-/* Top level `main' program for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
+/* Top level stuff for GDB, the GNU debugger.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
Free Software Foundation, Inc.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+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 "signals.h"
+#include "top.h"
+#include "event-loop.h"
#include "target.h"
-#include "breakpoint.h"
-#include "gdbtypes.h"
-#include "expression.h"
-#include "language.h"
-#include "terminal.h" /* For job_control. */
-#include "annotate.h"
+#include "inferior.h"
+#include "call-cmds.h"
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
#include "getopt.h"
-/* readline include files */
-#include "readline.h"
-#include "history.h"
-
-/* readline defines this. */
-#undef savestring
-
#include <sys/types.h>
-#ifdef USG
-/* What is this for? X_OK? */
-#include <unistd.h>
-#endif
-
-#include <string.h>
-#ifndef NO_SYS_FILE
-#include <sys/file.h>
-#endif
-#include <setjmp.h>
-#include <sys/param.h>
-#include <sys/stat.h>
+#include "gdb_stat.h"
#include <ctype.h>
-#ifdef SET_STACK_LIMIT_HUGE
-#include <sys/time.h>
-#include <sys/resource.h>
-
-int original_stack_limit;
-#endif
-
-/* Prototypes for local functions */
-
-static char *
-symbol_completion_function PARAMS ((char *, int));
-
-static void
-command_loop PARAMS ((void));
-
-static void
-command_loop_marker PARAMS ((int));
-
-static void
-print_gdb_version PARAMS ((GDB_FILE *));
-
-static void
-quit_command PARAMS ((char *, int));
-
-static void
-init_main PARAMS ((void));
-
-static void
-init_history PARAMS ((void));
-
-static void
-init_cmd_lists PARAMS ((void));
-
-static void
-float_handler PARAMS ((int));
-
-static void
-source_command PARAMS ((char *, int));
-
-static void cd_command PARAMS ((char *, int));
-
-static void
-print_gnu_advertisement PARAMS ((void));
-
-static void
-init_signals PARAMS ((void));
-
-static void
-read_command_file PARAMS ((FILE *));
-
-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));
-
-static int
-quit_cover PARAMS ((char *));
-
-static void
-disconnect PARAMS ((int));
-
-static void
-source_cleanup PARAMS ((FILE *));
-
-/* If this definition isn't overridden by the header files, assume
- that isatty and fileno exist on this system. */
-#ifndef ISATTY
-#define ISATTY(FP) (isatty (fileno (FP)))
-#endif
-
-/* Initialization file name for gdb. This is overridden in some configs. */
-
-#ifndef GDBINIT_FILENAME
-#define GDBINIT_FILENAME ".gdbinit"
-#endif
-static char gdbinit[] = GDBINIT_FILENAME;
-static int inhibit_gdbinit = 0;
-
-#define ALL_CLEANUPS ((struct cleanup *)0)
-
-/* Version number of GDB, as a string. */
-
-extern char *version;
-
-/* Canonical host name as a string. */
-
-extern char *host_name;
-
-/* Canonical target name as a string. */
-
-extern char *target_name;
-
-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. */
-
-/*
- * Define all cmd_list_element's
- */
-
-/* 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 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. */
-
-#if MAINTENANCE_CMDS
-struct cmd_list_element *maintenancelist;
-#endif
-
-/* Chain containing all defined "maintenance info" subcommands. */
-
-#if MAINTENANCE_CMDS
-struct cmd_list_element *maintenanceinfolist;
-#endif
-
-/* Chain containing all defined "maintenance print" subcommands. */
-
-#if MAINTENANCE_CMDS
-struct cmd_list_element *maintenanceprintlist;
-#endif
-
-struct cmd_list_element *setprintlist;
-
-struct cmd_list_element *showprintlist;
+#include "gdb_string.h"
-struct cmd_list_element *setchecklist;
+/* If nonzero, display time usage both at startup and for each command. */
-struct cmd_list_element *showchecklist;
+int display_time;
-/* 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. */
+/* If nonzero, display space usage both at startup and for each command. */
-FILE *instream;
+int display_space;
-/* Current working directory. */
+/* Whether this is the async version or not. The async version is
+invoked on the command line with the -nw --async options. In this
+version, the usual command_loop is substituted by and event loop which
+processes UI events asynchronously. */
+int async = 0;
-char *current_directory;
+/* Whether this is the command line version or not */
+int tui_version = 0;
-/* The directory name is actually stored here (usually). */
-static char dirbuf[1024];
+/* Whether xdb commands will be handled */
+int xdb_commands = 0;
-/* Function to call before reading a command, if nonzero.
- The function receives two args: an input stream,
- and a prompt string. */
+/* Whether dbx commands will be handled */
+int dbx_commands = 0;
-void (*window_hook) PARAMS ((FILE *, char *));
+GDB_FILE *gdb_stdout;
+GDB_FILE *gdb_stderr;
-extern int mapped_symbol_files;
-extern int readnow_symbol_files;
+/* Whether to enable writing into executable and core files */
+extern int write_files;
-int epoch_interface;
-int xgdb_verbose;
+static void print_gdb_help PARAMS ((GDB_FILE *));
-/* gdb prints this when reading a command interactively */
-static char *prompt;
+/* These two are used to set the external editor commands when gdb is farming
+ out files to be edited by another program. */
-/* Buffer used for reading command lines, and the size
- allocated for it so far. */
+extern int enable_external_editor;
+extern char * external_editor_command;
-char *line;
-int linesize = 100;
-
-/* Nonzero if the current command is modified by "server ". This
- affects things like recording into the command history, comamnds
- 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;
-
-/* Non-zero tells remote* modules to output debugging info. */
-
-int remote_debug = 0;
-
-/* 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
+#ifdef __CYGWIN__
+#include <windows.h> /* for MAX_PATH */
+#include <sys/cygwin.h> /* for cygwin32_conv_to_posix_path */
#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
-\f
-/* Where to go for return_to_top_level (RETURN_ERROR). */
-static jmp_buf error_return;
-/* Where to go for return_to_top_level (RETURN_QUIT). */
-static jmp_buf quit_return;
-
-/* Temporary variable for SET_TOP_LEVEL. */
-static int top_level_val;
-
-/* Do a setjmp on error_return and quit_return. catch_errors is
- generally a cleaner way to do this, but main() would look pretty
- ugly if it had to use catch_errors each time. */
-
-#define SET_TOP_LEVEL() \
- (((top_level_val = setjmp (error_return)) \
- ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \
- , top_level_val)
-
-/* Return for reason REASON. This generally gets back to the command
- loop, but can be caught via catch_errors. */
-
-NORETURN void
-return_to_top_level (reason)
- 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 (annotation_level > 1)
- switch (reason)
- {
- case RETURN_QUIT:
- annotate_quit ();
- break;
- case RETURN_ERROR:
- annotate_error ();
- break;
- }
-
- (NORETURN void) longjmp
- (reason == RETURN_ERROR ? error_return : quit_return, 1);
-}
-
-/* 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. */
-
-int
-catch_errors (func, args, errstring, mask)
- int (*func) PARAMS ((char *));
- PTR args;
- char *errstring;
- return_mask mask;
-{
- jmp_buf saved_error;
- jmp_buf saved_quit;
- jmp_buf tmp_jmp;
- int val;
- struct cleanup *saved_cleanup_chain;
- char *saved_error_pre_print;
-
- saved_cleanup_chain = save_cleanups ();
- saved_error_pre_print = error_pre_print;
-
- if (mask & RETURN_MASK_ERROR)
- memcpy ((char *)saved_error, (char *)error_return, sizeof (jmp_buf));
- if (mask & RETURN_MASK_QUIT)
- memcpy (saved_quit, quit_return, sizeof (jmp_buf));
- error_pre_print = errstring;
-
- if (setjmp (tmp_jmp) == 0)
- {
- if (mask & RETURN_MASK_ERROR)
- memcpy (error_return, tmp_jmp, sizeof (jmp_buf));
- if (mask & RETURN_MASK_QUIT)
- memcpy (quit_return, tmp_jmp, sizeof (jmp_buf));
- val = (*func) (args);
- }
- else
- val = 0;
-
- restore_cleanups (saved_cleanup_chain);
-
- error_pre_print = saved_error_pre_print;
- if (mask & RETURN_MASK_ERROR)
- memcpy (error_return, saved_error, sizeof (jmp_buf));
- if (mask & RETURN_MASK_QUIT)
- memcpy (quit_return, saved_quit, sizeof (jmp_buf));
- return val;
-}
-
-/* Handler for 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(). */
-
-static int
-quit_cover (s)
-char *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;
-}
-\f
-/* Line number we are currently in in a file which is being sourced. */
-static int source_line_number;
-
-/* Name of the file we are sourcing. */
-static char *source_file_name;
-
-/* Buffer containing the error_pre_print used by the source stuff.
- Malloc'd. */
-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. */
-static char *source_pre_error;
-
-/* Clean up on error during a "source" command (or execution of a
- user-defined command). */
-
-static void
-source_cleanup (stream)
- FILE *stream;
-{
- /* Restore the previous input stream. */
- instream = stream;
-}
-
-/* Read commands from STREAM. */
-static void
-read_command_file (stream)
- FILE *stream;
-{
- struct cleanup *cleanups;
-
- cleanups = make_cleanup (source_cleanup, instream);
- instream = stream;
- command_loop ();
- do_cleanups (cleanups);
-}
-\f
int
main (argc, argv)
int argc;
register int i;
-/* start-sanitize-mpw */
-#ifdef MPW
- /* Drop into MacsBug, but only if the executable is specially named. */
- if (strcmp(argv[0], "DEBUGGDB") == 0)
- DebugStr("\pat start of GDB main");
+ long time_at_startup = get_run_time ();
- if (StandAlone)
- mac_app = mac_init ();
+ int gdb_file_size;
+
+ START_PROGRESS (argv[0], 0);
+
+#ifdef MPW
+ /* Do all Mac-specific setup. */
+ mac_init ();
#endif /* MPW */
-/* end-sanitize-mpw */
+
/* This needs to happen before the first use of malloc. */
init_malloc ((PTR) NULL);
line[0] = '\0'; /* Terminate saved (now empty) cmd line */
instream = stdin;
- getcwd (dirbuf, sizeof (dirbuf));
- current_directory = dirbuf;
+ getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
+ current_directory = gdb_dirbuf;
-#ifdef SET_STACK_LIMIT_HUGE
- {
- struct rlimit rlim;
-
- /* Set the stack limit huge so that alloca (particularly stringtab
- * in dbxread.c) does not fail. */
- getrlimit (RLIMIT_STACK, &rlim);
- original_stack_limit = rlim.rlim_cur;
- rlim.rlim_cur = rlim.rlim_max;
- setrlimit (RLIMIT_STACK, &rlim);
- }
-#endif /* SET_STACK_LIMIT_HUGE */
+ gdb_file_size = sizeof(GDB_FILE);
+
+ gdb_stdout = (GDB_FILE *)xmalloc (gdb_file_size);
+ gdb_stdout->ts_streamtype = afile;
+ gdb_stdout->ts_filestream = stdout;
+ gdb_stdout->ts_strbuf = NULL;
+ gdb_stdout->ts_buflen = 0;
+
+ gdb_stderr = (GDB_FILE *)xmalloc (gdb_file_size);
+ gdb_stderr->ts_streamtype = afile;
+ gdb_stderr->ts_filestream = stderr;
+ gdb_stderr->ts_strbuf = NULL;
+ gdb_stderr->ts_buflen = 0;
/* Parse arguments and options. */
{
short option (or arbitrary numbers starting at 10 for those
with no equivalent). */
static struct option long_options[] =
- {
+ {
+ {"async", no_argument, &async, 1},
+#if defined(TUI)
+ {"tui", no_argument, &tui_version, 1},
+#endif
+ {"xdb", no_argument, &xdb_commands, 1},
+ {"dbx", no_argument, &dbx_commands, 1},
{"readnow", no_argument, &readnow_symbol_files, 1},
{"r", no_argument, &readnow_symbol_files, 1},
{"mapped", no_argument, &mapped_symbol_files, 1},
{"tty", required_argument, 0, 't'},
{"baud", required_argument, 0, 'b'},
{"b", required_argument, 0, 'b'},
+ {"nw", no_argument, &use_windows, 0},
+ {"nowindows", no_argument, &use_windows, 0},
+ {"w", no_argument, &use_windows, 1},
+ {"windows", no_argument, &use_windows, 1},
+ {"statistics", no_argument, 0, 13},
+ {"write", no_argument, &write_files, 1},
/* Allow machine descriptions to add more options... */
#ifdef ADDITIONAL_OPTIONS
ADDITIONAL_OPTIONS
#endif
- {0, no_argument, 0, 0},
+ {0, no_argument, 0, 0}
};
while (1)
/* FIXME: what if the syntax is wrong (e.g. not digits)? */
annotation_level = atoi (optarg);
break;
+ case 13:
+ /* Enable the display of both time and space usage. */
+ display_time = 1;
+ display_space = 1;
+ break;
case 'f':
annotation_level = 1;
+/* We have probably been invoked from emacs. Disable window interface. */
+ use_windows = 0;
break;
case 's':
symarg = optarg;
else
baud_rate = i;
}
+ case 'l':
+ {
+ int i;
+ char *p;
+
+ i = strtol (optarg, &p, 0);
+ if (i == 0 && p == optarg)
+
+ /* Don't use *_filtered or warning() (which relies on
+ current_target) until after initialize_all_files(). */
+
+ fprintf_unfiltered
+ (gdb_stderr,
+ "warning: could not set timeout limit to `%s'.\n", optarg);
+ else
+ remote_timeout = i;
+ }
break;
#ifdef ADDITIONAL_OPTION_CASES
}
}
+ /* If --help or --version, disable window interface. */
+ if (print_help || print_version)
+ {
+ use_windows = 0;
+#ifdef TUI
+ /* Disable the TUI as well. */
+ tui_version = 0;
+#endif
+ }
+
+#ifdef TUI
+ /* An explicit --tui flag overrides the default UI, which is the
+ window system. */
+ if (tui_version)
+ use_windows = 0;
+#endif
+
/* OK, that's all the options. The other arguments are filenames. */
count = 0;
for (; optind < argc; optind++)
quiet = 1;
}
- /* Run the init function of each source file */
-
- init_cmd_lists (); /* This needs to be done first */
- initialize_all_files ();
- init_main (); /* But that omits this file! Do it now */
- init_signals ();
+ /* Get ready to invoke the event loop instead of the
+ command_loop. See event-loop.h for more details.*/
+ if (async)
+ async_hook = setup_event_loop;
+#if defined(TUI)
+ if (tui_version)
+ init_ui_hook = tuiInit;
+#endif
+ gdb_init (argv[0]);
/* Do these (and anything which might call wrap_here or *_filtered)
after initialize_all_files. */
if (print_help)
{
- /* --version is intentionally not documented here, because we
- are printing the version here, and the help is long enough
- already. */
-
- print_gdb_version (gdb_stdout);
- /* Make sure the output gets printed. */
- wrap_here ("");
- printf_filtered ("\n");
-
- /* But don't use *_filtered here. We don't want to prompt for continue
- no matter how small the screen or how much we're going to print. */
-/* start-sanitize-mpw */
-/* For reasons too ugly to describe... */
-#ifdef MPW_C
- fputs_unfiltered ("This is the GNU debugger.\n", gdb_stdout);
-#else
-/* end-sanitize-mpw */
- fputs_unfiltered ("\
-This is the GNU debugger. Usage:\n\
- gdb [options] [executable-file [core-file or process-id]]\n\
-Options:\n\
- --help Print this message.\n\
- --quiet Do not print version number on startup.\n\
- --fullname Output information used by emacs-GDB interface.\n\
- --epoch Output information used by epoch emacs-GDB interface.\n\
- --batch Exit after processing options.\n\
- --nx Do not read .gdbinit file.\n\
- --tty=TTY Use TTY for input/output by the program being debugged.\n\
- --cd=DIR Change current directory to DIR.\n\
- --directory=DIR Search for source files in DIR.\n\
- --command=FILE Execute GDB commands from FILE.\n\
- --symbols=SYMFILE Read symbols from SYMFILE.\n\
- --exec=EXECFILE Use EXECFILE as the executable.\n\
- --se=FILE Use FILE as symbol file and executable file.\n\
- --core=COREFILE Analyze the core dump COREFILE.\n\
- -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
- --mapped Use mapped symbol files if supported on this system.\n\
- --readnow Fully read symbol files on first access.\n\
-", gdb_stdout);
-/* start-sanitize-mpw */
-#endif /* MPW_C */
-/* end-sanitize-mpw */
-#ifdef ADDITIONAL_OPTION_HELP
- fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout);
-#endif
- fputs_unfiltered ("\n\
-For more information, type \"help\" from within GDB, or consult the\n\
-GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
+ print_gdb_help (gdb_stdout);
+ fputs_unfiltered ("\n", gdb_stdout);
exit (0);
}
-
+
if (!quiet)
{
/* Print all the junk at the top, with trailing "..." if we are about
to read a symbol file (possibly slowly). */
- print_gnu_advertisement ();
print_gdb_version (gdb_stdout);
if (symarg)
printf_filtered ("..");
}
error_pre_print = "\n\n";
+ quit_pre_print = error_pre_print;
+
/* We may get more than one warning, don't double space all of them... */
warning_pre_print = "\nwarning: ";
- /* 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. */
-
/* Read and execute $HOME/.gdbinit file, if it exists. This is done
*before* all the command line arguments are processed; it sets
global parameters, which are independent of what file you are
debugging or what directory you are in. */
- homedir = getenv ("HOME");
+#ifdef __CYGWIN32__
+ {
+ char * tmp = getenv ("HOME");
+
+ if (tmp != NULL)
+ {
+ homedir = (char *) alloca (MAX_PATH+1);
+ cygwin32_conv_to_posix_path (tmp, homedir);
+ }
+ else
+ homedir = NULL;
+ }
+#else
+ homedir = getenv ("HOME");
+#endif
if (homedir)
{
- homeinit = (char *) alloca (strlen (getenv ("HOME")) +
+ homeinit = (char *) alloca (strlen (homedir) +
strlen (gdbinit) + 10);
- strcpy (homeinit, getenv ("HOME"));
+ strcpy (homeinit, homedir);
strcat (homeinit, "/");
strcat (homeinit, gdbinit);
- if (!inhibit_gdbinit && access (homeinit, R_OK) == 0)
+
+ if (!inhibit_gdbinit)
{
if (!SET_TOP_LEVEL ())
source_command (homeinit, 0);
stat (gdbinit, &cwdbuf); /* We'll only need this if
homedir was set. */
}
-
+
/* Now perform all the actions indicated by the arguments. */
if (cdarg != NULL)
{
if (!quiet)
printf_filtered ("\n");
error_pre_print = "\n";
+ quit_pre_print = error_pre_print;
warning_pre_print = "\nwarning: ";
if (corearg != NULL)
- if (!SET_TOP_LEVEL ())
- core_file_command (corearg, !batch);
- else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ())
- attach_command (corearg, !batch);
+ {
+ if (!SET_TOP_LEVEL ())
+ core_file_command (corearg, !batch);
+ else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ())
+ attach_command (corearg, !batch);
+ }
do_cleanups (ALL_CLEANUPS);
if (ttyarg != NULL)
#endif
/* Error messages should no longer be distinguished with extra output. */
- error_pre_print = 0;
+ error_pre_print = NULL;
+ quit_pre_print = NULL;
warning_pre_print = "warning: ";
/* Read the .gdbinit file in the current directory, *if* it isn't
if (!homedir
|| memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
- if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0)
+ if (!inhibit_gdbinit)
{
if (!SET_TOP_LEVEL ())
source_command (gdbinit, 0);
{
if (!SET_TOP_LEVEL ())
{
+ /* NOTE: I am commenting this out, because it is not clear
+ where this feature is used. It is very old and
+ undocumented. ezannoni: 1999-05-04*/
+#if 0
if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0')
read_command_file (stdin);
else
+#endif
source_command (cmdarg[i], !batch);
do_cleanups (ALL_CLEANUPS);
}
BEFORE_MAIN_LOOP_HOOK;
#endif
- /* The command loop. */
-
- while (1)
- {
- if (!SET_TOP_LEVEL ())
- {
- do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
-/* start-sanitize-mpw */
-#ifdef MPW
- /* If we're being a Mac application, go into a Mac-specific
- event-handling loop instead. We still want to be inside
- the outer loop, because that will catch longjmps resulting
- from some command executions. */
- if (mac_app)
- mac_command_loop ();
- else
-#endif /* MPW */
-/* start-sanitize-mpw */
- command_loop ();
- quit_command ((char *)0, instream == stdin);
- }
- }
- /* No exit -- exit is through quit_command. */
-}
-
-void
-execute_user_command (c, args)
- struct cmd_list_element *c;
- char *args;
-{
- register struct command_line *cmdlines;
- struct cleanup *old_chain;
-
- if (args)
- error ("User-defined commands cannot take arguments.");
-
- 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 (source_cleanup, instream);
- instream = (FILE *) 0;
- while (cmdlines)
- {
- execute_command (cmdlines->line, 0);
- 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;
-
- free_all_values ();
-
- /* This can happen when command_line_input hits end of file. */
- if (p == NULL)
- return;
-
- while (*p == ' ' || *p == '\t') p++;
- if (*p)
- {
- char *arg;
-
- c = lookup_cmd (&p, cmdlist, "", 0, 1);
- /* Pass null arg rather than an empty one. */
- arg = *p ? p : 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
- (*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;
- }
-
- /* 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;
- }
- }
-}
+ END_PROGRESS (argv[0]);
-/* ARGSUSED */
-static void
-command_loop_marker (foo)
- int foo;
-{
-}
-
-/* Read commands from `instream' and execute them
- until end of file or error reading instream. */
-static void
-command_loop ()
-{
- struct cleanup *old_chain;
- char *command;
- int stdin_is_tty = ISATTY (stdin);
+ /* Show time and/or space usage. */
- while (!feof (instream))
+ if (display_time)
{
- if (window_hook && instream == stdin)
- (*window_hook) (instream, prompt);
-
- quit_flag = 0;
- if (instream == stdin && stdin_is_tty)
- reinitialize_more_filter ();
- old_chain = make_cleanup (command_loop_marker, 0);
- command = command_line_input (instream == stdin ? prompt : (char *) NULL,
- instream == stdin, "prompt");
- if (command == 0)
- return;
- execute_command (command, instream == stdin);
- /* Do any commands attached to breakpoint we stopped at. */
- bpstat_do_actions (&stop_bpstat);
- do_cleanups (old_chain);
- }
-}
-\f
-/* Commands call this if they do not want to be repeated by null lines. */
-
-void
-dont_repeat ()
-{
- 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;
-}
-\f
-/* Read a line from the stream "instream" without command line editing.
-
- It prints PRROMPT 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 (prrompt)
- char *prrompt;
-{
- int c;
- char *result;
- int input_index = 0;
- int result_size = 80;
+ long init_time = get_run_time () - time_at_startup;
- if (prrompt)
- {
- /* 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 (prrompt, gdb_stdout);
-/* start-sanitize-mpw */
-#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 */
-/* end-sanitize-mpw */
- gdb_flush (gdb_stdout);
+ printf_unfiltered ("Startup time: %ld.%06ld\n",
+ init_time / 1000000, init_time % 1000000);
}
-
- result = (char *) xmalloc (result_size);
- while (1)
+ if (display_space)
{
- /* 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;
- free (result);
- return NULL;
- }
-
- if (c == '\n')
- break;
+#ifdef HAVE_SBRK
+ extern char **environ;
+ char *lim = (char *) sbrk (0);
- result[input_index++] = c;
- while (input_index >= result_size)
- {
- result_size *= 2;
- result = (char *) xrealloc (result, result_size);
- }
+ printf_unfiltered ("Startup size: data size %ld\n",
+ (long) (lim - (char *) &environ));
+#endif
}
- 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;
-static int history_expansion_p;
-static int write_history_p;
-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;
-{
- /* From readline. */
- extern char *filename_completion_function ();
- 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;
+ /* Call the event loop, if gdb was invoked with the --async
+ option. Control will never get back to this file, if the event
+ loop is invoked. See the files event-*.[ch] for details. */
+ if (async_hook)
+ async_hook();
+
+ /* The default command loop.
+ The WIN32 Gui calls this main to set up gdb's state, and
+ has its own command loop. */
+#if !defined _WIN32 || defined __GNUC__
while (1)
{
- 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;
- }
-#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)
- */
-
-/* Generate completions one by one for the completer. Each time we are
- called return another potential completion to the caller. The function
- is misnamed; it 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 readline's idea of the "word" we are looking at; we don't really
- like readline's ideas about word breaking so we ignore it.
-
- 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.
-
- Returns NULL if there are no more completions, else a pointer to a string
- which is a possible completion.
-
- RL_LINE_BUFFER is available to be looked at; it contains the entire text
- of the line. RL_POINT is the offset in that line of the cursor. You
- should pretend that the line ends at RL_POINT. */
-
-static char *
-symbol_completion_function (text, matches)
- char *text;
- int matches;
-{
- 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 (rl_point + 1);
- p = tmp_command;
-
- strncpy (tmp_command, rl_line_buffer, rl_point);
- tmp_command[rl_point] = '\0';
- /* Since text always contains some number of characters leading up
- to rl_point, we can find the equivalent position in tmp_command
- by subtracting that many characters from the end of tmp_command. */
- word = tmp_command + rl_point - strlen (text);
-
- if (rl_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 + rl_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
+ if (!SET_TOP_LEVEL ())
{
- /* We've recognized a full command. */
-
- if (p == tmp_command + rl_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
- {
- /* 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;
- }
- }
+ do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
+ /* GUIs generally have their own command loop, mainloop, or whatever.
+ This is a good place to gain control because many error
+ conditions will end up here via longjmp(). */
+ if (command_loop_hook)
+ command_loop_hook ();
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
- {
- /* 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++;
+ command_loop ();
+ quit_command ((char *)0, instream == stdin);
}
}
-#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;
+ /* No exit -- exit is through quit_command. */
#endif
- return (output);
}
-/* 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);
-}
+/* Don't use *_filtered for printing help. We don't want to prompt
+ for continue no matter how small the screen or how much we're going
+ to print. */
-\f
-#ifdef STOP_SIGNAL
static void
-stop_sig (signo)
-int signo;
+print_gdb_help (stream)
+ GDB_FILE *stream;
{
-#if STOP_SIGNAL == SIGTSTP
- signal (SIGTSTP, SIG_DFL);
- sigsetmask (0);
- kill (getpid (), SIGTSTP);
- signal (SIGTSTP, stop_sig);
-#else
- signal (STOP_SIGNAL, stop_sig);
+ fputs_unfiltered ("\
+This is the GNU debugger. Usage:\n\n\
+ gdb [options] [executable-file [core-file or process-id]]\n\n\
+Options:\n\n\
+", stream);
+ fputs_unfiltered ("\
+ -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
+ --batch Exit after processing options.\n\
+ --cd=DIR Change current directory to DIR.\n\
+ --command=FILE Execute GDB commands from FILE.\n\
+ --core=COREFILE Analyze the core dump COREFILE.\n\
+", stream);
+ fputs_unfiltered ("\
+ --dbx DBX compatibility mode.\n\
+ --directory=DIR Search for source files in DIR.\n\
+ --epoch Output information used by epoch emacs-GDB interface.\n\
+ --exec=EXECFILE Use EXECFILE as the executable.\n\
+ --fullname Output information used by emacs-GDB interface.\n\
+ --help Print this message.\n\
+", stream);
+ fputs_unfiltered ("\
+ --mapped Use mapped symbol files if supported on this system.\n\
+ --nw Do not use a window interface.\n\
+ --nx Do not read .gdbinit file.\n\
+ --quiet Do not print version number on startup.\n\
+ --readnow Fully read symbol files on first access.\n\
+", stream);
+ fputs_unfiltered ("\
+ --se=FILE Use FILE as symbol file and executable file.\n\
+ --symbols=SYMFILE Read symbols from SYMFILE.\n\
+ --tty=TTY Use TTY for input/output by the program being debugged.\n\
+", stream);
+#if defined(TUI)
+ fputs_unfiltered ("\
+ --tui Use a terminal user interface.\n\
+", stream);
#endif
- printf_unfiltered ("%s", 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
-do_nothing (signo)
-int signo;
-{
-}
-
-static void
-init_signals ()
-{
- signal (SIGINT, request_quit);
-
- /* 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);
- if (signal (SIGHUP, do_nothing) != SIG_IGN)
- signal (SIGHUP, disconnect);
- signal (SIGFPE, float_handler);
-
-#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
- signal (SIGWINCH, SIGWINCH_HANDLER);
+ fputs_unfiltered ("\
+ --version Print version information and then exit.\n\
+ -w Use a window interface.\n\
+ --write Set writing into executable and core files.\n\
+ --xdb XDB compatibility mode.\n\
+", stream);
+#ifdef ADDITIONAL_OPTION_HELP
+ fputs_unfiltered (ADDITIONAL_OPTION_HELP, stream);
#endif
+ fputs_unfiltered ("\n\
+For more information, type \"help\" from within GDB, or consult the\n\
+GDB manual (available as on-line info or a printed manual).\n\
+Report bugs to \"bug-gdb@prep.ai.mit.edu\".\
+", stream);
}
-\f
-/* 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 (prrompt, repeat, annotation_suffix)
- char *prrompt;
- int repeat;
- char *annotation_suffix;
-{
- static char *linebuffer = 0;
- static unsigned linelength = 0;
- register char *p;
- char *p1;
- char *rl;
- char *local_prompt = prrompt;
- register int c;
- char *nline;
- char got_eof = 0;
-
- if (annotation_level > 1 && instream == stdin)
- {
- local_prompt = alloca ((prrompt == NULL ? 0 : strlen (prrompt))
- + strlen (annotation_suffix) + 40);
- if (prrompt == NULL)
- local_prompt[0] = '\0';
- else
- strcpy (local_prompt, prrompt);
- 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;
+\f
+/* All I/O sent to the *_filtered and *_unfiltered functions eventually ends up
+ here. The fputs_unfiltered_hook is primarily used by GUIs to collect all
+ output and send it to the GUI, instead of the controlling terminal. Only
+ output to gdb_stdout and gdb_stderr are sent to the hook. Everything else
+ is sent on to fputs to allow file I/O to be handled appropriately. */
- /* Control-C quits instantly if typed while in this loop
- since it should not wait until the user types a newline. */
- immediate_quit++;
-#ifdef STOP_SIGNAL
- if (job_control)
- signal (STOP_SIGNAL, stop_sig);
+void
+fputs_unfiltered (linebuffer, stream)
+ const char *linebuffer;
+ GDB_FILE *stream;
+{
+#if defined(TUI)
+ extern int tui_owns_terminal;
#endif
-
- while (1)
+ /* If anything (GUI, TUI) wants to capture GDB output, this is
+ * the place... the way to do it is to set up
+ * fputs_unfiltered_hook.
+ * Our TUI ("gdb -tui") used to hook output, but in the
+ * new (XDB style) scheme, we do not do that anymore... - RT
+ */
+ if (fputs_unfiltered_hook
+ && (stream == gdb_stdout
+ || stream == gdb_stderr))
+ fputs_unfiltered_hook (linebuffer, stream);
+ else
{
- /* 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 (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++;
-
- free (rl); /* Allocated in readline. */
-
- if (p == linebuffer || *(p - 1) != '\\')
- break;
-
- p--; /* Put on top of '\'. */
- local_prompt = (char *) 0;
- }
+#if defined(TUI)
+ if (tui_version && tui_owns_terminal) {
+ /* If we get here somehow while updating the TUI (from
+ * within a tuiDo(), then we need to temporarily
+ * set up the terminal for GDB output. This probably just
+ * happens on error output.
+ */
+
+ if (stream->ts_streamtype == astring) {
+ gdb_file_adjust_strbuf(strlen(linebuffer), stream);
+ strcat(stream->ts_strbuf, linebuffer);
+ } else {
+ tuiTermUnsetup(0, (tui_version) ? cmdWin->detail.commandInfo.curch : 0);
+ fputs (linebuffer, stream->ts_filestream);
+ tuiTermSetup(0);
+ if (linebuffer[strlen(linebuffer) - 1] == '\n')
+ tuiClearCommandCharCount();
+ else
+ tuiIncrCommandCharCountBy(strlen(linebuffer));
+ }
+ } else {
+ /* The normal case - just do a fputs() */
+ if (stream->ts_streamtype == astring) {
+ gdb_file_adjust_strbuf(strlen(linebuffer), stream);
+ strcat(stream->ts_strbuf, linebuffer);
+ } else fputs (linebuffer, stream->ts_filestream);
+ }
+
-#ifdef STOP_SIGNAL
- if (job_control)
- signal (STOP_SIGNAL, SIG_DFL);
+#else
+ if (stream->ts_streamtype == astring) {
+ gdb_file_adjust_strbuf(strlen(linebuffer), stream);
+ strcat(stream->ts_strbuf, linebuffer);
+ } else fputs (linebuffer, stream->ts_filestream);
#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)
- {
- free (history_value);
- return command_line_input (prrompt, 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);
- free (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)
- {
- if (p == linebuffer)
- return line;
- p1 = linebuffer;
- while (*p1 == ' ' || *p1 == '\t')
- p1++;
- if (!*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. */
- p1 = linebuffer;
- while ((c = *p1++) != '\0')
- {
- if (c == '"')
- while ((c = *p1++) != '"')
- {
- /* Make sure an escaped '"' doesn't make us think the string
- is ended. */
- if (c == '\\')
- parse_escape (&p1);
- if (c == '\0')
- break;
- }
- else if (c == '\'')
- while ((c = *p1++) != '\'')
- {
- /* Make sure an escaped '\'' doesn't make us think the string
- is ended. */
- if (c == '\\')
- parse_escape (&p1);
- if (c == '\0')
- break;
- }
- else if (c == '#')
- {
- /* Found a comment. */
- p1[-1] = '\0';
- break;
- }
- }
-
- /* 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
-/* Read lines from the input stream
- and accumulate them in a chain of struct command_line's
- which is then returned. */
-
-struct command_line *
-read_command_lines ()
-{
- struct command_line *first = 0;
- register struct command_line *next, *tail = 0;
- register char *p, *p1;
- struct cleanup *old_chain = 0;
-
- while (1)
- {
- dont_repeat ();
- p = command_line_input ((char *) NULL, instream == stdin, "commands");
- if (p == NULL)
- /* Treat end of file like "end". */
- break;
-
- /* Remove leading and trailing blanks. */
- while (*p == ' ' || *p == '\t') p++;
- p1 = p + strlen (p);
- while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--;
-
- /* Is this "end"? */
- if (p1 - p == 3 && !strncmp (p, "end", 3))
- break;
-
- /* No => add this line to the chain of command lines. */
- next = (struct command_line *) xmalloc (sizeof (struct command_line));
- next->line = savestring (p, p1 - p);
- next->next = 0;
- if (tail)
- {
- tail->next = next;
- }
- else
- {
- /* We just read the first line.
- From now on, arrange to throw away the lines we have
- if we quit or get an error while inside this function. */
- first = next;
- old_chain = make_cleanup (free_command_lines, &first);
- }
- tail = next;
- }
-
- dont_repeat ();
-
- /* Now we are about to return the chain to our caller,
- so freeing it becomes his responsibility. */
- if (first)
- discard_cleanups (old_chain);
- return first;
-}
-
-/* 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;
-
- while (l)
- {
- 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;
- char *completion;
-
- dont_repeat ();
-
- if (arg == NULL)
- {
- rl_line_buffer[0] = '\0';
- rl_point = 0;
- }
- else
- {
- strcpy (rl_line_buffer, arg);
- rl_point = strlen (arg);
- }
-
- for (completion = symbol_completion_function (rl_line_buffer, i = 0);
- completion;
- completion = symbol_completion_function (rl_line_buffer, ++i))
- printf_unfiltered ("%s\n", 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 != '-')
- 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;
-#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? ", (char *)0))
- 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);
-
- if (from_tty)
- {
- printf_unfiltered ("Type commands for definition of \"%s\".\n\
-End with a line saying just \"end\".\n", comname);
- gdb_flush (gdb_stdout);
- }
-
- cmds = read_command_lines ();
-
- 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;
-
- validate_comname (comname);
-
- c = lookup_cmd (&tem, cmdlist, "", 0, 1);
-
- if (c->class != class_user)
- error ("Command \"%s\" is built-in.", comname);
-
- if (from_tty)
- printf_unfiltered ("Type documentation for \"%s\".\n\
-End with a line saying just \"end\".\n", comname);
-
- doclines = read_command_lines ();
-
- if (c->doc) free (c->doc);
-
- {
- register struct command_line *cl1;
- register int len = 0;
-
- for (cl1 = doclines; cl1; cl1 = cl1->next)
- len += strlen (cl1->line) + 1;
-
- c->doc = (char *) xmalloc (len + 1);
- *c->doc = 0;
-
- for (cl1 = doclines; cl1; cl1 = cl1->next)
- {
- strcat (c->doc, cl1->line);
- if (cl1->next)
- strcat (c->doc, "\n");
- }
- }
-
- free_command_lines (&doclines);
-}
-\f
-static void
-print_gnu_advertisement()
-{
- printf_unfiltered ("\
-GDB is free software and you are welcome to distribute copies of it\n\
- under certain conditions; type \"show copying\" to see the conditions.\n\
-There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\
-");
-}
-
-static void
-print_gdb_version (stream)
- GDB_FILE *stream;
-{
- fprintf_filtered (stream, "\
-GDB %s (%s", version, host_name);
-
- if (!STREQ (host_name, target_name))
- fprintf_filtered (stream, " --target %s", target_name);
-
- fprintf_filtered (stream, "), ");
- wrap_here("");
- fprintf_filtered (stream, "Copyright 1994 Free Software Foundation, Inc.");
-}
-
-/* ARGSUSED */
-static void
-show_version (args, from_tty)
- char *args;
- int from_tty;
-{
- immediate_quit++;
- print_gnu_advertisement ();
- print_gdb_version (gdb_stdout);
- printf_filtered ("\n");
- immediate_quit--;
-}
-\f
-/* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb
- is obsolete. */
-
-void
-print_prompt ()
-{
- printf_unfiltered ("%s", prompt);
- gdb_flush (gdb_stdout);
-}
-\f
-static void
-quit_command (args, from_tty)
- char *args;
- int from_tty;
-{
- if (inferior_pid != 0 && target_has_execution)
- {
- if (attach_flag)
- {
- if (query ("The program is running. Quit anyway (and detach it)? "))
- target_detach (args, from_tty);
- else
- error ("Not confirmed.");
- }
- else
- {
- if (query ("The program is running. Quit anyway (and kill it)? "))
- target_kill ();
- else
- error ("Not confirmed.");
- }
- }
- /* 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);
-
- exit (0);
-}
-
-/* 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 ()
-{
- return gdb_has_a_terminal () && (instream == stdin) & caution;
-}
-\f
-/* ARGSUSED */
-static void
-pwd_command (args, from_tty)
- char *args;
- int from_tty;
-{
- if (args) error ("The \"pwd\" command does not take an argument: %s", args);
- getcwd (dirbuf, sizeof (dirbuf));
-
- if (!STREQ (dirbuf, current_directory))
- printf_unfiltered ("Working directory %s\n (canonically %s).\n",
- current_directory, dirbuf);
- else
- printf_unfiltered ("Working directory %s.\n", current_directory);
-}
-
-static 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);
-
- len = strlen (dir);
- dir = savestring (dir, len - (len > 1 && dir[len-1] == '/'));
- if (dir[0] == '/')
- current_directory = dir;
- else
- {
- if (current_directory[0] == '/' && current_directory[1] == '\0')
- current_directory = concat (current_directory, dir, NULL);
- else
- current_directory = concat (current_directory, "/", dir, NULL);
- free (dir);
- }
-
- /* Now simplify any occurrences of `.' and `..' in the pathname. */
-
- found_real_path = 0;
- for (p = current_directory; *p;)
- {
- if (p[0] == '/' && p[1] == '.' && (p[2] == 0 || p[2] == '/'))
- strcpy (p, p + 2);
- else if (p[0] == '/' && p[1] == '.' && p[2] == '.'
- && (p[3] == 0 || 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 && 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;
- }
- }
-
- 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;
-};
-
-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;
-}
-
-/* ARGSUSED */
-static 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 == 0)
- perror_with_name (file);
-
- make_cleanup (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);
-}
-
-/* ARGSUSED */
-static void
-echo_command (text, from_tty)
- char *text;
- int from_tty;
-{
- 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);
-}
-
-\f
-/* Functions to manipulate command line editing control variables. */
-
-/* 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;
-{
- /* 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 PARAMS ((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_address (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 (args, from_tty, c)
- 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 */
-static void
-set_history (args, from_tty)
- 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;
-{
- 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;
-{
- 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.";
- }
-}
-
-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.");
-}
-
-/* Return whether we are running a batch file or from terminal. */
-int
-batch_mode ()
-{
- return !(instream == stdin && ISATTY (stdin));
-}
-
-\f
-static void
-init_cmd_lists ()
-{
- cmdlist = NULL;
- infolist = NULL;
- enablelist = NULL;
- disablelist = NULL;
- deletelist = NULL;
- enablebreaklist = NULL;
- setlist = NULL;
- unsetlist = NULL;
- showlist = NULL;
- sethistlist = NULL;
- showhistlist = NULL;
- unsethistlist = NULL;
-#if MAINTENANCE_CMDS
- maintenancelist = NULL;
- maintenanceinfolist = NULL;
- maintenanceprintlist = NULL;
-#endif
- 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
- * overrides all of this.
- */
-
-static void
-init_history()
-{
- 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. */
- history_filename = concat (current_directory, "/.gdb_history", NULL);
- }
- read_history (history_filename);
-}
-
-static void
-init_main ()
-{
- struct cmd_list_element *c;
-
-#ifdef DEFAULT_PROMPT
- prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT));
-#else
- prompt = savestring ("(gdb) ", 6);
-#endif
-
- /* 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 (*)()) symbol_completion_function;
- rl_completer_word_break_characters = gdb_completer_word_break_characters;
- rl_completer_quote_characters = gdb_completer_quote_characters;
- rl_readline_name = "gdb";
-
- /* 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);
- 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;
-
- add_show_from_set
- (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt,
- "Set 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 do not take 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);
-
-
- 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);
-
- 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 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);
-
- 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\
-Use \"on\" to enable 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;
-
- 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);
-
- add_show_from_set
- (add_set_cmd ("confirm", class_support, var_boolean,
- (char *)&caution,
- "Set whether to confirm potentially dangerous operations.",
- &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 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);
-
- /* 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);
}
projects / deliverable / binutils-gdb.git / blobdiff