64cdedadad
* top.c (quit_cover, float_handler): Move definition up before use. (gdb_init): Move to end of file, to avoid calls to not yet defined functions. Delete prototypes.
2037 lines
59 KiB
C
2037 lines
59 KiB
C
/* Top level stuff for GDB, the GNU debugger.
|
||
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
|
||
1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "gdbcmd.h"
|
||
#include "call-cmds.h"
|
||
#include "symtab.h"
|
||
#include "inferior.h"
|
||
#include <signal.h>
|
||
#include "target.h"
|
||
#include "breakpoint.h"
|
||
#include "gdbtypes.h"
|
||
#include "expression.h"
|
||
#include "value.h"
|
||
#include "language.h"
|
||
#include "terminal.h" /* For job_control. */
|
||
#include "annotate.h"
|
||
#include "completer.h"
|
||
#include "top.h"
|
||
#include "version.h"
|
||
|
||
/* readline include files */
|
||
#include <readline/readline.h>
|
||
#include <readline/history.h>
|
||
|
||
/* readline defines this. */
|
||
#undef savestring
|
||
|
||
#include <sys/types.h>
|
||
|
||
#include <setjmp.h>
|
||
|
||
#include "event-top.h"
|
||
#include "gdb_string.h"
|
||
#include "gdb_stat.h"
|
||
#include <ctype.h>
|
||
#ifdef UI_OUT
|
||
#include "ui-out.h"
|
||
#include "cli-out.h"
|
||
#endif
|
||
|
||
/* From completer.c */
|
||
|
||
extern int is_complete_command (void (*func) (char *args, int from_tty));
|
||
|
||
/* From cli/cli-cmds.c */
|
||
|
||
extern void init_cmd_lists (void);
|
||
|
||
extern void init_cli_cmds (void);
|
||
|
||
extern void execute_user_command (struct cmd_list_element *c, char *args);
|
||
|
||
/* From cli/cli-setshow.c */
|
||
|
||
extern void do_setshow_command (char *, int, struct cmd_list_element *);
|
||
|
||
/* Default command line prompt. This is overriden in some configs. */
|
||
|
||
#ifndef DEFAULT_PROMPT
|
||
#define DEFAULT_PROMPT "(gdb) "
|
||
#endif
|
||
|
||
/* Initialization file name for gdb. This is overridden in some configs. */
|
||
|
||
#ifndef GDBINIT_FILENAME
|
||
#define GDBINIT_FILENAME ".gdbinit"
|
||
#endif
|
||
char gdbinit[] = GDBINIT_FILENAME;
|
||
|
||
int inhibit_gdbinit = 0;
|
||
|
||
/* If nonzero, and GDB has been configured to be able to use windows,
|
||
attempt to open them upon startup. */
|
||
|
||
int use_windows = 1;
|
||
|
||
extern char lang_frame_mismatch_warn[]; /* language.c */
|
||
|
||
/* Flag for whether we want all the "from_tty" gubbish printed. */
|
||
|
||
int caution = 1; /* Default is yes, sigh. */
|
||
|
||
/* stdio stream that command input is being read from. Set to stdin normally.
|
||
Set by source_command to the file we are sourcing. Set to NULL if we are
|
||
executing a user-defined command or interacting via a GUI. */
|
||
|
||
FILE *instream;
|
||
|
||
/* Current working directory. */
|
||
|
||
char *current_directory;
|
||
|
||
/* The directory name is actually stored here (usually). */
|
||
char gdb_dirbuf[1024];
|
||
|
||
/* Function to call before reading a command, if nonzero.
|
||
The function receives two args: an input stream,
|
||
and a prompt string. */
|
||
|
||
void (*window_hook) (FILE *, char *);
|
||
|
||
int epoch_interface;
|
||
int xgdb_verbose;
|
||
|
||
/* gdb prints this when reading a command interactively */
|
||
static char *gdb_prompt_string; /* the global prompt string */
|
||
extern char *get_prompt (void); /* access function for prompt string */
|
||
|
||
/* Buffer used for reading command lines, and the size
|
||
allocated for it so far. */
|
||
|
||
char *line;
|
||
int linesize = 100;
|
||
|
||
/* Nonzero if the current command is modified by "server ". This
|
||
affects things like recording into the command history, commands
|
||
repeating on RETURN, etc. This is so a user interface (emacs, GUI,
|
||
whatever) can issue its own commands and also send along commands
|
||
from the user, and have the user not notice that the user interface
|
||
is issuing commands too. */
|
||
int server_command;
|
||
|
||
/* Baud rate specified for talking to serial target systems. Default
|
||
is left as -1, so targets can choose their own defaults. */
|
||
/* FIXME: This means that "show remotebaud" and gr_files_info can print -1
|
||
or (unsigned int)-1. This is a Bad User Interface. */
|
||
|
||
int baud_rate = -1;
|
||
|
||
/* Timeout limit for response from target. */
|
||
|
||
/* The default value has been changed many times over the years. It
|
||
was originally 5 seconds. But that was thought to be a long time
|
||
to sit and wait, so it was changed to 2 seconds. That was thought
|
||
to be plenty unless the connection was going through some terminal
|
||
server or multiplexer or other form of hairy serial connection.
|
||
|
||
In mid-1996, remote_timeout was moved from remote.c to top.c and
|
||
it began being used in other remote-* targets. It appears that the
|
||
default was changed to 20 seconds at that time, perhaps because the
|
||
Hitachi E7000 ICE didn't always respond in a timely manner.
|
||
|
||
But if 5 seconds is a long time to sit and wait for retransmissions,
|
||
20 seconds is far worse. This demonstrates the difficulty of using
|
||
a single variable for all protocol timeouts.
|
||
|
||
As remote.c is used much more than remote-e7000.c, it was changed
|
||
back to 2 seconds in 1999. */
|
||
|
||
int remote_timeout = 2;
|
||
|
||
/* Non-zero tells remote* modules to output debugging info. */
|
||
|
||
int remote_debug = 0;
|
||
|
||
/* Non-zero means the target is running. Note: this is different from
|
||
saying that there is an active target and we are stopped at a
|
||
breakpoint, for instance. This is a real indicator whether the
|
||
target is off and running, which gdb is doing something else. */
|
||
int target_executing = 0;
|
||
|
||
/* Level of control structure. */
|
||
static int control_level;
|
||
|
||
/* 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 (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
|
||
#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. */
|
||
|
||
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) (int);
|
||
|
||
/* Called instead of command_loop at top level. Can be invoked via
|
||
return_to_top_level. */
|
||
|
||
void (*command_loop_hook) (void);
|
||
|
||
|
||
/* Called from print_frame_info to list the line we stopped in. */
|
||
|
||
void (*print_frame_info_listing_hook) (struct symtab * s, int line,
|
||
int stopline, int noerror);
|
||
/* Replaces most of query. */
|
||
|
||
int (*query_hook) (const char *, va_list);
|
||
|
||
/* Replaces most of warning. */
|
||
|
||
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
|
||
string that might be (for example) a message for the user to type in a
|
||
sequence of commands to be executed at a breakpoint. If this function
|
||
calls back to a GUI, it might take this opportunity to pop up a text
|
||
interaction window with this message. Next, readline_hook is called
|
||
with a prompt that is emitted prior to collecting the user input.
|
||
It can be called multiple times. Finally, readline_end_hook is called
|
||
to notify the GUI that we are done with the interaction window and it
|
||
can close it. */
|
||
|
||
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) (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) (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) (void);
|
||
|
||
/* Called when the registers have changed, as a hint to a GUI
|
||
to minimize window update. */
|
||
|
||
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) (int regno);
|
||
|
||
/* Tell the GUI someone changed LEN bytes of memory at ADDR */
|
||
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. */
|
||
|
||
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) (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) (struct cmd_list_element * c);
|
||
|
||
/* Called when the current thread changes. Argument is thread 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) (void) ATTR_NORETURN;
|
||
|
||
|
||
/* 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)
|
||
#else
|
||
#define SIGJMP_BUF jmp_buf
|
||
#define SIGSETJMP(buf) setjmp(buf)
|
||
#define SIGLONGJMP(buf,val) longjmp(buf,val)
|
||
#endif
|
||
|
||
/* Where to go for return_to_top_level. */
|
||
static SIGJMP_BUF *catch_return;
|
||
|
||
/* Return for reason REASON to the nearest containing catch_errors(). */
|
||
|
||
NORETURN void
|
||
return_to_top_level (enum return_reason reason)
|
||
{
|
||
quit_flag = 0;
|
||
immediate_quit = 0;
|
||
|
||
/* Perhaps it would be cleaner to do this via the cleanup chain (not sure
|
||
I can think of a reason why that is vital, though). */
|
||
bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */
|
||
|
||
disable_current_display ();
|
||
do_cleanups (ALL_CLEANUPS);
|
||
if (event_loop_p && target_can_async_p () && !target_executing)
|
||
do_exec_cleanups (ALL_CLEANUPS);
|
||
if (event_loop_p && sync_execution)
|
||
do_exec_error_cleanups (ALL_CLEANUPS);
|
||
|
||
if (annotation_level > 1)
|
||
switch (reason)
|
||
{
|
||
case RETURN_QUIT:
|
||
annotate_quit ();
|
||
break;
|
||
case RETURN_ERROR:
|
||
annotate_error ();
|
||
break;
|
||
}
|
||
|
||
/* Jump to the containing catch_errors() call, communicating REASON
|
||
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);
|
||
}
|
||
|
||
/* 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.
|
||
|
||
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).
|
||
This is an OK restriction; with very few exceptions immediate_quit can
|
||
be replaced by judicious use of QUIT.
|
||
|
||
MASK specifies what to catch; it is normally set to
|
||
RETURN_MASK_ALL, if for no other reason than that the code which
|
||
calls catch_errors might not be set up to deal with a quit which
|
||
isn't caught. But if the code can deal with it, it generally
|
||
should be RETURN_MASK_ERROR, unless for some reason it is more
|
||
useful to abort only the portion of the operation inside the
|
||
catch_errors. Note that quit should return to the command line
|
||
fairly quickly, even if some further processing is being done. */
|
||
|
||
/* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with
|
||
error() et.al. could maintain a set of flags that indicate the the
|
||
current state of each of the longjmp buffers. This would give the
|
||
longjmp code the chance to detect a longjmp botch (before it gets
|
||
to longjmperror()). Prior to 1999-11-05 this wasn't possible as
|
||
code also randomly used a SET_TOP_LEVEL macro that directly
|
||
initialize the longjmp buffers. */
|
||
|
||
/* 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 (catch_errors_ftype *func, PTR args, 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;
|
||
|
||
/* Return value from SIGSETJMP(): enum return_reason if error or
|
||
quit caught, 0 otherwise. */
|
||
int caught;
|
||
|
||
/* Override error/quit messages during FUNC. */
|
||
|
||
saved_error_pre_print = error_pre_print;
|
||
saved_quit_pre_print = quit_pre_print;
|
||
|
||
if (mask & RETURN_MASK_ERROR)
|
||
error_pre_print = errstring;
|
||
if (mask & RETURN_MASK_QUIT)
|
||
quit_pre_print = errstring;
|
||
|
||
/* Prevent error/quit during FUNC from calling cleanups established
|
||
prior to here. */
|
||
|
||
saved_cleanup_chain = save_cleanups ();
|
||
|
||
/* Call FUNC, catching error/quit events. */
|
||
|
||
saved_catch = catch_return;
|
||
catch_return = &catch;
|
||
caught = SIGSETJMP (catch);
|
||
if (!caught)
|
||
val = (*func) (args);
|
||
else
|
||
val = 0;
|
||
catch_return = saved_catch;
|
||
|
||
/* 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. 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_cleanups (saved_cleanup_chain);
|
||
|
||
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. */
|
||
|
||
if (!caught)
|
||
return val;
|
||
|
||
/* If 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.
|
||
|
||
A possible fix is to add a new interface, catch_event(), that
|
||
returns enum return_reason after catching an error or a quit.
|
||
|
||
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.
|
||
|
||
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. */
|
||
|
||
return 0;
|
||
}
|
||
|
||
struct captured_command_args
|
||
{
|
||
catch_command_errors_ftype *command;
|
||
char *arg;
|
||
int from_tty;
|
||
};
|
||
|
||
static int
|
||
do_captured_command (void *data)
|
||
{
|
||
struct captured_command_args *context = data;
|
||
context->command (context->arg, context->from_tty);
|
||
/* 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 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.. */
|
||
do_cleanups (ALL_CLEANUPS);
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
catch_command_errors (catch_command_errors_ftype * command,
|
||
char *arg, int from_tty, return_mask mask)
|
||
{
|
||
struct captured_command_args args;
|
||
args.command = command;
|
||
args.arg = arg;
|
||
args.from_tty = from_tty;
|
||
return catch_errors (do_captured_command, &args, "", mask);
|
||
}
|
||
|
||
|
||
/* Handler for SIGHUP. */
|
||
|
||
#ifdef SIGHUP
|
||
/* Just a little helper function for disconnect(). */
|
||
|
||
/* NOTE 1999-04-29: This function will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ int
|
||
quit_cover (PTR s)
|
||
{
|
||
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 */
|
||
|
||
/* Line number we are currently in in a file which is being sourced. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ int source_line_number;
|
||
|
||
/* Name of the file we are sourcing. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ char *source_file_name;
|
||
|
||
/* Buffer containing the error_pre_print used by the source stuff.
|
||
Malloc'd. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ char *source_error;
|
||
static int source_error_allocated;
|
||
|
||
/* Something to glom on to the start of error_pre_print if source_file_name
|
||
is set. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ char *source_pre_error;
|
||
|
||
/* Clean up on error during a "source" command (or execution of a
|
||
user-defined command). */
|
||
|
||
void
|
||
do_restore_instream_cleanup (void *stream)
|
||
{
|
||
/* Restore the previous input stream. */
|
||
instream = stream;
|
||
}
|
||
|
||
/* Read commands from STREAM. */
|
||
void
|
||
read_command_file (FILE *stream)
|
||
{
|
||
struct cleanup *cleanups;
|
||
|
||
cleanups = make_cleanup (do_restore_instream_cleanup, instream);
|
||
instream = stream;
|
||
command_loop ();
|
||
do_cleanups (cleanups);
|
||
}
|
||
|
||
extern void init_proc (void);
|
||
|
||
void (*pre_init_ui_hook) (void);
|
||
|
||
#ifdef __MSDOS__
|
||
void
|
||
do_chdir_cleanup (void *old_dir)
|
||
{
|
||
chdir (old_dir);
|
||
xfree (old_dir);
|
||
}
|
||
#endif
|
||
|
||
/* Execute the line P as a command.
|
||
Pass FROM_TTY as second argument to the defining function. */
|
||
|
||
void
|
||
execute_command (char *p, int from_tty)
|
||
{
|
||
register struct cmd_list_element *c;
|
||
register enum language flang;
|
||
static int warned = 0;
|
||
char *line;
|
||
/* FIXME: These should really be in an appropriate header file */
|
||
extern void serial_log_command (const char *);
|
||
|
||
free_all_values ();
|
||
|
||
/* Force cleanup of any alloca areas if using C alloca instead of
|
||
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;
|
||
line = p;
|
||
|
||
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
|
||
&& !is_complete_command (c->function.cfunc))
|
||
{
|
||
p = arg + strlen (arg) - 1;
|
||
while (p >= arg && (*p == ' ' || *p == '\t'))
|
||
p--;
|
||
*(p + 1) = '\0';
|
||
}
|
||
|
||
/* If this command has been pre-hooked, run the hook first. */
|
||
if ((c->hook_pre) && (!c->hook_in))
|
||
{
|
||
c->hook_in = 1; /* Prevent recursive hooking */
|
||
execute_user_command (c->hook_pre, (char *) 0);
|
||
c->hook_in = 0; /* Allow hook to work again once it is complete */
|
||
}
|
||
|
||
if (c->flags & DEPRECATED_WARN_USER)
|
||
deprecated_cmd_warning (&line);
|
||
|
||
if (c->class == class_user)
|
||
execute_user_command (c, arg);
|
||
else if (c->type == set_cmd || c->type == show_cmd)
|
||
do_setshow_command (arg, from_tty & caution, c);
|
||
else if (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);
|
||
|
||
/* If this command has been post-hooked, run the hook last. */
|
||
if ((c->hook_post) && (!c->hook_in))
|
||
{
|
||
c->hook_in = 1; /* Prevent recursive hooking */
|
||
execute_user_command (c->hook_post, (char *) 0);
|
||
c->hook_in = 0; /* allow hook to work again once it is complete */
|
||
}
|
||
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
|
||
/* Warn the user if the working language does not match the
|
||
language of the current frame. Only warn the user if we are
|
||
actually running the program, i.e. there is a stack. */
|
||
/* FIXME: This should be cacheing the frame and only running when
|
||
the frame changes. */
|
||
|
||
if (target_has_stack)
|
||
{
|
||
flang = get_frame_language ();
|
||
if (!warned
|
||
&& flang != language_unknown
|
||
&& flang != current_language->la_language)
|
||
{
|
||
printf_filtered ("%s\n", lang_frame_mismatch_warn);
|
||
warned = 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Read commands from `instream' and execute them
|
||
until end of file or error reading instream. */
|
||
|
||
void
|
||
command_loop (void)
|
||
{
|
||
struct cleanup *old_chain;
|
||
char *command;
|
||
int stdin_is_tty = ISATTY (stdin);
|
||
long time_at_cmd_start;
|
||
#ifdef HAVE_SBRK
|
||
long space_at_cmd_start = 0;
|
||
#endif
|
||
extern int display_time;
|
||
extern int display_space;
|
||
|
||
while (instream && !feof (instream))
|
||
{
|
||
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 (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 (command == 0)
|
||
return;
|
||
|
||
time_at_cmd_start = get_run_time ();
|
||
|
||
if (display_space)
|
||
{
|
||
#ifdef HAVE_SBRK
|
||
extern char **environ;
|
||
char *lim = (char *) sbrk (0);
|
||
|
||
space_at_cmd_start = (long) (lim - (char *) &environ);
|
||
#endif
|
||
}
|
||
|
||
execute_command (command, instream == stdin);
|
||
/* Do any commands attached to breakpoint we stopped at. */
|
||
bpstat_do_actions (&stop_bpstat);
|
||
do_cleanups (old_chain);
|
||
|
||
if (display_time)
|
||
{
|
||
long cmd_time = get_run_time () - time_at_cmd_start;
|
||
|
||
printf_unfiltered ("Command execution time: %ld.%06ld\n",
|
||
cmd_time / 1000000, cmd_time % 1000000);
|
||
}
|
||
|
||
if (display_space)
|
||
{
|
||
#ifdef HAVE_SBRK
|
||
extern char **environ;
|
||
char *lim = (char *) sbrk (0);
|
||
long space_now = lim - (char *) &environ;
|
||
long space_diff = space_now - space_at_cmd_start;
|
||
|
||
printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
|
||
space_now,
|
||
(space_diff >= 0 ? '+' : '-'),
|
||
space_diff);
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Read commands from `instream' and execute them until end of file or
|
||
error reading instream. This command loop doesnt care about any
|
||
such things as displaying time and space usage. If the user asks
|
||
for those, they won't work. */
|
||
void
|
||
simplified_command_loop (char *(*read_input_func) (char *),
|
||
void (*execute_command_func) (char *, int))
|
||
{
|
||
struct cleanup *old_chain;
|
||
char *command;
|
||
int stdin_is_tty = ISATTY (stdin);
|
||
|
||
while (instream && !feof (instream))
|
||
{
|
||
quit_flag = 0;
|
||
if (instream == stdin && stdin_is_tty)
|
||
reinitialize_more_filter ();
|
||
old_chain = make_cleanup (null_cleanup, 0);
|
||
|
||
/* Get a command-line. */
|
||
command = (*read_input_func) (instream == stdin ?
|
||
get_prompt () : (char *) NULL);
|
||
|
||
if (command == 0)
|
||
return;
|
||
|
||
(*execute_command_func) (command, instream == stdin);
|
||
|
||
/* Do any commands attached to breakpoint we stopped at. */
|
||
bpstat_do_actions (&stop_bpstat);
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
}
|
||
|
||
/* Commands call this if they do not want to be repeated by null lines. */
|
||
|
||
void
|
||
dont_repeat (void)
|
||
{
|
||
if (server_command)
|
||
return;
|
||
|
||
/* If we aren't reading from standard input, we are saving the last
|
||
thing read from stdin in line and don't want to delete it. Null lines
|
||
won't repeat here in any case. */
|
||
if (instream == stdin)
|
||
*line = 0;
|
||
}
|
||
|
||
/* Read a line from the stream "instream" without command line editing.
|
||
|
||
It prints PROMPT_ARG once at the start.
|
||
Action is compatible with "readline", e.g. space for the result is
|
||
malloc'd and should be freed by the caller.
|
||
|
||
A NULL return means end of file. */
|
||
char *
|
||
gdb_readline (char *prompt_arg)
|
||
{
|
||
int c;
|
||
char *result;
|
||
int input_index = 0;
|
||
int result_size = 80;
|
||
|
||
if (prompt_arg)
|
||
{
|
||
/* Don't use a _filtered function here. It causes the assumed
|
||
character position to be off, since the newline we read from
|
||
the user is not accounted for. */
|
||
fputs_unfiltered (prompt_arg, gdb_stdout);
|
||
/* OBSOLETE #ifdef MPW */
|
||
/* OBSOLETE Move to a new line so the entered line doesn't have a prompt */
|
||
/* OBSOLETE on the front of it. */
|
||
/* OBSOLETE fputs_unfiltered ("\n", gdb_stdout); */
|
||
/* OBSOLETE #endif *//* MPW */
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
result = (char *) xmalloc (result_size);
|
||
|
||
while (1)
|
||
{
|
||
/* Read from stdin if we are executing a user defined command.
|
||
This is the right thing for prompt_for_continue, at least. */
|
||
c = fgetc (instream ? instream : stdin);
|
||
|
||
if (c == EOF)
|
||
{
|
||
if (input_index > 0)
|
||
/* The last line does not end with a newline. Return it, and
|
||
if we are called again fgetc will still return EOF and
|
||
we'll return NULL then. */
|
||
break;
|
||
xfree (result);
|
||
return NULL;
|
||
}
|
||
|
||
if (c == '\n')
|
||
#ifndef CRLF_SOURCE_FILES
|
||
break;
|
||
#else
|
||
{
|
||
if (input_index > 0 && result[input_index - 1] == '\r')
|
||
input_index--;
|
||
break;
|
||
}
|
||
#endif
|
||
|
||
result[input_index++] = c;
|
||
while (input_index >= result_size)
|
||
{
|
||
result_size *= 2;
|
||
result = (char *) xrealloc (result, result_size);
|
||
}
|
||
}
|
||
|
||
result[input_index++] = '\0';
|
||
return result;
|
||
}
|
||
|
||
/* Variables which control command line editing and history
|
||
substitution. These variables are given default values at the end
|
||
of this file. */
|
||
static int command_editing_p;
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ int history_expansion_p;
|
||
static int write_history_p;
|
||
static int history_size;
|
||
static char *history_filename;
|
||
|
||
|
||
#ifdef STOP_SIGNAL
|
||
static void
|
||
stop_sig (int signo)
|
||
{
|
||
#if STOP_SIGNAL == SIGTSTP
|
||
signal (SIGTSTP, SIG_DFL);
|
||
sigsetmask (0);
|
||
kill (getpid (), SIGTSTP);
|
||
signal (SIGTSTP, stop_sig);
|
||
#else
|
||
signal (STOP_SIGNAL, stop_sig);
|
||
#endif
|
||
printf_unfiltered ("%s", get_prompt ());
|
||
gdb_flush (gdb_stdout);
|
||
|
||
/* Forget about any previous command -- null line now will do nothing. */
|
||
dont_repeat ();
|
||
}
|
||
#endif /* STOP_SIGNAL */
|
||
|
||
/* Initialize signal handlers. */
|
||
static void
|
||
float_handler (int signo)
|
||
{
|
||
/* This message is based on ANSI C, section 4.7. Note that integer
|
||
divide by zero causes this, so "float" is a misnomer. */
|
||
signal (SIGFPE, float_handler);
|
||
error ("Erroneous arithmetic operation.");
|
||
}
|
||
|
||
static void
|
||
do_nothing (int signo)
|
||
{
|
||
/* Under System V the default disposition of a signal is reinstated after
|
||
the signal is caught and delivered to an application process. On such
|
||
systems one must restore the replacement signal handler if one wishes
|
||
to continue handling the signal in one's program. On BSD systems this
|
||
is not needed but it is harmless, and it simplifies the code to just do
|
||
it unconditionally. */
|
||
signal (signo, do_nothing);
|
||
}
|
||
|
||
static void
|
||
init_signals (void)
|
||
{
|
||
signal (SIGINT, request_quit);
|
||
|
||
/* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed
|
||
to the inferior and breakpoints will be ignored. */
|
||
#ifdef SIGTRAP
|
||
signal (SIGTRAP, SIG_DFL);
|
||
#endif
|
||
|
||
/* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get
|
||
passed to the inferior, which we don't want. It would be
|
||
possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but
|
||
on BSD4.3 systems using vfork, that can affect the
|
||
GDB process as well as the inferior (the signal handling tables
|
||
might be in memory, shared between the two). Since we establish
|
||
a handler for SIGQUIT, when we call exec it will set the signal
|
||
to SIG_DFL for us. */
|
||
signal (SIGQUIT, do_nothing);
|
||
#ifdef SIGHUP
|
||
if (signal (SIGHUP, do_nothing) != SIG_IGN)
|
||
signal (SIGHUP, disconnect);
|
||
#endif
|
||
signal (SIGFPE, float_handler);
|
||
|
||
#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
|
||
signal (SIGWINCH, SIGWINCH_HANDLER);
|
||
#endif
|
||
}
|
||
|
||
/* Read one line from the command input stream `instream'
|
||
into the local static buffer `linebuffer' (whose current length
|
||
is `linelength').
|
||
The buffer is made bigger as necessary.
|
||
Returns the address of the start of the line.
|
||
|
||
NULL is returned for end of file.
|
||
|
||
*If* the instream == stdin & stdin is a terminal, the line read
|
||
is copied into the file line saver (global var char *line,
|
||
length linesize) so that it can be duplicated.
|
||
|
||
This routine either uses fancy command line editing or
|
||
simple input as the user has requested. */
|
||
|
||
char *
|
||
command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
|
||
{
|
||
static char *linebuffer = 0;
|
||
static unsigned linelength = 0;
|
||
register char *p;
|
||
char *p1;
|
||
char *rl;
|
||
char *local_prompt = prompt_arg;
|
||
char *nline;
|
||
char got_eof = 0;
|
||
|
||
/* The annotation suffix must be non-NULL. */
|
||
if (annotation_suffix == NULL)
|
||
annotation_suffix = "";
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg))
|
||
+ strlen (annotation_suffix) + 40);
|
||
if (prompt_arg == NULL)
|
||
local_prompt[0] = '\0';
|
||
else
|
||
strcpy (local_prompt, prompt_arg);
|
||
strcat (local_prompt, "\n\032\032");
|
||
strcat (local_prompt, annotation_suffix);
|
||
strcat (local_prompt, "\n");
|
||
}
|
||
|
||
if (linebuffer == 0)
|
||
{
|
||
linelength = 80;
|
||
linebuffer = (char *) xmalloc (linelength);
|
||
}
|
||
|
||
p = linebuffer;
|
||
|
||
/* Control-C quits instantly if typed while in this loop
|
||
since it should not wait until the user types a newline. */
|
||
immediate_quit++;
|
||
#ifdef STOP_SIGNAL
|
||
if (job_control)
|
||
{
|
||
if (event_loop_p)
|
||
signal (STOP_SIGNAL, handle_stop_sig);
|
||
else
|
||
signal (STOP_SIGNAL, stop_sig);
|
||
}
|
||
#endif
|
||
|
||
while (1)
|
||
{
|
||
/* Make sure that all output has been output. Some machines may let
|
||
you get away with leaving out some of the gdb_flush, but not all. */
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
gdb_flush (gdb_stderr);
|
||
|
||
if (source_file_name != NULL)
|
||
{
|
||
++source_line_number;
|
||
sprintf (source_error,
|
||
"%s%s:%d: Error in sourced command file:\n",
|
||
source_pre_error,
|
||
source_file_name,
|
||
source_line_number);
|
||
error_pre_print = source_error;
|
||
}
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
printf_unfiltered ("\n\032\032pre-");
|
||
printf_unfiltered (annotation_suffix);
|
||
printf_unfiltered ("\n");
|
||
}
|
||
|
||
/* Don't use fancy stuff if not talking to stdin. */
|
||
if (readline_hook && instream == NULL)
|
||
{
|
||
rl = (*readline_hook) (local_prompt);
|
||
}
|
||
else if (command_editing_p && instream == stdin && ISATTY (instream))
|
||
{
|
||
rl = readline (local_prompt);
|
||
}
|
||
else
|
||
{
|
||
rl = gdb_readline (local_prompt);
|
||
}
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
printf_unfiltered ("\n\032\032post-");
|
||
printf_unfiltered (annotation_suffix);
|
||
printf_unfiltered ("\n");
|
||
}
|
||
|
||
if (!rl || rl == (char *) EOF)
|
||
{
|
||
got_eof = 1;
|
||
break;
|
||
}
|
||
if (strlen (rl) + 1 + (p - linebuffer) > linelength)
|
||
{
|
||
linelength = strlen (rl) + 1 + (p - linebuffer);
|
||
nline = (char *) xrealloc (linebuffer, linelength);
|
||
p += nline - linebuffer;
|
||
linebuffer = nline;
|
||
}
|
||
p1 = rl;
|
||
/* Copy line. Don't copy null at end. (Leaves line alone
|
||
if this was just a newline) */
|
||
while (*p1)
|
||
*p++ = *p1++;
|
||
|
||
xfree (rl); /* Allocated in readline. */
|
||
|
||
if (p == linebuffer || *(p - 1) != '\\')
|
||
break;
|
||
|
||
p--; /* Put on top of '\'. */
|
||
local_prompt = (char *) 0;
|
||
}
|
||
|
||
#ifdef STOP_SIGNAL
|
||
if (job_control)
|
||
signal (STOP_SIGNAL, SIG_DFL);
|
||
#endif
|
||
immediate_quit--;
|
||
|
||
if (got_eof)
|
||
return NULL;
|
||
|
||
#define SERVER_COMMAND_LENGTH 7
|
||
server_command =
|
||
(p - linebuffer > SERVER_COMMAND_LENGTH)
|
||
&& STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH);
|
||
if (server_command)
|
||
{
|
||
/* Note that we don't set `line'. Between this and the check in
|
||
dont_repeat, this insures that repeating will still do the
|
||
right thing. */
|
||
*p = '\0';
|
||
return linebuffer + SERVER_COMMAND_LENGTH;
|
||
}
|
||
|
||
/* Do history expansion if that is wished. */
|
||
if (history_expansion_p && instream == stdin
|
||
&& ISATTY (instream))
|
||
{
|
||
char *history_value;
|
||
int expanded;
|
||
|
||
*p = '\0'; /* Insert null now. */
|
||
expanded = history_expand (linebuffer, &history_value);
|
||
if (expanded)
|
||
{
|
||
/* Print the changes. */
|
||
printf_unfiltered ("%s\n", history_value);
|
||
|
||
/* If there was an error, call this function again. */
|
||
if (expanded < 0)
|
||
{
|
||
xfree (history_value);
|
||
return command_line_input (prompt_arg, repeat, annotation_suffix);
|
||
}
|
||
if (strlen (history_value) > linelength)
|
||
{
|
||
linelength = strlen (history_value) + 1;
|
||
linebuffer = (char *) xrealloc (linebuffer, linelength);
|
||
}
|
||
strcpy (linebuffer, history_value);
|
||
p = linebuffer + strlen (linebuffer);
|
||
xfree (history_value);
|
||
}
|
||
}
|
||
|
||
/* If we just got an empty line, and that is supposed
|
||
to repeat the previous command, return the value in the
|
||
global buffer. */
|
||
if (repeat && p == linebuffer)
|
||
return line;
|
||
for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
|
||
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;
|
||
}
|
||
|
||
/* Print the GDB banner. */
|
||
void
|
||
print_gdb_version (struct ui_file *stream)
|
||
{
|
||
/* From GNU coding standards, first line is meant to be easy for a
|
||
program to parse, and is just canonical program name and version
|
||
number, which starts after last space. */
|
||
|
||
#ifdef MI_OUT
|
||
/* Print it console style until a format is defined */
|
||
fprintf_filtered (stream, "GNU gdb %s (MI_OUT)\n", version);
|
||
#else
|
||
fprintf_filtered (stream, "GNU gdb %s\n", version);
|
||
#endif
|
||
|
||
/* Second line is a copyright notice. */
|
||
|
||
fprintf_filtered (stream, "Copyright 2001 Free Software Foundation, Inc.\n");
|
||
|
||
/* Following the copyright is a brief statement that the program is
|
||
free software, that users are free to copy and change it on
|
||
certain conditions, that it is covered by the GNU GPL, and that
|
||
there is no warranty. */
|
||
|
||
fprintf_filtered (stream, "\
|
||
GDB is free software, covered by the GNU General Public License, and you are\n\
|
||
welcome to change it and/or distribute copies of it under certain conditions.\n\
|
||
Type \"show copying\" to see the conditions.\n\
|
||
There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n");
|
||
|
||
/* After the required info we print the configuration information. */
|
||
|
||
fprintf_filtered (stream, "This GDB was configured as \"");
|
||
if (!STREQ (host_name, target_name))
|
||
{
|
||
fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name);
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "%s", host_name);
|
||
}
|
||
fprintf_filtered (stream, "\".");
|
||
}
|
||
|
||
/* 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 (void *data)
|
||
{
|
||
char *formatted_prompt = data;
|
||
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);
|
||
xfree (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 (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 */
|
||
}
|
||
else
|
||
{
|
||
/* Prompt could not be formatted. */
|
||
if (event_loop_p)
|
||
return PROMPT (0);
|
||
else
|
||
return gdb_prompt_string;
|
||
}
|
||
}
|
||
|
||
void
|
||
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)
|
||
xfree (prompt);
|
||
*/
|
||
if (event_loop_p)
|
||
PROMPT (0) = savestring (s, strlen (s));
|
||
else
|
||
gdb_prompt_string = savestring (s, strlen (s));
|
||
}
|
||
|
||
|
||
/* If necessary, make the user confirm that we should quit. Return
|
||
non-zero if we should quit, zero if we shouldn't. */
|
||
|
||
int
|
||
quit_confirm (void)
|
||
{
|
||
if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
|
||
{
|
||
char *s;
|
||
|
||
/* This is something of a hack. But there's no reliable way to
|
||
see if a GUI is running. The `use_windows' variable doesn't
|
||
cut it. */
|
||
if (init_ui_hook)
|
||
s = "A debugging session is active.\nDo you still want to close the debugger?";
|
||
else if (attach_flag)
|
||
s = "The program is running. Quit anyway (and detach it)? ";
|
||
else
|
||
s = "The program is running. Exit anyway? ";
|
||
|
||
if (!query (s))
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Quit without asking for confirmation. */
|
||
|
||
void
|
||
quit_force (char *args, int from_tty)
|
||
{
|
||
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);
|
||
|
||
exit_code = (int) value_as_long (val);
|
||
}
|
||
|
||
if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
|
||
{
|
||
if (attach_flag)
|
||
target_detach (args, from_tty);
|
||
else
|
||
target_kill ();
|
||
}
|
||
|
||
/* UDI wants this, to kill the TIP. */
|
||
target_close (1);
|
||
|
||
/* Save the history information if it is appropriate to do so. */
|
||
if (write_history_p && history_filename)
|
||
write_history (history_filename);
|
||
|
||
do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */
|
||
|
||
exit (exit_code);
|
||
}
|
||
|
||
/* Returns whether GDB is running on a terminal and whether the user
|
||
desires that questions be asked of them on that terminal. */
|
||
|
||
int
|
||
input_from_terminal_p (void)
|
||
{
|
||
return gdb_has_a_terminal () && (instream == stdin) & caution;
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
dont_repeat_command (char *ignored, int from_tty)
|
||
{
|
||
*line = 0; /* Can't call dont_repeat here because we're not
|
||
necessarily reading from stdin. */
|
||
}
|
||
|
||
/* Functions to manipulate command line editing control variables. */
|
||
|
||
/* Number of commands to print in each call to show_commands. */
|
||
#define Hist_print 10
|
||
void
|
||
show_commands (char *args, int from_tty)
|
||
{
|
||
/* Index for history commands. Relative to history_base. */
|
||
int offset;
|
||
|
||
/* Number of the history entry which we are planning to display next.
|
||
Relative to history_base. */
|
||
static int num = 0;
|
||
|
||
/* The first command in the history which doesn't exist (i.e. one more
|
||
than the number of the last command). Relative to history_base. */
|
||
int hist_len;
|
||
|
||
extern HIST_ENTRY *history_get (int);
|
||
|
||
/* Print out some of the commands from the command history. */
|
||
/* First determine the length of the history list. */
|
||
hist_len = history_size;
|
||
for (offset = 0; offset < history_size; offset++)
|
||
{
|
||
if (!history_get (history_base + offset))
|
||
{
|
||
hist_len = offset;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (args)
|
||
{
|
||
if (args[0] == '+' && args[1] == '\0')
|
||
/* "info editing +" should print from the stored position. */
|
||
;
|
||
else
|
||
/* "info editing <exp>" should print around command number <exp>. */
|
||
num = (parse_and_eval_long (args) - history_base) - Hist_print / 2;
|
||
}
|
||
/* "show commands" means print the last Hist_print commands. */
|
||
else
|
||
{
|
||
num = hist_len - Hist_print;
|
||
}
|
||
|
||
if (num < 0)
|
||
num = 0;
|
||
|
||
/* If there are at least Hist_print commands, we want to display the last
|
||
Hist_print rather than, say, the last 6. */
|
||
if (hist_len - num < Hist_print)
|
||
{
|
||
num = hist_len - Hist_print;
|
||
if (num < 0)
|
||
num = 0;
|
||
}
|
||
|
||
for (offset = num; offset < num + Hist_print && offset < hist_len; offset++)
|
||
{
|
||
printf_filtered ("%5d %s\n", history_base + offset,
|
||
(history_get (history_base + offset))->line);
|
||
}
|
||
|
||
/* The next command we want to display is the next one that we haven't
|
||
displayed yet. */
|
||
num += Hist_print;
|
||
|
||
/* If the user repeats this command with return, it should do what
|
||
"show commands +" does. This is unnecessary if arg is null,
|
||
because "show commands +" is not useful after "show commands". */
|
||
if (from_tty && args)
|
||
{
|
||
args[0] = '+';
|
||
args[1] = '\0';
|
||
}
|
||
}
|
||
|
||
/* Called by do_setshow_command. */
|
||
/* ARGSUSED */
|
||
static void
|
||
set_history_size_command (char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (history_size == INT_MAX)
|
||
unstifle_history ();
|
||
else if (history_size >= 0)
|
||
stifle_history (history_size);
|
||
else
|
||
{
|
||
history_size = INT_MAX;
|
||
error ("History size must be non-negative");
|
||
}
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
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 */
|
||
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 */
|
||
void
|
||
set_verbose (char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
char *cmdname = "verbose";
|
||
struct cmd_list_element *showcmd;
|
||
|
||
showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
|
||
|
||
if (info_verbose)
|
||
{
|
||
c->doc = "Set verbose printing of informational messages.";
|
||
showcmd->doc = "Show verbose printing of informational messages.";
|
||
}
|
||
else
|
||
{
|
||
c->doc = "Set verbosity.";
|
||
showcmd->doc = "Show verbosity.";
|
||
}
|
||
}
|
||
|
||
/* Init the history buffer. Note that we are called after the init file(s)
|
||
* have been read so that the user can change the history file via his
|
||
* .gdbinit file (for instance). The GDBHISTFILE environment variable
|
||
* overrides all of this.
|
||
*/
|
||
|
||
void
|
||
init_history (void)
|
||
{
|
||
char *tmpenv;
|
||
|
||
tmpenv = getenv ("HISTSIZE");
|
||
if (tmpenv)
|
||
history_size = atoi (tmpenv);
|
||
else if (!history_size)
|
||
history_size = 256;
|
||
|
||
stifle_history (history_size);
|
||
|
||
tmpenv = getenv ("GDBHISTFILE");
|
||
if (tmpenv)
|
||
history_filename = savestring (tmpenv, strlen (tmpenv));
|
||
else if (!history_filename)
|
||
{
|
||
/* We include the current directory so that if the user changes
|
||
directories the file written will be the same as the one
|
||
that was read. */
|
||
#ifdef __MSDOS__
|
||
/* No leading dots in file names are allowed on MSDOS. */
|
||
history_filename = concat (current_directory, "/_gdb_history", NULL);
|
||
#else
|
||
history_filename = concat (current_directory, "/.gdb_history", NULL);
|
||
#endif
|
||
}
|
||
read_history (history_filename);
|
||
}
|
||
|
||
static void
|
||
init_main (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
/* If we are running the asynchronous version,
|
||
we initialize the prompts differently. */
|
||
if (!event_loop_p)
|
||
{
|
||
gdb_prompt_string = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT));
|
||
}
|
||
else
|
||
{
|
||
/* initialize the prompt stack to a simple "(gdb) " prompt or to
|
||
whatever the DEFAULT_PROMPT is. */
|
||
the_prompts.top = 0;
|
||
PREFIX (0) = "";
|
||
PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT));
|
||
SUFFIX (0) = "";
|
||
/* Set things up for annotation_level > 1, if the user ever decides
|
||
to use it. */
|
||
async_annotation_suffix = "prompt";
|
||
/* Set the variable associated with the setshow prompt command. */
|
||
new_async_prompt = 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;
|
||
history_expansion_p = 0;
|
||
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 =
|
||
get_gdb_completer_word_break_characters ();
|
||
rl_completer_quote_characters = get_gdb_completer_quote_characters ();
|
||
rl_readline_name = "gdb";
|
||
|
||
/* The set prompt 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. */
|
||
if (!event_loop_p)
|
||
{
|
||
add_show_from_set
|
||
(add_set_cmd ("prompt", class_support, var_string,
|
||
(char *) &gdb_prompt_string, "Set gdb's prompt",
|
||
&setlist),
|
||
&showlist);
|
||
}
|
||
else
|
||
{
|
||
c = add_set_cmd ("prompt", class_support, var_string,
|
||
(char *) &new_async_prompt, "Set gdb's prompt",
|
||
&setlist);
|
||
add_show_from_set (c, &showlist);
|
||
c->function.sfunc = 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 ("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.");
|
||
|
||
/* 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. */
|
||
if (!event_loop_p)
|
||
{
|
||
add_show_from_set
|
||
(add_set_cmd ("editing", class_support, var_boolean, (char *) &command_editing_p,
|
||
"Set editing of command lines as they are typed.\n\
|
||
Use \"on\" to enable the editing, and \"off\" to disable it.\n\
|
||
Without an argument, command line editing is enabled. To edit, use\n\
|
||
EMACS-like or VI-like commands like control-P or ESC.", &setlist),
|
||
&showlist);
|
||
}
|
||
else
|
||
{
|
||
c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p,
|
||
"Set editing of command lines as they are typed.\n\
|
||
Use \"on\" to enable the editing, and \"off\" to disable it.\n\
|
||
Without an argument, command line editing is enabled. To edit, use\n\
|
||
EMACS-like or VI-like commands like control-P or ESC.", &setlist);
|
||
|
||
add_show_from_set (c, &showlist);
|
||
c->function.sfunc = set_async_editing_command;
|
||
}
|
||
|
||
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\
|
||
Use \"on\" to enable the saving, and \"off\" to disable it.\n\
|
||
Without an argument, saving is enabled.", &sethistlist),
|
||
&showhistlist);
|
||
|
||
c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size,
|
||
"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;
|
||
|
||
c = add_set_cmd ("filename", no_class, var_filename,
|
||
(char *) &history_filename,
|
||
"Set the filename in which to record the command history\n\
|
||
(the list of previous commands of which a record is kept).", &sethistlist);
|
||
c->completer = filename_completer;
|
||
add_show_from_set (c, &showhistlist);
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("confirm", class_support, var_boolean,
|
||
(char *) &caution,
|
||
"Set whether to confirm potentially dangerous operations.",
|
||
&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
|
||
gdb. */
|
||
if (!event_loop_p)
|
||
{
|
||
c = add_set_cmd ("annotate", class_obscure, var_zinteger,
|
||
(char *) &annotation_level, "Set annotation_level.\n\
|
||
0 == normal; 1 == fullname (for use when running under emacs)\n\
|
||
2 == output annotated suitably for use by programs that control GDB.",
|
||
&setlist);
|
||
c = add_show_from_set (c, &showlist);
|
||
}
|
||
else
|
||
{
|
||
c = add_set_cmd ("annotate", class_obscure, var_zinteger,
|
||
(char *) &annotation_level, "Set annotation_level.\n\
|
||
0 == normal; 1 == fullname (for use when running under emacs)\n\
|
||
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;
|
||
}
|
||
if (event_loop_p)
|
||
{
|
||
add_show_from_set
|
||
(add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p,
|
||
"Set notification of completion for asynchronous execution commands.\n\
|
||
Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist),
|
||
&showlist);
|
||
}
|
||
}
|
||
|
||
void
|
||
gdb_init (char *argv0)
|
||
{
|
||
if (pre_init_ui_hook)
|
||
pre_init_ui_hook ();
|
||
|
||
/* Run the init function of each source file */
|
||
|
||
getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
|
||
current_directory = gdb_dirbuf;
|
||
|
||
#ifdef __MSDOS__
|
||
/* Make sure we return to the original directory upon exit, come
|
||
what may, since the OS doesn't do that for us. */
|
||
make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory));
|
||
#endif
|
||
|
||
init_cmd_lists (); /* This needs to be done first */
|
||
initialize_targets (); /* Setup target_terminal macros for utils.c */
|
||
initialize_utils (); /* Make errors and warnings possible */
|
||
initialize_all_files ();
|
||
initialize_current_architecture ();
|
||
init_cli_cmds();
|
||
init_main (); /* But that omits this file! Do it now */
|
||
|
||
/* The signal handling mechanism is different depending whether or
|
||
not the async version is run. NOTE: in the future we plan to make
|
||
the event loop be the default engine of gdb, and this difference
|
||
will disappear. */
|
||
if (event_loop_p)
|
||
async_init_signals ();
|
||
else
|
||
init_signals ();
|
||
|
||
/* We need a default language for parsing expressions, so simple things like
|
||
"set width 0" won't fail if no language is explicitly set in a config file
|
||
or implicitly set by reading an executable during startup. */
|
||
set_language (language_c);
|
||
expected_language = current_language; /* don't warn about the change. */
|
||
|
||
#ifdef UI_OUT
|
||
/* Install the default UI */
|
||
if (!init_ui_hook)
|
||
{
|
||
uiout = cli_out_new (gdb_stdout);
|
||
|
||
/* All the interpreters should have had a look at things by now.
|
||
Initialize the selected interpreter. */
|
||
if (interpreter_p)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr, "Interpreter `%s' unrecognized.\n",
|
||
interpreter_p);
|
||
exit (1);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
if (init_ui_hook)
|
||
init_ui_hook (argv0);
|
||
}
|