Merge GDB 7.5.1

gdb/dwarf2-frame.c

 /* Frame unwinder for frames with DWARF Call Frame Information.
 
    Copyright (C) 2003-2005, 2007-2012 Free Software Foundation, Inc.
 
    Contributed by Mark Kettenis.
 
    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
@@ skipping 50 matching lines @@
      instructions.  */
   ULONGEST code_alignment_factor;
 
   /* Constants that is factored out of all offset instructions.  */
   LONGEST data_alignment_factor;
 
   /* Return address column.  */
   ULONGEST return_address_register;
 
   /* Instruction sequence to initialize a register set.  */
-  gdb_byte *initial_instructions;
-  gdb_byte *end;
+  const gdb_byte *initial_instructions;
+  const gdb_byte *end;
 
   /* Saved augmentation, in case it's needed later.  */
   char *augmentation;
 
   /* Encoding of addresses.  */
   gdb_byte encoding;
 
   /* Target address size in bytes.  */
   int addr_size;
 
@@ skipping 26 matching lines @@
   /* CIE for this FDE.  */
   struct dwarf2_cie *cie;
 
   /* First location associated with this FDE.  */
   CORE_ADDR initial_location;
 
   /* Number of bytes of program instructions described by this FDE.  */
   CORE_ADDR address_range;
 
   /* Instruction sequence.  */
-  gdb_byte *instructions;
-  gdb_byte *end;
+  const gdb_byte *instructions;
+  const gdb_byte *end;
 
   /* True if this FDE is read from a .eh_frame instead of a .debug_frame
      section.  */
   unsigned char eh_frame_p;
 };
 
 struct dwarf2_fde_table
 {
   int num_entries;
   struct dwarf2_fde **entries;
@@ skipping 213 matching lines @@
                        paddress (gdbarch, fs->pc));
 }
 
 /* Virtual method table for execute_stack_op below.  */
 
 static const struct dwarf_expr_context_funcs dwarf2_frame_ctx_funcs =
 {
   read_reg,
   read_mem,
   ctx_no_get_frame_base,