Merge GDB 7.5.1

gdb/frame.h

 /* Definitions for dealing with stack frames, for GDB, the GNU debugger.
 
    Copyright (C) 1986, 1988-1994, 1996-2004, 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
@@ skipping 482 matching lines @@
 
 extern LONGEST frame_unwind_register_signed (struct frame_info *frame,
                                              int regnum);
 extern LONGEST get_frame_register_signed (struct frame_info *frame,
                                           int regnum);
 extern ULONGEST frame_unwind_register_unsigned (struct frame_info *frame,
                                                int regnum);
 extern ULONGEST get_frame_register_unsigned (struct frame_info *frame,
                                              int regnum);
 
+/* Read a register from this, or unwind a register from the next
+   frame.  Note that the read_frame methods are wrappers to
+   get_frame_register_value, that do not throw if the result is
+   optimized out or unavailable.  */
+
+extern int read_frame_register_unsigned (struct frame_info *frame,
+                                         int regnum, ULONGEST *val);
 
 /* Get the value of the register that belongs to this FRAME.  This
    function is a wrapper to the call sequence ``frame_register_unwind
    (get_next_frame (FRAME))''.  As per frame_register_unwind(), if
    VALUEP is NULL, the registers value is not fetched/computed.  */
 
 extern void frame_register (struct frame_info *frame, int regnum,
                             int *optimizedp, int *unavailablep,
                             enum lval_type *lvalp,
                             CORE_ADDR *addrp, int *realnump,
@@ skipping 258 matching lines @@
 
 extern struct frame_info *create_new_frame (CORE_ADDR base, CORE_ADDR pc);
 
 /* Return true if the frame unwinder for frame FI is UNWINDER; false
    otherwise.  */
 
 extern int frame_unwinder_is (struct frame_info *fi,
                               const struct frame_unwind *unwinder);
 
 #endif /* !defined (FRAME_H)  */