/* Top level stuff for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "gdbcmd.h"
#include "serial.h"
#include "doublest.h"
#include "gdb_assert.h"
+#include "main.h"
+#include "event-loop.h"
/* readline include files */
#include "readline/readline.h"
/* Initialization file name for gdb. This is overridden in some configs. */
+#ifndef PATH_MAX
+# ifdef FILENAME_MAX
+# define PATH_MAX FILENAME_MAX
+# else
+# define PATH_MAX 512
+# endif
+#endif
+
#ifndef GDBINIT_FILENAME
#define GDBINIT_FILENAME ".gdbinit"
#endif
-char gdbinit[] = GDBINIT_FILENAME;
+char gdbinit[PATH_MAX + 1] = GDBINIT_FILENAME;
int inhibit_gdbinit = 0;
/* Flag for whether we want all the "from_tty" gubbish printed. */
int caution = 1; /* Default is yes, sigh. */
+static void
+show_caution (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Whether to confirm potentially dangerous operations is %s.\n"),
+ value);
+}
/* stdio stream that command input is being read from. Set to stdin normally.
Set by source_command to the file we are sourcing. Set to NULL if we are
FILE *instream;
+/* Flag to indicate whether a user defined command is currently running. */
+
+int in_user_command;
+
/* Current working directory. */
char *current_directory;
target is off and running, which gdb is doing something else. */
int target_executing = 0;
-/* Level of control structure. */
-static int control_level;
-
/* Sbrk location on entry to main. Used for statistics only. */
#ifdef HAVE_SBRK
char *lim_at_start;
char *arg;
line = p;
+ /* If trace-commands is set then this will print this command. */
+ print_command_trace (p);
+
c = lookup_cmd (&p, cmdlist, "", 0, 1);
/* If the target is running, we allow only a limited set of
substitution. These variables are given default values at the end
of this file. */
static int command_editing_p;
+
/* NOTE 1999-04-29: This variable will be static again, once we modify
gdb to use the event loop as the default command loop and we merge
event-top.c into this file, top.c */
+
/* static */ int history_expansion_p;
+
static int write_history_p;
+static void
+show_write_history_p (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"),
+ value);
+}
+
static int history_size;
+static void
+show_history_size (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("The size of the command history is %s.\n"),
+ value);
+}
+
static char *history_filename;
+static void
+show_history_filename (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+The filename in which to record the command history is \"%s\".\n"),
+ value);
+}
/* This is like readline(), but it has some gdb-specific behavior.
- gdb can use readline in both the synchronous and async modes during
+ gdb may want readline in both the synchronous and async modes during
a single gdb invocation. At the ordinary top-level prompt we might
be using the async readline. That means we can't use
rl_pre_input_hook, since it doesn't work properly in async mode.
However, for a secondary prompt (" >", such as occurs during a
- `define'), gdb just calls readline() directly, running it in
- synchronous mode. So for operate-and-get-next to work in this
- situation, we have to switch the hooks around. That is what
- gdb_readline_wrapper is for. */
+ `define'), gdb wants a synchronous response.
+
+ We used to call readline() directly, running it in synchronous
+ mode. But mixing modes this way is not supported, and as of
+ readline 5.x it no longer works; the arrow keys come unbound during
+ the synchronous call. So we make a nested call into the event
+ loop. That's what gdb_readline_wrapper is for. */
+
+/* A flag set as soon as gdb_readline_wrapper_line is called; we can't
+ rely on gdb_readline_wrapper_result, which might still be NULL if
+ the user types Control-D for EOF. */
+static int gdb_readline_wrapper_done;
+
+/* The result of the current call to gdb_readline_wrapper, once a newline
+ is seen. */
+static char *gdb_readline_wrapper_result;
+
+/* Any intercepted hook. Operate-and-get-next sets this, expecting it
+ to be called after the newline is processed (which will redisplay
+ the prompt). But in gdb_readline_wrapper we will not get a new
+ prompt until the next call, or until we return to the event loop.
+ So we disable this hook around the newline and restore it before we
+ return. */
+static void (*saved_after_char_processing_hook) (void);
+
+/* This function is called when readline has seen a complete line of
+ text. */
+
+static void
+gdb_readline_wrapper_line (char *line)
+{
+ gdb_assert (!gdb_readline_wrapper_done);
+ gdb_readline_wrapper_result = line;
+ gdb_readline_wrapper_done = 1;
+
+ /* Prevent operate-and-get-next from acting too early. */
+ saved_after_char_processing_hook = after_char_processing_hook;
+ after_char_processing_hook = NULL;
+}
+
+struct gdb_readline_wrapper_cleanup
+ {
+ void (*handler_orig) (char *);
+ char *prompt_orig;
+ int already_prompted_orig;
+ };
+
+static void
+gdb_readline_wrapper_cleanup (void *arg)
+{
+ struct gdb_readline_wrapper_cleanup *cleanup = arg;
+
+ gdb_assert (rl_already_prompted == 1);
+ rl_already_prompted = cleanup->already_prompted_orig;
+ PROMPT (0) = cleanup->prompt_orig;
+
+ gdb_assert (input_handler == gdb_readline_wrapper_line);
+ input_handler = cleanup->handler_orig;
+ gdb_readline_wrapper_result = NULL;
+ gdb_readline_wrapper_done = 0;
+
+ after_char_processing_hook = saved_after_char_processing_hook;
+ saved_after_char_processing_hook = NULL;
+
+ xfree (cleanup);
+}
+
char *
gdb_readline_wrapper (char *prompt)
{
- /* Set the hook that works in this case. */
+ struct cleanup *back_to;
+ struct gdb_readline_wrapper_cleanup *cleanup;
+ char *retval;
+
+ cleanup = xmalloc (sizeof (*cleanup));
+ cleanup->handler_orig = input_handler;
+ input_handler = gdb_readline_wrapper_line;
+
+ cleanup->prompt_orig = get_prompt ();
+ PROMPT (0) = prompt;
+ cleanup->already_prompted_orig = rl_already_prompted;
+
+ back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
+
+ /* Display our prompt and prevent double prompt display. */
+ display_gdb_prompt (NULL);
+ rl_already_prompted = 1;
+
if (after_char_processing_hook)
- {
- rl_pre_input_hook = (Function *) after_char_processing_hook;
- after_char_processing_hook = NULL;
- }
+ (*after_char_processing_hook) ();
+ gdb_assert (after_char_processing_hook == NULL);
- return readline (prompt);
+ /* gdb_do_one_event argument is unused. */
+ while (gdb_do_one_event (NULL) >= 0)
+ if (gdb_readline_wrapper_done)
+ break;
+
+ retval = gdb_readline_wrapper_result;
+ do_cleanups (back_to);
+ return retval;
}
\f
}
/* Don't use fancy stuff if not talking to stdin. */
- if (deprecated_readline_hook && instream == NULL)
+ if (deprecated_readline_hook && input_from_terminal_p ())
{
rl = (*deprecated_readline_hook) (local_prompt);
}
- else if (command_editing_p && instream == stdin && ISATTY (instream))
+ else if (command_editing_p && input_from_terminal_p ())
{
rl = gdb_readline_wrapper (local_prompt);
}
/* Second line is a copyright notice. */
- fprintf_filtered (stream, "Copyright 2004 Free Software Foundation, Inc.\n");
+ fprintf_filtered (stream, "Copyright (C) 2007 Free Software Foundation, Inc.\n");
/* Following the copyright is a brief statement that the program is
free software, that users are free to copy and change it on
exit_code = (int) value_as_long (val);
}
+ else if (return_child_result)
+ exit_code = return_child_result_value;
qt.args = args;
qt.from_tty = from_tty;
exit (exit_code);
}
-/* Returns whether GDB is running on a terminal and whether the user
- desires that questions be asked of them on that terminal. */
+/* Returns whether GDB is running on a terminal and input is
+ currently coming from that terminal. */
int
input_from_terminal_p (void)
{
- return gdb_has_a_terminal () && (instream == stdin) & caution;
+ if (gdb_has_a_terminal () && instream == stdin)
+ return 1;
+
+ /* If INSTREAM is unset, and we are not in a user command, we
+ must be in Insight. That's like having a terminal, for our
+ purposes. */
+ if (instream == NULL && !in_user_command)
+ return 1;
+
+ return 0;
}
\f
static void
that was read. */
#ifdef __MSDOS__
/* No leading dots in file names are allowed on MSDOS. */
- history_filename = concat (current_directory, "/_gdb_history", NULL);
+ history_filename = concat (current_directory, "/_gdb_history",
+ (char *)NULL);
#else
- history_filename = concat (current_directory, "/.gdb_history", NULL);
+ history_filename = concat (current_directory, "/.gdb_history",
+ (char *)NULL);
#endif
}
read_history (history_filename);
}
+static void
+show_new_async_prompt (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value);
+}
+
+static void
+show_async_command_editing_p (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Editing of command lines as they are typed is %s.\n"),
+ value);
+}
+
+static void
+show_annotation_level (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Annotation_level is %s.\n"), value);
+}
+
+static void
+show_exec_done_display_p (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Notification of completion for asynchronous execution commands is %s.\n"),
+ value);
+}
static void
init_main (void)
{
15 is Control-o, the same binding this function has in Bash. */
rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15);
- c = add_set_cmd ("prompt", class_support, var_string,
- (char *) &new_async_prompt, "Set gdb's prompt",
- &setlist);
- deprecated_add_show_from_set (c, &showlist);
- set_cmd_sfunc (c, set_async_prompt);
+ add_setshow_string_cmd ("prompt", class_support,
+ &new_async_prompt, _("\
+Set gdb's prompt"), _("\
+Show gdb's prompt"), NULL,
+ set_async_prompt,
+ show_new_async_prompt,
+ &setlist, &showlist);
add_com ("dont-repeat", class_support, dont_repeat_command, _("\
Don't repeat this command.\n\
Without an argument, command line editing is enabled. To edit, use\n\
EMACS-like or VI-like commands like control-P or ESC."),
set_async_editing_command,
- NULL, /* FIXME: i18n: */
+ show_async_command_editing_p,
&setlist, &showlist);
add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\
Use \"on\" to enable the saving, and \"off\" to disable it.\n\
Without an argument, saving is enabled."),
NULL,
- NULL, /* FIXME: i18n: */
+ show_write_history_p,
&sethistlist, &showhistlist);
- c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size,
- "Set the size of the command history,\n\
-ie. the number of previous commands to keep a record of.", &sethistlist);
- deprecated_add_show_from_set (c, &showhistlist);
- set_cmd_sfunc (c, set_history_size_command);
+ add_setshow_integer_cmd ("size", no_class, &history_size, _("\
+Set the size of the command history,"), _("\
+Show the size of the command history,"), _("\
+ie. the number of previous commands to keep a record of."),
+ set_history_size_command,
+ show_history_size,
+ &sethistlist, &showhistlist);
- c = add_set_cmd ("filename", no_class, var_filename,
- (char *) &history_filename,
- "Set the filename in which to record the command history\n\
-(the list of previous commands of which a record is kept).", &sethistlist);
- set_cmd_completer (c, filename_completer);
- deprecated_add_show_from_set (c, &showhistlist);
+ add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\
+Set the filename in which to record the command history"), _("\
+Show the filename in which to record the command history"), _("\
+(the list of previous commands of which a record is kept)."),
+ NULL,
+ show_history_filename,
+ &sethistlist, &showhistlist);
add_setshow_boolean_cmd ("confirm", class_support, &caution, _("\
Set whether to confirm potentially dangerous operations."), _("\
Show whether to confirm potentially dangerous operations."), NULL,
NULL,
- NULL, /* FIXME: i18n: */
+ show_caution,
&setlist, &showlist);
add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\
0 == normal; 1 == fullname (for use when running under emacs)\n\
2 == output annotated suitably for use by programs that control GDB."),
set_async_annotation_level,
- NULL, /* FIXME: i18n: */
+ show_annotation_level,
&setlist, &showlist);
add_setshow_boolean_cmd ("exec-done-display", class_support,
Show notification of completion for asynchronous execution commands."), _("\
Use \"on\" to enable the notification, and \"off\" to disable it."),
NULL,
- NULL, /* FIXME: i18n: */
+ show_exec_done_display_p,
&setlist, &showlist);
}
init_cli_cmds();
init_main (); /* But that omits this file! Do it now */
+ initialize_stdin_serial ();
+
async_init_signals ();
/* We need a default language for parsing expressions, so simple things like