/* 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, 2002, 2003
+ 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 "cli/cli-decode.h"
#include "symtab.h"
#include "inferior.h"
-#include "signals.h"
+#include <signal.h>
#include "target.h"
#include "breakpoint.h"
#include "gdbtypes.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"
/* readline include files */
#include <readline/readline.h>
#include "gdb_string.h"
#include "gdb_stat.h"
#include <ctype.h>
-#ifdef UI_OUT
#include "ui-out.h"
#include "cli-out.h"
-#endif
-
-/* Prototypes for local functions */
-
-static void dont_repeat_command PARAMS ((char *, int));
-
-static void source_cleanup_lines PARAMS ((PTR));
-
-static void user_defined_command PARAMS ((char *, int));
-
-static void init_signals PARAMS ((void));
-
-#ifdef STOP_SIGNAL
-static void stop_sig PARAMS ((int));
-#endif
-
-static char *line_completion_function PARAMS ((char *, int, char *, int));
-
-static char *readline_line_completion_function PARAMS ((char *, int));
-
-/* NOTE 1999-04-29: this function will be static again, after we make the
- event loop be the default command loop for gdb, and we merge
- event-top.c into this file, top.c */
-/* static */ void command_loop_marker PARAMS ((int));
-
-static void while_command PARAMS ((char *, int));
-
-static void if_command PARAMS ((char *, int));
-
-static struct command_line *
- build_command_line PARAMS ((enum command_control_type, char *));
-
-static struct command_line *
- get_command_line PARAMS ((enum command_control_type, char *));
-
-static void realloc_body_list PARAMS ((struct command_line *, int));
-
-static enum misc_command_type read_next_line PARAMS ((struct command_line **));
-
-static enum command_control_type
-recurse_read_control_structure PARAMS ((struct command_line *));
-
-static struct cleanup *setup_user_args PARAMS ((char *));
-
-static char *locate_arg PARAMS ((char *));
-
-static char *insert_args PARAMS ((char *));
-
-static void arg_cleanup PARAMS ((void));
-
-static void init_main PARAMS ((void));
-
-static void init_cmd_lists PARAMS ((void));
-
-static void float_handler PARAMS ((int));
-
-static void init_signals PARAMS ((void));
-
-static void set_verbose PARAMS ((char *, int, struct cmd_list_element *));
-
-static void show_history PARAMS ((char *, int));
-
-static void set_history PARAMS ((char *, int));
-
-static void set_history_size_command PARAMS ((char *, int,
- struct cmd_list_element *));
-
-static void show_commands PARAMS ((char *, int));
-
-static void echo_command PARAMS ((char *, int));
-
-static void pwd_command PARAMS ((char *, int));
-
-static void show_version PARAMS ((char *, int));
-
-static void document_command PARAMS ((char *, int));
-
-static void define_command PARAMS ((char *, int));
-
-static void validate_comname PARAMS ((char *));
-
-static void help_command PARAMS ((char *, int));
-
-static void show_command PARAMS ((char *, int));
-
-static void info_command PARAMS ((char *, int));
-
-static void complete_command PARAMS ((char *, int));
-
-static void do_nothing PARAMS ((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 PARAMS ((PTR));
-
-static void disconnect PARAMS ((int));
-#endif
-
-static void source_cleanup PARAMS ((FILE *));
/* Default command line prompt. This is overriden in some configs. */
/* If nonzero, and GDB has been configured to be able to use windows,
attempt to open them upon startup. */
-int use_windows = 1;
+int use_windows = 0;
extern char lang_frame_mismatch_warn[]; /* language.c */
int caution = 1; /* Default is yes, sigh. */
-/* Define all cmd_list_elements. */
-
-/* Chain containing all defined commands. */
-
-struct cmd_list_element *cmdlist;
-
-/* Chain containing all defined info subcommands. */
-
-struct cmd_list_element *infolist;
-
-/* Chain containing all defined enable subcommands. */
-
-struct cmd_list_element *enablelist;
-
-/* Chain containing all defined disable subcommands. */
-
-struct cmd_list_element *disablelist;
-
-/* Chain containing all defined toggle subcommands. */
-
-struct cmd_list_element *togglelist;
-
-/* Chain containing all defined stop subcommands. */
-
-struct cmd_list_element *stoplist;
-
-/* Chain containing all defined delete subcommands. */
-
-struct cmd_list_element *deletelist;
-
-/* Chain containing all defined "enable breakpoint" subcommands. */
-
-struct cmd_list_element *enablebreaklist;
-
-/* Chain containing all defined set subcommands */
-
-struct cmd_list_element *setlist;
-
-/* Chain containing all defined unset subcommands */
-
-struct cmd_list_element *unsetlist;
-
-/* Chain containing all defined show subcommands. */
-
-struct cmd_list_element *showlist;
-
-/* Chain containing all defined \"set history\". */
-
-struct cmd_list_element *sethistlist;
-
-/* Chain containing all defined \"show history\". */
-
-struct cmd_list_element *showhistlist;
-
-/* Chain containing all defined \"unset history\". */
-
-struct cmd_list_element *unsethistlist;
-
-/* Chain containing all defined maintenance subcommands. */
-
-struct cmd_list_element *maintenancelist;
-
-/* Chain containing all defined "maintenance info" subcommands. */
-
-struct cmd_list_element *maintenanceinfolist;
-
-/* Chain containing all defined "maintenance print" subcommands. */
-
-struct cmd_list_element *maintenanceprintlist;
-
-struct cmd_list_element *setprintlist;
-
-struct cmd_list_element *showprintlist;
-
-struct cmd_list_element *setchecklist;
-
-struct cmd_list_element *showchecklist;
-
/* 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. */
The function receives two args: an input stream,
and a prompt string. */
-void (*window_hook) PARAMS ((FILE *, char *));
+void (*window_hook) (FILE *, char *);
int epoch_interface;
int xgdb_verbose;
/* gdb prints this when reading a command interactively */
static char *gdb_prompt_string; /* the global prompt string */
-extern char *get_prompt PARAMS ((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;
+/* Sbrk location on entry to main. Used for statistics only. */
+#ifdef HAVE_SBRK
+char *lim_at_start;
+#endif
/* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
#ifndef STOP_SIGNAL
#ifdef SIGTSTP
#define STOP_SIGNAL SIGTSTP
-static void stop_sig PARAMS ((int));
-#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
+static void stop_sig (int);
#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
- command file. */
+ command file.
-void (*init_ui_hook) PARAMS ((char *argv0));
+ 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 (*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 (*ui_loop_hook) PARAMS ((int));
+int (*ui_loop_hook) (int);
/* Called instead of command_loop at top level. Can be invoked via
- return_to_top_level. */
+ throw_exception(). */
-void (*command_loop_hook) PARAMS ((void));
+void (*command_loop_hook) (void);
/* Called from print_frame_info to list the line we stopped in. */
-void (*print_frame_info_listing_hook) PARAMS ((struct symtab * s, int line,
- int stopline, int noerror));
+void (*print_frame_info_listing_hook) (struct symtab * s, int line,
+ int stopline, int noerror);
/* Replaces most of query. */
-int (*query_hook) PARAMS ((const char *, va_list));
+int (*query_hook) (const char *, va_list);
/* Replaces most of warning. */
-void (*warning_hook) PARAMS ((const char *, va_list));
+void (*warning_hook) (const char *, va_list);
/* These three functions support getting lines of text from the user. They
are used in sequence. First readline_begin_hook is called with a text
to notify the GUI that we are done with the interaction window and it
can close it. */
-void (*readline_begin_hook) PARAMS ((char *,...));
-char *(*readline_hook) PARAMS ((char *));
-void (*readline_end_hook) PARAMS ((void));
+void (*readline_begin_hook) (char *, ...);
+char *(*readline_hook) (char *);
+void (*readline_end_hook) (void);
/* Called as appropriate to notify the interface of the specified breakpoint
conditions. */
-void (*create_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
-void (*delete_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
-void (*modify_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
+void (*create_breakpoint_hook) (struct breakpoint * bpt);
+void (*delete_breakpoint_hook) (struct breakpoint * bpt);
+void (*modify_breakpoint_hook) (struct breakpoint * bpt);
/* Called as appropriate to notify the interface that we have attached
to or detached from an already running process. */
-void (*attach_hook) PARAMS ((void));
-void (*detach_hook) PARAMS ((void));
+void (*attach_hook) (void);
+void (*detach_hook) (void);
/* Called during long calculations to allow GUI to repair window damage, and to
check for stop buttons, etc... */
-void (*interactive_hook) PARAMS ((void));
+void (*interactive_hook) (void);
/* Called when the registers have changed, as a hint to a GUI
to minimize window update. */
-void (*registers_changed_hook) PARAMS ((void));
+void (*registers_changed_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 (*register_changed_hook) PARAMS ((int regno));
+void (*register_changed_hook) (int regno);
/* Tell the GUI someone changed LEN bytes of memory at ADDR */
-void (*memory_changed_hook) PARAMS ((CORE_ADDR addr, int len));
+void (*memory_changed_hook) (CORE_ADDR addr, int len);
/* Called when going to wait for the target. Usually allows the GUI to run
while waiting for target events. */
-int (*target_wait_hook) PARAMS ((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... */
-void (*call_command_hook) PARAMS ((struct cmd_list_element * c, char *cmd,
- int from_tty));
+void (*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 (*set_hook) PARAMS ((struct cmd_list_element *c));
+void (*set_hook) (struct cmd_list_element * c);
/* Called when the current thread changes. Argument is thread id. */
-void (*context_hook) PARAMS ((int id));
+void (*context_hook) (int id);
/* Takes control from error (). Typically used to prevent longjmps out of the
middle of the GUI. Usually used in conjunction with a catch routine. */
-NORETURN void (*error_hook)
-PARAMS ((void)) ATTR_NORETURN;
+NORETURN void (*error_hook) (void) ATTR_NORETURN;
\f
/* One should use catch_errors rather than manipulating these
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. */
+/* Where to go for throw_exception(). */
static SIGJMP_BUF *catch_return;
/* Return for reason REASON to the nearest containing catch_errors(). */
NORETURN void
-return_to_top_level (reason)
- enum return_reason reason;
+throw_exception (enum return_reason reason)
{
quit_flag = 0;
immediate_quit = 0;
to that call via setjmp's return value. Note that REASON can't
be zero, by definition in defs.h. */
- (NORETURN void) SIGLONGJMP (*catch_return, (int)reason);
+ (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 throw_exception() 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).
code also randomly used a SET_TOP_LEVEL macro that directly
initialize the longjmp buffers. */
-/* MAYBE: cagney/1999-11-05: Should the catch_erros and cleanups code
+/* MAYBE: cagney/1999-11-05: Should the catch_errors and cleanups code
be consolidated into a single file instead of being distributed
between utils.c and top.c? */
-int
-catch_errors (func, args, errstring, mask)
- 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;
- /* FIXME: cagney/1999-11-05: A correct FUNC implementaton will
+ /* FIXME: cagney/1999-11-05: A correct FUNC implementation will
clean things up (restoring the cleanup chain) to the state they
- were just prior to the call. Unfortunatly, many FUNC's are not
+ were just prior to the call. Unfortunately, many FUNC's are not
that well behaved. This could be fixed by adding either a
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.
+ throw_exception (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. */
+static 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
/* FIXME: cagney/1999-11-07: Technically this do_cleanups() call
isn't needed. Instead an assertion check could be made that
simply confirmed that the called function correctly cleaned up
- after its self. Unfortunatly, old code (prior to 1999-11-04) in
+ after itself. Unfortunately, old code (prior to 1999-11-04) in
main.c was calling SET_TOP_LEVEL(), calling the command function,
and then *always* calling do_cleanups(). For the moment we
remain ``bug compatible'' with that old code.. */
}
int
-catch_command_errors (catch_command_errors_ftype *command,
+catch_command_errors (catch_command_errors_ftype * command,
char *arg, int from_tty, return_mask mask)
{
struct captured_command_args args;
/* Handler for SIGHUP. */
#ifdef SIGHUP
-static void
-disconnect (signo)
- 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 (s)
- 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. */
/* Clean up on error during a "source" command (or execution of a
user-defined command). */
-static void
-source_cleanup (stream)
- FILE *stream;
+void
+do_restore_instream_cleanup (void *stream)
{
/* Restore the previous input stream. */
instream = stream;
/* Read commands from STREAM. */
void
-read_command_file (stream)
- FILE *stream;
+read_command_file (FILE *stream)
{
struct cleanup *cleanups;
- cleanups = make_cleanup ((make_cleanup_func) source_cleanup, instream);
+ cleanups = make_cleanup (do_restore_instream_cleanup, instream);
instream = stream;
command_loop ();
do_cleanups (cleanups);
}
\f
-extern void init_proc PARAMS ((void));
-
-void (*pre_init_ui_hook) PARAMS ((void));
+void (*pre_init_ui_hook) (void);
+#ifdef __MSDOS__
void
-gdb_init (argv0)
- char *argv0;
+do_chdir_cleanup (void *old_dir)
{
- 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 ((make_cleanup_func) chdir, strsave (current_directory));
+ chdir (old_dir);
+ xfree (old_dir);
+}
#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_main (); /* But that omits this file! Do it now */
+/* Execute the line P as a command.
+ Pass FROM_TTY as second argument to the defining function. */
- /* 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 ();
+void
+execute_command (char *p, int from_tty)
+{
+ struct cmd_list_element *c;
+ enum language flang;
+ static int warned = 0;
+ char *line;
+
+ free_all_values ();
- /* 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. */
+ /* Force cleanup of any alloca areas if using C alloca instead of
+ a builtin alloca. */
+ alloca (0);
-#ifdef UI_OUT
- /* Install the default UI */
- uiout = cli_out_new (gdb_stdout);
-#endif
+ /* This can happen when command_line_input hits end of file. */
+ if (p == NULL)
+ return;
+
+ serial_log_command (p);
-#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)
+ while (*p == ' ' || *p == '\t')
+ p++;
+ if (*p)
{
- fprintf_unfiltered (gdb_stderr, "Interpreter `%s' unrecognized.\n",
- interpreter_p);
- exit (1);
- }
-#endif
+ char *arg;
+ line = p;
- if (init_ui_hook)
- init_ui_hook (argv0);
-}
+ c = lookup_cmd (&p, cmdlist, "", 0, 1);
-/* Allocate, initialize a new command line structure for one of the
- control commands (if/while). */
+ /* If the target is running, we allow only a limited set of
+ commands. */
+ if (event_loop_p && target_can_async_p () && target_executing)
+ if (!strcmp (c->name, "help")
+ && !strcmp (c->name, "pwd")
+ && !strcmp (c->name, "show")
+ && !strcmp (c->name, "stop"))
+ error ("Cannot execute this command while the target is running.");
-static struct command_line *
-build_command_line (type, args)
- enum command_control_type type;
- char *args;
-{
- struct command_line *cmd;
-
- if (args == NULL)
- error ("if/while commands require arguments.\n");
-
- cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
- cmd->next = NULL;
- cmd->control_type = type;
-
- cmd->body_count = 1;
- cmd->body_list
- = (struct command_line **) xmalloc (sizeof (struct command_line *)
- * cmd->body_count);
- memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
- cmd->line = savestring (args, strlen (args));
- return cmd;
-}
+ /* Pass null arg rather than an empty one. */
+ arg = *p ? p : 0;
-/* Build and return a new command structure for the control commands
- such as "if" and "while". */
+ /* 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';
+ }
-static struct command_line *
-get_command_line (type, arg)
- enum command_control_type type;
- char *arg;
-{
- struct command_line *cmd;
- struct cleanup *old_chain = NULL;
+ /* If this command has been pre-hooked, run the hook first. */
+ execute_cmd_pre_hook (c);
- /* Allocate and build a new command line structure. */
- cmd = build_command_line (type, arg);
+ if (c->flags & DEPRECATED_WARN_USER)
+ deprecated_cmd_warning (&line);
- old_chain = make_cleanup ((make_cleanup_func) free_command_lines, &cmd);
+ 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 (call_command_hook)
+ call_command_hook (c, arg, from_tty & caution);
+ else
+ cmd_func (c, arg, from_tty & caution);
+
+ /* If this command has been post-hooked, run the hook last. */
+ execute_cmd_post_hook (c);
- /* Read in the body of this command. */
- if (recurse_read_control_structure (cmd) == invalid_control)
- {
- warning ("error reading in control structure\n");
- do_cleanups (old_chain);
- return NULL;
}
- discard_cleanups (old_chain);
- return cmd;
-}
-
-/* Recursively print a command (including full control structures). */
-#ifdef UI_OUT
-void
-print_command_lines (uiout, cmd, depth)
- struct ui_out *uiout;
- struct command_line *cmd;
- unsigned int depth;
-{
- struct command_line *list;
-
- list = cmd;
- while (list)
+ /* Tell the user if the language has changed (except first time). */
+ if (current_language != expected_language)
{
-
- if (depth)
- ui_out_spaces (uiout, 2 * depth);
-
- /* A simple command, print it and continue. */
- if (list->control_type == simple_control)
- {
- ui_out_field_string (uiout, NULL, list->line);
- ui_out_text (uiout, "\n");
- list = list->next;
- continue;
- }
-
- /* loop_continue to jump to the start of a while loop, print it
- and continue. */
- if (list->control_type == continue_control)
+ if (language_mode == language_mode_auto)
{
- ui_out_field_string (uiout, NULL, "loop_continue");
- ui_out_text (uiout, "\n");
- list = list->next;
- continue;
+ language_info (1); /* Print what changed. */
}
-
- /* loop_break to break out of a while loop, print it and continue. */
- if (list->control_type == break_control)
- {
- ui_out_field_string (uiout, NULL, "loop_break");
- ui_out_text (uiout, "\n");
- list = list->next;
- continue;
- }
-
- /* A while command. Recursively print its subcommands and continue. */
- if (list->control_type == while_control)
- {
- ui_out_text (uiout, "while ");
- ui_out_field_fmt (uiout, NULL, "while %s", list->line);
- ui_out_text (uiout, "\n");
- print_command_lines (uiout, *list->body_list, depth + 1);
- ui_out_field_string (uiout, NULL, "end");
- if (depth)
- ui_out_spaces (uiout, 2 * depth);
- ui_out_text (uiout, "end\n");
- list = list->next;
- continue;
- }
-
- /* An if command. Recursively print both arms before continueing. */
- if (list->control_type == if_control)
- {
- ui_out_text (uiout, "if ");
- ui_out_field_fmt (uiout, NULL, "if %s", list->line);
- ui_out_text (uiout, "\n");
- /* The true arm. */
- print_command_lines (uiout, list->body_list[0], depth + 1);
-
- /* Show the false arm if it exists. */
- if (list->body_count == 2)
- {
- if (depth)
- ui_out_spaces (uiout, 2 * depth);
- ui_out_field_string (uiout, NULL, "else");
- ui_out_text (uiout, "else\n");
- print_command_lines (uiout, list->body_list[1], depth + 1);
- }
-
- ui_out_field_string (uiout, NULL, "end");
- if (depth)
- ui_out_spaces (uiout, 2 * depth);
- ui_out_text (uiout, "end\n");
- list = list->next;
- continue;
- }
-
- /* ignore illegal command type and try next */
- list = list->next;
- } /* while (list) */
-}
-#else
-void
-print_command_line (cmd, depth, stream)
- struct command_line *cmd;
- unsigned int depth;
- struct ui_file *stream;
-{
- unsigned int i;
-
- if (depth)
- {
- for (i = 0; i < depth; i++)
- fputs_filtered (" ", stream);
- }
-
- /* A simple command, print it and return. */
- if (cmd->control_type == simple_control)
- {
- fputs_filtered (cmd->line, stream);
- fputs_filtered ("\n", stream);
- return;
- }
-
- /* loop_continue to jump to the start of a while loop, print it
- and return. */
- if (cmd->control_type == continue_control)
- {
- fputs_filtered ("loop_continue\n", stream);
- return;
- }
-
- /* loop_break to break out of a while loop, print it and return. */
- if (cmd->control_type == break_control)
- {
- fputs_filtered ("loop_break\n", stream);
- return;
- }
-
- /* A while command. Recursively print its subcommands before returning. */
- if (cmd->control_type == while_control)
- {
- struct command_line *list;
- fputs_filtered ("while ", stream);
- fputs_filtered (cmd->line, stream);
- fputs_filtered ("\n", stream);
- list = *cmd->body_list;
- while (list)
- {
- print_command_line (list, depth + 1, stream);
- list = list->next;
- }
- }
-
- /* An if command. Recursively print both arms before returning. */
- if (cmd->control_type == if_control)
- {
- fputs_filtered ("if ", stream);
- fputs_filtered (cmd->line, stream);
- fputs_filtered ("\n", stream);
- /* The true arm. */
- print_command_line (cmd->body_list[0], depth + 1, stream);
-
- /* Show the false arm if it exists. */
- if (cmd->body_count == 2)
- {
- if (depth)
- {
- for (i = 0; i < depth; i++)
- fputs_filtered (" ", stream);
- }
- fputs_filtered ("else\n", stream);
- print_command_line (cmd->body_list[1], depth + 1, stream);
- }
- if (depth)
- {
- for (i = 0; i < depth; i++)
- fputs_filtered (" ", stream);
- }
- fputs_filtered ("end\n", stream);
- }
-}
-#endif
-
-/* Execute the command in CMD. */
-
-enum command_control_type
-execute_control_command (cmd)
- struct command_line *cmd;
-{
- struct expression *expr;
- struct command_line *current;
- struct cleanup *old_chain = 0;
- value_ptr val;
- value_ptr val_mark;
- int loop;
- enum command_control_type ret;
- char *new_line;
-
- switch (cmd->control_type)
- {
- case simple_control:
- /* A simple command, execute it and return. */
- new_line = insert_args (cmd->line);
- if (!new_line)
- return invalid_control;
- old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
- &new_line);
- execute_command (new_line, 0);
- ret = cmd->control_type;
- break;
-
- case continue_control:
- case break_control:
- /* Return for "continue", and "break" so we can either
- continue the loop at the top, or break out. */
- ret = cmd->control_type;
- break;
-
- case while_control:
- {
- /* Parse the loop control expression for the while statement. */
- new_line = insert_args (cmd->line);
- if (!new_line)
- return invalid_control;
- old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
- &new_line);
- expr = parse_expression (new_line);
- make_cleanup ((make_cleanup_func) free_current_contents, &expr);
-
- ret = simple_control;
- loop = 1;
-
- /* Keep iterating so long as the expression is true. */
- while (loop == 1)
- {
- int cond_result;
-
- QUIT;
-
- /* Evaluate the expression. */
- val_mark = value_mark ();
- val = evaluate_expression (expr);
- cond_result = value_true (val);
- value_free_to_mark (val_mark);
-
- /* If the value is false, then break out of the loop. */
- if (!cond_result)
- break;
-
- /* Execute the body of the while statement. */
- current = *cmd->body_list;
- while (current)
- {
- ret = execute_control_command (current);
-
- /* If we got an error, or a "break" command, then stop
- looping. */
- if (ret == invalid_control || ret == break_control)
- {
- loop = 0;
- break;
- }
-
- /* If we got a "continue" command, then restart the loop
- at this point. */
- if (ret == continue_control)
- break;
-
- /* Get the next statement. */
- current = current->next;
- }
- }
-
- /* Reset RET so that we don't recurse the break all the way down. */
- if (ret == break_control)
- ret = simple_control;
-
- break;
- }
-
- case if_control:
- {
- new_line = insert_args (cmd->line);
- if (!new_line)
- return invalid_control;
- old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
- &new_line);
- /* Parse the conditional for the if statement. */
- expr = parse_expression (new_line);
- make_cleanup ((make_cleanup_func) free_current_contents, &expr);
-
- current = NULL;
- ret = simple_control;
-
- /* Evaluate the conditional. */
- val_mark = value_mark ();
- val = evaluate_expression (expr);
-
- /* Choose which arm to take commands from based on the value of the
- conditional expression. */
- if (value_true (val))
- current = *cmd->body_list;
- else if (cmd->body_count == 2)
- current = *(cmd->body_list + 1);
- value_free_to_mark (val_mark);
-
- /* Execute commands in the given arm. */
- while (current)
- {
- ret = execute_control_command (current);
-
- /* If we got an error, get out. */
- if (ret != simple_control)
- break;
-
- /* Get the next statement in the body. */
- current = current->next;
- }
-
- break;
- }
-
- default:
- warning ("Invalid control type in command structure.");
- return invalid_control;
- }
-
- if (old_chain)
- do_cleanups (old_chain);
-
- return ret;
-}
-
-/* "while" command support. Executes a body of statements while the
- loop condition is nonzero. */
-
-static void
-while_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- struct command_line *command = NULL;
-
- control_level = 1;
- command = get_command_line (while_control, arg);
-
- if (command == NULL)
- return;
-
- execute_control_command (command);
- free_command_lines (&command);
-}
-
-/* "if" command support. Execute either the true or false arm depending
- on the value of the if conditional. */
-
-static void
-if_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- struct command_line *command = NULL;
-
- control_level = 1;
- command = get_command_line (if_control, arg);
-
- if (command == NULL)
- return;
-
- execute_control_command (command);
- free_command_lines (&command);
-}
-
-/* Cleanup */
-static void
-arg_cleanup ()
-{
- struct user_args *oargs = user_args;
- if (!user_args)
- internal_error ("Internal error, arg_cleanup called with no user args.\n");
-
- user_args = user_args->next;
- free (oargs);
-}
-
-/* Bind the incomming arguments for a user defined command to
- $arg0, $arg1 ... $argMAXUSERARGS. */
-
-static struct cleanup *
-setup_user_args (p)
- char *p;
-{
- struct user_args *args;
- struct cleanup *old_chain;
- unsigned int arg_count = 0;
-
- args = (struct user_args *) xmalloc (sizeof (struct user_args));
- memset (args, 0, sizeof (struct user_args));
-
- args->next = user_args;
- user_args = args;
-
- old_chain = make_cleanup ((make_cleanup_func) arg_cleanup, 0);
-
- if (p == NULL)
- return old_chain;
-
- while (*p)
- {
- char *start_arg;
- int squote = 0;
- int dquote = 0;
- int bsquote = 0;
-
- if (arg_count >= MAXUSERARGS)
- {
- error ("user defined function may only have %d arguments.\n",
- MAXUSERARGS);
- return old_chain;
- }
-
- /* Strip whitespace. */
- while (*p == ' ' || *p == '\t')
- p++;
-
- /* P now points to an argument. */
- start_arg = p;
- user_args->a[arg_count].arg = p;
-
- /* Get to the end of this argument. */
- while (*p)
- {
- if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote)
- break;
- else
- {
- if (bsquote)
- bsquote = 0;
- else if (*p == '\\')
- bsquote = 1;
- else if (squote)
- {
- if (*p == '\'')
- squote = 0;
- }
- else if (dquote)
- {
- if (*p == '"')
- dquote = 0;
- }
- else
- {
- if (*p == '\'')
- squote = 1;
- else if (*p == '"')
- dquote = 1;
- }
- p++;
- }
- }
-
- user_args->a[arg_count].len = p - start_arg;
- arg_count++;
- user_args->count++;
- }
- return old_chain;
-}
-
-/* Given character string P, return a point to the first argument ($arg),
- or NULL if P contains no arguments. */
-
-static char *
-locate_arg (p)
- char *p;
-{
- while ((p = strchr (p, '$')))
- {
- if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4]))
- return p;
- p++;
- }
- return NULL;
-}
-
-/* Insert the user defined arguments stored in user_arg into the $arg
- arguments found in line, with the updated copy being placed into nline. */
-
-static char *
-insert_args (line)
- char *line;
-{
- char *p, *save_line, *new_line;
- unsigned len, i;
-
- /* First we need to know how much memory to allocate for the new line. */
- save_line = line;
- len = 0;
- while ((p = locate_arg (line)))
- {
- len += p - line;
- i = p[4] - '0';
-
- if (i >= user_args->count)
- {
- error ("Missing argument %d in user function.\n", i);
- return NULL;
- }
- len += user_args->a[i].len;
- line = p + 5;
- }
-
- /* Don't forget the tail. */
- len += strlen (line);
-
- /* Allocate space for the new line and fill it in. */
- new_line = (char *) xmalloc (len + 1);
- if (new_line == NULL)
- return NULL;
-
- /* Restore pointer to beginning of old line. */
- line = save_line;
-
- /* Save pointer to beginning of new line. */
- save_line = new_line;
-
- while ((p = locate_arg (line)))
- {
- int i, len;
-
- memcpy (new_line, line, p - line);
- new_line += p - line;
- i = p[4] - '0';
-
- len = user_args->a[i].len;
- if (len)
- {
- memcpy (new_line, user_args->a[i].arg, len);
- new_line += len;
- }
- line = p + 5;
- }
- /* Don't forget the tail. */
- strcpy (new_line, line);
-
- /* Return a pointer to the beginning of the new line. */
- return save_line;
-}
-
-void
-execute_user_command (c, args)
- struct cmd_list_element *c;
- char *args;
-{
- register struct command_line *cmdlines;
- struct cleanup *old_chain;
- enum command_control_type ret;
-
- old_chain = setup_user_args (args);
-
- cmdlines = c->user_commands;
- if (cmdlines == 0)
- /* Null command */
- return;
-
- /* Set the instream to 0, indicating execution of a
- user-defined function. */
- old_chain = make_cleanup ((make_cleanup_func) source_cleanup, instream);
- instream = (FILE *) 0;
- while (cmdlines)
- {
- ret = execute_control_command (cmdlines);
- if (ret != simple_control && ret != break_control)
- {
- warning ("Error in control structure.\n");
- break;
- }
- cmdlines = cmdlines->next;
- }
- do_cleanups (old_chain);
-}
-
-/* Execute the line P as a command.
- Pass FROM_TTY as second argument to the defining function. */
-
-void
-execute_command (p, from_tty)
- char *p;
- int from_tty;
-{
- register struct cmd_list_element *c;
- register enum language flang;
- static int warned = 0;
- /* FIXME: These should really be in an appropriate header file */
- extern void serial_log_command PARAMS ((const char *));
-
- free_all_values ();
-
- /* 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)
- return;
-
- serial_log_command (p);
-
- while (*p == ' ' || *p == '\t')
- p++;
- if (*p)
- {
- char *arg;
-
- c = lookup_cmd (&p, cmdlist, "", 0, 1);
-
- /* If the target is running, we allow only a limited set of
- commands. */
- if (event_loop_p && target_can_async_p () && target_executing)
- if (!strcmp (c->name, "help")
- && !strcmp (c->name, "pwd")
- && !strcmp (c->name, "show")
- && !strcmp (c->name, "stop"))
- error ("Cannot execute this command while the target is running.");
-
- /* Pass null arg rather than an empty one. */
- arg = *p ? p : 0;
-
- /* Clear off trailing whitespace, except for set and complete command. */
- if (arg && c->type != set_cmd && c->function.cfunc != complete_command)
- {
- p = arg + strlen (arg) - 1;
- while (p >= arg && (*p == ' ' || *p == '\t'))
- p--;
- *(p + 1) = '\0';
- }
-
- /* If this command has been hooked, run the hook first. */
- if (c->hook)
- execute_user_command (c->hook, (char *) 0);
-
- 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 (c->function.cfunc == NO_FUNCTION)
- error ("That is not a command, just a help topic.");
- else if (call_command_hook)
- call_command_hook (c, arg, from_tty & caution);
- else
- (*c->function.cfunc) (arg, from_tty & caution);
- }
-
- /* Tell the user if the language has changed (except first time). */
- if (current_language != expected_language)
- {
- if (language_mode == language_mode_auto)
- {
- language_info (1); /* Print what changed. */
- }
- warned = 0;
- }
+ 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
}
}
-/* ARGSUSED */
-/* 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 */ void
-command_loop_marker (foo)
- int foo;
-{
-}
-
/* Read commands from `instream' and execute them
until end of file or error reading instream. */
void
-command_loop ()
+command_loop (void)
{
struct cleanup *old_chain;
char *command;
while (instream && !feof (instream))
{
-#if defined(TUI)
- extern int insert_mode;
-#endif
if (window_hook && instream == stdin)
(*window_hook) (instream, get_prompt ());
quit_flag = 0;
if (instream == stdin && stdin_is_tty)
reinitialize_more_filter ();
- old_chain = make_cleanup ((make_cleanup_func) command_loop_marker, 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
+ old_chain = make_cleanup (null_cleanup, 0);
+
/* 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;
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
}
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",
such things as displaying time and space usage. If the user asks
for those, they won't work. */
void
-simplified_command_loop (read_input_func, execute_command_func)
- char *(*read_input_func) (char *);
- void (*execute_command_func) (char *, int);
+simplified_command_loop (char *(*read_input_func) (char *),
+ void (*execute_command_func) (char *, int))
{
struct cleanup *old_chain;
char *command;
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);
/* Get a command-line. */
command = (*read_input_func) (instream == stdin ?
/* Commands call this if they do not want to be repeated by null lines. */
void
-dont_repeat ()
+dont_repeat (void)
{
if (server_command)
return;
A NULL return means end of file. */
char *
-gdb_readline (prompt_arg)
- char *prompt_arg;
+gdb_readline (char *prompt_arg)
{
int c;
char *result;
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 */
gdb_flush (gdb_stdout);
}
if we are called again fgetc will still return EOF and
we'll return NULL then. */
break;
- free (result);
+ xfree (result);
return NULL;
}
static int history_size;
static char *history_filename;
-/* readline uses the word breaks for two things:
- (1) In figuring out where to point the TEXT parameter to the
- rl_completion_entry_function. Since we don't use TEXT for much,
- it doesn't matter a lot what the word breaks are for this purpose, but
- it does affect how much stuff M-? lists.
- (2) If one of the matches contains a word break character, readline
- will quote it. That's why we switch between
- gdb_completer_word_break_characters and
- gdb_completer_command_word_break_characters. I'm not sure when
- we need this behavior (perhaps for funky characters in C++ symbols?). */
-
-/* Variables which are necessary for fancy command line editing. */
-char *gdb_completer_word_break_characters =
-" \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
-
-/* When completing on command names, we remove '-' from the list of
- word break characters, since we use it in command names. If the
- readline library sees one in any of the current completion strings,
- it thinks that the string needs to be quoted and automatically supplies
- a leading quote. */
-char *gdb_completer_command_word_break_characters =
-" \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
-
-/* Characters that can be used to quote completion strings. Note that we
- can't include '"' because the gdb C parser treats such quoted sequences
- as strings. */
-char *gdb_completer_quote_characters =
-"'";
-
-/* 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 (text, prefix)
- char *text;
- char *prefix;
-{
- return NULL;
-}
-
-/* Complete on filenames. */
-char **
-filename_completer (text, word)
- char *text;
- char *word;
+/* This is like readline(), but it has some gdb-specific behavior.
+ gdb can use readline in both the synchronous and async modes during
+ a single gdb invocation. At the ordinary top-level prompt we might
+ be using the async readline. That means we can't use
+ rl_pre_input_hook, since it doesn't work properly in async mode.
+ However, for a secondary prompt (" >", such as occurs during a
+ `define'), gdb just calls readline() directly, running it in
+ synchronous mode. So for operate-and-get-next to work in this
+ situation, we have to switch the hooks around. That is what
+ gdb_readline_wrapper is for. */
+char *
+gdb_readline_wrapper (char *prompt)
{
- /* From readline. */
- extern char *filename_completion_function PARAMS ((char *, int));
- int subsequent_name;
- char **return_val;
- int return_val_used;
- int return_val_alloced;
-
- return_val_used = 0;
- /* Small for testing. */
- return_val_alloced = 1;
- return_val = (char **) xmalloc (return_val_alloced * sizeof (char *));
-
- subsequent_name = 0;
- while (1)
+ /* Set the hook that works in this case. */
+ if (event_loop_p && after_char_processing_hook)
{
- char *p;
- p = filename_completion_function (text, subsequent_name);
- if (return_val_used >= return_val_alloced)
- {
- return_val_alloced *= 2;
- return_val =
- (char **) xrealloc (return_val,
- return_val_alloced * sizeof (char *));
- }
- if (p == NULL)
- {
- return_val[return_val_used++] = p;
- break;
- }
- /* Like emacs, don't complete on old versions. Especially useful
- in the "source" command. */
- if (p[strlen (p) - 1] == '~')
- continue;
-
- {
- char *q;
- if (word == text)
- /* Return exactly p. */
- return_val[return_val_used++] = p;
- else if (word > text)
- {
- /* Return some portion of p. */
- q = xmalloc (strlen (p) + 5);
- strcpy (q, p + (word - text));
- return_val[return_val_used++] = q;
- free (p);
- }
- else
- {
- /* Return some of TEXT plus p. */
- q = xmalloc (strlen (p) + (text - word) + 5);
- strncpy (q, word, text - word);
- q[text - word] = '\0';
- strcat (q, p);
- return_val[return_val_used++] = q;
- free (p);
- }
- }
- subsequent_name = 1;
+ rl_pre_input_hook = (Function *) after_char_processing_hook;
+ after_char_processing_hook = NULL;
}
-#if 0
- /* There is no way to do this just long enough to affect quote inserting
- without also affecting the next completion. This should be fixed in
- readline. FIXME. */
- /* Insure that readline does the right thing
- with respect to inserting quotes. */
- rl_completer_word_break_characters = "";
-#endif
- return return_val;
-}
-/* Here are some useful test cases for completion. FIXME: These should
- be put in the test suite. They should be tested with both M-? and TAB.
-
- "show output-" "radix"
- "show output" "-radix"
- "p" ambiguous (commands starting with p--path, print, printf, etc.)
- "p " ambiguous (all symbols)
- "info t foo" no completions
- "info t " no completions
- "info t" ambiguous ("info target", "info terminal", etc.)
- "info ajksdlfk" no completions
- "info ajksdlfk " no completions
- "info" " "
- "info " ambiguous (all info commands)
- "p \"a" no completions (string constant)
- "p 'a" ambiguous (all symbols starting with a)
- "p b-a" ambiguous (all symbols starting with a)
- "p b-" ambiguous (all symbols)
- "file Make" "file" (word break hard to screw up here)
- "file ../gdb.stabs/we" "ird" (needs to not break word at slash)
- */
+ return readline (prompt);
+}
-/* Generate completions one by one for the completer. Each time we are
- called return another potential completion to the caller.
- line_completion just completes on commands or passes the buck to the
- command's completer function, the stuff specific to symbol completion
- is in make_symbol_completion_list.
-
- TEXT is the caller's idea of the "word" we are looking at.
-
- MATCHES is the number of matches that have currently been collected from
- calling this completion function. When zero, then we need to initialize,
- otherwise the initialization has already taken place and we can just
- return the next potential completion string.
-
- LINE_BUFFER is available to be looked at; it contains the entire text
- of the line. POINT is the offset in that line of the cursor. You
- should pretend that the line ends at POINT.
-
- Returns NULL if there are no more completions, else a pointer to a string
- which is a possible completion, it is the caller's responsibility to
- free the string. */
-
-static char *
-line_completion_function (text, matches, line_buffer, point)
- char *text;
- int matches;
- char *line_buffer;
- int point;
-{
- static char **list = (char **) NULL; /* Cache of completions */
- static int index; /* Next cached completion */
- char *output = NULL;
- char *tmp_command, *p;
- /* Pointer within tmp_command which corresponds to text. */
- char *word;
- struct cmd_list_element *c, *result_list;
-
- if (matches == 0)
- {
- /* The caller is beginning to accumulate a new set of completions, so
- we need to find all of them now, and cache them for returning one at
- a time on future calls. */
-
- if (list)
- {
- /* Free the storage used by LIST, but not by the strings inside.
- This is because rl_complete_internal () frees the strings. */
- free ((PTR) list);
- }
- list = 0;
- index = 0;
-
- /* Choose the default set of word break characters to break completions.
- If we later find out that we are doing completions on command strings
- (as opposed to strings supplied by the individual command completer
- functions, which can be any string) then we will switch to the
- special word break set for command strings, which leaves out the
- '-' character used in some commands. */
-
- rl_completer_word_break_characters =
- gdb_completer_word_break_characters;
-
- /* Decide whether to complete on a list of gdb commands or on symbols. */
- tmp_command = (char *) alloca (point + 1);
- p = tmp_command;
-
- strncpy (tmp_command, line_buffer, point);
- tmp_command[point] = '\0';
- /* Since text always contains some number of characters leading up
- to point, we can find the equivalent position in tmp_command
- by subtracting that many characters from the end of tmp_command. */
- word = tmp_command + point - strlen (text);
-
- if (point == 0)
- {
- /* An empty line we want to consider ambiguous; that is, it
- could be any command. */
- c = (struct cmd_list_element *) -1;
- result_list = 0;
- }
- else
- {
- c = lookup_cmd_1 (&p, cmdlist, &result_list, 1);
- }
-
- /* Move p up to the next interesting thing. */
- while (*p == ' ' || *p == '\t')
- {
- p++;
- }
-
- if (!c)
- {
- /* It is an unrecognized command. So there are no
- possible completions. */
- list = NULL;
- }
- else if (c == (struct cmd_list_element *) -1)
- {
- char *q;
-
- /* lookup_cmd_1 advances p up to the first ambiguous thing, but
- doesn't advance over that thing itself. Do so now. */
- q = p;
- while (*q && (isalnum (*q) || *q == '-' || *q == '_'))
- ++q;
- if (q != tmp_command + point)
- {
- /* There is something beyond the ambiguous
- command, so there are no possible completions. For
- example, "info t " or "info t foo" does not complete
- to anything, because "info t" can be "info target" or
- "info terminal". */
- list = NULL;
- }
- else
- {
- /* We're trying to complete on the command which was ambiguous.
- This we can deal with. */
- if (result_list)
- {
- list = complete_on_cmdlist (*result_list->prefixlist, p,
- word);
- }
- else
- {
- list = complete_on_cmdlist (cmdlist, p, word);
- }
- /* Insure that readline does the right thing with respect to
- inserting quotes. */
- rl_completer_word_break_characters =
- gdb_completer_command_word_break_characters;
- }
- }
- else
- {
- /* We've recognized a full command. */
-
- if (p == tmp_command + point)
- {
- /* There is no non-whitespace in the line beyond the command. */
-
- if (p[-1] == ' ' || p[-1] == '\t')
- {
- /* The command is followed by whitespace; we need to complete
- on whatever comes after command. */
- if (c->prefixlist)
- {
- /* It is a prefix command; what comes after it is
- a subcommand (e.g. "info "). */
- list = complete_on_cmdlist (*c->prefixlist, p, word);
-
- /* Insure that readline does the right thing
- with respect to inserting quotes. */
- rl_completer_word_break_characters =
- gdb_completer_command_word_break_characters;
- }
- else if (c->enums)
- {
- list = complete_on_enum (c->enums, p, word);
- rl_completer_word_break_characters =
- gdb_completer_command_word_break_characters;
- }
- else
- {
- /* It is a normal command; what comes after it is
- completed by the command's completer function. */
- list = (*c->completer) (p, word);
- }
- }
- else
- {
- /* The command is not followed by whitespace; we need to
- complete on the command itself. e.g. "p" which is a
- command itself but also can complete to "print", "ptype"
- etc. */
- char *q;
-
- /* Find the command we are completing on. */
- q = p;
- while (q > tmp_command)
- {
- if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_')
- --q;
- else
- break;
- }
-
- list = complete_on_cmdlist (result_list, q, word);
-
- /* Insure that readline does the right thing
- with respect to inserting quotes. */
- rl_completer_word_break_characters =
- gdb_completer_command_word_break_characters;
- }
- }
- else
- {
- /* There is non-whitespace beyond the command. */
-
- if (c->prefixlist && !c->allow_unknown)
- {
- /* It is an unrecognized subcommand of a prefix command,
- e.g. "info adsfkdj". */
- list = NULL;
- }
- else if (c->enums)
- {
- list = complete_on_enum (c->enums, p, word);
- }
- else
- {
- /* It is a normal command. */
- list = (*c->completer) (p, word);
- }
- }
- }
- }
-
- /* If we found a list of potential completions during initialization then
- dole them out one at a time. The vector of completions is NULL
- terminated, so after returning the last one, return NULL (and continue
- to do so) each time we are called after that, until a new list is
- available. */
-
- if (list)
- {
- output = list[index];
- if (output)
- {
- index++;
- }
- }
-
-#if 0
- /* Can't do this because readline hasn't yet checked the word breaks
- for figuring out whether to insert a quote. */
- if (output == NULL)
- /* Make sure the word break characters are set back to normal for the
- next time that readline tries to complete something. */
- rl_completer_word_break_characters =
- gdb_completer_word_break_characters;
-#endif
-
- return (output);
-}
-
-/* Line completion interface function for readline. */
-
-static char *
-readline_line_completion_function (text, matches)
- char *text;
- int matches;
-{
- return line_completion_function (text, matches, rl_line_buffer, rl_point);
-}
-
-/* Skip over a possibly quoted word (as defined by the quote characters
- and word break characters the completer uses). Returns pointer to the
- location after the "word". */
-
-char *
-skip_quoted (str)
- char *str;
-{
- char quote_char = '\0';
- char *scan;
-
- for (scan = str; *scan != '\0'; scan++)
- {
- if (quote_char != '\0')
- {
- /* Ignore everything until the matching close quote char */
- if (*scan == quote_char)
- {
- /* Found matching close quote. */
- scan++;
- break;
- }
- }
- else if (strchr (gdb_completer_quote_characters, *scan))
- {
- /* Found start of a quoted string. */
- quote_char = *scan;
- }
- else if (strchr (gdb_completer_word_break_characters, *scan))
- {
- break;
- }
- }
- return (scan);
-}
-\f
-
-#ifdef STOP_SIGNAL
-static void
-stop_sig (signo)
- int signo;
+\f
+#ifdef STOP_SIGNAL
+static void
+stop_sig (int signo)
{
#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
/* Initialize signal handlers. */
static void
-do_nothing (signo)
- int signo;
+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)
{
/* Under System V the default disposition of a signal is reinstated after
the signal is caught and delivered to an application process. On such
}
static void
-init_signals ()
+init_signals (void)
{
signal (SIGINT, request_quit);
#endif
}
\f
+/* 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;
+
+ if (event_loop_p)
+ {
+ /* Use the async hook. */
+ after_char_processing_hook = gdb_rl_operate_and_get_next_completion;
+ }
+ else
+ {
+ /* This hook only works correctly when we are using the
+ synchronous readline. */
+ rl_pre_input_hook = (Function *) 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);
+}
+\f
/* Read one line from the command input stream `instream'
into the local static buffer `linebuffer' (whose current length
is `linelength').
simple input as the user has requested. */
char *
-command_line_input (prompt_arg, repeat, annotation_suffix)
- char *prompt_arg;
- int repeat;
- char *annotation_suffix;
+command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
{
static char *linebuffer = 0;
static unsigned linelength = 0;
- register char *p;
+ char *p;
char *p1;
char *rl;
char *local_prompt = prompt_arg;
if (annotation_level > 1 && instream == stdin)
{
- printf_unfiltered ("\n\032\032pre-");
- printf_unfiltered (annotation_suffix);
- printf_unfiltered ("\n");
+ puts_unfiltered ("\n\032\032pre-");
+ puts_unfiltered (annotation_suffix);
+ puts_unfiltered ("\n");
}
/* Don't use fancy stuff if not talking to stdin. */
}
else if (command_editing_p && instream == stdin && ISATTY (instream))
{
- rl = readline (local_prompt);
+ rl = gdb_readline_wrapper (local_prompt);
}
else
{
if (annotation_level > 1 && instream == stdin)
{
- printf_unfiltered ("\n\032\032post-");
- printf_unfiltered (annotation_suffix);
- printf_unfiltered ("\n");
+ puts_unfiltered ("\n\032\032post-");
+ puts_unfiltered (annotation_suffix);
+ puts_unfiltered ("\n");
}
if (!rl || rl == (char *) EOF)
while (*p1)
*p++ = *p1++;
- free (rl); /* Allocated in readline. */
+ xfree (rl); /* Allocated in readline. */
if (p == linebuffer || *(p - 1) != '\\')
break;
/* If there was an error, call this function again. */
if (expanded < 0)
{
- free (history_value);
+ xfree (history_value);
return command_line_input (prompt_arg, repeat, annotation_suffix);
}
if (strlen (history_value) > linelength)
}
strcpy (linebuffer, history_value);
p = linebuffer + strlen (linebuffer);
- free (history_value);
+ xfree (history_value);
}
}
if (repeat && !*p1)
return 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 > linesize)
- {
- line = xrealloc (line, linelength);
- linesize = linelength;
- }
- strcpy (line, linebuffer);
- return line;
- }
-
- return linebuffer;
-}
-\f
-
-/* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
- code bodies. This is typically used when we encounter an "else"
- clause for an "if" command. */
-
-static void
-realloc_body_list (command, new_length)
- struct command_line *command;
- int new_length;
-{
- int n;
- struct command_line **body_list;
-
- n = command->body_count;
-
- /* Nothing to do? */
- if (new_length <= n)
- return;
-
- body_list = (struct command_line **)
- xmalloc (sizeof (struct command_line *) * new_length);
-
- memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
-
- free (command->body_list);
- command->body_list = body_list;
- command->body_count = new_length;
-}
-
-/* Read one line from the input stream. If the command is an "else" or
- "end", return such an indication to the caller. */
-
-static enum misc_command_type
-read_next_line (command)
- struct command_line **command;
-{
- char *p, *p1, *prompt_ptr, control_prompt[256];
- int i = 0;
-
- if (control_level >= 254)
- error ("Control nesting too deep!\n");
-
- /* Set a prompt based on the nesting of the control commands. */
- if (instream == stdin || (instream == 0 && readline_hook != NULL))
- {
- for (i = 0; i < control_level; i++)
- control_prompt[i] = ' ';
- control_prompt[i] = '>';
- control_prompt[i + 1] = '\0';
- prompt_ptr = (char *) &control_prompt[0];
- }
- else
- prompt_ptr = NULL;
-
- p = command_line_input (prompt_ptr, instream == stdin, "commands");
-
- /* Not sure what to do here. */
- if (p == NULL)
- return end_command;
-
- /* Strip leading and trailing whitespace. */
- while (*p == ' ' || *p == '\t')
- p++;
-
- p1 = p + strlen (p);
- while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
- p1--;
-
- /* Blanks and comments don't really do anything, but we need to
- distinguish them from else, end and other commands which can be
- executed. */
- if (p1 == p || p[0] == '#')
- return nop_command;
-
- /* Is this the end of a simple, while, or if control structure? */
- if (p1 - p == 3 && !strncmp (p, "end", 3))
- return end_command;
-
- /* Is the else clause of an if control structure? */
- if (p1 - p == 4 && !strncmp (p, "else", 4))
- return else_command;
-
- /* Check for while, if, break, continue, etc and build a new command
- line structure for them. */
- if (p1 - p > 5 && !strncmp (p, "while", 5))
- *command = build_command_line (while_control, p + 6);
- else if (p1 - p > 2 && !strncmp (p, "if", 2))
- *command = build_command_line (if_control, p + 3);
- else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
- {
- *command = (struct command_line *)
- xmalloc (sizeof (struct command_line));
- (*command)->next = NULL;
- (*command)->line = NULL;
- (*command)->control_type = break_control;
- (*command)->body_count = 0;
- (*command)->body_list = NULL;
- }
- else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
- {
- *command = (struct command_line *)
- xmalloc (sizeof (struct command_line));
- (*command)->next = NULL;
- (*command)->line = NULL;
- (*command)->control_type = continue_control;
- (*command)->body_count = 0;
- (*command)->body_list = NULL;
- }
- else
- {
- /* A normal command. */
- *command = (struct command_line *)
- xmalloc (sizeof (struct command_line));
- (*command)->next = NULL;
- (*command)->line = savestring (p, p1 - p);
- (*command)->control_type = simple_control;
- (*command)->body_count = 0;
- (*command)->body_list = NULL;
- }
-
- /* Nothing special. */
- return ok_command;
-}
-
-/* Recursively read in the control structures and create a command_line
- structure from them.
-
- The parent_control parameter is the control structure in which the
- following commands are nested. */
-
-static enum command_control_type
-recurse_read_control_structure (current_cmd)
- struct command_line *current_cmd;
-{
- int current_body, i;
- enum misc_command_type val;
- enum command_control_type ret;
- struct command_line **body_ptr, *child_tail, *next;
-
- child_tail = NULL;
- current_body = 1;
-
- /* Sanity checks. */
- if (current_cmd->control_type == simple_control)
- {
- error ("Recursed on a simple control type\n");
- return invalid_control;
- }
-
- if (current_body > current_cmd->body_count)
- {
- error ("Allocated body is smaller than this command type needs\n");
- return invalid_control;
- }
-
- /* Read lines from the input stream and build control structures. */
- while (1)
- {
- dont_repeat ();
-
- next = NULL;
- val = read_next_line (&next);
-
- /* Just skip blanks and comments. */
- if (val == nop_command)
- continue;
-
- if (val == end_command)
- {
- if (current_cmd->control_type == while_control
- || current_cmd->control_type == if_control)
- {
- /* Success reading an entire control structure. */
- ret = simple_control;
- break;
- }
- else
- {
- ret = invalid_control;
- break;
- }
- }
-
- /* Not the end of a control structure. */
- if (val == else_command)
- {
- if (current_cmd->control_type == if_control
- && current_body == 1)
- {
- realloc_body_list (current_cmd, 2);
- current_body = 2;
- child_tail = NULL;
- continue;
- }
- else
- {
- ret = invalid_control;
- break;
- }
- }
-
- if (child_tail)
- {
- child_tail->next = next;
- }
- else
- {
- body_ptr = current_cmd->body_list;
- for (i = 1; i < current_body; i++)
- body_ptr++;
-
- *body_ptr = next;
-
- }
-
- child_tail = next;
-
- /* If the latest line is another control structure, then recurse
- on it. */
- if (next->control_type == while_control
- || next->control_type == if_control)
- {
- control_level++;
- ret = recurse_read_control_structure (next);
- control_level--;
-
- if (ret != simple_control)
- break;
- }
- }
-
- dont_repeat ();
-
- return ret;
-}
-
-/* Read lines from the input stream and accumulate them in a chain of
- struct command_line's, which is then returned. For input from a
- terminal, the special command "end" is used to mark the end of the
- input, and is not included in the returned chain of commands. */
-
-#define END_MESSAGE "End with a line saying just \"end\"."
-
-struct command_line *
-read_command_lines (prompt_arg, from_tty)
- char *prompt_arg;
- int from_tty;
-{
- struct command_line *head, *tail, *next;
- struct cleanup *old_chain;
- enum command_control_type ret;
- enum misc_command_type val;
-
- control_level = 0;
- if (readline_begin_hook)
- {
- /* Note - intentional to merge messages with no newline */
- (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
- }
- else if (from_tty && input_from_terminal_p ())
- {
- printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
- gdb_flush (gdb_stdout);
- }
-
- head = tail = NULL;
- old_chain = NULL;
-
- while (1)
- {
- val = read_next_line (&next);
-
- /* Ignore blank lines or comments. */
- if (val == nop_command)
- continue;
-
- if (val == end_command)
- {
- ret = simple_control;
- break;
- }
-
- if (val != ok_command)
- {
- ret = invalid_control;
- break;
- }
-
- if (next->control_type == while_control
- || next->control_type == if_control)
- {
- control_level++;
- ret = recurse_read_control_structure (next);
- control_level--;
-
- if (ret == invalid_control)
- break;
- }
-
- if (tail)
- {
- tail->next = next;
- }
- else
- {
- head = next;
- old_chain = make_cleanup ((make_cleanup_func) free_command_lines,
- &head);
- }
- tail = next;
- }
-
- dont_repeat ();
-
- if (head)
- {
- if (ret != invalid_control)
- {
- discard_cleanups (old_chain);
- }
- else
- do_cleanups (old_chain);
- }
-
- if (readline_end_hook)
- {
- (*readline_end_hook) ();
- }
- return (head);
-}
-
-/* Free a chain of struct command_line's. */
-
-void
-free_command_lines (lptr)
- struct command_line **lptr;
-{
- register struct command_line *l = *lptr;
- register struct command_line *next;
- struct command_line **blist;
- int i;
-
- while (l)
- {
- if (l->body_count > 0)
- {
- blist = l->body_list;
- for (i = 0; i < l->body_count; i++, blist++)
- free_command_lines (blist);
- }
- next = l->next;
- free (l->line);
- free ((PTR) l);
- l = next;
- }
-}
-\f
-/* Add an element to the list of info subcommands. */
-
-void
-add_info (name, fun, doc)
- char *name;
- void (*fun) PARAMS ((char *, int));
- char *doc;
-{
- add_cmd (name, no_class, fun, doc, &infolist);
-}
-
-/* Add an alias to the list of info subcommands. */
-
-void
-add_info_alias (name, oldname, abbrev_flag)
- char *name;
- char *oldname;
- int abbrev_flag;
-{
- add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist);
-}
-
-/* The "info" command is defined as a prefix, with allow_unknown = 0.
- Therefore, its own definition is called only for "info" with no args. */
-
-/* ARGSUSED */
-static void
-info_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- printf_unfiltered ("\"info\" must be followed by the name of an info command.\n");
- help_list (infolist, "info ", -1, gdb_stdout);
-}
-
-/* The "complete" command is used by Emacs to implement completion. */
-
-/* ARGSUSED */
-static void
-complete_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- int i;
- int argpoint;
- char *completion;
-
- dont_repeat ();
-
- if (arg == NULL)
- arg = "";
- argpoint = strlen (arg);
-
- for (completion = line_completion_function (arg, i = 0, arg, argpoint);
- completion;
- completion = line_completion_function (arg, ++i, arg, argpoint))
- {
- printf_unfiltered ("%s\n", completion);
- free (completion);
- }
-}
-
-/* The "show" command with no arguments shows all the settings. */
-
-/* ARGSUSED */
-static void
-show_command (arg, from_tty)
- char *arg;
- int from_tty;
-{
- cmd_show_list (showlist, from_tty, "");
-}
-\f
-/* Add an element to the list of commands. */
-
-void
-add_com (name, class, fun, doc)
- char *name;
- enum command_class class;
- void (*fun) PARAMS ((char *, int));
- char *doc;
-{
- add_cmd (name, class, fun, doc, &cmdlist);
-}
-
-/* Add an alias or abbreviation command to the list of commands. */
-
-void
-add_com_alias (name, oldname, class, abbrev_flag)
- char *name;
- char *oldname;
- enum command_class class;
- int abbrev_flag;
-{
- add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist);
-}
-
-void
-error_no_arg (why)
- char *why;
-{
- error ("Argument required (%s).", why);
-}
-
-/* ARGSUSED */
-static void
-help_command (command, from_tty)
- char *command;
- int from_tty; /* Ignored */
-{
- help_cmd (command, gdb_stdout);
-}
-\f
-static void
-validate_comname (comname)
- char *comname;
-{
- register char *p;
-
- if (comname == 0)
- error_no_arg ("name of command to define");
-
- p = comname;
- while (*p)
- {
- if (!isalnum (*p) && *p != '-' && *p != '_')
- error ("Junk in argument list: \"%s\"", p);
- p++;
- }
-}
-
-/* This is just a placeholder in the command data structures. */
-static void
-user_defined_command (ignore, from_tty)
- char *ignore;
- int from_tty;
-{
-}
-
-static void
-define_command (comname, from_tty)
- char *comname;
- int from_tty;
-{
- register struct command_line *cmds;
- register struct cmd_list_element *c, *newc, *hookc = 0;
- char *tem = comname;
- char tmpbuf[128];
-#define HOOK_STRING "hook-"
-#define HOOK_LEN 5
-
- validate_comname (comname);
-
- /* Look it up, and verify that we got an exact match. */
- c = lookup_cmd (&tem, cmdlist, "", -1, 1);
- if (c && !STREQ (comname, c->name))
- c = 0;
-
- if (c)
- {
- if (c->class == class_user || c->class == class_alias)
- tem = "Redefine command \"%s\"? ";
- else
- tem = "Really redefine built-in command \"%s\"? ";
- if (!query (tem, c->name))
- error ("Command \"%s\" not redefined.", c->name);
- }
-
- /* If this new command is a hook, then mark the command which it
- is hooking. Note that we allow hooking `help' commands, so that
- we can hook the `stop' pseudo-command. */
-
- if (!strncmp (comname, HOOK_STRING, HOOK_LEN))
- {
- /* Look up cmd it hooks, and verify that we got an exact match. */
- tem = comname + HOOK_LEN;
- hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
- if (hookc && !STREQ (comname + HOOK_LEN, hookc->name))
- hookc = 0;
- if (!hookc)
- {
- warning ("Your new `%s' command does not hook any existing command.",
- comname);
- if (!query ("Proceed? "))
- error ("Not confirmed.");
- }
- }
-
- comname = savestring (comname, strlen (comname));
-
- /* If the rest of the commands will be case insensitive, this one
- should behave in the same manner. */
- for (tem = comname; *tem; tem++)
- if (isupper (*tem))
- *tem = tolower (*tem);
-
- sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
- cmds = read_command_lines (tmpbuf, from_tty);
-
- if (c && c->class == class_user)
- free_command_lines (&c->user_commands);
-
- newc = add_cmd (comname, class_user, user_defined_command,
- (c && c->class == class_user)
- ? c->doc : savestring ("User-defined.", 13), &cmdlist);
- newc->user_commands = cmds;
-
- /* If this new command is a hook, then mark both commands as being
- tied. */
- if (hookc)
- {
- hookc->hook = newc; /* Target gets hooked. */
- newc->hookee = hookc; /* We are marked as hooking target cmd. */
- }
-}
-
-static void
-document_command (comname, from_tty)
- char *comname;
- int from_tty;
-{
- struct command_line *doclines;
- register struct cmd_list_element *c;
- char *tem = comname;
- char tmpbuf[128];
-
- validate_comname (comname);
-
- c = lookup_cmd (&tem, cmdlist, "", 0, 1);
-
- if (c->class != class_user)
- error ("Command \"%s\" is built-in.", comname);
-
- sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
- doclines = read_command_lines (tmpbuf, from_tty);
-
- if (c->doc)
- free (c->doc);
-
- {
- register struct command_line *cl1;
- register int len = 0;
+ *p = 0;
- for (cl1 = doclines; cl1; cl1 = cl1->next)
- len += strlen (cl1->line) + 1;
+ /* Add line to history if appropriate. */
+ if (instream == stdin
+ && ISATTY (stdin) && *linebuffer)
+ add_history (linebuffer);
- c->doc = (char *) xmalloc (len + 1);
- *c->doc = 0;
+ /* 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. */
- for (cl1 = doclines; cl1; cl1 = cl1->next)
- {
- strcat (c->doc, cl1->line);
- if (cl1->next)
- strcat (c->doc, "\n");
- }
- }
+ /* Save into global buffer if appropriate. */
+ if (repeat)
+ {
+ if (linelength > linesize)
+ {
+ line = xrealloc (line, linelength);
+ linesize = linelength;
+ }
+ strcpy (line, linebuffer);
+ return line;
+ }
- free_command_lines (&doclines);
+ return linebuffer;
}
\f
/* Print the GDB banner. */
void
-print_gdb_version (stream)
- struct ui_file *stream;
+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. */
-#ifdef UI_OUT
- /* Print it console style until a format is defined */
- fprintf_filtered (stream, "GNU gdb %s (UI_OUT)\n", version);
-#else
fprintf_filtered (stream, "GNU gdb %s\n", version);
-#endif
/* Second line is a copyright notice. */
- fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n");
+ fprintf_filtered (stream, "Copyright 2003 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
}
fprintf_filtered (stream, "\".");
}
-
-/* ARGSUSED */
-static void
-show_version (args, from_tty)
- char *args;
- int from_tty;
-{
- immediate_quit++;
- print_gdb_version (gdb_stdout);
- printf_filtered ("\n");
- immediate_quit--;
-}
\f
/* get_prompt: access method for the GDB prompt string. */
-#define MAX_PROMPT_SIZE 256
-
-/*
- * int get_prompt_1 (char * buf);
- *
- * Work-horse for get_prompt (called via catch_errors).
- * Argument is buffer to hold the formatted prompt.
- *
- * Returns: 1 for success (use formatted prompt)
- * 0 for failure (use gdb_prompt_string).
- */
-
-static int gdb_prompt_escape;
-
-static int
-get_prompt_1 (formatted_prompt)
- char *formatted_prompt;
-{
- char *local_prompt;
-
- if (event_loop_p)
- local_prompt = PROMPT (0);
- else
- local_prompt = gdb_prompt_string;
-
-
- if (gdb_prompt_escape == 0)
- {
- return 0; /* do no formatting */
- }
- else
- /* formatted prompt */
- {
- char fmt[40], *promptp, *outp, *tmp;
- value_ptr arg_val;
- DOUBLEST doubleval;
- LONGEST longval;
- CORE_ADDR addrval;
-
- int i, len;
- struct type *arg_type, *elt_type;
-
- promptp = local_prompt;
- outp = formatted_prompt;
-
- while (*promptp != '\0')
- {
- int available = MAX_PROMPT_SIZE - (outp - formatted_prompt) - 1;
-
- if (*promptp != gdb_prompt_escape)
- {
- if (available >= 1) /* overflow protect */
- *outp++ = *promptp++;
- }
- else
- {
- /* GDB prompt string contains escape char. Parse for arg.
- Two consecutive escape chars followed by arg followed by
- a comma means to insert the arg using a default format.
- Otherwise a printf format string may be included between
- the two escape chars. eg:
- %%foo, insert foo using default format
- %2.2f%foo, insert foo using "%2.2f" format
- A mismatch between the format string and the data type
- of "foo" is an error (which we don't know how to protect
- against). */
-
- fmt[0] = '\0'; /* assume null format string */
- if (promptp[1] == gdb_prompt_escape) /* double esc char */
- {
- promptp += 2; /* skip past two escape chars. */
- }
- else
- {
- /* extract format string from between two esc chars */
- i = 0;
- do
- {
- fmt[i++] = *promptp++; /* copy format string */
- }
- while (i < sizeof (fmt) - 1 &&
- *promptp != gdb_prompt_escape &&
- *promptp != '\0');
-
- if (*promptp != gdb_prompt_escape)
- error ("Syntax error at prompt position %d",
- promptp - local_prompt);
- else
- {
- promptp++; /* skip second escape char */
- fmt[i++] = '\0'; /* terminate the format string */
- }
- }
-
- arg_val = parse_to_comma_and_eval (&promptp);
- if (*promptp == ',')
- promptp++; /* skip past the comma */
- arg_type = check_typedef (VALUE_TYPE (arg_val));
- switch (TYPE_CODE (arg_type))
- {
- case TYPE_CODE_ARRAY:
- elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
- if (TYPE_LENGTH (arg_type) > 0 &&
- TYPE_LENGTH (elt_type) == 1 &&
- TYPE_CODE (elt_type) == TYPE_CODE_INT)
- {
- int len = TYPE_LENGTH (arg_type);
-
- if (VALUE_LAZY (arg_val))
- value_fetch_lazy (arg_val);
- tmp = VALUE_CONTENTS (arg_val);
-
- if (len > available)
- len = available; /* overflow protect */
-
- /* FIXME: how to protect GDB from crashing
- from bad user-supplied format string? */
- if (fmt[0] != 0)
- sprintf (outp, fmt, tmp);
- else
- strncpy (outp, tmp, len);
- outp[len] = '\0';
- }
- break;
- case TYPE_CODE_PTR:
- elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
- addrval = value_as_pointer (arg_val);
-
- if (TYPE_LENGTH (elt_type) == 1 &&
- TYPE_CODE (elt_type) == TYPE_CODE_INT &&
- addrval != 0)
- {
- /* display it as a string */
- char *default_fmt = "%s";
- char *tmp;
- int err = 0;
-
- /* Limiting the number of bytes that the following call
- will read protects us from sprintf overflow later. */
- i = target_read_string (addrval, /* src */
- &tmp, /* dest */
- available, /* len */
- &err);
- if (err) /* read failed */
- error ("%s on target_read", safe_strerror (err));
-
- tmp[i] = '\0'; /* force-terminate string */
- /* FIXME: how to protect GDB from crashing
- from bad user-supplied format string? */
- sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
- tmp);
- free (tmp);
- }
- else
- {
- /* display it as a pointer */
- char *default_fmt = "0x%x";
-
- /* FIXME: how to protect GDB from crashing
- from bad user-supplied format string? */
- if (available >= 16 /*? */ ) /* overflow protect */
- sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
- (long) addrval);
- }
- break;
- case TYPE_CODE_FLT:
- {
- char *default_fmt = "%g";
-
- doubleval = value_as_double (arg_val);
- /* FIXME: how to protect GDB from crashing
- from bad user-supplied format string? */
- if (available >= 16 /*? */ ) /* overflow protect */
- sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
- (double) doubleval);
- break;
- }
- case TYPE_CODE_INT:
- {
- char *default_fmt = "%d";
-
- longval = value_as_long (arg_val);
- /* FIXME: how to protect GDB from crashing
- from bad user-supplied format string? */
- if (available >= 16 /*? */ ) /* overflow protect */
- sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
- (long) longval);
- break;
- }
- case TYPE_CODE_BOOL:
- {
- /* no default format for bool */
- longval = value_as_long (arg_val);
- if (available >= 8 /*? */ ) /* overflow protect */
- {
- if (longval)
- strcpy (outp, "<true>");
- else
- strcpy (outp, "<false>");
- }
- break;
- }
- case TYPE_CODE_ENUM:
- {
- /* no default format for enum */
- longval = value_as_long (arg_val);
- len = TYPE_NFIELDS (arg_type);
- /* find enum name if possible */
- for (i = 0; i < len; i++)
- if (TYPE_FIELD_BITPOS (arg_type, i) == longval)
- break; /* match -- end loop */
-
- if (i < len) /* enum name found */
- {
- char *name = TYPE_FIELD_NAME (arg_type, i);
-
- strncpy (outp, name, available);
- /* in casel available < strlen (name), */
- outp[available] = '\0';
- }
- else
- {
- if (available >= 16 /*? */ ) /* overflow protect */
- sprintf (outp, "%ld", (long) longval);
- }
- break;
- }
- case TYPE_CODE_VOID:
- *outp = '\0';
- break; /* void type -- no output */
- default:
- error ("bad data type at prompt position %d",
- promptp - local_prompt);
- break;
- }
- outp += strlen (outp);
- }
- }
- *outp++ = '\0'; /* terminate prompt string */
- return 1;
- }
-}
-
char *
-get_prompt ()
+get_prompt (void)
{
- static char buf[MAX_PROMPT_SIZE];
-
- if (catch_errors (get_prompt_1, buf, "bad formatted prompt: ",
- RETURN_MASK_ALL))
- {
- return &buf[0]; /* successful formatted prompt */
- }
+ if (event_loop_p)
+ return PROMPT (0);
else
- {
- /* Prompt could not be formatted. */
- if (event_loop_p)
- return PROMPT (0);
- else
- return gdb_prompt_string;
- }
+ return gdb_prompt_string;
}
void
-set_prompt (s)
- char *s;
+set_prompt (char *s)
{
/* ??rehrauer: I don't know why this fails, since it looks as though
assignments to prompt are wrapped in calls to savestring...
if (prompt != NULL)
- free (prompt);
+ xfree (prompt);
*/
if (event_loop_p)
PROMPT (0) = savestring (s, strlen (s));
non-zero if we should quit, zero if we shouldn't. */
int
-quit_confirm ()
+quit_confirm (void)
{
- if (inferior_pid != 0 && target_has_execution)
+ if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
{
char *s;
else
s = "The program is running. Exit anyway? ";
- if (!query (s))
+ if (!query ("%s", s))
return 0;
}
return 1;
}
-/* Quit without asking for confirmation. */
+/* Helper routine for quit_force that requires error handling. */
-void
-quit_force (args, from_tty)
- char *args;
- int from_tty;
+struct qt_args
{
- int exit_code = 0;
-
- /* An optional expression may be used to cause gdb to terminate with the
- value of that expression. */
- if (args)
- {
- value_ptr val = parse_and_eval (args);
+ char *args;
+ int from_tty;
+};
- exit_code = (int) value_as_long (val);
- }
+static int
+quit_target (void *arg)
+{
+ struct qt_args *qt = (struct qt_args *)arg;
- 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);
+ target_detach (qt->args, qt->from_tty);
else
- target_kill ();
+ target_kill ();
}
/* UDI wants this, to kill the TIP. */
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);
+ return 0;
}
-/* Handle the quit command. */
+/* Quit without asking for confirmation. */
void
-quit_command (args, from_tty)
- char *args;
- int from_tty;
+quit_force (char *args, int from_tty)
{
- if (!quit_confirm ())
- error ("Not confirmed.");
- quit_force (args, from_tty);
-}
-
-/* Returns whether GDB is running on a terminal and whether the user
- desires that questions be asked of them on that terminal. */
+ int exit_code = 0;
-int
-input_from_terminal_p ()
-{
- return gdb_has_a_terminal () && (instream == stdin) & caution;
-}
-\f
-/* ARGSUSED */
-static void
-pwd_command (args, from_tty)
- char *args;
- int from_tty;
-{
+ /* An optional expression may be used to cause gdb to terminate with the
+ value of that expression. */
if (args)
- error ("The \"pwd\" command does not take an argument: %s", args);
- getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
-
- if (!STREQ (gdb_dirbuf, current_directory))
- printf_unfiltered ("Working directory %s\n (canonically %s).\n",
- current_directory, gdb_dirbuf);
- else
- printf_unfiltered ("Working directory %s.\n", current_directory);
-}
-
-void
-cd_command (dir, from_tty)
- char *dir;
- int from_tty;
-{
- int len;
- /* Found something other than leading repetitions of "/..". */
- int found_real_path;
- char *p;
-
- /* If the new directory is absolute, repeat is a no-op; if relative,
- repeat might be useful but is more likely to be a mistake. */
- dont_repeat ();
-
- if (dir == 0)
- error_no_arg ("new working directory");
-
- dir = tilde_expand (dir);
- make_cleanup (free, dir);
-
- if (chdir (dir) < 0)
- perror_with_name (dir);
-
-#if defined(_WIN32) || defined(__MSDOS__)
- /* There's too much mess with DOSish names like "d:", "d:.",
- "d:./foo" etc. Instead of having lots of special #ifdef'ed code,
- simply get the canonicalized name of the current directory. */
- dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
-#endif
-
- len = strlen (dir);
- if (SLASH_P (dir[len-1]))
{
- /* Remove the trailing slash unless this is a root directory
- (including a drive letter on non-Unix systems). */
- if (!(len == 1) /* "/" */
-#if defined(_WIN32) || defined(__MSDOS__)
- && !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */
-#endif
- )
- len--;
- }
-
- dir = savestring (dir, len);
- if (ROOTED_P (dir))
- current_directory = dir;
- else
- {
- if (SLASH_P (current_directory[strlen (current_directory) - 1]))
- current_directory = concat (current_directory, dir, NULL);
- else
- current_directory = concat (current_directory, SLASH_STRING, dir, NULL);
- free (dir);
- }
-
- /* Now simplify any occurrences of `.' and `..' in the pathname. */
+ struct value *val = parse_and_eval (args);
- found_real_path = 0;
- for (p = current_directory; *p;)
- {
- if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2])))
- strcpy (p, p + 2);
- else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.'
- && (p[3] == 0 || SLASH_P (p[3])))
- {
- if (found_real_path)
- {
- /* Search backwards for the directory just before the "/.."
- and obliterate it and the "/..". */
- char *q = p;
- while (q != current_directory && !SLASH_P (q[-1]))
- --q;
-
- if (q == current_directory)
- /* current_directory is
- a relative pathname ("can't happen"--leave it alone). */
- ++p;
- else
- {
- strcpy (q - 1, p + 3);
- p = q - 1;
- }
- }
- else
- /* We are dealing with leading repetitions of "/..", for example
- "/../..", which is the Mach super-root. */
- p += 3;
- }
- else
- {
- found_real_path = 1;
- ++p;
- }
+ exit_code = (int) value_as_long (val);
}
- forget_cached_source_info ();
-
- if (from_tty)
- pwd_command ((char *) 0, 1);
-}
-\f
-struct source_cleanup_lines_args
-{
- int old_line;
- char *old_file;
- char *old_pre_error;
- char *old_error_pre_print;
-};
+ /* We want to handle any quit errors and exit regardless. */
+ catch_errors (quit_target, args,
+ "Quitting: ", RETURN_MASK_ALL);
-static void
-source_cleanup_lines (args)
- PTR args;
-{
- struct source_cleanup_lines_args *p =
- (struct source_cleanup_lines_args *) args;
- source_line_number = p->old_line;
- source_file_name = p->old_file;
- source_pre_error = p->old_pre_error;
- error_pre_print = p->old_error_pre_print;
+ exit (exit_code);
}
-/* ARGSUSED */
-void
-source_command (args, from_tty)
- char *args;
- int from_tty;
-{
- FILE *stream;
- struct cleanup *old_cleanups;
- char *file = args;
- struct source_cleanup_lines_args old_lines;
- int needed_length;
-
- if (file == NULL)
- {
- error ("source command requires pathname of file to source.");
- }
-
- file = tilde_expand (file);
- old_cleanups = make_cleanup (free, file);
-
- stream = fopen (file, FOPEN_RT);
- if (!stream)
- {
- if (from_tty)
- perror_with_name (file);
- else
- return;
- }
-
- make_cleanup ((make_cleanup_func) fclose, stream);
-
- old_lines.old_line = source_line_number;
- old_lines.old_file = source_file_name;
- old_lines.old_pre_error = source_pre_error;
- old_lines.old_error_pre_print = error_pre_print;
- make_cleanup (source_cleanup_lines, &old_lines);
- source_line_number = 0;
- source_file_name = file;
- source_pre_error = error_pre_print == NULL ? "" : error_pre_print;
- source_pre_error = savestring (source_pre_error, strlen (source_pre_error));
- make_cleanup (free, source_pre_error);
- /* This will get set every time we read a line. So it won't stay "" for
- long. */
- error_pre_print = "";
-
- needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80;
- if (source_error_allocated < needed_length)
- {
- source_error_allocated *= 2;
- if (source_error_allocated < needed_length)
- source_error_allocated = needed_length;
- if (source_error == NULL)
- source_error = xmalloc (source_error_allocated);
- else
- source_error = xrealloc (source_error, source_error_allocated);
- }
-
- read_command_file (stream);
-
- do_cleanups (old_cleanups);
-}
+/* Returns whether GDB is running on a terminal and whether the user
+ desires that questions be asked of them on that terminal. */
-/* ARGSUSED */
-static void
-echo_command (text, from_tty)
- char *text;
- int from_tty;
+int
+input_from_terminal_p (void)
{
- char *p = text;
- register int c;
-
- if (text)
- while ((c = *p++) != '\0')
- {
- if (c == '\\')
- {
- /* \ at end of argument is used after spaces
- so they won't be lost. */
- if (*p == 0)
- return;
-
- c = parse_escape (&p);
- if (c >= 0)
- printf_filtered ("%c", c);
- }
- else
- printf_filtered ("%c", c);
- }
-
- /* Force this output to appear now. */
- wrap_here ("");
- gdb_flush (gdb_stdout);
+ return gdb_has_a_terminal () && (instream == stdin) & caution;
}
-
-/* ARGSUSED */
+\f
static void
-dont_repeat_command (ignored, from_tty)
- char *ignored;
- int from_tty;
+dont_repeat_command (char *ignored, int from_tty)
{
*line = 0; /* Can't call dont_repeat here because we're not
necessarily reading from stdin. */
/* Number of commands to print in each call to show_commands. */
#define Hist_print 10
-static void
-show_commands (args, from_tty)
- char *args;
- int from_tty;
+void
+show_commands (char *args, int from_tty)
{
/* Index for history commands. Relative to history_base. */
int offset;
than the number of the last command). Relative to history_base. */
int hist_len;
- extern HIST_ENTRY *history_get PARAMS ((int));
-
/* Print out some of the commands from the command history. */
/* First determine the length of the history list. */
hist_len = history_size;
;
else
/* "info editing <exp>" should print around command number <exp>. */
- num = (parse_and_eval_address (args) - history_base) - Hist_print / 2;
+ num = (parse_and_eval_long (args) - history_base) - Hist_print / 2;
}
/* "show commands" means print the last Hist_print commands. */
else
}
/* Called by do_setshow_command. */
-/* ARGSUSED */
static void
-set_history_size_command (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+set_history_size_command (char *args, int from_tty, struct cmd_list_element *c)
{
if (history_size == INT_MAX)
unstifle_history ();
}
}
-/* ARGSUSED */
-static void
-set_history (args, from_tty)
- char *args;
- int from_tty;
+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);
}
-/* ARGSUSED */
-static void
-show_history (args, from_tty)
- char *args;
- int from_tty;
+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. */
-/* ARGSUSED */
-static void
-set_verbose (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+void
+set_verbose (char *args, int from_tty, struct cmd_list_element *c)
{
char *cmdname = "verbose";
struct cmd_list_element *showcmd;
}
}
-static void
-float_handler (signo)
- 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.");
-}
-\f
-
-static void
-init_cmd_lists ()
-{
- cmdlist = NULL;
- infolist = NULL;
- enablelist = NULL;
- disablelist = NULL;
- togglelist = NULL;
- stoplist = NULL;
- deletelist = NULL;
- enablebreaklist = NULL;
- setlist = NULL;
- unsetlist = NULL;
- showlist = NULL;
- sethistlist = NULL;
- showhistlist = NULL;
- unsethistlist = NULL;
- maintenancelist = NULL;
- maintenanceinfolist = NULL;
- maintenanceprintlist = NULL;
- setprintlist = NULL;
- showprintlist = NULL;
- setchecklist = NULL;
- showchecklist = NULL;
-}
-
/* 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
*/
void
-init_history ()
+init_history (void)
{
char *tmpenv;
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", NULL);
+ /* No leading dots in file names are allowed on MSDOS. */
+ history_filename = concat (current_directory, "/_gdb_history", NULL);
#else
history_filename = concat (current_directory, "/.gdb_history", NULL);
#endif
}
static void
-init_main ()
+init_main (void)
{
struct cmd_list_element *c;
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. */
/* Set the important stuff up for command editing. */
command_editing_p = 1;
write_history_p = 0;
/* Setup important stuff for command line editing. */
- rl_completion_entry_function = (int (*)()) readline_line_completion_function;
- rl_completer_word_break_characters = gdb_completer_word_break_characters;
- rl_completer_quote_characters = gdb_completer_quote_characters;
+ rl_completion_entry_function = readline_line_completion_function;
+ rl_completer_word_break_characters =
+ get_gdb_completer_word_break_characters ();
+ rl_completer_quote_characters = get_gdb_completer_quote_characters ();
rl_readline_name = "gdb";
+ rl_terminal_name = getenv ("TERM");
- /* Define the classes of commands.
- They will appear in the help list in the reverse of this order. */
-
- add_cmd ("internals", class_maintenance, NO_FUNCTION,
- "Maintenance commands.\n\
-Some gdb commands are provided just for use by gdb maintainers.\n\
-These commands are subject to frequent change, and may not be as\n\
-well documented as user commands.",
- &cmdlist);
- add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist);
- add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist);
- add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\
-The commands in this class are those defined by the user.\n\
-Use the \"define\" command to define a command.", &cmdlist);
- add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist);
- if (!dbx_commands)
- add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist);
- add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist);
- add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist);
- add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist);
- add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\
-The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
-counting from zero for the innermost (currently executing) frame.\n\n\
-At any time gdb identifies one frame as the \"selected\" frame.\n\
-Variable lookups are done with respect to the selected frame.\n\
-When the program being debugged stops, gdb selects the innermost frame.\n\
-The commands below can be used to select other frames by number or address.",
- &cmdlist);
- add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist);
-
- add_com ("pwd", class_files, pwd_command,
- "Print working directory. This is used for your program as well.");
- c = add_cmd ("cd", class_files, cd_command,
- "Set working directory to DIR for debugger and program being debugged.\n\
-The change does not take effect for the program being debugged\n\
-until the next time it is started.", &cmdlist);
- c->completer = filename_completer;
+ /* 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);
/* The set prompt command is different depending whether or not the
async version is run. NOTE: this difference is going to
(char *) &new_async_prompt, "Set gdb's prompt",
&setlist);
add_show_from_set (c, &showlist);
- c->function.sfunc = set_async_prompt;
+ set_cmd_sfunc (c, set_async_prompt);
}
- add_show_from_set
- (add_set_cmd ("prompt-escape-char", class_support, var_zinteger,
- (char *) &gdb_prompt_escape,
- "Set escape character for formatting of gdb's prompt",
- &setlist),
- &showlist);
-
- add_com ("echo", class_support, echo_command,
- "Print a constant string. Give string as argument.\n\
-C escape sequences may be used in the argument.\n\
-No newline is added at the end of the argument;\n\
-use \"\\n\" if you want a newline to be printed.\n\
-Since leading and trailing whitespace are ignored in command arguments,\n\
-if you want to print some you must use \"\\\" before leading whitespace\n\
-to be printed or after trailing whitespace.");
- add_com ("document", class_support, document_command,
- "Document a user-defined command.\n\
-Give command name as argument. Give documentation on following lines.\n\
-End with a line of just \"end\".");
- add_com ("define", class_support, define_command,
- "Define a new command name. Command name is argument.\n\
-Definition appears on following lines, one command per line.\n\
-End with a line of just \"end\".\n\
-Use the \"document\" command to give documentation for the new command.\n\
-Commands defined in this way may have up to ten arguments.");
-
-#ifdef __STDC__
- c = add_cmd ("source", class_support, source_command,
- "Read commands from a file named FILE.\n\
-Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\
-when gdb is started.", &cmdlist);
-#else
- /* Punt file name, we can't help it easily. */
- c = add_cmd ("source", class_support, source_command,
- "Read commands from a file named FILE.\n\
-Note that the file \".gdbinit\" is read automatically in this way\n\
-when gdb is started.", &cmdlist);
-#endif
- c->completer = filename_completer;
-
- add_com ("quit", class_support, quit_command, "Exit gdb.");
- add_com ("help", class_support, help_command, "Print list of commands.");
- add_com_alias ("q", "quit", class_support, 1);
- add_com_alias ("h", "help", class_support, 1);
-
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\
hitting return.");
- c = add_set_cmd ("verbose", class_support, var_boolean, (char *) &info_verbose,
- "Set ",
- &setlist),
- add_show_from_set (c, &showlist);
- c->function.sfunc = set_verbose;
- set_verbose (NULL, 0, c);
-
/* The set editing command is different depending whether or not the
async version is run. NOTE: this difference is going to disappear
as we make the event loop be the default engine of gdb. */
EMACS-like or VI-like commands like control-P or ESC.", &setlist);
add_show_from_set (c, &showlist);
- c->function.sfunc = set_async_editing_command;
+ set_cmd_sfunc (c, set_async_editing_command);
}
- add_prefix_cmd ("history", class_support, set_history,
- "Generic command for setting command history parameters.",
- &sethistlist, "set history ", 0, &setlist);
- add_prefix_cmd ("history", class_support, show_history,
- "Generic command for showing command history parameters.",
- &showhistlist, "show history ", 0, &showlist);
-
- add_show_from_set
- (add_set_cmd ("expansion", no_class, var_boolean, (char *) &history_expansion_p,
- "Set history expansion on command input.\n\
-Without an argument, history expansion is enabled.", &sethistlist),
- &showhistlist);
-
add_show_from_set
(add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p,
"Set saving of the history record on exit.\n\
&showhistlist);
c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size,
- "Set the size of the command history, \n\
+ "Set the size of the command history,\n\
ie. the number of previous commands to keep a record of.", &sethistlist);
add_show_from_set (c, &showhistlist);
- c->function.sfunc = set_history_size_command;
+ set_cmd_sfunc (c, 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);
+ set_cmd_completer (c, filename_completer);
+ add_show_from_set (c, &showhistlist);
add_show_from_set
(add_set_cmd ("confirm", class_support, var_boolean,
&setlist),
&showlist);
- add_prefix_cmd ("info", class_info, info_command,
- "Generic command for showing things about the program being debugged.",
- &infolist, "info ", 0, &cmdlist);
- add_com_alias ("i", "info", class_info, 1);
-
- add_com ("complete", class_obscure, complete_command,
- "List the completions for the rest of the line as a command.");
-
- add_prefix_cmd ("show", class_info, show_command,
- "Generic command for showing things about the debugger.",
- &showlist, "show ", 0, &cmdlist);
- /* Another way to get at the same thing. */
- add_info ("set", show_command, "Show all GDB settings.");
-
- add_cmd ("commands", no_class, show_commands,
- "Show the history of commands you typed.\n\
-You can supply a command number to start with, or a `+' to start after\n\
-the previous command number shown.",
- &showlist);
-
- add_cmd ("version", no_class, show_version,
- "Show what version of GDB this is.", &showlist);
-
- add_com ("while", class_support, while_command,
- "Execute nested commands WHILE the conditional expression is non zero.\n\
-The conditional expression must follow the word `while' and must in turn be\n\
-followed by a new line. The nested commands must be entered one per line,\n\
-and should be terminated by the word `end'.");
-
- add_com ("if", class_support, if_command,
- "Execute nested commands once IF the conditional expression is non zero.\n\
-The conditional expression must follow the word `if' and must in turn be\n\
-followed by a new line. The nested commands must be entered one per line,\n\
-and should be terminated by the word 'else' or `end'. If an else clause\n\
-is used, the same rules apply to its nested commands as to the first ones.");
-
- /* If target is open when baud changes, it doesn't take effect until the
- next open (I think, not sure). */
- add_show_from_set (add_set_cmd ("remotebaud", no_class,
- var_zinteger, (char *) &baud_rate,
- "Set baud rate for remote serial I/O.\n\
-This value is used to set the speed of the serial port when debugging\n\
-using remote targets.", &setlist),
- &showlist);
-
- add_show_from_set (
- add_set_cmd ("remotedebug", no_class, var_zinteger, (char *) &remote_debug,
- "Set debugging of remote protocol.\n\
-When enabled, each packet sent or received with the remote target\n\
-is displayed.", &setlist),
- &showlist);
-
- add_show_from_set (
- add_set_cmd ("remotetimeout", no_class, var_integer, (char *) &remote_timeout,
- "Set timeout limit to wait for target to respond.\n\
-This value is used to set the time limit for gdb to wait for a response\n\
-from the target.", &setlist),
- &showlist);
-
/* The set annotate command is different depending whether or not
the async version is run. NOTE: this difference is going to
disappear as we make the event loop be the default engine of
2 == output annotated suitably for use by programs that control GDB.",
&setlist);
add_show_from_set (c, &showlist);
- c->function.sfunc = set_async_annotation_level;
+ set_cmd_sfunc (c, set_async_annotation_level);
}
if (event_loop_p)
{
&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. */
+
+ /* Allow another UI to initialize. If the UI fails to initialize, and
+ it wants GDB to revert to the CLI, it should clear init_ui_hook. */
+ if (init_ui_hook)
+ init_ui_hook (argv0);
+}
projects / deliverable / binutils-gdb.git / blobdiff