Merge GDB 7.5.1

sim/rx/syscalls.c

 /* syscalls.c --- implement system calls for the RX simulator.
 
 Copyright (C) 2005, 2007-2012 Free Software Foundation, Inc.
 Contributed by Red Hat, Inc.
 
 This file is part of the GNU 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
@@ skipping 25 matching lines @@
 
 /* The current syscall callbacks we're using.  */
 static struct host_callback_struct *callbacks;
 
 void
 set_callbacks (struct host_callback_struct *cb)
 {
   callbacks = cb;
 }
 
+struct host_callback_struct *
+get_callbacks (void)
+{
+  return callbacks;
+}
+
 
 /* Arguments 1..4 are in R1..R4, remainder on stack.
 
    Return value in R1..R4 as needed.
      structs bigger than 16 bytes: pointer pushed on stack last
 
    We only support arguments that fit in general registers.
 
    The system call number is in R5.  We expect ssycalls to look like
    this in libgloss:
@@ skipping 242 matching lines @@
     case 255:
       {
         int addr = arg ();
         mem_put_si (addr, rx_cycles + mem_usage_cycles());
       }
       break;
 
     }
   return RX_MAKE_STEPPED ();
 }