Merge GDB 7.5.1

gdb/gdbserver/linux-xtensa-low.c

 /* GNU/Linux/Xtensa specific low level interface, for the remote server for GDB.
    Copyright 2007-2012 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    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.
 
@@ skipping 162 matching lines @@
     (*the_target->read_memory) (where, (unsigned char *) &insn,
                                 xtensa_breakpoint_len);
     return memcmp((char *) &insn,
                   xtensa_breakpoint, xtensa_breakpoint_len) == 0;
 }
 
 struct linux_target_ops the_low_target = {
   init_registers_xtensa,
   0,
   0,
+  NULL,
   0,
   0,
+  NULL, /* fetch_register */
   xtensa_get_pc,
   xtensa_set_pc,
   xtensa_breakpoint,
   xtensa_breakpoint_len,
   NULL,
   0,
   xtensa_breakpoint_at,
 };