b4a14fd09b
* top.c: Include interps.h. (execute_command): If the target can async, but the interpreter is in sync mode, synchronously wait for the command to finish before returning. (execute_command_to_string): Force the interpreter to sync mode. * infrun.c: Include interps.h. (fetch_inferior_event): Don't restore the prompt yet if the interpreter is in sync mode. * interps.c (interpreter_async): New global. * interps.h (interpreter_async): Declare. * inf-loop.c: Include interps.h. (inferior_event_handler): Don't print the language change or run breakpoint commands yet if the interpreter in is sync mode. * main.c (captured_command_loop): Flip the interpreter to async mode. * cli/cli-script.c: Include interps.h. (execute_user_command, while_command, if_command): Force the interpreter to sync mode. * python/python.c: Include interps.h. (python_command, execute_gdb_command): Force the interpreter to sync mode.
1799 lines
51 KiB
C
1799 lines
51 KiB
C
/* 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, 2011 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#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 "cli/cli-decode.h"
|
||
#include "symtab.h"
|
||
#include "inferior.h"
|
||
#include "exceptions.h"
|
||
#include <signal.h>
|
||
#include "target.h"
|
||
#include "breakpoint.h"
|
||
#include "gdbtypes.h"
|
||
#include "expression.h"
|
||
#include "value.h"
|
||
#include "language.h"
|
||
#include "terminal.h" /* For job_control. */
|
||
#include "annotate.h"
|
||
#include "completer.h"
|
||
#include "top.h"
|
||
#include "version.h"
|
||
#include "serial.h"
|
||
#include "doublest.h"
|
||
#include "gdb_assert.h"
|
||
#include "main.h"
|
||
#include "event-loop.h"
|
||
#include "gdbthread.h"
|
||
#include "python/python.h"
|
||
#include "interps.h"
|
||
|
||
/* readline include files. */
|
||
#include "readline/readline.h"
|
||
#include "readline/history.h"
|
||
|
||
/* readline defines this. */
|
||
#undef savestring
|
||
|
||
#include <sys/types.h>
|
||
|
||
#include "event-top.h"
|
||
#include "gdb_string.h"
|
||
#include "gdb_stat.h"
|
||
#include <ctype.h>
|
||
#include "ui-out.h"
|
||
#include "cli-out.h"
|
||
|
||
#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. */
|
||
|
||
#ifndef DEFAULT_PROMPT
|
||
#define DEFAULT_PROMPT "(gdb) "
|
||
#endif
|
||
|
||
/* 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[PATH_MAX + 1] = GDBINIT_FILENAME;
|
||
|
||
int inhibit_gdbinit = 0;
|
||
|
||
/* If nonzero, and GDB has been configured to be able to use windows,
|
||
attempt to open them upon startup. */
|
||
|
||
int use_windows = 0;
|
||
|
||
extern char lang_frame_mismatch_warn[]; /* language.c */
|
||
|
||
/* 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 executing a user-defined command or interacting
|
||
via a GUI. */
|
||
|
||
FILE *instream;
|
||
|
||
/* Flag to indicate whether a user defined command is currently running. */
|
||
|
||
int in_user_command;
|
||
|
||
/* Current working directory. */
|
||
|
||
char *current_directory;
|
||
|
||
/* The directory name is actually stored here (usually). */
|
||
char gdb_dirbuf[1024];
|
||
|
||
/* Function to call before reading a command, if nonzero.
|
||
The function receives two args: an input stream,
|
||
and a prompt string. */
|
||
|
||
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 *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
|
||
repeating on RETURN, etc. This is so a user interface (emacs, GUI,
|
||
whatever) can issue its own commands and also send along commands
|
||
from the user, and have the user not notice that the user interface
|
||
is issuing commands too. */
|
||
int server_command;
|
||
|
||
/* Baud rate specified for talking to serial target systems. Default
|
||
is left as -1, so targets can choose their own defaults. */
|
||
/* FIXME: This means that "show remotebaud" and gr_files_info can
|
||
print -1 or (unsigned int)-1. This is a Bad User Interface. */
|
||
|
||
int baud_rate = -1;
|
||
|
||
/* Timeout limit for response from target. */
|
||
|
||
/* The default value has been changed many times over the years. It
|
||
was originally 5 seconds. But that was thought to be a long time
|
||
to sit and wait, so it was changed to 2 seconds. That was thought
|
||
to be plenty unless the connection was going through some terminal
|
||
server or multiplexer or other form of hairy serial connection.
|
||
|
||
In mid-1996, remote_timeout was moved from remote.c to top.c and
|
||
it began being used in other remote-* targets. It appears that the
|
||
default was changed to 20 seconds at that time, perhaps because the
|
||
Renesas E7000 ICE didn't always respond in a timely manner.
|
||
|
||
But if 5 seconds is a long time to sit and wait for retransmissions,
|
||
20 seconds is far worse. This demonstrates the difficulty of using
|
||
a single variable for all protocol timeouts.
|
||
|
||
As remote.c is used much more than remote-e7000.c, it was changed
|
||
back to 2 seconds in 1999. */
|
||
|
||
int remote_timeout = 2;
|
||
|
||
/* Non-zero tells remote* modules to output debugging info. */
|
||
|
||
int remote_debug = 0;
|
||
|
||
/* Sbrk location on entry to main. Used for statistics only. */
|
||
#ifdef HAVE_SBRK
|
||
char *lim_at_start;
|
||
#endif
|
||
|
||
/* Hooks for alternate command interfaces. */
|
||
|
||
/* Called after most modules have been initialized, but before taking
|
||
users command file.
|
||
|
||
If the UI fails to initialize and it wants GDB to continue using
|
||
the default UI, then it should clear this hook before returning. */
|
||
|
||
void (*deprecated_init_ui_hook) (char *argv0);
|
||
|
||
/* This hook is called from within gdb's many mini-event loops which
|
||
could steal control from a real user interface's event loop. It
|
||
returns non-zero if the user is requesting a detach, zero
|
||
otherwise. */
|
||
|
||
int (*deprecated_ui_loop_hook) (int);
|
||
|
||
/* Called instead of command_loop at top level. Can be invoked via
|
||
throw_exception(). */
|
||
|
||
void (*deprecated_command_loop_hook) (void);
|
||
|
||
|
||
/* Called from print_frame_info to list the line we stopped in. */
|
||
|
||
void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
|
||
int line,
|
||
int stopline,
|
||
int noerror);
|
||
/* Replaces most of query. */
|
||
|
||
int (*deprecated_query_hook) (const char *, va_list);
|
||
|
||
/* Replaces most of warning. */
|
||
|
||
void (*deprecated_warning_hook) (const char *, va_list);
|
||
|
||
/* These three functions support getting lines of text from the user.
|
||
They are used in sequence. First deprecated_readline_begin_hook is
|
||
called with a text string that might be (for example) a message for
|
||
the user to type in a sequence of commands to be executed at a
|
||
breakpoint. If this function calls back to a GUI, it might take
|
||
this opportunity to pop up a text interaction window with this
|
||
message. Next, deprecated_readline_hook is called with a prompt
|
||
that is emitted prior to collecting the user input. It can be
|
||
called multiple times. Finally, deprecated_readline_end_hook is
|
||
called to notify the GUI that we are done with the interaction
|
||
window and it can close it. */
|
||
|
||
void (*deprecated_readline_begin_hook) (char *, ...);
|
||
char *(*deprecated_readline_hook) (char *);
|
||
void (*deprecated_readline_end_hook) (void);
|
||
|
||
/* Called as appropriate to notify the interface that we have attached
|
||
to or detached from an already running process. */
|
||
|
||
void (*deprecated_attach_hook) (void);
|
||
void (*deprecated_detach_hook) (void);
|
||
|
||
/* Called during long calculations to allow GUI to repair window
|
||
damage, and to check for stop buttons, etc... */
|
||
|
||
void (*deprecated_interactive_hook) (void);
|
||
|
||
/* 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);
|
||
|
||
/* Called when going to wait for the target. Usually allows the GUI
|
||
to run while waiting for target events. */
|
||
|
||
ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
|
||
struct target_waitstatus *status,
|
||
int options);
|
||
|
||
/* Used by UI as a wrapper around command execution. May do various
|
||
things like enabling/disabling buttons, etc... */
|
||
|
||
void (*deprecated_call_command_hook) (struct cmd_list_element * c,
|
||
char *cmd, int from_tty);
|
||
|
||
/* Called after a `set' command has finished. Is only run if the
|
||
`set' command succeeded. */
|
||
|
||
void (*deprecated_set_hook) (struct cmd_list_element * c);
|
||
|
||
/* Called when the current thread changes. Argument is thread id. */
|
||
|
||
void (*deprecated_context_hook) (int id);
|
||
|
||
/* Handler for SIGHUP. */
|
||
|
||
#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)
|
||
{
|
||
caution = 0; /* Throw caution to the wind -- we're exiting.
|
||
This prevents asking the user dumb
|
||
questions. */
|
||
quit_command ((char *) 0, 0);
|
||
return 0;
|
||
}
|
||
#endif /* defined SIGHUP */
|
||
|
||
/* 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. */
|
||
/* 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. */
|
||
/* static */ const char *source_file_name;
|
||
|
||
/* Clean up on error during a "source" command (or execution of a
|
||
user-defined command). */
|
||
|
||
void
|
||
do_restore_instream_cleanup (void *stream)
|
||
{
|
||
/* Restore the previous input stream. */
|
||
instream = stream;
|
||
}
|
||
|
||
/* Read commands from STREAM. */
|
||
void
|
||
read_command_file (FILE *stream)
|
||
{
|
||
struct cleanup *cleanups;
|
||
|
||
cleanups = make_cleanup (do_restore_instream_cleanup, instream);
|
||
instream = stream;
|
||
command_loop ();
|
||
do_cleanups (cleanups);
|
||
}
|
||
|
||
void (*pre_init_ui_hook) (void);
|
||
|
||
#ifdef __MSDOS__
|
||
void
|
||
do_chdir_cleanup (void *old_dir)
|
||
{
|
||
chdir (old_dir);
|
||
xfree (old_dir);
|
||
}
|
||
#endif
|
||
|
||
struct cleanup *
|
||
prepare_execute_command (void)
|
||
{
|
||
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
|
||
it. For the duration of the command, though, use the dcache to
|
||
help things like backtrace. */
|
||
if (non_stop)
|
||
target_dcache_invalidate ();
|
||
|
||
return cleanup;
|
||
}
|
||
|
||
/* Execute the line P as a command, in the current user context.
|
||
Pass FROM_TTY as second argument to the defining function. */
|
||
|
||
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;
|
||
|
||
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. */
|
||
alloca (0);
|
||
|
||
/* This can happen when command_line_input hits end of file. */
|
||
if (p == NULL)
|
||
{
|
||
do_cleanups (cleanup);
|
||
return;
|
||
}
|
||
|
||
target_log_command (p);
|
||
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
if (*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);
|
||
|
||
/* Pass null arg rather than an empty one. */
|
||
arg = *p ? p : 0;
|
||
|
||
/* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
|
||
while the is_complete_command(cfunc) test is just plain
|
||
bogus. They should both be replaced by a test of the form
|
||
c->strip_trailing_white_space_p. */
|
||
/* NOTE: cagney/2002-02-02: The function.cfunc in the below
|
||
can't be replaced with func. This is because it is the
|
||
cfunc, and not the func, that has the value that the
|
||
is_complete_command hack is testing for. */
|
||
/* Clear off trailing whitespace, except for set and complete
|
||
command. */
|
||
if (arg
|
||
&& c->type != set_cmd
|
||
&& !is_complete_command (c))
|
||
{
|
||
p = arg + strlen (arg) - 1;
|
||
while (p >= arg && (*p == ' ' || *p == '\t'))
|
||
p--;
|
||
*(p + 1) = '\0';
|
||
}
|
||
|
||
/* If this command has been pre-hooked, run the hook first. */
|
||
execute_cmd_pre_hook (c);
|
||
|
||
if (c->flags & DEPRECATED_WARN_USER)
|
||
deprecated_cmd_warning (&line);
|
||
|
||
if (c->class == class_user)
|
||
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 (!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);
|
||
else
|
||
cmd_func (c, arg, from_tty & caution);
|
||
|
||
/* 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 && is_running (inferior_ptid))
|
||
{
|
||
while (gdb_do_one_event () >= 0)
|
||
if (!sync_execution)
|
||
break;
|
||
}
|
||
|
||
/* If this command has been post-hooked, run the hook last. */
|
||
execute_cmd_post_hook (c);
|
||
|
||
}
|
||
|
||
/* 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)
|
||
{
|
||
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 ())
|
||
{
|
||
flang = get_frame_language ();
|
||
if (!warned
|
||
&& flang != language_unknown
|
||
&& flang != current_language->la_language)
|
||
{
|
||
printf_filtered ("%s\n", lang_frame_mismatch_warn);
|
||
warned = 1;
|
||
}
|
||
}
|
||
|
||
do_cleanups (cleanup);
|
||
discard_cleanups (cleanup_if_error);
|
||
}
|
||
|
||
/* Run execute_command for P and FROM_TTY. Capture its output into the
|
||
returned string, do not display it to the screen. BATCH_FLAG will be
|
||
temporarily set to true. */
|
||
|
||
char *
|
||
execute_command_to_string (char *p, int from_tty)
|
||
{
|
||
struct ui_file *str_file;
|
||
struct cleanup *cleanup;
|
||
char *retval;
|
||
|
||
/* GDB_STDOUT should be better already restored during these
|
||
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_stdout);
|
||
make_cleanup_restore_ui_file (&gdb_stderr);
|
||
make_cleanup_restore_ui_file (&gdb_stdlog);
|
||
make_cleanup_restore_ui_file (&gdb_stdtarg);
|
||
make_cleanup_restore_ui_file (&gdb_stdtargerr);
|
||
|
||
if (ui_out_redirect (current_uiout, str_file) < 0)
|
||
warning (_("Current output protocol does not support redirection"));
|
||
else
|
||
make_cleanup_ui_out_redirect_pop (current_uiout);
|
||
|
||
gdb_stdout = str_file;
|
||
gdb_stderr = str_file;
|
||
gdb_stdlog = str_file;
|
||
gdb_stdtarg = str_file;
|
||
gdb_stdtargerr = str_file;
|
||
|
||
execute_command (p, from_tty);
|
||
|
||
retval = ui_file_xstrdup (str_file, NULL);
|
||
|
||
do_cleanups (cleanup);
|
||
|
||
return retval;
|
||
}
|
||
|
||
/* Read commands from `instream' and execute them
|
||
until end of file or error reading instream. */
|
||
|
||
void
|
||
command_loop (void)
|
||
{
|
||
struct cleanup *old_chain;
|
||
char *command;
|
||
int stdin_is_tty = ISATTY (stdin);
|
||
|
||
while (instream && !feof (instream))
|
||
{
|
||
if (window_hook && instream == stdin)
|
||
(*window_hook) (instream, get_prompt (0));
|
||
|
||
quit_flag = 0;
|
||
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. */
|
||
command = command_line_input (instream == stdin ?
|
||
get_prompt (0) : (char *) NULL,
|
||
instream == stdin, "prompt");
|
||
if (command == 0)
|
||
{
|
||
do_cleanups (old_chain);
|
||
return;
|
||
}
|
||
|
||
make_command_stats_cleanup (1);
|
||
|
||
execute_command (command, instream == stdin);
|
||
|
||
/* Do any commands attached to breakpoint we are stopped at. */
|
||
bpstat_do_actions ();
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
}
|
||
|
||
/* 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 (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)
|
||
*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;
|
||
}
|
||
|
||
|
||
/* Read a line from the stream "instream" without command line editing.
|
||
|
||
It prints PROMPT_ARG once at the start.
|
||
Action is compatible with "readline", e.g. space for the result is
|
||
malloc'd and should be freed by the caller.
|
||
|
||
A NULL return means end of file. */
|
||
char *
|
||
gdb_readline (char *prompt_arg)
|
||
{
|
||
int c;
|
||
char *result;
|
||
int input_index = 0;
|
||
int result_size = 80;
|
||
|
||
if (prompt_arg)
|
||
{
|
||
/* Don't use a _filtered function here. It causes the assumed
|
||
character position to be off, since the newline we read from
|
||
the user is not accounted for. */
|
||
fputs_unfiltered (prompt_arg, gdb_stdout);
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
result = (char *) xmalloc (result_size);
|
||
|
||
while (1)
|
||
{
|
||
/* Read from stdin if we are executing a user defined command.
|
||
This is the right thing for prompt_for_continue, at least. */
|
||
c = fgetc (instream ? instream : stdin);
|
||
|
||
if (c == EOF)
|
||
{
|
||
if (input_index > 0)
|
||
/* The last line does not end with a newline. Return it, and
|
||
if we are called again fgetc will still return EOF and
|
||
we'll return NULL then. */
|
||
break;
|
||
xfree (result);
|
||
return NULL;
|
||
}
|
||
|
||
if (c == '\n')
|
||
{
|
||
if (input_index > 0 && result[input_index - 1] == '\r')
|
||
input_index--;
|
||
break;
|
||
}
|
||
|
||
result[input_index++] = c;
|
||
while (input_index >= result_size)
|
||
{
|
||
result_size *= 2;
|
||
result = (char *) xrealloc (result, result_size);
|
||
}
|
||
}
|
||
|
||
result[input_index++] = '\0';
|
||
return result;
|
||
}
|
||
|
||
/* Variables which control command line editing and history
|
||
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 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 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;
|
||
|
||
/* Prevent parts of the prompt from being redisplayed if annotations
|
||
are enabled, and readline's state getting out of sync. */
|
||
if (async_command_editing_p)
|
||
rl_callback_handler_remove ();
|
||
}
|
||
|
||
struct gdb_readline_wrapper_cleanup
|
||
{
|
||
void (*handler_orig) (char *);
|
||
int already_prompted_orig;
|
||
};
|
||
|
||
static void
|
||
gdb_readline_wrapper_cleanup (void *arg)
|
||
{
|
||
struct gdb_readline_wrapper_cleanup *cleanup = arg;
|
||
|
||
rl_already_prompted = cleanup->already_prompted_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)
|
||
{
|
||
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->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 (prompt);
|
||
rl_already_prompted = 1;
|
||
|
||
if (after_char_processing_hook)
|
||
(*after_char_processing_hook) ();
|
||
gdb_assert (after_char_processing_hook == NULL);
|
||
|
||
while (gdb_do_one_event () >= 0)
|
||
if (gdb_readline_wrapper_done)
|
||
break;
|
||
|
||
retval = gdb_readline_wrapper_result;
|
||
do_cleanups (back_to);
|
||
return retval;
|
||
}
|
||
|
||
|
||
/* The current saved history number from operate-and-get-next.
|
||
This is -1 if not valid. */
|
||
static int operate_saved_history = -1;
|
||
|
||
/* This is put on the appropriate hook and helps operate-and-get-next
|
||
do its work. */
|
||
static void
|
||
gdb_rl_operate_and_get_next_completion (void)
|
||
{
|
||
int delta = where_history () - operate_saved_history;
|
||
|
||
/* The `key' argument to rl_get_previous_history is ignored. */
|
||
rl_get_previous_history (delta, 0);
|
||
operate_saved_history = -1;
|
||
|
||
/* readline doesn't automatically update the display for us. */
|
||
rl_redisplay ();
|
||
|
||
after_char_processing_hook = NULL;
|
||
rl_pre_input_hook = NULL;
|
||
}
|
||
|
||
/* This is a gdb-local readline command handler. It accepts the
|
||
current command line (like RET does) and, if this command was taken
|
||
from the history, arranges for the next command in the history to
|
||
appear on the command line when the prompt returns.
|
||
We ignore the arguments. */
|
||
static int
|
||
gdb_rl_operate_and_get_next (int count, int key)
|
||
{
|
||
int where;
|
||
|
||
/* Use the async hook. */
|
||
after_char_processing_hook = gdb_rl_operate_and_get_next_completion;
|
||
|
||
/* 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))
|
||
operate_saved_history = where;
|
||
else
|
||
operate_saved_history = where + 1;
|
||
|
||
return rl_newline (1, key);
|
||
}
|
||
|
||
/* Read one line from the command input stream `instream'
|
||
into the local static buffer `linebuffer' (whose current length
|
||
is `linelength').
|
||
The buffer is made bigger as necessary.
|
||
Returns the address of the start of the line.
|
||
|
||
NULL is returned for end of file.
|
||
|
||
*If* the instream == stdin & stdin is a terminal, the line read
|
||
is copied into the file line saver (global var char *line,
|
||
length linesize) so that it can be duplicated.
|
||
|
||
This routine either uses fancy command line editing or
|
||
simple input as the user has requested. */
|
||
|
||
char *
|
||
command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
|
||
{
|
||
static char *linebuffer = 0;
|
||
static unsigned linelength = 0;
|
||
char *p;
|
||
char *p1;
|
||
char *rl;
|
||
char *local_prompt = prompt_arg;
|
||
char *nline;
|
||
char got_eof = 0;
|
||
|
||
/* The annotation suffix must be non-NULL. */
|
||
if (annotation_suffix == NULL)
|
||
annotation_suffix = "";
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg))
|
||
+ strlen (annotation_suffix) + 40);
|
||
if (prompt_arg == NULL)
|
||
local_prompt[0] = '\0';
|
||
else
|
||
strcpy (local_prompt, prompt_arg);
|
||
strcat (local_prompt, "\n\032\032");
|
||
strcat (local_prompt, annotation_suffix);
|
||
strcat (local_prompt, "\n");
|
||
}
|
||
|
||
if (linebuffer == 0)
|
||
{
|
||
linelength = 80;
|
||
linebuffer = (char *) xmalloc (linelength);
|
||
}
|
||
|
||
p = linebuffer;
|
||
|
||
/* Control-C quits instantly if typed while in this loop
|
||
since it should not wait until the user types a newline. */
|
||
immediate_quit++;
|
||
#ifdef STOP_SIGNAL
|
||
if (job_control)
|
||
signal (STOP_SIGNAL, handle_stop_sig);
|
||
#endif
|
||
|
||
while (1)
|
||
{
|
||
/* Make sure that all output has been output. Some machines may
|
||
let you get away with leaving out some of the gdb_flush, but
|
||
not all. */
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
gdb_flush (gdb_stderr);
|
||
|
||
if (source_file_name != NULL)
|
||
++source_line_number;
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
puts_unfiltered ("\n\032\032pre-");
|
||
puts_unfiltered (annotation_suffix);
|
||
puts_unfiltered ("\n");
|
||
}
|
||
|
||
/* Don't use fancy stuff if not talking to stdin. */
|
||
if (deprecated_readline_hook && input_from_terminal_p ())
|
||
{
|
||
rl = (*deprecated_readline_hook) (local_prompt);
|
||
}
|
||
else if (command_editing_p && input_from_terminal_p ())
|
||
{
|
||
rl = gdb_readline_wrapper (local_prompt);
|
||
}
|
||
else
|
||
{
|
||
rl = gdb_readline (local_prompt);
|
||
}
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
puts_unfiltered ("\n\032\032post-");
|
||
puts_unfiltered (annotation_suffix);
|
||
puts_unfiltered ("\n");
|
||
}
|
||
|
||
if (!rl || rl == (char *) EOF)
|
||
{
|
||
got_eof = 1;
|
||
break;
|
||
}
|
||
if (strlen (rl) + 1 + (p - linebuffer) > linelength)
|
||
{
|
||
linelength = strlen (rl) + 1 + (p - linebuffer);
|
||
nline = (char *) xrealloc (linebuffer, linelength);
|
||
p += nline - linebuffer;
|
||
linebuffer = nline;
|
||
}
|
||
p1 = rl;
|
||
/* Copy line. Don't copy null at end. (Leaves line alone
|
||
if this was just a newline). */
|
||
while (*p1)
|
||
*p++ = *p1++;
|
||
|
||
xfree (rl); /* Allocated in readline. */
|
||
|
||
if (p == linebuffer || *(p - 1) != '\\')
|
||
break;
|
||
|
||
p--; /* Put on top of '\'. */
|
||
local_prompt = (char *) 0;
|
||
}
|
||
|
||
#ifdef STOP_SIGNAL
|
||
if (job_control)
|
||
signal (STOP_SIGNAL, SIG_DFL);
|
||
#endif
|
||
immediate_quit--;
|
||
|
||
if (got_eof)
|
||
return NULL;
|
||
|
||
#define SERVER_COMMAND_LENGTH 7
|
||
server_command =
|
||
(p - linebuffer > SERVER_COMMAND_LENGTH)
|
||
&& strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0;
|
||
if (server_command)
|
||
{
|
||
/* Note that we don't set `line'. Between this and the check in
|
||
dont_repeat, this insures that repeating will still do the
|
||
right thing. */
|
||
*p = '\0';
|
||
return linebuffer + SERVER_COMMAND_LENGTH;
|
||
}
|
||
|
||
/* Do history expansion if that is wished. */
|
||
if (history_expansion_p && instream == stdin
|
||
&& ISATTY (instream))
|
||
{
|
||
char *history_value;
|
||
int expanded;
|
||
|
||
*p = '\0'; /* Insert null now. */
|
||
expanded = history_expand (linebuffer, &history_value);
|
||
if (expanded)
|
||
{
|
||
/* Print the changes. */
|
||
printf_unfiltered ("%s\n", history_value);
|
||
|
||
/* If there was an error, call this function again. */
|
||
if (expanded < 0)
|
||
{
|
||
xfree (history_value);
|
||
return command_line_input (prompt_arg, repeat,
|
||
annotation_suffix);
|
||
}
|
||
if (strlen (history_value) > linelength)
|
||
{
|
||
linelength = strlen (history_value) + 1;
|
||
linebuffer = (char *) xrealloc (linebuffer, linelength);
|
||
}
|
||
strcpy (linebuffer, history_value);
|
||
p = linebuffer + strlen (linebuffer);
|
||
}
|
||
xfree (history_value);
|
||
}
|
||
|
||
/* 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 saved_command_line;
|
||
for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
|
||
if (repeat && !*p1)
|
||
return saved_command_line;
|
||
|
||
*p = 0;
|
||
|
||
/* Add line to history if appropriate. */
|
||
if (instream == stdin
|
||
&& ISATTY (stdin) && *linebuffer)
|
||
add_history (linebuffer);
|
||
|
||
/* Note: lines consisting solely of comments are added to the command
|
||
history. This is useful when you type a command, and then
|
||
realize you don't want to execute it quite yet. You can comment
|
||
out the command and then later fetch it from the value history
|
||
and remove the '#'. The kill ring is probably better, but some
|
||
people are in the habit of commenting things out. */
|
||
if (*p1 == '#')
|
||
*p1 = '\0'; /* Found a comment. */
|
||
|
||
/* Save into global buffer if appropriate. */
|
||
if (repeat)
|
||
{
|
||
if (linelength > saved_command_line_size)
|
||
{
|
||
saved_command_line = xrealloc (saved_command_line, linelength);
|
||
saved_command_line_size = linelength;
|
||
}
|
||
strcpy (saved_command_line, linebuffer);
|
||
return saved_command_line;
|
||
}
|
||
|
||
return linebuffer;
|
||
}
|
||
|
||
/* Print the GDB banner. */
|
||
void
|
||
print_gdb_version (struct ui_file *stream)
|
||
{
|
||
/* From GNU coding standards, first line is meant to be easy for a
|
||
program to parse, and is just canonical program name and version
|
||
number, which starts after last space. */
|
||
|
||
fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version);
|
||
|
||
/* Second line is a copyright notice. */
|
||
|
||
fprintf_filtered (stream,
|
||
"Copyright (C) 2011 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
|
||
certain conditions, that it is covered by the GNU GPL, and that
|
||
there is no warranty. */
|
||
|
||
fprintf_filtered (stream, "\
|
||
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");
|
||
|
||
/* After the required info we print the configuration information. */
|
||
|
||
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);
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "%s", host_name);
|
||
}
|
||
fprintf_filtered (stream, "\".");
|
||
|
||
if (REPORT_BUGS_TO[0])
|
||
{
|
||
fprintf_filtered (stream,
|
||
_("\nFor bug reporting instructions, please see:\n"));
|
||
fprintf_filtered (stream, "%s.", REPORT_BUGS_TO);
|
||
}
|
||
}
|
||
|
||
|
||
/* get_prefix: access method for the GDB prefix string. */
|
||
|
||
char *
|
||
get_prefix (int level)
|
||
{
|
||
return PREFIX (level);
|
||
}
|
||
|
||
/* set_prefix: set method for the GDB prefix string. */
|
||
|
||
void
|
||
set_prefix (const char *s, int level)
|
||
{
|
||
/* If S is NULL, just free the PREFIX at level LEVEL and set to
|
||
NULL. */
|
||
if (s == NULL)
|
||
{
|
||
xfree (PREFIX (level));
|
||
PREFIX (level) = NULL;
|
||
}
|
||
else
|
||
{
|
||
char *p = xstrdup (s);
|
||
|
||
xfree (PREFIX (level));
|
||
PREFIX (level) = p;
|
||
}
|
||
}
|
||
|
||
/* get_suffix: access method for the GDB suffix string. */
|
||
|
||
char *
|
||
get_suffix (int level)
|
||
{
|
||
return SUFFIX (level);
|
||
}
|
||
|
||
/* set_suffix: set method for the GDB suffix string. */
|
||
|
||
void
|
||
set_suffix (const char *s, int level)
|
||
{
|
||
/* If S is NULL, just free the SUFFIX at level LEVEL and set to
|
||
NULL. */
|
||
if (s == NULL)
|
||
{
|
||
xfree (SUFFIX (level));
|
||
SUFFIX (level) = NULL;
|
||
}
|
||
else
|
||
{
|
||
char *p = xstrdup (s);
|
||
|
||
xfree (SUFFIX (level));
|
||
SUFFIX (level) = p;
|
||
}
|
||
}
|
||
|
||
/* get_prompt: access method for the GDB prompt string. */
|
||
|
||
char *
|
||
get_prompt (int level)
|
||
{
|
||
return PROMPT (level);
|
||
}
|
||
|
||
void
|
||
set_prompt (const char *s, int level)
|
||
{
|
||
/* If S is NULL, just free the PROMPT at level LEVEL and set to
|
||
NULL. */
|
||
if (s == NULL)
|
||
{
|
||
xfree (PROMPT (level));
|
||
PROMPT (level) = NULL;
|
||
}
|
||
else
|
||
{
|
||
char *p = xstrdup (s);
|
||
|
||
xfree (PROMPT (0));
|
||
PROMPT (0) = p;
|
||
|
||
if (level == 0)
|
||
{
|
||
/* Also, free and set new_async_prompt so prompt changes sync up
|
||
with set/show prompt. */
|
||
xfree (new_async_prompt);
|
||
new_async_prompt = xstrdup (PROMPT (0));
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
struct qt_args
|
||
{
|
||
char *args;
|
||
int from_tty;
|
||
};
|
||
|
||
/* Callback for iterate_over_inferiors. Kills or detaches the given
|
||
inferior, depending on how we originally gained control of it. */
|
||
|
||
static int
|
||
kill_or_detach (struct inferior *inf, void *args)
|
||
{
|
||
struct qt_args *qt = args;
|
||
struct thread_info *thread;
|
||
|
||
if (inf->pid == 0)
|
||
return 0;
|
||
|
||
thread = any_thread_of_process (inf->pid);
|
||
if (thread != NULL)
|
||
{
|
||
switch_to_thread (thread->ptid);
|
||
|
||
/* Leave core files alone. */
|
||
if (target_has_execution)
|
||
{
|
||
if (inf->attach_flag)
|
||
target_detach (qt->args, qt->from_tty);
|
||
else
|
||
target_kill ();
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Callback for iterate_over_inferiors. Prints info about what GDB
|
||
will do to each inferior on a "quit". ARG points to a struct
|
||
ui_out where output is to be collected. */
|
||
|
||
static int
|
||
print_inferior_quit_action (struct inferior *inf, void *arg)
|
||
{
|
||
struct ui_file *stb = arg;
|
||
|
||
if (inf->pid == 0)
|
||
return 0;
|
||
|
||
if (inf->attach_flag)
|
||
fprintf_filtered (stb,
|
||
_("\tInferior %d [%s] will be detached.\n"), inf->num,
|
||
target_pid_to_str (pid_to_ptid (inf->pid)));
|
||
else
|
||
fprintf_filtered (stb,
|
||
_("\tInferior %d [%s] will be killed.\n"), inf->num,
|
||
target_pid_to_str (pid_to_ptid (inf->pid)));
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* If necessary, make the user confirm that we should quit. Return
|
||
non-zero if we should quit, zero if we shouldn't. */
|
||
|
||
int
|
||
quit_confirm (void)
|
||
{
|
||
struct ui_file *stb;
|
||
struct cleanup *old_chain;
|
||
char *str;
|
||
int qr;
|
||
|
||
/* Don't even ask if we're only debugging a core file inferior. */
|
||
if (!have_live_inferiors ())
|
||
return 1;
|
||
|
||
/* Build the query string as a single string. */
|
||
stb = mem_fileopen ();
|
||
old_chain = make_cleanup_ui_file_delete (stb);
|
||
|
||
/* This is something of a hack. But there's no reliable way to see
|
||
if a GUI is running. The `use_windows' variable doesn't cut
|
||
it. */
|
||
if (deprecated_init_ui_hook)
|
||
fprintf_filtered (stb, _("A debugging session is active.\n"
|
||
"Do you still want to close the debugger?"));
|
||
else
|
||
{
|
||
fprintf_filtered (stb, _("A debugging session is active.\n\n"));
|
||
iterate_over_inferiors (print_inferior_quit_action, stb);
|
||
fprintf_filtered (stb, _("\nQuit anyway? "));
|
||
}
|
||
|
||
str = ui_file_xstrdup (stb, NULL);
|
||
make_cleanup (xfree, str);
|
||
|
||
qr = query ("%s", str);
|
||
do_cleanups (old_chain);
|
||
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
|
||
quit_force (char *args, int from_tty)
|
||
{
|
||
int exit_code = 0;
|
||
struct qt_args qt;
|
||
|
||
/* An optional expression may be used to cause gdb to terminate with the
|
||
value of that expression. */
|
||
if (args)
|
||
{
|
||
struct value *val = parse_and_eval (args);
|
||
|
||
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;
|
||
|
||
/* We want to handle any quit errors and exit regardless. */
|
||
catch_errors (quit_target, &qt,
|
||
"Quitting: ", RETURN_MASK_ALL);
|
||
|
||
exit (exit_code);
|
||
}
|
||
|
||
/* Returns whether GDB is running on a terminal and input is
|
||
currently coming from that terminal. */
|
||
|
||
int
|
||
input_from_terminal_p (void)
|
||
{
|
||
if (batch_flag)
|
||
return 0;
|
||
|
||
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;
|
||
}
|
||
|
||
static void
|
||
dont_repeat_command (char *ignored, int from_tty)
|
||
{
|
||
/* Can't call dont_repeat here because we're not necessarily reading
|
||
from stdin. */
|
||
*saved_command_line = 0;
|
||
}
|
||
|
||
/* Functions to manipulate command line editing control variables. */
|
||
|
||
/* Number of commands to print in each call to show_commands. */
|
||
#define Hist_print 10
|
||
void
|
||
show_commands (char *args, int from_tty)
|
||
{
|
||
/* Index for history commands. Relative to history_base. */
|
||
int offset;
|
||
|
||
/* Number of the history entry which we are planning to display next.
|
||
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)
|
||
{
|
||
if (args[0] == '+' && args[1] == '\0')
|
||
/* "info editing +" should print from the stored position. */
|
||
;
|
||
else
|
||
/* "info editing <exp>" should print around command number <exp>. */
|
||
num = (parse_and_eval_long (args) - history_base) - Hist_print / 2;
|
||
}
|
||
/* "show commands" means print the last Hist_print commands. */
|
||
else
|
||
{
|
||
num = hist_len - Hist_print;
|
||
}
|
||
|
||
if (num < 0)
|
||
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)
|
||
{
|
||
num = hist_len - Hist_print;
|
||
if (num < 0)
|
||
num = 0;
|
||
}
|
||
|
||
for (offset = num; offset < num + Hist_print && offset < hist_len; offset++)
|
||
{
|
||
printf_filtered ("%5d %s\n", history_base + offset,
|
||
(history_get (history_base + offset))->line);
|
||
}
|
||
|
||
/* The next command we want to display is the next one that we haven't
|
||
displayed yet. */
|
||
num += Hist_print;
|
||
|
||
/* If the user repeats this command with return, it should do what
|
||
"show commands +" does. This is unnecessary if arg is null,
|
||
because "show commands +" is not useful after "show commands". */
|
||
if (from_tty && args)
|
||
{
|
||
args[0] = '+';
|
||
args[1] = '\0';
|
||
}
|
||
}
|
||
|
||
/* Called by do_setshow_command. */
|
||
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
|
||
{
|
||
history_size = INT_MAX;
|
||
error (_("History size must be non-negative"));
|
||
}
|
||
}
|
||
|
||
void
|
||
set_history (char *args, int from_tty)
|
||
{
|
||
printf_unfiltered (_("\"set history\" must be followed "
|
||
"by the name of a history subcommand.\n"));
|
||
help_list (sethistlist, "set history ", -1, gdb_stdout);
|
||
}
|
||
|
||
void
|
||
show_history (char *args, int from_tty)
|
||
{
|
||
cmd_show_list (showhistlist, from_tty, "");
|
||
}
|
||
|
||
int info_verbose = 0; /* Default verbose msgs off. */
|
||
|
||
/* Called by do_setshow_command. An elaborate joke. */
|
||
void
|
||
set_verbose (char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
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)
|
||
{
|
||
c->doc = "Set verbose printing of informational messages.";
|
||
showcmd->doc = "Show verbose printing of informational messages.";
|
||
}
|
||
else
|
||
{
|
||
c->doc = "Set verbosity.";
|
||
showcmd->doc = "Show verbosity.";
|
||
}
|
||
}
|
||
|
||
/* Init the history buffer. Note that we are called after the init file(s)
|
||
have been read so that the user can change the history file via his
|
||
.gdbinit file (for instance). The GDBHISTFILE environment variable
|
||
overrides all of this. */
|
||
|
||
void
|
||
init_history (void)
|
||
{
|
||
char *tmpenv;
|
||
|
||
tmpenv = getenv ("HISTSIZE");
|
||
if (tmpenv)
|
||
history_size = atoi (tmpenv);
|
||
else if (!history_size)
|
||
history_size = 256;
|
||
|
||
stifle_history (history_size);
|
||
|
||
tmpenv = getenv ("GDBHISTFILE");
|
||
if (tmpenv)
|
||
history_filename = xstrdup (tmpenv);
|
||
else if (!history_filename)
|
||
{
|
||
/* We include the current directory so that if the user changes
|
||
directories the file written will be the same as the one
|
||
that was read. */
|
||
#ifdef __MSDOS__
|
||
/* No leading dots in file names are allowed on MSDOS. */
|
||
history_filename = concat (current_directory, "/_gdb_history",
|
||
(char *)NULL);
|
||
#else
|
||
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)
|
||
{
|
||
/* initialize the prompt stack to a simple "(gdb) " prompt or to
|
||
whatever the DEFAULT_PROMPT is. */
|
||
the_prompts.top = 0;
|
||
PREFIX (0) = "";
|
||
set_prompt (DEFAULT_PROMPT, 0);
|
||
SUFFIX (0) = "";
|
||
/* Set things up for annotation_level > 1, if the user ever decides
|
||
to use it. */
|
||
async_annotation_suffix = "prompt";
|
||
|
||
/* 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;
|
||
history_expansion_p = 0;
|
||
write_history_p = 0;
|
||
|
||
/* Setup important stuff for command line editing. */
|
||
rl_completion_word_break_hook = gdb_completion_word_break_characters;
|
||
rl_completion_entry_function = readline_line_completion_function;
|
||
rl_completer_word_break_characters = default_word_break_characters ();
|
||
rl_completer_quote_characters = get_gdb_completer_quote_characters ();
|
||
rl_readline_name = "gdb";
|
||
rl_terminal_name = getenv ("TERM");
|
||
|
||
/* The name for this defun comes from Bash, where it originated.
|
||
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);
|
||
|
||
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.\nPrimarily \
|
||
used inside of user-defined commands that should not be repeated when\n\
|
||
hitting return."));
|
||
|
||
add_setshow_boolean_cmd ("editing", class_support,
|
||
&async_command_editing_p, _("\
|
||
Set editing of command lines as they are typed."), _("\
|
||
Show editing of command lines as they are typed."), _("\
|
||
Use \"on\" to enable the editing, and \"off\" to disable it.\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,
|
||
show_async_command_editing_p,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\
|
||
Set saving of the history record on exit."), _("\
|
||
Show saving of the history record on exit."), _("\
|
||
Use \"on\" to enable the saving, and \"off\" to disable it.\n\
|
||
Without an argument, saving is enabled."),
|
||
NULL,
|
||
show_write_history_p,
|
||
&sethistlist, &showhistlist);
|
||
|
||
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);
|
||
|
||
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,
|
||
show_caution,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\
|
||
Set 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,
|
||
show_annotation_level,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("exec-done-display", class_support,
|
||
&exec_done_display_p, _("\
|
||
Set notification of completion for asynchronous execution commands."), _("\
|
||
Show notification of completion for asynchronous execution commands."), _("\
|
||
Use \"on\" to enable the notification, and \"off\" to disable it."),
|
||
NULL,
|
||
show_exec_done_display_p,
|
||
&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,
|
||
&setlist,
|
||
&showlist);
|
||
}
|
||
|
||
void
|
||
gdb_init (char *argv0)
|
||
{
|
||
if (pre_init_ui_hook)
|
||
pre_init_ui_hook ();
|
||
|
||
/* Run the init function of each source file. */
|
||
|
||
#ifdef __MSDOS__
|
||
/* Make sure we return to the original directory upon exit, come
|
||
what may, since the OS doesn't do that for us. */
|
||
make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory));
|
||
#endif
|
||
|
||
init_cmd_lists (); /* This needs to be done first. */
|
||
initialize_targets (); /* Setup target_terminal macros for utils.c. */
|
||
initialize_utils (); /* Make errors and warnings possible. */
|
||
|
||
/* Here is where we call all the _initialize_foo routines. */
|
||
initialize_all_files ();
|
||
|
||
/* This creates the current_program_space. Do this after all the
|
||
_initialize_foo routines have had a chance to install their
|
||
per-sspace data keys. Also do this before
|
||
initialize_current_architecture is called, because it accesses
|
||
exec_bfd of the current program space. */
|
||
initialize_progspace ();
|
||
initialize_inferiors ();
|
||
initialize_current_architecture ();
|
||
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 "set width 0" won't fail if no language is explicitly
|
||
set in a config file or implicitly set by reading an executable
|
||
during startup. */
|
||
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,
|
||
and it wants GDB to revert to the CLI, it should clear
|
||
deprecated_init_ui_hook. */
|
||
if (deprecated_init_ui_hook)
|
||
deprecated_init_ui_hook (argv0);
|
||
|
||
#ifdef HAVE_PYTHON
|
||
/* Python initialization can require various commands to be
|
||
installed. For example "info pretty-printer" needs the "info"
|
||
prefix to be installed. Keep things simple and just do final
|
||
python initialization here. */
|
||
finish_python_initialization ();
|
||
#endif
|
||
}
|