1 /* General GDB/Guile code.
3 Copyright (C) 2014-2021 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/>. */
20 /* See README file in this directory for implementation notes, coding
21 conventions, et.al. */
24 #include "breakpoint.h"
25 #include "cli/cli-cmds.h"
26 #include "cli/cli-script.h"
27 #include "cli/cli-utils.h"
31 #include "extension-priv.h"
33 #include "gdbsupport/version.h"
36 #include "guile-internal.h"
39 #include "gdbsupport/block-signals.h"
41 /* The Guile version we're using.
42 We *could* use the macros in libguile/version.h but that would preclude
43 handling the user switching in a different version with, e.g.,
44 LD_LIBRARY_PATH (using a different version than what gdb was compiled with
45 is not something to be done lightly, but can be useful). */
46 int gdbscm_guile_major_version
;
47 int gdbscm_guile_minor_version
;
48 int gdbscm_guile_micro_version
;
51 /* The guile subdirectory within gdb's data-directory. */
52 static const char *guile_datadir
;
55 /* Declared constants and enum for guile exception printing. */
56 const char gdbscm_print_excp_none
[] = "none";
57 const char gdbscm_print_excp_full
[] = "full";
58 const char gdbscm_print_excp_message
[] = "message";
60 /* "set guile print-stack" choices. */
61 static const char *const guile_print_excp_enums
[] =
63 gdbscm_print_excp_none
,
64 gdbscm_print_excp_full
,
65 gdbscm_print_excp_message
,
69 /* The exception printing variable. 'full' if we want to print the
70 error message and stack, 'none' if we want to print nothing, and
71 'message' if we only want to print the error message. 'message' is
73 const char *gdbscm_print_excp
= gdbscm_print_excp_message
;
78 static void gdbscm_initialize (const struct extension_language_defn
*);
79 static int gdbscm_initialized (const struct extension_language_defn
*);
80 static void gdbscm_eval_from_control_command
81 (const struct extension_language_defn
*, struct command_line
*);
82 static script_sourcer_func gdbscm_source_script
;
83 static void gdbscm_set_backtrace (int enable
);
85 int gdb_scheme_initialized
;
87 /* Symbol for setting documentation strings. */
88 SCM gdbscm_documentation_symbol
;
90 /* Keywords used by various functions. */
91 static SCM from_tty_keyword
;
92 static SCM to_string_keyword
;
94 /* The name of the various modules (without the surrounding parens). */
95 const char gdbscm_module_name
[] = "gdb";
96 const char gdbscm_init_module_name
[] = "gdb";
98 /* The name of the bootstrap file. */
99 static const char boot_scm_filename
[] = "boot.scm";
101 /* The interface between gdb proper and loading of python scripts. */
103 static const struct extension_language_script_ops guile_extension_script_ops
=
105 gdbscm_source_script
,
106 gdbscm_source_objfile_script
,
107 gdbscm_execute_objfile_script
,
108 gdbscm_auto_load_enabled
111 /* The interface between gdb proper and guile scripting. */
113 static const struct extension_language_ops guile_extension_ops
=
118 gdbscm_eval_from_control_command
,
120 NULL
, /* gdbscm_start_type_printers, */
121 NULL
, /* gdbscm_apply_type_printers, */
122 NULL
, /* gdbscm_free_type_printers, */
124 gdbscm_apply_val_pretty_printer
,
126 NULL
, /* gdbscm_apply_frame_filter, */
128 gdbscm_preserve_values
,
130 gdbscm_breakpoint_has_cond
,
131 gdbscm_breakpoint_cond_says_stop
,
133 NULL
, /* gdbscm_check_quit_flag, */
134 NULL
, /* gdbscm_set_quit_flag, */
138 /* The main struct describing GDB's interface to the Guile
139 extension language. */
140 extern const struct extension_language_defn extension_language_guile
=
152 &guile_extension_script_ops
,
161 /* Implementation of the gdb "guile-repl" command. */
164 guile_repl_command (const char *arg
, int from_tty
)
166 scoped_restore restore_async
= make_scoped_restore (¤t_ui
->async
, 0);
168 arg
= skip_spaces (arg
);
170 /* This explicitly rejects any arguments for now.
171 "It is easier to relax a restriction than impose one after the fact."
172 We would *like* to be able to pass arguments to the interactive shell
173 but that's not what python-interactive does. Until there is time to
174 sort it out, we forbid arguments. */
177 error (_("guile-repl currently does not take any arguments."));
181 gdbscm_enter_repl ();
185 /* Implementation of the gdb "guile" command.
186 Note: Contrary to the Python version this displays the result.
187 Have to see which is better.
189 TODO: Add the result to Guile's history? */
192 guile_command (const char *arg
, int from_tty
)
194 scoped_restore restore_async
= make_scoped_restore (¤t_ui
->async
, 0);
196 arg
= skip_spaces (arg
);
200 gdb::unique_xmalloc_ptr
<char> msg
= gdbscm_safe_eval_string (arg
, 1);
203 error ("%s", msg
.get ());
207 counted_command_line l
= get_command_line (guile_control
, "");
209 execute_control_command_untraced (l
.get ());
213 /* Given a command_line, return a command string suitable for passing
214 to Guile. Lines in the string are separated by newlines. The return
215 value is allocated using xmalloc and the caller is responsible for
219 compute_scheme_string (struct command_line
*l
)
221 struct command_line
*iter
;
226 for (iter
= l
; iter
; iter
= iter
->next
)
227 size
+= strlen (iter
->line
) + 1;
229 script
= (char *) xmalloc (size
+ 1);
231 for (iter
= l
; iter
; iter
= iter
->next
)
233 int len
= strlen (iter
->line
);
235 strcpy (&script
[here
], iter
->line
);
237 script
[here
++] = '\n';
243 /* Take a command line structure representing a "guile" command, and
244 evaluate its body using the Guile interpreter.
245 This is the extension_language_ops.eval_from_control_command "method". */
248 gdbscm_eval_from_control_command
249 (const struct extension_language_defn
*extlang
, struct command_line
*cmd
)
253 if (cmd
->body_list_1
!= nullptr)
254 error (_("Invalid \"guile\" block structure."));
256 script
= compute_scheme_string (cmd
->body_list_0
.get ());
257 gdb::unique_xmalloc_ptr
<char> msg
= gdbscm_safe_eval_string (script
, 0);
260 error ("%s", msg
.get ());
263 /* Read a file as Scheme code.
264 This is the extension_language_script_ops.script_sourcer "method".
265 FILE is the file to run. FILENAME is name of the file FILE.
266 This does not throw any errors. If an exception occurs an error message
270 gdbscm_source_script (const struct extension_language_defn
*extlang
,
271 FILE *file
, const char *filename
)
273 gdb::unique_xmalloc_ptr
<char> msg
= gdbscm_safe_source_script (filename
);
276 fprintf_filtered (gdb_stderr
, "%s\n", msg
.get ());
279 /* (execute string [#:from-tty boolean] [#:to-string boolean])
280 A Scheme function which evaluates a string using the gdb CLI. */
283 gdbscm_execute_gdb_command (SCM command_scm
, SCM rest
)
285 int from_tty_arg_pos
= -1, to_string_arg_pos
= -1;
286 int from_tty
= 0, to_string
= 0;
287 const SCM keywords
[] = { from_tty_keyword
, to_string_keyword
, SCM_BOOL_F
};
290 gdbscm_parse_function_args (FUNC_NAME
, SCM_ARG1
, keywords
, "s#tt",
291 command_scm
, &command
, rest
,
292 &from_tty_arg_pos
, &from_tty
,
293 &to_string_arg_pos
, &to_string
);
295 return gdbscm_wrap ([=]
297 gdb::unique_xmalloc_ptr
<char> command_holder (command
);
298 std::string to_string_res
;
300 scoped_restore restore_async
= make_scoped_restore (¤t_ui
->async
,
303 scoped_restore preventer
= prevent_dont_repeat ();
305 to_string_res
= execute_command_to_string (command
, from_tty
, false);
307 execute_command (command
, from_tty
);
309 /* Do any commands attached to breakpoint we stopped at. */
310 bpstat_do_actions ();
313 return gdbscm_scm_from_c_string (to_string_res
.c_str ());
314 return SCM_UNSPECIFIED
;
318 /* (data-directory) -> string */
321 gdbscm_data_directory (void)
323 return gdbscm_scm_from_c_string (gdb_datadir
.c_str ());
326 /* (guile-data-directory) -> string */
329 gdbscm_guile_data_directory (void)
331 return gdbscm_scm_from_c_string (guile_datadir
);
334 /* (gdb-version) -> string */
337 gdbscm_gdb_version (void)
339 return gdbscm_scm_from_c_string (version
);
342 /* (host-config) -> string */
345 gdbscm_host_config (void)
347 return gdbscm_scm_from_c_string (host_name
);
350 /* (target-config) -> string */
353 gdbscm_target_config (void)
355 return gdbscm_scm_from_c_string (target_name
);
358 #else /* ! HAVE_GUILE */
360 /* Dummy implementation of the gdb "guile-repl" and "guile"
364 guile_repl_command (const char *arg
, int from_tty
)
366 arg
= skip_spaces (arg
);
368 error (_("guile-repl currently does not take any arguments."));
369 error (_("Guile scripting is not supported in this copy of GDB."));
373 guile_command (const char *arg
, int from_tty
)
375 arg
= skip_spaces (arg
);
377 error (_("Guile scripting is not supported in this copy of GDB."));
380 /* Even if Guile isn't enabled, we still have to slurp the
381 command list to the corresponding "end". */
382 counted_command_line l
= get_command_line (guile_control
, "");
384 execute_control_command_untraced (l
.get ());
388 #endif /* ! HAVE_GUILE */
390 /* Lists for 'set,show,info guile' commands. */
392 static struct cmd_list_element
*set_guile_list
;
393 static struct cmd_list_element
*show_guile_list
;
394 static struct cmd_list_element
*info_guile_list
;
397 /* Initialization. */
401 static const scheme_function misc_guile_functions
[] =
403 { "execute", 1, 0, 1, as_a_scm_t_subr (gdbscm_execute_gdb_command
),
405 Execute the given GDB command.\n\
407 Arguments: string [#:to-string boolean] [#:from-tty boolean]\n\
408 If #:from-tty is true then the command executes as if entered\n\
409 from the keyboard. The default is false (#f).\n\
410 If #:to-string is true then the result is returned as a string.\n\
411 Otherwise output is sent to the current output port,\n\
412 which is the default.\n\
413 Returns: The result of the command if #:to-string is true.\n\
414 Otherwise returns unspecified." },
416 { "data-directory", 0, 0, 0, as_a_scm_t_subr (gdbscm_data_directory
),
418 Return the name of GDB's data directory." },
420 { "guile-data-directory", 0, 0, 0,
421 as_a_scm_t_subr (gdbscm_guile_data_directory
),
423 Return the name of the Guile directory within GDB's data directory." },
425 { "gdb-version", 0, 0, 0, as_a_scm_t_subr (gdbscm_gdb_version
),
427 Return GDB's version string." },
429 { "host-config", 0, 0, 0, as_a_scm_t_subr (gdbscm_host_config
),
431 Return the name of the host configuration." },
433 { "target-config", 0, 0, 0, as_a_scm_t_subr (gdbscm_target_config
),
435 Return the name of the target configuration." },
440 /* Load BOOT_SCM_FILE, the first Scheme file that gets loaded. */
443 boot_guile_support (void *boot_scm_file
)
445 /* Load boot.scm without compiling it (there's no need to compile it).
446 The other files should have been compiled already, and boot.scm is
447 expected to adjust '%load-compiled-path' accordingly. If they haven't
448 been compiled, Guile will auto-compile them. The important thing to keep
449 in mind is that there's a >= 100x speed difference between compiled and
450 non-compiled files. */
451 return scm_c_primitive_load ((const char *) boot_scm_file
);
454 /* Return non-zero if ARGS has the "standard" format for throw args.
455 The standard format is:
456 (function format-string (format-string-args-list) ...).
457 FUNCTION is #f if no function was recorded. */
460 standard_throw_args_p (SCM args
)
462 if (gdbscm_is_true (scm_list_p (args
))
463 && scm_ilength (args
) >= 3)
465 /* The function in which the error occurred. */
466 SCM arg0
= scm_list_ref (args
, scm_from_int (0));
467 /* The format string. */
468 SCM arg1
= scm_list_ref (args
, scm_from_int (1));
469 /* The arguments of the format string. */
470 SCM arg2
= scm_list_ref (args
, scm_from_int (2));
472 if ((scm_is_string (arg0
) || gdbscm_is_false (arg0
))
473 && scm_is_string (arg1
)
474 && gdbscm_is_true (scm_list_p (arg2
)))
481 /* Print the error recorded in a "standard" throw args. */
484 print_standard_throw_error (SCM args
)
486 /* The function in which the error occurred. */
487 SCM arg0
= scm_list_ref (args
, scm_from_int (0));
488 /* The format string. */
489 SCM arg1
= scm_list_ref (args
, scm_from_int (1));
490 /* The arguments of the format string. */
491 SCM arg2
= scm_list_ref (args
, scm_from_int (2));
493 /* ARG0 is #f if no function was recorded. */
494 if (gdbscm_is_true (arg0
))
496 scm_simple_format (scm_current_error_port (),
497 scm_from_latin1_string (_("Error in function ~s:~%")),
500 scm_simple_format (scm_current_error_port (), arg1
, arg2
);
503 /* Print the error message recorded in KEY, ARGS, the arguments to throw.
504 Normally we let Scheme print the error message.
505 This function is used when Scheme initialization fails.
506 We can still use the Scheme C API though. */
509 print_throw_error (SCM key
, SCM args
)
511 /* IWBN to call gdbscm_print_exception_with_stack here, but Guile didn't
512 boot successfully so play it safe and avoid it. The "format string" and
513 its args are embedded in ARGS, but the content of ARGS depends on KEY.
514 Make sure ARGS has the expected canonical content before trying to use
516 if (standard_throw_args_p (args
))
517 print_standard_throw_error (args
);
520 scm_simple_format (scm_current_error_port (),
521 scm_from_latin1_string (_("Throw to key `~a' with args `~s'.~%")),
522 scm_list_2 (key
, args
));
526 /* Handle an exception thrown while loading BOOT_SCM_FILE. */
529 handle_boot_error (void *boot_scm_file
, SCM key
, SCM args
)
531 fprintf_unfiltered (gdb_stderr
, ("Exception caught while booting Guile.\n"));
533 print_throw_error (key
, args
);
535 fprintf_unfiltered (gdb_stderr
, "\n");
536 warning (_("Could not complete Guile gdb module initialization from:\n"
538 "Limited Guile support is available.\n"
539 "Suggest passing --data-directory=/path/to/gdb/data-directory."),
540 (const char *) boot_scm_file
);
542 return SCM_UNSPECIFIED
;
545 /* Load gdb/boot.scm, the Scheme side of GDB/Guile support.
546 Note: This function assumes it's called within the gdb module. */
549 initialize_scheme_side (void)
553 guile_datadir
= concat (gdb_datadir
.c_str (), SLASH_STRING
, "guile",
555 boot_scm_path
= concat (guile_datadir
, SLASH_STRING
, "gdb",
556 SLASH_STRING
, boot_scm_filename
, (char *) NULL
);
558 scm_c_catch (SCM_BOOL_T
, boot_guile_support
, boot_scm_path
,
559 handle_boot_error
, boot_scm_path
, NULL
, NULL
);
561 xfree (boot_scm_path
);
564 /* Install the gdb scheme module.
565 The result is a boolean indicating success.
566 If initializing the gdb module fails an error message is printed.
567 Note: This function runs in the context of the gdb module. */
570 initialize_gdb_module (void *data
)
572 /* Computing these is a pain, so only do it once.
573 Also, do it here and save the result so that obtaining the values
575 gdbscm_guile_major_version
= gdbscm_scm_string_to_int (scm_major_version ());
576 gdbscm_guile_minor_version
= gdbscm_scm_string_to_int (scm_minor_version ());
577 gdbscm_guile_micro_version
= gdbscm_scm_string_to_int (scm_micro_version ());
579 /* The documentation symbol needs to be defined before any calls to
580 gdbscm_define_{variables,functions}. */
581 gdbscm_documentation_symbol
= scm_from_latin1_symbol ("documentation");
583 /* The smob and exception support must be initialized early. */
584 gdbscm_initialize_smobs ();
585 gdbscm_initialize_exceptions ();
587 /* The rest are initialized in alphabetical order. */
588 gdbscm_initialize_arches ();
589 gdbscm_initialize_auto_load ();
590 gdbscm_initialize_blocks ();
591 gdbscm_initialize_breakpoints ();
592 gdbscm_initialize_commands ();
593 gdbscm_initialize_disasm ();
594 gdbscm_initialize_frames ();
595 gdbscm_initialize_iterators ();
596 gdbscm_initialize_lazy_strings ();
597 gdbscm_initialize_math ();
598 gdbscm_initialize_objfiles ();
599 gdbscm_initialize_parameters ();
600 gdbscm_initialize_ports ();
601 gdbscm_initialize_pretty_printers ();
602 gdbscm_initialize_pspaces ();
603 gdbscm_initialize_strings ();
604 gdbscm_initialize_symbols ();
605 gdbscm_initialize_symtabs ();
606 gdbscm_initialize_types ();
607 gdbscm_initialize_values ();
609 gdbscm_define_functions (misc_guile_functions
, 1);
611 from_tty_keyword
= scm_from_latin1_keyword ("from-tty");
612 to_string_keyword
= scm_from_latin1_keyword ("to-string");
614 initialize_scheme_side ();
616 gdb_scheme_initialized
= 1;
619 /* Utility to call scm_c_define_module+initialize_gdb_module from
620 within scm_with_guile. */
623 call_initialize_gdb_module (void *data
)
625 /* Most of the initialization is done by initialize_gdb_module.
626 It is called via scm_c_define_module so that the initialization is
627 performed within the desired module. */
628 scm_c_define_module (gdbscm_module_name
, initialize_gdb_module
, NULL
);
630 #if HAVE_GUILE_MANUAL_FINALIZATION
631 scm_run_finalizers ();
637 /* A callback to initialize Guile after gdb has finished all its
638 initialization. This is the extension_language_ops.initialize "method". */
641 gdbscm_initialize (const struct extension_language_defn
*extlang
)
644 /* The Python support puts the C side in module "_gdb", leaving the
645 Python side to define module "gdb" which imports "_gdb". There is
646 evidently no similar convention in Guile so we skip this. */
648 #if HAVE_GUILE_MANUAL_FINALIZATION
649 /* Our SMOB free functions are not thread-safe, as GDB itself is not
650 intended to be thread-safe. Disable automatic finalization so that
651 finalizers aren't run in other threads. */
652 scm_set_automatic_finalization_enabled (0);
655 /* Before we initialize Guile, block signals needed by gdb (especially
656 SIGCHLD). This is done so that all threads created during Guile
657 initialization have SIGCHLD blocked. PR 17247. Really libgc and
658 Guile should do this, but we need to work with libgc 7.4.x. */
660 gdb::block_signals blocker
;
662 /* There are libguile versions (f.i. v3.0.5) that by default call
663 mp_get_memory_functions during initialization to install custom
664 libgmp memory functions. This is considered a bug and should be
665 fixed starting v3.0.6.
666 Before gdb commit 880ae75a2b7 "gdb delay guile initialization until
667 gdbscm_finish_initialization", that bug had no effect for gdb,
668 because gdb subsequently called mp_get_memory_functions to install
669 its own custom functions in _initialize_gmp_utils. However, since
670 aforementioned gdb commit the initialization order is reversed,
671 allowing libguile to install a custom malloc that is incompatible
672 with the custom free as used in gmp-utils.c, resulting in a
673 "double free or corruption (out)" error.
674 Work around the libguile bug by disabling the installation of the
675 libgmp memory functions by guile initialization. */
676 scm_install_gmp_memory_functions
= 0;
678 /* scm_with_guile is the most portable way to initialize Guile. Plus
679 we need to initialize the Guile support while in Guile mode (e.g.,
680 called from within a call to scm_with_guile). */
681 scm_with_guile (call_initialize_gdb_module
, NULL
);
684 /* Set Guile's backtrace to match the "set guile print-stack" default.
685 [N.B. The two settings are still separate.] But only do this after
686 we've initialized Guile, it's nice to see a backtrace if there's an
687 error during initialization. OTOH, if the error is that gdb/init.scm
688 wasn't found because gdb is being run from the build tree, the
689 backtrace is more noise than signal. Sigh. */
690 gdbscm_set_backtrace (0);
693 /* Restore the environment to the user interaction one. */
694 scm_set_current_module (scm_interaction_environment ());
697 /* The extension_language_ops.initialized "method". */
700 gdbscm_initialized (const struct extension_language_defn
*extlang
)
702 return gdb_scheme_initialized
;
705 /* Enable or disable Guile backtraces. */
708 gdbscm_set_backtrace (int enable
)
710 static const char disable_bt
[] = "(debug-disable 'backtrace)";
711 static const char enable_bt
[] = "(debug-enable 'backtrace)";
714 gdbscm_safe_eval_string (enable_bt
, 0);
716 gdbscm_safe_eval_string (disable_bt
, 0);
719 #endif /* HAVE_GUILE */
722 cmd_list_element
*guile_cmd_element
= nullptr;
724 /* Install the various gdb commands used by Guile. */
727 install_gdb_commands (void)
729 cmd_list_element
*guile_repl_cmd
730 = add_com ("guile-repl", class_obscure
, guile_repl_command
,
733 Start an interactive Guile prompt.\n\
735 To return to GDB, type the EOF character (e.g., Ctrl-D on an empty\n\
737 #else /* HAVE_GUILE */
739 Start a Guile interactive prompt.\n\
741 Guile scripting is not supported in this copy of GDB.\n\
742 This command is only a placeholder.")
743 #endif /* HAVE_GUILE */
745 add_com_alias ("gr", guile_repl_cmd
, class_obscure
, 1);
747 /* Since "help guile" is easy to type, and intuitive, we add general help
748 in using GDB+Guile to this command. */
749 guile_cmd_element
= add_com ("guile", class_obscure
, guile_command
,
752 Evaluate one or more Guile expressions.\n\
754 The expression(s) can be given as an argument, for instance:\n\
756 guile (display 23)\n\
758 The result of evaluating the last expression is printed.\n\
760 If no argument is given, the following lines are read and passed\n\
761 to Guile for evaluation. Type a line containing \"end\" to indicate\n\
762 the end of the set of expressions.\n\
764 The Guile GDB module must first be imported before it can be used.\n\
766 (gdb) guile (use-modules (gdb))\n\
767 or if you want to import the (gdb) module with a prefix, use:\n\
768 (gdb) guile (use-modules ((gdb) #:renamer (symbol-prefix-proc 'gdb:)))\n\
770 The Guile interactive session, started with the \"guile-repl\"\n\
771 command, provides extensive help and apropos capabilities.\n\
772 Type \",help\" once in a Guile interactive session.")
773 #else /* HAVE_GUILE */
775 Evaluate a Guile expression.\n\
777 Guile scripting is not supported in this copy of GDB.\n\
778 This command is only a placeholder.")
779 #endif /* HAVE_GUILE */
781 add_com_alias ("gu", guile_cmd_element
, class_obscure
, 1);
783 cmd_list_element
*set_guile_cmd
784 = add_basic_prefix_cmd ("guile", class_obscure
,
785 _("Prefix command for Guile preference settings."),
786 &set_guile_list
, 0, &setlist
);
787 add_alias_cmd ("gu", set_guile_cmd
, class_obscure
, 1, &setlist
);
789 cmd_list_element
*show_guile_cmd
790 = add_show_prefix_cmd ("guile", class_obscure
,
791 _("Prefix command for Guile preference settings."),
792 &show_guile_list
, 0, &showlist
);
793 add_alias_cmd ("gu", show_guile_cmd
, class_obscure
, 1, &showlist
);
795 cmd_list_element
*info_guile_cmd
796 = add_basic_prefix_cmd ("guile", class_obscure
,
797 _("Prefix command for Guile info displays."),
798 &info_guile_list
, 0, &infolist
);
799 add_info_alias ("gu", info_guile_cmd
, 1);
801 /* The name "print-stack" is carried over from Python.
802 A better name is "print-exception". */
803 add_setshow_enum_cmd ("print-stack", no_class
, guile_print_excp_enums
,
804 &gdbscm_print_excp
, _("\
805 Set mode for Guile exception printing on error."), _("\
806 Show the mode of Guile exception printing on error."), _("\
807 none == no stack or message will be printed.\n\
808 full == a message and a stack will be printed.\n\
809 message == an error message without a stack will be printed."),
811 &set_guile_list
, &show_guile_list
);
814 void _initialize_guile ();
818 install_gdb_commands ();