/* Top level stuff for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "gdbcmd.h"
-#include "call-cmds.h"
#include "cli/cli-cmds.h"
#include "cli/cli-script.h"
#include "cli/cli-setshow.h"
#include "event-loop.h"
#include "gdbthread.h"
#include "python/python.h"
+#include "interps.h"
+#include "observer.h"
+#include "maint.h"
/* readline include files. */
#include "readline/readline.h"
#include <ctype.h>
#include "ui-out.h"
#include "cli-out.h"
+#include "tracepoint.h"
+
+extern void initialize_all_files (void);
+
+#define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
+#define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
+#define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
/* Default command line prompt. This is overriden in some configs. */
extern char lang_frame_mismatch_warn[]; /* language.c */
-/* Flag for whether we want all the "from_tty" gubbish printed. */
+/* Flag for whether we want to confirm potentially dangerous
+ operations. Default is yes. */
+
+int confirm = 1;
-int caution = 1; /* Default is yes, sigh. */
static void
-show_caution (struct ui_file *file, int from_tty,
+show_confirm (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"),
+ fprintf_filtered (file, _("Whether to confirm potentially "
+ "dangerous operations is %s.\n"),
value);
}
void (*window_hook) (FILE *, char *);
-int epoch_interface;
-int xgdb_verbose;
-
/* Buffer used for reading command lines, and the size
allocated for it so far. */
-char *line;
-int linesize = 100;
+char *saved_command_line;
+int saved_command_line_size = 100;
/* Nonzero if the current command is modified by "server ". This
affects things like recording into the command history, commands
void (*deprecated_interactive_hook) (void);
-/* Tell the GUI someone changed the register REGNO. -1 means
+/* Tell the GUI someone changed the register REGNO. -1 means
that the caller does not know which register changed or
that several registers have changed (see value_assign). */
void (*deprecated_register_changed_hook) (int regno);
#ifdef SIGHUP
/* NOTE 1999-04-29: This function 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
-quit_cover (void *s)
+ event-top.c into this file, top.c. */
+/* static */ void
+quit_cover (void)
{
- caution = 0; /* Throw caution to the wind -- we're exiting.
- This prevents asking the user dumb
- questions. */
+ /* Stop asking user for confirmation --- we're exiting. This
+ prevents asking the user dumb questions. */
+ confirm = 0;
quit_command ((char *) 0, 0);
- return 0;
}
#endif /* defined SIGHUP */
\f
-/* Line number we are currently in in a file which is being sourced. */
+/* Line number we are currently in, in a file which is being sourced. */
/* 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 */
+ event-top.c into this file, top.c. */
/* static */ int source_line_number;
/* Name of the file we are sourcing. */
/* 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 */
+ event-top.c into this file, top.c. */
/* static */ const char *source_file_name;
/* Clean up on error during a "source" command (or execution of a
void (*pre_init_ui_hook) (void);
#ifdef __MSDOS__
-void
+static void
do_chdir_cleanup (void *old_dir)
{
chdir (old_dir);
}
#endif
-void
+struct cleanup *
prepare_execute_command (void)
{
- free_all_values ();
+ struct value *mark;
+ struct cleanup *cleanup;
+
+ mark = value_mark ();
+ cleanup = make_cleanup_value_free_to_mark (mark);
/* With multiple threads running while the one we're examining is
stopped, the dcache can get stale without us being able to detect
help things like backtrace. */
if (non_stop)
target_dcache_invalidate ();
+
+ return cleanup;
+}
+
+/* Tell the user if the language has changed (except first time) after
+ executing a command. */
+
+void
+check_frame_language_change (void)
+{
+ static int warned = 0;
+
+ /* First make sure that a new frame has been selected, in case the
+ command or the hooks changed the program state. */
+ deprecated_safe_get_selected_frame ();
+ if (current_language != expected_language)
+ {
+ if (language_mode == language_mode_auto && info_verbose)
+ {
+ language_info (1); /* Print what changed. */
+ }
+ warned = 0;
+ }
+
+ /* Warn the user if the working language does not match the language
+ of the current frame. Only warn the user if we are actually
+ running the program, i.e. there is a stack. */
+ /* FIXME: This should be cacheing the frame and only running when
+ the frame changes. */
+
+ if (has_stack_frames ())
+ {
+ enum language flang;
+
+ flang = get_frame_language ();
+ if (!warned
+ && flang != language_unknown
+ && flang != current_language->la_language)
+ {
+ printf_filtered ("%s\n", lang_frame_mismatch_warn);
+ warned = 1;
+ }
+ }
}
/* Execute the line P as a command, in the current user context.
void
execute_command (char *p, int from_tty)
{
+ struct cleanup *cleanup_if_error, *cleanup;
struct cmd_list_element *c;
- enum language flang;
- static int warned = 0;
char *line;
- prepare_execute_command ();
+ cleanup_if_error = make_bpstat_clear_actions_cleanup ();
+ cleanup = prepare_execute_command ();
/* Force cleanup of any alloca areas if using C alloca instead of
a builtin alloca. */
/* This can happen when command_line_input hits end of file. */
if (p == NULL)
- return;
+ {
+ do_cleanups (cleanup);
+ return;
+ }
target_log_command (p);
p++;
if (*p)
{
+ const char *cmd = p;
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);
+ c = lookup_cmd (&cmd, cmdlist, "", 0, 1);
+ p = (char *) cmd;
/* Pass null arg rather than an empty one. */
arg = *p ? p : 0;
execute_cmd_pre_hook (c);
if (c->flags & DEPRECATED_WARN_USER)
- deprecated_cmd_warning (&line);
+ deprecated_cmd_warning (line);
- if (c->class == class_user)
+ /* c->user_commands would be NULL in the case of a python command. */
+ if (c->class == class_user && c->user_commands)
execute_user_command (c, arg);
- else if (c->type == set_cmd || c->type == show_cmd)
- do_setshow_command (arg, from_tty & caution, c);
+ else if (c->type == set_cmd)
+ do_set_command (arg, from_tty, c);
+ else if (c->type == show_cmd)
+ do_show_command (arg, from_tty, c);
else if (!cmd_func_p (c))
error (_("That is not a command, just a help topic."));
else if (deprecated_call_command_hook)
- deprecated_call_command_hook (c, arg, from_tty & caution);
+ deprecated_call_command_hook (c, arg, from_tty);
else
- cmd_func (c, arg, from_tty & caution);
-
- /* If this command has been post-hooked, run the hook last. */
- execute_cmd_post_hook (c);
-
- }
+ cmd_func (c, arg, from_tty);
- /* Tell the user if the language has changed (except first time).
- First make sure that a new frame has been selected, in case this
- command or the hooks changed the program state. */
- deprecated_safe_get_selected_frame ();
- if (current_language != expected_language)
- {
- if (language_mode == language_mode_auto && info_verbose)
+ /* If the interpreter is in sync mode (we're running a user
+ command's list, running command hooks or similars), and we
+ just ran a synchronous command that started the target, wait
+ for that command to end. */
+ if (!interpreter_async && sync_execution)
{
- language_info (1); /* Print what changed. */
+ while (gdb_do_one_event () >= 0)
+ if (!sync_execution)
+ break;
}
- warned = 0;
- }
- /* Warn the user if the working language does not match the
- language of the current frame. Only warn the user if we are
- actually running the program, i.e. there is a stack. */
- /* FIXME: This should be cacheing the frame and only running when
- the frame changes. */
+ /* If this command has been post-hooked, run the hook last. */
+ execute_cmd_post_hook (c);
- if (has_stack_frames ())
- {
- flang = get_frame_language ();
- if (!warned
- && flang != language_unknown
- && flang != current_language->la_language)
- {
- printf_filtered ("%s\n", lang_frame_mismatch_warn);
- warned = 1;
- }
}
+
+ check_frame_language_change ();
+
+ do_cleanups (cleanup);
+ discard_cleanups (cleanup_if_error);
}
/* Run execute_command for P and FROM_TTY. Capture its output into the
restoration callbacks. */
cleanup = set_batch_flag_and_make_cleanup_restore_page_info ();
+ make_cleanup_restore_integer (&interpreter_async);
+ interpreter_async = 0;
+
str_file = mem_fileopen ();
make_cleanup_ui_file_delete (str_file);
make_cleanup_restore_ui_file (&gdb_stdtarg);
make_cleanup_restore_ui_file (&gdb_stdtargerr);
- if (ui_out_redirect (uiout, str_file) < 0)
+ if (ui_out_redirect (current_uiout, str_file) < 0)
warning (_("Current output protocol does not support redirection"));
else
- make_cleanup_ui_out_redirect_pop (uiout);
+ make_cleanup_ui_out_redirect_pop (current_uiout);
gdb_stdout = str_file;
gdb_stderr = str_file;
if (window_hook && instream == stdin)
(*window_hook) (instream, get_prompt ());
- quit_flag = 0;
+ clear_quit_flag ();
if (instream == stdin && stdin_is_tty)
reinitialize_more_filter ();
old_chain = make_cleanup (null_cleanup, 0);
- /* Get a command-line. This calls the readline package. */
+ /* Get a command-line. This calls the readline package. */
command = command_line_input (instream == stdin ?
get_prompt () : (char *) NULL,
instream == stdin, "prompt");
if (command == 0)
- return;
+ {
+ do_cleanups (old_chain);
+ return;
+ }
make_command_stats_cleanup (1);
}
}
\f
+/* When nonzero, cause dont_repeat to do nothing. This should only be
+ set via prevent_dont_repeat. */
+
+static int suppress_dont_repeat = 0;
+
/* Commands call this if they do not want to be repeated by null lines. */
void
dont_repeat (void)
{
- if (server_command)
+ if (suppress_dont_repeat || server_command)
return;
/* If we aren't reading from standard input, we are saving the last
thing read from stdin in line and don't want to delete it. Null
lines won't repeat here in any case. */
if (instream == stdin)
- *line = 0;
+ *saved_command_line = 0;
}
+
+/* Prevent dont_repeat from working, and return a cleanup that
+ restores the previous state. */
+
+struct cleanup *
+prevent_dont_repeat (void)
+{
+ struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat);
+
+ suppress_dont_repeat = 1;
+ return result;
+}
+
\f
/* Read a line from the stream "instream" without command line editing.
/* 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 */
+ event-top.c into this file, top.c. */
/* static */ int history_expansion_p;
value);
}
-static int history_size;
+/* The variable associated with the "set/show history size"
+ command. */
+static unsigned int history_size_setshow_var;
+
static void
show_history_size (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
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"),
+ fprintf_filtered (file, _("The filename in which to record "
+ "the command history is \"%s\".\n"),
value);
}
(*after_char_processing_hook) ();
gdb_assert (after_char_processing_hook == NULL);
- /* gdb_do_one_event argument is unused. */
- while (gdb_do_one_event (NULL) >= 0)
+ while (gdb_do_one_event () >= 0)
if (gdb_readline_wrapper_done)
break;
/* Find the current line, and find the next line to use. */
where = where_history();
- /* FIXME: kettenis/20020817: max_input_history is renamed into
- history_max_entries in readline-4.2. When we do a new readline
- import, we should probably change it here too, even though
- readline maintains backwards compatibility for now by still
- defining max_input_history. */
- if ((history_is_stifled () && (history_length >= max_input_history)) ||
- (where >= history_length - 1))
+ if ((history_is_stifled () && (history_length >= history_max_entries))
+ || (where >= history_length - 1))
operate_saved_history = where;
else
operate_saved_history = where + 1;
/* Control-C quits instantly if typed while in this loop
since it should not wait until the user types a newline. */
immediate_quit++;
+ QUIT;
#ifdef STOP_SIGNAL
if (job_control)
signal (STOP_SIGNAL, handle_stop_sig);
if (expanded < 0)
{
xfree (history_value);
- return command_line_input (prompt_arg, repeat, annotation_suffix);
+ return command_line_input (prompt_arg, repeat,
+ annotation_suffix);
}
if (strlen (history_value) > linelength)
{
/* If we just got an empty line, and that is supposed to repeat the
previous command, return the value in the global buffer. */
if (repeat && p == linebuffer)
- return line;
+ return saved_command_line;
for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
if (repeat && !*p1)
- return line;
+ return saved_command_line;
*p = 0;
/* Save into global buffer if appropriate. */
if (repeat)
{
- if (linelength > linesize)
+ if (linelength > saved_command_line_size)
{
- line = xrealloc (line, linelength);
- linesize = linelength;
+ saved_command_line = xrealloc (saved_command_line, linelength);
+ saved_command_line_size = linelength;
}
- strcpy (line, linebuffer);
- return line;
+ strcpy (saved_command_line, linebuffer);
+ return saved_command_line;
}
return linebuffer;
/* Second line is a copyright notice. */
- fprintf_filtered (stream, "Copyright (C) 2010 Free Software Foundation, Inc.\n");
+ fprintf_filtered (stream,
+ "Copyright (C) 2013 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
there is no warranty. */
fprintf_filtered (stream, "\
-License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
-This is free software: you are free to change and redistribute it.\n\
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
+\nThis is free software: you are free to change and redistribute it.\n\
There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
and \"show warranty\" for details.\n");
fprintf_filtered (stream, "This GDB was configured as \"");
if (strcmp (host_name, target_name) != 0)
{
- fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name);
+ fprintf_filtered (stream, "--host=%s --target=%s",
+ host_name, target_name);
}
else
{
fprintf_filtered (stream, "%s", host_name);
}
- fprintf_filtered (stream, "\".");
+ fprintf_filtered (stream, "\".\n\
+Type \"show configuration\" for configuration details.");
if (REPORT_BUGS_TO[0])
{
- fprintf_filtered (stream,
+ fprintf_filtered (stream,
_("\nFor bug reporting instructions, please see:\n"));
fprintf_filtered (stream, "%s.", REPORT_BUGS_TO);
}
}
+
+/* Print the details of GDB build-time configuration. */
+void
+print_gdb_configuration (struct ui_file *stream)
+{
+ fprintf_filtered (stream, _("\
+This GDB was configured as follows:\n\
+ configure --host=%s --target=%s\n\
+"), host_name, target_name);
+ fprintf_filtered (stream, _("\
+ --with-auto-load-dir=%s\n\
+ --with-auto-load-safe-path=%s\n\
+"), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH);
+#if HAVE_LIBEXPAT
+ fprintf_filtered (stream, _("\
+ --with-expat\n\
+"));
+#else
+ fprintf_filtered (stream, _("\
+ --without-expat\n\
+"));
+#endif
+ if (GDB_DATADIR[0])
+ fprintf_filtered (stream, _("\
+ --with-gdb-datadir=%s%s\n\
+"), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : "");
+#ifdef ICONV_BIN
+ fprintf_filtered (stream, _("\
+ --with-iconv-bin=%s%s\n\
+"), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : "");
+#endif
+ if (JIT_READER_DIR[0])
+ fprintf_filtered (stream, _("\
+ --with-jit-reader-dir=%s%s\n\
+"), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : "");
+#if HAVE_LIBUNWIND_IA64_H
+ fprintf_filtered (stream, _("\
+ --with-libunwind-ia64\n\
+"));
+#else
+ fprintf_filtered (stream, _("\
+ --without-libunwind-ia64\n\
+"));
+#endif
+#if HAVE_LIBLZMA
+ fprintf_filtered (stream, _("\
+ --with-lzma\n\
+"));
+#else
+ fprintf_filtered (stream, _("\
+ --without-lzma\n\
+"));
+#endif
+#ifdef WITH_PYTHON_PATH
+ fprintf_filtered (stream, _("\
+ --with-python=%s%s\n\
+"), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : "");
+#endif
+#ifdef RELOC_SRCDIR
+ fprintf_filtered (stream, _("\
+ --with-relocated-sources=%s\n\
+"), RELOC_SRCDIR);
+#endif
+ if (DEBUGDIR[0])
+ fprintf_filtered (stream, _("\
+ --with-separate-debug-dir=%s%s\n\
+"), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : "");
+ if (TARGET_SYSTEM_ROOT[0])
+ fprintf_filtered (stream, _("\
+ --with-sysroot=%s%s\n\
+"), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : "");
+ if (SYSTEM_GDBINIT[0])
+ fprintf_filtered (stream, _("\
+ --with-system-gdbinit=%s%s\n\
+"), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : "");
+#if HAVE_ZLIB_H
+ fprintf_filtered (stream, _("\
+ --with-zlib\n\
+"));
+#else
+ fprintf_filtered (stream, _("\
+ --without-zlib\n\
+"));
+#endif
+#if HAVE_LIBBABELTRACE
+ fprintf_filtered (stream, _("\
+ --with-babeltrace\n\
+"));
+#else
+ fprintf_filtered (stream, _("\
+ --without-babeltrace\n\
+"));
+#endif
+}
\f
-/* get_prompt: access method for the GDB prompt string. */
+
+/* The current top level prompt, settable with "set prompt", and/or
+ with the python `gdb.prompt_hook' hook. */
+static char *top_prompt;
+
+/* Access method for the GDB prompt string. */
char *
get_prompt (void)
{
- return PROMPT (0);
+ return top_prompt;
}
+/* Set method for the GDB prompt string. */
+
void
-set_prompt (char *s)
+set_prompt (const char *s)
{
-/* ??rehrauer: I don't know why this fails, since it looks as though
- assignments to prompt are wrapped in calls to xstrdup...
- if (prompt != NULL)
- xfree (prompt);
- */
- PROMPT (0) = xstrdup (s);
+ char *p = xstrdup (s);
+
+ xfree (top_prompt);
+ top_prompt = p;
}
\f
return qr;
}
-/* Helper routine for quit_force that requires error handling. */
-
-static int
-quit_target (void *arg)
-{
- struct qt_args *qt = (struct qt_args *)arg;
-
- /* Kill or detach all inferiors. */
- iterate_over_inferiors (kill_or_detach, qt);
-
- /* Give all pushed targets a chance to do minimal cleanup, and pop
- them all out. */
- pop_all_targets (1);
-
- /* Save the history information if it is appropriate to do so. */
- if (write_history_p && history_filename)
- write_history (history_filename);
-
- do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before
- exiting. */
- return 0;
-}
-
/* Quit without asking for confirmation. */
void
{
int exit_code = 0;
struct qt_args qt;
+ volatile struct gdb_exception ex;
/* An optional expression may be used to cause gdb to terminate with the
value of that expression. */
qt.args = args;
qt.from_tty = from_tty;
+ /* Wrappers to make the code below a bit more readable. */
+#define DO_TRY \
+ TRY_CATCH (ex, RETURN_MASK_ALL)
+
+#define DO_PRINT_EX \
+ if (ex.reason < 0) \
+ exception_print (gdb_stderr, ex)
+
/* We want to handle any quit errors and exit regardless. */
- catch_errors (quit_target, &qt,
- "Quitting: ", RETURN_MASK_ALL);
- exit (exit_code);
-}
+ /* Get out of tfind mode, and kill or detach all inferiors. */
+ DO_TRY
+ {
+ disconnect_tracing ();
+ iterate_over_inferiors (kill_or_detach, &qt);
+ }
+ DO_PRINT_EX;
+
+ /* Give all pushed targets a chance to do minimal cleanup, and pop
+ them all out. */
+ DO_TRY
+ {
+ pop_all_targets ();
+ }
+ DO_PRINT_EX;
-/* If OFF, the debugger will run in non-interactive mode, which means
- that it will automatically select the default answer to all the
- queries made to the user. If ON, gdb will wait for the user to
- answer all queries. If AUTO, gdb will determine whether to run
- in interactive mode or not depending on whether stdin is a terminal
- or not. */
-static enum auto_boolean interactive_mode = AUTO_BOOLEAN_AUTO;
+ /* Save the history information if it is appropriate to do so. */
+ DO_TRY
+ {
+ if (write_history_p && history_filename)
+ write_history (history_filename);
+ }
+ DO_PRINT_EX;
-/* Implement the "show interactive-mode" option. */
+ /* Do any final cleanups before exiting. */
+ DO_TRY
+ {
+ do_final_cleanups (all_cleanups ());
+ }
+ DO_PRINT_EX;
-static void
-show_interactive_mode (struct ui_file *file, int from_tty,
- struct cmd_list_element *c,
- const char *value)
-{
- if (interactive_mode == AUTO_BOOLEAN_AUTO)
- fprintf_filtered (file, "\
-Debugger's interactive mode is %s (currently %s).\n",
- value, input_from_terminal_p () ? "on" : "off");
- else
- fprintf_filtered (file, "Debugger's interactive mode is %s.\n", value);
+ exit (exit_code);
}
/* Returns whether GDB is running on a terminal and input is
int
input_from_terminal_p (void)
{
- if (interactive_mode != AUTO_BOOLEAN_AUTO)
- return interactive_mode == AUTO_BOOLEAN_TRUE;
-
if (batch_flag)
return 0;
static void
dont_repeat_command (char *ignored, int from_tty)
{
- *line = 0; /* Can't call dont_repeat here because we're
- not necessarily reading from stdin. */
+ /* Can't call dont_repeat here because we're not necessarily reading
+ from stdin. */
+ *saved_command_line = 0;
}
\f
/* Functions to manipulate command line editing control variables. */
Relative to history_base. */
static int num = 0;
- /* The first command in the history which doesn't exist (i.e. one more
- than the number of the last command). Relative to history_base. */
- int hist_len;
-
/* Print out some of the commands from the command history. */
- /* First determine the length of the history list. */
- hist_len = history_size;
- for (offset = 0; offset < history_size; offset++)
- {
- if (!history_get (history_base + offset))
- {
- hist_len = offset;
- break;
- }
- }
if (args)
{
/* "show commands" means print the last Hist_print commands. */
else
{
- num = hist_len - Hist_print;
+ num = history_length - Hist_print;
}
if (num < 0)
/* If there are at least Hist_print commands, we want to display the last
Hist_print rather than, say, the last 6. */
- if (hist_len - num < Hist_print)
+ if (history_length - num < Hist_print)
{
- num = hist_len - Hist_print;
+ num = history_length - Hist_print;
if (num < 0)
num = 0;
}
- for (offset = num; offset < num + Hist_print && offset < hist_len; offset++)
+ for (offset = num;
+ offset < num + Hist_print && offset < history_length;
+ offset++)
{
printf_filtered ("%5d %s\n", history_base + offset,
(history_get (history_base + offset))->line);
static void
set_history_size_command (char *args, int from_tty, struct cmd_list_element *c)
{
- if (history_size == INT_MAX)
- unstifle_history ();
- else if (history_size >= 0)
- stifle_history (history_size);
- else
+ /* Readline's history interface works with 'int', so it can only
+ handle history sizes up to INT_MAX. The command itself is
+ uinteger, so UINT_MAX means "unlimited", but we only get that if
+ the user does "set history size 0" -- "set history size <UINT_MAX>"
+ throws out-of-range. */
+ if (history_size_setshow_var > INT_MAX
+ && history_size_setshow_var != UINT_MAX)
{
- history_size = INT_MAX;
- error (_("History size must be non-negative"));
+ unsigned int new_value = history_size_setshow_var;
+
+ /* Restore previous value before throwing. */
+ if (history_is_stifled ())
+ history_size_setshow_var = history_max_entries;
+ else
+ history_size_setshow_var = UINT_MAX;
+
+ error (_("integer %u out of range"), new_value);
}
+
+ /* Commit the new value to readline's history. */
+ if (history_size_setshow_var == UINT_MAX)
+ unstifle_history ();
+ else
+ stifle_history (history_size_setshow_var);
}
void
set_history (char *args, int from_tty)
{
- printf_unfiltered (_("\"set history\" must be followed by the name of a history subcommand.\n"));
+ printf_unfiltered (_("\"set history\" must be followed "
+ "by the name of a history subcommand.\n"));
help_list (sethistlist, "set history ", -1, gdb_stdout);
}
void
set_verbose (char *args, int from_tty, struct cmd_list_element *c)
{
- char *cmdname = "verbose";
+ const char *cmdname = "verbose";
struct cmd_list_element *showcmd;
showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
+ gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS);
if (info_verbose)
{
tmpenv = getenv ("HISTSIZE");
if (tmpenv)
- history_size = atoi (tmpenv);
- else if (!history_size)
- history_size = 256;
+ {
+ int var;
- stifle_history (history_size);
+ var = atoi (tmpenv);
+ if (var < 0)
+ {
+ /* Prefer ending up with no history rather than overflowing
+ readline's history interface, which uses signed 'int'
+ everywhere. */
+ var = 0;
+ }
+
+ history_size_setshow_var = var;
+ }
+ /* If the init file hasn't set a size yet, pick the default. */
+ else if (history_size_setshow_var == 0)
+ history_size_setshow_var = 256;
+
+ /* Note that unlike "set history size 0", "HISTSIZE=0" really sets
+ the history size to 0... */
+ stifle_history (history_size_setshow_var);
tmpenv = getenv ("GDBHISTFILE");
if (tmpenv)
}
static void
-show_new_async_prompt (struct ui_file *file, int from_tty,
- struct cmd_list_element *c, const char *value)
+show_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);
}
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"),
+ fprintf_filtered (file, _("Editing of command lines as "
+ "they are typed is %s.\n"),
value);
}
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"),
+ fprintf_filtered (file, _("Notification of completion for "
+ "asynchronous execution commands is %s.\n"),
value);
}
+
+/* "set" command for the gdb_datadir configuration variable. */
+
+static void
+set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c)
+{
+ observer_notify_gdb_datadir_changed ();
+}
+
static void
init_main (void)
{
- /* initialize the prompt stack to a simple "(gdb) " prompt or to
- whatever the DEFAULT_PROMPT is. */
- the_prompts.top = 0;
- PREFIX (0) = "";
- PROMPT (0) = xstrdup (DEFAULT_PROMPT);
- SUFFIX (0) = "";
+ /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
+ the DEFAULT_PROMPT is. */
+ set_prompt (DEFAULT_PROMPT);
+
/* Set things up for annotation_level > 1, if the user ever decides
to use it. */
async_annotation_suffix = "prompt";
- /* Set the variable associated with the setshow prompt command. */
- new_async_prompt = xstrdup (PROMPT (0));
-
- /* If gdb was started with --annotate=2, this is equivalent to the
- user entering the command 'set annotate 2' at the gdb prompt, so
- we need to do extra processing. */
- if (annotation_level > 1)
- set_async_annotation_level (NULL, 0, NULL);
/* Set the important stuff up for command editing. */
command_editing_p = 1;
rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15);
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,
+ &top_prompt,
+ _("Set gdb's prompt"),
+ _("Show gdb's prompt"),
+ NULL, NULL,
+ show_prompt,
&setlist, &showlist);
add_com ("dont-repeat", class_support, dont_repeat_command, _("\
-Don't repeat this command.\n\
-Primarily used inside of user-defined commands that should not be repeated when\n\
+Don't repeat this command.\nPrimarily \
+used inside of user-defined commands that should not be repeated when\n\
hitting return."));
add_setshow_boolean_cmd ("editing", class_support,
show_write_history_p,
&sethistlist, &showhistlist);
- add_setshow_integer_cmd ("size", no_class, &history_size, _("\
+ add_setshow_uinteger_cmd ("size", no_class, &history_size_setshow_var, _("\
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);
+ie. the number of previous commands to keep a record of.\n\
+If set to \"unlimited\", the number of commands kept in the history\n\
+list is unlimited. This defaults to the value of the environment\n\
+variable \"HISTSIZE\", or to 256 if this variable is not set."),
+ set_history_size_command,
+ show_history_size,
+ &sethistlist, &showhistlist);
add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\
Set the filename in which to record the command history"), _("\
show_history_filename,
&sethistlist, &showhistlist);
- add_setshow_boolean_cmd ("confirm", class_support, &caution, _("\
+ add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\
Set whether to confirm potentially dangerous operations."), _("\
Show whether to confirm potentially dangerous operations."), NULL,
NULL,
- show_caution,
+ show_confirm,
&setlist, &showlist);
add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\
Show 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,
show_annotation_level,
&setlist, &showlist);
show_exec_done_display_p,
&setlist, &showlist);
- add_setshow_auto_boolean_cmd ("interactive-mode", class_support,
- &interactive_mode, _("\
-Set whether GDB should run in interactive mode or not"), _("\
-Show whether GDB runs in interactive mode"), _("\
-If on, run in interactive mode and wait for the user to answer\n\
-all queries. If off, run in non-interactive mode and automatically\n\
-assume the default answer to all queries. If auto (the default),\n\
-determine which mode to use based on the standard input settings"),
- NULL,
- show_interactive_mode,
- &setlist, &showlist);
-
add_setshow_filename_cmd ("data-directory", class_maintenance,
&gdb_datadir, _("Set GDB's data directory."),
_("Show GDB's data directory."),
_("\
When set, GDB uses the specified path to search for data files."),
- NULL, NULL,
+ set_gdb_datadir, NULL,
&setlist,
&showlist);
}
initialize_inferiors ();
initialize_current_architecture ();
init_cli_cmds();
+ initialize_event_loop ();
init_main (); /* But that omits this file! Do it now. */
initialize_stdin_serial ();
set_language (language_c);
expected_language = current_language; /* Don't warn about the change. */
- /* Allow another UI to initialize. If the UI fails to initialize,
+ /* Allow another UI to initialize. If the UI fails to initialize,
and it wants GDB to revert to the CLI, it should clear
deprecated_init_ui_hook. */
if (deprecated_init_ui_hook)