1 /* Print and select stack frames for GDB, the GNU debugger.
3 Copyright (C) 1986-2016 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"
51 #include "safe-ctype.h"
53 #include "extension.h"
55 /* The possible choices of "set print frame-arguments", and the value
58 static const char *const print_frame_arguments_choices[] =
59 {"all", "scalars", "none", NULL};
60 static const char *print_frame_arguments = "scalars";
62 /* If non-zero, don't invoke pretty-printers for frame arguments. */
63 static int print_raw_frame_arguments;
65 /* The possible choices of "set print entry-values", and the value
68 const char print_entry_values_no[] = "no";
69 const char print_entry_values_only[] = "only";
70 const char print_entry_values_preferred[] = "preferred";
71 const char print_entry_values_if_needed[] = "if-needed";
72 const char print_entry_values_both[] = "both";
73 const char print_entry_values_compact[] = "compact";
74 const char print_entry_values_default[] = "default";
75 static const char *const print_entry_values_choices[] =
77 print_entry_values_no,
78 print_entry_values_only,
79 print_entry_values_preferred,
80 print_entry_values_if_needed,
81 print_entry_values_both,
82 print_entry_values_compact,
83 print_entry_values_default,
86 const char *print_entry_values = print_entry_values_default;
88 /* Prototypes for local functions. */
90 static void print_frame_local_vars (struct frame_info *, int,
93 static void print_frame (struct frame_info *frame, int print_level,
94 enum print_what print_what, int print_args,
95 struct symtab_and_line sal);
97 static void set_last_displayed_sal (int valid,
98 struct program_space *pspace,
100 struct symtab *symtab,
103 /* Zero means do things normally; we are interacting directly with the
104 user. One means print the full filename and linenumber when a
105 frame is printed, and do so in a format emacs18/emacs19.22 can
106 parse. Two means print similar annotations, but in many more
107 cases and in a slightly different syntax. */
109 int annotation_level = 0;
111 /* These variables hold the last symtab and line we displayed to the user.
112 * This is where we insert a breakpoint or a skiplist entry by default. */
113 static int last_displayed_sal_valid = 0;
114 static struct program_space *last_displayed_pspace = 0;
115 static CORE_ADDR last_displayed_addr = 0;
116 static struct symtab *last_displayed_symtab = 0;
117 static int last_displayed_line = 0;
120 /* Return 1 if we should display the address in addition to the location,
121 because we are in the middle of a statement. */
124 frame_show_address (struct frame_info *frame,
125 struct symtab_and_line sal)
127 /* If there is a line number, but no PC, then there is no location
128 information associated with this sal. The only way that should
129 happen is for the call sites of inlined functions (SAL comes from
130 find_frame_sal). Otherwise, we would have some PC range if the
131 SAL came from a line table. */
132 if (sal.line != 0 && sal.pc == 0 && sal.end == 0)
134 if (get_next_frame (frame) == NULL)
135 gdb_assert (inline_skipped_frames (inferior_ptid) > 0);
137 gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME);
141 return get_frame_pc (frame) != sal.pc;
144 /* Show or print a stack frame FRAME briefly. The output is formatted
145 according to PRINT_LEVEL and PRINT_WHAT printing the frame's
146 relative level, function name, argument list, and file name and
147 line number. If the frame's PC is not at the beginning of the
148 source line, the actual PC is printed at the beginning. */
151 print_stack_frame (struct frame_info *frame, int print_level,
152 enum print_what print_what,
156 /* For mi, alway print location and address. */
157 if (ui_out_is_mi_like_p (current_uiout))
158 print_what = LOC_AND_ADDRESS;
162 print_frame_info (frame, print_level, print_what, 1 /* print_args */,
165 set_current_sal_from_frame (frame);
167 CATCH (e, RETURN_MASK_ERROR)
173 /* Print nameless arguments of frame FRAME on STREAM, where START is
174 the offset of the first nameless argument, and NUM is the number of
175 nameless arguments to print. FIRST is nonzero if this is the first
176 argument (not just the first nameless argument). */
179 print_frame_nameless_args (struct frame_info *frame, long start, int num,
180 int first, struct ui_file *stream)
182 struct gdbarch *gdbarch = get_frame_arch (frame);
183 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
188 for (i = 0; i < num; i++)
191 argsaddr = get_frame_args_address (frame);
194 arg_value = read_memory_integer (argsaddr + start,
195 sizeof (int), byte_order);
197 fprintf_filtered (stream, ", ");
198 fprintf_filtered (stream, "%ld", arg_value);
200 start += sizeof (int);
204 /* Print single argument of inferior function. ARG must be already
207 Errors are printed as if they would be the parameter value. Use zeroed ARG
208 iff it should not be printed accoring to user settings. */
211 print_frame_arg (const struct frame_arg *arg)
213 struct ui_out *uiout = current_uiout;
214 struct cleanup *old_chain;
216 const char *error_message = NULL;
218 stb = mem_fileopen ();
219 old_chain = make_cleanup_ui_file_delete (stb);
221 gdb_assert (!arg->val || !arg->error);
222 gdb_assert (arg->entry_kind == print_entry_values_no
223 || arg->entry_kind == print_entry_values_only
224 || (!ui_out_is_mi_like_p (uiout)
225 && arg->entry_kind == print_entry_values_compact));
227 annotate_arg_begin ();
229 make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
230 fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym),
231 SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI);
232 if (arg->entry_kind == print_entry_values_compact)
234 /* It is OK to provide invalid MI-like stream as with
235 PRINT_ENTRY_VALUE_COMPACT we never use MI. */
236 fputs_filtered ("=", stb);
238 fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym),
239 SYMBOL_LANGUAGE (arg->sym),
240 DMGL_PARAMS | DMGL_ANSI);
242 if (arg->entry_kind == print_entry_values_only
243 || arg->entry_kind == print_entry_values_compact)
244 fputs_filtered ("@entry", stb);
245 ui_out_field_stream (uiout, "name", stb);
246 annotate_arg_name_end ();
247 ui_out_text (uiout, "=");
249 if (!arg->val && !arg->error)
250 ui_out_text (uiout, "...");
254 error_message = arg->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_no_prettyformat_print_options (&opts);
279 opts.raw = print_raw_frame_arguments;
281 /* True in "summary" mode, false otherwise. */
282 opts.summary = !strcmp (print_frame_arguments, "scalars");
284 common_val_print (arg->val, stb, 2, &opts, language);
286 CATCH (except, RETURN_MASK_ERROR)
288 error_message = except.message;
292 if (error_message != NULL)
293 fprintf_filtered (stb, _("<error reading variable: %s>"),
297 ui_out_field_stream (uiout, "value", stb);
299 /* Also invoke ui_out_tuple_end. */
300 do_cleanups (old_chain);
305 /* Read in inferior function local SYM at FRAME into ARGP. Caller is
306 responsible for xfree of ARGP->ERROR. This function never throws an
310 read_frame_local (struct symbol *sym, struct frame_info *frame,
311 struct frame_arg *argp)
319 argp->val = read_var_value (sym, NULL, frame);
321 CATCH (except, RETURN_MASK_ERROR)
323 argp->error = xstrdup (except.message);
328 /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is
329 responsible for xfree of ARGP->ERROR. This function never throws an
333 read_frame_arg (struct symbol *sym, struct frame_info *frame,
334 struct frame_arg *argp, struct frame_arg *entryargp)
336 struct value *val = NULL, *entryval = NULL;
337 char *val_error = NULL, *entryval_error = NULL;
340 if (print_entry_values != print_entry_values_only
341 && print_entry_values != print_entry_values_preferred)
345 val = read_var_value (sym, NULL, frame);
347 CATCH (except, RETURN_MASK_ERROR)
349 val_error = (char *) alloca (strlen (except.message) + 1);
350 strcpy (val_error, except.message);
355 if (SYMBOL_COMPUTED_OPS (sym) != NULL
356 && SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry != NULL
357 && print_entry_values != print_entry_values_no
358 && (print_entry_values != print_entry_values_if_needed
359 || !val || value_optimized_out (val)))
363 const struct symbol_computed_ops *ops;
365 ops = SYMBOL_COMPUTED_OPS (sym);
366 entryval = ops->read_variable_at_entry (sym, frame);
368 CATCH (except, RETURN_MASK_ERROR)
370 if (except.error != NO_ENTRY_VALUE_ERROR)
372 entryval_error = (char *) alloca (strlen (except.message) + 1);
373 strcpy (entryval_error, except.message);
378 if (entryval != NULL && value_optimized_out (entryval))
381 if (print_entry_values == print_entry_values_compact
382 || print_entry_values == print_entry_values_default)
384 /* For MI do not try to use print_entry_values_compact for ARGP. */
386 if (val && entryval && !ui_out_is_mi_like_p (current_uiout))
388 struct type *type = value_type (val);
390 if (value_lazy (val))
391 value_fetch_lazy (val);
392 if (value_lazy (entryval))
393 value_fetch_lazy (entryval);
395 if (value_contents_eq (val, 0, entryval, 0, TYPE_LENGTH (type)))
397 /* Initialize it just to avoid a GCC false warning. */
398 struct value *val_deref = NULL, *entryval_deref;
400 /* DW_AT_GNU_call_site_value does match with the current
401 value. If it is a reference still try to verify if
402 dereferenced DW_AT_GNU_call_site_data_value does not
407 struct type *type_deref;
409 val_deref = coerce_ref (val);
410 if (value_lazy (val_deref))
411 value_fetch_lazy (val_deref);
412 type_deref = value_type (val_deref);
414 entryval_deref = coerce_ref (entryval);
415 if (value_lazy (entryval_deref))
416 value_fetch_lazy (entryval_deref);
418 /* If the reference addresses match but dereferenced
419 content does not match print them. */
421 && value_contents_eq (val_deref, 0,
423 TYPE_LENGTH (type_deref)))
426 CATCH (except, RETURN_MASK_ERROR)
428 /* If the dereferenced content could not be
429 fetched do not display anything. */
430 if (except.error == NO_ENTRY_VALUE_ERROR)
432 else if (except.message != NULL)
434 entryval_error = (char *) alloca (strlen (except.message) + 1);
435 strcpy (entryval_error, except.message);
440 /* Value was not a reference; and its content matches. */
441 if (val == val_deref)
449 /* Try to remove possibly duplicate error message for ENTRYARGP even
452 if (val_error && entryval_error
453 && strcmp (val_error, entryval_error) == 0)
455 entryval_error = NULL;
457 /* Do not se VAL_EQUAL as the same error message may be shown for
458 the entry value even if no entry values are present in the
464 if (entryval == NULL)
466 if (print_entry_values == print_entry_values_preferred)
468 gdb_assert (val == NULL);
472 val = read_var_value (sym, NULL, frame);
474 CATCH (except, RETURN_MASK_ERROR)
476 val_error = (char *) alloca (strlen (except.message) + 1);
477 strcpy (val_error, except.message);
481 if (print_entry_values == print_entry_values_only
482 || print_entry_values == print_entry_values_both
483 || (print_entry_values == print_entry_values_preferred
484 && (!val || value_optimized_out (val))))
486 entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym));
487 entryval_error = NULL;
490 if ((print_entry_values == print_entry_values_compact
491 || print_entry_values == print_entry_values_if_needed
492 || print_entry_values == print_entry_values_preferred)
493 && (!val || value_optimized_out (val)) && entryval != NULL)
501 argp->error = val_error ? xstrdup (val_error) : NULL;
502 if (!val && !val_error)
503 argp->entry_kind = print_entry_values_only;
504 else if ((print_entry_values == print_entry_values_compact
505 || print_entry_values == print_entry_values_default) && val_equal)
507 argp->entry_kind = print_entry_values_compact;
508 gdb_assert (!ui_out_is_mi_like_p (current_uiout));
511 argp->entry_kind = print_entry_values_no;
513 entryargp->sym = sym;
514 entryargp->val = entryval;
515 entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL;
516 if (!entryval && !entryval_error)
517 entryargp->entry_kind = print_entry_values_no;
519 entryargp->entry_kind = print_entry_values_only;
522 /* Print the arguments of frame FRAME on STREAM, given the function
523 FUNC running in that frame (as a symbol), where NUM is the number
524 of arguments according to the stack frame (or -1 if the number of
525 arguments is unknown). */
527 /* Note that currently the "number of arguments according to the
528 stack frame" is only known on VAX where i refers to the "number of
529 ints of arguments according to the stack frame". */
532 print_frame_args (struct symbol *func, struct frame_info *frame,
533 int num, struct ui_file *stream)
535 struct ui_out *uiout = current_uiout;
537 /* Offset of next stack argument beyond the one we have seen that is
538 at the highest offset, or -1 if we haven't come to a stack
540 long highest_offset = -1;
541 /* Number of ints of arguments that we have printed so far. */
542 int args_printed = 0;
543 struct cleanup *old_chain;
545 /* True if we should print arguments, false otherwise. */
546 int print_args = strcmp (print_frame_arguments, "none");
548 stb = mem_fileopen ();
549 old_chain = make_cleanup_ui_file_delete (stb);
553 const struct block *b = SYMBOL_BLOCK_VALUE (func);
554 struct block_iterator iter;
557 ALL_BLOCK_SYMBOLS (b, iter, sym)
559 struct frame_arg arg, entryarg;
563 /* Keep track of the highest stack argument offset seen, and
564 skip over any kinds of symbols we don't care about. */
566 if (!SYMBOL_IS_ARGUMENT (sym))
569 switch (SYMBOL_CLASS (sym))
574 long current_offset = SYMBOL_VALUE (sym);
575 int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym));
577 /* Compute address of next argument by adding the size of
578 this argument and rounding to an int boundary. */
580 ((current_offset + arg_size + sizeof (int) - 1)
581 & ~(sizeof (int) - 1));
583 /* If this is the highest offset seen yet, set
585 if (highest_offset == -1
586 || (current_offset > highest_offset))
587 highest_offset = current_offset;
589 /* Add the number of ints we're about to print to
591 args_printed += (arg_size + sizeof (int) - 1) / sizeof (int);
594 /* We care about types of symbols, but don't need to
595 keep track of stack offsets in them. */
597 case LOC_REGPARM_ADDR:
599 case LOC_OPTIMIZED_OUT:
604 /* We have to look up the symbol because arguments can have
605 two entries (one a parameter, one a local) and the one we
606 want is the local, which lookup_symbol will find for us.
607 This includes gcc1 (not gcc2) on SPARC when passing a
608 small structure and gcc2 when the argument type is float
609 and it is passed as a double and converted to float by
610 the prologue (in the latter case the type of the LOC_ARG
611 symbol is double and the type of the LOC_LOCAL symbol is
613 /* But if the parameter name is null, don't try it. Null
614 parameter names occur on the RS/6000, for traceback
615 tables. FIXME, should we even print them? */
617 if (*SYMBOL_LINKAGE_NAME (sym))
621 nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
622 b, VAR_DOMAIN, NULL).symbol;
623 gdb_assert (nsym != NULL);
624 if (SYMBOL_CLASS (nsym) == LOC_REGISTER
625 && !SYMBOL_IS_ARGUMENT (nsym))
627 /* There is a LOC_ARG/LOC_REGISTER pair. This means
628 that it was passed on the stack and loaded into a
629 register, or passed in a register and stored in a
630 stack slot. GDB 3.x used the LOC_ARG; GDB
631 4.0-4.11 used the LOC_REGISTER.
633 Reasons for using the LOC_ARG:
635 (1) Because find_saved_registers may be slow for
638 (2) Because registers are often re-used and stack
639 slots rarely (never?) are. Therefore using
640 the stack slot is much less likely to print
643 Reasons why we might want to use the LOC_REGISTER:
645 (1) So that the backtrace prints the same value
646 as "print foo". I see no compelling reason
647 why this needs to be the case; having the
648 backtrace print the value which was passed
649 in, and "print foo" print the value as
650 modified within the called function, makes
653 Additional note: It might be nice if "info args"
654 displayed both values.
656 One more note: There is a case with SPARC
657 structure passing where we need to use the
658 LOC_REGISTER, but this is dealt with by creating
659 a single LOC_REGPARM in symbol reading. */
661 /* Leave sym (the LOC_ARG) alone. */
668 /* Print the current arg. */
670 ui_out_text (uiout, ", ");
671 ui_out_wrap_hint (uiout, " ");
675 memset (&arg, 0, sizeof (arg));
677 arg.entry_kind = print_entry_values_no;
678 memset (&entryarg, 0, sizeof (entryarg));
680 entryarg.entry_kind = print_entry_values_no;
683 read_frame_arg (sym, frame, &arg, &entryarg);
685 if (arg.entry_kind != print_entry_values_only)
686 print_frame_arg (&arg);
688 if (entryarg.entry_kind != print_entry_values_no)
690 if (arg.entry_kind != print_entry_values_only)
692 ui_out_text (uiout, ", ");
693 ui_out_wrap_hint (uiout, " ");
696 print_frame_arg (&entryarg);
700 xfree (entryarg.error);
706 /* Don't print nameless args in situations where we don't know
707 enough about the stack to find them. */
712 if (highest_offset == -1)
713 start = gdbarch_frame_args_skip (get_frame_arch (frame));
715 start = highest_offset;
717 print_frame_nameless_args (frame, start, num - args_printed,
721 do_cleanups (old_chain);
724 /* Set the current source and line to the location given by frame
725 FRAME, if possible. When CENTER is true, adjust so the relevant
726 line is in the center of the next 'list'. */
729 set_current_sal_from_frame (struct frame_info *frame)
731 struct symtab_and_line sal;
733 find_frame_sal (frame, &sal);
734 if (sal.symtab != NULL)
735 set_current_source_symtab_and_line (&sal);
738 /* If ON, GDB will display disassembly of the next source line when
739 execution of the program being debugged stops.
740 If AUTO (which is the default), or there's no line info to determine
741 the source line of the next instruction, display disassembly of next
742 instruction instead. */
744 static enum auto_boolean disassemble_next_line;
747 show_disassemble_next_line (struct ui_file *file, int from_tty,
748 struct cmd_list_element *c,
751 fprintf_filtered (file,
752 _("Debugger's willingness to use "
753 "disassemble-next-line is %s.\n"),
757 /* Use TRY_CATCH to catch the exception from the gdb_disassembly
758 because it will be broken by filter sometime. */
761 do_gdb_disassembly (struct gdbarch *gdbarch,
762 int how_many, CORE_ADDR low, CORE_ADDR high)
767 gdb_disassembly (gdbarch, current_uiout, 0,
768 DISASSEMBLY_RAW_INSN, how_many,
771 CATCH (exception, RETURN_MASK_ERROR)
773 /* If an exception was thrown while doing the disassembly, print
774 the error message, to give the user a clue of what happened. */
775 exception_print (gdb_stderr, exception);
780 /* Print information about frame FRAME. The output is format according
781 to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of
784 SRC_LINE: Print only source line.
785 LOCATION: Print only location.
786 LOC_AND_SRC: Print location and source line.
788 Used in "where" output, and to emit breakpoint or step
792 print_frame_info (struct frame_info *frame, int print_level,
793 enum print_what print_what, int print_args,
796 struct gdbarch *gdbarch = get_frame_arch (frame);
797 struct symtab_and_line sal;
800 struct ui_out *uiout = current_uiout;
802 if (get_frame_type (frame) == DUMMY_FRAME
803 || get_frame_type (frame) == SIGTRAMP_FRAME
804 || get_frame_type (frame) == ARCH_FRAME)
806 struct cleanup *uiout_cleanup
807 = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
809 annotate_frame_begin (print_level ? frame_relative_level (frame) : 0,
810 gdbarch, get_frame_pc (frame));
812 /* Do this regardless of SOURCE because we don't have any source
813 to list for this frame. */
816 ui_out_text (uiout, "#");
817 ui_out_field_fmt_int (uiout, 2, ui_left, "level",
818 frame_relative_level (frame));
820 if (ui_out_is_mi_like_p (uiout))
822 annotate_frame_address ();
823 ui_out_field_core_addr (uiout, "addr",
824 gdbarch, get_frame_pc (frame));
825 annotate_frame_address_end ();
828 if (get_frame_type (frame) == DUMMY_FRAME)
830 annotate_function_call ();
831 ui_out_field_string (uiout, "func", "<function called from gdb>");
833 else if (get_frame_type (frame) == SIGTRAMP_FRAME)
835 annotate_signal_handler_caller ();
836 ui_out_field_string (uiout, "func", "<signal handler called>");
838 else if (get_frame_type (frame) == ARCH_FRAME)
840 ui_out_field_string (uiout, "func", "<cross-architecture call>");
842 ui_out_text (uiout, "\n");
843 annotate_frame_end ();
845 /* If disassemble-next-line is set to auto or on output the next
847 if (disassemble_next_line == AUTO_BOOLEAN_AUTO
848 || disassemble_next_line == AUTO_BOOLEAN_TRUE)
849 do_gdb_disassembly (get_frame_arch (frame), 1,
850 get_frame_pc (frame), get_frame_pc (frame) + 1);
852 do_cleanups (uiout_cleanup);
856 /* If FRAME is not the innermost frame, that normally means that
857 FRAME->pc points to *after* the call instruction, and we want to
858 get the line containing the call, never the next line. But if
859 the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the
860 next frame was not entered as the result of a call, and we want
861 to get the line containing FRAME->pc. */
862 find_frame_sal (frame, &sal);
864 location_print = (print_what == LOCATION
865 || print_what == LOC_AND_ADDRESS
866 || print_what == SRC_AND_LOC);
868 if (location_print || !sal.symtab)
869 print_frame (frame, print_level, print_what, print_args, sal);
871 source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC);
873 /* If disassemble-next-line is set to auto or on and doesn't have
874 the line debug messages for $pc, output the next instruction. */
875 if ((disassemble_next_line == AUTO_BOOLEAN_AUTO
876 || disassemble_next_line == AUTO_BOOLEAN_TRUE)
877 && source_print && !sal.symtab)
878 do_gdb_disassembly (get_frame_arch (frame), 1,
879 get_frame_pc (frame), get_frame_pc (frame) + 1);
881 if (source_print && sal.symtab)
884 int mid_statement = ((print_what == SRC_LINE)
885 && frame_show_address (frame, sal));
887 if (annotation_level)
888 done = identify_source_line (sal.symtab, sal.line, mid_statement,
889 get_frame_pc (frame));
892 if (deprecated_print_frame_info_listing_hook)
893 deprecated_print_frame_info_listing_hook (sal.symtab,
898 struct value_print_options opts;
900 get_user_print_options (&opts);
901 /* We used to do this earlier, but that is clearly
902 wrong. This function is used by many different
903 parts of gdb, including normal_stop in infrun.c,
904 which uses this to print out the current PC
905 when we stepi/nexti into the middle of a source
906 line. Only the command line really wants this
907 behavior. Other UIs probably would like the
908 ability to decide for themselves if it is desired. */
909 if (opts.addressprint && mid_statement)
911 ui_out_field_core_addr (uiout, "addr",
912 gdbarch, get_frame_pc (frame));
913 ui_out_text (uiout, "\t");
916 print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
920 /* If disassemble-next-line is set to on and there is line debug
921 messages, output assembly codes for next line. */
922 if (disassemble_next_line == AUTO_BOOLEAN_TRUE)
923 do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end);
930 if (get_frame_pc_if_available (frame, &pc))
931 set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line);
933 set_last_displayed_sal (0, 0, 0, 0, 0);
936 annotate_frame_end ();
938 gdb_flush (gdb_stdout);
941 /* Remember the last symtab and line we displayed, which we use e.g.
942 * as the place to put a breakpoint when the `break' command is
943 * invoked with no arguments. */
946 set_last_displayed_sal (int valid, struct program_space *pspace,
947 CORE_ADDR addr, struct symtab *symtab,
950 last_displayed_sal_valid = valid;
951 last_displayed_pspace = pspace;
952 last_displayed_addr = addr;
953 last_displayed_symtab = symtab;
954 last_displayed_line = line;
955 if (valid && pspace == NULL)
957 clear_last_displayed_sal ();
958 internal_error (__FILE__, __LINE__,
959 _("Trying to set NULL pspace."));
963 /* Forget the last sal we displayed. */
966 clear_last_displayed_sal (void)
968 last_displayed_sal_valid = 0;
969 last_displayed_pspace = 0;
970 last_displayed_addr = 0;
971 last_displayed_symtab = 0;
972 last_displayed_line = 0;
975 /* Is our record of the last sal we displayed valid? If not,
976 * the get_last_displayed_* functions will return NULL or 0, as
980 last_displayed_sal_is_valid (void)
982 return last_displayed_sal_valid;
985 /* Get the pspace of the last sal we displayed, if it's valid. */
987 struct program_space *
988 get_last_displayed_pspace (void)
990 if (last_displayed_sal_valid)
991 return last_displayed_pspace;
995 /* Get the address of the last sal we displayed, if it's valid. */
998 get_last_displayed_addr (void)
1000 if (last_displayed_sal_valid)
1001 return last_displayed_addr;
1005 /* Get the symtab of the last sal we displayed, if it's valid. */
1008 get_last_displayed_symtab (void)
1010 if (last_displayed_sal_valid)
1011 return last_displayed_symtab;
1015 /* Get the line of the last sal we displayed, if it's valid. */
1018 get_last_displayed_line (void)
1020 if (last_displayed_sal_valid)
1021 return last_displayed_line;
1025 /* Get the last sal we displayed, if it's valid. */
1028 get_last_displayed_sal (struct symtab_and_line *sal)
1030 if (last_displayed_sal_valid)
1032 sal->pspace = last_displayed_pspace;
1033 sal->pc = last_displayed_addr;
1034 sal->symtab = last_displayed_symtab;
1035 sal->line = last_displayed_line;
1047 /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function
1048 corresponding to FRAME. FUNNAME needs to be freed by the caller. */
1051 find_frame_funname (struct frame_info *frame, char **funname,
1052 enum language *funlang, struct symbol **funcp)
1054 struct symbol *func;
1057 *funlang = language_unknown;
1061 func = get_frame_function (frame);
1064 /* In certain pathological cases, the symtabs give the wrong
1065 function (when we are in the first function in a file which
1066 is compiled without debugging symbols, the previous function
1067 is compiled with debugging symbols, and the "foo.o" symbol
1068 that is supposed to tell us where the file with debugging
1069 symbols ends has been truncated by ar because it is longer
1070 than 15 characters). This also occurs if the user uses asm()
1071 to create a function but not stabs for it (in a file compiled
1074 So look in the minimal symbol tables as well, and if it comes
1075 up with a larger address for the function use that instead.
1076 I don't think this can ever cause any problems; there
1077 shouldn't be any minimal symbols in the middle of a function;
1078 if this is ever changed many parts of GDB will need to be
1079 changed (and we'll create a find_pc_minimal_function or some
1082 struct bound_minimal_symbol msymbol;
1084 /* Don't attempt to do this for inlined functions, which do not
1085 have a corresponding minimal symbol. */
1086 if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func)))
1088 = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame));
1090 memset (&msymbol, 0, sizeof (msymbol));
1092 if (msymbol.minsym != NULL
1093 && (BMSYMBOL_VALUE_ADDRESS (msymbol)
1094 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
1096 /* We also don't know anything about the function besides
1097 its address and name. */
1099 *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym));
1100 *funlang = MSYMBOL_LANGUAGE (msymbol.minsym);
1104 *funname = xstrdup (SYMBOL_PRINT_NAME (func));
1105 *funlang = SYMBOL_LANGUAGE (func);
1108 if (*funlang == language_cplus)
1110 /* It seems appropriate to use SYMBOL_PRINT_NAME() here,
1111 to display the demangled name that we already have
1112 stored in the symbol table, but we stored a version
1113 with DMGL_PARAMS turned on, and here we don't want to
1114 display parameters. So remove the parameters. */
1115 char *func_only = cp_remove_params (*funname);
1120 *funname = func_only;
1127 struct bound_minimal_symbol msymbol;
1130 if (!get_frame_address_in_block_if_available (frame, &pc))
1133 msymbol = lookup_minimal_symbol_by_pc (pc);
1134 if (msymbol.minsym != NULL)
1136 *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym));
1137 *funlang = MSYMBOL_LANGUAGE (msymbol.minsym);
1143 print_frame (struct frame_info *frame, int print_level,
1144 enum print_what print_what, int print_args,
1145 struct symtab_and_line sal)
1147 struct gdbarch *gdbarch = get_frame_arch (frame);
1148 struct ui_out *uiout = current_uiout;
1149 char *funname = NULL;
1150 enum language funlang = language_unknown;
1151 struct ui_file *stb;
1152 struct cleanup *old_chain, *list_chain;
1153 struct value_print_options opts;
1154 struct symbol *func;
1158 pc_p = get_frame_pc_if_available (frame, &pc);
1160 stb = mem_fileopen ();
1161 old_chain = make_cleanup_ui_file_delete (stb);
1163 find_frame_funname (frame, &funname, &funlang, &func);
1164 make_cleanup (xfree, funname);
1166 annotate_frame_begin (print_level ? frame_relative_level (frame) : 0,
1169 list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
1173 ui_out_text (uiout, "#");
1174 ui_out_field_fmt_int (uiout, 2, ui_left, "level",
1175 frame_relative_level (frame));
1177 get_user_print_options (&opts);
1178 if (opts.addressprint)
1180 || frame_show_address (frame, sal)
1181 || print_what == LOC_AND_ADDRESS)
1183 annotate_frame_address ();
1185 ui_out_field_core_addr (uiout, "addr", gdbarch, pc);
1187 ui_out_field_string (uiout, "addr", "<unavailable>");
1188 annotate_frame_address_end ();
1189 ui_out_text (uiout, " in ");
1191 annotate_frame_function_name ();
1192 fprintf_symbol_filtered (stb, funname ? funname : "??",
1193 funlang, DMGL_ANSI);
1194 ui_out_field_stream (uiout, "func", stb);
1195 ui_out_wrap_hint (uiout, " ");
1196 annotate_frame_args ();
1198 ui_out_text (uiout, " (");
1201 struct gdbarch *gdbarch = get_frame_arch (frame);
1203 struct cleanup *args_list_chain;
1205 if (gdbarch_frame_num_args_p (gdbarch))
1207 numargs = gdbarch_frame_num_args (gdbarch, frame);
1208 gdb_assert (numargs >= 0);
1213 args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args");
1216 print_frame_args (func, frame, numargs, gdb_stdout);
1218 CATCH (e, RETURN_MASK_ERROR)
1223 /* FIXME: ARGS must be a list. If one argument is a string it
1224 will have " that will not be properly escaped. */
1225 /* Invoke ui_out_tuple_end. */
1226 do_cleanups (args_list_chain);
1229 ui_out_text (uiout, ")");
1232 const char *filename_display;
1234 filename_display = symtab_to_filename_for_display (sal.symtab);
1235 annotate_frame_source_begin ();
1236 ui_out_wrap_hint (uiout, " ");
1237 ui_out_text (uiout, " at ");
1238 annotate_frame_source_file ();
1239 ui_out_field_string (uiout, "file", filename_display);
1240 if (ui_out_is_mi_like_p (uiout))
1242 const char *fullname = symtab_to_fullname (sal.symtab);
1244 ui_out_field_string (uiout, "fullname", fullname);
1246 annotate_frame_source_file_end ();
1247 ui_out_text (uiout, ":");
1248 annotate_frame_source_line ();
1249 ui_out_field_int (uiout, "line", sal.line);
1250 annotate_frame_source_end ();
1253 if (pc_p && (funname == NULL || sal.symtab == NULL))
1255 char *lib = solib_name_from_address (get_frame_program_space (frame),
1256 get_frame_pc (frame));
1260 annotate_frame_where ();
1261 ui_out_wrap_hint (uiout, " ");
1262 ui_out_text (uiout, " from ");
1263 ui_out_field_string (uiout, "from", lib);
1267 /* do_cleanups will call ui_out_tuple_end() for us. */
1268 do_cleanups (list_chain);
1269 ui_out_text (uiout, "\n");
1270 do_cleanups (old_chain);
1274 /* Read a frame specification in whatever the appropriate format is from
1275 FRAME_EXP. Call error() if the specification is in any way invalid (so
1276 this function never returns NULL). When SEPECTED_P is non-NULL set its
1277 target to indicate that the default selected frame was used. */
1279 static struct frame_info *
1280 parse_frame_specification (const char *frame_exp, int *selected_frame_p)
1283 struct value *args[4];
1284 CORE_ADDR addrs[ARRAY_SIZE (args)];
1286 if (frame_exp == NULL)
1294 struct cleanup *cleanup;
1297 /* Skip leading white space, bail of EOL. */
1298 frame_exp = skip_spaces_const (frame_exp);
1302 /* Parse the argument, extract it, save it. */
1304 *p && !ISSPACE (*p);
1306 addr_string = savestring (frame_exp, p - frame_exp);
1308 cleanup = make_cleanup (xfree, addr_string);
1310 /* NOTE: Parse and evaluate expression, but do not use
1311 functions such as parse_and_eval_long or
1312 parse_and_eval_address to also extract the value.
1313 Instead value_as_long and value_as_address are used.
1314 This avoids problems with expressions that contain
1316 if (numargs >= ARRAY_SIZE (args))
1317 error (_("Too many args in frame specification"));
1318 args[numargs++] = parse_and_eval (addr_string);
1320 do_cleanups (cleanup);
1324 /* If no args, default to the selected frame. */
1327 if (selected_frame_p != NULL)
1328 (*selected_frame_p) = 1;
1329 return get_selected_frame (_("No stack."));
1332 /* None of the remaining use the selected frame. */
1333 if (selected_frame_p != NULL)
1334 (*selected_frame_p) = 0;
1336 /* Assume the single arg[0] is an integer, and try using that to
1337 select a frame relative to current. */
1340 struct frame_info *fid;
1341 int level = value_as_long (args[0]);
1343 fid = find_relative_frame (get_current_frame (), &level);
1345 /* find_relative_frame was successful. */
1349 /* Convert each value into a corresponding address. */
1353 for (i = 0; i < numargs; i++)
1354 addrs[i] = value_as_address (args[i]);
1357 /* Assume that the single arg[0] is an address, use that to identify
1358 a frame with a matching ID. Should this also accept stack/pc or
1359 stack/pc/special. */
1362 struct frame_id id = frame_id_build_wild (addrs[0]);
1363 struct frame_info *fid;
1365 /* If (s)he specifies the frame with an address, he deserves
1366 what (s)he gets. Still, give the highest one that matches.
1367 (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't
1369 for (fid = get_current_frame ();
1371 fid = get_prev_frame (fid))
1373 if (frame_id_eq (id, get_frame_id (fid)))
1375 struct frame_info *prev_frame;
1379 prev_frame = get_prev_frame (fid);
1381 || !frame_id_eq (id, get_frame_id (prev_frame)))
1390 /* We couldn't identify the frame as an existing frame, but
1391 perhaps we can create one with a single argument. */
1393 return create_new_frame (addrs[0], 0);
1394 else if (numargs == 2)
1395 return create_new_frame (addrs[0], addrs[1]);
1397 error (_("Too many args in frame specification"));
1400 /* Print verbosely the selected frame or the frame at address
1401 ADDR_EXP. Absolutely all information in the frame is printed. */
1404 frame_info (char *addr_exp, int from_tty)
1406 struct frame_info *fi;
1407 struct symtab_and_line sal;
1408 struct symbol *func;
1410 struct frame_info *calling_frame_info;
1412 const char *funname = 0;
1413 enum language funlang = language_unknown;
1414 const char *pc_regname;
1415 int selected_frame_p;
1416 struct gdbarch *gdbarch;
1417 struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
1420 /* Initialize it to avoid "may be used uninitialized" warning. */
1421 CORE_ADDR caller_pc = 0;
1422 int caller_pc_p = 0;
1424 fi = parse_frame_specification (addr_exp, &selected_frame_p);
1425 gdbarch = get_frame_arch (fi);
1427 /* Name of the value returned by get_frame_pc(). Per comments, "pc"
1428 is not a good name. */
1429 if (gdbarch_pc_regnum (gdbarch) >= 0)
1430 /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can
1431 easily not match that of the internal value returned by
1433 pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch));
1435 /* But then, this is weird to. Even without gdbarch_pc_regnum, an
1436 architectures will often have a hardware register called "pc",
1437 and that register's value, again, can easily not match
1441 frame_pc_p = get_frame_pc_if_available (fi, &frame_pc);
1442 find_frame_sal (fi, &sal);
1443 func = get_frame_function (fi);
1447 funname = SYMBOL_PRINT_NAME (func);
1448 funlang = SYMBOL_LANGUAGE (func);
1449 if (funlang == language_cplus)
1451 /* It seems appropriate to use SYMBOL_PRINT_NAME() here,
1452 to display the demangled name that we already have
1453 stored in the symbol table, but we stored a version
1454 with DMGL_PARAMS turned on, and here we don't want to
1455 display parameters. So remove the parameters. */
1456 char *func_only = cp_remove_params (funname);
1460 funname = func_only;
1461 make_cleanup (xfree, func_only);
1465 else if (frame_pc_p)
1467 struct bound_minimal_symbol msymbol;
1469 msymbol = lookup_minimal_symbol_by_pc (frame_pc);
1470 if (msymbol.minsym != NULL)
1472 funname = MSYMBOL_PRINT_NAME (msymbol.minsym);
1473 funlang = MSYMBOL_LANGUAGE (msymbol.minsym);
1476 calling_frame_info = get_prev_frame (fi);
1478 if (selected_frame_p && frame_relative_level (fi) >= 0)
1480 printf_filtered (_("Stack level %d, frame at "),
1481 frame_relative_level (fi));
1485 printf_filtered (_("Stack frame at "));
1487 fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout);
1488 printf_filtered (":\n");
1489 printf_filtered (" %s = ", pc_regname);
1491 fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout);
1493 fputs_filtered ("<unavailable>", gdb_stdout);
1498 printf_filtered (" in ");
1499 fprintf_symbol_filtered (gdb_stdout, funname, funlang,
1500 DMGL_ANSI | DMGL_PARAMS);
1504 printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab),
1506 puts_filtered ("; ");
1508 printf_filtered ("saved %s = ", pc_regname);
1510 if (!frame_id_p (frame_unwind_caller_id (fi)))
1511 val_print_unavailable (gdb_stdout);
1516 caller_pc = frame_unwind_caller_pc (fi);
1519 CATCH (ex, RETURN_MASK_ERROR)
1523 case NOT_AVAILABLE_ERROR:
1524 val_print_unavailable (gdb_stdout);
1526 case OPTIMIZED_OUT_ERROR:
1527 val_print_not_saved (gdb_stdout);
1530 fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message);
1538 fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout);
1539 printf_filtered ("\n");
1541 if (calling_frame_info == NULL)
1543 enum unwind_stop_reason reason;
1545 reason = get_frame_unwind_stop_reason (fi);
1546 if (reason != UNWIND_NO_REASON)
1547 printf_filtered (_(" Outermost frame: %s\n"),
1548 frame_stop_reason_string (fi));
1550 else if (get_frame_type (fi) == TAILCALL_FRAME)
1551 puts_filtered (" tail call frame");
1552 else if (get_frame_type (fi) == INLINE_FRAME)
1553 printf_filtered (" inlined into frame %d",
1554 frame_relative_level (get_prev_frame (fi)));
1557 printf_filtered (" called by frame at ");
1558 fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)),
1561 if (get_next_frame (fi) && calling_frame_info)
1562 puts_filtered (",");
1564 if (get_next_frame (fi))
1566 printf_filtered (" caller of frame at ");
1567 fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))),
1570 if (get_next_frame (fi) || calling_frame_info)
1571 puts_filtered ("\n");
1574 printf_filtered (" source language %s.\n",
1575 language_str (s->language));
1578 /* Address of the argument list for this frame, or 0. */
1579 CORE_ADDR arg_list = get_frame_args_address (fi);
1580 /* Number of args for this frame, or -1 if unknown. */
1584 printf_filtered (" Arglist at unknown address.\n");
1587 printf_filtered (" Arglist at ");
1588 fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout);
1589 printf_filtered (",");
1591 if (!gdbarch_frame_num_args_p (gdbarch))
1594 puts_filtered (" args: ");
1598 numargs = gdbarch_frame_num_args (gdbarch, fi);
1599 gdb_assert (numargs >= 0);
1601 puts_filtered (" no args.");
1602 else if (numargs == 1)
1603 puts_filtered (" 1 arg: ");
1605 printf_filtered (" %d args: ", numargs);
1607 print_frame_args (func, fi, numargs, gdb_stdout);
1608 puts_filtered ("\n");
1612 /* Address of the local variables for this frame, or 0. */
1613 CORE_ADDR arg_list = get_frame_locals_address (fi);
1616 printf_filtered (" Locals at unknown address,");
1619 printf_filtered (" Locals at ");
1620 fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout);
1621 printf_filtered (",");
1625 /* Print as much information as possible on the location of all the
1628 enum lval_type lval;
1637 /* The sp is special; what's displayed isn't the save address, but
1638 the value of the previous frame's sp. This is a legacy thing,
1639 at one stage the frame cached the previous frame's SP instead
1640 of its address, hence it was easiest to just display the cached
1642 if (gdbarch_sp_regnum (gdbarch) >= 0)
1644 /* Find out the location of the saved stack pointer with out
1645 actually evaluating it. */
1646 frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch),
1647 &optimized, &unavailable, &lval, &addr,
1649 if (!optimized && !unavailable && lval == not_lval)
1651 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1652 int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch));
1653 gdb_byte value[MAX_REGISTER_SIZE];
1656 frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch),
1657 &optimized, &unavailable, &lval, &addr,
1659 /* NOTE: cagney/2003-05-22: This is assuming that the
1660 stack pointer was packed as an unsigned integer. That
1661 may or may not be valid. */
1662 sp = extract_unsigned_integer (value, sp_size, byte_order);
1663 printf_filtered (" Previous frame's sp is ");
1664 fputs_filtered (paddress (gdbarch, sp), gdb_stdout);
1665 printf_filtered ("\n");
1668 else if (!optimized && !unavailable && lval == lval_memory)
1670 printf_filtered (" Previous frame's sp at ");
1671 fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
1672 printf_filtered ("\n");
1675 else if (!optimized && !unavailable && lval == lval_register)
1677 printf_filtered (" Previous frame's sp in %s\n",
1678 gdbarch_register_name (gdbarch, realnum));
1681 /* else keep quiet. */
1685 numregs = gdbarch_num_regs (gdbarch)
1686 + gdbarch_num_pseudo_regs (gdbarch);
1687 for (i = 0; i < numregs; i++)
1688 if (i != gdbarch_sp_regnum (gdbarch)
1689 && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
1691 /* Find out the location of the saved register without
1692 fetching the corresponding value. */
1693 frame_register_unwind (fi, i, &optimized, &unavailable,
1694 &lval, &addr, &realnum, NULL);
1695 /* For moment, only display registers that were saved on the
1697 if (!optimized && !unavailable && lval == lval_memory)
1700 puts_filtered (" Saved registers:\n ");
1702 puts_filtered (",");
1704 printf_filtered (" %s at ",
1705 gdbarch_register_name (gdbarch, i));
1706 fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
1710 if (count || need_nl)
1711 puts_filtered ("\n");
1714 do_cleanups (back_to);
1717 /* Print briefly all stack frames or just the innermost COUNT_EXP
1721 backtrace_command_1 (char *count_exp, int show_locals, int no_filters,
1724 struct frame_info *fi;
1727 struct frame_info *trailing;
1728 int trailing_level, py_start = 0, py_end = 0;
1729 enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
1731 if (!target_has_stack)
1732 error (_("No stack."));
1734 /* The following code must do two things. First, it must set the
1735 variable TRAILING to the frame from which we should start
1736 printing. Second, it must set the variable count to the number
1737 of frames which we should print, or -1 if all of them. */
1738 trailing = get_current_frame ();
1743 count = parse_and_eval_long (count_exp);
1746 struct frame_info *current;
1752 while (current && count--)
1755 current = get_prev_frame (current);
1758 /* Will stop when CURRENT reaches the top of the stack.
1759 TRAILING will be COUNT below it. */
1763 trailing = get_prev_frame (trailing);
1764 current = get_prev_frame (current);
1784 /* Read in symbols for all of the frames. Need to do this in a
1785 separate pass so that "Reading in symbols for xxx" messages
1786 don't screw up the appearance of the backtrace. Also if
1787 people have strong opinions against reading symbols for
1788 backtrace this may have to be an option. */
1790 for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi))
1795 pc = get_frame_address_in_block (fi);
1796 expand_symtab_containing_pc (pc, find_pc_mapped_section (pc));
1802 int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS;
1803 enum ext_lang_frame_args arg_type;
1806 flags |= PRINT_LOCALS;
1808 if (!strcmp (print_frame_arguments, "scalars"))
1809 arg_type = CLI_SCALAR_VALUES;
1810 else if (!strcmp (print_frame_arguments, "all"))
1811 arg_type = CLI_ALL_VALUES;
1813 arg_type = NO_VALUES;
1815 result = apply_ext_lang_frame_filter (get_current_frame (), flags,
1816 arg_type, current_uiout,
1820 /* Run the inbuilt backtrace if there are no filters registered, or
1821 "no-filters" has been specified from the command. */
1822 if (no_filters || result == EXT_LANG_BT_NO_FILTERS)
1824 for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi))
1828 /* Don't use print_stack_frame; if an error() occurs it probably
1829 means further attempts to backtrace would fail (on the other
1830 hand, perhaps the code does or could be fixed to make sure
1831 the frame->prev field gets set to NULL in that case). */
1833 print_frame_info (fi, 1, LOCATION, 1, 0);
1836 struct frame_id frame_id = get_frame_id (fi);
1838 print_frame_local_vars (fi, 1, gdb_stdout);
1840 /* print_frame_local_vars invalidates FI. */
1841 fi = frame_find_by_id (frame_id);
1845 warning (_("Unable to restore previously selected frame."));
1850 /* Save the last frame to check for error conditions. */
1854 /* If we've stopped before the end, mention that. */
1856 printf_filtered (_("(More stack frames follow...)\n"));
1858 /* If we've run out of frames, and the reason appears to be an error
1859 condition, print it. */
1860 if (fi == NULL && trailing != NULL)
1862 enum unwind_stop_reason reason;
1864 reason = get_frame_unwind_stop_reason (trailing);
1865 if (reason >= UNWIND_FIRST_ERROR)
1866 printf_filtered (_("Backtrace stopped: %s\n"),
1867 frame_stop_reason_string (trailing));
1873 backtrace_command (char *arg, int from_tty)
1875 struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
1876 int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1;
1884 argv = gdb_buildargv (arg);
1885 make_cleanup_freeargv (argv);
1887 for (i = 0; argv[i]; i++)
1891 for (j = 0; j < strlen (argv[i]); j++)
1892 argv[i][j] = TOLOWER (argv[i][j]);
1894 if (no_filters < 0 && subset_compare (argv[i], "no-filters"))
1898 if (fulltrace_arg < 0 && subset_compare (argv[i], "full"))
1899 fulltrace_arg = argc;
1903 arglen += strlen (argv[i]);
1909 if (fulltrace_arg >= 0 || no_filters >= 0)
1913 arg = (char *) xmalloc (arglen + 1);
1914 make_cleanup (xfree, arg);
1916 for (i = 0; i < argc; i++)
1918 if (i != fulltrace_arg && i != no_filters)
1920 strcat (arg, argv[i]);
1930 backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */,
1931 no_filters >= 0 /* no frame-filters */, from_tty);
1933 do_cleanups (old_chain);
1936 /* Iterate over the local variables of a block B, calling CB with
1940 iterate_over_block_locals (const struct block *b,
1941 iterate_over_block_arg_local_vars_cb cb,
1944 struct block_iterator iter;
1947 ALL_BLOCK_SYMBOLS (b, iter, sym)
1949 switch (SYMBOL_CLASS (sym))
1955 if (SYMBOL_IS_ARGUMENT (sym))
1957 if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN)
1959 (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data);
1963 /* Ignore symbols which are not locals. */
1970 /* Same, but print labels. */
1973 /* Commented out, as the code using this function has also been
1974 commented out. FIXME:brobecker/2009-01-13: Find out why the code
1975 was commented out in the first place. The discussion introducing
1976 this change (2007-12-04: Support lexical blocks and function bodies
1977 that occupy non-contiguous address ranges) did not explain why
1978 this change was made. */
1980 print_block_frame_labels (struct gdbarch *gdbarch, struct block *b,
1981 int *have_default, struct ui_file *stream)
1983 struct block_iterator iter;
1985 int values_printed = 0;
1987 ALL_BLOCK_SYMBOLS (b, iter, sym)
1989 if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0)
1995 if (SYMBOL_CLASS (sym) == LOC_LABEL)
1997 struct symtab_and_line sal;
1998 struct value_print_options opts;
2000 sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
2002 fputs_filtered (SYMBOL_PRINT_NAME (sym), stream);
2003 get_user_print_options (&opts);
2004 if (opts.addressprint)
2006 fprintf_filtered (stream, " ");
2007 fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)),
2010 fprintf_filtered (stream, " in file %s, line %d\n",
2011 sal.symtab->filename, sal.line);
2015 return values_printed;
2019 /* Iterate over all the local variables in block B, including all its
2020 superblocks, stopping when the top-level block is reached. */
2023 iterate_over_block_local_vars (const struct block *block,
2024 iterate_over_block_arg_local_vars_cb cb,
2029 iterate_over_block_locals (block, cb, cb_data);
2030 /* After handling the function's top-level block, stop. Don't
2031 continue to its superblock, the block of per-file
2033 if (BLOCK_FUNCTION (block))
2035 block = BLOCK_SUPERBLOCK (block);
2039 /* Data to be passed around in the calls to the locals and args
2042 struct print_variable_and_value_data
2044 struct frame_id frame_id;
2046 struct ui_file *stream;
2050 /* The callback for the locals and args iterators. */
2053 do_print_variable_and_value (const char *print_name,
2057 struct print_variable_and_value_data *p
2058 = (struct print_variable_and_value_data *) cb_data;
2059 struct frame_info *frame;
2061 frame = frame_find_by_id (p->frame_id);
2064 warning (_("Unable to restore previously selected frame."));
2068 print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs);
2070 /* print_variable_and_value invalidates FRAME. */
2073 p->values_printed = 1;
2076 /* Print all variables from the innermost up to the function block of FRAME.
2077 Print them with values to STREAM indented by NUM_TABS.
2079 This function will invalidate FRAME. */
2082 print_frame_local_vars (struct frame_info *frame, int num_tabs,
2083 struct ui_file *stream)
2085 struct print_variable_and_value_data cb_data;
2086 const struct block *block;
2088 struct gdb_exception except = exception_none;
2090 if (!get_frame_pc_if_available (frame, &pc))
2092 fprintf_filtered (stream,
2093 _("PC unavailable, cannot determine locals.\n"));
2097 block = get_frame_block (frame, 0);
2100 fprintf_filtered (stream, "No symbol table info available.\n");
2104 cb_data.frame_id = get_frame_id (frame);
2105 cb_data.num_tabs = 4 * num_tabs;
2106 cb_data.stream = stream;
2107 cb_data.values_printed = 0;
2109 /* Temporarily change the selected frame to the given FRAME.
2110 This allows routines that rely on the selected frame instead
2111 of being given a frame as parameter to use the correct frame. */
2112 select_frame (frame);
2116 iterate_over_block_local_vars (block,
2117 do_print_variable_and_value,
2120 CATCH (ex, RETURN_MASK_ALL)
2126 /* Restore the selected frame, and then rethrow if there was a problem. */
2127 select_frame (frame_find_by_id (cb_data.frame_id));
2128 if (except.reason < 0)
2129 throw_exception (except);
2131 /* do_print_variable_and_value invalidates FRAME. */
2134 if (!cb_data.values_printed)
2135 fprintf_filtered (stream, _("No locals.\n"));
2139 locals_info (char *args, int from_tty)
2141 print_frame_local_vars (get_selected_frame (_("No frame selected.")),
2145 /* Iterate over all the argument variables in block B.
2147 Returns 1 if any argument was walked; 0 otherwise. */
2150 iterate_over_block_arg_vars (const struct block *b,
2151 iterate_over_block_arg_local_vars_cb cb,
2154 struct block_iterator iter;
2155 struct symbol *sym, *sym2;
2157 ALL_BLOCK_SYMBOLS (b, iter, sym)
2159 /* Don't worry about things which aren't arguments. */
2160 if (SYMBOL_IS_ARGUMENT (sym))
2162 /* We have to look up the symbol because arguments can have
2163 two entries (one a parameter, one a local) and the one we
2164 want is the local, which lookup_symbol will find for us.
2165 This includes gcc1 (not gcc2) on the sparc when passing a
2166 small structure and gcc2 when the argument type is float
2167 and it is passed as a double and converted to float by
2168 the prologue (in the latter case the type of the LOC_ARG
2169 symbol is double and the type of the LOC_LOCAL symbol is
2170 float). There are also LOC_ARG/LOC_REGISTER pairs which
2171 are not combined in symbol-reading. */
2173 sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
2174 b, VAR_DOMAIN, NULL).symbol;
2175 (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data);
2180 /* Print all argument variables of the function of FRAME.
2181 Print them with values to STREAM.
2183 This function will invalidate FRAME. */
2186 print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream)
2188 struct print_variable_and_value_data cb_data;
2189 struct symbol *func;
2192 if (!get_frame_pc_if_available (frame, &pc))
2194 fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n"));
2198 func = get_frame_function (frame);
2201 fprintf_filtered (stream, _("No symbol table info available.\n"));
2205 cb_data.frame_id = get_frame_id (frame);
2206 cb_data.num_tabs = 0;
2207 cb_data.stream = gdb_stdout;
2208 cb_data.values_printed = 0;
2210 iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func),
2211 do_print_variable_and_value, &cb_data);
2213 /* do_print_variable_and_value invalidates FRAME. */
2216 if (!cb_data.values_printed)
2217 fprintf_filtered (stream, _("No arguments.\n"));
2221 args_info (char *ignore, int from_tty)
2223 print_frame_arg_vars (get_selected_frame (_("No frame selected.")),
2227 /* Select frame FRAME. Also print the stack frame and show the source
2228 if this is the tui version. */
2230 select_and_print_frame (struct frame_info *frame)
2232 select_frame (frame);
2234 print_stack_frame (frame, 1, SRC_AND_LOC, 1);
2237 /* Return the symbol-block in which the selected frame is executing.
2238 Can return zero under various legitimate circumstances.
2240 If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant
2241 code address within the block returned. We use this to decide
2242 which macros are in scope. */
2244 const struct block *
2245 get_selected_block (CORE_ADDR *addr_in_block)
2247 if (!has_stack_frames ())
2250 return get_frame_block (get_selected_frame (NULL), addr_in_block);
2253 /* Find a frame a certain number of levels away from FRAME.
2254 LEVEL_OFFSET_PTR points to an int containing the number of levels.
2255 Positive means go to earlier frames (up); negative, the reverse.
2256 The int that contains the number of levels is counted toward
2257 zero as the frames for those levels are found.
2258 If the top or bottom frame is reached, that frame is returned,
2259 but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
2260 how much farther the original request asked to go. */
2263 find_relative_frame (struct frame_info *frame, int *level_offset_ptr)
2265 /* Going up is simple: just call get_prev_frame enough times or
2266 until the initial frame is reached. */
2267 while (*level_offset_ptr > 0)
2269 struct frame_info *prev = get_prev_frame (frame);
2273 (*level_offset_ptr)--;
2277 /* Going down is just as simple. */
2278 while (*level_offset_ptr < 0)
2280 struct frame_info *next = get_next_frame (frame);
2284 (*level_offset_ptr)++;
2291 /* The "select_frame" command. With no argument this is a NOP.
2292 Select the frame at level LEVEL_EXP if it is a valid level.
2293 Otherwise, treat LEVEL_EXP as an address expression and select it.
2295 See parse_frame_specification for more info on proper frame
2299 select_frame_command (char *level_exp, int from_tty)
2301 select_frame (parse_frame_specification (level_exp, NULL));
2304 /* The "frame" command. With no argument, print the selected frame
2305 briefly. With an argument, behave like select_frame and then print
2306 the selected frame. */
2309 frame_command (char *level_exp, int from_tty)
2311 select_frame_command (level_exp, from_tty);
2312 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
2315 /* Select the frame up one or COUNT_EXP stack levels from the
2316 previously selected frame, and print it briefly. */
2319 up_silently_base (const char *count_exp)
2321 struct frame_info *frame;
2325 count = parse_and_eval_long (count_exp);
2327 frame = find_relative_frame (get_selected_frame ("No stack."), &count);
2328 if (count != 0 && count_exp == NULL)
2329 error (_("Initial frame selected; you cannot go up."));
2330 select_frame (frame);
2334 up_silently_command (char *count_exp, int from_tty)
2336 up_silently_base (count_exp);
2340 up_command (char *count_exp, int from_tty)
2342 up_silently_base (count_exp);
2343 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
2346 /* Select the frame down one or COUNT_EXP stack levels from the previously
2347 selected frame, and print it briefly. */
2350 down_silently_base (const char *count_exp)
2352 struct frame_info *frame;
2356 count = -parse_and_eval_long (count_exp);
2358 frame = find_relative_frame (get_selected_frame ("No stack."), &count);
2359 if (count != 0 && count_exp == NULL)
2361 /* We only do this if COUNT_EXP is not specified. That way
2362 "down" means to really go down (and let me know if that is
2363 impossible), but "down 9999" can be used to mean go all the
2364 way down without getting an error. */
2366 error (_("Bottom (innermost) frame selected; you cannot go down."));
2369 select_frame (frame);
2373 down_silently_command (char *count_exp, int from_tty)
2375 down_silently_base (count_exp);
2379 down_command (char *count_exp, int from_tty)
2381 down_silently_base (count_exp);
2382 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
2387 return_command (char *retval_exp, int from_tty)
2389 /* Initialize it just to avoid a GCC false warning. */
2390 enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION;
2391 struct frame_info *thisframe;
2392 struct gdbarch *gdbarch;
2393 struct symbol *thisfun;
2394 struct value *return_value = NULL;
2395 struct value *function = NULL;
2396 const char *query_prefix = "";
2398 thisframe = get_selected_frame ("No selected frame.");
2399 thisfun = get_frame_function (thisframe);
2400 gdbarch = get_frame_arch (thisframe);
2402 if (get_frame_type (get_current_frame ()) == INLINE_FRAME)
2403 error (_("Can not force return from an inlined function."));
2405 /* Compute the return value. If the computation triggers an error,
2406 let it bail. If the return type can't be handled, set
2407 RETURN_VALUE to NULL, and QUERY_PREFIX to an informational
2411 struct expression *retval_expr = parse_expression (retval_exp);
2412 struct cleanup *old_chain = make_cleanup (xfree, retval_expr);
2413 struct type *return_type = NULL;
2415 /* Compute the return value. Should the computation fail, this
2416 call throws an error. */
2417 return_value = evaluate_expression (retval_expr);
2419 /* Cast return value to the return type of the function. Should
2420 the cast fail, this call throws an error. */
2421 if (thisfun != NULL)
2422 return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun));
2423 if (return_type == NULL)
2425 if (retval_expr->elts[0].opcode != UNOP_CAST
2426 && retval_expr->elts[0].opcode != UNOP_CAST_TYPE)
2427 error (_("Return value type not available for selected "
2429 "Please use an explicit cast of the value to return."));
2430 return_type = value_type (return_value);
2432 do_cleanups (old_chain);
2433 return_type = check_typedef (return_type);
2434 return_value = value_cast (return_type, return_value);
2436 /* Make sure the value is fully evaluated. It may live in the
2437 stack frame we're about to pop. */
2438 if (value_lazy (return_value))
2439 value_fetch_lazy (return_value);
2441 if (thisfun != NULL)
2442 function = read_var_value (thisfun, NULL, thisframe);
2444 rv_conv = RETURN_VALUE_REGISTER_CONVENTION;
2445 if (TYPE_CODE (return_type) == TYPE_CODE_VOID)
2446 /* If the return-type is "void", don't try to find the
2447 return-value's location. However, do still evaluate the
2448 return expression so that, even when the expression result
2449 is discarded, side effects such as "return i++" still
2451 return_value = NULL;
2452 else if (thisfun != NULL)
2454 rv_conv = struct_return_convention (gdbarch, function, return_type);
2455 if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION
2456 || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS)
2458 query_prefix = "The location at which to store the "
2459 "function's return value is unknown.\n"
2460 "If you continue, the return value "
2461 "that you specified will be ignored.\n";
2462 return_value = NULL;
2467 /* Does an interactive user really want to do this? Include
2468 information, such as how well GDB can handle the return value, in
2469 the query message. */
2474 if (thisfun == NULL)
2475 confirmed = query (_("%sMake selected stack frame return now? "),
2479 if (TYPE_NO_RETURN (thisfun->type))
2480 warning (_("Function does not return normally to caller."));
2481 confirmed = query (_("%sMake %s return now? "), query_prefix,
2482 SYMBOL_PRINT_NAME (thisfun));
2485 error (_("Not confirmed"));
2488 /* Discard the selected frame and all frames inner-to it. */
2489 frame_pop (get_selected_frame (NULL));
2491 /* Store RETURN_VALUE in the just-returned register set. */
2492 if (return_value != NULL)
2494 struct type *return_type = value_type (return_value);
2495 struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ());
2497 gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION
2498 && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS);
2499 gdbarch_return_value (gdbarch, function, return_type,
2500 get_current_regcache (), NULL /*read*/,
2501 value_contents (return_value) /*write*/);
2504 /* If we are at the end of a call dummy now, pop the dummy frame
2506 if (get_frame_type (get_current_frame ()) == DUMMY_FRAME)
2507 frame_pop (get_current_frame ());
2509 select_frame (get_current_frame ());
2510 /* If interactive, print the frame that is now current. */
2512 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
2515 /* Sets the scope to input function name, provided that the function
2516 is within the current stack frame. */
2518 struct function_bounds
2520 CORE_ADDR low, high;
2524 func_command (char *arg, int from_tty)
2526 struct frame_info *frame;
2528 struct symtabs_and_lines sals;
2531 struct function_bounds *func_bounds = NULL;
2532 struct cleanup *cleanups;
2537 frame = get_current_frame ();
2538 sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE);
2539 cleanups = make_cleanup (xfree, sals.sals);
2540 func_bounds = XNEWVEC (struct function_bounds, sals.nelts);
2541 make_cleanup (xfree, func_bounds);
2542 for (i = 0; (i < sals.nelts && !found); i++)
2544 if (sals.sals[i].pspace != current_program_space)
2545 func_bounds[i].low = func_bounds[i].high = 0;
2546 else if (sals.sals[i].pc == 0
2547 || find_pc_partial_function (sals.sals[i].pc, NULL,
2548 &func_bounds[i].low,
2549 &func_bounds[i].high) == 0)
2551 func_bounds[i].low = func_bounds[i].high = 0;
2557 for (i = 0; (i < sals.nelts && !found); i++)
2558 found = (get_frame_pc (frame) >= func_bounds[i].low
2559 && get_frame_pc (frame) < func_bounds[i].high);
2563 frame = find_relative_frame (frame, &level);
2566 while (!found && level == 0);
2568 do_cleanups (cleanups);
2571 printf_filtered (_("'%s' not within current stack frame.\n"), arg);
2572 else if (frame != get_selected_frame (NULL))
2573 select_and_print_frame (frame);
2577 /* Provide a prototype to silence -Wmissing-prototypes. */
2578 void _initialize_stack (void);
2581 _initialize_stack (void)
2583 add_com ("return", class_stack, return_command, _("\
2584 Make selected stack frame return to its caller.\n\
2585 Control remains in the debugger, but when you continue\n\
2586 execution will resume in the frame above the one now selected.\n\
2587 If an argument is given, it is an expression for the value to return."));
2589 add_com ("up", class_stack, up_command, _("\
2590 Select and print stack frame that called this one.\n\
2591 An argument says how many frames up to go."));
2592 add_com ("up-silently", class_support, up_silently_command, _("\
2593 Same as the `up' command, but does not print anything.\n\
2594 This is useful in command scripts."));
2596 add_com ("down", class_stack, down_command, _("\
2597 Select and print stack frame called by this one.\n\
2598 An argument says how many frames down to go."));
2599 add_com_alias ("do", "down", class_stack, 1);
2600 add_com_alias ("dow", "down", class_stack, 1);
2601 add_com ("down-silently", class_support, down_silently_command, _("\
2602 Same as the `down' command, but does not print anything.\n\
2603 This is useful in command scripts."));
2605 add_com ("frame", class_stack, frame_command, _("\
2606 Select and print a stack frame.\nWith no argument, \
2607 print the selected stack frame. (See also \"info frame\").\n\
2608 An argument specifies the frame to select.\n\
2609 It can be a stack frame number or the address of the frame.\n\
2610 With argument, nothing is printed if input is coming from\n\
2611 a command file or a user-defined command."));
2613 add_com_alias ("f", "frame", class_stack, 1);
2615 add_com ("select-frame", class_stack, select_frame_command, _("\
2616 Select a stack frame without printing anything.\n\
2617 An argument specifies the frame to select.\n\
2618 It can be a stack frame number or the address of the frame.\n"));
2620 add_com ("backtrace", class_stack, backtrace_command, _("\
2621 Print backtrace of all stack frames, or innermost COUNT frames.\n\
2622 With a negative argument, print outermost -COUNT frames.\nUse of the \
2623 'full' qualifier also prints the values of the local variables.\n\
2624 Use of the 'no-filters' qualifier prohibits frame filters from executing\n\
2625 on this backtrace.\n"));
2626 add_com_alias ("bt", "backtrace", class_stack, 0);
2628 add_com_alias ("where", "backtrace", class_alias, 0);
2629 add_info ("stack", backtrace_command,
2630 _("Backtrace of the stack, or innermost COUNT frames."));
2631 add_info_alias ("s", "stack", 1);
2632 add_info ("frame", frame_info,
2633 _("All about selected stack frame, or frame at ADDR."));
2634 add_info_alias ("f", "frame", 1);
2635 add_info ("locals", locals_info,
2636 _("Local variables of current stack frame."));
2637 add_info ("args", args_info,
2638 _("Argument variables of current stack frame."));
2641 add_com ("func", class_stack, func_command, _("\
2642 Select the stack frame that contains <func>.\n\
2643 Usage: func <name>\n"));
2645 add_setshow_enum_cmd ("frame-arguments", class_stack,
2646 print_frame_arguments_choices, &print_frame_arguments,
2647 _("Set printing of non-scalar frame arguments"),
2648 _("Show printing of non-scalar frame arguments"),
2649 NULL, NULL, NULL, &setprintlist, &showprintlist);
2651 add_setshow_boolean_cmd ("frame-arguments", no_class,
2652 &print_raw_frame_arguments, _("\
2653 Set whether to print frame arguments in raw form."), _("\
2654 Show whether to print frame arguments in raw form."), _("\
2655 If set, frame arguments are printed in raw form, bypassing any\n\
2656 pretty-printers for that value."),
2658 &setprintrawlist, &showprintrawlist);
2660 add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack,
2661 &disassemble_next_line, _("\
2662 Set whether to disassemble next source line or insn when execution stops."),
2664 Show whether to disassemble next source line or insn when execution stops."),
2666 If ON, GDB will display disassembly of the next source line, in addition\n\
2667 to displaying the source line itself. If the next source line cannot\n\
2668 be displayed (e.g., source is unavailable or there's no line info), GDB\n\
2669 will display disassembly of next instruction instead of showing the\n\
2671 If AUTO, display disassembly of next instruction only if the source line\n\
2672 cannot be displayed.\n\
2673 If OFF (which is the default), never display the disassembly of the next\n\
2676 show_disassemble_next_line,
2677 &setlist, &showlist);
2678 disassemble_next_line = AUTO_BOOLEAN_FALSE;
2680 add_setshow_enum_cmd ("entry-values", class_stack,
2681 print_entry_values_choices, &print_entry_values,
2682 _("Set printing of function arguments at function "
2684 _("Show printing of function arguments at function "
2687 GDB can sometimes determine the values of function arguments at entry,\n\
2688 in addition to their current values. This option tells GDB whether\n\
2689 to print the current value, the value at entry (marked as val@entry),\n\
2690 or both. Note that one or both of these values may be <optimized out>."),
2691 NULL, NULL, &setprintlist, &showprintlist);