/* Top level stuff for GDB, the GNU debugger.
- Copyright 1999 Free Software Foundation, Inc.
+ Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
This file is part of GDB.
#include "defs.h"
#include "top.h"
#include "inferior.h"
+#include "target.h"
#include "terminal.h" /* for job_control */
-#include "signals.h"
#include "event-loop.h"
#include "event-top.h"
+#include "interps.h"
+#include <signal.h>
/* For dont_repeat() */
#include "gdbcmd.h"
#include <readline/readline.h>
#include <readline/history.h>
-#include <signal.h>
-
/* readline defines this. */
#undef savestring
-extern void _initialize_event_loop (void);
-
static void rl_callback_read_char_wrapper (gdb_client_data client_data);
static void command_line_handler (char *rl);
static void command_line_handler_continuation (struct continuation_arg *arg);
static void change_line_handler (void);
static void change_annotation_level (void);
static void command_handler (char *command);
-void cli_command_loop (void);
static void async_do_nothing (gdb_client_data arg);
static void async_disconnect (gdb_client_data arg);
static void async_stop_sig (gdb_client_data arg);
handlers mark these functions as ready to be executed and the event
loop, in a later iteration, calls them. See the function
invoke_async_signal_handler. */
-PTR sigint_token;
+void *sigint_token;
#ifdef SIGHUP
-PTR sighup_token;
+void *sighup_token;
#endif
-PTR sigquit_token;
-PTR sigfpe_token;
+void *sigquit_token;
+void *sigfpe_token;
#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
-PTR sigwinch_token;
+void *sigwinch_token;
#endif
#ifdef STOP_SIGNAL
-PTR sigtstp_token;
+void *sigtstp_token;
#endif
/* Structure to save a partially entered command. This is used when
char *linebuffer_ptr;
}
readline_input_state;
+
+/* This hook is called by rl_callback_read_char_wrapper after each
+ character is processed. */
+void (*after_char_processing_hook) ();
\f
-/* Wrapper function foe calling into the readline library. The event
+/* Wrapper function for calling into the readline library. The event
loop expects the callback function to have a paramter, while readline
expects none. */
static void
rl_callback_read_char_wrapper (gdb_client_data client_data)
{
rl_callback_read_char ();
+ if (after_char_processing_hook)
+ (*after_char_processing_hook) ();
}
/* Initialize all the necessary variables, start the event loop,
int prompt_length = 0;
char *gdb_prompt = get_prompt ();
+ /* Each interpreter has its own rules on displaying the command
+ prompt. */
+ if (!current_interp_display_prompt_p ())
+ return;
if (target_executing && sync_execution)
{
character position to be off, since the newline we read from
the user is not accounted for. */
fputs_unfiltered (new_prompt, gdb_stdout);
-
-#ifdef MPW
- /* Move to a new line so the entered line doesn't have a prompt
- on the front of it. */
- fputs_unfiltered ("\n", gdb_stdout);
-#endif /* MPW */
gdb_flush (gdb_stdout);
}
}
in effect, until the user does another 'set prompt'. */
if (strcmp (PROMPT (0), PROMPT (-1)))
{
- free (PROMPT (-1));
+ xfree (PROMPT (-1));
PROMPT (-1) = savestring (PROMPT (0), strlen (PROMPT (0)));
}
- free (PREFIX (0));
- free (PROMPT (0));
- free (SUFFIX (0));
+ xfree (PREFIX (0));
+ xfree (PROMPT (0));
+ xfree (SUFFIX (0));
the_prompts.top--;
}
delete_file_handler (input_fd);
discard_all_continuations ();
/* If stdin died, we may as well kill gdb. */
- exit (1);
+ quit_command ((char *) 0, stdin == instream);
}
else
(*call_readline) (client_data);
extern int display_time;
extern int display_space;
-#if defined(TUI)
- extern int insert_mode;
-#endif
-
quit_flag = 0;
if (instream == stdin && stdin_is_tty)
reinitialize_more_filter ();
- old_chain = make_cleanup ((make_cleanup_func) command_loop_marker, 0);
+ old_chain = make_cleanup (null_cleanup, 0);
-#if defined(TUI)
- insert_mode = 0;
-#endif
/* If readline returned a NULL command, it means that the
connection with the terminal is gone. This happens at the
end of a testsuite run, after Expect has hung up
if (display_space)
{
#ifdef HAVE_SBRK
- extern char **environ;
char *lim = (char *) sbrk (0);
-
- space_at_cmd_start = (long) (lim - (char *) &environ);
+ space_at_cmd_start = lim - lim_at_start;
#endif
}
execute_command (command, instream == stdin);
/* Set things up for this function to be compete later, once the
- executin has completed, if we are doing an execution command,
+ execution has completed, if we are doing an execution command,
otherwise, just go ahead and finish. */
if (target_can_async_p () && target_executing)
{
(struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
arg1->next = arg2;
arg2->next = NULL;
- arg1->data = (PTR) time_at_cmd_start;
- arg2->data = (PTR) space_at_cmd_start;
+ arg1->data.longint = time_at_cmd_start;
+#ifdef HAVE_SBRK
+ arg2->data.longint = space_at_cmd_start;
+#endif
add_continuation (command_line_handler_continuation, arg1);
}
if (display_space)
{
#ifdef HAVE_SBRK
- extern char **environ;
char *lim = (char *) sbrk (0);
- long space_now = lim - (char *) &environ;
+ long space_now = lim - lim_at_start;
long space_diff = space_now - space_at_cmd_start;
printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
extern int display_time;
extern int display_space;
- long time_at_cmd_start = (long) arg->data;
- long space_at_cmd_start = (long) arg->next->data;
+ long time_at_cmd_start = arg->data.longint;
+ long space_at_cmd_start = arg->next->data.longint;
bpstat_do_actions (&stop_bpstat);
/*do_cleanups (old_chain); *//*?????FIXME????? */
if (display_space)
{
#ifdef HAVE_SBRK
- extern char **environ;
char *lim = (char *) sbrk (0);
- long space_now = lim - (char *) &environ;
+ long space_now = lim - lim_at_start;
long space_diff = space_now - space_at_cmd_start;
printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
{
static char *linebuffer = 0;
static unsigned linelength = 0;
- register char *p;
+ char *p;
char *p1;
extern char *line;
extern int linesize;
if (annotation_level > 1 && instream == stdin)
{
printf_unfiltered ("\n\032\032post-");
- printf_unfiltered (async_annotation_suffix);
+ puts_unfiltered (async_annotation_suffix);
printf_unfiltered ("\n");
}
{
strcpy (linebuffer, readline_input_state.linebuffer);
p = readline_input_state.linebuffer_ptr;
- free (readline_input_state.linebuffer);
+ xfree (readline_input_state.linebuffer);
more_to_come = 0;
pop_prompt ();
}
while (*p1)
*p++ = *p1++;
- free (rl); /* Allocated in readline. */
+ xfree (rl); /* Allocated in readline. */
- if (*(p - 1) == '\\')
+ if (p > linebuffer && *(p - 1) == '\\')
{
p--; /* Put on top of '\'. */
- if (*p == '\\')
- {
- readline_input_state.linebuffer = savestring (linebuffer,
- strlen (linebuffer));
- readline_input_state.linebuffer_ptr = p;
-
- /* We will not invoke a execute_command if there is more
- input expected to complete the command. So, we need to
- print an empty prompt here. */
- more_to_come = 1;
- push_prompt ("", "", "");
- display_gdb_prompt (0);
- return;
- }
+ readline_input_state.linebuffer = savestring (linebuffer,
+ strlen (linebuffer));
+ readline_input_state.linebuffer_ptr = p;
+
+ /* We will not invoke a execute_command if there is more
+ input expected to complete the command. So, we need to
+ print an empty prompt here. */
+ more_to_come = 1;
+ push_prompt ("", "", "");
+ display_gdb_prompt (0);
+ return;
}
#ifdef STOP_SIGNAL
/* If there was an error, call this function again. */
if (expanded < 0)
{
- free (history_value);
+ xfree (history_value);
return;
}
if (strlen (history_value) > linelength)
}
strcpy (linebuffer, history_value);
p = linebuffer + strlen (linebuffer);
- free (history_value);
+ xfree (history_value);
}
}
if we are called again fgetc will still return EOF and
we'll return NULL then. */
break;
- free (result);
+ xfree (result);
(*input_handler) (0);
}
}
void
-mark_async_signal_handler_wrapper (PTR token)
+mark_async_signal_handler_wrapper (void *token)
{
mark_async_signal_handler ((struct async_signal_handler *) token);
}
/* Tell the event loop what to do if SIGHUP is received.
See event-signal.c. */
static void
-handle_sighup (sig)
- int sig;
+handle_sighup (int sig)
{
mark_async_signal_handler_wrapper (sighup_token);
signal (sig, handle_sighup);
#if HAVE_SIGPROCMASK
{
sigset_t zero;
+
sigemptyset (&zero);
sigprocmask (SIG_SETMASK, &zero, 0);
}
-#else
+#elif HAVE_SIGSETMASK
sigsetmask (0);
#endif
kill (getpid (), SIGTSTP);
\f
/* Called by do_setshow_command. */
-/* ARGSUSED */
void
set_async_editing_command (char *args, int from_tty, struct cmd_list_element *c)
{
}
/* Called by do_setshow_command. */
-/* ARGSUSED */
void
set_async_annotation_level (char *args, int from_tty, struct cmd_list_element *c)
{
}
/* Called by do_setshow_command. */
-/* ARGSUSED */
void
set_async_prompt (char *args, int from_tty, struct cmd_list_element *c)
{
interface, i.e. via a callback function (rl_callback_read_char),
and hook up instream to the event loop. */
void
-_initialize_event_loop (void)
+gdb_setup_readline (void)
{
+ /* This function is a noop for the sync case. The assumption is that
+ the sync setup is ALL done in gdb_init, and we would only mess it up
+ here. The sync stuff should really go away over time. */
+
if (event_loop_p)
{
- /* When a character is detected on instream by select or poll,
- readline will be invoked via this callback function. */
- call_readline = rl_callback_read_char_wrapper;
+ gdb_stdout = stdio_fileopen (stdout);
+ gdb_stderr = stdio_fileopen (stderr);
+ gdb_stdlog = gdb_stderr; /* for moment */
+ gdb_stdtarg = gdb_stderr; /* for moment */
+
+ /* If the input stream is connected to a terminal, turn on
+ editing. */
+ if (ISATTY (instream))
+ {
+ /* Tell gdb that we will be using the readline library. This
+ could be overwritten by a command in .gdbinit like 'set
+ editing on' or 'off'. */
+ async_command_editing_p = 1;
+
+ /* When a character is detected on instream by select or
+ poll, readline will be invoked via this callback
+ function. */
+ call_readline = rl_callback_read_char_wrapper;
+ }
+ else
+ {
+ async_command_editing_p = 0;
+ call_readline = gdb_readline2;
+ }
/* When readline has read an end-of-line character, it passes
the complete line to gdb for processing. command_line_handler
register it with the event loop. */
input_fd = fileno (instream);
- /* Tell gdb to use the cli_command_loop as the main loop. */
- command_loop_hook = cli_command_loop;
-
/* Now we need to create the event sources for the input file
descriptor. */
/* At this point in time, this is the only event source that we
only when it actually exists (I.e. after we say 'run' or
after we connect to a remote target. */
add_file_handler (input_fd, stdin_event_handler, 0);
+ }
+}
- /* Tell gdb that we will be using the readline library. This
- could be overwritten by a command in .gdbinit like 'set
- editing on' or 'off'. */
- async_command_editing_p = 1;
+/* Disable command input through the standard CLI channels. Used in
+ the suspend proc for interpreters that use the standard gdb readline
+ interface, like the cli & the mi. */
+void
+gdb_disable_readline (void)
+{
+ if (event_loop_p)
+ {
+ /* FIXME - It is too heavyweight to delete and remake these
+ every time you run an interpreter that needs readline.
+ It is probably better to have the interpreters cache these,
+ which in turn means that this needs to be moved into interpreter
+ specific code. */
+
+#if 0
+ ui_file_delete (gdb_stdout);
+ ui_file_delete (gdb_stderr);
+ gdb_stdlog = NULL;
+ gdb_stdtarg = NULL;
+#endif
+
+ rl_callback_handler_remove ();
+ delete_file_handler (input_fd);
}
}
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