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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
commitc906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch)
treea0015aa5cedc19ccbab307251353a41722a3ae13 /sim/common/nrun.c
parentcd946cff9ede3f30935803403f06f6ed30cad136 (diff)
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Initial creation of sourceware repositorygdb-4_18-branchpoint
Diffstat (limited to 'sim/common/nrun.c')
-rw-r--r--sim/common/nrun.c214
1 files changed, 214 insertions, 0 deletions
diff --git a/sim/common/nrun.c b/sim/common/nrun.c
new file mode 100644
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--- /dev/null
+++ b/sim/common/nrun.c
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+/* New version of run front end support for simulators.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+
+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, 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 <signal.h>
+#include "sim-main.h"
+
+#include "bfd.h"
+
+#ifdef HAVE_ENVIRON
+extern char **environ;
+#endif
+
+static void usage (void);
+
+extern host_callback default_callback;
+
+static char *myname;
+
+static SIM_DESC sd;
+
+static RETSIGTYPE
+cntrl_c (int sig)
+{
+ if (! sim_stop (sd))
+ {
+ fprintf (stderr, "Quit!\n");
+ exit (1);
+ }
+}
+
+int
+main (int argc, char **argv)
+{
+ char *name;
+ char **prog_argv = NULL;
+ struct _bfd *prog_bfd;
+ enum sim_stop reason;
+ int sigrc = 0;
+ int single_step = 0;
+ RETSIGTYPE (*prev_sigint) ();
+
+ myname = argv[0] + strlen (argv[0]);
+ while (myname > argv[0] && myname[-1] != '/')
+ --myname;
+
+ /* INTERNAL: When MYNAME is `step', single step the simulator
+ instead of allowing it to run free. The sole purpose of this
+ HACK is to allow the sim_resume interface's step argument to be
+ tested without having to build/run gdb. */
+ if (strlen (myname) > 4 && strcmp (myname - 4, "step") == 0)
+ {
+ single_step = 1;
+ }
+
+ /* Create an instance of the simulator. */
+ default_callback.init (&default_callback);
+ sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, NULL, argv);
+ if (sd == 0)
+ exit (1);
+ if (STATE_MAGIC (sd) != SIM_MAGIC_NUMBER)
+ {
+ fprintf (stderr, "Internal error - bad magic number in simulator struct\n");
+ abort ();
+ }
+
+ /* Was there a program to run? */
+ prog_argv = STATE_PROG_ARGV (sd);
+ prog_bfd = STATE_PROG_BFD (sd);
+ if (prog_argv == NULL || *prog_argv == NULL)
+ usage ();
+
+ name = *prog_argv;
+
+ /* For simulators that don't open prog during sim_open() */
+ if (prog_bfd == NULL)
+ {
+ prog_bfd = bfd_openr (name, 0);
+ if (prog_bfd == NULL)
+ {
+ fprintf (stderr, "%s: can't open \"%s\": %s\n",
+ myname, name, bfd_errmsg (bfd_get_error ()));
+ exit (1);
+ }
+ if (!bfd_check_format (prog_bfd, bfd_object))
+ {
+ fprintf (stderr, "%s: \"%s\" is not an object file: %s\n",
+ myname, name, bfd_errmsg (bfd_get_error ()));
+ exit (1);
+ }
+ }
+
+ if (STATE_VERBOSE_P (sd))
+ printf ("%s %s\n", myname, name);
+
+ /* Load the program into the simulator. */
+ if (sim_load (sd, name, prog_bfd, 0) == SIM_RC_FAIL)
+ exit (1);
+
+ /* Prepare the program for execution. */
+#ifdef HAVE_ENVIRON
+ sim_create_inferior (sd, prog_bfd, prog_argv, environ);
+#else
+ sim_create_inferior (sd, prog_bfd, prog_argv, NULL);
+#endif
+
+ /* Run/Step the program. */
+ if (single_step)
+ {
+ do
+ {
+ prev_sigint = signal (SIGINT, cntrl_c);
+ sim_resume (sd, 1/*step*/, 0);
+ signal (SIGINT, prev_sigint);
+ sim_stop_reason (sd, &reason, &sigrc);
+
+ if ((reason == sim_stopped) &&
+ (sigrc == sim_signal_to_host (sd, SIM_SIGINT)))
+ break; /* exit on control-C */
+ }
+ /* remain on breakpoint or signals in oe mode*/
+ while (((reason == sim_signalled) &&
+ (sigrc == sim_signal_to_host (sd, SIM_SIGTRAP))) ||
+ ((reason == sim_stopped) &&
+ (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)));
+ }
+ else do
+ {
+#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
+ struct sigaction sa, osa;
+ sa.sa_handler = cntrl_c;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = 0;
+ sigaction (SIGINT, &sa, &osa);
+ prev_sigint = osa.sa_handler;
+#else
+ prev_sigint = signal (SIGINT, cntrl_c);
+#endif
+ sim_resume (sd, 0, sigrc);
+ signal (SIGINT, prev_sigint);
+ sim_stop_reason (sd, &reason, &sigrc);
+
+ if ((reason == sim_stopped) &&
+ (sigrc == sim_signal_to_host (sd, SIM_SIGINT)))
+ break; /* exit on control-C */
+
+ /* remain on signals in oe mode */
+ } while ((reason == sim_stopped) &&
+ (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT));
+
+ /* Print any stats the simulator collected. */
+ sim_info (sd, 0);
+
+ /* Shutdown the simulator. */
+ sim_close (sd, 0);
+
+ /* If reason is sim_exited, then sigrc holds the exit code which we want
+ to return. If reason is sim_stopped or sim_signalled, then sigrc holds
+ the signal that the simulator received; we want to return that to
+ indicate failure. */
+
+#ifdef SIM_H8300 /* FIXME: Ugh. grep for SLEEP in compile.c */
+ if (sigrc == SIGILL)
+ abort ();
+ sigrc = 0;
+#else
+ /* Why did we stop? */
+ switch (reason)
+ {
+ case sim_signalled:
+ case sim_stopped:
+ if (sigrc != 0)
+ fprintf (stderr, "program stopped with signal %d.\n", sigrc);
+ break;
+
+ case sim_exited:
+ break;
+
+ default:
+ fprintf (stderr, "program in undefined state (%d:%d)\n", reason, sigrc);
+ break;
+
+ }
+#endif
+
+ return sigrc;
+}
+
+static void
+usage ()
+{
+ fprintf (stderr, "Usage: %s [options] program [program args]\n", myname);
+ fprintf (stderr, "Run `%s --help' for full list of options.\n", myname);
+ exit (1);
+}
+
+
+#ifdef __CYGWIN32__
+/* no-op GUI update hook for standalone sim */
+void (*ui_loop_hook) PARAMS ((int)) = NULL;
+#endif