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 PARAMS ((void));
+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 (argc, argv)
- int argc;
- char **argv;
+main (int argc, char **argv)
{
char *name;
char **prog_argv = NULL;
+ struct _bfd *prog_bfd;
enum sim_stop reason;
- int sigrc;
- SIM_DESC sd;
+ int sigrc = 0;
+ int single_step = 0;
+ RETSIGTYPE (*prev_sigint) ();
myname = argv[0] + strlen (argv[0]);
while (myname > argv[0] && myname[-1] != '/')
--myname;
- sim_set_callbacks (NULL, &default_callback);
- default_callback.init (&default_callback);
+ /* 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. */
- sd = sim_open (SIM_OPEN_STANDALONE, argv);
+ 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, NULL, 0) == SIM_RC_FAIL)
+ 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_argv, environ);
+ sim_create_inferior (sd, prog_bfd, prog_argv, environ);
#else
- sim_create_inferior (sd, prog_argv, NULL);
+ sim_create_inferior (sd, prog_bfd, prog_argv, NULL);
#endif
- /* Run the program. */
- sim_resume (sd, 0, 0);
-
+ /* 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);
-
- /* Find out why the program exited. */
- sim_stop_reason (sd, &reason, &sigrc);
-
+
/* 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 ();
case sim_exited:
break;
+
+ default:
+ fprintf (stderr, "program in undefined state (%d:%d)\n", reason, sigrc);
+ break;
+
}
#endif