Merge GDB 7.5.1

opcodes/arc-dis.c

 /* Instruction printing code for the ARC.
-   Copyright 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2005, 2007, 2009, 2010
-   Free Software Foundation, Inc.
+   Copyright 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2005, 2007, 2009,
+   2010, 2012 Free Software Foundation, Inc.
    Contributed by Doug Evans (dje@cygnus.com).
 
    This file is part of libopcodes.
 
    This library 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, or (at your option)
    any later version.
 
    It 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., 51 Franklin Street - Fifth Floor, Boston,
    MA 02110-1301, USA.  */
 
-#include "ansidecl.h"
+#include "sysdep.h"
 #include "libiberty.h"
 #include "dis-asm.h"
 #include "opcode/arc.h"
 #include "elf-bfd.h"
 #include "elf/arc.h"
-#include <string.h>
 #include "opintl.h"
 
 #include <stdarg.h>
 #include "arc-dis.h"
 #include "arc-ext.h"
 
 #ifndef dbg
 #define dbg (0)
 #endif
 
@@ skipping 13 matching lines @@
   CLASS_A4_LD0,
   CLASS_A4_LD1,
   CLASS_A4_ST,
   CLASS_A4_SR,
   /* All single operand instructions.  */
   CLASS_A4_OP3_SUBOPC3F,
   CLASS_A4_LR
 } a4_decoding_class;
 
 #define BIT(word,n)     ((word) & (1 << n))
-#define BITS(word,s,e)  (((word) << (31 - e)) >> (s + (31 - e)))
+#define BITS(word,s,e)  (((word) >> s) & ((1 << (e + 1 - s)) - 1))
 #define OPCODE(word)    (BITS ((word), 27, 31))
 #define FIELDA(word)    (BITS ((word), 21, 26))
 #define FIELDB(word)    (BITS ((word), 15, 20))
 #define FIELDC(word)    (BITS ((word),  9, 14))
 
-/* FIELD D is signed in all of its uses, so we make sure argument is
-   treated as signed for bit shifting purposes:  */
-#define FIELDD(word)    (BITS (((signed int)word), 0, 8))
+/* FIELD D is signed.  */
+#define FIELDD(word)    ((BITS ((word), 0, 8) ^ 0x100) - 0x100)
 
 #define PUT_NEXT_WORD_IN(a)                                             \
   do                                                                    \
     {                                                                   \
       if (is_limm == 1 && !NEXT_WORD (1))                               \
         mwerror (state, _("Illegal limm reference in last instruction!\n")); \
       a = state->words[1];                                              \
     }                                                                   \
   while (0)
 
@@ skipping 1139 matching lines @@
 /* Return the print_insn function to use.
    Side effect: load (possibly empty) extension section  */
 
 disassembler_ftype
 arc_get_disassembler (void *ptr)
 {
   if (ptr)
     build_ARC_extmap ((struct bfd *) ptr);
   return decodeInstr;
 }