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diff --git a/sim/ppc/hw_register.c b/sim/ppc/hw_register.c
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+/*  This file is part of the program psim.
+    
+    Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
+    
+    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 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, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+    
+    */
+
+
+#ifndef _HW_REGISTER_C_
+#define _HW_REGISTER_C_
+
+#include "device_table.h"
+#include <stdlib.h>
+#include "psim.h"
+
+/* DEVICE
+
+
+   register - dummy device to initialize processor registers
+
+
+   DESCRIPTION
+
+   The properties of this device are used, during initialization, to
+   specify the initial value of various processor registers.  The
+   property name specifying the register to be initialized with the
+   special form <cpu-nr>.<register> being used to initialize a
+   specific processor's register (eg 0.pc).
+
+   Because, when the device tree is created, overriding properties are
+   entered into the tree before any default values, this device must
+   initialize registers in newest (default) to oldest (overriding)
+   property order.
+
+   The actual registers (for a given target) are defined in the file
+   registers.c.
+
+   This device is normally a child of the /openprom/init node.
+
+
+   EXAMPLES
+
+
+   Given a device tree containing the entry:
+
+   |	/openprom/init/register/pc 0xfff00cf0
+
+   then specifying the command line option:
+
+   |	-o '/openprom/init/register/pc 0x0'
+
+   would override the initial value of processor zero's program
+   counter.  The resultant device tree tree containing:
+
+   |	/openprom/init/register/0.pc 0x0
+   |	/openprom/init/register/pc 0xfff00cf0
+
+   and would be processed last to first resulting in the sequence: set
+   all program counters to 0xfff00cf0; set processor zero's program
+   counter to zero.
+
+   */
+
+static void
+do_register_init(device *me,
+		 const device_property *prop)
+{
+  psim *system = device_system(me);
+  if (prop != NULL) {
+    const char *name = prop->name;
+    unsigned32 value = device_find_integer_property(me, name);
+    int processor;
+
+    do_register_init(me, device_next_property(prop));
+
+    if (strchr(name, '.') == NULL) {
+      processor = -1;
+      DTRACE(register, ("%s=0x%lx\n", name, (unsigned long)value));
+    }
+    else {
+      char *end;
+      processor = strtoul(name, &end, 0);
+      ASSERT(end[0] == '.');
+      name = end+1;
+      DTRACE(register, ("%d.%s=0x%lx\n", processor, name,
+			(unsigned long)value));
+    }    
+    psim_write_register(system, processor, /* all processors */
+			&value,
+			name,
+			cooked_transfer);
+  }
+}
+		 
+
+static void
+register_init_data_callback(device *me)
+{
+  const device_property *prop = device_find_property(me, NULL);
+  do_register_init(me, prop);
+}
+
+
+static device_callbacks const register_callbacks = {
+  { NULL, register_init_data_callback, },
+  { NULL, }, /* address */
+  { NULL, }, /* IO */
+  { NULL, }, /* DMA */
+  { NULL, }, /* interrupt */
+  { NULL, }, /* unit */
+};
+
+const device_descriptor hw_register_device_descriptor[] = {
+  { "register", NULL, &register_callbacks },
+  { NULL },
+};
+
+#endif _HW_REGISTER_C_