2046 float). There are also LOC_ARG/LOC_REGISTER pairs which
2047 are not combined in symbol-reading. */
2049 sym2
= lookup_symbol (SYMBOL_LINKAGE_NAME (sym
),
2050 b
, VAR_DOMAIN
, NULL
);
2051 (*cb
) (SYMBOL_PRINT_NAME (sym
), sym2
, cb_data
);
2056 /* Print all argument variables of the function of FRAME.
2057 Print them with values to STREAM.
2059 This function will invalidate FRAME. */
2062 print_frame_arg_vars (struct frame_info
*frame
, struct ui_file
*stream
)
2064 struct print_variable_and_value_data cb_data
;
2065 struct symbol
*func
;
2068 if (!get_frame_pc_if_available (frame
, &pc
))
2070 fprintf_filtered (stream
, _("PC unavailable, cannot determine args.\n"));
2074 func
= get_frame_function (frame
);
2077 fprintf_filtered (stream
, _("No symbol table info available.\n"));
2081 cb_data
.frame_id
= get_frame_id (frame
);
2082 cb_data
.num_tabs
= 0;
2083 cb_data
.stream
= gdb_stdout
;
2084 cb_data
.values_printed
= 0;
2086 iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func
),
2087 do_print_variable_and_value
, &cb_data
);
2089 /* do_print_variable_and_value invalidates FRAME. */
2092 if (!cb_data
.values_printed
)
2093 fprintf_filtered (stream
, _("No arguments.\n"));
2097 args_info (char *ignore
, int from_tty
)
2099 print_frame_arg_vars (get_selected_frame (_("No frame selected.")),
2105 args_plus_locals_info (char *ignore
, int from_tty
)
2107 args_info (ignore
, from_tty
);
2108 locals_info (ignore
, from_tty
);
2112 /* Select frame FRAME. Also print the stack frame and show the source
2113 if this is the tui version. */
2115 select_and_print_frame (struct frame_info
*frame
)
2117 select_frame (frame
);
2119 print_stack_frame (frame
, 1, SRC_AND_LOC
);
2122 /* Return the symbol-block in which the selected frame is executing.
2123 Can return zero under various legitimate circumstances.
2125 If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant
2126 code address within the block returned. We use this to decide
2127 which macros are in scope. */
2130 get_selected_block (CORE_ADDR
*addr_in_block
)
2132 if (!has_stack_frames ())
2135 return get_frame_block (get_selected_frame (NULL
), addr_in_block
);
2138 /* Find a frame a certain number of levels away from FRAME.
2139 LEVEL_OFFSET_PTR points to an int containing the number of levels.
2140 Positive means go to earlier frames (up); negative, the reverse.
2141 The int that contains the number of levels is counted toward
2142 zero as the frames for those levels are found.
2143 If the top or bottom frame is reached, that frame is returned,
2144 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
2145 how much farther the original request asked to go. */
2148 find_relative_frame (struct frame_info
*frame
, int *level_offset_ptr
)
2150 /* Going up is simple: just call get_prev_frame enough times or
2151 until the initial frame is reached. */
2152 while (*level_offset_ptr
> 0)
2154 struct frame_info
*prev
= get_prev_frame (frame
);
2158 (*level_offset_ptr
)--;
2162 /* Going down is just as simple. */
2163 while (*level_offset_ptr
< 0)
2165 struct frame_info
*next
= get_next_frame (frame
);
2169 (*level_offset_ptr
)++;
2176 /* The "select_frame" command. With no argument this is a NOP.
2177 Select the frame at level LEVEL_EXP if it is a valid level.
2178 Otherwise, treat LEVEL_EXP as an address expression and select it.
2180 See parse_frame_specification for more info on proper frame
2184 select_frame_command (char *level_exp
, int from_tty
)
2186 select_frame (parse_frame_specification_1 (level_exp
, "No stack.", NULL
));
2189 /* The "frame" command. With no argument, print the selected frame
2190 briefly. With an argument, behave like select_frame and then print
2191 the selected frame. */
2194 frame_command (char *level_exp
, int from_tty
)
2196 select_frame_command (level_exp
, from_tty
);
2197 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2200 /* The XDB Compatibility command to print the current frame. */
2203 current_frame_command (char *level_exp
, int from_tty
)
2205 print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC
);
2208 /* Select the frame up one or COUNT_EXP stack levels from the
2209 previously selected frame, and print it briefly. */
2212 up_silently_base (char *count_exp
)
2214 struct frame_info
*frame
;
2218 count
= parse_and_eval_long (count_exp
);
2220 frame
= find_relative_frame (get_selected_frame ("No stack."), &count
);
2221 if (count
!= 0 && count_exp
== NULL
)
2222 error (_("Initial frame selected; you cannot go up."));
2223 select_frame (frame
);
2227 up_silently_command (char *count_exp
, int from_tty
)
2229 up_silently_base (count_exp
);
2233 up_command (char *count_exp
, int from_tty
)
2235 up_silently_base (count_exp
);
2236 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2239 /* Select the frame down one or COUNT_EXP stack levels from the previously
2240 selected frame, and print it briefly. */
2243 down_silently_base (char *count_exp
)
2245 struct frame_info
*frame
;
2249 count
= -parse_and_eval_long (count_exp
);
2251 frame
= find_relative_frame (get_selected_frame ("No stack."), &count
);
2252 if (count
!= 0 && count_exp
== NULL
)
2254 /* We only do this if COUNT_EXP is not specified. That way
2255 "down" means to really go down (and let me know if that is
2256 impossible), but "down 9999" can be used to mean go all the
2257 way down without getting an error. */
2259 error (_("Bottom (innermost) frame selected; you cannot go down."));
2262 select_frame (frame
);
2266 down_silently_command (char *count_exp
, int from_tty
)
2268 down_silently_base (count_exp
);
2272 down_command (char *count_exp
, int from_tty
)
2274 down_silently_base (count_exp
);
2275 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2280 return_command (char *retval_exp
, int from_tty
)
2282 /* Initialize it just to avoid a GCC false warning. */
2283 enum return_value_convention rv_conv
= RETURN_VALUE_STRUCT_CONVENTION
;
2284 struct frame_info
*thisframe
;
2285 struct gdbarch
*gdbarch
;
2286 struct symbol
*thisfun
;
2287 struct value
*return_value
= NULL
;
2288 struct value
*function
= NULL
;
2289 const char *query_prefix
= "";
2291 thisframe
= get_selected_frame ("No selected frame.");
2292 thisfun
= get_frame_function (thisframe
);
2293 gdbarch
= get_frame_arch (thisframe
);
2295 if (get_frame_type (get_current_frame ()) == INLINE_FRAME
)
2296 error (_("Can not force return from an inlined function."));
2298 /* Compute the return value. If the computation triggers an error,
2299 let it bail. If the return type can't be handled, set
2300 RETURN_VALUE to NULL, and QUERY_PREFIX to an informational
2304 struct expression
*retval_expr
= parse_expression (retval_exp
);
2305 struct cleanup
*old_chain
= make_cleanup (xfree
, retval_expr
);
2306 struct type
*return_type
= NULL
;
2308 /* Compute the return value. Should the computation fail, this
2309 call throws an error. */
2310 return_value
= evaluate_expression (retval_expr
);
2312 /* Cast return value to the return type of the function. Should
2313 the cast fail, this call throws an error. */
2314 if (thisfun
!= NULL
)
2315 return_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun
));
2316 if (return_type
== NULL
)
2318 if (retval_expr
->elts
[0].opcode
!= UNOP_CAST
2319 && retval_expr
->elts
[0].opcode
!= UNOP_CAST_TYPE
)
2320 error (_("Return value type not available for selected "
2322 "Please use an explicit cast of the value to return."));
2323 return_type
= value_type (return_value
);
2325 do_cleanups (old_chain
);
2326 CHECK_TYPEDEF (return_type
);
2327 return_value
= value_cast (return_type
, return_value
);
2329 /* Make sure the value is fully evaluated. It may live in the
2330 stack frame we're about to pop. */
2331 if (value_lazy (return_value
))
2332 value_fetch_lazy (return_value
);
2334 if (thisfun
!= NULL
)
2335 function
= read_var_value (thisfun
, thisframe
);
2337 rv_conv
= RETURN_VALUE_REGISTER_CONVENTION
;
2338 if (TYPE_CODE (return_type
) == TYPE_CODE_VOID
)
2339 /* If the return-type is "void", don't try to find the
2340 return-value's location. However, do still evaluate the
2341 return expression so that, even when the expression result
2342 is discarded, side effects such as "return i++" still
2344 return_value
= NULL
;
2345 else if (thisfun
!= NULL
)
2347 rv_conv
= struct_return_convention (gdbarch
, function
, return_type
);
2348 if (rv_conv
== RETURN_VALUE_STRUCT_CONVENTION
2349 || rv_conv
== RETURN_VALUE_ABI_RETURNS_ADDRESS
)
2351 query_prefix
= "The location at which to store the "
2352 "function's return value is unknown.\n"
2353 "If you continue, the return value "
2354 "that you specified will be ignored.\n";
2355 return_value
= NULL
;
2360 /* Does an interactive user really want to do this? Include
2361 information, such as how well GDB can handle the return value, in
2362 the query message. */
2367 if (thisfun
== NULL
)
2368 confirmed
= query (_("%sMake selected stack frame return now? "),
2371 confirmed
= query (_("%sMake %s return now? "), query_prefix
,
2372 SYMBOL_PRINT_NAME (thisfun
));
2374 error (_("Not confirmed"));
2377 /* Discard the selected frame and all frames inner-to it. */
2378 frame_pop (get_selected_frame (NULL
));
2380 /* Store RETURN_VALUE in the just-returned register set. */
2381 if (return_value
!= NULL
)
2383 struct type
*return_type
= value_type (return_value
);
2384 struct gdbarch
*gdbarch
= get_regcache_arch (get_current_regcache ());
2386 gdb_assert (rv_conv
!= RETURN_VALUE_STRUCT_CONVENTION
2387 && rv_conv
!= RETURN_VALUE_ABI_RETURNS_ADDRESS
);
2388 gdbarch_return_value (gdbarch
, function
, return_type
,
2389 get_current_regcache (), NULL
/*read*/,
2390 value_contents (return_value
) /*write*/);
2393 /* If we are at the end of a call dummy now, pop the dummy frame
2395 if (get_frame_type (get_current_frame ()) == DUMMY_FRAME
)
2396 frame_pop (get_current_frame ());
2398 /* If interactive, print the frame that is now current. */
2400 frame_command ("0", 1);
2402 select_frame_command ("0", 0);
2405 /* Sets the scope to input function name, provided that the function
2406 is within the current stack frame. */
2408 struct function_bounds
2410 CORE_ADDR low
, high
;
2414 func_command (char *arg
, int from_tty
)
2416 struct frame_info
*frame
;
2418 struct symtabs_and_lines sals
;
2421 struct function_bounds
*func_bounds
= NULL
;
2422 struct cleanup
*cleanups
;
2427 frame
= parse_frame_specification ("0");
2428 sals
= decode_line_with_current_source (arg
, DECODE_LINE_FUNFIRSTLINE
);
2429 cleanups
= make_cleanup (xfree
, sals
.sals
);
2430 func_bounds
= (struct function_bounds
*) xmalloc (
2431 sizeof (struct function_bounds
) * sals
.nelts
);
2432 make_cleanup (xfree
, func_bounds
);
2433 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
2435 if (sals
.sals
[i
].pspace
!= current_program_space
)
2436 func_bounds
[i
].low
= func_bounds
[i
].high
= 0;
2437 else if (sals
.sals
[i
].pc
== 0
2438 || find_pc_partial_function (sals
.sals
[i
].pc
, NULL
,
2439 &func_bounds
[i
].low
,
2440 &func_bounds
[i
].high
) == 0)
2442 func_bounds
[i
].low
= func_bounds
[i
].high
= 0;
2448 for (i
= 0; (i
< sals
.nelts
&& !found
); i
++)
2449 found
= (get_frame_pc (frame
) >= func_bounds
[i
].low
2450 && get_frame_pc (frame
) < func_bounds
[i
].high
);
2454 frame
= find_relative_frame (frame
, &level
);
2457 while (!found
&& level
== 0);
2459 do_cleanups (cleanups
);
2462 printf_filtered (_("'%s' not within current stack frame.\n"), arg
);
2463 else if (frame
!= get_selected_frame (NULL
))
2464 select_and_print_frame (frame
);
2467 /* Gets the language of the current frame. */
2470 get_frame_language (void)
2472 struct frame_info
*frame
= deprecated_safe_get_selected_frame ();
2476 volatile struct gdb_exception ex
;
2480 /* We determine the current frame language by looking up its
2481 associated symtab. To retrieve this symtab, we use the frame
2482 PC. However we cannot use the frame PC as is, because it
2483 usually points to the instruction following the "call", which
2484 is sometimes the first instruction of another function. So
2485 we rely on get_frame_address_in_block(), it provides us with
2486 a PC that is guaranteed to be inside the frame's code
2489 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
2491 pc
= get_frame_address_in_block (frame
);
2495 if (ex
.error
!= NOT_AVAILABLE_ERROR
)
2496 throw_exception (ex
);
2500 s
= find_pc_symtab (pc
);
2506 return language_unknown
;
2510 /* Provide a prototype to silence -Wmissing-prototypes. */
2511 void _initialize_stack (void);
2514 _initialize_stack (void)
2516 add_com ("return", class_stack
, return_command
, _("\
2517 Make selected stack frame return to its caller.\n\
2518 Control remains in the debugger, but when you continue\n\
2519 execution will resume in the frame above the one now selected.\n\
2520 If an argument is given, it is an expression for the value to return."));
2522 add_com ("up", class_stack
, up_command
, _("\
2523 Select and print stack frame that called this one.\n\
2524 An argument says how many frames up to go."));
2525 add_com ("up-silently", class_support
, up_silently_command
, _("\
2526 Same as the `up' command, but does not print anything.\n\
2527 This is useful in command scripts."));
2529 add_com ("down", class_stack
, down_command
, _("\
2530 Select and print stack frame called by this one.\n\
2531 An argument says how many frames down to go."));
2532 add_com_alias ("do", "down", class_stack
, 1);
2533 add_com_alias ("dow", "down", class_stack
, 1);
2534 add_com ("down-silently", class_support
, down_silently_command
, _("\
2535 Same as the `down' command, but does not print anything.\n\
2536 This is useful in command scripts."));
2538 add_com ("frame", class_stack
, frame_command
, _("\
2539 Select and print a stack frame.\nWith no argument, \
2540 print the selected stack frame. (See also \"info frame\").\n\
2541 An argument specifies the frame to select.\n\
2542 It can be a stack frame number or the address of the frame.\n\
2543 With argument, nothing is printed if input is coming from\n\
2544 a command file or a user-defined command."));
2546 add_com_alias ("f", "frame", class_stack
, 1);
2550 add_com ("L", class_stack
, current_frame_command
,
2551 _("Print the current stack frame.\n"));
2552 add_com_alias ("V", "frame", class_stack
, 1);
2554 add_com ("select-frame", class_stack
, select_frame_command
, _("\
2555 Select a stack frame without printing anything.\n\
2556 An argument specifies the frame to select.\n\
2557 It can be a stack frame number or the address of the frame.\n"));
2559 add_com ("backtrace", class_stack
, backtrace_command
, _("\
2560 Print backtrace of all stack frames, or innermost COUNT frames.\n\
2561 With a negative argument, print outermost -COUNT frames.\nUse of the \
2562 'full' qualifier also prints the values of the local variables.\n"));
2563 add_com_alias ("bt", "backtrace", class_stack
, 0);
2566 add_com_alias ("t", "backtrace", class_stack
, 0);
2567 add_com ("T", class_stack
, backtrace_full_command
, _("\
2568 Print backtrace of all stack frames, or innermost COUNT frames\n\
2569 and the values of the local variables.\n\
2570 With a negative argument, print outermost -COUNT frames.\n\
2571 Usage: T <count>\n"));
2574 add_com_alias ("where", "backtrace", class_alias
, 0);
2575 add_info ("stack", backtrace_command
,
2576 _("Backtrace of the stack, or innermost COUNT frames."));
2577 add_info_alias ("s", "stack", 1);
2578 add_info ("frame", frame_info
,
2579 _("All about selected stack frame, or frame at ADDR."));
2580 add_info_alias ("f", "frame", 1);
2581 add_info ("locals", locals_info
,
2582 _("Local variables of current stack frame."));
2583 add_info ("args", args_info
,
2584 _("Argument variables of current stack frame."));
2586 add_com ("l", class_info
, args_plus_locals_info
,
2587 _("Argument and local variables of current stack frame."));
2590 add_com ("func", class_stack
, func_command
, _("\
2591 Select the stack frame that contains <func>.\n\
2592 Usage: func <name>\n"));
2594 add_setshow_enum_cmd ("frame-arguments", class_stack
,
2595 print_frame_arguments_choices
, &print_frame_arguments
,
2596 _("Set printing of non-scalar frame arguments"),
2597 _("Show printing of non-scalar frame arguments"),
2598 NULL
, NULL
, NULL
, &setprintlist
, &showprintlist
);
2600 add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack
,
2601 &disassemble_next_line
, _("\
2602 Set whether to disassemble next source line or insn when execution stops."),
2604 Show whether to disassemble next source line or insn when execution stops."),
2606 If ON, GDB will display disassembly of the next source line, in addition\n\
2607 to displaying the source line itself. If the next source line cannot\n\
2608 be displayed (e.g., source is unavailable or there's no line info), GDB\n\
2609 will display disassembly of next instruction instead of showing the\n\
2611 If AUTO, display disassembly of next instruction only if the source line\n\
2612 cannot be displayed.\n\
2613 If OFF (which is the default), never display the disassembly of the next\n\
2616 show_disassemble_next_line
,
2617 &setlist
, &showlist
);
2618 disassemble_next_line
= AUTO_BOOLEAN_FALSE
;
2620 add_setshow_enum_cmd ("entry-values", class_stack
,
2621 print_entry_values_choices
, &print_entry_values
,
2622 _("Set printing of function arguments at function "
2624 _("Show printing of function arguments at function "
2627 GDB can sometimes determine the values of function arguments at entry,\n\
2628 in addition to their current values. This option tells GDB whether\n\
2629 to print the current value, the value at entry (marked as val@entry),\n\
2630 or both. Note that one or both of these values may be <optimized out>."),
2631 NULL
, NULL
, &setprintlist
, &showprintlist
);