main.c   [plain text]

/* 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, 2002, 2003, 2004, 2005
   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 "top.h"
#include "target.h"
#include "inferior.h"
#include "symfile.h"
#include "gdbcore.h"

#include "exceptions.h"
#include "getopt.h"

#include <sys/types.h>
#include "gdb_stat.h"
#include <ctype.h>

#include "gdb_string.h"
#include "event-loop.h"
#include "ui-out.h"
#include "osabi.h"
#include "arch-utils.h"

#include "interps.h"
#include "main.h"

#include <pthread.h>

/* If nonzero, display time usage both at startup and for each command.  */

int display_time;

/* If nonzero, display space usage both at startup and for each command.  */

int display_space;

/* The selected interpreter.  This will be used as a set command
   variable, so it should always be malloc'ed - since
   do_setshow_command will free it. */
char *interpreter_p;

/* Whether xdb commands will be handled */
int xdb_commands = 0;

/* Whether dbx commands will be handled */
int dbx_commands = 0;

/* System root path, used to find libraries etc.  */
char *gdb_sysroot = 0;

struct ui_file *gdb_stdout;
struct ui_file *gdb_stderr;
struct ui_file *gdb_stdlog;
struct ui_file *gdb_stdin;
/* APPLE LOCAL gdb_null */
struct ui_file *gdb_null;
/* target IO streams */
struct ui_file *gdb_stdtargin;
struct ui_file *gdb_stdtarg;
struct ui_file *gdb_stdtargerr;

/* Whether to enable writing into executable and core files */
extern int write_files;

static void print_gdb_help (struct ui_file *);

/* These two are used to set the external editor commands when gdb is farming
   out files to be edited by another program. */

extern char *external_editor_command;

/* Call command_loop.  If it happens to return, pass that through as a
   non-zero return status. */

static int
captured_command_loop (void *data)
{
  current_interp_command_loop ();
  /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
     would clean things up (restoring the cleanup chain) to the state
     they were just prior to the call.  Technically, this means that
     the do_cleanups() below is redundant.  Unfortunately, many FUNCs
     are not that well behaved.  do_cleanups should either be replaced
     with a do_cleanups call (to cover the problem) or an assertion
     check to detect bad FUNCs code. */
  do_cleanups (ALL_CLEANUPS);
  /* If the command_loop returned, normally (rather than threw an
     error) we try to quit. If the quit is aborted, catch_errors()
     which called this catch the signal and restart the command
     loop. */
  quit_command (NULL, instream == stdin);
  return 1;
}

static int
captured_main (void *data)
{
  /* If you add initializations here, you also need to add then to the
     proc do_steps_and_nexts in selftest.exp.  */
  struct captured_main_args *context = data;
  int argc = context->argc;
  char **argv = context->argv;
  int count;
  static int quiet = 0;
  static int batch = 0;
  static int set_args = 0;

  /* Pointers to various arguments from command line.  */
  char *symarg = NULL;
  char *execarg = NULL;
  char *corearg = NULL;
  char *cdarg = NULL;
  char *ttyarg = NULL;
  /* APPLE LOCAL: Set the osabi via option.  */
  char *osabiarg = NULL;  


  /* These are static so that we can take their address in an initializer.  */
  static int print_help;
  static int print_version;

  /* Pointers to all arguments of --command option.  */
  char **cmdarg;
  /* Allocated size of cmdarg.  */
  int cmdsize;
  /* Number of elements of cmdarg used.  */
  int ncmd;

  /* Indices of all arguments of --directory option.  */
  char **dirarg;
  /* Allocated size.  */
  int dirsize;
  /* Number of elements used.  */
  int ndir;

  /* APPLE LOCAL globalbuf */
  struct stat homebuf, cwdbuf, globalbuf;
  char *homedir;
  /* APPLE LOCAL attach -waitfor */
  char *attach_waitfor = NULL;
  /* APPLE LOCAL: set the architecture.  */
  char *initial_arch = NULL;

  int i;

  long time_at_startup = get_run_time ();

#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
  setlocale (LC_MESSAGES, "");
#endif
#if defined (HAVE_SETLOCALE)
  setlocale (LC_CTYPE, "");
#endif
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);

  /* APPLE LOCAL memory */
#ifdef USE_MMALLOC
  init_mmalloc_default_pool ((PTR) NULL);
#endif
 
  /* This needs to happen before the first use of malloc.  */
  init_malloc (NULL);

#ifdef HAVE_SBRK
  lim_at_start = (char *) sbrk (0);
#endif

#if defined (ALIGN_STACK_ON_STARTUP)
  i = (int) &count & 0x3;
  if (i != 0)
    alloca (4 - i);
#endif

  cmdsize = 1;
  cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg));
  ncmd = 0;
  dirsize = 1;
  dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
  ndir = 0;

  quit_flag = 0;
  line = (char *) xmalloc (linesize);
  line[0] = '\0';		/* Terminate saved (now empty) cmd line */
  instream = stdin;

  getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
  current_directory = gdb_dirbuf;

  /* APPLE LOCAL gdb_null */
  gdb_null = ui_file_new ();
  gdb_stdout = stdio_fileopen (stdout);
  gdb_stderr = stdio_fileopen (stderr);
  gdb_stdlog = gdb_stderr;	/* for moment */
  gdb_stdtarg = gdb_stderr;	/* for moment */
  gdb_stdin = stdio_fileopen (stdin);
  gdb_stdtargerr = gdb_stderr;	/* for moment */
  gdb_stdtargin = gdb_stdin;	/* for moment */

  /* APPLE LOCAL: set our main thread's name */
#ifdef HAVE_PTHREAD_SETNAME_NP
  pthread_setname_np ("gdb main thread");
#endif

  /* APPLE LOCAL: raise our file descriptor limit a lot.  */
  unlimit_file_rlimit ();

  /* Set the sysroot path.  */
#ifdef TARGET_SYSTEM_ROOT_RELOCATABLE
  gdb_sysroot = make_relative_prefix (argv[0], BINDIR, TARGET_SYSTEM_ROOT);
  if (gdb_sysroot)
    {
      struct stat s;
      int res = 0;

      if (stat (gdb_sysroot, &s) == 0)
	if (S_ISDIR (s.st_mode))
	  res = 1;

      if (res == 0)
	{
	  xfree (gdb_sysroot);
	  gdb_sysroot = TARGET_SYSTEM_ROOT;
	}
    }
  else
    gdb_sysroot = TARGET_SYSTEM_ROOT;
#else
#if defined (TARGET_SYSTEM_ROOT)
  gdb_sysroot = TARGET_SYSTEM_ROOT;
#else
  gdb_sysroot = "";
#endif
#endif

  /* There will always be an interpreter.  Either the one passed into
     this captured main, or one specified by the user at start up, or
     the console.  Initialize the interpreter to the one requested by 
     the application.  */
  interpreter_p = xstrdup (context->interpreter_p);

  /* Parse arguments and options.  */
  {
    int c;
    /* When var field is 0, use flag field to record the equivalent
       short option (or arbitrary numbers starting at 10 for those
       with no equivalent).  */
    enum {
      OPT_SE = 10,
      OPT_CD,
      OPT_ANNOTATE,
      OPT_STATISTICS,
      OPT_TUI,
      OPT_NOWINDOWS,
      OPT_WINDOWS,
      OPT_WAITFOR,  /* APPLE LOCAL */
      OPT_ARCH,     /* APPLE LOCAL */
      OPT_OSABI	    /* APPLE LOCAL */
    };
    static struct option long_options[] =
    {
#if defined(TUI)
      {"tui", no_argument, 0, OPT_TUI},
#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},
      {"quiet", no_argument, &quiet, 1},
      {"q", no_argument, &quiet, 1},
      {"silent", no_argument, &quiet, 1},
      {"nx", no_argument, &inhibit_gdbinit, 1},
      {"n", no_argument, &inhibit_gdbinit, 1},
      {"batch", no_argument, &batch, 1},
      {"epoch", no_argument, &epoch_interface, 1},

    /* This is a synonym for "--annotate=1".  --annotate is now preferred,
       but keep this here for a long time because people will be running
       emacses which use --fullname.  */
      {"fullname", no_argument, 0, 'f'},
      {"f", no_argument, 0, 'f'},

      {"annotate", required_argument, 0, OPT_ANNOTATE},
      {"help", no_argument, &print_help, 1},
      {"se", required_argument, 0, OPT_SE},
      {"symbols", required_argument, 0, 's'},
      {"s", required_argument, 0, 's'},
      {"exec", required_argument, 0, 'e'},
      {"e", required_argument, 0, 'e'},
      {"core", required_argument, 0, 'c'},
      {"c", required_argument, 0, 'c'},
      {"pid", required_argument, 0, 'p'},
      {"p", required_argument, 0, 'p'},
      {"command", required_argument, 0, 'x'},
      {"version", no_argument, &print_version, 1},
      {"x", required_argument, 0, 'x'},
#ifdef GDBTK
      {"tclcommand", required_argument, 0, 'z'},
      {"enable-external-editor", no_argument, 0, 'y'},
      {"editor-command", required_argument, 0, 'w'},
#endif
      {"ui", required_argument, 0, 'i'},
      {"interpreter", required_argument, 0, 'i'},
      {"i", required_argument, 0, 'i'},
      {"directory", required_argument, 0, 'd'},
      {"d", required_argument, 0, 'd'},
      {"cd", required_argument, 0, OPT_CD},
      {"tty", required_argument, 0, 't'},
      {"baud", required_argument, 0, 'b'},
      {"b", required_argument, 0, 'b'},
      {"nw", no_argument, NULL, OPT_NOWINDOWS},
      {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
      {"w", no_argument, NULL, OPT_WINDOWS},
      {"windows", no_argument, NULL, OPT_WINDOWS},
      {"statistics", no_argument, 0, OPT_STATISTICS},
      {"write", no_argument, &write_files, 1},
      {"args", no_argument, &set_args, 1},
/* APPLE LOCAL: */
      {"waitfor", required_argument, 0, OPT_WAITFOR},
/* APPLE LOCAL: */
      {"arch", required_argument, 0, OPT_ARCH},
/* APPLE LOCAL: */
      {"osabi", required_argument, 0, OPT_OSABI},
      {"l", required_argument, 0, 'l'},
      {0, no_argument, 0, 0}
    };

    while (1)
      {
	int option_index;

	c = getopt_long_only (argc, argv, "",
			      long_options, &option_index);
	if (c == EOF || set_args)
	  break;

	/* Long option that takes an argument.  */
	if (c == 0 && long_options[option_index].flag == 0)
	  c = long_options[option_index].val;

	switch (c)
	  {
	  case 0:
	    /* Long option that just sets a flag.  */
	    break;
	  case OPT_SE:
	    symarg = optarg;
	    execarg = optarg;
	    break;
	  case OPT_CD:
	    cdarg = optarg;
	    break;
	  case OPT_ANNOTATE:
	    /* FIXME: what if the syntax is wrong (e.g. not digits)?  */
	    annotation_level = atoi (optarg);
	    break;
	  case OPT_STATISTICS:
	    /* Enable the display of both time and space usage.  */
	    display_time = 1;
	    display_space = 1;
	    break;
	  case OPT_TUI:
	    /* --tui is equivalent to -i=tui.  */
	    xfree (interpreter_p);
	    interpreter_p = xstrdup ("tui");
	    break;
	  case OPT_WINDOWS:
	    /* FIXME: cagney/2003-03-01: Not sure if this option is
               actually useful, and if it is, what it should do.  */
	    use_windows = 1;
	    break;
	  case OPT_NOWINDOWS:
	    /* -nw is equivalent to -i=console.  */
	    xfree (interpreter_p);
	    interpreter_p = xstrdup (INTERP_CONSOLE);
	    use_windows = 0;
	    break;
	  /* APPLE LOCAL: */
	  case OPT_WAITFOR:
	    attach_waitfor = (char *) xmalloc (12 + strlen (optarg));
	    sprintf (attach_waitfor, "-waitfor \"%s\"", optarg);
	    break;
	  /* APPLE LOCAL: */
	  case OPT_ARCH:
	    initial_arch = xstrdup (optarg);
	    break;
	  /* APPLE LOCAL: Set the osabi via option. This option was 
	     added along with a modification to the gdb driver shell script
	     for armv6. Binaries with the "arm" architecture (ARM v4T)
	     and "armv6" (ARM v6) can be inter mixed on armv6 capaable 
	     targets since all instructions in the ARM v4T instruction set
	     are present in the ARM v6 instruction set. The same gdb
	     executable is used for both, and the osabi set/show variable
	     controls which gets used for cross targets. We need to set this
	     variable prior to loading any executables so that the correct
	     slice of a fat file can be selected. Now gdb can be launched
	     with the "armv6" arch along with an executable and the correct
	     slice will be selected:
	     gdb -arch armv6 <file>  */
	  case OPT_OSABI:
	    osabiarg = optarg;
	    break;
	  /* APPLE LOCAL END */
	  case 'f':
	    annotation_level = 1;
/* We have probably been invoked from emacs.  Disable window interface.  */
	    use_windows = 0;
	    break;
	  case 's':
	    symarg = optarg;
	    break;
	  case 'e':
	    execarg = optarg;
	    break;
	  case 'c':
	    corearg = optarg;
	    break;
	  case 'p':
	    /* "corearg" is shared by "--core" and "--pid" */
	    corearg = optarg;
	    break;
	  case 'x':
	    cmdarg[ncmd++] = optarg;
	    if (ncmd >= cmdsize)
	      {
		cmdsize *= 2;
		cmdarg = (char **) xrealloc ((char *) cmdarg,
					     cmdsize * sizeof (*cmdarg));
	      }
	    break;
#ifdef GDBTK
	  case 'z':
	    {
extern int gdbtk_test (char *);
	      if (!gdbtk_test (optarg))
		{
		  fprintf_unfiltered (gdb_stderr, _("%s: unable to load tclcommand file \"%s\""),
				      argv[0], optarg);
		  exit (1);
		}
	      break;
	    }
	  case 'y':
	    /* Backwards compatibility only.  */
	    break;
	  case 'w':
	    {
	      external_editor_command = xstrdup (optarg);
	      break;
	    }
#endif /* GDBTK */
	  case 'i':
	    xfree (interpreter_p);
	    interpreter_p = xstrdup (optarg);
	    break;
	  case 'd':
	    dirarg[ndir++] = optarg;
	    if (ndir >= dirsize)
	      {
		dirsize *= 2;
		dirarg = (char **) xrealloc ((char *) dirarg,
					     dirsize * sizeof (*dirarg));
	      }
	    break;
	  case 't':
	    ttyarg = optarg;
	    break;
	  case 'q':
	    quiet = 1;
	    break;
	  case 'b':
	    {
	      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 baud rate to `%s'.\n"), optarg);
	      else
		baud_rate = i;
	    }
            break;
	  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;

	  case '?':
	    fprintf_unfiltered (gdb_stderr,
			_("Use `%s --help' for a complete list of options.\n"),
				argv[0]);
	    exit (1);
	  }
      }

    /* If --help or --version, disable window interface.  */
    if (print_help || print_version)
      {
	use_windows = 0;
      }

    if (set_args)
      {
	/* The remaining options are the command-line options for the
	   inferior.  The first one is the sym/exec file, and the rest
	   are arguments.  */
	if (optind >= argc)
	  {
	    fprintf_unfiltered (gdb_stderr,
				_("%s: `--args' specified but no program specified\n"),
				argv[0]);
	    exit (1);
	  }
	symarg = argv[optind];
	execarg = argv[optind];
	++optind;
	set_inferior_args_vector (argc - optind, &argv[optind]);
      }
    else
      {
	/* OK, that's all the options.  The other arguments are filenames.  */
	count = 0;
	for (; optind < argc; optind++)
	  switch (++count)
	    {
	    case 1:
	      symarg = argv[optind];
	      execarg = argv[optind];
	      break;
	    case 2:
	      /* The documentation says this can be a "ProcID" as well. 
	         We will try it as both a corefile and a pid.  */
	      corearg = argv[optind];
	      break;
	    case 3:
	      fprintf_unfiltered (gdb_stderr,
				  _("Excess command line arguments ignored. (%s%s)\n"),
				  argv[optind], (optind == argc - 1) ? "" : " ...");
	      break;
	    }
      }
    if (batch)
      quiet = 1;
  }

  /* Initialize all files.  Give the interpreter a chance to take
     control of the console via the deprecated_init_ui_hook ().  */
  gdb_init (argv[0]);

  /* Do these (and anything which might call wrap_here or *_filtered)
     after initialize_all_files() but before the interpreter has been
     installed.  Otherwize the help/version messages will be eaten by
     the interpreter's output handler.  */

  if (print_version)
    {
      print_gdb_version (gdb_stdout);
      wrap_here ("");
      printf_filtered ("\n");
      exit (0);
    }

  if (print_help)
    {
      print_gdb_help (gdb_stdout);
      fputs_unfiltered ("\n", gdb_stdout);
      exit (0);
    }

  /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
     GDB retain the old MI1 interpreter startup behavior.  Output the
     copyright message before the interpreter is installed.  That way
     it isn't encapsulated in MI output.  */
  if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
    {
      /* APPLE LOCAL begin don't print dots */
      /* Print all the junk at the top. */
      print_gdb_version (gdb_stdout);
      printf_filtered ("\n");
      /* APPLE LOCAL end don't print dots */
      wrap_here ("");
      gdb_flush (gdb_stdout);	/* Force to screen during slow operations */
    }


  /* APPLE LOCAL begin */
  if (state_change_hook)
    {
      state_change_hook (STATE_ACTIVE);
    }
  /* APPLE LOCAL end */
  
  /* Install the default UI.  All the interpreters should have had a
     look at things by now.  Initialize the default interpreter. */

  {
    /* Find it.  */
    struct interp *interp = interp_lookup (interpreter_p);
    if (interp == NULL)
      error (_("Interpreter `%s' unrecognized"), interpreter_p);
    /* Install it.  */
    /* APPLE LOCAL clarity */
    if (interp_set (interp) == NULL)
      {
        fprintf_unfiltered (gdb_stderr,
			    "Interpreter `%s' failed to initialize.\n",
                            interpreter_p);
        exit (1);
      }
  }

  /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
     GDB retain the old MI1 interpreter startup behavior.  Output the
     copyright message after the interpreter is installed when it is
     any sane interpreter.  */
  if (!quiet && !current_interp_named_p (INTERP_MI1))
    {
      /* Print all the junk at the top, with trailing "..." if we are about
         to read a symbol file (possibly slowly).  */
      print_gdb_version (gdb_stdout);
      if (symarg)
	printf_filtered ("..");
      wrap_here ("");
      gdb_flush (gdb_stdout);	/* Force to screen during slow operations */
    }

  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: ");

  /* APPLE LOCAL begin move inits up */
  /* Make sure that they are zero in case one of them fails (this
     guarantees that they won't match if either exists).  */
  
  memset (&homebuf, 0, sizeof (struct stat));
  memset (&cwdbuf, 0, sizeof (struct stat));
  /* APPLE LOCAL end move inits up */
  /* APPLE LOCAL begin global gdbinit */
  memset (&globalbuf, 0, sizeof (struct stat));
  stat (gdbinit_global, &globalbuf);
  if (!inhibit_gdbinit)
    {
      /* if (!SET_TOP_LEVEL ()) */
	 source_file (gdbinit_global, 0);
    }
  do_cleanups (ALL_CLEANUPS);
  /* APPLE LOCAL end global gdbinit */
 
  /* APPLE LOCAL: Set the $_Xcode convenience variable at '0' before sourcing
     any .gdbinit files.  Xcode will override this to 1 when it is launching
     gdb but we need to start with a value of 0 so .gdbinit files can use it 
     in conditional expressions.  */
  set_internalvar (lookup_internalvar ("_Xcode"),
                   value_from_longest (builtin_type_int, (LONGEST) 0));

  /* 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");
  if (homedir)
    {
      char *homeinit = xstrprintf ("%s/%s", homedir, gdbinit);

      /* APPLE LOCAL move inits up */
      stat (homeinit, &homebuf);
      /* APPLE LOCAL gdbinit */
      if (!inhibit_gdbinit)
	if ((globalbuf.st_dev != homebuf.st_dev) || (globalbuf.st_ino != homebuf.st_ino))
	  {
	    catch_command_errors (source_file, homeinit, 0, RETURN_MASK_ALL);
	  }
    }

  /* Now perform all the actions indicated by the arguments.  */
  if (cdarg != NULL)
    {
      catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
    }

  for (i = 0; i < ndir; i++)
    catch_command_errors (directory_command, dirarg[i], 0, RETURN_MASK_ALL);
  xfree (dirarg);

  /* APPLE LOCAL: If an architecture has been supplied, process it. 
     FIXME: Note, this is a TOTAL hack.  There should be some gdbarch'y type
     function that processes these options.  The odd thing is that you would
     want the SAME function for all the gdbarch'es that are registered, so
     it actually lives a little above the gdbarch....  
     Not sure how to do that.  So instead, I just hack...  */
#if defined (USE_POSIX_SPAWN) || defined (USE_ARCH_FOR_EXEC)
  if (initial_arch != NULL)
    {
      char *arch_string = NULL;
      char *osabi_string;
#if defined (TARGET_POWERPC)
      if (strcmp (initial_arch, "ppc") == 0)
	{
	  arch_string = "powerpc:common";
	  osabi_string = "Darwin";
	}
      else if (strcmp (initial_arch, "ppc64") == 0)
	{
	  arch_string = "powerpc:common64";
	  osabi_string = "Darwin64";
	}
      else
	  warning ("invalid argument \"%s\" for \"--arch\", should be one of "
		 "\"ppc\" or \"ppc64\"\n", initial_arch);
#elif defined (TARGET_I386)
      if (strcmp (initial_arch, "i386") == 0)
	{
	  arch_string = "i386";
	  osabi_string = "Darwin";
	}
      else if (strcmp (initial_arch, "x86_64") == 0)
	{
	  arch_string = "i386:x86-64";
	  osabi_string = "Darwin64";
	}
      else
	warning ("invalid argument \"%s\" for \"--arch\", should be one of "
		 "\"i386\" or \"x86_64\"\n", initial_arch);
#elif defined (TARGET_ARM)
      if (strcmp (initial_arch, "arm") == 0)
	{
	  arch_string = "arm";
	  osabi_string = "Darwin";
	}
      else if (strstr (initial_arch, "armv4") == initial_arch)
	{
	  arch_string = "armv4t";
	  osabi_string = "Darwin";
	}
      else if (strstr (initial_arch, "armv6") == initial_arch)
	{
	  arch_string = "armv6";
	  osabi_string = "DarwinV6";
	}
      else if (strstr (initial_arch, "armv7") == initial_arch)
	{
	  arch_string = "armv7";
	  osabi_string = "DarwinV7";
	}
      else
	warning ("invalid argument \"%s\" for \"--arch\", should be one of "
		 "\"arm\", \"armv4*\", \"armv6*\", or \"armv7*\"\n", 
		 initial_arch);
#endif
      if (arch_string != NULL)
	{
	  set_architecture_from_string (arch_string);
	  set_osabi_from_string (osabi_string);
	}
      else
	{
#if defined (TARGET_ARM) && defined (NM_NEXTSTEP)
	  /* Always set the OSABI so we are sure to pick up the right slices 
	     for ARM.  */
	  extern enum gdb_osabi arm_set_osabi_from_host_info ();
	  arm_set_osabi_from_host_info ();
#endif	
    }
    }
#if defined (TARGET_ARM) && defined (NM_NEXTSTEP)
  else
    {
      /* Always set the OSABI so we are sure to pick up the right slices 
         for ARM.  */
      extern enum gdb_osabi arm_set_osabi_from_host_info ();
      arm_set_osabi_from_host_info ();
    }
#endif	

#else
  warning ("--arch option not supported in this gdb.");
#endif

  /* APPLE LOCAL BEGIN: Set the osabi via option.  */
  if (osabiarg != NULL)
    set_osabi_option (osabiarg);
  /* APPLE LOCAL END */

  if (execarg != NULL
      && symarg != NULL
      && strcmp (execarg, symarg) == 0)
    {
      /* The exec file and the symbol-file are the same.  If we can't
         open it, better only print one error message.
         catch_command_errors returns non-zero on success! */
      if (catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL))
	catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL);
    }
  else
    {
      if (execarg != NULL)
	catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL);
      if (symarg != NULL)
	catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL);
    }

  /* APPLE LOCAL begin */
  if (state_change_hook && symarg != NULL)
    {
      state_change_hook (STATE_INFERIOR_LOADED);
    }
  /* APPLE LOCAL end */
  
  /* APPLE LOCAL begin */
  if (attach_waitfor != NULL)
    {
      printf_filtered ("\n");
      catch_command_errors (attach_command, attach_waitfor, 0, RETURN_MASK_ALL);
    }
    
  /* After the symbol file has been read, print a newline to get us
     beyond the copyright line...  But errors should still set off
     the error message with a (single) blank line.  */
  if (!quiet)
    printf_filtered ("\n");
  error_pre_print = "\n";
  quit_pre_print = error_pre_print;
  warning_pre_print = _("\nwarning: ");

  if (corearg != NULL)
    {
      if (catch_command_errors (core_file_attach, corearg, !batch, RETURN_MASK_ALL) == 0)
	{
	  /* See if the core file is really a PID. */
	  /* Be careful, we have quoted the corearg above... */
	  if (corearg[0] == '"')
	    {
	      int len = strlen (corearg);
	      if (corearg[len - 1] == '"')
		{
		  corearg[len - 1] = '\0';
		  corearg += 1;
		}
	    }

	  if (isdigit (corearg[0]))
	    catch_command_errors (attach_command, corearg, !batch, RETURN_MASK_ALL);
	}
    }

  if (ttyarg != NULL)
    catch_command_errors (tty_command, ttyarg, !batch, RETURN_MASK_ALL);

  /* Error messages should no longer be distinguished with extra output. */
  error_pre_print = NULL;
  quit_pre_print = NULL;
  warning_pre_print = _("warning: ");

  /* Read the .gdbinit file in the current directory, *if* it isn't
     the same as the $HOME/.gdbinit file (it should exist, also).  */

  stat (gdbinit, &cwdbuf);
  if (!inhibit_gdbinit)
    if (((globalbuf.st_dev != cwdbuf.st_dev) || (globalbuf.st_ino != cwdbuf.st_ino))
	&& ((homebuf.st_dev != cwdbuf.st_dev) || (homebuf.st_ino != cwdbuf.st_ino)))
      {
        /* APPLE LOCAL: fix for CVE-2005-1705 */
        if (cwdbuf.st_uid == getuid ())
	  catch_command_errors (source_file, gdbinit, 0, RETURN_MASK_ALL);
      }
  
  /* These need to be set this late in the initialization to ensure that
     they are defined for the current environment.  They define the
     radix variables needed by a save-breakpoints file to preserve the
     radix across the breakpoints restoration assuming they are restored
     using the -x (-command) command line options.  */
     
  set_internalvar (lookup_internalvar ("input_radix"),
		   value_from_longest (builtin_type_int, (LONGEST) input_radix));
  set_internalvar (lookup_internalvar ("output_radix"),
		   value_from_longest (builtin_type_int, (LONGEST) output_radix));

  for (i = 0; i < ncmd; i++)
    {
#if 0
      /* NOTE: cagney/1999-11-03: SET_TOP_LEVEL() was a macro that
         expanded into a call to setjmp().  */
      if (!SET_TOP_LEVEL ()) /* NB: This is #if 0'd out */
	{
	  /* 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_file (cmdarg[i], !batch);
	  do_cleanups (ALL_CLEANUPS);
	}
#endif
      catch_command_errors (source_file, cmdarg[i], !batch, RETURN_MASK_ALL);
    }
  xfree (cmdarg);

  /* Read in the old history after all the command files have been read. */
  init_history ();

  if (batch)
    {
      if (attach_flag)
	/* Either there was a problem executing the command in the
	   batch file aborted early, or the batch file forgot to do an
	   explicit detach.  Explicitly detach the inferior ensuring
	   that there are no zombies.  */
	target_detach (NULL, 0);
      
      /* We have hit the end of the batch file.  */
      exit (0);
    }

  /* Do any host- or target-specific hacks.  This is used for i960 targets
     to force the user to set a nindy target and spec its parameters.  */

#ifdef BEFORE_MAIN_LOOP_HOOK
  BEFORE_MAIN_LOOP_HOOK;
#endif

  /* Show time and/or space usage.  */

  if (display_time)
    {
      long init_time = get_run_time () - time_at_startup;

      printf_unfiltered (_("Startup time: %ld.%06ld\n"),
			 init_time / 1000000, init_time % 1000000);
    }

  if (display_space)
    {
#ifdef HAVE_SBRK
      extern char **environ;
      char *lim = (char *) sbrk (0);

      printf_unfiltered (_("Startup size: data size %ld\n"),
			 (long) (lim - (char *) &environ));
#endif
    }

#if 0
  /* FIXME: cagney/1999-11-06: The original main loop was like: */
  while (1)
    {
      if (!SET_TOP_LEVEL ())
	{
	  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 (deprecated_command_loop_hook)
	    deprecated_command_loop_hook ();
	  else
	    deprecated_command_loop ();
	  quit_command ((char *) 0, instream == stdin);
	}
    }
  /* NOTE: If the command_loop() returned normally, the loop would
     attempt to exit by calling the function quit_command().  That
     function would either call exit() or throw an error returning
     control to SET_TOP_LEVEL. */
  /* NOTE: The function do_cleanups() was called once each time round
     the loop.  The usefulness of the call isn't clear.  If an error
     was thrown, everything would have already been cleaned up.  If
     command_loop() returned normally and quit_command() was called,
     either exit() or error() (again cleaning up) would be called. */
#endif
  /* NOTE: cagney/1999-11-07: There is probably no reason for not
     moving this loop and the code found in captured_command_loop()
     into the command_loop() proper.  The main thing holding back that
     change - SET_TOP_LEVEL() - has been eliminated. */
  while (1)
    {
      catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
    }
  /* No exit -- exit is through quit_command.  */
}

int
gdb_main (struct captured_main_args *args)
{
  use_windows = args->use_windows;
  catch_errors (captured_main, args, "", RETURN_MASK_ALL);
  /* The only way to end up here is by an error (normal exit is
     handled by quit_force()), hence always return an error status.  */
  return 1;
}


/* 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.  */

static void
print_gdb_help (struct ui_file *stream)
{
  fputs_unfiltered (_("\
This is the GNU debugger.  Usage:\n\n\
    gdb [options] [executable-file [core-file or process-id]]\n\
    gdb [options] --args executable-file [inferior-arguments ...]\n\n\
Options:\n\n\
"), stream);
  fputs_unfiltered (_("\
  --args             Arguments after executable-file are passed to inferior\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\
  --pid=PID          Attach to running process PID.\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 (_("\
  --interpreter=INTERP\n\
                     Select a specific interpreter / user interface\n\
"), stream);
  fputs_unfiltered (_("\
  -l TIMEOUT         Set timeout in seconds for remote debugging.\n\
  --mapped           Use mapped symbol files if supported on this system.\n\
  --nw		     Do not use a window interface.\n\
  --nx               Do not read "), stream);
  fputs_unfiltered (gdbinit, stream);
  fputs_unfiltered (_(" 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
  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\
  --waitfor=PROCNAME Poll continuously for PROCNAME to launch; attach to it.\n\
  --arch=ARCH        Run the slice of a Universal file given by ARCH.\n\
  --osabi=OSABI      Set the osabi prior to loading any executables.\n\
"), stream);
  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@gnu.org\".\
"), stream);
}

#if 0
#include "cli/cli-cmds.h"
#include "cli/cli-decode.h"

struct cmd_list_element *
add_set_cmd (char *name,
	     enum command_class class,
	     var_types var_type,
	     void *var,
	     char *doc,
	     struct cmd_list_element **list)
{
  return deprecated_add_set_cmd (name, class, var_type, var, doc, list);
}
#endif