Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 214 insertions, 0 deletions

diff --git a/sim/common/nrun.c b/sim/common/nrun.c
new file mode 100644
index 0000000..42be33e
--- /dev/null
+++ b/sim/common/nrun.c
@@ -0,0 +1,214 @@
+/* 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