sim: start a unified sim_do_command

Since sim_do_command for many people simply calls sim_args_command, start
a unified version of it.  For people who handle their own options, they
could switch to this by using sim_add_option_table instead.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

sim/common/sim-command.c

@@ -0,0 +1,33 @@
+/* Miscellaneous simulator utilities.
+
+   Copyright (C) 2005-2011 Free Software Foundation, Inc.
+   Contributed by Analog Devices, Inc.
+
+   This file is part of simulators.
+
+   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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+#include "sim-main.h"
+#include "sim-utils.h"
+
+/* Generic implementation of sim_do_command that works with simulators
+   which add custom options via sim_add_option_table().  */
+
+void
+sim_do_command (SIM_DESC sd, char *cmd)
+{
+  if (sim_args_command (sd, cmd) != SIM_RC_OK)
+    sim_io_eprintf (sd, "Unknown sim command: \"%s\".  Try \"sim help\".\n",
+		    cmd);
+}