360 lines
8.8 KiB
C
360 lines
8.8 KiB
C
/* run front end support for all the simulators.
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011
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Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Steve Chamberlain sac@cygnus.com,
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and others at Cygnus. */
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#ifdef HAVE_CONFIG_H
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#include "cconfig.h"
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#include "tconfig.h"
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#endif
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#include <signal.h>
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#include <stdio.h>
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#ifdef __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#include "libiberty.h"
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#include "bfd.h"
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#include "gdb/callback.h"
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#include "gdb/remote-sim.h"
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#include "ansidecl.h"
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#include "run-sim.h"
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#include "version.h"
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static void usage PARAMS ((int help));
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static void print_version PARAMS ((void));
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extern int optind;
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extern char *optarg;
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extern host_callback default_callback;
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static char *myname;
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extern int getopt ();
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#ifdef NEED_UI_LOOP_HOOK
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/* Gdb foolery. This is only needed for gdb using a gui. */
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int (*deprecated_ui_loop_hook) PARAMS ((int signo));
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#endif
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static SIM_DESC sd;
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static RETSIGTYPE
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cntrl_c (int sig ATTRIBUTE_UNUSED)
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{
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if (! sim_stop (sd))
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{
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fprintf (stderr, "Quit!\n");
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exit (1);
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}
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}
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int
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main (ac, av)
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int ac;
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char **av;
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{
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RETSIGTYPE (*prev_sigint) ();
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bfd *abfd;
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int i;
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int verbose = 0;
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int trace = 0;
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#ifdef SIM_HAVE_ENVIRONMENT
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int operating_p = 0;
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#endif
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char *name;
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static char *no_args[4];
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char **sim_argv = &no_args[0];
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char **prog_args;
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enum sim_stop reason;
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int sigrc;
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myname = av[0] + strlen (av[0]);
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while (myname > av[0] && myname[-1] != '/')
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--myname;
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/* The first element of sim_open's argv is the program name. */
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no_args[0] = av[0];
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#ifdef SIM_HAVE_BIENDIAN
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no_args[1] = "-E";
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no_args[2] = "set-later";
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#endif
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/* FIXME: This is currently being migrated into sim_open.
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Simulators that use functions such as sim_size() still require
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this. */
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default_callback.init (&default_callback);
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sim_set_callbacks (&default_callback);
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#ifdef SIM_TARGET_SWITCHES
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ac = sim_target_parse_command_line (ac, av);
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#endif
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for (i = 1; av[i]; ++i)
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{
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if (strcmp (av[i], "--help") == 0)
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{
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usage (1);
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}
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else if (strcmp (av[i], "--version") == 0)
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{
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print_version ();
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return 0;
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}
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}
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/* FIXME: This is currently being rewritten to have each simulator
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do all argv processing. */
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while ((i = getopt (ac, av, "a:c:m:op:s:tv")) != EOF)
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switch (i)
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{
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case 'a':
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/* FIXME: Temporary hack. */
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{
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int len = strlen (av[0]) + strlen (optarg);
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char *argbuf = (char *) alloca (len + 2 + 50);
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sprintf (argbuf, "%s %s", av[0], optarg);
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#ifdef SIM_HAVE_BIENDIAN
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/* The desired endianness must be passed to sim_open.
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The value for "set-later" is set when we know what it is.
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-E support isn't yet part of the published interface. */
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strcat (argbuf, " -E set-later");
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#endif
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sim_argv = buildargv (argbuf);
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}
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break;
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#ifdef SIM_HAVE_SIMCACHE
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case 'c':
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sim_set_simcache_size (atoi (optarg));
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break;
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#endif
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case 'm':
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/* FIXME: Rename to sim_set_mem_size. */
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sim_size (atoi (optarg));
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break;
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#ifdef SIM_HAVE_ENVIRONMENT
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case 'o':
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/* Operating enironment where any signals are delivered to the
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target. */
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operating_p = 1;
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break;
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#endif
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#ifdef SIM_HAVE_PROFILE
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case 'p':
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sim_set_profile (atoi (optarg));
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break;
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case 's':
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sim_set_profile_size (atoi (optarg));
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break;
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#endif
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case 't':
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trace = 1;
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break;
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case 'v':
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/* Things that are printed with -v are the kinds of things that
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gcc -v prints. This is not meant to include detailed tracing
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or debugging information, just summaries. */
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verbose = 1;
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/* sim_set_verbose (1); */
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break;
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/* FIXME: Quick hack, to be replaced by more general facility. */
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default:
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usage (0);
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}
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ac -= optind;
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av += optind;
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if (ac <= 0)
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usage (0);
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name = *av;
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prog_args = av;
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if (verbose)
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{
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printf ("%s %s\n", myname, name);
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}
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abfd = bfd_openr (name, 0);
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if (!abfd)
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{
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fprintf (stderr, "%s: can't open %s: %s\n",
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myname, name, bfd_errmsg (bfd_get_error ()));
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exit (1);
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}
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if (!bfd_check_format (abfd, bfd_object))
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{
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fprintf (stderr, "%s: can't load %s: %s\n",
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myname, name, bfd_errmsg (bfd_get_error ()));
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exit (1);
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}
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#ifdef SIM_HAVE_BIENDIAN
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/* The endianness must be passed to sim_open because one may wish to
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examine/set registers before calling sim_load [which is the other
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place where one can determine endianness]. We previously passed the
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endianness via global `target_byte_order' but that's not a clean
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interface. */
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for (i = 1; sim_argv[i + 1] != NULL; ++i)
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continue;
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if (bfd_big_endian (abfd))
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sim_argv[i] = "big";
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else
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sim_argv[i] = "little";
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#endif
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/* Ensure that any run-time initialisation that needs to be
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performed by the simulator can occur. */
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sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, abfd, sim_argv);
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if (sd == 0)
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exit (1);
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if (sim_load (sd, name, abfd, 0) == SIM_RC_FAIL)
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exit (1);
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if (sim_create_inferior (sd, abfd, prog_args, NULL) == SIM_RC_FAIL)
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exit (1);
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#ifdef SIM_HAVE_ENVIRONMENT
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/* NOTE: An old simulator supporting the operating environment MUST
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provide sim_set_trace() and not sim_trace(). That way
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sim_stop_reason() can be used to determine any stop reason. */
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if (trace)
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sim_set_trace ();
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sigrc = 0;
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do
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{
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prev_sigint = signal (SIGINT, cntrl_c);
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sim_resume (sd, 0, sigrc);
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signal (SIGINT, prev_sigint);
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sim_stop_reason (sd, &reason, &sigrc);
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}
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while (operating_p && reason == sim_stopped && sigrc != SIGINT);
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#else
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if (trace)
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{
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int done = 0;
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prev_sigint = signal (SIGINT, cntrl_c);
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while (!done)
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{
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done = sim_trace (sd);
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}
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signal (SIGINT, prev_sigint);
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sim_stop_reason (sd, &reason, &sigrc);
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}
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else
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{
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prev_sigint = signal (SIGINT, cntrl_c);
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sigrc = 0;
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sim_resume (sd, 0, sigrc);
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signal (SIGINT, prev_sigint);
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sim_stop_reason (sd, &reason, &sigrc);
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}
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#endif
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if (verbose)
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sim_info (sd, 0);
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sim_close (sd, 0);
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/* If reason is sim_exited, then sigrc holds the exit code which we want
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to return. If reason is sim_stopped or sim_signalled, then sigrc holds
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the signal that the simulator received; we want to return that to
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indicate failure. */
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/* Why did we stop? */
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switch (reason)
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{
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case sim_signalled:
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case sim_stopped:
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if (sigrc != 0)
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fprintf (stderr, "program stopped with signal %d.\n", sigrc);
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break;
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case sim_exited:
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break;
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case sim_running:
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case sim_polling: /* These indicate a serious problem. */
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abort ();
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break;
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}
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return sigrc;
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}
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static void
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usage (int help)
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{
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FILE *stream = help ? stdout : stderr;
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fprintf (stream, "Usage: %s [options] program [program args]\n", myname);
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fprintf (stream, "Options:\n");
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fprintf (stream, "-a args Pass `args' to simulator.\n");
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#ifdef SIM_HAVE_SIMCACHE
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fprintf (stream, "-c size Set simulator cache size to `size'.\n");
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#endif
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fprintf (stream, "-m size Set memory size of simulator, in bytes.\n");
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#ifdef SIM_HAVE_ENVIRONMENT
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fprintf (stream, "-o Select operating (kernel) environment.\n");
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#endif
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#ifdef SIM_HAVE_PROFILE
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fprintf (stream, "-p freq Set profiling frequency.\n");
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fprintf (stream, "-s size Set profiling size.\n");
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#endif
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fprintf (stream, "-t Perform instruction tracing.\n");
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fprintf (stream, " Note: Very few simulators support tracing.\n");
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fprintf (stream, "-v Verbose output.\n");
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fprintf (stream, "\n");
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fprintf (stream, "program args Arguments to pass to simulated program.\n");
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fprintf (stream, " Note: Very few simulators support this.\n");
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#ifdef SIM_TARGET_SWITCHES
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fprintf (stream, "\nTarget specific options:\n");
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sim_target_display_usage (help);
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#endif
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if (help && REPORT_BUGS_TO[0])
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printf ("Report bugs to %s\n", REPORT_BUGS_TO);
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exit (help ? 0 : 1);
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}
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static void
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print_version ()
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{
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printf ("GNU simulator %s%s\n", PKGVERSION, version);
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}
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