/* Top level stuff for GDB, the GNU debugger.
- Copyright 1986-2000 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001 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 "symtab.h"
#include "inferior.h"
-#include "signals.h"
+#include <signal.h>
#include "target.h"
#include "breakpoint.h"
#include "gdbtypes.h"
#include "completer.h"
#include "top.h"
#include "version.h"
+#include "serial.h"
+#include "doublest.h"
+#include "gdb_assert.h"
/* readline include files */
#include <readline/readline.h>
#include "cli-out.h"
#endif
-/* From completer.c */
-
-extern int is_complete_command (void (*func) (char *args, int from_tty));
-
-/* From cli/cli-cmds.c */
-
-extern void init_cmd_lists (void);
-
-extern void init_cli_cmds (void);
-
-extern void execute_user_command (struct cmd_list_element *c, char *args);
-
-/* From cli/cli-setshow.c */
-
-extern void do_setshow_command (char *, int, struct cmd_list_element *);
-
-/* Exported to CLI cli/cli-cmds.c. */
-
-void set_verbose (char *, int, struct cmd_list_element *);
-
-void show_history (char *, int);
-
-void set_history (char *, int);
-
-void show_commands (char *, int);
-
-void do_restore_instream_cleanup (void *stream);
-
-/* Prototypes for local functions */
-
-static void dont_repeat_command (char *, int);
-
-static void init_signals (void);
-
-#ifdef STOP_SIGNAL
-static void stop_sig (int);
-#endif
-
-static char *readline_line_completion_function (char *, int);
-
-static void init_main (void);
-
-static void float_handler (int);
-
-static void init_signals (void);
-
-static void set_history_size_command (char *, int, struct cmd_list_element *);
-
-static void do_nothing (int);
-
-#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 (PTR);
-
-static void disconnect (int);
-#endif
-
/* Default command line prompt. This is overriden in some configs. */
#ifndef DEFAULT_PROMPT
/* gdb prints this when reading a command interactively */
static char *gdb_prompt_string; /* the global prompt string */
-extern char *get_prompt (void); /* access function for prompt string */
/* Buffer used for reading command lines, and the size
allocated for it so far. */
/* Level of control structure. */
static int control_level;
-/* Structure for arguments to user defined functions. */
-#define MAXUSERARGS 10
-struct user_args
- {
- struct user_args *next;
- struct
- {
- char *arg;
- int len;
- }
- a[MAXUSERARGS];
- int count;
- }
- *user_args;
-
/* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
#ifndef STOP_SIGNAL
#endif
#endif
-/* Some System V have job control but not sigsetmask(). */
-#if !defined (HAVE_SIGSETMASK)
-#if !defined (USG)
-#define HAVE_SIGSETMASK 1
-#else
-#define HAVE_SIGSETMASK 0
-#endif
-#endif
-
-#if 0 == (HAVE_SIGSETMASK)
-#define sigsetmask(n)
-#endif
-
/* Hooks for alternate command interfaces. */
/* Called after most modules have been initialized, but before taking users
/* Called when going to wait for the target. Usually allows the GUI to run
while waiting for target events. */
-int (*target_wait_hook) (int pid, struct target_waitstatus * status);
+ptid_t (*target_wait_hook) (ptid_t ptid,
+ struct target_waitstatus * status);
/* Used by UI as a wrapper around command execution. May do various things
like enabling/disabling buttons, etc... */
directly. */
#if defined(HAVE_SIGSETJMP)
#define SIGJMP_BUF sigjmp_buf
-#define SIGSETJMP(buf) sigsetjmp(buf, 1)
-#define SIGLONGJMP(buf,val) siglongjmp(buf,val)
+#define SIGSETJMP(buf) sigsetjmp((buf), 1)
+#define SIGLONGJMP(buf,val) siglongjmp((buf), (val))
#else
#define SIGJMP_BUF jmp_buf
#define SIGSETJMP(buf) setjmp(buf)
-#define SIGLONGJMP(buf,val) longjmp(buf,val)
+#define SIGLONGJMP(buf,val) longjmp((buf), (val))
#endif
/* Where to go for return_to_top_level. */
(NORETURN void) SIGLONGJMP (*catch_return, (int) reason);
}
-/* Call FUNC with arg ARGS, catching any errors. If there is no
- error, return the value returned by FUNC. If there is an error,
- print ERRSTRING, print the specific error message, then return
- zero.
+/* Call FUNC() with args FUNC_UIOUT and FUNC_ARGS, catching any
+ errors. Set FUNC_CAUGHT to an ``enum return_reason'' if the
+ function is aborted (using return_to_top_level() or zero if the
+ function returns normally. Set FUNC_VAL to the value returned by
+ the function or 0 if the function was aborted.
Must not be called with immediate_quit in effect (bad things might
happen, say we got a signal in the middle of a memcpy to quit_return).
be consolidated into a single file instead of being distributed
between utils.c and top.c? */
-int
-catch_errors (catch_errors_ftype *func, PTR args, char *errstring,
- return_mask mask)
+static void
+catcher (catch_exceptions_ftype *func,
+ struct ui_out *func_uiout,
+ void *func_args,
+ int *func_val,
+ enum return_reason *func_caught,
+ char *errstring,
+ return_mask mask)
{
SIGJMP_BUF *saved_catch;
SIGJMP_BUF catch;
- int val;
struct cleanup *saved_cleanup_chain;
char *saved_error_pre_print;
char *saved_quit_pre_print;
+ struct ui_out *saved_uiout;
/* Return value from SIGSETJMP(): enum return_reason if error or
quit caught, 0 otherwise. */
int caught;
+ /* Return value from FUNC(): Hopefully non-zero. Explicitly set to
+ zero if an error quit was caught. */
+ int val;
+
/* Override error/quit messages during FUNC. */
saved_error_pre_print = error_pre_print;
if (mask & RETURN_MASK_QUIT)
quit_pre_print = errstring;
+ /* Override the global ``struct ui_out'' builder. */
+
+ saved_uiout = uiout;
+ uiout = func_uiout;
+
/* Prevent error/quit during FUNC from calling cleanups established
prior to here. */
catch_return = &catch;
caught = SIGSETJMP (catch);
if (!caught)
- val = (*func) (args);
+ val = (*func) (func_uiout, func_args);
else
val = 0;
catch_return = saved_catch;
do_cleanups call (to cover the problem) or an assertion check to
detect bad FUNCs code. */
- /* Restore the cleanup chain and error/quit messages to their
- original states. */
+ /* Restore the cleanup chain, the error/quit messages, and the uiout
+ builder, to their original states. */
restore_cleanups (saved_cleanup_chain);
+ uiout = saved_uiout;
+
if (mask & RETURN_MASK_QUIT)
quit_pre_print = saved_quit_pre_print;
if (mask & RETURN_MASK_ERROR)
error_pre_print = saved_error_pre_print;
- /* Return normally if no error/quit event occurred. */
+ /* Return normally if no error/quit event occurred or this catcher
+ can handle this exception. The caller analyses the func return
+ values. */
- if (!caught)
- return val;
+ if (!caught || (mask & RETURN_MASK (caught)))
+ {
+ *func_val = val;
+ *func_caught = caught;
+ return;
+ }
- /* If the caller didn't request that the event be caught, relay the
+ /* The caller didn't request that the event be caught, relay the
event to the next containing catch_errors(). */
- if (!(mask & RETURN_MASK (caught)))
- return_to_top_level (caught);
-
- /* Tell the caller that an event was caught.
-
- FIXME: nsd/2000-02-22: When MASK is RETURN_MASK_ALL, the caller
- can't tell what type of event occurred.
+ return_to_top_level (caught);
+}
- A possible fix is to add a new interface, catch_event(), that
- returns enum return_reason after catching an error or a quit.
+int
+catch_exceptions (struct ui_out *uiout,
+ catch_exceptions_ftype *func,
+ void *func_args,
+ char *errstring,
+ return_mask mask)
+{
+ int val;
+ enum return_reason caught;
+ catcher (func, uiout, func_args, &val, &caught, errstring, mask);
+ gdb_assert (val >= 0);
+ gdb_assert (caught <= 0);
+ if (caught < 0)
+ return caught;
+ return val;
+}
- When returning normally, i.e. without catching an error or a
- quit, catch_event() could return RETURN_NORMAL, which would be
- added to enum return_reason. FUNC would return information
- exclusively via ARGS.
+struct catch_errors_args
+{
+ catch_errors_ftype *func;
+ void *func_args;
+};
- Alternatively, normal catch_event() could return FUNC's return
- value. The caller would need to be aware of potential overlap
- with enum return_reason, which could be publicly restricted to
- negative values to simplify return value processing in FUNC and
- in the caller. */
+int
+do_catch_errors (struct ui_out *uiout, void *data)
+{
+ struct catch_errors_args *args = data;
+ return args->func (args->func_args);
+}
- return 0;
+int
+catch_errors (catch_errors_ftype *func, void *func_args, char *errstring,
+ return_mask mask)
+{
+ int val;
+ enum return_reason caught;
+ struct catch_errors_args args;
+ args.func = func;
+ args.func_args = func_args;
+ catcher (do_catch_errors, uiout, &args, &val, &caught, errstring, mask);
+ if (caught != 0)
+ return 0;
+ return val;
}
struct captured_command_args
/* Handler for SIGHUP. */
#ifdef SIGHUP
-static void
-disconnect (int signo)
-{
- catch_errors (quit_cover, NULL,
- "Could not kill the program being debugged", RETURN_MASK_ALL);
- signal (SIGHUP, SIG_DFL);
- kill (getpid (), SIGHUP);
-}
-
/* Just a little helper function for disconnect(). */
/* 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 (PTR s)
+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;
}
+
+static void
+disconnect (int signo)
+{
+ catch_errors (quit_cover, NULL,
+ "Could not kill the program being debugged", RETURN_MASK_ALL);
+ signal (SIGHUP, SIG_DFL);
+ kill (getpid (), SIGHUP);
+}
#endif /* defined SIGHUP */
\f
/* Line number we are currently in in a file which is being sourced. */
do_cleanups (cleanups);
}
\f
-extern void init_proc (void);
-
void (*pre_init_ui_hook) (void);
#ifdef __MSDOS__
}
#endif
-void
-gdb_init (char *argv0)
-{
- if (pre_init_ui_hook)
- pre_init_ui_hook ();
-
- /* Run the init function of each source file */
-
- getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
- current_directory = gdb_dirbuf;
-
-#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 */
- initialize_all_files ();
- initialize_current_architecture ();
- init_cli_cmds();
- init_main (); /* But that omits this file! Do it now */
-
- /* The signal handling mechanism is different depending whether or
- not the async version is run. NOTE: in the future we plan to make
- the event loop be the default engine of gdb, and this difference
- will disappear. */
- if (event_loop_p)
- async_init_signals ();
- else
- 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. */
-
-#ifdef UI_OUT
- /* Install the default UI */
- uiout = cli_out_new (gdb_stdout);
-#endif
-
-#ifdef UI_OUT
- /* All the interpreters should have had a look at things by now.
- Initialize the selected interpreter. */
- if (interpreter_p && !init_ui_hook)
- {
- fprintf_unfiltered (gdb_stderr, "Interpreter `%s' unrecognized.\n",
- interpreter_p);
- exit (1);
- }
-#endif
-
- if (init_ui_hook)
- init_ui_hook (argv0);
-}
-
/* Execute the line P as a command.
Pass FROM_TTY as second argument to the defining function. */
register enum language flang;
static int warned = 0;
char *line;
- /* FIXME: These should really be in an appropriate header file */
-extern void serial_log_command (const char *);
-
+
free_all_values ();
/* Force cleanup of any alloca areas if using C alloca instead of
while (instream && !feof (instream))
{
-#if defined(TUI)
- extern int insert_mode;
-#endif
if (window_hook && instream == stdin)
(*window_hook) (instream, get_prompt ());
reinitialize_more_filter ();
old_chain = make_cleanup (null_cleanup, 0);
-#if defined(TUI)
- /* A bit of paranoia: I want to make sure the "insert_mode" global
- * is clear except when it is being used for command-line editing
- * (see tuiIO.c, utils.c); otherwise normal output will
- * get messed up in the TUI. So clear it before/after
- * the command-line-input call. - RT
- */
- insert_mode = 0;
-#endif
/* Get a command-line. This calls the readline package. */
command = command_line_input (instream == stdin ?
get_prompt () : (char *) NULL,
instream == stdin, "prompt");
-#if defined(TUI)
- insert_mode = 0;
-#endif
if (command == 0)
return;
character position to be off, since the newline we read from
the user is not accounted for. */
fputs_unfiltered (prompt_arg, 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 */
+ /* OBSOLETE #ifdef MPW */
+ /* OBSOLETE Move to a new line so the entered line doesn't have a prompt */
+ /* OBSOLETE on the front of it. */
+ /* OBSOLETE fputs_unfiltered ("\n", gdb_stdout); */
+ /* OBSOLETE #endif *//* MPW */
gdb_flush (gdb_stdout);
}
static int history_size;
static char *history_filename;
-/* Functions that are used as part of the fancy command line editing. */
-
-/* This can be used for functions which don't want to complete on symbols
- but don't want to complete on anything else either. */
-/* ARGSUSED */
-char **
-noop_completer (char *text, char *prefix)
-{
- return NULL;
-}
-
-/* Line completion interface function for readline. */
-
-static char *
-readline_line_completion_function (char *text, int matches)
-{
- return line_completion_function (text, matches, rl_line_buffer, rl_point);
-}
\f
#ifdef STOP_SIGNAL
static void
{
#if STOP_SIGNAL == SIGTSTP
signal (SIGTSTP, SIG_DFL);
+#if HAVE_SIGPROCMASK
+ {
+ sigset_t zero;
+
+ sigemptyset (&zero);
+ sigprocmask (SIG_SETMASK, &zero, 0);
+ }
+#elif HAVE_SIGSETMASK
sigsetmask (0);
+#endif
kill (getpid (), SIGTSTP);
signal (SIGTSTP, stop_sig);
#else
#endif /* STOP_SIGNAL */
/* Initialize signal handlers. */
+static void
+float_handler (int signo)
+{
+ /* This message is based on ANSI C, section 4.7. Note that integer
+ divide by zero causes this, so "float" is a misnomer. */
+ signal (SIGFPE, float_handler);
+ error ("Erroneous arithmetic operation.");
+}
+
static void
do_nothing (int signo)
{
program to parse, and is just canonical program name and version
number, which starts after last space. */
-#ifdef MI_OUT
- /* Print it console style until a format is defined */
- fprintf_filtered (stream, "GNU gdb %s (MI_OUT)\n", version);
-#else
fprintf_filtered (stream, "GNU gdb %s\n", version);
-#endif
/* Second line is a copyright notice. */
break;
case TYPE_CODE_PTR:
elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
- addrval = value_as_pointer (arg_val);
+ addrval = value_as_address (arg_val);
if (TYPE_LENGTH (elt_type) == 1 &&
TYPE_CODE (elt_type) == TYPE_CODE_INT &&
int
quit_confirm (void)
{
- if (inferior_pid != 0 && target_has_execution)
+ if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
{
char *s;
exit_code = (int) value_as_long (val);
}
- if (inferior_pid != 0 && target_has_execution)
+ if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
{
if (attach_flag)
target_detach (args, from_tty);
do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */
-#if defined(TUI)
- /* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */
- /* The above does not need to be inside a tuiDo(), since
- * it is not manipulating the curses screen, but rather,
- * it is tearing it down.
- */
- if (tui_version)
- tuiCleanUp ();
-#endif
-
exit (exit_code);
}
than the number of the last command). Relative to history_base. */
int hist_len;
-extern HIST_ENTRY *history_get (int);
-
/* Print out some of the commands from the command history. */
/* First determine the length of the history list. */
hist_len = history_size;
}
}
-static void
-float_handler (int signo)
-{
- /* This message is based on ANSI C, section 4.7. Note that integer
- divide by zero causes this, so "float" is a misnomer. */
- signal (SIGFPE, float_handler);
- error ("Erroneous arithmetic operation.");
-}
-
/* 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
async_annotation_suffix = "prompt";
/* Set the variable associated with the setshow prompt command. */
new_async_prompt = savestring (PROMPT (0), strlen (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);
}
gdb_prompt_escape = 0; /* default to none. */
add_show_from_set (c, &showhistlist);
c->function.sfunc = set_history_size_command;
- add_show_from_set
- (add_set_cmd ("filename", no_class, var_filename, (char *) &history_filename,
- "Set the filename in which to record the command history\n\
- (the list of previous commands of which a record is kept).", &sethistlist),
- &showhistlist);
+ c = add_set_cmd ("filename", no_class, var_filename,
+ (char *) &history_filename,
+ "Set the filename in which to record the command history\n\
+ (the list of previous commands of which a record is kept).", &sethistlist);
+ c->completer = filename_completer;
+ add_show_from_set (c, &showhistlist);
add_show_from_set
(add_set_cmd ("confirm", class_support, var_boolean,
&showlist);
}
}
+
+void
+gdb_init (char *argv0)
+{
+ if (pre_init_ui_hook)
+ pre_init_ui_hook ();
+
+ /* Run the init function of each source file */
+
+ getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
+ current_directory = gdb_dirbuf;
+
+#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 */
+ initialize_all_files ();
+ initialize_current_architecture ();
+ init_cli_cmds();
+ init_main (); /* But that omits this file! Do it now */
+
+ /* The signal handling mechanism is different depending whether or
+ not the async version is run. NOTE: in the future we plan to make
+ the event loop be the default engine of gdb, and this difference
+ will disappear. */
+ if (event_loop_p)
+ async_init_signals ();
+ else
+ 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. */
+
+#ifdef UI_OUT
+ /* Install the default UI */
+ if (!init_ui_hook)
+ {
+ uiout = cli_out_new (gdb_stdout);
+
+ /* All the interpreters should have had a look at things by now.
+ Initialize the selected interpreter. */
+ if (interpreter_p)
+ {
+ fprintf_unfiltered (gdb_stderr, "Interpreter `%s' unrecognized.\n",
+ interpreter_p);
+ exit (1);
+ }
+ }
+#endif
+
+ if (init_ui_hook)
+ init_ui_hook (argv0);
+}
projects / deliverable / binutils-gdb.git / blobdiff